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Message IDTime stampMessage
202301300851332023/01/30 08:51:341) Name of the substation and Time: 220kv okhla @ 08.26 2) Name of element tripped/restored: 100 mva tr-4 3) Relay Annunciation: Diff optd ,86,RYB trip 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202301292336252023/01/29 23:36:251) Name of the substation and Time: 220kv peera garhi@23.14 2) Name of element tripped/restored: 100 mva tr-1 3) Relay Annunciation: diff optd ,trip ABC,86 AB,LV REF 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: LOAD Manged by other transformer 6) Any other relevant information: na Regards, Delhi SLDC
202301291737532023/01/29 17:37:541) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: At 17:10Hrs 100MVA 220/66KV T/F-2 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202301291707252023/01/29 17:07:261) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: At 16:35Hrs 100MVA 220/66KV T/F-2 and 66KV B/C tripped. Load affected was 25MW. Discom have shifted its load. 3) Relay Annunciation: Relay on 66KV B/C are O/C R-phase E/F. Relay on 66KV I/C-II is E/F. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202301291634112023/01/29 16:34:121) Name of the substation and Time: Maharani Bagh 2) Name of element tripped/restored: At 15:50Hrs 220KV Maharani Bagh-Trauma Centre ckt. I and II and 220KV Maharani Bagh-Masjid Moth ckt. I and II caught fire near barapula flyover. Fire Brigade dept. has also been informed. Load affected was approx. 320MW. Load of Trauma Centre grid normalised through Tughlakabad-Rk Puram ckt. while for Masjid Moth discoms have been asked to shift the load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202301241455182023/01/24 14:55:191) Name of the substation and Time: At 14:35HRS 220KV Lodhi road 2) Name of element tripped/restored: 33KV I/C No-3 3) Relay Annunciation: 86A,B 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 14:45HRS 33KV I/C No-3 Energized 6) Any other relevant information: Load effected approx 11MW Regards, Delhi SLDC
202301232147022023/01/23 21:47:021) Name of the substation and Time: 220kV Gopalpur@ 21:27Hrs 2) Name of element tripped/restored: 220kV Mandola - Gopalpur ckt 1 normal. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202301231959202023/01/23 19:59:201) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: At 19:33Hrs supply fail of 220KV Mandaula ckt-I. Load affected was 47MW. At 19:35Hrs Load normalised through 220KV SOW ckt-II. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202301201128432023/01/20 11:28:441) Name of the substation and Time: 220kV Kanjhawala, 10:30Hrs 2) Name of element tripped/restored: 66kV Incomer of 160MVA Transformer NO.3 3) Relay Annunciation: Master Trip, 50/51, IP Trip 4) Details of physically damaged equipment: R-Phase Isolator of 66kV Bus-II for Incomer NO.3 of 160MVA Transformer NO.-III. 5) Immediate corrective/system normalization steps performed: 66kV Feeders are shifted to 66kV BUS-I 6) Any other relevant information: At 11:05Hrs Load shifted to 66kV BUS-I, 60MW Load affected for 35 Minutes, Incomer of 160 MVA Transformer No-3 charged at 11:16 Hrs and connected to 66kV BUS-I. Regards, Delhi SLDC
202301191722302023/01/19 17:22:301) Name of the substation and Time: 220kv dev nagar@17.14 2) Name of element tripped/restored: 100 mva tr-4 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202301191721032023/01/19 17:21:041) Name of the substation and Time: 220kv dev nagar @17.08 2) Name of element tripped/restored: 100 mva tr-4 3) Relay Annunciation: nutral displacment relay 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202301191617552023/01/19 16:17:561) Name of the substation and Time: 220kv saritavihar@ 16.15 2) Name of element tripped/restored: 220kv pragati ckt charged 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202301191442322023/01/19 14:42:321) Name of the substation and Time: 220kv saritavihae@14.26 2) Name of element tripped/restored: 220kv pragari 3) Relay Annunciation: y,b ph trip,z1, fault location 3.412 km 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202301191130542023/01/19 11:30:551) Name of the substation and Time: 220 kv lodhiroad @11.23 2) Name of element tripped/restored: 100 mva tr-3 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: restored Regards, Delhi SLDC
202301182043482023/01/18 20:43:491) Name of the substation and Time: Lodhi Road 2) Name of element tripped/restored: At 19:10Hrs 100MVA T/F-3 tripped on 86. T/F was at no load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202301160933222023/01/16 09:33:231) Name of the substation and Time: At 220KV Okhla(09:15hrs) 2) Name of element tripped/restored: 66KV I/C-I and II. 3) Relay Annunciation: O/C, R-phase. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: BRPL informed to C/O load. 6) Any other relevant information: Monkey jump on 66KV common jumper -bus isolators of 20MVA-I transformer. Regards, Delhi SLDC
202301160931412023/01/16 09:31:421) Name of the substation and Time: At 220KV Okhkla(08:49hrs) 2) Name of element tripped/restored: 66KV I/C-I and II. 3) Relay Annunciation: O/C , R-phase. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: BRPL informed to C/O load. 6) Any other relevant information: Monkey jump on 66KV common jumper -bus isolators of 20MVA-I transformer. Regards, Delhi SLDC
202301141532002023/01/14 15:32:011) Name of the substation and Time: 220kV Mehrauli @ 14:54Hrs 2) Name of element tripped/restored: 220kV TGK-2 restored. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202301141134232023/01/14 11:34:241) Name of the substation and Time: 220kV Maehrauli @ 10:35Hrs 2) Name of element tripped/restored: 220kV Tughlakabad ckt 2 tripped. 3) Relay Annunciation: Line Diffrential Y and B Phase, Wrongly shown distance - 25.3kM, Fauly Current - 24.7kA. Relay at TGK end Zone-1 and 2, Y and B phase, Line Differential, Distance- 1.9km, Fault Current 24.3kA (Y phase) and 24.7kA(B-phase). 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Bus Coupler Put ON 6) Any other relevant information: 220kV Bus Coplers of Mehrauli and DIAL were in OFF position however 66kV B/C of DIAL was ON. This caused high loading of Txs at DIAL momentarily. Regards, Delhi SLDC
202301131629282023/01/13 16:29:291) Name of the substation and Time: 400/220kv Dwaraka @ 16:12 Hrs 2) Name of element tripped/restored: 220kV Bus-1 Section-1 restored @ 16:12 Hrs 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202301131437192023/01/13 14:37:201) Name of the substation and Time: 400/220kV Dwaraka 2) Name of element tripped/restored: 220kV Bus-1 Section-1 3) Relay Annunciation: Low Gas Pressure Density 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Feeder shifted to other Bus section 6) Any other relevant information: NIL Regards, Delhi SLDC
202301121905542023/01/12 19:05:551) Name of the substation and Time: At 19:00 HRS 220KV BTPS 2) Name of element tripped/restored: 220KV BLLBGH-Badarpur CKT-I Energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV BLLBGH-Badarpur CKT-I Energized Regards, Delhi SLDC
202301121815352023/01/12 18:15:361) Name of the substation and Time: At 16:55 HRS 220KV BTPS 2) Name of element tripped/restored: 220KV Balabhgasrh CKT-I tripped at BTPS end only .CVT is available at BTPS end 3) Relay Annunciation: L!-L3 Fault Location 24.7KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Noload effected 6) Any other relevant information: - Regards, Delhi SLDC
202301121210282023/01/12 12:10:281) Name of the substation and Time: 220KV Preet Vihar, 09:38Hrs. 2) Name of element tripped/restored: 220KV Harsh Vihar-II restored 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC
202301120811552023/01/12 08:11:561) Name of the substation and Time: At 220KVPreet Vihar(06:51hrs) 2) Name of element tripped/restored: 220KV Harsh Vihar ckt-II 3) Relay Annunciation: 86A, 86B, 50/51G. 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: Load already running on 220KV Harsh Vihar- Preet Vihar ckt-I. 6) Any other relevant information: ckt remains charged from Harsh Vihar end. Regards, Delhi SLDC
202301090424522023/01/09 04:24:531) Name of the substation and Time: 220kv sgtn @ 3.54 am 2) Name of element tripped/restored: 220kv smb ckt-1 tripped on over voltage 3) Relay Annunciation: over coltage r ph,86 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: 220kv b/c made on 6) Any other relevant information: na Regards, Delhi SLDC
202301082126242023/01/08 21:26:241) Name of the substation and Time: 220kV IP @20.57 2) Name of element tripped/restored: 100 MVA TR-1 CHARGED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202301080826032023/01/08 08:26:041) Name of the substation and Time: At 400kV Mundaka 2) Name of element tripped/restored: 400kV Bus-II Tripped @ 04:26Hrs. NO LOAD AFFECTED. 3) Relay Annunciation: LBB, VT Fail, TC-1 and 2, 395 Y phase (ICT-1) 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Load came on 400kV BUS-1. 6) Any other relevant information: ONE and HALF breaker scheme. Regards, Delhi SLDC
202301071713512023/01/07 17:13:521) Name of the substation and Time: At 15:22HRS 220KV IP 2) Name of element tripped/restored: Tripping of 1-100MVA-I with 33KV I/C-I 2-33KVI/C No-II 3) Relay Annunciation: 1-100MVA-I with 33KV I/C-I Both HV and LV O/C and E/F 2-33KVI/C No-II O/C and E/F 4) Details of physically damaged equipment: 1-33KV East Bus-II LA B and Y phase Damaged (02Nos LA) 2-B phase CB Pole damage of 33KV I/C-I 5) Immediate corrective/system normalization steps performed: At 15:55 HRS Load taken on 100MVA-III 16:20 HRS 33KV Bus-I Charged by 33KV I/C-II and system normalized 6) Any other relevant information: approx 70MW Load affected Regards, Delhi SLDC
202301070835532023/01/07 08:35:531) Name of the substation and Time: At 7:01 Hrs. CCGT BAWANA 2) Name of element tripped/restored: 400KV Bay#413 Bhadurgarh and Tie Bay#414(400KV Bhadurgarh-Bhiwani) 3) Relay Annunciation: Differential,R-Phase 4) Details of physically damaged equipment: R-Phase conductor snapped 5) Immediate corrective/system normalization steps performed: inform to NRLDC to put ON 400 KV Interconnector Bay#419 and 423 6) Any other relevant information: NA Regards, Delhi SLDC
202301051218022023/01/05 12:18:031) Name of the substation and Time: 220kv Kanjhawala 2) Name of element tripped/restored: 66kv I/c-1 and 3 tripped with Tripping of 66kV Karala-3 and RG-23 Ckt -1 @ 09:00 Hrs. 66kV I/c-3 restored@10.07 and I/c - 1 restored @ 10:30 Hrs. 66kV Karala-3 and RG-23 Ckt-1 is in Breakdown. 3) Relay Annunciation: O/C, E/F, 86 4) Details of physically damaged equipment: nil 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202301050944322023/01/05 09:44:331) Name of the substation and Time: 220kV RHN I, at 09:20 Hrs 2) Name of element tripped/restored: 66kV I/C-III and IV 3) Relay Annunciation: 66kV I/C-III- O/C, Prot. Opt, 86, O/C stage-I, O/C- Y pH 66kV I/C-IV- Any trip, O/C stage-I, O/C -Y and B Ph, 86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Normalized system at 09:26 Hrs 6) Any other relevant information: Approx. load effected 170 MW Regards, Delhi SLDC
202301042328472023/01/04 23:28:481) Name of the substation and Time: 220kV Sabzi mandi, at 22:50 Hrs. 2) Name of element tripped/restored: 100 MVA Tx.-I 3) Relay Annunciation: Differential A, B C trip, Deiff. High speed trip, 30A- Buchholz relay, REF HV,REF LV,186 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Tx. tripped on no load Regards, Delhi SLDC
202301041542502023/01/04 15:42:511) Name of the substation and Time: 220KV Sabji Mandi, 15:20Hrs. 2) Name of element tripped/restored: 100MVA-I restored 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: 100MVA-I charged at no-load which was tripped off at 16:20Hrs. on 21.12.2022 Regards, Delhi SLDC
202301041539232023/01/04 15:39:241) Name of the substation and Time: 220KV Sabji Mandi, 15:20Hrs. 2) Name of element tripped/restored: N/A 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: 100MVA-I charged at no-load which was tripped off at 16:20Hrs. on 21.12.2022 Regards, Delhi SLDC
202301030549542023/01/03 05:49:551) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 01:22Hrs 100MVA T/F-2 and 160MVA T/F-4 tripped on 195. Relay on 66KV I/C-2 and 66KV I/C-4 are O/C E/F Y-phase. 66KV C-Dot ckt-II also tripped on O/C E/F Y-phase(Blast observed in Y-phase CB pole). Load affected was approx. 35MW. Discoms were asked to shift their load. At 04:05Hrs 160MVA T/F-4 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202301022339452023/01/02 23:39:461) Name of the substation and Time: Maharani Bagh 2) Name of element tripped/restored: 220KV Maharani Bagh-Sarita Vihar ckt charged at 23:37Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202301022217482023/01/02 22:17:491) Name of the substation and Time: Maharani Bagh 2) Name of element tripped/restored: 220KV Maharani Bagh-Sarita Vihar ckt tripped at both end at 21:54Hrs. Relay at Maharani Bagh end are Z-2 R-phase 9.3km Ir=13.3KA. Relay at Sarita Vihar end are Z-1 R-phase 0.4km Ir=6.6KA. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202301020624342023/01/02 06:24:351) Name of the substation and Time: At 06:18 HRS 220KV SGTN 2) Name of element tripped/restored: 220KV SMB-I Circuit breaker closed/energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 06:18 HRS 220KV SMB-I Circuit breaker closed/energized System normal Regards, Delhi SLDC
202301020430042023/01/02 04:30:041) Name of the substation and Time: At 04:01 HRS 220KV SGTN 2) Name of element tripped/restored: 220KV SGTN-SMB ckt-I Only breaker trip 3) Relay Annunciation: 86A,B,86R2,Y2.B2,over voltage 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 04:09 HRS\ 220KV Buscoupler closed Load become normal 6) Any other relevant information: Approx 23MW Load efected Regards, Delhi SLDC
202301020143202023/01/02 01:43:211) Name of the substation and Time: At 01:16 HRS 220KV Maharani Bagh 2) Name of element tripped/restored: 220KV MBG-SVR CKT 3) Relay Annunciation: At SVR End -Y-phase trip Zone-I,Distance 8.86 KM Ia 165.3A,Ib 5.352 KA,Ic 92.18KA In 5.56KA,86 220KV MBG-end Y -ohase trip,Distance 8.3KM,L2E,IL1 0.0KA,IL2 15.19KA,IL3 0.0KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: No Load effected 6) Any other relevant information: - Regards, Delhi SLDC
202212301302002022/12/30 13:02:011) Name of the substation and Time: At12:54 HRS 220KV Gazipur 2) Name of element tripped/restored: Corrigendum message regarding 66KV Vivek vihar ckt-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Message recieved from grid Operation staff that fault found in Common Busbar jumper of 66KV Vivekvihar ckt-II.Earlier tripping message given by staff was not correct. Regards, Delhi SLDC
202212301135102022/12/30 11:35:101) Name of the substation and Time: At 10:25 HRS 220KV Gazipur 2) Name of element tripped/restored: Tripping of 66KV I/C-I,II and III 3) Relay Annunciation: 66KV I/C-I No indication 66KV I/C-II E/F,O/C,Y phase 86 66KV I/C-III E/F,O/C,R,Y,B phase , Gen Trip 86 4) Details of physically damaged equipment: 66KV Vivek vihar-II cable caught fire and feeder didnot trip 5) Immediate corrective/system normalization steps performed: At 10:35 HRS 66KV I/C-I,II and III enegized sytem became normal 6) Any other relevant information: Load affected approx 60MW Regards, Delhi SLDC
202212291244552022/12/29 12:44:561) Name of the substation and Time: Gazipur 2) Name of element tripped/restored: At 11:57Hrs 66KV I/C-2, 66KV I/C-3 and 66KV B/C tripped on O/C Y-phase with the tripping of 66KV Patparganj Industrial Area ckt which tripped on distance relay Y-phase 1km. Grid staff have reported blast in R and Y-phase CB Pole of 66KV Patparganj Ind. Area. Load affected was 65MW. At 12:13Hrs 66KV I/C-2 and 66KV I/C-3 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202212280917132022/12/28 09:17:141) Name of the substation and Time: At 07:39 HRS At 220KV TUGLAKABAD 2) Name of element tripped/restored: 160MVA-II with 66KV I/C -II tripped 3) Relay Annunciation: 160MVA-II PRV Trip,Gen Trip 66KV I/C-II 3 phase initiate fault,E/F stage-3 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: No Load effected Message conveyed at 09:03 HRS from TUGB Staff 6) Any other relevant information: - Regards, Delhi SLDC
202212280302052022/12/28 03:02:051) Name of the substation and Time: At 02:58 HRS 220KV Ridge valley 2) Name of element tripped/restored: 160MVA-Tx-No-II Energised 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 160MVA-Tx-No-II Energised Ridge valley S/Stn is Normalised Regards, Delhi SLDC
202212280249092022/12/28 02:49:101) Name of the substation and Time: At 02:43 HRS 220KV Ridge Valley 2) Name of element tripped/restored: 220KV R/V-NRN Circuit 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV Circuit Breaker of Naraina CKT closed at Ridge valley 160MVA-II is already tripped on OLTC Buchholz Regards, Delhi SLDC
202212280224352022/12/28 02:24:361) Name of the substation and Time: At 01:14 HRS 220KV Tuglakabad 2) Name of element tripped/restored: 220KV TUGB-RKP-CKT-I Tripped(TUGB-RKP-CKT-II was already off due to High voltage at 23:27 HRs Dated 27.12.2022) 220KV Ridge valley Supply failed 220KV Circuit Breaker of Naraian ckt tripped 86 A,B 160MVA TX-No-II tripped without indication 220KV naraina half Bus supply failed 3) Relay Annunciation: At Tuglakabad R phase to neatral Zone-I,Distance 0 KM,If -R phase 14.97KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 01:20 HRS 220KV Half Bus Of Naraina S/stn normalised through 220KV Bus coupler through 220KV Dwarka ckt I and II At 01:29 HRS 220KV RKP-TUGB CKT-II energised At 01:30HRS 220KV Ridgevalley substattion normalised throgh RKP-CKT-I 6) Any other relevant information: Approx Load effected 88MW Regards, Delhi SLDC
202212271249242022/12/27 12:49:251) Name of the substation and Time: 220KV Sabzi Mandi, 12:40Hrs. 2) Name of element tripped/restored: 100MVA-II along with 33KV I/C-II restored 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC
202212271240522022/12/27 12:40:521) Name of the substation and Time: 220KV Sabzimandi, 12:20Hrs. 2) Name of element tripped/restored: 100MVA-II along with 33KV I/C-II tripped 3) Relay Annunciation: HV CB open and LV CB open on 100MVA-II and no indication showing on 33KV I/C-II 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: Total load effected - 58MW, 100MVA-I along with 33KV I/C-I is already under shutdown. Regards, Delhi SLDC
202212261633022022/12/26 16:33:031) Name of the substation and Time: 220KV Sabzi Mandi, 16:20Hrs. 2) Name of element tripped/restored: 100MVA-II along with 33KV I/C-II 3) Relay Annunciation: HV CB open and LV CB open on 100MVA-II and no indication on 33KV I/C-II 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: Total load effected - 49MW, 100MVA-I along with 33KV I/C-I is already under shutdown. Regards, Delhi SLDC
202212260930202022/12/26 09:30:211) Name of the substation and Time: 220kv Mehrauli @ 09:22 Hrs 2) Name of element tripped/restored: Tx 1 and # Normal/ Restored. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202212260923062022/12/26 09:23:071) Name of the substation and Time: 220kV Mehrauli @ 09:05 Hrs 2) Name of element tripped/restored: 100MVA Tx 1 and 3 Tripped 3) Relay Annunciation: O/C, B-ph on 66kV I/c-1, Incomer-3 Tripped with Incomer-1, Both Tx were parallel. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Load shifted to nearby Grids and Txs are being done normal at Mehrauli. 6) Any other relevant information: Approx Load on both Tx was 180MW. Before Tripping DISCOM was requested to reduce the Load immediately. Regards, Delhi SLDC
202212251552302022/12/25 15:52:311) Name of the substation and Time: At220 KV Gopalpur (15:06hrs) 2) Name of element tripped/restored: 220 KV Mandola-I 3) Relay Annunciation: Tripped without Indication at Gopal pur end. Tripped on R and Y Phase, 9.8 KA at Mandola End. 4) Details of physically damaged equipment: NONE 5) Immediate corrective/system normalization steps performed: 220 KB B/C put On at Gopalpur. 6) Any other relevant information: NIL Regards, Delhi SLDC
202212240704562022/12/24 07:04:571) Name of the substation and Time: 220KV Patparganj, 07:00Hrs. 2) Name of element tripped/restored: 33KV I/C-II restored 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC
202212240702312022/12/24 07:02:321) Name of the substation and Time: 220KV Patparganj, 06:28Hrs. 2) Name of element tripped/restored: 33KV I/C-I restored 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC
202212240656402022/12/24 06:56:411) Name of the substation and Time: 220KV Patparganj, 06:01Hrs. 2) Name of element tripped/restored: 33KV I/C-I, 33KV I/C-II and 33KV Karkardooma-I 3) Relay Annunciation: Any Trip and E/F Stage-1 on 33KV I/C-I, Second Hormony Block on 33 I/C-II and Any Trip, Zone-2, RYB Phase Trip, E/F Stage-1 and O/C Stage-1 on 33KV Karkardooma-I 4) Details of physically damaged equipment: R-Phase CT of 33KV Karkardooma-I 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: Total load effected - 22MW Regards, Delhi SLDC
202212230452012022/12/23 04:52:021) Name of the substation and Time: 220kV Lodhi Road @ 4:12 Hrs 2) Name of element tripped/restored: CB of 220kv M. Bagh Ckt-1 Tripped. Line remained charged. 3) Relay Annunciation: Dist Prot. B- Phase, 4) Details of physically damaged equipment: nil 5) Immediate corrective/system normalization steps performed: 220kV Bus Coupler Put ON after Yard checked. 6) Any other relevant information: Line remained charged from M. Bagh End. Only CB Tripped at Loadhi Road. Regards, Delhi SLDC
202212230445032022/12/23 04:45:031) Name of the substation and Time: 220kv sarita vihar @ 4:12 Hrs 2) Name of element tripped/restored: 220kv Sarita Vihar- Pragati Tripped 3) Relay Annunciation: Z-1, Y phase, 2.872km, 8.471kA 4) Details of physically damaged equipment: nil 5) Immediate corrective/system normalization steps performed: clearance requested. 6) Any other relevant information: nil Regards, Delhi SLDC
202212221217592022/12/22 12:17:591) Name of the substation and Time: 400kV Bawana, at 09:54 Hrs 2) Name of element tripped/restored: 220kV Bus- Bar operated with 220kV I/C- I of 315 MVA tx. -I tripped, 220 kV RHN I Ckt-I and 220 KV SMB -I, 3) Relay Annunciation: 220kV Bus- Bar operated 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 09:58 Hrs, 220 kV B/C put on and normalized 6) Any other relevant information: -Approx. load effected -200 MW for 4 minuts only Regards, Delhi SLDC
202212211646192022/12/21 16:46:201) Name of the substation and Time: 220kv Sabji Mandi @ 16:20 Hrs 2) Name of element tripped/restored: 100MVA Tx 1 Tripped 3) Relay Annunciation: Diff ABC, HV REF, 95, 186 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Load Normal through 33kV Buscoupler @ 16:35 Hrs 6) Any other relevant information: 33MW Load affected Regards, Delhi SLDC
202212210557492022/12/21 05:57:491) Name of the substation and Time: 220kv svr@5.51 2) Name of element tripped/restored: 220kv pragati restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202212210540332022/12/21 05:40:331) Name of the substation and Time: 220kv mbagh @5.33 2) Name of element tripped/restored: 220kv saritavihar line restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202212210539342022/12/21 05:39:351) Name of the substation and Time: 220kv tuglakabad @5.26 2) Name of element tripped/restored: 220kv mehroli restroed 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202212210346282022/12/21 03:46:291) Name of the substation and Time: 400KV Bamnauli, 03:41Hrs. 2) Name of element tripped/restored: 400KV Tughlakabad-I 3) Relay Annunciation: Restored 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC
202212210342372022/12/21 03:42:381) Name of the substation and Time: 400KV Bawana, 03:19Hrs. 2) Name of element tripped/restored: 400KV Maharani Bagh-II 3) Relay Annunciation: Zone-1, Fault Location - 17.32m 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC
202212210259312022/12/21 02:59:321) Name of the substation and Time: 400KV Bamnauli, 02:38Hrs. 2) Name of element tripped/restored: 400KV Tughlakabad-I 3) Relay Annunciation: Zone-1, B-Phase, Fault Location - 5.413Km and Fault Current, B-Phase - 17.39KA 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC
202212210237422022/12/21 02:37:421) Name of the substation and Time: 220KV GEETA COLONY @02.34 2) Name of element tripped/restored: 33 KV I/C -1 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202212210228402022/12/21 02:28:411) Name of the substation and Time: 220KV GEETACOLNY @ 02.10 HR 2) Name of element tripped/restored: 33 KV I/C -1 ALONG WITH 33 KV KAILASH NAGAR CKT-1 3) Relay Annunciation: 30CB AUTO TRIP, 86,OC, 30 CB AUTO TRIP,OC START,Z1 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: 33 KV B/C CLOSED @ 02.11 AND LOAD NORMAL Regards, Delhi SLDC
202212210226122022/12/21 02:26:131) Name of the substation and Time: 220kv tuglakabad @ 02.06 hrs 2) Name of element tripped/restored: 220kv mehrouli-ckt-2 3) Relay Annunciation: z1,falut location 4km,r ph trip, fault current 22.08 kA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202212210200502022/12/21 02:00:511) Name of the substation and Time: 220 kv btps @01.29 hrs 2) Name of element tripped/restored: 220kv Tuglakbad ckt-1 3) Relay Annunciation: z1,y ph,falut location 0.76 km 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: ckt tripped both ends Regards, Delhi SLDC
202212210130312022/12/21 01:30:321) Name of the substation and Time: 220KV Maharani Bagh, 01:07Hrs. 2) Name of element tripped/restored: 220KV Sarita Vihar 3) Relay Annunciation: Fault Location - 7.2Km, Faulty Phase - R-Phase, Fault Phase, R-Phase - 15.44Km, Z-1, Z-2 and Z-3 opearted. 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC
202212210119022022/12/21 01:19:031) Name of the substation and Time: 220KV Sarita Vihar, 00:46Hrs. 2) Name of element tripped/restored: 220KV Pragati 3) Relay Annunciation: 86X, 186, Distance Protection Zone-1, Active Group-1, Fault Phase - Y-Phase, Fault Location - 7.901Km and Fault Current, Y-Phase - 11.05KA at Sarita Vihar end and 86A, 86B, 86C, 180A, 180B, Distance Protection Zone-1, 195CC, Fault Phase - Y-Phase, Fault Location - 5.091Km and Fault Current, Y-Phase - 7.215KA at Pragati end. 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N?A Regards, Delhi SLDC
202212201705332022/12/20 17:05:341) Name of the substation and Time: 400kv bml@16.58 2) Name of element tripped/restored: 220kv ppk-1 ckt-2 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202212200925122022/12/20 09:25:131) Name of the substation and Time: At 05:27 HRS 220KV Gopalpur 2) Name of element tripped/restored: 220KV mandola-I tripped at gopalpur end only 3) Relay Annunciation: Zone-I,b phase,R,Y,b ph,F/L 3.168KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 05:30HRS 220KV Buscoupler closed and sytem normalised 6) Any other relevant information: approx 48MW effected Regards, Delhi SLDC
202212200917122022/12/20 09:17:131) Name of the substation and Time: At 06:48 HRS 400KV Mundka 2) Name of element tripped/restored: 400KV Jhajjar-I tripped 3) Relay Annunciation: R-Phase,zone-I,Protection -I,86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 08:48 HrS 400KV jhajjar-I charged but didnot hold Regards, Delhi SLDC
202212200912322022/12/20 09:12:331) Name of the substation and Time: At 05:30HRS 400KV Bawana 2) Name of element tripped/restored: 400KV MBG-II tripped at Bawana end only 3) Relay Annunciation: R,Y,B Ph trip,zone-I,F/L 09.384KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: AT 06:30Hrs 400KV MBG-II charged system normal Regards, Delhi SLDC
202212200908442022/12/20 09:08:451) Name of the substation and Time: At 05:06 HRS 400KV MBG 2) Name of element tripped/restored: 220KV SVR CKT tripped 3) Relay Annunciation: Y ph,L2-E,Ia 0KA,Ib 18.81KA,Ic 0KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 05:34 Hrs Tried held Ok and tripped at 05:45 HRS 6) Any other relevant information: - Regards, Delhi SLDC
202212200905132022/12/20 09:05:131) Name of the substation and Time: At 04:08 HRS and 05:08 HRS 220KV TUGB 2) Name of element tripped/restored: 220MLI-II at 04:08 HRS and 220KV Okhla-I at 05:08 HRS tripped 3) Relay Annunciation: relay MLI-II Zone-I and II y,B Ph F/L 6.4KM If 18.585KA Relay 220KV Okhla ckt-I R ph,zone-I,F/L 0.5KM,Ir 29.043KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 05:28 HRS 220KV Vasant kunj ckt-II energised and load of Mehrauli grid normalised 6) Any other relevant information: - Regards, Delhi SLDC
202212200852372022/12/20 08:52:381) Name of the substation and Time: At 05:13 HRS 220KV PPG 2) Name of element tripped/restored: 33KV I/C-I,220KV Busbar,220KV Geeta colony I and II,IP -I and II Tripped 3) Relay Annunciation: Relay I/C-Relay y,B ph O/c Relay Busbar Zone-II 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 05:44 Hrs at 220KV Pragati 220KV Buscoupler closed,geeta colony i and II ,IP-I charged 6) Any other relevant information: Load effected approx 28MW Regards, Delhi SLDC
202212200834362022/12/20 08:34:371) Name of the substation and Time: At 05:10 HRS 220KV SVR 2) Name of element tripped/restored: 220KV Pragati ckt tripped 3) Relay Annunciation: Zone-I,Y-ph,Distance 5.06KM,Ia146.5A,Ib7.092KA,Ic1.145KA Relay Pragati zone-I,F/L 7.0948KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load affected Regards, Delhi SLDC
202212200813582022/12/20 08:13:591) Name of the substation and Time: At 08:08 hrs 220 KV I.P.S/stn 2) Name of element tripped/restored: 220 KV Patparganj ckt-II Charged at 08:08 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: -- 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202212200630492022/12/20 06:30:501) Name of the substation and Time: At 05:27 HRS 220KV Gopalpur 2) Name of element tripped/restored: 220KV Mandola -I tripped 3) Relay Annunciation: Zone-I,B phase trip,R,Y,B phase F/L 3.168mm,Ia1.115KA,Ib 1.374KA,Ic1.302KA,In 3.787KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 05:30 HRS 220KV Buscoupler closed LOad normalised 6) Any other relevant information: approx load affected 48 MW Regards, Delhi SLDC
202212200431112022/12/20 04:31:111) Name of the substation and Time: 220kV Gopal Pur, at 04:05 Hrs 2) Name of element tripped/restored: 220kV Mandola Ckt-I 3) Relay Annunciation: Y-Ph trip,Ia-1.5KA,Ib-1.45KA,Ic-1.31KA, In -4.217KA, Distance-09M, 4) Details of physically damaged equipment: _ 5) Immediate corrective/system normalization steps performed: 220kV Bus-coupler put on at 4:08 Hrs, 6) Any other relevant information: Approx. load effected- 44 MW, and system is normalized at 4:08 Hrs, Regards, Delhi SLDC
202212200356252022/12/20 03:56:261) Name of the substation and Time: At 03:19 HRS 400KV Bamnauli 2) Name of element tripped/restored: 220KV PPK-II ckt-I tripped 3) Relay Annunciation: Realay Bamnauli Y-phase zone -I,2.885KM,If 14.93KA Realy PPK-II D/P-II,Y-phase,MI operated,Distance inter trip,Bn zone-I,3.8KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load effected Regards, Delhi SLDC
202212200351512022/12/20 03:51:511) Name of the substation and Time: At 03;10 HRS 400KV Bamnauli 2) Name of element tripped/restored: 220 PPK-I ckt-I tripped at 03:10 HRS 220KV PPK-I ckt-II tripped at 03:13 HRS 3) Relay Annunciation: PPK-I Ckt-IY-PHASE ,ZONE-II,6.959km,If 12.97ka 220KV PPK-I ckt-II Trip B ph,zone-I,6.424 KM,If 12.7KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No loas affected Regards, Delhi SLDC
202212200346252022/12/20 03:46:261) Name of the substation and Time: At 02:32 HRS 400KV Munka 2) Name of element tripped/restored: 400KV Jhajjar-II tripped 3) Relay Annunciation: Relay Zone-I,D/P Y-phase both end tripping 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202212200341202022/12/20 03:41:201) Name of the substation and Time: At 03:22 HRS 400KV Dwarka 2) Name of element tripped/restored: 220KV Naraiana ckt-II tripped 3) Relay Annunciation: Relay Dwaeka Distance zone-I F/L 1.5KM,Fault stage -A,If 23052.482A Naraiana Autoreclosw R-Phase trip,D/P 5KM,86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load effected Regards, Delhi SLDC
202212200121412022/12/20 01:21:411) Name of the substation and Time: At 00.28 HRS 220KV Narela 2) Name of element tripped/restored: 220KV Panipat-I,Panipat-II and Panipat-III Tripped 3) Relay Annunciation: Relay Panipat -I A,B,C pHASE,.ZONE-II,F/D-496.7 msec,F/L-98.98KM Ia 50.98Amp,Ib 20.10A,Ic 54.46A,86 Relay Panipat -II A,B,C pHASE,F/D-528.4msec,F/L-66.64KM Ia 313.4Amp,Ib 338.8A,Ic 362.9A,86 Relay Panipat -III A,B,C SOTF,86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 00:53 HRS 220KV Buscoupler made ON and load taken of BBMB Rohtak road I and II and BBMB Tranformer taken from 220KV Mandola ckt-I and II 6) Any other relevant information: Load affected approx 63MW Regards, Delhi SLDC
202212191958152022/12/19 19:58:161) Name of the substation and Time: AT 18:12 HRS 400KV Mundka 2) Name of element tripped/restored: 40KV Jhajjar-II charged at 18:12 HRS 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202212191956392022/12/19 19:56:401) Name of the substation and Time: At 18:50 HRS 220 KV Kanjhawala 2) Name of element tripped/restored: 220KV Mundka ckt Charged at 18:50 HRS 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202212191703112022/12/19 17:03:121) Name of the substation and Time: 220KV NARELA @16.47 2) Name of element tripped/restored: 220KV DSIDC BAWANA CKT-2 RESTORED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202212191700432022/12/19 17:00:441) Name of the substation and Time: 400KV BAWANA @16.49 2) Name of element tripped/restored: 220KV SMB -CKT-1 RESTORED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202212191654192022/12/19 16:54:201) Name of the substation and Time: 400 kv BAWANA @ 15.30 2) Name of element tripped/restored: 315 ICT -5 RESTORED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202212191644512022/12/19 16:44:521) Name of the substation and Time: 220kv rohini @16:41 2) Name of element tripped/restored: 220kv smb -2 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202212191516332022/12/19 15:16:341) Name of the substation and Time: 400kb bml @15.14 2) Name of element tripped/restored: 220kv ppk-1 ckt-2 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202212191319362022/12/19 13:19:361) Name of the substation and Time: 220KV SMB @13.16 2) Name of element tripped/restored: 220KV SGTN CKT-1 RESTORED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202212191245032022/12/19 12:45:031) Name of the substation and Time: 220KV SOW @12.40 2) Name of element tripped/restored: 220KV MANDOLA CKT 2 RESTORED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202212191231502022/12/19 12:31:511) Name of the substation and Time: 220 kv DSIDC BAWANA @12.28 2) Name of element tripped/restored: 220KV BAWAN CKT-2 RESTORED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202212191217302022/12/19 12:17:311) Name of the substation and Time: 220kv gopal pur @12.12 2) Name of element tripped/restored: 220kv mandola ckt-1 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202212191150152022/12/19 11:50:161) Name of the substation and Time: 400kv bawana @11.40 2) Name of element tripped/restored: 220kv knj ckt 1 and 2 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202212191130142022/12/19 11:30:151) Name of the substation and Time: 220KV Mehrauli, 11:22Hrs. 2) Name of element tripped/restored: 220KV Tughlakabad-II restored 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC
202212191106532022/12/19 11:06:541) Name of the substation and Time: 220kV Shalimarbagh 11:03Hrs 2) Name of element tripped/restored: Wazirpur ckt-2 restored 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC
202212191104002022/12/19 11:04:011) Name of the substation and Time: 220kV SOW 10:29Hrs 2) Name of element tripped/restored: Kashmiri gate ckt 1 charged 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC
202212191100472022/12/19 11:00:481) Name of the substation and Time: 220kV Salimarbagh Rohini ckt-1 10:35Hrs 2) Name of element tripped/restored: 220kV Rihini ckt1 restored 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC
202212190746452022/12/19 07:46:461) Name of the substation and Time: At 4;44 Hrs. 400 KV Bamnauli 2) Name of element tripped/restored: 220KV PPK-1 Ckt-2 3) Relay Annunciation: R-Phase Z-1 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: CKT was on NO Load 6) Any other relevant information: na Regards, Delhi SLDC
202212190741042022/12/19 07:41:051) Name of the substation and Time: At 5:08 220KV Kanjhawala 2) Name of element tripped/restored: 220KV Mundka Ckt 1 n 2 3) Relay Annunciation: Z-1 Dist.Prot. Y-Phase 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: Load taken on 220KV Najafgarh 6) Any other relevant information: load normalized Regards, Delhi SLDC
202212190735132022/12/19 07:35:141) Name of the substation and Time: At 04:03 220KV Tuglakabad 2) Name of element tripped/restored: 220 KV Mehrauli Ckt-2 3) Relay Annunciation: R-Phase Dist.Prot 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: 220 kv B/C made on 6) Any other relevant information: na Regards, Delhi SLDC
202212190207192022/12/19 02:07:201) Name of the substation and Time: AT 220KV WAZIRABAD(01:07HRS) 2) Name of element tripped/restored: 220KV KASHMERE GATE-1 3) Relay Annunciation: Y PHASE, D/P , ZONE-1, 1.157KM 4) Details of physically damaged equipment: NONE. 5) Immediate corrective/system normalization steps performed: 220KV B/C PUT ON AT KASHMERE GATE. 6) Any other relevant information: NO TRIPPING FROM KASHMERE GATE. Regards, Delhi SLDC
202212190204242022/12/19 02:04:251) Name of the substation and Time: AT NARELA(00:55HRS) 2) Name of element tripped/restored: 220KV DSIIDC CKT-II 3) Relay Annunciation: C PHASE, D/P, ZONE-1 4) Details of physically damaged equipment: NONE. 5) Immediate corrective/system normalization steps performed: NO LOAD AFFECTED 6) Any other relevant information: LINE WAS CHARGED ON NO LOAD. Regards, Delhi SLDC
202212190201202022/12/19 02:01:211) Name of the substation and Time: AT 220kv GOPALPUR(00:52HRS) 2) Name of element tripped/restored: 220KV MANDOLA-1 3) Relay Annunciation: Y PHASE, ZONE-1 4) Details of physically damaged equipment: NONE. 5) Immediate corrective/system normalization steps performed: 220KV B/C PUT ON AT GOPALPUR, LOAD NORMALIZED. 6) Any other relevant information: NONE. Regards, Delhi SLDC
202212190057382022/12/19 00:57:381) Name of the substation and Time: AT ROHINI-1(00:53HRS) 2) Name of element tripped/restored: 220KV BAWANA-II 3) Relay Annunciation: R PHASE, D/P. 4) Details of physically damaged equipment: NONE. 5) Immediate corrective/system normalization steps performed: 220KV B/C PUT ON. 6) Any other relevant information: NONE. Regards, Delhi SLDC
202212190045592022/12/19 00:46:001) Name of the substation and Time: AT ROHINI-1(23:48HRS) 2) Name of element tripped/restored: 220KV BAWANA-II 3) Relay Annunciation: R PHASE, D/P, 8.609KM 4) Details of physically damaged equipment: NONE. 5) Immediate corrective/system normalization steps performed: 220KV B/C PUT ON AT ROHINI-1. 6) Any other relevant information: NONE. Regards, Delhi SLDC
202212190040472022/12/19 00:40:481) Name of the substation and Time: AT KASHMERE GATE(00:23HRS) 2) Name of element tripped/restored: 220KV WAZIRABAD-1 3) Relay Annunciation: B PHASE TRIP, ZONE-1 4) Details of physically damaged equipment: NONE 5) Immediate corrective/system normalization steps performed: 220KV B/C PUT ON. 6) Any other relevant information: NONE. Regards, Delhi SLDC
202212190033222022/12/19 00:33:241) Name of the substation and Time: AT KASHMERE GATE(00:23HRS) 2) Name of element tripped/restored: 220KV WAZIRABAD-1 3) Relay Annunciation: B PHASE TRIP, ZONE-1 4) Details of physically damaged equipment: NONE 5) Immediate corrective/system normalization steps performed: 220KV B/C PUT ON. 6) Any other relevant information: NONE. Regards, Delhi SLDC
202212190029422022/12/19 00:29:431) Name of the substation and Time: 220 KV Kashmirigate(23:52 HRS) 2) Name of element tripped/restored: 220 KV WAZIRABAD CKT-1 3) Relay Annunciation: B PHASE TRIP, ZONE-1 4) Details of physically damaged equipment: NONE 5) Immediate corrective/system normalization steps performed: 220KV B/C PUT ON AND LOAD NORMALIZED. 6) Any other relevant information: NONE. Regards, Delhi SLDC
202212150913202022/12/15 09:13:211) Name of the substation and Time: at 220kv Paretstreet and Pragati 2) Name of element tripped/restored: All System normal at Parkstreet and Pragati. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202212150835272022/12/15 08:35:281) Name of the substation and Time: 220kV Pragati and Parkstreet 2) Name of element tripped/restored: @07:52Hrs, Monkey fall on 33kV Incomer-2 at Parkstreet and this Incomer-2 tripped. Due to This 220kV Pragati- Parkstree -1 Tripped at Pragati end but not tripped at Parkstreet end. Also 220kv side of 100mVA Transformers not tripped of at Parkstreet end. @8:15Hrs, 220kV Bus-1 charged through 220kv Bus Coupler and 33kV Bus-1 normalised as relay of 220kv Pragati-Parkstreet stuck/not reset. 3) Relay Annunciation: At Pragati- O/C, R-phase, Any Trip, Line differential RYB phase. 4) Details of physically damaged equipment: 33KV I/C-II AT PARKSTREET. 5) Immediate corrective/system normalization steps performed: SUPPLY TAKEN THROUGH 220KV BUS COUPLER AT PKS. 6) Any other relevant information: NA Regards, Delhi SLDC
202212150706322022/12/15 07:06:331) Name of the substation and Time: 220kv Naraina 2) Name of element tripped/restored: @06:52 Hrs. 220kv Dwaraka-1 tripped on Distance Protection. No load affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202212081953232022/12/08 19:53:231) Name of the substation and Time: At 220kV GIS Dev Nagar, (19:08- 19:40) Hrs. 2) Name of element tripped/restored: 1) 220kV Bus-Bar I enrgized through 220kV Park Street( Bay-209) and 220kV Bus -bar-II energized through 220kV Bus-coupler(Bay--207) at 19:08 Hrs. 2)220kV/33kV, 100 MVA Tx-4(Bay- 210) energized at 19:21 Hrs 3)220kV/33kV, 100 MVA Tx-3(Bay-201) energized at 19:40 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202212080012412022/12/08 00:12:431) Name of the substation and Time: 220kv Parkstreet @00.01 hrs 2) Name of element tripped/restored: 220kv dev nagar 3) Relay Annunciation: auto reclose trip 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202212071856522022/12/07 18:56:531) Name of the substation and Time: 220kv DEV Nagar @18.46 2) Name of element tripped/restored: 220kv parkstreet cb closed and 220 kv bus1 and b/c and bus 2 charged 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202212070816222022/12/07 08:16:231) Name of the substation and Time: Park Street, .I.P, HCML 2) Name of element tripped/restored: Please provide uninterrupted power supply during the Parliament Session starts w.e.f. 07.12.2022 to 29.12.2022 on Park Street-Nirman Bhawan, Park Street-Baired Lane, I.P.Bay 2-Nirman Bhawan,I.P.Bay 4-Elect. Lane, HCML-Raisena Road, 3) Relay Annunciation: N.A. 4) Details of physically damaged equipment: N.A. 5) Immediate corrective/system normalization steps performed: N.A. 6) Any other relevant information: NDMC DISCOM AREA Regards, Delhi SLDC
202212070802202022/12/07 08:02:201) Name of the substation and Time: ALL BYPL AREA SUBSTATIONS 2) Name of element tripped/restored: Avoid any interruption in BYPL area for smooth counting at counting centers of MCD pole On 07/12/2022. Please ensure uninterrupted power supply. 3) Relay Annunciation: N.A. 4) Details of physically damaged equipment: N.A. 5) Immediate corrective/system normalization steps performed: N.A. 6) Any other relevant information: N.A. Regards, Delhi SLDC
202212062201052022/12/06 22:01:061) Name of the substation and Time: 220KV PARKSTREET 2) Name of element tripped/restored: NEWLY COMMISSIONED PARKSTREET- DEVNAGAR 220KV FEEDER CHARGED @20:58 HRS ON NO LOAD. 3) Relay Annunciation: N.A. 4) Details of physically damaged equipment: N.A. 5) Immediate corrective/system normalization steps performed: N.A. 6) Any other relevant information: N.A. Regards, Delhi SLDC
202212061442592022/12/06 14:42:591) Name of the substation and Time: 220kv Subzi mandi @14.02 2) Name of element tripped/restored: 220kv Gopalpur-2 CVT disaapered along with 33 kv BGroad ckt-1 and 2 3) Relay Annunciation: no indication 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 31 MW LOAD EFFECTED @ 14.20 33 KV BUSSECTION MADE ON SUUPLY RESTORED 6) Any other relevant information: AT 220KV GOPLAPUR -SUBZIMANDI CKT-2 TRIPED WITHOUT INDICATION Regards, Delhi SLDC
202212021321332022/12/02 13:21:341) Name of the substation and Time: 220KV SHALIMERBAGH @12.58 2) Name of element tripped/restored: 33 KV I/C -3 3) Relay Annunciation: no indication 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: bus coupler made on 13.10 hrs load restrored 6) Any other relevant information: load effected 40 mw Regards, Delhi SLDC
202212021319042022/12/02 13:19:051) Name of the substation and Time: 220kV DSIDC BAWANA @ 12.59 2) Name of element tripped/restored: 220KV BAWANA CKT-1 3) Relay Annunciation: Z2 OPTD ,RYB PH, 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: B/C MADE ON LOAD RESTORED @ 13.02 6) Any other relevant information: LOAD EFFECTED 87 MW Regards, Delhi SLDC
202211291147462022/11/29 11:47:471) Name of the substation and Time: aT 11:15 hRS,220Kv SMB 2) Name of element tripped/restored: 33kV I/C-III with 33kV Bus-II 3) Relay Annunciation: O/C- B Phase, 86 4) Details of physically damaged equipment: B-Ph, Bus PT blast, Y-Ph Bus PT damaged 5) Immediate corrective/system normalization steps performed: Load has been shifted to grid by TPDDL 6) Any other relevant information: Approx. load effected 28 MW Regards, Delhi SLDC
202211271135142022/11/27 11:35:151) Name of the substation and Time: Okhla 2) Name of element tripped/restored: At 11:09Hrs 160MVA T/F-1 tripped on differential YB-phase. Load affected was 27MW. At 11:15Hrs 66KV B/C closed and load normalised. At 11:30Hrs 160MVA T/F-1 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202211271020072022/11/27 10:20:081) Name of the substation and Time: 220KV Tughlakabad 2) Name of element tripped/restored: 220KV R. K. Puram-II 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: 220KV R. K. Puram-II put off at 22:14Hrs. on 26.11.2022 due to high voltage and tried to charge on today, 27.11.2022 till morning, but its CB could not be hold. Informed to AM(T) Maintenance, Tughlakabad Regards, Delhi SLDC
202211270851042022/11/27 08:51:051) Name of the substation and Time: 220kV Parkstreet, 8:20Hrs 2) Name of element tripped/restored: Discom Feeders normalized 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Discoms requested to normalize the load diverted at thier end due to DC problem at Parkstreet 6) Any other relevant information: Discom normalized the load, no load affected during this period. Regards, Delhi SLDC
202211270741412022/11/27 07:41:411) Name of the substation and Time: 220KV Park Street, 05:11Hrs. 2) Name of element tripped/restored: DC leakage restored 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Dioscm informed to normalize the load.No load affected, Didcom still normalizing the load diverted at their end. Regards, Delhi SLDC
202211270343092022/11/27 03:43:101) Name of the substation and Time: 220KV Park Street, 02:40Hrs. 2) Name of element tripped/restored: Load of 66KV and 33KV Feeders shifted/isolated due to DC problem 3) Relay Annunciation: DC fail, Trip Circuit faulty at 66KV and 33KV level 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: DISCOM load shifted 6) Any other relevant information: Informed to concerned AGM SO and DGM O and M Regards, Delhi SLDC
202211270004552022/11/27 00:04:561) Name of the substation and Time: 220KV Sabji Mandi Substation charged at 23:54Hrs. 2) Name of element tripped/restored: 220KV Gopal Pur-I and II, 100MVA-I and II, 33KV I/C-I and II, 16MVA-I and II along with 11KV I/C-I and II charged. 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: 220KV Substation Subji Mandi was completely swithched off on 26.11.2022 at 09:45Hrs along with 220KV, 33KV, 11KV and Power Transformers for overhauling of 220KV and 33KV GIS System but same was return due to shortage of material. Regards, Delhi SLDC
202211241231312022/11/24 12:31:321) Name of the substation and Time: 220kV Parkstreet at 10:55Hrs 2) Name of element tripped/restored: 220kV Parkrtreet- Pragati ckt 1, 100MVA Tr No 4 220/33kV Incomer along with 33kV Shankar road 2 tripped due to monkey at 33kV Shankar road 2 bus isolator. 3) Relay Annunciation: Any trip e/f stage 1 86 at 220kV pragati ckt1, 33kV Incomer No2 (100MVA Tr-4) any trip over current stage 1 overcurrent B-Ph and earth fault stage 1 (86). 4) Details of physically damaged equipment: 33kV Shankar road-2 Bus -II isolator flash. 5) Immediate corrective/system normalization steps performed: Load diverted and instructed S/stn staff to check and give clearance. 6) Any other relevant information: Load affected 50MW from 10:55Hrs to 11:25Hrs. Regards, Delhi SLDC
202211231901572022/11/23 19:01:581) Name of the substation and Time: Okhla 2) Name of element tripped/restored: At 17:56Hrs 33kV I/C-III and 33KV I/C-IV tripped on O/C R and Y phase with the tripping of 33KV Alaknanda ckt-I and ckt-II. Grid staff has reported electrocution of monkey. Load affected was 25MW. At 18:40Hrs 33KV I/C III and 33KV I/C-IV charged and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202211221950162022/11/22 19:50:171) Name of the substation and Time: 220kV Park Street, 18:43 Hrs 2) Name of element tripped/restored: 33kV I/C-II 3) Relay Annunciation: Any trip, O/C St1,O/C-R-Ph, 86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: load shifted by BSES and Normalized the system at 19:25 Hrs. 6) Any other relevant information: Approx. load effected 14 MW Regards, Delhi SLDC
202211191607072022/11/19 16:07:081) Name of the substation and Time: 400kv HARSH VIHAR 2) Name of element tripped/restored: 14:16 HRS 66KV BUSBAR RELAY OPERATED LOAD AFFECTED : 63MW At 14:39 Hrs Load Normalized 3) Relay Annunciation: n.a. 4) Details of physically damaged equipment: n.a. 5) Immediate corrective/system normalization steps performed: n.a. 6) Any other relevant information: n.a. Regards, Delhi SLDC
202211181414182022/11/18 14:14:201) Name of the substation and Time: Dial 2) Name of element tripped/restored: At 13:57Hrs 220KV Bamnauli-Dial ckt-II tripped at Bamnauli end on Z-2 AB-phase 11.9Km fault current 11.3KA. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202211180901112022/11/18 09:01:121) Name of the substation and Time: 220kV Narela, 08:50 Hrs 2) Name of element tripped/restored: 20 MVA Tx. I with 11 kV I/C-I 3) Relay Annunciation: Buchholz and 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 08:54Hes ,System is normalized bu using 11 kV Bus section 6) Any other relevant information: Approx. load effected 3 MW Regards, Delhi SLDC
202211171821102022/11/17 18:21:121) Name of the substation and Time: 220kV Meherauli, 14:41 Hrs 2) Name of element tripped/restored: 100 MVA Tx I,II and III 3) Relay Annunciation: At 100 MVA Tx I-86, At 100 MVA Tx II-86 and At 100 MVA Tx III-E/F and 86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: System is normalized at 14:50 Hrs 6) Any other relevant information: Approx. load effected -130 MW Regards, Delhi SLDC
202211131420432022/11/13 14:20:441) Name of the substation and Time: 220kV IP, 12:52 hrs 2) Name of element tripped/restored: 100 MVA-III with 33kV I/C-III and 33kV I/C-II due to monkey elecrocuted on 33kV Bus- bar 3) Relay Annunciation: On 100 MVA-III- REF, 86, On 33kV -I/C-III- O/C-R ph, On 33kV I/C-II- O/C B- Ph and O/C St-I 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 13:12 Hrs system is normalized by closing 33kV I/C-II 6) Any other relevant information: Approx. load effected 56 MW Regards, Delhi SLDC
202211120816262022/11/12 08:16:281) Name of the substation and Time: At 03:03 hrs: 220kV Rohini-II 2) Name of element tripped/restored: both 220KV ckts of BAWANA tripped at both ends 3) Relay Annunciation: At 400 KV Bawana end- E/F and 186 AB At 220KV Rohini-II: Details N/A 4) Details of physically damaged equipment: 160 MVA-I oil leakage and fire observed in control Cables and Battery bank 5) Immediate corrective/system normalization steps performed: 220kV B/C made ON and Load Shifted by Discoms 6) Any other relevant information: At same time 315MVA ICT-II tripped and restored at 7:02 hrs at 400kV Bawana Regards, Delhi SLDC
202211120744112022/11/12 07:44:121) Name of the substation and Time: At 03:03 Hrs. 400KV Bawana Sub.Stn. 2) Name of element tripped/restored: 315 MVA ICT#2 tripped 3) Relay Annunciation: O/C,R-Phase 4) Details of physically damaged equipment: At 220 KV Rohini-II Sub.Stn. fire observed in control cables and battery bank 5) Immediate corrective/system normalization steps performed: Load shifted by DISCOM 6) Any other relevant information: 315 MVA ICT#2 normalize at 07:02 hrs at 400 KV Bawana Regards, Delhi SLDC
202211061726312022/11/06 17:26:321) Name of the substation and Time: At 16:42 HRS 220KV BTPS 2) Name of element tripped/restored: 220KV OKHALA CKT-I 3) Relay Annunciation: At OKHLA,tripped,Zone-I BTPS Gen TRip ZOne-IR-Ph,Fault Distance 0.2KM 4) Details of physically damaged equipment: R-Phase 220KV LA damage 5) Immediate corrective/system normalization steps performed: No Load affected 6) Any other relevant information: - Regards, Delhi SLDC
202211051622322022/11/05 16:22:331) Name of the substation and Time: 220 M/ Moth , 16:15 2) Name of element tripped/restored: 100 MVA Tx. -II with 33 kv I/C-II 3) Relay Annunciation: PRV and master relay 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 16:16 Hrs , system is normalized 6) Any other relevant information: Approx. load effected 39 MW Regards, Delhi SLDC
202211041130402022/11/04 11:30:401) Name of the substation and Time: 220kV Lodhi Rd., 09:13 2) Name of element tripped/restored: 16 MVA Tx. -IV with 11kV I/c-IV due to Monkey electrocuted on HV side bushing, 100MVA Tx-II with 33kV I/C-II tripped due DC supply failed 3) Relay Annunciation: On 16 MVA-Master relay, On 100 MVA Tx-II-Master relay I and II . 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: At 10:10Hrs, system is normal and 16 MVA tx. under B/D already 6) Any other relevant information: Approx. 26 MW load effected Regards, Delhi SLDC
202211040918232022/11/04 09:18:231) Name of the substation and Time: At 220KV Sarita Vihar(23:54) 03.11.22 2) Name of element tripped/restored: 220KV Pragati ckt 3) Relay Annunciation: B phase trip(RYB) 5.15KA fault current .distance protection 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: no load affected. 6) Any other relevant information: both end tripping. Regards, Delhi SLDC
202211020840582022/11/02 08:40:591) Name of the substation and Time: 220kV Pragati, 08:18 2) Name of element tripped/restored: 220kV Pragati-Sarita Vihar 3) Relay Annunciation: At Pragati:- Trip Phase AN , Distance Zone-2, Fault located-11.70KM, Ia--8.09kA, Ib-120.1A, Ic-132.0A, In-8.338KA. At Sarita Vihar:- Zone-1,Dist. 2.712kM, Fault current IA-8.345Ka, Ib-116.2A,Ic-131.3A,In-8.102KA, R-Phase Trip 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202210311041542022/10/31 10:41:551) Name of the substation and Time: 220KV Dwarka, 09:57Hrs. 2) Name of element tripped/restored: 220KV Naraina-I 3) Relay Annunciation: Zone-1, R-Phase, Fault Location - 1.60Km, Fault Current, R-Phase - 22.078KA and In - 21.441KA. 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC
202210241515112022/10/24 15:15:121) Name of the substation and Time: 400 kv bawana @13.05 2) Name of element tripped/restored: 220kv i/c -5,220kv bus section,220 kv DSIDC BAWANA CKT-1 3) Relay Annunciation: LBB BB TRIP 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202210220748212022/10/22 07:48:221) Name of the substation and Time: 220kV Park street, at 06.32 Hrs 2) Name of element tripped/restored: 33kV I/C-II due to monkey Electrocuted 3) Relay Annunciation: E/F, FT-1,86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: at 06.50 Hrs, system is normalized 6) Any other relevant information: Load effected approx. 60 MA Regards, Delhi SLDC
202210220024072022/10/22 00:24:081) Name of the substation and Time: 220kV Park street, At 23:37 Hrs 2) Name of element tripped/restored: 100 MVA Tx-I with 33kV I/C-I and 33kV I/C-II (Monkey electrocuted) 3) Relay Annunciation: 30A-Bucholz trip,O/C,86 at 100 MVA Tx. with intertrip and St-1, O/C-R-Ph at 33kV I/C-II 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 23:55 Hrs 33kV -I/C-II and B/C put on and system is normalized 6) Any other relevant information: Approx.Load effected 58 MW Regards, Delhi SLDC
202210181347152022/10/18 13:47:161) Name of the substation and Time: Sabzi Mandi 2) Name of element tripped/restored: At 13:44Hrs 220KV Gopalpur-Sabzi Mandi ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202210181216162022/10/18 12:16:171) Name of the substation and Time: Sabzi Mandi 2) Name of element tripped/restored: At 11:53Hrs supply failed of 220KV Gopalpur ckt-II. Relay at Gopalpur end are YB-phase Z-1 3.1km Iy=Ib=7KA. Load affected was 50MW of Sabzi Mandi. Load normalised through 33KV B/C. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202210161353512022/10/16 13:53:521) Name of the substation and Time: 400 KV BML@ 10.30 2) Name of element tripped/restored: 220KV PPK-3- CKT-2 3) Relay Annunciation: Z1 OPTD 186 A B 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: CKT IS ON NO LOAD Regards, Delhi SLDC
202210161352052022/10/16 13:52:051) Name of the substation and Time: 220kv BTPS @1250 2) Name of element tripped/restored: 220KV TUGLAKABAD 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: 220kv BTPS-TUGLAKABAD ckt-1 restored Regards, Delhi SLDC
202210121250002022/10/12 12:50:011) Name of the substation and Time: At 11:48HRS 220 KV Patparganj 2) Name of element tripped/restored: 220 KV Geeta Colony Ckt-1 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: normal 6) Any other relevant information: - Regards, Delhi SLDC
202210112101332022/10/11 21:01:331) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: At 20:39Hrs 220KV Geeta Colony ckt-I tripped without indication. CVT coming at Patparganj end. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202210111816042022/10/11 18:16:051) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: At 17:25Hrs 220KV Geeta Colony ckt-I tripped on 86 and 220KV Geeta Colony ckt-II tripped on 86 RYB-phase distance relay. Load affected was approx. 200MW (IP,Rajghat and 66KV Park Street). At 17:30Hrs 220KV Geeta Colony ckt-II charged and load normalised and at 17:34Hrs 220KV Geeta Colony ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202210111516382022/10/11 15:16:391) Name of the substation and Time: 400 kV Bawana, 14:25 hrs 2) Name of element tripped/restored: 220kV Salimar Bagh Ckt-I 3) Relay Annunciation: At 400kV Bawana:- Distance protection with 86 relay 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: At 14:26 Hrs, System is normalized by CB closing at 220kV Bawana Ckt-1 6) Any other relevant information: Supply failed :-220kV Salimarbagh Ckt-1 and 2 at 220kV SGTN end and 220kV Salimarbagh Ckt-1 at220kV Wazirpur end. Load effected approx. 145 MW only one minut(14:25 to 14;26) Regards, Delhi SLDC
202210110918502022/10/11 09:18:521) Name of the substation and Time: At Mehrauli:(08:58hrs) 2) Name of element tripped/restored: 100MVA-II 3) Relay Annunciation: OLTC and OSR 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: load taken on other transformer. 6) Any other relevant information: no load taken. Regards, Delhi SLDC
202210110903002022/10/11 09:03:011) Name of the substation and Time: At Mehrauli: 05:40hrs 2) Name of element tripped/restored: 100MVA-I and 100MVA-II. 3) Relay Annunciation: transformer-I tripped on trip ckt faulty. and Transformer-II tripped on OLTC and OSR. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: load taken on other transformers. 6) Any other relevant information: No load affected. Regards, Delhi SLDC
202210110858052022/10/11 08:58:061) Name of the substation and Time: At Gazipur:03:54hrs 2) Name of element tripped/restored: 160MVA-I along with 66KV I/C-I 3) Relay Annunciation: overflux 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: load met by other transformer. 6) Any other relevant information: No load affected. Regards, Delhi SLDC
202210100920112022/10/10 09:20:121) Name of the substation and Time: 220KV Gazipur, 08:40Hrs. 2) Name of element tripped/restored: 100MVA-II along with 66KV I/C-II and 25MVA-I along with 11KV I/C-I 3) Relay Annunciation: Bucchholz Relay on 100MVA-II and Differential Y and B Phase, REF VL, HFI on 25MVA-I 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC
202210081522492022/10/08 15:22:501) Name of the substation and Time: 220KV Gazipur, 15:15Hrs. 2) Name of element tripped/restored: 160MVA-III along with 66KV I/C-III with 66KV Bus-Coupler 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: Restored 160MVA-III along with 66KV I/C-III with 66KV Bus-Coupler Regards, Delhi SLDC
202210081513492022/10/08 15:13:491) Name of the substation and Time: 220KV Gazipur, 13:54Hrs. 2) Name of element tripped/restored: 160MVA-III along with 66KV I/C-III with 66KV Bus-Coupler 3) Relay Annunciation: O/C and RYB Phase on 160MVA-III and O/C Stage 1, O/C Y-Phase, O/C B-Phase and 80AC1 on 66KV Bus-Coupler 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC
202210071555132022/10/07 15:55:131) Name of the substation and Time: 220KV South of Wazirabad, 14:13Hrs. 2) Name of element tripped/restored: 220KV Mandaula-I 3) Relay Annunciation: R-Phase Trip, Y-Phase Trip, Distance Trip, Zone-I, AR Lockout, 86, AB Trip, Fault Location - 3.791Km and Fault Current, R-Phase - 9.65KA and Y-Phase - 10.5KA 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC
202210071337122022/10/07 13:37:131) Name of the substation and Time: 220KV Okhla, 13:18Hrs. 2) Name of element tripped/restored: Restored all 220KV, 66KV, 33KV and 11KV Feeders (except 33KV Tughlakabad-I) 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC
202210071154592022/10/07 11:55:001) Name of the substation and Time: Corrigendum : 220kV Parkstreet 10:32Hrs to 10:46Hrs 2) Name of element tripped/restored: 220kV Pragati Ckt II 3) Relay Annunciation: DC Leakage 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Ckt charged at 10:46Hrs 6) Any other relevant information: Total 53 MW Load affected for 14Min, rest load shiftewd by discoms Regards, Delhi SLDC
202210071058472022/10/07 10:58:481) Name of the substation and Time: 220KV parkstreet, 10:32Min 2) Name of element tripped/restored: 220kV Pragati ckt II tripped, due to DC leakage 3) Relay Annunciation: 186A, 195CB, 295CA,80DC Supervision 1 and 2 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: clearance recieved from S/stn ckt charged at 10:46Hrs 6) Any other relevant information: Load shifted by Discom Regards, Delhi SLDC
202210071027112022/10/07 10:27:121) Name of the substation and Time: 220kV okhla 3:50Hrs 2) Name of element tripped/restored: 220KV BTPS ckt 1 and II, and 220kV TKD ckt II along with Complete 33kV and 66kV feeders are switched off due to DC leakage. 3) Relay Annunciation: DC leakage 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Concered Manager and DM(T) are informed to take corrective action 6) Any other relevant information: Nil Regards, Delhi SLDC
202210041447142022/10/04 14:47:141) Name of the substation and Time: 220kV Bawana, at 12:33hrs 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: system restored at 14:41 at 220kV KNJ Regards, Delhi SLDC
202210041358102022/10/04 13:58:101) Name of the substation and Time: 220kV Bawana, at 12:33hrs 2) Name of element tripped/restored: 220kV KNJ Ckt-II 3) Relay Annunciation: Distance protection operated , Zone-1,Dist.-10.42km, Ia-420A, Ib-970A,Ic-4.86kA, In-3.59KA, O/C 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 220kV KNJ is normalized through 220kV Mundka Ckt at 12:34 hrs 6) Any other relevant information: Load effected approx. 120MW for 1 minut only at KNJ end Regards, Delhi SLDC
202210031459152022/10/03 14:59:151) Name of the substation and Time: At 13:54 HRS 220KV Mehrauli 2) Name of element tripped/restored: 220KV TUGB-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV TUGB-II energized at 13:54 HRS System normal Regards, Delhi SLDC
202210031129202022/10/03 11:29:201) Name of the substation and Time: 220kV Meherauli , at 10:14 2) Name of element tripped/restored: 220kV TKD-MLI ckt-II, 3) Relay Annunciation: At TKD End:-A-Phase, fault current -20.64 KA, Zone-1, Distance -4.2kM At 220kV Mli end:- R-Ph, Line differential relay operated 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Laken taken on 220kV Vasant Kunj Ckt-2 6) Any other relevant information: NA Regards, Delhi SLDC
202210021707072022/10/02 17:07:081) Name of the substation and Time: 220KV OKHLA @ 16:32 2) Name of element tripped/restored: 160MVA TX -I TRIPPED DUE TO TRIPPING OF 66KV MALVIYA NAGAR-II. TRANSFORMER RESTORED @ 16:55 HRS. LOAD AFFECTED 49MW 3) Relay Annunciation: O/C, Y and B PHASE. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: FAULTY FEEDER NOT CHARGED. 6) Any other relevant information: TRANSFORMER TRIPPED WITH A OUTGOING FEEDER 66KV MALVIYA NAGAR -II Regards, Delhi SLDC
202210021635092022/10/02 16:35:101) Name of the substation and Time: 400KV BAMNAULI 2) Name of element tripped/restored: 400/220KV 500MVA ICT-III RESTORED @ 16:29 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202210021601412022/10/02 16:01:421) Name of the substation and Time: 220kv PPGJ 2) Name of element tripped/restored: 220KV GEETA COLONY-II TRIPPED @ 15:22HRS ON RELAY: R and Y PH. Z-1, 86, 883.7 MTR, RELAY AT G.COLONY END : 86ABC, 27A and B, 30E, ZONE-1, 3.510KM 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: CKT TRIPPED FROM BOTH END Regards, Delhi SLDC
202210021544422022/10/02 15:44:421) Name of the substation and Time: 220KV IP 2) Name of element tripped/restored: 220KV IP - PPGJ CKT 1 TRIPPED @ 186, R and Y PHASE, ZONE-1, DIST - 181.4 MTR. RELAY AT PPGJ - ZONE-1, R and Y PHASE, 550 MTRS, FAULT CURRENT - 12.58KA (R PH), 12.84KA (yPH) 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: DISCOME REQUETED TO REDUCE LOAD FROM IP AND RAJGHAT 6) Any other relevant information: CKT TRIPPED FROM BOTH END Regards, Delhi SLDC
202210021527492022/10/02 15:27:491) Name of the substation and Time: 220kv DIAL @ 15:13 2) Name of element tripped/restored: 220KV BAMNAULI - I RESTORED 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202210021419102022/10/02 14:19:101) Name of the substation and Time: 220kv sarita vihar 2) Name of element tripped/restored: 220kv pragati - sarita vihar restored@14:07 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202210021315582022/10/02 13:15:591) Name of the substation and Time: 220kV SARITA VIHAR @ 12:57 2) Name of element tripped/restored: 220KV PRAGATI CKT 3) Relay Annunciation: AT SARITA VIHAR END : B - PHASE ZONE-II, 15.02 KM, FAULT CURRENT - 3.558KA AT PRAGATI END : B - PHASE, ZONE-1, 1.459KM FAULT CURRENT - 17.52KA 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: N.A. 6) Any other relevant information: CKT TRIPPED AT BOTH END. Regards, Delhi SLDC
202210021257082022/10/02 12:57:091) Name of the substation and Time: 400KV BAMNAULI @ 12:09 2) Name of element tripped/restored: 400/220KV ICT-III 3) Relay Annunciation: 186A and B, 30B, PRV ,GRPA 86A1, GRP B 86B-1 4) Details of physically damaged equipment: N.A. 5) Immediate corrective/system normalization steps performed: LOAD CAME ON OTHER TRANFORMERS 6) Any other relevant information: TRANSFORMER TRIPPED WITH 220KV DIAL CKT -I Regards, Delhi SLDC
202210021251162022/10/02 12:51:171) Name of the substation and Time: 220kv DIAL @ 12:09 2) Name of element tripped/restored: 220KV BAMNAULI CKT -1 3) Relay Annunciation: TRIPPED ON R PH. TRIP, ZONE-II, GEN TRIP 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: LOAD TAKEN ON 220KV MEHRAULI 6) Any other relevant information: NO LOAD AFFECTED Regards, Delhi SLDC
202210012359292022/10/01 23:59:301) Name of the substation and Time: 220KV Sabji Mandi, 23:20Hrs. 2) Name of element tripped/restored: 100MVA-II 3) Relay Annunciation: 86, 186, Buchholz Relay operated 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: N/A Regards, Delhi SLDC
202210011439482022/10/01 14:39:481) Name of the substation and Time: Vasant Kunj 2) Name of element tripped/restored: At 13:13Hrs supply fail of 220KV Mehrauli ckt-II. Relay at Mehrauli end- E/F. Load affected was 40MW. Load normalised through 220KV RK Puram ckt at 13:15Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202210011303212022/10/01 13:03:221) Name of the substation and Time: Geeta Colony 2) Name of element tripped/restored: At 12:36Hrs 100MVA T/F-1 tripped on PRV Buchholz relay OTI WTI OSR SPR 86. Load affected was 39MW. Load normalised through 33KV B/C at 12:45Hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202209271709462022/09/27 17:09:471) Name of the substation and Time: At Sarita Vihar(14:29hrs) 2) Name of element tripped/restored: 220KV Maharani Bagh ckt. 3) Relay Annunciation: zone-I , Rphase ,4.89KA, 2.915KM. 4) Details of physically damaged equipment: Awaited. 5) Immediate corrective/system normalization steps performed: 220KV Bus coupler put ON at Sarita Vihar. 6) Any other relevant information: No load was affected. Regards, Delhi SLDC
202209271325082022/09/27 13:25:081) Name of the substation and Time: At Tughlakabad(12:30hrs) 2) Name of element tripped/restored: 220KV Mehrauli ckt-II 3) Relay Annunciation: R and Y phase, 16.6KM, 11.22KA, zone-I. 4) Details of physically damaged equipment: Information awaited. 5) Immediate corrective/system normalization steps performed: BSES asked to C/O load on available sources. 6) Any other relevant information: Supply of 220KV Vasant Kunj also affected.Since all the three transformers at Vasant Kunj has tripped and are not closing due to breaker trouble. Regards, Delhi SLDC
202209231716182022/09/23 17:16:181) Name of the substation and Time: At 220KV PPK-III(16:28hrs) 2) Name of element tripped/restored: 160MVA-II 3) Relay Annunciation: 67N, ST-1 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 66KV bus coupler put ON. 6) Any other relevant information: Load normalized. Regards, Delhi SLDC
202209221731502022/09/22 17:31:511) Name of the substation and Time: 220KV Okhla, 11:04Hrs. 2) Name of element tripped/restored: 33KV I/C-III and IV 3) Relay Annunciation: O/C, 86 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: Load shifted by DISCOM (BRPL) and total load effected is 3.5MW due to faulty cable of DISCOM (BRPL). Regards, Delhi SLDC
202209181603422022/09/18 16:03:431) Name of the substation and Time: 220kV Geeta clny, At 15:25 hrs. 2) Name of element tripped/restored: 33kV I/C-II along with 33kV Kailash Ngr-1 and 2 3) Relay Annunciation: At 33kV I/C-II O/C and 86, at 33kV O/G fdr Kailash Ngr- 1 and 2 with O/C high set and E/F high set. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Load has been transfered by BYPL 6) Any other relevant information: At 15:44 Hrs- 33kV bus energized through I/C-II with O/G fdrs.Approx. load effected 50 MW Regards, Delhi SLDC
202209180902002022/09/18 09:02:001) Name of the substation and Time: Sabzi Mandi 2) Name of element tripped/restored: 100MVA T/F-2 charged at 07:20Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202209180125202022/09/18 01:25:211) Name of the substation and Time: Sabzi Mandi 2) Name of element tripped/restored: At 23:35Hrs 100MVA T/F-2 tripped on 86. Load affected was 32MW. Load normalised through 33KV B/C at 23:45Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202209171411542022/09/17 14:11:551) Name of the substation and Time: 400kV Bamnauli, at 13:18 2) Name of element tripped/restored: 220kV Dail ckt-II 3) Relay Annunciation: At bamnauli:- Zone-II,86 A and B,Dis-9.85kM, Fault current Ic-12.25kA. At 220kV Dail:- Zone-II tripped, B-Phase trip, fault current 797.0kA 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: 13:35 Hrs:- Load taken on 220kV Meherauli Ckt-II and 66kV B/C put off 6) Any other relevant information: Load effected-Nill Regards, Delhi SLDC
202209170023522022/09/17 00:23:531) Name of the substation and Time: At 20:03 Hrs.400 KV Bawana 2) Name of element tripped/restored: 315MVA ICT#4 Energised 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: After completion of work NRLDC issued charging code 6) Any other relevant information: 315 MVA #4 was in breakdown wef 08 Sep (20:00 Hrs) Regards, Delhi SLDC
202209151647232022/09/15 16:47:241) Name of the substation and Time: Najafgarh 2) Name of element tripped/restored: Supply fail of 220KV Bamnauli ckt-II at 16:30Hrs Relay at Bamnauli end are B-phase Z-1 5.37km fault current 14KA. Load affected was 84MW. At 16:34Hrs load normalised through 220KV B/C at Najafgarh. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202209101635502022/09/10 16:35:501) Name of the substation and Time: At 15:47 HRS 220KV DSIIDC BAWANA 2) Name of element tripped/restored: 220KV Bawana-I 3) Relay Annunciation: AT DSIIDC Zone-I,Differential R-phase,Ia 921A,Ib408A,Ic 803A In2.096A At 400KV Zone -I,R,Y and B phase trip,Rn trip, Ia 25.19KA,Ib410A Ic 836A and In24.01A Distance 1.59KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At15:49 HRS 220KV Buscoupler closed system normalised 6) Any other relevant information: Approx 75MW load effected only for 2Minutes Regards, Delhi SLDC
202209090839172022/09/09 08:39:181) Name of the substation and Time: At Narela(00:05 hrs) 2) Name of element tripped/restored: 220KV Narela - DSIIDC ckt-II 3) Relay Annunciation: B and C phase, Zone-I, 9.002KA 4) Details of physically damaged equipment: Y phase conductor between Tower no. 224 and 225 snapped. 5) Immediate corrective/system normalization steps performed: 220KV B/C at DSIIDC put on and load normalized. 6) Any other relevant information: Supply of Narela failed at DSIIDC Bawana end. Regards, Delhi SLDC
202209081453132022/09/08 14:53:141) Name of the substation and Time: Bawana 2) Name of element tripped/restored: At 13:20Hrs 315MVA ICT-4 tripped on PRV, OTI WTI. Grid staff has reported fire in control cable which is under control now. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202209061424362022/09/06 14:24:371) Name of the substation and Time: 220KV NARELLA 13.58 2) Name of element tripped/restored: 220KV MANDOLA CKT-2 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202209061422252022/09/06 14:22:251) Name of the substation and Time: 220kv narella 12.09 2) Name of element tripped/restored: 220kv mandola ckt-1 and 2 3) Relay Annunciation: 220kv mandola ckt-1 Z1 ,RPH,7.3037 KM 220KV MANDOLA CKT-2 86 AB ,OC,R PH 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202209060026122022/09/06 00:26:121) Name of the substation and Time: At23:23 HRS 400KV MUNDKA 2) Name of element tripped/restored: 160MVA-II Energised 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 160 MVA-II Energised Regards, Delhi SLDC
202209052139042022/09/05 21:39:051) Name of the substation and Time: At 19:18 Hrs.400 KV Mundka 2) Name of element tripped/restored: 315 MVA ICT#3,220 KV Peeragarhi Ckt-1 and 160MVA-2 3) Relay Annunciation: Buchholz,Distance Protection and w/o indication 4) Details of physically damaged equipment: R-Y-B Phase bushing of 400KV side and R-Y Phase bushing 220KV side of 315MVA ICT-3 5) Immediate corrective/system normalization steps performed: load of 220 kv wazirpur s/stn shifted to 220 kv Shalimar bagh 6) Any other relevant information: Affected load approx. 200 MW for 05 Min. Regards, Delhi SLDC
202209021735152022/09/02 17:35:161) Name of the substation and Time: At 17:19 HRS 220KV ParkStreet 2) Name of element tripped/restored: 100 MVA,220/33KV Tx No-4 ,TAL Make is energized in replacement of Faulty 100 MVA,220/33KV Tx No-4 of BHEL make which was went faulty on dated 30.05.2022 at 17:39 HRS 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Transformer is charged on no load Regards, Delhi SLDC
202209021423252022/09/02 14:23:251) Name of the substation and Time: 220kV Geeta colny, at 13:55 Hrs 2) Name of element tripped/restored: - 3) Relay Annunciation: Revised information :-Relay operated as per operation staff On 100 MVA-II- HV O/C and LV O/C. 4) Details of physically damaged equipment: 33kV I/C-II will be under break down as Circuit Breaker problem,It is required to replaced as per DM(T) G. clny 5) Immediate corrective/system normalization steps performed: 100 MVA Tx. -II has been energized on no load at 13:55 Hrs 6) Any other relevant information: NIL Regards, Delhi SLDC
202209021320342022/09/02 13:20:341) Name of the substation and Time: 220 kV Geeta colny, at 12:52 Hrs 2) Name of element tripped/restored: 100 MVA Tx. II along with 33 kV I/C-II tripped 3) Relay Annunciation: On 100MVA-II- 86, WTI, OTI, HV and LV. On 33kV I/C-II- 86 (Inter tripping) 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 33kV bus-coupler put on and system normalized at 12:55 hrs 6) Any other relevant information: Load effected approx. 45 MW for 03 minuts Regards, Delhi SLDC
202209020850472022/09/02 08:50:481) Name of the substation and Time: IP 2) Name of element tripped/restored: At 06:32Hrs 33KV I/C-II tripped on O/C Y and B-phase with the tripping of 33KV Bay 7(Exhibition-3) which tripped on O/C R-phase. Grid staff has reported electrocution of monkey. Load affected was 29MW. At 07:10Hrs 33KV I/C-II charged and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202209011854342022/09/01 18:54:351) Name of the substation and Time: Najafgarh 2) Name of element tripped/restored: At 18:30Hrs 66KV I/C I,II,III and IV tripped on E/F with the tripping of 66KV Nangloi which tripped on O/C YB-phase E/F. Load affected was 260MW. At 18:40Hrs 66KV I/C I,II,III and IV charged and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208301913592022/08/30 19:14:011) Name of the substation and Time: 220kv sariataviahr 18.11 2) Name of element tripped/restored: 220kv SVR-MBAGH LINE 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202208301751102022/08/30 17:51:111) Name of the substation and Time: 220KV Maharanibagh 17.21 2) Name of element tripped/restored: 220KV Maharanibagh -Saritavihar 3) Relay Annunciation: zone 3,R ph ,7.3 km ,If=13 ka 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: AT 22O KV SVR END RELAYS NOTICED :ZONE1 ,r PH,3.36 KM Regards, Delhi SLDC
202208301742262022/08/30 17:42:271) Name of the substation and Time: 220kv geeta colony 17.21 2) Name of element tripped/restored: 220KV Buscoupler 3) Relay Annunciation: 86, E/F 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 17.30 hrs load restored aprox 48 mw effected 6) Any other relevant information: bypl conformed no shedding at theire end Regards, Delhi SLDC
202208300029472022/08/30 00:29:471) Name of the substation and Time: 220kV Dwarka, at 18:36 Hrs 2) Name of element tripped/restored: 220kV Dwarka-Naraina Ckt-1 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Energized at 00:18 Hrs dated 30.08.2022 and load has been taken . Regards, Delhi SLDC
202208300024142022/08/30 00:24:151) Name of the substation and Time: 220 KV Dwarka, at 18:36 Hrs. 2) Name of element tripped/restored: 220kV Dwarka-Naraina Ckt-1 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Energized at 00:18 hrs dated 30.08.2022 Regards, Delhi SLDC
202208292148252022/08/29 21:48:261) Name of the substation and Time: 220kV Dwarka, at 18:36 Hrs 2) Name of element tripped/restored: 220kV Naraina-Dwarka ckt-I tripped both end 3) Relay Annunciation: At Naraina end-A/R lockout, 80 BC-1, Zone-1, 86 AB,86 X, 86 ABC. At Dwarka end-Differential protection operated, fault location-8.7 kM, fault phase Current-15.3 kA. 4) Details of physically damaged equipment: As per AM(T) Narain, OPGW wire has been broken , massage given at 21:00 Hrs 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load effected Regards, Delhi SLDC
202208291238382022/08/29 12:38:391) Name of the substation and Time: 440KV Substation, Bamnauli, 12:20 2) Name of element tripped/restored: 220KV PPK-I, Ckt-II 3) Relay Annunciation: 86T, 86A, 86B, 86C, Zone-I, R-Phase 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: CB is already under OFF Position at PPK-I end. Regards, Delhi SLDC
202208270008442022/08/27 00:08:451) Name of the substation and Time: 220kV Geeta Clny, at 22:05 Hrs 2) Name of element tripped/restored: 100 MVA Tx. I and II alongwith 33kV I/C-I and II 3) Relay Annunciation: On 100 MVA Tx I-E/F, 86, IInd harmonic relay LV., On 100MVA Tx. II-86, On 33kV I/C-I- O/C, E/F ,86, On 33kV I/C-II- O/C ,86 4) Details of physically damaged equipment: 33kV I/C-I- R-Phase CB pole damaged. 5) Immediate corrective/system normalization steps performed: Load has been transfered by BYPL 6) Any other relevant information: Approx. 98MW load effected, 100 MVA Tx-II alongwith 33kV-I/c-II and 33kV Bus-coupler are energized and system is normalized at 22:50Hrs (Execpt 100 MVA Tx-I alongwith 33kV-I/c-I) Regards, Delhi SLDC
202208261904072022/08/26 19:04:081) Name of the substation and Time: At 17:42 HRS 220KV Narela 2) Name of element tripped/restored: 20MVA-I with 11KV I/C No-I 3) Relay Annunciation: y-phase differential REf LV and HV,86 4) Details of physically damaged equipment: Y-Ph LA damaged informed by operation staf at 18:53Hrs 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202208261844172022/08/26 18:44:181) Name of the substation and Time: At 17:42 HRS 220KV Narela 2) Name of element tripped/restored: 20MVA-I with 11KV I/C No-I 3) Relay Annunciation: y-phase differential REf LV and HV,86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 17:56 HRS 11KV Bus section close and system became normal 6) Any other relevant information: Approx 5MW load affected Regards, Delhi SLDC
202208260643052022/08/26 06:43:061) Name of the substation and Time: 220KV Dial, 02:47 2) Name of element tripped/restored: 02:47 (26.08.2022) 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: 160MVA-I along with 66KV I/C-I restored Regards, Delhi SLDC
202208252316472022/08/25 23:16:481) Name of the substation and Time: 220kV dial 2) Name of element tripped/restored: 66 kv incomer-1 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: ON 66KV ONCOMMER B ph current not showing and hummimg noise coming out. Mnagaer (T) ,Dial informed to put off 66 kv incommer-1 Regards, Delhi SLDC
202208241603002022/08/24 16:03:011) Name of the substation and Time: At 15:56 HRS 220KV PPK-I 2) Name of element tripped/restored: 220KV DWARKA Ckt-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV DWARKA Ckt-II energized Regards, Delhi SLDC
202208241602592022/08/24 16:03:001) Name of the substation and Time: At 15:56 HRS 220KV PPK-I 2) Name of element tripped/restored: 220KV DWARKA Ckt-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV DWARKA Ckt-II energized Regards, Delhi SLDC
202208241552272022/08/24 15:52:281) Name of the substation and Time: At 220kV PPK-I, 15:30Hrs 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: System is normalized with load taken on 220kV Bamnouli Ckt-II ( excepted 100 MVA Tx.-I) 6) Any other relevant information: - Regards, Delhi SLDC
202208241548202022/08/24 15:48:211) Name of the substation and Time: At 220kV PPK-I, 14:47 Hrs. 2) Name of element tripped/restored: 1) 220kV Dwarka Ckt- II . 2) 100 MVA Tx. I 3 At drarka end,PPK-I Ckt-II tripped on diffential stage-1, faulty A-B Phase 3) Relay Annunciation: 1) 220kV Dwarka Ckt- II tripped without indcation. 2) 100 MVA Tx. I tripped on buchholze alam, buchholze trip, 86 AB trip. 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: DMRC and instructed to load transfer to another grid imediatly 6) Any other relevant information: Approx. 76 MW load effected Regards, Delhi SLDC
202208241213192022/08/24 12:13:201) Name of the substation and Time: At 11:40 HRS 220KV Parkstreet 2) Name of element tripped/restored: 220/66 KV,100MVA Tx No-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220/66 KV,100MVA Tx No-II Energized at no LOAD Regards, Delhi SLDC
202208221928562022/08/22 19:28:561) Name of the substation and Time: 400KV Bawana, 18:43 2) Name of element tripped/restored: 400KV Maharani Bagh Ckt.-I 3) Relay Annunciation: R-Phase Trip, Y-Phase Trip, Zone-2 and 3, Fault Location - 40.45Km, Fault Current, R-Phase - 8.708KA and Y-Phase - 7.716KA. 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC
202208211552162022/08/21 15:52:171) Name of the substation and Time: 220kv PPG 15:45 2) Name of element tripped/restored: 220KV PPG-GC CKT-2 restored 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: NA Regards, Delhi SLDC
202208211549412022/08/21 15:49:421) Name of the substation and Time: 220kv ppg 14.57 2) Name of element tripped/restored: 220kb geeta colony -ppg ckt -2 3) Relay Annunciation: z1 R ph 4.028 kn cvt appearing at PPG end 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208190005522022/08/19 00:05:531) Name of the substation and Time: 220kV SOW, 22:15 Hrs. 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: staff visited yard, found kite thread and birdage on bus- bar and on 66kV I/C- IV CT clamp and Y-Ph Bus-I dropper juper snaped and Y-Ph disc damaged 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 23:22Hrs:- System is normal except 66kV I/C- IV with Bus-I Regards, Delhi SLDC
202208182346332022/08/18 23:46:341) Name of the substation and Time: 220kV SOW, at 22:15 Hrs 2) Name of element tripped/restored: 66kV I/C-IV tripped and staff visited yard, found kite thread and birdage on bus- bar and on 66kV I/C- IV CT clamp 3) Relay Annunciation: Y and B- Ph E/F, O/C 4) Details of physically damaged equipment: Y-Ph Bus-I dropper juper snaped and Y-Ph disc damaged 5) Immediate corrective/system normalization steps performed: System is normalized at 23:22 hrs. 6) Any other relevant information: Approx. 100 MW load effected Regards, Delhi SLDC
202208181845192022/08/18 18:45:271) Name of the substation and Time: At 18:40 HRS 220KV Mehrauli 2) Name of element tripped/restored: 220KV TUGB-MLI-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV TUGB-MLI-I restored Regards, Delhi SLDC
202208180038552022/08/18 00:38:551) Name of the substation and Time: 220 kv Saritavihar 00.21 hrs 2) Name of element tripped/restored: 220kv Saritavihar-Maharanaibagh ckt both end CB put off 3) Relay Annunciation: NA 4) Details of physically damaged equipment: Heavy sparking on tower at Gali no.11 jakeer Nagar ,Reopreted by loacal resident and same was conformed by AM(T),mtc Saritaviharr 5) Immediate corrective/system normalization steps performed: ckt both end CB put off 6) Any other relevant information: NA Regards, Delhi SLDC
202208171534072022/08/17 15:34:071) Name of the substation and Time: 220kV Mehrauli, at 13:35 Hrs. 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Normalized at 13:35Hrs Regards, Delhi SLDC
202208171435052022/08/17 14:35:061) Name of the substation and Time: 220kV Mehrauli, at 13:07 Hrs. 2) Name of element tripped/restored: 220kV Vasant Kunj Ckt-I tripped from Vsk end 3) Relay Annunciation: O/C, Y-Phase, master trip and auto trip 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: system is normalized by closing 220 kV Vasant Kunj Ckt-II 6) Any other relevant information: Approx. 63 MW load is effected. Regards, Delhi SLDC
202208170846502022/08/17 08:46:511) Name of the substation and Time: 220kv Geta Colony @ 00:05Hrs 2) Name of element tripped/restored: 100 MVA Tx. II charged on No Load @ 00:05 Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208170844252022/08/17 08:44:251) Name of the substation and Time: 220kv Geeta Colony 2) Name of element tripped/restored: 33kv Incomer -1 and 33kv Bus-1 charged @ 23:30 Hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208170842452022/08/17 08:42:461) Name of the substation and Time: 220kv Geeta Colony 2) Name of element tripped/restored: 33kv Incomer -1 and 33kv Bus-1 charged @ 23:30 Hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208162337482022/08/16 23:37:491) Name of the substation and Time: Geeta Colony 2) Name of element tripped/restored: At 23:30Hrs 33KV I/C-1 charged on 33KV Bus-I. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208162314222022/08/16 23:14:231) Name of the substation and Time: SOW 2) Name of element tripped/restored: 220KV Mandaula ckt-I charged at 23:11Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208162255592022/08/16 22:56:001) Name of the substation and Time: SOW 2) Name of element tripped/restored: At 18:44Hrs supply fail of 220KV Mandaula ckt-II and 220KV Mandaula ckt-III. 220KV Mandaula ckt-I tripped on Z-1 0.1km BC-phase Ib=13.3KA Ic=13.5KA. No load was affected At 19:48Hrs 220KV Mandaula ckt-II closed and at 19:50Hrs 220KV Mandaula ckt-III closed from Mandaula end. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208162239362022/08/16 22:39:371) Name of the substation and Time: Geeta Colony 2) Name of element tripped/restored: At 17:15Hrs 100MVA T/F-1 and 100MVA T/F-2 tripped. Y-phase Breaker pole of 33KV I/C-II damaged. On yard inspection by grid staff kite threads found on 220KV Bushing of R and B phase Bushings of 100MVA T/F-1. Relay on 100MVA T/F-1 are O/C B-phase HV LV REF. Relay on 100MVA T/F-2 are O/C differential. Load affected was 52MW. Discoms were asked to shift their load. At 19:03Hrs 100MVA T/F-1 charged at no load. At 20:06Hrs 33KV Bus-II back charged by 33KV Geeta colony ckt-I to feed 33KV Krishna Nagar ckt-I. Presently no load is affected and 100MVA T/-F-2, 33KV I/C-II ,33KV I/C-I and 33KV Bus-I is under breakdown and grid staff is attending the same. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208161745072022/08/16 17:45:081) Name of the substation and Time: 220kv South of Wazirabad 2) Name of element tripped/restored: 66kv Incomer- I, II, III and IV Restored @ 17:10 which were tripped @ 16:50 on Relays : O/C, E/F 3) Relay Annunciation: o/c, e/f 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208161712162022/08/16 17:12:171) Name of the substation and Time: 220kV SOW, at 16:00 Hrs. 2) Name of element tripped/restored: 220kV Bus-bar tripped alongwith 220kV Mandola Ckt-I and III, G.clony-I, kashmerigate-II, Gopalpur Ckt-I, 100 MVA Tx-I,II and III and 160 MVA Tx. CVT appeared from 220kV Mandola Ckt I and III 220kV Mandola Ckt- II and IV tripped from mandola Grid 3) Relay Annunciation: Bus-bar protection operated 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: System is normalized at 16:24 Hrs. except 220kV Mandola Ckt II and IV. 6) Any other relevant information: Approx. 227 MW load affected Regards, Delhi SLDC
202208161441332022/08/16 14:41:341) Name of the substation and Time: At 220kV Geeta Clny, 14:50 Hrs. 2) Name of element tripped/restored: 33kV B/C tripped 3) Relay Annunciation: 30CB auto tripped, 86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load has been taken on 33lV I/C-II 6) Any other relevant information: Approx. 50MW load affected only 5 Minuts, system is normalized at 14:55 Hrs. Regards, Delhi SLDC
202208151733392022/08/15 17:33:401) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: At 15:18Hrs 220KV Geeta colony ckt-I and II tripped on E/F, CVT of 220KV Geeta colony ckt-II available at Patparganj end. Load affected was approx. 130MW. Discoms were asked to shift their load. At 15:25Hrs 220KV Geeta Colony ckt-II tried but did not hold. At 15:32Hrs 220KV Gazipur ckt tried but tripped on R-phase differential. At 15:57Hrs 100MVA 220/33KV T/F-1 charged after shifting on 220KV Bus-II. At 16:03Hrs 100MVA 220/66KV T/F-1 charged after shifting on 220KV Bus-II. At 16:38Hrs 220KV Geeta colony ckt-II charged from Geeta Colony side. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208151620392022/08/15 16:20:391) Name of the substation and Time: Naraina 2) Name of element tripped/restored: 220KV Dwarka ckt-II tripped at 15:40Hrs on Line Differential BC-phase from both the ends. Load affected was 73MW. Load normalised through 220KV Ridge Valley ckt at 15:50Hrs. At 16:10Hrs 220KV Dwarka ckt-I and ckt-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208151530332022/08/15 15:30:331) Name of the substation and Time: Naraina 2) Name of element tripped/restored: 220KV Bus-I Bus Bar relay operated on Z-1 5.3km at 14:34Hrs. Load affected was 78MW. Load normalised through 220KV Dwarka ckt-II at 14:50Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208151524452022/08/15 15:24:451) Name of the substation and Time: SOW 2) Name of element tripped/restored: 220KV Mandaula ckt-III charged at 14:47Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208151519482022/08/15 15:19:481) Name of the substation and Time: SOW 2) Name of element tripped/restored: 220KV Mandaula ckt-III charged at 14:47Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208151517312022/08/15 15:17:321) Name of the substation and Time: Bawana 2) Name of element tripped/restored: 400KV Maharani Bagh ckt-I charged at 14:04Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208151247172022/08/15 12:47:181) Name of the substation and Time: Bawana 2) Name of element tripped/restored: 400KV Maharani Bagh ckt-I tripped on Z-1 RY-phase 29km at 12:33Hrs. Ir=11.4KA Iy=10.3KA. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208151216532022/08/15 12:16:541) Name of the substation and Time: SOW 2) Name of element tripped/restored: 220KV Mandaula ckt-III tripped on Z-1 RY-phase 2.21km Ir=10.8KA Iy=11.2KA at 11:27Hrs. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208141626022022/08/14 16:26:021) Name of the substation and Time: IP 2) Name of element tripped/restored: 33KV I/C-3 tripped on B-phase O/C E/F at 14:43Hrs. B-phase Bus-II isolator of 33KV I/C-3 got damaged. Load affected was 48MW. Discoms had shifted their load. At 15:32Hrs 33KV B/C closed. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208132200452022/08/13 22:00:461) Name of the substation and Time: 220kV Gopal Pur, at 21:52Hrs 2) Name of element tripped/restored: 220kV Mandola Ckt-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220kV Mandola Ckt-II charged and taken the load on Ckt at 21:52 Hrs and 220kV SOW Ckt-I put off.System is normalized. Regards, Delhi SLDC
202208131913122022/08/13 19:13:131) Name of the substation and Time: 220kV Gopalpur, at 18:48hrs 2) Name of element tripped/restored: 220kV Mandola Ckt-II tripped 3) Relay Annunciation: Differential trip relay operated, R and Y-Ph trip, 186 Master relay, fault current A-Ph-97A, B-Ph- 478A, C-Ph-492A, 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Load taken immediate through 220kV Wazirabad-Gopalpur Ckt-I at 18:50Hrs. 6) Any other relevant information: Approx. Load affected-138MW for 2 minuts only Regards, Delhi SLDC
202208120817302022/08/12 08:17:311) Name of the substation and Time: Okhla 2) Name of element tripped/restored: At 06:25Hrs 100MVA 220/33KV T/F-3 tripped on 86 TC faulty, 33KV I/C-4 tripped on RYB-phase O/C, 33KV I/C-5 tripped without indication along with this 33KV Tughlakabad ckt-I and II and 33KV East of Kailash also tripped. Load affected was 57MW. 33KV I/C-5 charged at 06:55Hrs and load normalised. 33KV I/C-4 charged at 06:58Hrs. 100MVA 220/33KV T/F-3 charged at 08:07Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208112050242022/08/11 20:50:251) Name of the substation and Time: Geeta Colony 2) Name of element tripped/restored: 100MVA T/F-1 and 100MVA T/F-2 tripped on O/C 86 at 18:48Hrs. B-phase bus isolator of 33KV Shakarpur got damaged. Load affected was 75MW. Discoms were asked to shift their load. 100MVA T/F-1 and 100MVA T/F-2 charged at 19:15Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208091907232022/08/09 19:07:241) Name of the substation and Time: 220KV IP 2) Name of element tripped/restored: 220KV IP-Patparganj-I 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: N/A 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: Circuit restored at 17:30Hrs. Regards, Delhi SLDC
202208091642352022/08/09 16:42:351) Name of the substation and Time: At 15:54 HRS 220KV Shalimar bagh 2) Name of element tripped/restored: 100MVA-III with 33KV I/C No-III and 20MVA with 11KV I/C 3) Relay Annunciation: 100MVA-96,86,O/C-Y phase 20MVA-Differential 87T,R,Y and b phase,86 4) Details of physically damaged equipment: 33KV YPhase CT Blast/burned/Damaged 5) Immediate corrective/system normalization steps performed: Load transfered by TPDDL 6) Any other relevant information: Load affected approx 53 MW Regards, Delhi SLDC
202208091415262022/08/09 14:15:271) Name of the substation and Time: At 10:50 HRS 220KV IP 2) Name of element tripped/restored: Due to Problem of CB operation at 220KV IP-Pataprganj ckt-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV IP-PPG ckt-I is not available in network. PTW issued at 11:20 HRS to maintenanace staff for 220KV CB rectification at 220KV IP substation Regards, Delhi SLDC
202208091258472022/08/09 12:58:481) Name of the substation and Time: At 11:21 HRS 220KV Substation Gopalpur 2) Name of element tripped/restored: 220KV Mandola CKT-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV Mandola-I charged and load taken Regards, Delhi SLDC
202208091255572022/08/09 12:55:581) Name of the substation and Time: At 09:56 HRS 220KV Gopalpur 2) Name of element tripped/restored: 220KV Mandola CKT-I tripped at Gopalpur end only 3) Relay Annunciation: R-Phase differential operated 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 09:56 HRs 220KV SOW-CKT-II ch.arged and systen became normal 6) Any other relevant information: Load affected approx 132 MW for 1 minute only Regards, Delhi SLDC
202208062347012022/08/06 23:47:021) Name of the substation and Time: At 19:25Hrs., 220KV kanjhawala 2) Name of element tripped/restored: 220KV Kanjhawala-Bawana Circuit - I and II, charged 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC
202208061412262022/08/06 14:12:271) Name of the substation and Time: Kanjhawala 13:18Hrs. 2) Name of element tripped/restored: 220KV Bawana ckt-I tripped on RB-phase Z-2 25.4km Supply fail of 220KV Bawana ckt-II. Relay at Bawana end on 220KV Kanjhawala ckt-I are R-phase Z-1 SOTF 8.3km fault current 4.8KA. Relay at Bawana end on 220KV Kanjhawala ckt-II are o/c 86 26.27km. Load affected was 120MW. Load normalised through 220KV Mundka ckt at 13:22Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208060754242022/08/06 07:54:251) Name of the substation and Time: 220 KV S.O.W. At-01:16 Hrs 2) Name of element tripped/restored: 100 MVA Tr-I with 66kV I/C-I tripped 3) Relay Annunciation: Magnitude current -138.3A,Ic-39.3Amp,REF HV,REF LV 71.62Amp.REF LV2-4.610Amp 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load NO Effected 6) Any other relevant information: Load has been taken to other transformer. Regards, Delhi SLDC
202208040733122022/08/04 07:33:131) Name of the substation and Time: Rajghat 2) Name of element tripped/restored: 100MVA T/F-1 tripped on differential RYB-phase LV REF at 04:50Hrs. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202208022158432022/08/02 21:58:441) Name of the substation and Time: At 21:40Hrs 220 Kanjhawla 2) Name of element tripped/restored: 100 MVA -I and II charged at 21:18 and 21:40 Hrs resp. 3) Relay Annunciation: -- 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202208022155262022/08/02 21:55:271) Name of the substation and Time: At 20:07 hrs. 220 KV Kanjhawala 2) Name of element tripped/restored: 100 MVA -I,II Tripped along with 66 KV I/C-I,II 3) Relay Annunciation: 100 MVA-I relay 86 Operated 100 MVA -II relay Any trip,O/C B ph. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 66 KV bus coupler close at 20:26Hrs 6) Any other relevant information: Load effected approx 56 MW Regards, Delhi SLDC
202208011926522022/08/01 19:26:531) Name of the substation and Time: 220kv masjid moth 18.55HR 2) Name of element tripped/restored: 100 mva tr-1 along with i/c 1,2 and 3 3) Relay Annunciation: non dir EF,DIFF B,C 87(1),87(2),87(3) ,86 4) Details of physically damaged equipment: NA MONKEY ELCTROCUTATED 5) Immediate corrective/system normalization steps performed: 19.10 MASJID MOTH S/STN POWER SUPPLY RESTORED 6) Any other relevant information: 19.10 MASJID MOTH S/STN POWER SUPPLY RESTORED Regards, Delhi SLDC
202208011920402022/08/01 19:20:401) Name of the substation and Time: 400 kv Teglakabad 18.10 2) Name of element tripped/restored: 220kv RK PURAM D/C NEW Tr cable charged 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: 18 30 HR LOAD TAKEN ON THIS FEEDER Regards, Delhi SLDC
202208011034052022/08/01 10:34:061) Name of the substation and Time: At 09:05Hrs, 220kV RPH 2) Name of element tripped/restored: 33kV I/C-II with Half bus-bar tripped due monkey electrocute 3) Relay Annunciation: Y and B-Ph O/C 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: 33kV B/c on and system normalized at 09:42 hrs 6) Any other relevant information: 33kV load affected approx. 80MW, 33kV I/C-II energized at 09:52 Hrs Regards, Delhi SLDC
202208011032302022/08/01 10:32:321) Name of the substation and Time: at 09:05 Hrs, 220KV RPH 2) Name of element tripped/restored: 33KV I/C no-II along with Half bus tripped due to money electrocute 3) Relay Annunciation: Y and B- Phase O/C Relay operated. 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: System Normailised at 09:42 Hrs by 33KV B/C CB closed and Load effected approx 80 MW. 6) Any other relevant information: 33KV I/C No-II Enersised at 09:52Hrs. Regards, Delhi SLDC
202208011032272022/08/01 10:32:301) Name of the substation and Time: at 09:05 Hrs, 220KV RPH 2) Name of element tripped/restored: 33KV I/C no-II along with Half bus tripped due to money electrocute 3) Relay Annunciation: Y and B- Phase O/C Relay operated. 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: System Normailised at 09:42 Hrs by 33KV B/C CB closed and Load effected approx 80 MW. 6) Any other relevant information: 33KV I/C No-II Enersised at 09:52Hrs. Regards, Delhi SLDC
202208011032262022/08/01 10:32:271) Name of the substation and Time: at 09:05 Hrs, 220KV RPH 2) Name of element tripped/restored: 33KV I/C no-II along with Half bus tripped due to money electrocute 3) Relay Annunciation: Y and B- Phase O/C Relay operated. 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: System Normailised at 09:42 Hrs by 33KV B/C CB closed and Load effected approx 80 MW. 6) Any other relevant information: 33KV I/C No-II Enersised at 09:52Hrs. Regards, Delhi SLDC
202208011032222022/08/01 10:32:261) Name of the substation and Time: at 09:05 Hrs, 220KV RPH 2) Name of element tripped/restored: 33KV I/C no-II along with Half bus tripped due to money electrocute 3) Relay Annunciation: Y and B- Phase O/C Relay operated. 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: System Normailised at 09:42 Hrs by 33KV B/C CB closed and Load effected approx 80 MW. 6) Any other relevant information: 33KV I/C No-II Enersised at 09:52Hrs. Regards, Delhi SLDC
202207312047522022/07/31 20:47:531) Name of the substation and Time: 220kv R.K. PURAM 2) Name of element tripped/restored: NEW 220KV FEEDERS 220KV RK PURAM - TUGHLAKABAD ENERGISED @ 20:38 (CKT-I) and 20:39 (CKT-II) 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202207311827002022/07/31 18:27:011) Name of the substation and Time: 220kv Patparganj 2) Name of element tripped/restored: 100 MVA Tx No. III, 220/33kV Restored @ 17:45 Hrs and load taken. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202207311643432022/07/31 16:43:441) Name of the substation and Time: At. 16:07 Hrs, 220kV PPG 2) Name of element tripped/restored: 220/33kV 100 MVA Tx. III 3) Relay Annunciation: RY and B-Ph Differential relay with Master relay operated 4) Details of physically damaged equipment: 33kV R-Ph LA Damaged as per Grid information 5) Immediate corrective/system normalization steps performed: By using B/C load normalized and load affected Approx. 25 MW 6) Any other relevant information: NA Regards, Delhi SLDC
202207301611012022/07/30 16:11:011) Name of the substation and Time: Lodhi Road 2) Name of element tripped/restored: 11KV I/C-I charged at 15:45Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202207301200432022/07/30 12:00:441) Name of the substation and Time: Lodhi Road 2) Name of element tripped/restored: 11KV I/C-I and II tripped on O/C RYB-phase with heavy sound and smoke at 10:24Hrs. Load affected was 7MW. Discoms have been asked to shift their load. Presently maintenance staff is attending the fault. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202207291122052022/07/29 11:22:061) Name of the substation and Time: Kashmiri Gate 2) Name of element tripped/restored: 220KV SOW ckt-II tripped at 09:43Hrs. Relay at SOW end are R and Y-phase Z-1 1.4km fault current 18KA. Relay at Kashmiri Gate end are R and Y-phase Differential trip. Load affected was 13MW. Load normalised at 09:44Hrs through 220KV B/C. 220KV SOW-Kashmiri Gate ckt-II charged at 11:12Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202201061221422022/01/06 12:21:43SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) 220KV testing 2) 220/33 testing 3) - 4) - 5) - 6) - Regards, Delhi SLDC
202207181846552022-07-18 18:46:561) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: 100MVA T/F-1 and 100MVA T/F-3 tripped without indication at 18:20Hrs. Load affected was 150MW (approx). Load normalised after charging 100MVA T/F-1 and 100MVA T/F-3 at 18:28Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202207172126422022-07-17 21:26:431) Name of the substation and Time: 20:06Hrs, 220kV SOW 2) Name of element tripped/restored: 100 MVA Tx. I,II and III with 66kV I/c-I, II and III 3) Relay Annunciation: _ 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 100 MVA Tx. I,II and III with 66kV I/c- II and III are energized and 66kV I/C- I is in trip position due to not operated the CB. Regards, Delhi SLDC
202207172108362022-07-17 21:08:371) Name of the substation and Time: At 19:30Hrs, 220kV SOW 2) Name of element tripped/restored: 100 MVA Tx. I, II and III alongwith 66 KV I/C- I, II and III 3) Relay Annunciation: 100 MVA Tx. I relay operated-O/C YB-Ph, SP-I trip, 66 KV I/C- I relay operated -Y,B -pH, 186 100 MVA Tx. II relay operated-O/C YB-Ph, SP-I trip 66 KV I/C- II relay operated -Y,B -pH, 186 100 MVA Tx. III relay operated-O/C YB-Ph, SP-I trip 66 KV I/C-III relay operated -Y,B -pH, 186 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Load has been shifted to other substation by BYPL 6) Any other relevant information: Load effected approx. 132 MW and 66 KV I/C-I is tripped position Regards, Delhi SLDC
202207172029422022-07-17 20:29:431) Name of the substation and Time: At 19:50Hrs ,220kV PPG 2) Name of element tripped/restored: 220kV IP ckt-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: At 19:50 Hrs Ckt energized Regards, Delhi SLDC
202207172026172022-07-17 20:26:191) Name of the substation and Time: At 220kV PPG, 19:20 Hrs 2) Name of element tripped/restored: 220kV IP Ckt-I 3) Relay Annunciation: 220kV PPG- Trip R,Y and B- Ph trip distance 1.406 KM , Zone-I trip, O/C 86 220kV IP end distance 1.44 kM Zone -1,186,86 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: At 19.50 Hrs 220kV ckt normilized 6) Any other relevant information: load Approx. 55 MW effected . Regards, Delhi SLDC
202207161334262022-07-16 13:34:281) Name of the substation and Time: At 11:30 Hrs 220 kV Shalimar bagh 2) Name of element tripped/restored: 220kV Bawana ckt-1 and 2, 220kV SGTN Ckt-1 and 2, 220 kV DMRC Ckt- 1 and 2, 100 MVA -1,2 and 3 3) Relay Annunciation: Bus bar protection operated due to kite thread fell on 220 kV bus-1 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: At 11:40 hrs 220kV Bawana ckt-1 and 2, 220kV SGTN Ckt-1 and 2, 220 kV DMRC Ckt- 1 and 2 charged, At 11:42 Hrs-100 MVA -1,2 charged, At 12:44 Hrs- 100 MVA -3 charged 6) Any other relevant information: Total load effected approx. 339 MW system is normalized Regards, Delhi SLDC
202207151513052022-07-15 15:13:061) Name of the substation and Time: At 14:18 Hrs, 220kV Meharauli 2) Name of element tripped/restored: 220kV TUGB Ckt-I tripped 3) Relay Annunciation: At TUGB end R,Y and B-Ph. tripeed , Zone-3 tripped , distance-14.008 KM, Ib =9.373 KA 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: At 14:41 hrs charged system normalized 6) Any other relevant information: Load effected 105 MW approx. Regards, Delhi SLDC
202207131905532022-07-13 19:05:551) Name of the substation and Time: 18:47 Hrs, 220kV Geeta Colony 2) Name of element tripped/restored: 220kV Geeta colony - SOW ckt1 charged 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC
202207131839082022-07-13 18:39:101) Name of the substation and Time: 18:15Hrs 220kV Geeta colony 2) Name of element tripped/restored: 220kV Geeta Colony- SOW-Ckt-1 3) Relay Annunciation: R-Y Phase, Distance Z-1, 240Mtr from SOW S/stn 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Informed to S/stn staff to check the ckt. 6) Any other relevant information: NIL Regards, Delhi SLDC
202207092226252022-07-09 22:26:261) Name of the substation and Time: Correction: 220kV Pappankala 2 ckt 1 and 2 charged for the first time on no load from 220kV Dwarka end at 21:31 and 21:33 Hrs respectively 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Load to be taken on 11/07/2022 after mapping of available raw SCADA data in SCADA HMI displays Regards, Delhi SLDC
202207092224062022-07-09 22:24:071) Name of the substation and Time: 220kV Pappankala 2 ckt 1 and 2 charged for the first time on no load from 220kV Dwarka end. 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Load to be taken on 11/07/2022 after mapping of available raw SCADA data in SCADA HMI displays Regards, Delhi SLDC
202207081812232022-07-08 18:12:231) Name of the substation and Time: 220 Kv Geeta Colony 2) Name of element tripped/restored: at 17:05 hrs Incomer-II charged.but at 17:20 hrs incomer-II again tripped on Over current.at 17:32 hrs incomer -II charged along with all 33 kv feeders. 3) Relay Annunciation: na 4) Details of physically damaged equipment: common jumper of bus-II of 33 KV Kanti nagar ckt-I 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: No load affected after 17:32 hrs.Incomer-I ,33 Kv bus-II still out attended by Mtc. staff. Regards, Delhi SLDC
202207081648322022-07-08 16:48:321) Name of the substation and Time: 220kV Geeta Colony at 16:25 hrs 2) Name of element tripped/restored: 33kV Kanti Nagar ckt 1, 33kV B/C, 33kV I/C I and II 3) Relay Annunciation: -- 4) Details of physically damaged equipment: R ph common jumper of 33kV Kanti Nagar ckt 1 broke and fell on nearby gantry 5) Immediate corrective/system normalization steps performed: BYPL instructed to divert all possible load 6) Any other relevant information: total load approx 128MW effected initially of which abouy 30 MW has been diverted by BYPL. Regards, Delhi SLDC
202207081404292022-07-08 14:04:311) Name of the substation and Time: At 400kV Bawana and 220kV Kanjhawla 11:54 Hrs 2) Name of element tripped/restored: Bawana 315 MVA ICT 3 tripped effecting all load of 220kV Kanjhawla. Also trippings on Kanjhawla 100MVA Tx 1 and 2 and 160MVA Tx. 3) Relay Annunciation: At Bawana: 86A1,B1, Dir. E/F,At Kanjhawla: 100MVA Tx 1 and 2 on 86 while 160MVA Tx on O/C RYB ph ANE trip 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Kanjhawala restored on 220kV Mundka-Kanjhawala ckt. and feeders normalized from 12:41 to 13:16 hrs 6) Any other relevant information: approx 150 MW load effected, normalized by TPDDL in approx 15 to 20 minutes. ICT 3 charged at 13:07 Hrs. and Kanjhawala-Bawana 1 and 2 charged and load taken on 13:57 hrs. Regards, Delhi SLDC
202207071532272022-07-07 15:32:281) Name of the substation and Time: At 220kV Naraina 12:58 Hrs 2) Name of element tripped/restored: 220kV B/C, 220kV Dwarka ckt 1, 100MVA Tx-2 and 100MVA Tx-3 3) Relay Annunciation: Bus bar Protection on Bus 1 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 220kV Ridge Valley ckt put on and 100MVA-1 Normalized (on Bus 2) at 13:10 hrs. 220kV Dwarka ckt 1, Bus 1, Tx 2 and 3 normalized at 13:29 6) Any other relevant information: approx 200MW load was effected which was restored at 13:29 Hrs. 220kV Dwarka-Naraina ckt 2 was put off for S/D at 12:36 hrs. After Tripping, S/D was cancelled. System normalized at 14:00Hrs. Regards, Delhi SLDC
202207061138242022-07-06 11:38:251) Name of the substation and Time: Pragati 2) Name of element tripped/restored: GT-2 tripped on internal fault at 10:31Hrs. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202207051329522022-07-05 13:29:531) Name of the substation and Time: Wazirpur 2) Name of element tripped/restored: 100MVA T/F-2 charged at 13:21Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202207051327112022-07-05 13:27:121) Name of the substation and Time: Naraina 2) Name of element tripped/restored: 100MVA T/F-3 charged at no load at 12:44Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202207051324332022-07-05 13:24:341) Name of the substation and Time: Naraina 2) Name of element tripped/restored: 100MVA T/F-3 charged at no load at 12:44Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202207051153202022-07-05 11:53:221) Name of the substation and Time: Wazirpur 2) Name of element tripped/restored: 100MVA T/F-2 tripped on oil surge relay at 10:58Hrs. Load affected was 57MW. Discoms have shifted its load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202207030008222022-07-03 00:08:231) Name of the substation and Time: Kanjhawala 2) Name of element tripped/restored: 100MVA T/F-2 charged at 21:31Hrs and 100MVA T/F-1 charged at 22:12Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202207022101472022-07-02 21:01:481) Name of the substation and Time: Kanjhawala 2) Name of element tripped/restored: 100MVA T/F-1 tripped on 86, 100MVA T/F-2 tripped on RYB-phase O/C E/F and 66KV DMRC tripped on RY-phase O/C at 20:05Hrs. Load affected was 54MW. Load normalised through 66KV B/C at 20:20Hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202207011058152022-07-01 10:58:161) Name of the substation and Time: At GTPS(09:48hrs) 2) Name of element tripped/restored: 66KV I/C-I and II of 160MVA transformers tripped. 3) Relay Annunciation: E/F and O/C. 4) Details of physically damaged equipment: NCT of HV and LV side of both 160MVA transformers found flashed. 5) Immediate corrective/system normalization steps performed: All the concerned utilities informed to C/O their load on other sources. 6) Any other relevant information: Monkey electocuted in 66KV yard of GTPS. However 25MW load of NDMC still remains affected. Regards, Delhi SLDC
202206302053572022-06-30 20:53:581) Name of the substation and Time: At 220 KV Naraina 2) Name of element tripped/restored: 100 MVA-II charged at 20:10hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202206301645552022-06-30 16:45:561) Name of the substation and Time: At 16:16 HRS 220KV NARAINA 2) Name of element tripped/restored: 100MVA-II with 33KV I/C-II 3) Relay Annunciation: SPR,86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 16:32 HRS 33KV Bus coupler closed 6) Any other relevant information: Load affected approx 74MW Regards, Delhi SLDC
202206301221262022-06-30 12:21:271) Name of the substation and Time: At 12:15 HRS 220KV M.MOTH 2) Name of element tripped/restored: 100MVA-II with 33KV I/C No-II tripped 3) Relay Annunciation: PRV operated ,86 I and II 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 33KV Buscoupler was alredy closed hence no load affected 6) Any other relevant information: - Regards, Delhi SLDC
202206281443502022-06-28 14:43:501) Name of the substation and Time: PPK-1 2) Name of element tripped/restored: 220KV Dwarka ckt-II made off by grid staff manually due to fire observed in Y-phase Bus-II isolator at 13:34Hrs. Load affected was 145MW. Load normalised through 220KV Bamnauli ckt-II at 13:45. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202206281333242022-06-28 13:33:251) Name of the substation and Time: Rajghat 2) Name of element tripped/restored: 33KV I/C-1 made off by grid staff manually due to fire observed in B-phase bus isolator of 33KV I/C-I at 13:02Hrs. Load affected was 42MW. Load normalised through 33KV B/C at 13:16Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202206281324202022-06-28 13:24:211) Name of the substation and Time: PPK-3 2) Name of element tripped/restored: 160MVA T/F-2 tripped on IV REF at 12:53Hrs. Load affected was 74MW. Load normalised through 66KV B/C at 13:03Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202206281319392022-06-28 13:19:401) Name of the substation and Time: Mehrauli and Vasant Kunj 2) Name of element tripped/restored: 220KV Tughlakabad-Mehrauli ckt-I tripped at 12:10Hrs. Relay at Tughlakabad end are RYB-phase Z-2. 220KV Vasant Kunj-Mehrauli ckt-I tripped on E/F and 220KV Vasant-Mehrauli ckt-II tripped without indication at 12:10Hrs. Load affected was approx. 140MW of Mehrauli and 138MW of Vasant Kunj. Load of Vasant Kunj normalised through 220KV R.K Puram ckt-I and II at 12:17Hrs. 220KV Tughlakabad-Mehrauli ckt-I charged at 12:34Hrs and load of Mehrauli normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202206281313162022-06-28 13:13:171) Name of the substation and Time: Mehrauli and Vasant Kunj 2) Name of element tripped/restored: 220KV Tughlakabad-Mehrauli ckt-I tripped at 12:10Hrs. Relay at Tughlakabad end are RYB-phase Z-2. 220KV Vasant Kunj-Mehrauli ckt-I tripped on E/F and 220KV Vasant-Mehrauli ckt-II tripped without indication at 12:10Hrs. Load affected was approx. 140MW of Mehrauli and 138MW of Vasant Kunj. Load of Vasant Kunj normalised through 220KV R.K Puram ckt-I and II at 12:17Hrs. 220KV Tughlakabad-Mehrauli ckt-I charged at 12:34Hrs and load of Mehrauli normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202206272220302022-06-27 22:20:311) Name of the substation and Time: DTL 20:22HRs 2) Name of element tripped/restored: Load Curtail to maintain grid balance 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: Even after repeated violation massages, discoms did not curtail overdrawl at low frequency of 49.59Hz in consultation with NRLDC and discoms following steps were taken to maintain grid balance. 400/220/66kV S/stn Mundka, At 20:25Hrs, 66kV Munka ckt-1 switched off 25MW load curtailed. 220KV Shalibarbagh, Ranibagh ckt switched off, At 20:32Hrs, 21 MW load curtailed, At 20:38Hrs Wazirpur-II cktII Switched off 13MW load curtailed, both ckt restored at 21:00Hrs 220kV Peeragarhi, At 20:22Hrs all 33kV feeders switched off, 187MW Load Curtailed, at 20:36Hrs Mukharji park ckt 1 and 2 and Pashchim puri ckt 1 and 2 switched on 42MW. 1 unit of CCGT bawana has been synchronized at 19:35 hrs. and massage conveyed to bring one unit of PPCL-I (150 mw) and 1 unit of GTPS on bar. Some load was also curtailed by Discoms at their end, quantum of load is yet not uploaded. Regards, Delhi SLDC
202206271118542022-06-27 11:18:551) Name of the substation and Time: Sarita Vihar 2) Name of element tripped/restored: 160MVA T/F-1 tripped without indication at 10:50Hrs. Load affected was 58MW. 160MVA T/F-1 charged at 10:53Hrs and load normalised. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202206250829422022-06-25 08:29:431) Name of the substation and Time: Rajghat 2) Name of element tripped/restored: 100MVA T/F-2 charged at 08:00Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202206250304422022-06-25 03:04:431) Name of the substation and Time: Rajghat 2) Name of element tripped/restored: 100MVA T/F-2 tripped on PRV at 00:40Hrs. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202206222049372022-06-22 20:49:381) Name of the substation and Time: 220 KV Ghazipur 2) Name of element tripped/restored: 220 KV MBGH ckt-II charged at 20:05 hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202206221925462022-06-22 19:25:471) Name of the substation and Time: 220 KV Gazipur at 19:00 hrs 2) Name of element tripped/restored: 220 KV MBGH ckt-II tripped from Both end on distance prot.z-IY phase 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: no load affected. Regards, Delhi SLDC
202206220928232022-06-22 09:28:271) Name of the substation and Time: IP 2) Name of element tripped/restored: 33KV I/C I and 33KV I/C-II tripped on E/F at 08:12Hrs. Load affected was 53MW. 33KV I/C-I charged at 08:23Hrs and load normalised. 33KV I/C-II charged at 08:40Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202206211816252022-06-21 18:16:281) Name of the substation and Time: Lodhi Road 2) Name of element tripped/restored: 220KV Maharani Bagh ckt-I charged at 17:45Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202206211639192022-06-21 16:39:201) Name of the substation and Time: AT-15:50 Hrs ,220 KV Masjid moth 2) Name of element tripped/restored: 220 KV Maharani Bagh ckt-1 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Restored at 15:50 Hrs) Regards, Delhi SLDC
202206211617522022-06-21 16:17:541) Name of the substation and Time: M bagh 1530 hrs 2) Name of element tripped/restored: lodhi road ckt1 3) Relay Annunciation: distance protection, 0.1 km, 33 kA fault in R phase 4) Details of physically damaged equipment: none reported 5) Immediate corrective/system normalization steps performed: load made normal by switching B coupler ON 6) Any other relevant information: 220 kV M Moth ckt1 also tripped at M Moth end at the same time. Total load affected about 95 MW for 5 mins Regards, Delhi SLDC
202206161400152022-06-16 14:00:171) Name of the substation and Time: At Sarita Vihar(12:53hrs) 2) Name of element tripped/restored: 220KV Pragati 3) Relay Annunciation: Tripped on B-N phase(RYB) ,1.8KA fault current. 4) Details of physically damaged equipment: none. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Pragati station. 6) Any other relevant information: A/R operated. Regards, Delhi SLDC
202206160853322022-06-16 08:53:331) Name of the substation and Time: At 220kV Gopalpur, at 08:04 Hrs 2) Name of element tripped/restored: 220kV Mandola ckt 2 energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202206160852072022-06-16 08:52:081) Name of the substation and Time: At 220kV IP, at 08:49 2) Name of element tripped/restored: 220kV Pragati ckt energized. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202206160255152022-06-16 02:55:161) Name of the substation and Time: At 220kV IP 02:30 Hrs 2) Name of element tripped/restored: 220kV Pragati ckt 2 3) Relay Annunciation: 86 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Line didnot trip at Pragati end Regards, Delhi SLDC
202206160244422022-06-16 02:44:431) Name of the substation and Time: At 220kV Gopalpur 02:00 Hrs 2) Name of element tripped/restored: 160MV tx 4 220/66kV 3) Relay Annunciation: differential, LV REF, Buchholz 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Discom instructed to shift load 6) Any other relevant information: 53 MW load effected, Shifted by TPDDL Regards, Delhi SLDC
202206160242132022-06-16 02:42:151) Name of the substation and Time: At 220kV Pragati 01:37 Hrs 2) Name of element tripped/restored: 220kV Sarita Vihar ckt 3) Relay Annunciation: At PGT: Z-1, 4 CN Phase , At SVR: 36.13km, BM Phase 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Tried but didnot hold. 220kV B/C put on at Pragati and MBG ckt put off.at 01:56Hrs 6) Any other relevant information: - Regards, Delhi SLDC
202206160239492022-06-16 02:39:511) Name of the substation and Time: At 220kV Gopalpur 01:30 Hrs 2) Name of element tripped/restored: 220kV Mandola ckt 2 3) Relay Annunciation: Y B Ph differential 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 220kV Wazirabad ckt 1 put on at 01:32 hrs 6) Any other relevant information: 75MW load effected Regards, Delhi SLDC
202206141837062022-06-14 18:37:081) Name of the substation and Time: 220kV Okhla 18:05Hrs 2) Name of element tripped/restored: 100MVA Transformer NO.4. 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: 100MVA Transformer, 220/66-33/11kV EMCO make, shifted from 220kV Pappankalan-1, to replace the damaged 100MVA 220/33kV transformer at 220kV Okhla. Regards, Delhi SLDC
202206141601442022-06-14 16:01:451) Name of the substation and Time: AT 15:30 Hrs,220 KV Lodhi Road 2) Name of element tripped/restored: 33 KV I/C-II with 33 KV HUDCO frd tripped 3) Relay Annunciation: 67N,86A,B 4) Details of physically damaged equipment: 33 KV HUDCO cable found puncture by JCB 5) Immediate corrective/system normalization steps performed: AT 15:40 Hrs 33 KV I/C -II Charge 6) Any other relevant information: Load effected aprox.60 MW onlay 10 Mint. and system normal Regards, Delhi SLDC
202206141547382022-06-14 15:47:391) Name of the substation and Time: 15:30Hrs.220KV I.P. 2) Name of element tripped/restored: 33 KV I/C-II 3) Relay Annunciation: Earth Fault ,Birdage 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: AT 15:38 HRS 33 KV I/C-II Charge and load taken 6) Any other relevant information: Load effected approx. 65 MW Only 09 Min. System Normal Regards, Delhi SLDC
202206130040212022-06-13 00:40:221) Name of the substation and Time: At Patparganj(23:26hrs). 2) Name of element tripped/restored: 66KV I/C-I and II. 3) Relay Annunciation: tripped on E/F,86. 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: Yard visited by grid staff, found OK. 6) Any other relevant information: 66KV B/C was on at the time of tripping. Regards, Delhi SLDC
202206130036392022-06-13 00:36:401) Name of the substation and Time: At Patparganj(23:03hrs) 2) Name of element tripped/restored: 66KV I/C- I and II 3) Relay Annunciation: tripped on E/F, 86. 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: BSES asked to C/O load. 6) Any other relevant information: No feeder tripped. Regards, Delhi SLDC
202206112025582022-06-11 20:25:591) Name of the substation and Time: 220kV Patparganj 19:07Hrs 2) Name of element tripped/restored: 220kV Bus-II, Tripped, resulting tripping of 220kV Geeta Colony ckt-1 and 2 and 220kV IP ckt-1 and 2. 3) Relay Annunciation: Bus Bar operated, resulting disturbance of 230MW load loss for 2 Min, and 19MW load shed due to overloading of 220kV Maharnibagh-Pragati ckt 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: 220kV Bus coupler switch ON at 220kV Pragati to manage load of 220kV IP and Rajghat S/stns 6) Any other relevant information: At 19:30 HRs 220kV Geeta Colony-Patparganj ckt 1 and 2 and 220kV IP-Pragati ckt 1 and 2 charged and load Normalized Regards, Delhi SLDC
202206072134502022-06-07 21:34:511) Name of the substation and Time: AT 21:20 HRS 220KV park street 2) Name of element tripped/restored: 30MVA Tx No-I and II charged/energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 20:45 HRS Prashad Nagar-II charged Regards, Delhi SLDC
202206072132222022-06-07 21:32:221) Name of the substation and Time: AT 20:17 HRS 220KV parkstreet 2) Name of element tripped/restored: 30MVA Tx No-I and II 3) Relay Annunciation: Any trip E/F HT 86 operated both tranformer 4) Details of physically damaged equipment: 33KV Prashad nagar-I porcelien part of Bus isolator insulator found crack 5) Immediate corrective/system normalization steps performed: 33KV Prashad nagar -2 taken load through 33KV Bus-I 6) Any other relevant information: approx 19MW load affected for 28Minutes only Regards, Delhi SLDC
202206072122312022-06-07 21:22:311) Name of the substation and Time: 16:39 HRS 400KV Mundka 2) Name of element tripped/restored: 220KV Mundka-Kanjhawala ckt tripped 3) Relay Annunciation: At Mundka RB phase zone 2 and 3 Distance 10.3.3KM,Ir 415A,Iy428A and Ib 241A 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Maintenance staff of KNJ taken PTW Regards, Delhi SLDC
202206071905172022-06-07 19:05:201) Name of the substation and Time: AT 400 KV CCGT BAWANA inter connectors put on at 16:35 Hrs 2) Name of element tripped/restored: both circuits 220 kv Shalimaar Baagh, 220 kv Rohini and DSIIDC ckts restored 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: both 400kV interconnectors made on and 315 MVA ICT 1, 4, 5, 6 normalized 6) Any other relevant information: approx. 750 MW Load affected Regards, Delhi SLDC
202206071858172022-06-07 18:58:181) Name of the substation and Time: test 2) Name of element tripped/restored: test 3) Relay Annunciation: test 4) Details of physically damaged equipment: test 5) Immediate corrective/system normalization steps performed: test 6) Any other relevant information: test Regards, Delhi SLDC
202206071700482022-06-07 17:00:501) Name of the substation and Time: At 16:01 400 KV CCGT BAWANA 2) Name of element tripped/restored: BOTH BUS OF 400 KV DEAD AT 400 KV CCGT BAWANA 3) Relay Annunciation: NA 4) Details of physically damaged equipment: 400 KV HISSAR LINE CONDUCTOR SNAPPED AND HANGING ON 400 KV BHADURGARH LINE 5) Immediate corrective/system normalization steps performed: 400 KV INTERCONNECTOR TO BE MADE ON 6) Any other relevant information: NRLDC ISSUED CODE FOR CONNECTING INTERCONNECTOR Regards, Delhi SLDC
202206061900122022-06-06 19:00:131) Name of the substation and Time: 220kV Peeragarhi, 18:50Hrs 2) Name of element tripped/restored: 100MVA Transformer No.1 charged. 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NEW 100MVA TRANSFORMER, TAL MAKE,2022 is installed and charged in replacement of old IMP make transformer damaged on 11.07.2021. Regards, Delhi SLDC
202206051719522022-06-05 17:19:541) Name of the substation and Time: At 17:03 HRS 400KV MBG 2) Name of element tripped/restored: 220KV Sarita vihar ckt tripped 3) Relay Annunciation: Relay MBG- Gen trip,R-phase trip, zone-I Distance 4.1KM SARITAVIHAR A/R L/O, Distance protection operated,zone-I R-phase, distance 8.351KM 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202206051637482022-06-05 16:37:491) Name of the substation and Time: At 16:35HRS 220KV Mehrauli 2) Name of element tripped/restored: 100MVA-II with 66KV I/C-II energised 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202206051521462022-06-05 15:21:471) Name of the substation and Time: At 14:34 HRS 220KV Mehrauli 2) Name of element tripped/restored: AT 14:34 HRS Transformer 1,3 and 4 energised. and system normalised 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: AT 14:34 HRS Transformer 1,3 and 4 energised. Load affected 140MW MW approx. And system normalised 6) Any other relevant information: AT 14:16 HRS 100 MVA-II also tripped w/o indication and did not closed Regards, Delhi SLDC
202206051516452022-06-05 15:16:471) Name of the substation and Time: At 220KV Mehrauli 14:16 HRS 100MVA-I and III tripped and Tx No-4 tripped at 14:22 HRS 2) Name of element tripped/restored: 100MVA-I and III tripped and Tx No-4 tripped at 14:22 HRS 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: AT 14:34 HRS Transformer 1,3 and 4 energised. Load affected 140MW MW approx. And system normalised 6) Any other relevant information: - Regards, Delhi SLDC
202206051508452022-06-05 15:08:461) Name of the substation and Time: AT 14:05 HRS 220KV TUGB 2) Name of element tripped/restored: 220KV TUGB-Mehrauli ckt-II charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 14:07HRS at VSK S/stn Load taken on 220KV mehrauli-II and 220KV Buscoupler made offf Regards, Delhi SLDC
202206051501572022-06-05 15:01:591) Name of the substation and Time: At 13:45 HRS 220KV TUGB 2) Name of element tripped/restored: 220KV TUGB Mehrauli ckt-II tripped 3) Relay Annunciation: Relay Zone-3,Zone-2,R.Y,B Phase trip Ir 11.39KA, Distance 9.5KM 4) Details of physically damaged equipment: Mehrauli-VSK-II supply failed breaker didnot trp at VSK Side 5) Immediate corrective/system normalization steps performed: AT 13:47 HRS ,Vasant Kunj -220KV CB of mehrauli -II manually trip and 220KV Buscoupler closed and system normalised at VSK,Load affected approx 57MW for 2 minutes at VSK. At 220KV Mehrauli-Due to DMRC one ckt affected 100MVA transformer shifted. 6) Any other relevant information: - Regards, Delhi SLDC
202206032237372022-06-03 22:37:391) Name of the substation and Time: CCGT Bawana, 22:04 Hrs 2) Name of element tripped/restored: GT-I, STG-I, Tripped, 300MW Generation loss 3) Relay Annunciation: Due to internal fault 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC
202206021943462022-06-02 19:43:471) Name of the substation and Time: At 17:55 HRS 220KV RPH 2) Name of element tripped/restored: 100MVA-2 with 33KV I/C-II charged and load taken 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202206021552122022-06-02 15:52:131) Name of the substation and Time: 220kV Rajghat, 14:55Hrs 2) Name of element tripped/restored: 33kV Incomer of 100MVA Tr. 2 manually switched of due to heave flashing in incomer isolator, 42MW Load affected for 8Min 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: PTW Issued 6) Any other relevant information: Buscoupler switched ON at 15:03Hrs to normalize the load Regards, Delhi SLDC
202206021158522022-06-02 11:58:531) Name of the substation and Time: 220kV Parkstreet 2) Name of element tripped/restored: 100/33kV TR No.1, Put on Load. 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC
202206020829552022-06-02 08:29:561) Name of the substation and Time: At SGTN(18:22hrs) 01.06.22 2) Name of element tripped/restored: 160MVA-II 3) Relay Annunciation: low gas pressure in BP-III chamber of 66KV I/C-II 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: Emergency S/D taken. 6) Any other relevant information: Permit issued to maintenance staff at 08:15hrs(02.06.22) Regards, Delhi SLDC
202206011456582022-06-01 14:57:011) Name of the substation and Time: 400 KV Mundaka at 14:29 hrs 2) Name of element tripped/restored: 400 Kv Bawana-Mundaka ckt-II tripped on distance prot R pahse ,zone-I ,7.87 KM,15.59 KA. from Mundka. No load affected 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205301956362022-05-30 19:56:371) Name of the substation and Time: AT 17:55HRS 400KV Bawana 2) Name of element tripped/restored: 400KV CB No-1552 and 400KV CB 1752 of 400KV lines of Maranibagh ckt-I and II charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202205301944582022-05-30 19:44:591) Name of the substation and Time: AT 17:36 HRS 220Geetacolony 2) Name of element tripped/restored: 220KV SOW-Geetacolony ckt-I and II charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202205301940142022-05-30 19:40:171) Name of the substation and Time: At 19:30HRS 220KV Gopalpur 2) Name of element tripped/restored: 220KV GOpalpur-mandola-II charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202205301923412022-05-30 19:23:451) Name of the substation and Time: At 19:21 HRS 220KV Kashmirigate 2) Name of element tripped/restored: 220KV KGT-SOW ckt-I charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202205301917322022-05-30 19:17:331) Name of the substation and Time: At 17:14 HRS 220KV Saritavihar 2) Name of element tripped/restored: 220KV SVR-Paragati ckt charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202205301902362022-05-30 19:02:381) Name of the substation and Time: At 18:58 HRS 220KV Saritavihar 2) Name of element tripped/restored: 220KV SVR-MBG ckt charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202205301845382022-05-30 18:45:391) Name of the substation and Time: 220 KV Gopal pur At 18:05 Hrs 2) Name of element tripped/restored: 220KV Gopalpur- Mandola ckt-1 charge 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202205301840562022-05-30 18:40:561) Name of the substation and Time: At 18:07 HRS 220KV TUGB 2) Name of element tripped/restored: 220kv TUGB-Mehrauli-II charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202205301837292022-05-30 18:37:341) Name of the substation and Time: At 18:01 HRS 220 Kv Geeta Colony 2) Name of element tripped/restored: 220KV Geeta-PPG-I charged 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202205301820162022-05-30 18:20:171) Name of the substation and Time: 220 kv Geeta Colony 18:02Hrs 2) Name of element tripped/restored: 220 KV Geeta colony - Kashmari gate ckt-1 Restroed at 18:03 Hrs 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202205301735042022-05-30 17:35:051) Name of the substation and Time: 400 kv BAWANA 2) Name of element tripped/restored: TIE CB#1552 AND 1752 TRIPPED OF 400 KV MAHARANI BAAG CKT.1 and 2 3) Relay Annunciation: W/O INDICATION 4) Details of physically damaged equipment: NO 5) Immediate corrective/system normalization steps performed: NO LOAD AFFECTED AS SUPPLY ON THROUGH MAIN BRKR 6) Any other relevant information: NA Regards, Delhi SLDC
202205301734302022-05-30 17:34:311) Name of the substation and Time: Various 220 kV elements tripped at from 16:25 hrs onwards 2) Name of element tripped/restored: SoW - K Gate Ckt 1 Geeta Colony - SoW Ckt 1 and 2 Geeta Colony - PPG ckt 1 M Bagh - Gazipur ckt - 1 M Bagh - Sarita Vihar Sarita Vihar - Pragati Mehrauli - Tugh Ckt - 2 Mehrauli - V Kunj Ckt - 2 3) Relay Annunciation: Details Avaited 4) Details of physically damaged equipment: Details Avaited 5) Immediate corrective/system normalization steps performed: Details Avaited 6) Any other relevant information: Total load reduction of about 2000 MW observed. Many 66kV and 33kV elements also tripped. Regards, Delhi SLDC
202205292149422022-05-29 21:49:431) Name of the substation and Time: At 400 KV Mundaka 2) Name of element tripped/restored: 400 KV Bawana-mundka ckt-II charged at 21:29 hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205292133132022-05-29 21:33:141) Name of the substation and Time: At 220 KV Narela 2) Name of element tripped/restored: 220 KV PNP ckt-III charged at 21:27 hrs, 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205291951132022-05-29 19:51:141) Name of the substation and Time: At 400 KV Bawana 2) Name of element tripped/restored: 400 Kv Abdullapur ckt charged at 19:23 hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205291831252022-05-29 18:31:261) Name of the substation and Time: 220kV Narela 18:14Hrs 2) Name of element tripped/restored: Panipat Ckt-I, II 65MW Load Affected for 3 Min At 18:17Hrs B/C ON 3) Relay Annunciation: Not informed 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: NIl Regards, Delhi SLDC
202205291828372022-05-29 18:28:381) Name of the substation and Time: 400kV Bawana 18:14Hrs 2) Name of element tripped/restored: 400kV Abdulapur 3) Relay Annunciation: B-Ph, Z-I, 12.8Km 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC
202205291826352022-05-29 18:26:351) Name of the substation and Time: 220kV Narela 17:49Hrs 2) Name of element tripped/restored: Panipat ckt-III 3) Relay Annunciation: RYB-Ph, Z-II, A/R LO 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC
202205291826272022-05-29 18:26:291) Name of the substation and Time: 220kV Narela 17:49Hrs 2) Name of element tripped/restored: Panipat ckt-III 3) Relay Annunciation: RYB-Ph, Z-II, A/R LO 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC
202205291602472022-05-29 16:02:481) Name of the substation and Time: At 15:42 HRS 400KV Mundka 2) Name of element tripped/restored: 400KV Mundka-bawana ckt-II 3) Relay Annunciation: Relay bawana-186A and B,Trip A phase,Zone-I trip ,Distance 10.95KM, Ia 18.22KA, Ib 836.9 A, Ic748.9A, In 18.25KA Mundka Relay R-phase trip zone-I,Distance 7.71KM, Ia 16.79 KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202205291435092022-05-29 14:35:101) Name of the substation and Time: At 14:31HRS, 400KV Mundka 2) Name of element tripped/restored: 400KV Mundka-Bawana ckt-II 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Ckt tried once held/Charged and load shared 6) Any other relevant information: - Regards, Delhi SLDC
202205291421212022-05-29 14:21:221) Name of the substation and Time: AT 13:29 HRs 400KV Mundka 2) Name of element tripped/restored: 400KV Munka-Bawana-II 3) Relay Annunciation: Tripping bawana-II Relay bawana-186A and B,Trip A phase,Zone-I trip ,Distance 11.07KM,Ia 18.19KA,Ib827.2A,Ic761.9A,In18.20KA Mundka Relay R-phase trip zone-I,Distance 7.83KM,Ia 16.35KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202205281127322022-05-28 11:27:331) Name of the substation and Time: 400kV Harsh Vihar 2) Name of element tripped/restored: 400kV Dadri ckt 1 charged at 10:45 and 400kV Dadri ckt 2 charged at 11:19 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202205272130512022-05-27 21:30:521) Name of the substation and Time: At 400KV Harsh Vihar(20:42hrs) 2) Name of element tripped/restored: 400KV Dadri ckt -I and II 3) Relay Annunciation: On Dadri-I-(B phase, Z-I, 32.6KM)and on Dadri-II(B phase, Z-I,44KM) 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: 220KV B/C put On at 220KV Patparganj. 6) Any other relevant information: All load restored. Regards, Delhi SLDC
202205271527382022-05-27 15:27:391) Name of the substation and Time: CCGT Bawana 15:05Hrs 2) Name of element tripped/restored: 400KV Bhiwani ckt tripped from both the ends. No load was affected 3) Relay Annunciation: Relat at CCGT end are R-phase Z-1 Earth fault 70.4km 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205261220262022-05-26 12:20:271) Name of the substation and Time: Park Street 2) Name of element tripped/restored: 100MVA 220/66KV T/F-2 charged at no load at 11:36Hrs which was made off on dated 20/5/2022 due to high acetylene gas. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205251021582022-05-25 10:21:591) Name of the substation and Time: 400kV Bamnauli 10:05Hrs 2) Name of element tripped/restored: 500MVA ICT -3, Charged 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC
202205250653292022-05-25 06:53:301) Name of the substation and Time: At Bamnoli(06:08hrs) 2) Name of element tripped/restored: 500MVA, ICT-III 3) Relay Annunciation: OLTC, BUCHOLZ, 30E, B phase 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: No load was affected. 6) Any other relevant information: 220KV I/C -III also tripped. Regards, Delhi SLDC
202205241447502022-05-24 14:47:511) Name of the substation and Time: At 220 KV Vasant Kunj 2) Name of element tripped/restored: 100 MVA tr-I charged at 14:24 hrs and again tripped on PRV at 14:38 hrs. 3) Relay Annunciation: PRV 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: No Load affected. Regards, Delhi SLDC
202205241424322022-05-24 14:24:331) Name of the substation and Time: At 220 KV PPK-I 2) Name of element tripped/restored: 100 MVA tr-II charged at 14:12 hrs. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202205241238562022-05-24 12:38:571) Name of the substation and Time: At 220 KV RK Puram 2) Name of element tripped/restored: 100 MVA-II (220/33 kv) charged at 10:45 hrs 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202205241237042022-05-24 12:37:061) Name of the substation and Time: At 220 KV PPK-I,12:20 hrs 2) Name of element tripped/restored: 100 MVA tr-II tripped on Buchholz relay 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: No load affected Regards, Delhi SLDC
202205241200422022-05-24 12:00:441) Name of the substation and Time: At 220 KV Narela 2) Name of element tripped/restored: 100 MVA Tr-II made manually off due to heavy oil leakage in 66 KV, B phae bushing. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NO Load affected. Regards, Delhi SLDC
202205240844022022-05-24 08:44:031) Name of the substation and Time: Patparganj 07:30Hrs 2) Name of element tripped/restored: 220KV Preet Vihar ckt-I tripped on earth fault. CVT coming at Patparganj end. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205240641182022-05-24 06:41:191) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: 220KV Preet Vihar ckt-I charged at 05:30Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205240639592022-05-24 06:40:001) Name of the substation and Time: RK Puram 01:08Hrs 2) Name of element tripped/restored: 100MVA 220/33KV T/F-2 tripped on 86 oil surge alarm. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205240635422022-05-24 06:35:441) Name of the substation and Time: Vasant kunj 02:42Hrs 2) Name of element tripped/restored: 100MVA T/F-1 tripped on PRV. No load was affected 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205240015512022-05-24 00:15:521) Name of the substation and Time: Narela 23:47Hrs 2) Name of element tripped/restored: 220KV Panipat ckt-III tripped on B-phase Z-1. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: nan 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205240014012022-05-24 00:14:021) Name of the substation and Time: Patparganj 23:01Hrs 2) Name of element tripped/restored: 220KV Preet Vihar ckt-I tripped on earth fault. CVT coming at Patparganj end. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205222147442022-05-22 21:47:461) Name of the substation and Time: At 20:58 HRS 220KV Parkstreet 2) Name of element tripped/restored: 33KV I/c no-I and II energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 33KV I/c no-I and II energized and system normalised Regards, Delhi SLDC
202205222145292022-05-22 21:45:311) Name of the substation and Time: At 20:44 Hrs 220KV Park street 2) Name of element tripped/restored: 33KV I/c no-I and 33KV I/C No-II 3) Relay Annunciation: 33KV I/c no-I and II Relay O/c R,Y and B phase trip,86 4) Details of physically damaged equipment: This tripping occured due to monkey 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Load affected approx 52 MW Normalised at 20:58 Hrs Regards, Delhi SLDC
202205212215252022-05-21 22:15:251) Name of the substation and Time: At 22:10HRs 220kV Dial 220kV Okhla 2) Name of element tripped/restored: Dial- BML Ckt2 charged Okhla-BTPS ckt2 charged 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC
202205212141042022-05-21 21:41:071) Name of the substation and Time: 220kV Naraina at 20:31 2) Name of element tripped/restored: 33kV Incomer of 100MVA Transformer No.1,2 and 3 tripped, Load shifted by Discom 3) Relay Annunciation: 33kV Incomer of Tr-1: E/F, 86 Tr-2: E/F, 86 Tr-3: O/C,E/F, 86 4) Details of physically damaged equipment: 33kV Incomer CB of 100MVA Tr No.3, Y-Phase pole damaged. 5) Immediate corrective/system normalization steps performed: Informed to S/stn staff to take corrective measure 6) Any other relevant information: 33kV Incomer of 100MVA Tr No.1 and 2 charged at 20:59Hrs Load Normalized Regards, Delhi SLDC
202205212004492022-05-21 20:04:491) Name of the substation and Time: At 400 KV Bawana:100 MVA tr charged at 19:56 hrs. 2) Name of element tripped/restored: NA 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202205211950252022-05-21 19:50:261) Name of the substation and Time: at 22o kv BTPS 2) Name of element tripped/restored: 220KV -BTPS-OKHLA-2 3) Relay Annunciation: 86,Z-2,B PH,5.6KM 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202205211947562022-05-21 19:47:571) Name of the substation and Time: at 400KV BML 2) Name of element tripped/restored: 220 kv Dail-BML-CKT-2 3) Relay Annunciation: 186 AB,Y PH, ZONE-1,2.7KM,17 KA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: no load effected Regards, Delhi SLDC
202205211919032022-05-21 19:19:061) Name of the substation and Time: 220kV Dial 18:53HRs 2) Name of element tripped/restored: 220kV BML-Dial ckt II 3) Relay Annunciation: Dial: Z-II, Y-Ph BML: Z-I, Y-PH, 2.7KM, 17KA 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to S/stn staff to ckeck the ckt 6) Any other relevant information: Nil Regards, Delhi SLDC
202205211845572022-05-21 18:45:581) Name of the substation and Time: 400kV Bawana time 18:21HRs 2) Name of element tripped/restored: 100MVA Tr along with 66kV In/comer 3) Relay Annunciation: Diffrential and LV- REF, 86A,B 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Informed to S/stn Staff to check the transformer 6) Any other relevant information: NIL Regards, Delhi SLDC
202205211358032022-05-21 13:58:041) Name of the substation and Time: At 13:14 HRs 220KV Parkstreet 2) Name of element tripped/restored: Restored 66KV I/c-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: All feeders shifted on bus-I Regards, Delhi SLDC
202205211355092022-05-21 13:55:101) Name of the substation and Time: At 12:46 HRS 220KV Parkstreet 2) Name of element tripped/restored: 66KV I/C-I 3) Relay Annunciation: 86,O/C Y-phase 4) Details of physically damaged equipment: (Conducter broken and fell on the ground) 5) Immediate corrective/system normalization steps performed: All feeder shifted to Bus-I and Energized all feeders at 13:14 HRS 6) Any other relevant information: At 13:14 HRS system normalised Approx 74MW load affected Regards, Delhi SLDC
202205211259162022-05-21 12:59:171) Name of the substation and Time: At 11:22 HRS 220KV Naraina 2) Name of element tripped/restored: 100MVA-3 with 66KV-I/C-3 and I/C-2 tripped 3) Relay Annunciation: Relay 86,O/C R,Y and b phase 4) Details of physically damaged equipment: 33KV kibri place-II CT Breaker damaged and jumper broken touching to bus-II 5) Immediate corrective/system normalization steps performed: Load shifted to Bus-I and 66KV I/C-3 breaker problem 6) Any other relevant information: Approx load affected 87 MW Regards, Delhi SLDC
202205210049382022-05-21 00:49:391) Name of the substation and Time: Sarita Vihar 00:27Hrs 2) Name of element tripped/restored: 220KV Pragati ckt tripped. 3) Relay Annunciation: Relay at Sarita Vihar end are Z-1 B-phase 2.28km fault current 23.49KA. Relay at Pragati end are Z-2 C-phase 13.04km fault current 8.36KA. No load was affected. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205202302302022-05-20 23:02:301) Name of the substation and Time: Rohini-1 2) Name of element tripped/restored: 220KV Shalimar Bagh ckt-II charged at 22:58Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205202300152022-05-20 23:00:161) Name of the substation and Time: Rohini-1 21:35Hrs 2) Name of element tripped/restored: 220KV Shalimar Bagh ckt-II tripped on B-phase differential trip. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205202256082022-05-20 22:56:091) Name of the substation and Time: Rohini-1 21:35Hrs 2) Name of element tripped/restored: 220KV Shalimar Bagh ckt-II tripped on B-phase differential trip. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205202253362022-05-20 22:53:371) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: 220KV Mandaula ckt-II tripped at Mandaula end at 22:31Hrs. 3) Relay Annunciation: Relay at Mandaula end are B-phase 12.38km fault current 11.16KA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: Load affected was 140MW. Load normalised through 220KV SOW ckt-I at 22:35Hrs. 6) Any other relevant information: na Regards, Delhi SLDC
202205202251522022-05-20 22:51:531) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: 220KV Mandaula ckt-II tripped at Mandaula end at 22:31Hrs. 3) Relay Annunciation: Relay at Mandaula end are B-phase 12.38km fault current 11.16KA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: Load affected was 140MW. Load normalised through 220KV SOW ckt-I at 22:35Hrs. 6) Any other relevant information: na Regards, Delhi SLDC
202205202127262022-05-20 21:27:261) Name of the substation and Time: Bamnauli 2) Name of element tripped/restored: 220KV Dial ckt-II charged at 20:04Hrs and load taken at 20:44Hrs and ckt again tripped at 20:49Hrs. 3) Relay Annunciation: Relay at Bamnauli end Z-1 B-phase 2.2km fault current 17.34KA. Relay at Dial end are Y-phase Z-2 general trip fuse fail. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: 220KV Mehrauli-Dial ckt-II closed 6) Any other relevant information: na Regards, Delhi SLDC
202205202122452022-05-20 21:22:461) Name of the substation and Time: Bamnauli 2) Name of element tripped/restored: 220KV Najafgarh ckt-I charged at 19:42Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205201934002022-05-20 19:34:001) Name of the substation and Time: Bamnauli 18:57Hrs. 2) Name of element tripped/restored: Najafgarh ckt-I 3) Relay Annunciation: Relay at Bamnauli end are R-phase Z-2 8.6km fault current 7.8KA. Relay at Najafgarh end are RYB-phase Z-1. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: No load was affected Regards, Delhi SLDC
202205201930232022-05-20 19:30:301) Name of the substation and Time: Dial 18:55Hrs 2) Name of element tripped/restored: Bamnauli ckt-II 3) Relay Annunciation: Relay at Dial end are YB-phase Z-2 general trip. Relay at Bamnauli end are B-phase Z-1 2.59km fault current 17.5KA. 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: Mehrauli-Dial ckt-II closed. 6) Any other relevant information: No load was affected Regards, Delhi SLDC
202205201301482022-05-20 13:01:491) Name of the substation and Time: At 12:55 HRS 220 KV Sarita vihar 2) Name of element tripped/restored: 220KV SVR-MBG CKT 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: CKT Energized at 12:55HRS Regards, Delhi SLDC
202205200620562022-05-20 06:20:571) Name of the substation and Time: At 220KV Rajghat(05:19hrs) 2) Name of element tripped/restored: 33KV I/c-I, 33KV I/C-II and 33KV B/C 3) Relay Annunciation: 33KV I/C-I and II on O/C ,E/F ,B phase while B/C on W/I. 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: Discoms asked to C/O load till clearance from grid. 6) Any other relevant information: Monkey found electrocuted in the yard. Regards, Delhi SLDC
202205191632102022-05-19 16:32:111) Name of the substation and Time: Sarita Vihar 16:08Hrs 2) Name of element tripped/restored: 220KV Maharani Bagh ckt tripped on C-phase Z-1 4.5km, fault current 4KA. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205171942332022-05-17 19:42:341) Name of the substation and Time: At 19:40 HRS 400KV MBG 2) Name of element tripped/restored: 220KV SVR MBG CKT Energized 3) Relay Annunciation: -- 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202205171906102022-05-17 19:06:111) Name of the substation and Time: At 18:46 Hrs 400KV Maharani bagh 2) Name of element tripped/restored: 220KV SVR ckt 3) Relay Annunciation: SVR-Trip zone-I,Trip b,c phase distance 8.5 KM,Ia 70.11A,Ib 2.149KA,Ic2.137KA In 35.06A MBG Trip L1L2 Distance 2.4KM L1-0A L218KA and l318KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Noload affected Regards, Delhi SLDC
202205171202142022-05-17 12:02:15SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Data of the following stations are not updating :220 KV Peeragarhi,220 KV Trama centre,220 Kv Rohini-II 220 KV Wazirpur,220 KV IP lines data and 315 MVA ICT-II at Bawana 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC
202205152339502022-05-15 23:39:511) Name of the substation and Time: Harsh Vihar 2) Name of element tripped/restored: 400KV Dadri ckt-I charged at 23:25Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205152235392022-05-15 22:35:401) Name of the substation and Time: Harsh Vihar 21:26Hrs 2) Name of element tripped/restored: 400KV Dadri ckt-I tripped on general trip RYB phase 0.1km Z-1 fault current 10.65KA SOTF. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205151925092022-05-15 19:25:091) Name of the substation and Time: Tughlakabad 2) Name of element tripped/restored: 220KV Okhla ckt-I charged at 19:23Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205151913462022-05-15 19:13:461) Name of the substation and Time: Narela 2) Name of element tripped/restored: 220KV DSIDC ckt-I charged at 19:05Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205151816392022-05-15 18:16:401) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: 220KV Mandaula ckt-I charged at 17:51Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205151811412022-05-15 18:11:421) Name of the substation and Time: Tughlakabad 2) Name of element tripped/restored: 220KV Mehrauli ckt-II charged at 17:51Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205151709522022-05-15 17:09:521) Name of the substation and Time: At 220KV Narela(14:20hrs) 2) Name of element tripped/restored: 220KV DSIIDC ckt-I 3) Relay Annunciation: R phase ,Zone-I 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: Patrolling underway. 6) Any other relevant information: circuit was charged at No load from Narela end. Regards, Delhi SLDC
202205151705362022-05-15 17:05:371) Name of the substation and Time: At 220KV Tughlakabad(14:46hrs) 2) Name of element tripped/restored: 220KV Okhla ckt-I 3) Relay Annunciation: Y and B phase trip(24KA fault), 3.8KM distance. 4) Details of physically damaged equipment: None reported by grid staff. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Okhla and load normalized on BTPS ckts. 6) Any other relevant information: 220KV Tughlakabad ckt-II is already out since yesterday. Regards, Delhi SLDC
202205151700522022-05-15 17:00:531) Name of the substation and Time: At Tughlakabad(14:01hrs) 2) Name of element tripped/restored: 220KV Mehrauli ckt-II 3) Relay Annunciation: R phase,12.82KA fault, 9 KM distance. 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: BSES asked to C/O their load. 6) Any other relevant information: Partial load of 220KV Mehrauli and Vasant Kunj station was affected. Line Patrolling underway. Regards, Delhi SLDC
202205151519172022-05-15 15:19:181) Name of the substation and Time: gopalpur 13:23 hrs 2) Name of element tripped/restored: supply failed from mandola on 220 kV mandola 1 3) Relay Annunciation: distance protection at mandola end 4) Details of physically damaged equipment: none reported 5) Immediate corrective/system normalization steps performed: load taken on SoW -2 6) Any other relevant information: line being patrolled Regards, Delhi SLDC
202205142300392022-05-14 23:00:401) Name of the substation and Time: At22:50 HRS 220KV Parkstreet 2) Name of element tripped/restored: 100MVA-I with 66KV I/C No-I energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202205141951222022-05-14 19:51:231) Name of the substation and Time: At 18:02 HRS 220KV Parkstreet 2) Name of element tripped/restored: 100MVA-I with 66KV I/C No-I and 66KV I/C No-II 3) Relay Annunciation: 100MVA-I O/C and E/F 66Kvi/C-II intertripping 4) Details of physically damaged equipment: 66KV Buscoupler B-phase CT Damaged/burnt 5) Immediate corrective/system normalization steps performed: At 18:54 Hrs 66KV I/C-II charged 6) Any other relevant information: approx 100MW Load affected. Maintenanace team will test 100MVa-I transformer Regards, Delhi SLDC
202205141725382022-05-14 17:25:391) Name of the substation and Time: At 17:00Hrs,220 KV Tunglakabad 2) Name of element tripped/restored: 220 Kv Okhla-Tugb ckt-I Restored 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202205141423592022-05-14 14:24:011) Name of the substation and Time: tughlakabad @13:29 2) Name of element tripped/restored: okhla ckt 1 and 2 3) Relay Annunciation: distance protection 4) Details of physically damaged equipment: none reported by O and M 5) Immediate corrective/system normalization steps performed: Okhla Load taken on BTPS by closing bus coupler 6) Any other relevant information: 100 MW Regards, Delhi SLDC
202205131608122022-05-13 16:08:201) Name of the substation and Time: 220kV Pappankalan 2 at 15:55hrs 2) Name of element tripped/restored: 220kV Bamnauli ckt 2 normalized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202205131330542022-05-13 13:30:561) Name of the substation and Time: At 400kV Bamnauli 12:58 Hrs 2) Name of element tripped/restored: 220kV Pappankalan 2 ckt 2 at Bamnoli end only 3) Relay Annunciation: Z-1, 8.6km, 8.9kA R Ph. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 220kV B/C put on at 13:07 hrs at PPK-2 6) Any other relevant information: 85MW load effected. Delayed normalization due to communication failure. Lne being patrolled. Regards, Delhi SLDC
202205102147282022-05-10 21:47:29SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Data of the following station are not updating : 1) 220 KV Masjid Moth, 2)Trama center, 3) Peeragarhi 4) Rohini-II 5) Wazirpur. 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC
202205102032352022-05-10 20:32:351) Name of the substation and Time: 220kV SOW 20:28 HRs 2) Name of element tripped/restored: SOW-MAnadaula ckt-1 charged 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC
202205101903182022-05-10 19:03:191) Name of the substation and Time: 220kV SOW 18:56 2) Name of element tripped/restored: 220kV SOW-Mandaula Ckt 3 charged 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC
202205101848142022-05-10 18:48:151) Name of the substation and Time: 220kV Kanjhawal 18:42 HRs 2) Name of element tripped/restored: 20MVA Tr NO.1 charged 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC
202205101847152022-05-10 18:47:151) Name of the substation and Time: 220kV Kanjhawal 18:42 HRs 2) Name of element tripped/restored: 20MVA Tr NO.1 charged 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC
202205101827122022-05-10 18:27:141) Name of the substation and Time: 220kV SOW, 18:06HRs 2) Name of element tripped/restored: 220kV SOW-Mandaula ckt 1 and ckt 3 3) Relay Annunciation: SOW-Mandaula ckt1, at SOW- Y-B Ph, Distance Z1 A/R Lockout, 2.741 Km, 86ABC. At Mandaula- Y-B Phase, 11.00Km, No Indication at SOW-Mandaula ckt 3 at both ends, only CB from Mandaula end tripped, CB at SOW end is in ON position 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: SOW staff is informed to check the ckt and give clearance 6) Any other relevant information: Nil Regards, Delhi SLDC
202205101227482022-05-10 12:27:481) Name of the substation and Time: Kanjhawala 2) Name of element tripped/restored: 20MVA T/F-1 tripped on RYB differential at 11:48Hrs. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205101144332022-05-10 11:44:341) Name of the substation and Time: Test Message. Please Ignore 2) Name of element tripped/restored: Test Message. Please Ignore 3) Relay Annunciation: Test Message. Please Ignore 4) Details of physically damaged equipment: Test Message. Please Ignore 5) Immediate corrective/system normalization steps performed: Test Message. Please Ignore 6) Any other relevant information: Test Message. Please Ignore Regards, Delhi SLDC
202205091019412022-05-09 10:19:42SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Data of the following station are not updating from last few days: 2) 220 KV Masjid Moth,Trama center,Peeragarhi. 3) na 4) nan 5) na 6) na Regards, Delhi SLDC
202205082325032022-05-08 23:25:031) Name of the substation and Time: IP, 19:05 2) Name of element tripped/restored: 33 kV Incomer 1 and 2 3) Relay Annunciation: EF 4) Details of physically damaged equipment: Bay 10 5) Immediate corrective/system normalization steps performed: . 6) Any other relevant information: 33 kV Bay 10 still being attended by DTL maintenance Regards, Delhi SLDC
202205082023032022-05-08 20:23:041) Name of the substation and Time: 220 kV IP at 18:35 hrs 2) Name of element tripped/restored: 33 kV incomer 1 and 2, 3) Relay Annunciation: EF 4) Details of physically damaged equipment: B phase insulator disc of 33 kV Bay 10, EL, East Bus damaged 5) Immediate corrective/system normalization steps performed: immediate load loss of about 100 MW 6) Any other relevant information: monkey electrocuted at Bay 10. Regards, Delhi SLDC
202205051549212022-05-05 15:49:221) Name of the substation and Time: At 400kV Bawana at 12:24 Hrs 2) Name of element tripped/restored: CGL Make 315MVA ICT 2 energized on no load 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202205041843402022-05-04 18:43:411) Name of the substation and Time: Bawana 2) Name of element tripped/restored: 220KV DSIDC ckt-I charged at 17:40Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205041537422022-05-04 15:37:431) Name of the substation and Time: 400KV BAWANA 14.20 2) Name of element tripped/restored: 220KV DSIDC CKT-1 and 2 3) Relay Annunciation: 220KV DSIDC BAWANA CKT-1 ZONE 1 ,RYB PH TRIP,DIS OPTD,FALUT LOCATION 4.36 KM ,ia=12.53 ka, ib=12.2 ka ic=404.7 amp 220KV DSIDC BAWANA CKT-2 ZONE 1 ,RYB PH TRIP,DIS OPTD,FALUT LOCATION 40KM IA=508 AMP,IB=6.035 KA ,IC 5.85 KA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 220KV NARELA CKT-1 and 2 MADE ON AND SUPPLY RESTORED 6) Any other relevant information: 160 MW EFFECTED FOR 15 MINT. Regards, Delhi SLDC
202205031040492022-05-03 10:40:501) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: 160MVA T/F-4 tripped without indication at 10:01Hrs. Load affected was 49MW, discoms had shifted their load. At 10:16Hrs 160MVA T/F-4 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205031037032022-05-03 10:37:031) Name of the substation and Time: Geeta Colony 2) Name of element tripped/restored: 100MVA T/F-2 charged at 10:20Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205031034062022-05-03 10:34:071) Name of the substation and Time: Geeta Colony 2) Name of element tripped/restored: 100MVA T/F-2 charged at 10:20Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205030952582022-05-03 09:52:591) Name of the substation and Time: Geeta Colony 2) Name of element tripped/restored: 100MVA T/F-2 tripped on buchholz relay at 09:22Hrs. Load affected was 18MW. Load normalised through 33KV B/C at 09:27Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202205011206082022-05-01 12:06:091) Name of the substation and Time: 220kV Maharani bagh 12:02Hrs 2) Name of element tripped/restored: Maharanibagh- Gazipur ckt 2 charged 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC
202205011102432022-05-01 11:02:441) Name of the substation and Time: 220kV Maharani bagh at 10:43 AM 2) Name of element tripped/restored: 220kV Maharani bagh- Gazipur ckt-II 3) Relay Annunciation: B-Phase Differential 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Conveyed to 220kV S/stn staff to check the ckt and give clearance if ckt found ok 6) Any other relevant information: Nil Regards, Delhi SLDC
202204291707392022-04-29 17:07:401) Name of the substation and Time: At Harsh Vihar(16:58hrs) 2) Name of element tripped/restored: 400KV Dadri-II 3) Relay Annunciation: R-N phase fault at Dadri end. 4) Details of physically damaged equipment: None. 5) Immediate corrective/system normalization steps performed: System was already restored. 6) Any other relevant information: ICT-III was energized at 16:12hrs.(It was erroneously reported to be 15:55 in earlier message). Regards, Delhi SLDC
202204291701472022-04-29 17:01:471) Name of the substation and Time: At Harsh Vihar(15:22hrs). 2) Name of element tripped/restored: 400KV Dadri-I 3) Relay Annunciation: E/F , B phase, D/P ,4.10KM at Dadri end. 4) Details of physically damaged equipment: None. 5) Immediate corrective/system normalization steps performed: Circuit restored after supply fron Dadri received. 6) Any other relevant information: 400KV B/C at Harsh Vihar was normalized simultaneously. ICT-III normalized at 15:55hrs. Regards, Delhi SLDC
202204291653432022-04-29 16:53:441) Name of the substation and Time: At Harsh Vihar(14:43hrs) 2) Name of element tripped/restored: Supply from 400KV Dardri-II failed. Earlier supply from Dadri -I had failed at 14:28hrs. 3) Relay Annunciation: Supply fail from Dadri.Breakers of Dadri I and II didnt trip at Harsh Vihar station. 4) Details of physically damaged equipment: None. 5) Immediate corrective/system normalization steps performed: 220Kv Gazipur ckt put ON and load of Patparganj station restored. Load of Harsh Vihar and Preet Vihar station were C/O by BSES. 6) Any other relevant information: Dadri-Harsh Vihar Ckts were feeding Preet Vihar and Patparganj station at the time of tripping. Simultaneously 400KV B/C and ICT-III had tripped at Harsh Vihar (14:43hrs). Regards, Delhi SLDC
202204281933032022-04-28 19:33:041) Name of the substation and Time: At 17:20HRS ,400KV MUNDKA 2) Name of element tripped/restored: 315 MVA-ICT-IV 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 315 MVA-ICT-IV energised at 17:20HRS Regards, Delhi SLDC
202204272126242022-04-27 21:26:251) Name of the substation and Time: 220kV SGTN at 16:45Hrs 2) Name of element tripped/restored: 160MVA Tr no. 1, manually switched off by S/stn staff 3) Relay Annunciation: Low gas pressure in BPI-III at 66kV In comer No.1, Line Isolator 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Check the gas pressure and take necessary action 6) Any other relevant information: NIL Regards, Delhi SLDC
202204270735202022-04-27 07:35:211) Name of the substation and Time: Patparganj 06:50Hrs 2) Name of element tripped/restored: 100MVA 220/66KV T/F-1 tripped without indication. No load was affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204270733192022-04-27 07:33:201) Name of the substation and Time: Naraina 2) Name of element tripped/restored: 33KV I/C-2 and 33KV I/C-3 tripped on O/C B=phase E/F at 05:22Hrs. Grid staff had reported fire in 33KV Bus-II B-phase cable extension. Load affected was 65MW. Discoms had shifted their load. At 06:40Hrs 33KV I/C-3 and 33KV feeders charged on 33KV Bus-I. At 07:08Hrs 33KV I/C-2 charged. Presently 33KV Bus-II is out 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204270732342022-04-27 07:32:351) Name of the substation and Time: Naraina 2) Name of element tripped/restored: 33KV I/C-2 and 33KV I/C-3 tripped on O/C B=phase E/F at 05:22Hrs. Grid staff had reported fire in 33KV Bus-II B-phase cable extension. Load affected was 65MW. Discoms had shifted their load. At 06:40Hrs 33KV I/C-3 and 33KV feeders charged on 33KV Bus-I. At 07:08Hrs 33KV I/C-2 charged. Presently 33KV Bus-II is out 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204261333392022-04-26 13:33:401) Name of the substation and Time: 11:31 at 220kV PPG 2) Name of element tripped/restored: 220kV IP-1 and 2, 220kV Geeta Colony -1 and 2, 220kV Preet Vihar -1 and 2, 100MVA (220/66kV) Tx 2 3) Relay Annunciation: Bus Bar Protection. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Partial load normalised through Pragati bus coupler 6) Any other relevant information: Suppply fail at IP, RPH, Pragati Bus-2 and Park Street 66kV. Load Loss 430 MW approx and generation loss 270 MW approx. EVentually Load normalised by 11:58Hrs and system normalised by 12:05 Hrs. Generation being brought up on bar. Regards, Delhi SLDC
202204261052182022-04-26 10:52:191) Name of the substation and Time: At 220kV lodhi Road 09:07 Hrs 2) Name of element tripped/restored: 220kV Maharanibagh ckt 2 normalized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202204260828012022-04-26 08:28:021) Name of the substation and Time: At Maharani Bagh(22:02hrs) 2) Name of element tripped/restored: 220KV Lodi Road ckt-II 3) Relay Annunciation: Zone-1, 2.4KM, (L3)21.18KA fault current. 4) Details of physically damaged equipment: Not known yet. 5) Immediate corrective/system normalization steps performed: 220KV B/C put ON at Lodi Road end. 6) Any other relevant information: Supply fail at Lodi Road end. Regards, Delhi SLDC
202204260120272022-04-26 01:20:281) Name of the substation and Time: At Vasant Kunj(22:57hrs) 2) Name of element tripped/restored: 100MVA-I(220/66KV) transformer. 3) Relay Annunciation: 96 bus bar protection 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: 160MVA transformer taken on Load. 6) Any other relevant information: However No load was affected. Regards, Delhi SLDC
202204260116532022-04-26 01:16:531) Name of the substation and Time: At Bamnauli(23:40hrs) 2) Name of element tripped/restored: 220KV Dial ckt-II 3) Relay Annunciation: Zone-I, B phase, 17.69KA fault. 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: 220KV Vasant Kunj-RK Puram ckt-II put ON in case of tripping of Bamnauli-DIAL ckt-I. 6) Any other relevant information: ckt tried from Bamnauli end , held OK. Regards, Delhi SLDC
202204260112582022-04-26 01:13:001) Name of the substation and Time: AT Tughlakabad(22:50hrs) 2) Name of element tripped/restored: 220KV Mehrauli-II 3) Relay Annunciation: D/P R and Y phase trip, 14KA fault. 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: load C/O by BSES,B/C put ON at Vasant Kunj 6) Any other relevant information: Ckt tried from Tughlakabad end after patrolling. Regards, Delhi SLDC
202204252218122022-04-25 22:18:131) Name of the substation and Time: BAMNAULI 21:24 2) Name of element tripped/restored: DIAL2 3) Relay Annunciation: DP Z1 2.627 km B-Ph 17.69 kA 4) Details of physically damaged equipment: NONE REPORTED 5) Immediate corrective/system normalization steps performed: NO LOAD AFFECTED 6) Any other relevant information: STRONG WINDS REPORTED Regards, Delhi SLDC
202204252127172022-04-25 21:27:171) Name of the substation and Time: At 220KV Tughlakabad(20:37hrs) 2) Name of element tripped/restored: 220KV Mehrauli-II 3) Relay Annunciation: Zone-II, R and Y phase trip, 10.10KM, and 14.22KA fault. 4) Details of physically damaged equipment: NOT KNOWN YET. 5) Immediate corrective/system normalization steps performed: BSES ASKED TO C/O LOAD. 220kV B/C PUT ON AT VASANT KUNJ STATION. 66KV FATEHPUR BERI-I C/O AT MEHRAULI STATION. 6) Any other relevant information: 220KV Bus-II at Mehrauli still out. Due to protection issues at 220KV Mehrauli station ,Supply from DIAL avoided at Mehrauli . Regards, Delhi SLDC
202204242250292022-04-24 22:50:321) Name of the substation and Time: 220kV Lodhi Road 22:05Hrs 2) Name of element tripped/restored: 100MVA TR NO.1 Tripped, 49MW Load affect for 7 Min 3) Relay Annunciation: Diff R,Y,B REF HV side, 86A, 33kV In Comer 86 A and B 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed Discom to shift load 6) Any other relevant information: Nil Regards, Delhi SLDC
202204241604022022-04-24 16:04:041) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 13:09Hrs 160MVA T/F-4 charged. At 14:23Hrs 100MVA T/F-1 and 100MVA T/F-3 charged. At 14:30Hrs 100MVA T/F-2 charged and presently no load is affected. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204241222512022-04-24 12:22:541) Name of the substation and Time: Mehrauli 10:42Hrs 2) Name of element tripped/restored: 160MVA T/F-4 tripped on 86. 66KV I/C-4 and 66KV I/C-2 tripped on O/C Y-phase. Grid staff have reported blast and fire in Y-phase CT of 66KV C-2. Load affected was approx 100MW. All outgoing feeder have been made off to control the fire on 66KV side and discoms have shifted their load. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204240817202022-04-24 08:17:211) Name of the substation and Time: At08:07HRS,PPK-II 2) Name of element tripped/restored: 220KV Bamnauli-ckt-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220KV CB of bamnauli ckt-I closed held o.k and 220KV Buscoupler off Regards, Delhi SLDC
202204240655102022-04-24 06:55:111) Name of the substation and Time: At 05:41 HRS , 220KV PPK-II 2) Name of element tripped/restored: 220KV Bamnauli ckt-I 3) Relay Annunciation: Bamnauli-186A and B,86T, Main-I Zone-I Distance 5.9KM,IB-13.65KA PPK-II Main-I B and N Trip,zone-I distance 6.4 KM main-II R and Y PH TRIP ,86A 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: At 05:43 hrs, 220KV Buscoupler closed at PPK-II Load normalised 6) Any other relevant information: At 06:11 HRS Tried to close at Bamnauli end held OK and Circuit Breaker didnot close at PPK-II due to P/D relay operated Regards, Delhi SLDC
202204200008332022-04-20 00:08:341) Name of the substation and Time: At 220 KV Sarita Vihar 2) Name of element tripped/restored: 220 KV Maharani bagh ckt charged at 00:05 hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204192129352022-04-19 21:29:361) Name of the substation and Time: 220kV Sarita Vihar, 21:24HRs 2) Name of element tripped/restored: 220kV Sarita vihar-Maharanibagh ckt 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Sparking reported by local residents near tower no.30 5) Immediate corrective/system normalization steps performed: 220kV Sarita vihar- Maharanibagh ckt switched off 6) Any other relevant information: Informed to concerned DGM and Manager to look into this matter Regards, Delhi SLDC
202204152306192022-04-15 23:06:201) Name of the substation and Time: 22:28Hrs 220 KV Geeta Colony S/Stn 2) Name of element tripped/restored: 100 P.Tr. NO-1 3) Relay Annunciation: - 4) Details of physically damaged equipment: Removed the kite thread on 220 KV Bus-II 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Total System Normlised at 220 Geeta Colony S/Stn Regards, Delhi SLDC
202204152040282022-04-15 20:40:291) Name of the substation and Time: At 19:45 HRS,220KV RPH 2) Name of element tripped/restored: 220KV IP ckt -I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 19:45 HRS ckt normalised 6) Any other relevant information: -system is normal at RPH Regards, Delhi SLDC
202204152038032022-04-15 20:38:041) Name of the substation and Time: At:18:40 HRS,220KV RPH 2) Name of element tripped/restored: 220KV IP Ckt-I 3) Relay Annunciation: 86A,B,C and 186X and Distance zone-I 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: AT 18:45 HRS 33KV Bus coupler closed load normalised. Approx 37MW Load affected 6) Any other relevant information: - Regards, Delhi SLDC
202204152033352022-04-15 20:33:361) Name of the substation and Time: At 18:40 HRS,220KV Geeta Colony 2) Name of element tripped/restored: 220KV SOW-Ckt-I,220KV BUS COUPLER,220KV PPG-I,100MVA-I 3) Relay Annunciation: Main-I BUS BAR OPERATED 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 18:57 HRS 33KV BUS COUPLER closed load Normalised,approx 40MW load affected 19:10 220Kv Bus coupler closed 19:20 220KV SOW-I closed 19:24 PPG-I closed 6) Any other relevant information: System is normal except 100MVA-I Regards, Delhi SLDC
202204150014592022-04-15 00:15:001) Name of the substation and Time: bamnauli 23:36 2) Name of element tripped/restored: najafgarh 1 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: as per request of maintenance, load to be taken in the morning Regards, Delhi SLDC
202204142009422022-04-14 20:09:431) Name of the substation and Time: At 220KV Najafgarh(19:28hrs) 2) Name of element tripped/restored: 220KV Bamnauli-I 3) Relay Annunciation: R phase, D/P. 4) Details of physically damaged equipment: No damage but tripped with sparking and heavy sound. 5) Immediate corrective/system normalization steps performed: Load taken on 220KV Mundka ckt. 6) Any other relevant information: Both end tripping. Regards, Delhi SLDC
202204121921172022-04-12 19:21:181) Name of the substation and Time: 220kV Masjid Moth at 17:55 Hrs 2) Name of element tripped/restored: 33kV I/c 3 tripped on 86. 33kV Balaji Yph CT blast but ckt didnot trip 3) Relay Annunciation: - 4) Details of physically damaged equipment: 33kV Balaji Yph CT blast 5) Immediate corrective/system normalization steps performed: Load Shifted by Discom by 18:04 as Grid staff was busy dousing fire. 33kV B/C put on at 18:15 Hrs. 6) Any other relevant information: 64MW load effected which was normalized by BRPL by 18:04 Hrs. I/C 3 closed at 19:00 Hrs. Regards, Delhi SLDC
202204111427062022-04-11 14:27:071) Name of the substation and Time: 220kV DIAL 2) Name of element tripped/restored: 220kV Bamnauli ckt 1 3) Relay Annunciation: At 220kV DIAL, 220kV Bamnauli 1 tripped on Rph, z-2, 86, Ir=1.1kA, At Bamnauli end: Z-2, Rph, 135.7km, 186AB, Ir=64.8A. 4) Details of physically damaged equipment: Fault led to tripping of 220kV Bamnauli 1 and 2 At Najafgarh 5) Immediate corrective/system normalization steps performed: ckt tried from Bamnauli at 14:08 Held ok 6) Any other relevant information: no load effected at DIAL. Regards, Delhi SLDC
202204111422472022-04-11 14:22:481) Name of the substation and Time: 13:37, 220kV Najafgarh 2) Name of element tripped/restored: 220kV Bamnauli 1 and 2, Lines remained charged at Bamnauli end. 3) Relay Annunciation: Tripped by BCU on Voltage fluctuation. 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Both ckts closed at 13:40 Hrs 6) Any other relevant information: effecting 160MW load at Najafgarh. Regards, Delhi SLDC
202204111341022022-04-11 13:41:031) Name of the substation and Time: 220kV Narela 2) Name of element tripped/restored: 220kV Mandola ckt 1 3) Relay Annunciation: At Narela end: R ph distance trip. Main 86A relay burnt . At Mandola end: R-E fault, Ir=7.1kA, dist 15.6km 4) Details of physically damaged equipment: Main 86A relay burnt 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: no load effected Regards, Delhi SLDC
202204102230492022-04-10 22:30:501) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 20:48Hrs 100MVA T/F-1 tripped on O/C R and B-phase, 66KV I/C-2 and 66KV I/C-3 tripped without indication. Load affected was approx. 140MW. At 21:08Hrs 66KV I/C-2 and 66KV I/C-3 charged and load normalised. At 21:38Hrs 160MVA T/F-4 tripped on O/C Y-phase. At 22:00Hrs 160MVA T/F-4 charged At 22:04Hrs 100MVA T/F-1 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204101743062022-04-10 17:43:071) Name of the substation and Time: Kanjhawala 2) Name of element tripped/restored: 220KV Bawana ckt I and II charged at 17:38Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204101739232022-04-10 17:39:231) Name of the substation and Time: Tughlakabad 2) Name of element tripped/restored: 220KV Mehrauli ckt-II charged at 17:26Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204101736592022-04-10 17:37:001) Name of the substation and Time: Tughlakabad 2) Name of element tripped/restored: 220KV Mehrauli ckt-II charged at 17:26Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204101535452022-04-10 15:35:461) Name of the substation and Time: 14:47HRS and 14:48 HRS 400KV BAWANA 2) Name of element tripped/restored: 220KV KNJ CKTI and II tripped 3) Relay Annunciation: (KNJ-I-Relay R-Phase trip zone-I Distance trip zone-II R and B phase F/L 2.627km) (knj-II-Relay-Y and B phase trip zone-I f F/L-1.435 KM) 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: AT 14:55 HRS 220KV Buscoupler closed at KNJ and load taken on 220KV Mundka ckt load normalised... 6) Any other relevant information: - Regards, Delhi SLDC
202204101527402022-04-10 15:27:411) Name of the substation and Time: 13:24HRS,220KV TUGB 2) Name of element tripped/restored: 220KV Mehrauli ckt-II 3) Relay Annunciation: Rphase trip,zone-II,F/L 8.8KM,If 13.9KA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 13:28HRS,220KV Buscoupler closed at 220KV Vasant KUNG station.220KV RKP ckt-II supply given and load taken 6) Any other relevant information: Mehrauli 160MVA transfred to TUGB-CKT-I.System normalised Regards, Delhi SLDC
202204091702432022-04-09 17:02:441) Name of the substation and Time: PPK-2 2) Name of element tripped/restored: 220KV Bamnauli ckt-I charged at 16:56Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204091352252022-04-09 13:52:261) Name of the substation and Time: PPK-2 2) Name of element tripped/restored: 220KV Bamnauli ckt-I tripped on YB-phase Z-1 differential at 13:22Hrs. Relay at Bamnauli end are YB-phase Z-1 5.09km fault current 12KA. Load affected was 100MW. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: Load normalised through 220KV B/C at 13:25Hrs. 6) Any other relevant information: na Regards, Delhi SLDC
202204082302562022-04-08 23:02:57SCADA Data for the Following Sub-Stations/lines/elements are suspect or not available: 1) Data of 220 Kv Peeragarhi and 220 KV Wazirpur is not updating. 2) na 3) na 4) na 5) na 6) na Regards, Delhi SLDC
202204081840282022-04-08 18:40:291) Name of the substation and Time: at 220 KV Narela 2) Name of element tripped/restored: 220 KV Narela madola ckt-II charged at 17:56 hrs and ckt-I charged at 18:34 hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204081458432022-04-08 14:58:441) Name of the substation and Time: Sarita Vihar 2) Name of element tripped/restored: 220KV BTPS ckt-I charged at 10:58Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204081408232022-04-08 14:08:231) Name of the substation and Time: Narela 2) Name of element tripped/restored: At 13:20Hrs 220KV Mandaula ckt-II tripped on C-phase 21.16km. At 13:40Hrs supply of 220KV Mandaula ckt-I failed. Load affected was 86MW. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: Load normalised through 220KV Narela-DSIDC ckt-I and II at 13:47Hrs. 6) Any other relevant information: na Regards, Delhi SLDC
202204080654042022-04-08 06:54:051) Name of the substation and Time: At 05:38 HRS ,220KV Saritavihar 2) Name of element tripped/restored: 220KV BTPS ckt-I only at SVR end. 3) Relay Annunciation: Zone-I,trip phase Bn.F/L 120KM, Y and B phasse trip 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 06:47 HRS tried to close at SVR end but didnot hold. 6) Any other relevant information: - Regards, Delhi SLDC
202204071655162022-04-07 16:55:171) Name of the substation and Time: 220 KV NZF 2) Name of element tripped/restored: 220 NZF-BMLY ckt-I charged at 16:52 hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204071647092022-04-07 16:47:101) Name of the substation and Time: 220 KV Narela 2) Name of element tripped/restored: 220 KV Narela-MDL ckt-II charged at 16:26 hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204071559512022-04-07 15:59:521) Name of the substation and Time: At 220 KV NZF 2) Name of element tripped/restored: 220 KV BMLY-NZF Ckt-II charged at 15:17 hrs 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204071454312022-04-07 14:54:321) Name of the substation and Time: 220KV NZF at 14:17 hrs 2) Name of element tripped/restored: 220 kv BMLY-NZF CKT- II TRIPPED ON DISTANCE PROT.ZONE-I 2.64 KM B PHASE FROM BMLY END.CKT CB REMAIN CLOSED FROM NZF. 220 KV BMLY-NZF CKT-I TRIPPED FROM NZF ON 86.CKT RAMAIN CHARGED FROM BAMLY END. 3) Relay Annunciation: DISTANCE 4) Details of physically damaged equipment: NONE REPORTED 5) Immediate corrective/system normalization steps performed: AT 14:30 HRS LOAD SHIFTED ON MUNDKA AND KANJHAWALA CKT. 6) Any other relevant information: PARTIALLY LOAD SHIFTED BY BSES.46 MW LOAD REMAIN AFFECTED FROM 14:17 HRS TO 14:30 HRS Regards, Delhi SLDC
202204071340552022-04-07 13:40:561) Name of the substation and Time: 220 KV Narela at 13:11 hrs 2) Name of element tripped/restored: 220 KV Mandola ckt-II tripped on distance prot. zone-I 7.70 km zone-I 3) Relay Annunciation: distance 4) Details of physically damaged equipment: none reported 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: No load affected. Regards, Delhi SLDC
202204061613052022-04-06 16:13:061) Name of the substation and Time: At 220 KV Narela at 15:19 hrs. 2) Name of element tripped/restored: 220 KV Mandola ckt-II charged at 15:15 hrs.but ckt again tripped on distance prot. B phase,6.2 km. 3) Relay Annunciation: distance prot 4) Details of physically damaged equipment: None reported 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: No load affected Regards, Delhi SLDC
202204051406582022-04-05 14:06:591) Name of the substation and Time: At 13:23 hrs. 220 KV Narela 2) Name of element tripped/restored: 220KV Mandola ckt-2 3) Relay Annunciation: Dist. Prot,Zone-1 Dist 4.5 KM 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: NO load affected 6) Any other relevant information: CVT: NA Regards, Delhi SLDC
202204051358512022-04-05 13:58:511) Name of the substation and Time: 220 kv narela, @ 13:23 hrs 2) Name of element tripped/restored: 220 kv mandola ckt2 3) Relay Annunciation: Zone 1, 4.5 km, I(C) = 4 kA 4) Details of physically damaged equipment: none reported 5) Immediate corrective/system normalization steps performed: no load affected 6) Any other relevant information: CVT : NA Regards, Delhi SLDC
202204041630472022-04-04 16:30:481) Name of the substation and Time: At 15:00 hrs. 220KV Meharauli 2) Name of element tripped/restored: 66 KV I/Cs 1,2 and 3 3) Relay Annunciation: o/c b-phase 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: after fault analysis all kV 66 I/Cs made normal 6) Any other relevant information: 82 MW load affected for 10 Min. Regards, Delhi SLDC
202204041622022022-04-04 16:22:031) Name of the substation and Time: At 14:50 hrs. 220KV Meharauli 2) Name of element tripped/restored: 66 kv I/C-1,2 AND 3 3) Relay Annunciation: O/C B-PHASE 4) Details of physically damaged equipment: None 5) Immediate corrective/system normalization steps performed: AT 15:00 hrs all I/Cs made on after fault analysis 6) Any other relevant information: none Regards, Delhi SLDC
202204021751552022-04-02 17:51:561) Name of the substation and Time: Bamnauli` 2) Name of element tripped/restored: 400KV Tughlakabad ckt-II charged at 17:48Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204021506212022-04-02 15:06:231) Name of the substation and Time: 400kV Harsh Vihar at 14:27 2) Name of element tripped/restored: 400kV Dadri ckt 2 3) Relay Annunciation: z-1, 41.3km, Y ph. E/F 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Line being Patrolled by NTPC Regards, Delhi SLDC
202204011525392022-04-01 15:25:401) Name of the substation and Time: Bamnauli 14:12Hrs. 2) Name of element tripped/restored: 500MVA ICT-3 charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204011522472022-04-01 15:22:481) Name of the substation and Time: 220KV IP 12:37Hrs 2) Name of element tripped/restored: corrigendum At 12:37Hrs 220KV Patparganj ckt I and II tripped on distance relay Z-4 RYB-phase further due to this there was loss of generation at Pragati and Pragati-Pragati Street ckt-II tripped on distance relay line differential Z-1 B-phase. Grid staff of IP grid has reported thread on 220KV Bus I and II. Total load affected during this was approx 280MW of IP, Rajghat and Partstreet(only 66KV load) At 12:45Hrs 220KV B/C at Pragati closed and load of Park Street normalised. At 12:55Hrs 220KV Patparganj-IP ckt-I charged but tripped on DPR Z-4 RYB-phase. At 13:18Hrs 220KV Patparganj-IP ckt-II charged and load of IP normalised. At 13:37Hrs 220KV IP-Rajghat ckt I and II charged and load of Rajghat normalised. At 13:42Hrs 220KV Patparganj-IP ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204011511272022-04-01 15:11:271) Name of the substation and Time: 220KV IP 2) Name of element tripped/restored: At 12:37Hrs 220KV Patparganj ckt I and II tripped on distance relay Z-4 RYB-phase further due to this there was loss of generation at Pragati and Pragati-Pragati Street ckt-II tripped on distance relay line differential Z-1 B-phase. Grid staff of IP grid has reported thread on 220KV Bus I and II. Total load affected during this was approx 280MW (IP, Rajghat, Partstreet and GT) At 12:45Hrs 220KV B/C at Pragati closed and load of GT and Park Street normalised. At 12:55Hrs 220KV Patparganj-IP ckt-I charged but tripped on DPR Z-4 RYB-phase. At 13:18Hrs 220KV Patparganj-IP ckt-II charged and load of IP normalised. At 13:37Hrs 220KV IP-Rajghat ckt I and II charged and load of Rajghat normalised. At 13:42Hrs 220KV Patparganj-IP ckt-I charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202204010808092022-04-01 08:08:101) Name of the substation and Time: 400kV Bamnauli 18:41Hrs 31.03.2022, Radiator leakage Radiator leakage reported at 07.58 Hrs on 01.04.2022 2) Name of element tripped/restored: 500MVA ICT-III 3) Relay Annunciation: Tripped on O/C 86 A and B 4) Details of physically damaged equipment: Radiator leakage 5) Immediate corrective/system normalization steps performed: PTW issued 6) Any other relevant information: NIL Regards, Delhi SLDC
202203312308362022-03-31 23:08:371) Name of the substation and Time: 400 KV Bamnauli at 22:53 hrs. 2) Name of element tripped/restored: 400 KV Bus-II charged. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202203312028222022-03-31 20:28:231) Name of the substation and Time: 220 KV NJF 2) Name of element tripped/restored: 220 KV Bamnauli ckt-I charged at 19:30 hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202203311956002022-03-31 19:56:011) Name of the substation and Time: 400 Kv Bamnauli at 18:41 hrs 2) Name of element tripped/restored: 400 KV Tugalkabad ckt-II tripped on distance prot. zone -I 228 mtr.and 500 MVA ICT-III tripped on o/c.bus bar opearted on 400 kv BUS-II. 3) Relay Annunciation: bus bar operated 4) Details of physically damaged equipment: R phase CT fired of BUS-II of Tugalkabad ckt-II and ICT-III 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: No load affected. Regards, Delhi SLDC
202203311858102022-03-31 18:58:121) Name of the substation and Time: Najafgarh at 18:44Hrs 2) Name of element tripped/restored: 220kV Najafgarh- BML ckt1, Load transferred to 220kV Mundka at 18:45 HRs, Load affected 62 MW for 1 Min 3) Relay Annunciation: 86, E/f 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Substation staff informed to Check the ckt 6) Any other relevant information: Nil Regards, Delhi SLDC
202203301204392022-03-30 12:04:401) Name of the substation and Time: 220kV Geeta Colony 11:39HRs 2) Name of element tripped/restored: Geeta colony Wazirabad Ckt 2 3) Relay Annunciation: Distance prot Zone-1, B-Phase, 86, SOTF 4) Details of physically damaged equipment: Conductor Snap reported 5) Immediate corrective/system normalization steps performed: Substation staff informed for needful 6) Any other relevant information: NIL Regards, Delhi SLDC
202203301055182022-03-30 10:55:191) Name of the substation and Time: 220 KLV OKHLA 2) Name of element tripped/restored: 33KV INCOMMER MADE OFF MANNUALLY BY GRID STAFF, I/C 3 ALREADY UNDER BREAKDOWN 3) Relay Annunciation: NA 4) Details of physically damaged equipment: ISOLATOR MELT 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202203291632332022-03-29 16:32:351) Name of the substation and Time: 220kV TKD- Okhla ckt2 at 15:52HRs 2) Name of element tripped/restored: 220kV TKD- Okhla ckt2 3) Relay Annunciation: Nil 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Nil 6) Any other relevant information: Nil Regards, Delhi SLDC
202203291629042022-03-29 16:29:051) Name of the substation and Time: 220kV Narela 16:08HRs 2) Name of element tripped/restored: 220kV Narela- MAndaula ckt 1 and 2 tripped at 186A and B, Load normalise through bus 220kV coupler at 16:16HRs, 25MW Load affected for 8Min 3) Relay Annunciation: 186 A and B 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Informed to S/stn staff to check the line 6) Any other relevant information: Nil Regards, Delhi SLDC
202203291445452022-03-29 14:45:471) Name of the substation and Time: Corrigendum : 220kV Tukalkabad 14:03HRs 2) Name of element tripped/restored: 220kV TKD-Mehrauli ckt-1 tripped, 60 MW load affected for 16 Min at 220kV Vasant Kunj. Load restored at 220kV Vasant kunj end through bus coupler 3) Relay Annunciation: 220kV TKD end: Zone-III, Zone-II, R-Ph, 11.1KM 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to concerned S/stn staff to check the ckt 6) Any other relevant information: Nil Regards, Delhi SLDC
202203291437212022-03-29 14:37:221) Name of the substation and Time: 220kV Tukalkabad 14:03HRs 2) Name of element tripped/restored: 220kV TKD-Mehrauli ckt-1 tripped, 7 MW load affected for 16 Min at 220kV Vasant Kunj. Load restored at 220kV Vasant kunj end through bus coupler 3) Relay Annunciation: 220kV TKD end: Zone-III, Zone-II, R-Ph, 11.1KM 4) Details of physically damaged equipment: Nil 5) Immediate corrective/system normalization steps performed: Informed to concerned S/stn staff to check the ckt 6) Any other relevant information: NIl Regards, Delhi SLDC
202203291358172022-03-29 13:58:181) Name of the substation and Time: 220kV Okhla 13:10PM 2) Name of element tripped/restored: 220kV Okhla-TKD ckt2 3) Relay Annunciation: Distance Protection, Zone-1, Zone-2, ZOne-3, 86T, Fault currect 18.751KA, Distance 2.06KM 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: S/stn staff informed to check the ckt 6) Any other relevant information: NIL Regards, Delhi SLDC
202203291355022022-03-29 13:55:031) Name of the substation and Time: 400KV BAWANA, 13:25PM 2) Name of element tripped/restored: 400kV Bawana- Maharanibagh ckt-1 charged (LILO of 400kV Bawana- Mandaula ckt-1) 3) Relay Annunciation: NIL 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: NIL 6) Any other relevant information: NIL Regards, Delhi SLDC
202203291233252022-03-29 12:33:261) Name of the substation and Time: 400KV BAWANA, 11:51AM 2) Name of element tripped/restored: 400 kv Bawana-Maharanibagh ckt-2 (LILO of 400KV Bawana-mandola ckt-2) charged 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202203281959572022-03-28 19:59:591) Name of the substation and Time: Patparganj 2) Name of element tripped/restored: 220KV Geeta colony ckt-II charged at 18:52hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202203281819122022-03-28 18:19:141) Name of the substation and Time: Patparganj 18:05Hrs 2) Name of element tripped/restored: 220KV Geeta colony ckt-II 3) Relay Annunciation: Relay at Patparganj end are distance relay Z-1 R-phase 0.7km. Relay at Geeta colony end are o/c earth fault Z-1 3.4km R-phase. No load was affected 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202203281746342022-03-28 17:46:351) Name of the substation and Time: AT 15:27hrs, Pappankalan-II 2) Name of element tripped/restored: 220KV Bamnoli-II 3) Relay Annunciation: RYB phase ,Z-I 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Restoration. 6) Any other relevant information: CKT normalized. Regards, Delhi SLDC
202203281746252022-03-28 17:46:271) Name of the substation and Time: At 13:45hrs, Pappankalan-II 2) Name of element tripped/restored: 220KV Bamnoli-II 3) Relay Annunciation: RYB phase , 86T, -173.5KM 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: BRPL asked to immediately C/O load on other 220KV substations. 6) Any other relevant information: AT 14:09hrs, Bamnoli-PPK-II ckt-II was made available and supply of 220KV PPK-II restored. Regards, Delhi SLDC
202203281737492022-03-28 17:37:501) Name of the substation and Time: At 12:55 hrs.220kv PPK-2 2) Name of element tripped/restored: 220 KV BAMNAULI-1 tripped 3) Relay Annunciation: dist.prot zone-1 B- PHASE 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 220 KV B/C Put on 6) Any other relevant information: load normalized at 12:59 hrs. Regards, Delhi SLDC
202203281717372022-03-28 17:17:401) Name of the substation and Time: At 1550 hrs. 220 kv okhala 2) Name of element tripped/restored: 33 KV I/C-3 3) Relay Annunciation: R-Y-B PHASE TRIP,86 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: BRPL asked to changeover their load 6) Any other relevant information: 33 kv nehru place-4 tripped simultaneously Regards, Delhi SLDC
202203281709302022-03-28 17:09:341) Name of the substation and Time: At 15:50 hrs.220 kv okhala 2) Name of element tripped/restored: 33 kv I/C-5 3) Relay Annunciation: E/F 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: BRPL asked to change over their load 6) Any other relevant information: 33 kv nehru place-4 also tripped simultaneously and CB blast reported at BRPL end Regards, Delhi SLDC
202203181950482022-03-18 19:50:501) Name of the substation and Time: 400kv Bamnauli 2) Name of element tripped/restored: 220kv DIAL-1 and DIAL-2. 3) Relay Annunciation: earth fault,R-PH ,186,fault current 3.374 KA. 4) Details of physically damaged equipment: n/a 5) Immediate corrective/system normalization steps performed: adviced to discom for shifting load. 6) Any other relevant information: Also tripped 220 kv Tuglakabad -mehrauli-2,jone-2 operated ,R-phase ,9.80 km,fault current 14.4 KA. Regards, Delhi SLDC
202203151642272022-03-15 16:42:281) Name of the substation and Time: Okhla 2) Name of element tripped/restored: 220KV BTPS ckt-I charged at 16:33Hrs and 160MVA T/F-1 charged at 16:38Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202203151640112022-03-15 16:40:121) Name of the substation and Time: Dial 2) Name of element tripped/restored: 220KV Bamnauli ckt-I charged at 16:23Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202203151633202022-03-15 16:33:211) Name of the substation and Time: Dial 2) Name of element tripped/restored: 220KV Bamnauli ckt-I charged at 16:23Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202203151306102022-03-15 13:06:111) Name of the substation and Time: Dial 12:09Hrs. 2) Name of element tripped/restored: 220KV Bamnauli ckt-I 3) Relay Annunciation: Relay at Dial end R-phase Z-2 Relay at Bamnauli end Z-1 R-phase 1.9km. No load was affected 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202203151300402022-03-15 13:00:411) Name of the substation and Time: Okhla 11:50Hrs. 2) Name of element tripped/restored: BTPS ckt-I and 160MVA T/F-1 3) Relay Annunciation: 220KV BTPS ckt-I tripped on distance relay Y-phase Z-1. 160MVA T/F-1 tripped on 86. 220KV BTPS ckt-II was under shutdown. Load affected was 53MW. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Load normalised through 220KV B/C at 11:55Hrs. 6) Any other relevant information: NA Regards, Delhi SLDC
202203151300332022-03-15 13:00:341) Name of the substation and Time: Okhla 11:50Hrs. 2) Name of element tripped/restored: BTPS ckt-I and 160MVA T/F-1 3) Relay Annunciation: 220KV BTPS ckt-I tripped on distance relay Y-phase Z-1. 160MVA T/F-1 tripped on 86. 220KV BTPS ckt-II was under shutdown. Load affected was 53MW. 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: Load normalised through 220KV B/C at 11:55Hrs. 6) Any other relevant information: NA Regards, Delhi SLDC
202203142108492022-03-14 21:08:501) Name of the substation and Time: 220kV Najafgarh at 19:12Hrs 2) Name of element tripped/restored: 66kV I/c-4 , I/C-2, 66kV DJB ckt 2. 64MW load effected 3) Relay Annunciation: 66kV I/c-4 on E/F, I/C-2 w/o indication, 66kV DJB ckt 2 on z-1, z-2, R and B Ph.,86. 4) Details of physically damaged equipment: 66kV B/C tried at 19:38 but tripped along with I/C 1 and 3. 66kV Budhela-2 ckt 2 on O/C, R Ph., 86. Also, YPh CB pole of 66kV DJB ckt 2 bursted. Remaining 56MW load effected. 5) Immediate corrective/system normalization steps performed: All out going feeders put off, all I/Cs closedand Load normalised one by one by 19:47 hrs 6) Any other relevant information: 66kV DJB ckt 2 and its CB under B/D Regards, Delhi SLDC
202203021044322022-03-02 10:44:331) Name of the substation and Time: 08:44HRS,220KV SGTN 2) Name of element tripped/restored: 160MVA-I 3) Relay Annunciation: Differial protection 4) Details of physically damaged equipment: Y and B Phase CT of local tranformer damaged 5) Immediate corrective/system normalization steps performed: 09:02 HRS 66KV Bus coupler closed and load normalised 6) Any other relevant information: Approx 45MW load affected Regards, Delhi SLDC
202202261915022022-02-26 19:15:041) Name of the substation and Time: 220kV Patparganj at 19:09 2) Name of element tripped/restored: 220kV Geeta Colony ckt 1 energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: clearance from Patrolling team. Regards, Delhi SLDC
202202261829552022-02-26 18:29:561) Name of the substation and Time: Patparganj 18:08hrs 2) Name of element tripped/restored: 220kV Geeta Colony ckt 1 3) Relay Annunciation: At PPG: BY ph Distance protection 1.07km from PPG end.Ib= 18.23kA, Ic=18.29kA At G Colony, BY Ph. distance 3.3km Ib=9.8kA, Ic=9.9kA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202202221606432022-02-22 16:06:441) Name of the substation and Time: 220kV Pragati-Sarita Vihar charged at 16:03 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202202221531072022-02-22 15:31:081) Name of the substation and Time: 220kV Pragati 15:05 2) Name of element tripped/restored: 220kV Sarita Vihar ckt 3) Relay Annunciation: At Pragati - CN Ph, z-1, 1.55km IA= 1.7kA, Ib=1.8kA, Ic= 20.7kA, In= 24.4kA At Sarita Vihar - CN Ph, z-2, 14.65km IA= 1.7kA, Ib=1.8kA, Ic= 9.1kA, In= 5.5kA 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 220kV IP- Patparganj 1 and 2 closed 6) Any other relevant information: No load effected Regards, Delhi SLDC
202202112004402022-02-11 20:04:441) Name of the substation and Time: 220 KV PPK-I at 19:27 hrs 2) Name of element tripped/restored: 220 KV PPK-I -BMNLY ckt- I and II charged at 19:27 hrs.ckt under B/D since 06.02.22 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202202080914422022-02-08 09:14:421) Name of the substation and Time: At 400kV Dwarka (PGCIL) 00:19 Hrs 2) Name of element tripped/restored: 500 MVA ICT-1 energized and 220kV Load taken 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 220kV Dwarka (DTL) Buses energized through this ICT. Regards, Delhi SLDC
202202080910032022-02-08 09:10:041) Name of the substation and Time: At 400kV Bamnauli at 22:51 Hrs dt 07.02.22 2) Name of element tripped/restored: 400kV bamnauli - Dwarka ckt 1 energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202202080033052022-02-08 00:33:061) Name of the substation and Time: At 400kV Bamnauli and Dwarka 22:51 Hrs 2) Name of element tripped/restored: 400kV bamnauli - Dwarka ckt 1 energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: at 00:19 hrs, 500MVA ICT-1 energized at 400kV Dwarka. Load taken. Regards, Delhi SLDC
202202061338502022-02-06 13:38:511) Name of the substation and Time: At 220kV PPK-1 on 10:58 hrs 2) Name of element tripped/restored: at 220kVPPK-1 220kV Bamnoli ckt 1 tripped on Z-1, C PH. CVT available. ckt tried but tripped on z-1, C Ph, E/F at 11:04 hrs. 220kV Bamnoli ckt 2 tripped on z-1, A and B Ph, z-1. 3km at bamnoli end only. 3) Relay Annunciation: - 4) Details of physically damaged equipment: coductor snap reported on both ckts 5) Immediate corrective/system normalization steps performed: 210MW effected partially restored by discom and DTL All load normalized by 13:01 hrs after revival of 220kV Bamnoli-PPK-3 ckt 1 and 2 6) Any other relevant information: - Regards, Delhi SLDC
202202061147092022-02-06 11:47:111) Name of the substation and Time: Preliminary information both coundcter senap on both ckt- Bamnauli P.P.K-I ckt-I and II reported at 11:00 Hrs 2) Name of element tripped/restored: - 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: DMRC supply restored through Naraina Ridge route 6) Any other relevant information: - Regards, Delhi SLDC
202202041339482022-02-04 13:39:491) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: 66KV I/C-IV charged at 13:35Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202202041202152022-02-04 12:02:151) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: 66KV I/C-IV made off by grid staff at 09:55 Hrs due to sparking. Load affected was approx. 55MW of 66KV C-Dot ckt I and II and 66KV DMRC ckt I and II. 3) Relay Annunciation: na 4) Details of physically damaged equipment: 66KV I/C-IV B-phase Bus-I isolator jaw damaged. 5) Immediate corrective/system normalization steps performed: 66KV C-Dot ckt I and II normalised at 11:08Hrs on 66KV Bus-II after backcharging 66KV D-I and II and 66KV DMRC ckt I and II charged at 11:15Hrs. 6) Any other relevant information: Presently 66KV I/C-IV is under shutdown alongwith 66KV Bus-I Regards, Delhi SLDC
202202041202132022-02-04 12:02:141) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: 66KV I/C-IV made off by grid staff at 09:55 Hrs due to sparking. Load affected was approx. 55MW of 66KV C-Dot ckt I and II and 66KV DMRC ckt I and II. 3) Relay Annunciation: na 4) Details of physically damaged equipment: 66KV I/C-IV B-phase Bus-I isolator jaw damaged. 5) Immediate corrective/system normalization steps performed: 66KV C-Dot ckt I and II normalised at 11:08Hrs on 66KV Bus-II after backcharging 66KV D-I and II and 66KV DMRC ckt I and II charged at 11:15Hrs. 6) Any other relevant information: Presently 66KV I/C-IV is under shutdown alongwith 66KV Bus-I Regards, Delhi SLDC
202202031614502022-02-03 16:14:511) Name of the substation and Time: PPK-1 2) Name of element tripped/restored: 220KV Bamnauli ckt-I charged at 16:09Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202202030916532022-02-03 09:16:551) Name of the substation and Time: Pappankala 1 at 07:41Hrs 2) Name of element tripped/restored: 220kV Bamnauli ckt 1 tripped and SPS operated on 66kV Harinagar and Bindapur 1 3) Relay Annunciation: Distance protection YB phase 4) Details of physically damaged equipment: nest and debris observed at PPK-1 end on B Phase line isolator gantry 5) Immediate corrective/system normalization steps performed: load of Naraina taken on Ridge Valley ckt to create margin and load normalized by 08:12 hrs 6) Any other relevant information: Around 50 MW load effected. Regards, Delhi SLDC
202201291439432022-01-29 14:39:441) Name of the substation and Time: 13:17 HRS 220KV R.K.PURAM 2) Name of element tripped/restored: 220KV CB of 220KV Trauma centre -I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 220KV Circuit breaker cheked by maintenance staff of R.K.Puram and problem solved 6) Any other relevant information: 220KV trauma centre -I charged Regards, Delhi SLDC
202201291032222022-01-29 10:32:231) Name of the substation and Time: 09:50 HRS 220KV R.K.PURAM 2) Name of element tripped/restored: Tried to close 220KV CB of Trauma centre-No-! but could not be closed 3) Relay Annunciation: nforced tripple Pole Trip and Pole Discrepancy 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Load of 220KV Ridge vally and 220KV Naraina could not taken on 220KV R.K.Puram due to 220KV CB Problem at R.K.Puram substation Regards, Delhi SLDC
202201281955182022-01-28 19:55:191) Name of the substation and Time: Gazipur 2) Name of element tripped/restored: 220KV Maharani Bagh ckt-II charged at 17:58Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202201281721412022-01-28 17:21:421) Name of the substation and Time: 220kV Gazipur at 16:46 hrs 2) Name of element tripped/restored: 220kV Maharanibagh ckt 2 3) Relay Annunciation: distance protection 7.89km from GZP and 3.8 from MBg 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: No load effected as B/C was already on. Regards, Delhi SLDC
202201281518122022-01-28 15:18:131) Name of the substation and Time: Maharanibhagh ,14:50hrs 2) Name of element tripped/restored: 220 KV C.B. of Masjid moth 3) Relay Annunciation: bkr. lock out 4) Details of physically damaged equipment: gasket damaged 5) Immediate corrective/system normalization steps performed: -- 6) Any other relevant information: CB lockedout at 20:50hrs dt 27.01.2022 Regards, Delhi SLDC
202201271702512022-01-27 17:02:521) Name of the substation and Time: Park Street 2) Name of element tripped/restored: 100MVA 220/33KV T/F-1 charged at 16:56Hrs on single cable of 33KV side B-phase. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202201271004002022-01-27 10:04:011) Name of the substation and Time: Park Street 2) Name of element tripped/restored: 100MVA 220/33KV T/F tripped on differential RYB-phase LV REF at 09:21 Hrs. Grid staff has reported B-phase 33KV I/C side cable punctured. Load affected was 25MW. Load normalised through 33KV B/C at 09:36Hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202201230736282022-01-23 07:36:291) Name of the substation and Time: 03:10 HRS 220KV parkstreet 2) Name of element tripped/restored: 33KV I/C No-II(220/33KV) Energized 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: All33KV feeders of 33KV Bus-II shifted on 33KV Bus-I at 02:52 hrs Regards, Delhi SLDC
202201230229042022-01-23 02:29:051) Name of the substation and Time: 01:20 HRS 220KV Park street 2) Name of element tripped/restored: 33KV I/C No-II(220/33KV) 3) Relay Annunciation: Anytrip O/C ST-I,O/C-Y phase 86 operated and CB open 4) Details of physically damaged equipment: 33KV LA Jumper damage of R and Y phase of 33KV baird road -I 5) Immediate corrective/system normalization steps performed: 01:40 HRS 33KV Buscoupler tried to close but did not hold and same time 33KV I/C No-I tripped .after 1 minute 33KV I/C-I tried to close held OK 6) Any other relevant information: Approx 16 MW load affected. Regards, Delhi SLDC
202201222244042022-01-22 22:44:051) Name of the substation and Time: 21:36 HRS 220KV LODHI ROAD 2) Name of element tripped/restored: 33KV I/C-II 3) Relay Annunciation: SF6 Gas pressure low lock out on 33KV Bus-II 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 22:36 HRS 33K NDSE,33KC CBI,33KV Nizamuudin feeders shifted on 33KV BUS-I Eccept 16MVA-3 due Bus isolator problem 6) Any other relevant information: approx 21MW load affected Regards, Delhi SLDC
202201211245382022-01-21 12:45:381) Name of the substation and Time: 220kV Gopalpur at 10:50 2) Name of element tripped/restored: 160 MVA Tx-4 and 66kV I/C 4 3) Relay Annunciation: Tx tripped on REF, Differential and I/C intertripped 4) Details of physically damaged equipment: R and B Ph. line isolators of 66kV I/c 4 5) Immediate corrective/system normalization steps performed: Load shifted by Discom 6) Any other relevant information: 100MV load effected on tripping. Regards, Delhi SLDC
202201211239252022-01-21 12:39:261) Name of the substation and Time: 10:45 at 220kV Narela. 2) Name of element tripped/restored: 66kV I/C 1, 2 and 3 and 20MVA Tx-1 3) Relay Annunciation: 66kV I/C 1, 2 and 3 tripped on E/F. 20MVA Tx-1 tripped on REF LV side. 4) Details of physically damaged equipment: Earth strip of R ph. CVT of 66kV Bus 1 5) Immediate corrective/system normalization steps performed: System normalised after isolating said CVT at 11:20 Hrs 6) Any other relevant information: peacock electrocuted. approx 85 MW load effected on instance. system restored at 11:25 Regards, Delhi SLDC
202201210748502022-01-21 07:48:511) Name of the substation and Time: 220 kV IP 03:37hrs 2) Name of element tripped/restored: 220 kV IP - Patparganj ckt-I 3) Relay Annunciation: Distance protection Zone-1 B phase 3.987 kms 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: No load affected. Load taken by Ckt-II 6) Any other relevant information: NA Regards, Delhi SLDC
202201171820322022-01-17 18:20:331) Name of the substation and Time: 17:24hrs,220 kv Maharanibagh 2) Name of element tripped/restored: 220 KV Trauma center ckt-1 and 2 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 220 KV Trauma center ckt-1 and 2 charge at NO load for 24 hrs 6) Any other relevant information: - Regards, Delhi SLDC
202201100904222022-01-10 09:04:231) Name of the substation and Time: 220kV RK Puram, 03:13 2) Name of element tripped/restored: 160 MVA Tx-2 at 03:13, 100MVA Tx-1 at 03:25, 100MVA Tx-2 at 03:31 3) Relay Annunciation: over Voltage 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: 220kV Vasantkunj ckt-1 energized at 03:38, 160 MVA Tx- 2 and 100 MVA Tx-1 energized at 03:50, 100MVA Tx-2 energized at 04:05 and 160 MVA- 1 energized at 07:49. 6) Any other relevant information: 21 MW load was effected but shifted by BRPL and DMRC. Regards, Delhi SLDC
202201080709102022-01-08 07:09:101) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At 04:20 hrs 220 kV Naraina Ridge Valley ckt charged load normalized at Ridge Valley. At 04:25 hrs 220 kV Ridge Valley R K Puram ckt 1 and 2 charged and load normalized at R K Puram and Trauma Centre. At around 04:30 hrs at 220 kV Vasant Kunj, 220 kV R K Puram ckt 1 and 2 tried to charge but could not be closed due to over voltage. At 05:47 hrs, Vasant Kunj R K Puram ckt 2 charged and load normalized at Vasant Kunj end. Presently, 220 kV Mehrauli is still affected and fire is being controlled. The status will be updated after receiving further information. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202201080707382022-01-08 07:07:391) Name of the substation and Time: Mehrauli 2) Name of element tripped/restored: At around 02:20 hrs 20 MVA transformer no. 1 tripped on PRV at 220 kV Mehrauli. 20 MVA transformer no. 2 is already under shutdown. At around 3:40 hrs 220 kV Mehrauli has reported fire in 11 kV and requested to switched off all 220 kV feeders. At 3:43 hrs 220 kV R K Puram – Vasant Kunj ckt 1 and 2 made on from R K Puram end but at Vasant Kunj end both ckt could not hold on over voltage. At 3:45hrs 220 kV DIAL-Mehrauli ckt- 1 and 2 made off from DIAL end. At 03:46 hrs Tuglkabad Mehrauli ckt 1 and 2 tripped on zone 2 general trip A and B phase (13 Kms) from Tuglakabad end. At 03:46 hrs at 220 kV Vasant Kunj, 220 kV Mehrauli ckt 1 and 2 tripped on earth fault, 86 and air lockout relay along with 160 MVA transformer no.3 on overvoltage. At 03:46 hrs 220 kV Naraina Ridge Valley ckt tripped on 86 from Ridgevalley end. Total Load affected during tripping was approx 158 MW at Mehrauli, Vasant Kunj, Ridge Valley, R K Puram and Trauma Centre. 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: - Regards, Delhi SLDC
202201080506332022-01-08 05:06:341) Name of the substation and Time: Harsh Vihar 2) Name of element tripped/restored: 400KV Dadri ckt-II tripped on R-phase Z-1 22.7km. Load affected was 33MW at Preet Vihar. Load normalised through 220KV PPGJ-Preet Vihar ckt-I at 03:22Hrs. Regards, Delhi SLDC 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202201080133102022-01-08 01:33:111) Name of the substation and Time: Gopalpur 2) Name of element tripped/restored: Supply of 220kV Mandaula Ckt -I Failed at 01:11 Hrs. Load affected was approx 50MW. Load normalised through 220kV SOW ckt-II at 01:21 Hrs. Regards, Delhi SLDC 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: MA 6) Any other relevant information: NA Regards, Delhi SLDC
202201080124202022-01-08 01:24:211) Name of the substation and Time: Najafgarh 2) Name of element tripped/restored: At 00:50 Hrs, 66kV I/C-II tripped on O/C. 66kV I/c-IV tripped without indication. Load affected was 33MW. Load Normalised after charging 66KV I/C-IV at 01:05 Hrs and 66kV I/c-II at 01:15 Hrs 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202201070035202022-01-07 00:35:211) Name of the substation and Time: 00:05 HRS 220KV Subzimandi 2) Name of element tripped/restored: 220KV Gopalpur CKT-II 3) Relay Annunciation: without relay,alarm and indication 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: 00:10 HRS 33KV Buscoupler closed 6) Any other relevant information: Load affected approx 11MW Regards, Delhi SLDC
202201052307212022-01-05 23:07:221) Name of the substation and Time: 400 KV Harsh Vihar at 22:50 hrs 2) Name of element tripped/restored: 400 KV dadri ckt-I tripped on over voltage.ckt-II already under B/D . 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: load backfeed from PPg-PVR Regards, Delhi SLDC
202201051058082022-01-05 10:58:091) Name of the substation and Time: Gopalur at 10:13 2) Name of element tripped/restored: Mandola 1 tripped. Supply failed on Mandola 2. 3) Relay Annunciation: Yph, z-1, 1.5km. 4) Details of physically damaged equipment: none reported 5) Immediate corrective/system normalization steps performed: Gopalpur-Wazirabad 1 and 2 closed at 10:20 and Mandola 2 put off manually. 6) Any other relevant information: Load effected: approx 130 MW of Gopalpur and Sabzi Mandi. Regards, Delhi SLDC
202201041328032022-01-04 13:28:051) Name of the substation and Time: 400kV Mundka at 12:13 hrs. 2) Name of element tripped/restored: Jhatikara Ckt-2 at Mundka end only. 3) Relay Annunciation: Z-1, R-phase E/F 4) Details of physically damaged equipment: Female arm of line isolator got damaged. 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: BPI and female arm of the isolator is being attended. Also, due to jerk, STG of CCGT Bawana tripped resulting generation loss of approx. 100MW. However, no shortage of power. Regards, Delhi SLDC
202201011331082022-01-01 13:31:091) Name of the substation and Time: 220 kv Mehrauli 2) Name of element tripped/restored: at 13:00 hrs AC/DC supply restored by protection staff.all station normalized at 13:00 hrs. 3) Relay Annunciation: na 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: na 6) Any other relevant information: na Regards, Delhi SLDC
202201011305402022-01-01 13:05:411) Name of the substation and Time: 22O KV Mehrouli 12.32 2) Name of element tripped/restored: DC Supply fail at station.various elements triped and theire status is not conformed by operation staff,msg conveyed to BSES for shifting the load 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202111081637022021/11/08 16:37:051) Name of the substation and Time: test 2) Name of element tripped/restored: test 3) Relay Annunciation: test 4) Details of physically damaged equipment: test 5) Immediate corrective/system normalization steps performed: test 6) Any other relevant information: Please IGNORE Regards, Delhi SLDC
202103081513282021/03/08 15:13:40hi please ignore again
202103081509142021/03/08 15:09:43Please ignore
202103081506242021/03/08 15:07:23Please ignore
202103081428572021/03/08 14:43:10Please Ignore
202103081426322021/03/08 14:27:37please ignore.
202103081408202021/03/08 14:09:15Please ignore
202103081325002021/03/08 13:25:14HI testing
202112310811592021-12-31 08:12:001) Name of the substation and Time: Kanjhawala 2) Name of element tripped/restored: 160MVA T/F-3 tripped at 01:51Hrs. 3) Relay Annunciation: RYB differential LV and HV REF 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: No load was affected Regards, Delhi SLDC
202112271521232021-12-27 15:21:241) Name of the substation and Time: 15:10 HRS 220KV M.MOTH 2) Name of element tripped/restored: 100MVA-3 with 33KV I/C-3 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: 15:10 HRS 100MVA-3 with 33KV I/C-3 normalised Regards, Delhi SLDC
202112271505002021-12-27 15:05:001) Name of the substation and Time: 14:10 HRS 220KV M>Moth 2) Name of element tripped/restored: 100MVA-3 with 33KV I/C-3 3) Relay Annunciation: 86 1 and @ 4) Details of physically damaged equipment: 33KV CB assembly/breaker burnt 5) Immediate corrective/system normalization steps performed: 33KV I/C-II shifted on 33KV Bus-I at 14:30 HRS 6) Any other relevant information: Approx 43 MW load affected normalised at 14:30 HRS Regards, Delhi SLDC
202112271416172021-12-27 14:16:171) Name of the substation and Time: 220KV Gopalpur 2) Name of element tripped/restored: Mandola-I 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Circuit charged at 12:35 HRS at Gopalpur and charged/closed at 13:28 HRS at mandola Regards, Delhi SLDC
202112270150552021-12-27 01:50:561) Name of the substation and Time: At 220KV Wazirabad(23:52hrs) 2) Name of element tripped/restored: 220KV Mandola ckt-I and II. 3) Relay Annunciation: bus bar protection at Mandola station. 4) Details of physically damaged equipment: Y phase CB blast of Gopalpur ckt-II at Mandola. 5) Immediate corrective/system normalization steps performed: 220KV Preet Vihar-Harsh Vihar ckt-I and II put ON. 6) Any other relevant information: Load normalized. Regards, Delhi SLDC
202112262217082021-12-26 22:17:091) Name of the substation and Time: 400 KV MANDOLA AT 20:44 HRS 2) Name of element tripped/restored: ALL 500 MVA ICTS TRIPPED AT 400 KV MANDOLA END 3) Relay Annunciation: AWAITED 4) Details of physically damaged equipment: Y- PHASE CB BLAST AT MDL END OF 220 GOPALPUR CKT-2 AND BUS BAR OPERATED AT MANDOLA END 5) Immediate corrective/system normalization steps performed: LOAD NORMALIZE THROUGH 400 HVR AND 220 GZP 6) Any other relevant information: SOTF ON 220 KV PPG-G.COLONY CKT-2 Regards, Delhi SLDC
202112262202222021-12-26 22:02:231) Name of the substation and Time: MANDOLA 2) Name of element tripped/restored: ALL 500MVA ICTS 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NRLDC INFORM CB BLAST AT MANDOLA END 5) Immediate corrective/system normalization steps performed: VARIOUS OPERATIONS AT DIFFERNT GRIDS 6) Any other relevant information: SOTF AT PPG-G.COLONY CKT-2 Regards, Delhi SLDC
202112230844112021-12-23 08:44:121) Name of the substation and Time: Okhla 2) Name of element tripped/restored: At 07:38Hrs 220KV Bus Bar operated on Z-1 Z-2 resulted in tripping of following elements: 220KV TGBD ckt-I and II 220KV BTPS ckt-I and II 160MVA, 100MVA 220/66KV T/F1 and 2 100MVA 220/33KV T/F-3,4 and 5. Load affected was 105MW Discoms have partially shifted the load. AT 08::22Hrs 220KV TGBD cktI and II, 220KVBTPS ckt-II, T/F-1,2,3,4 and 5 charged. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202112221428112021-12-22 14:28:121) Name of the substation and Time: 13:30 hrs okhla 2) Name of element tripped/restored: Both 220 kv TBD Ckts 3) Relay Annunciation: bus bar prot.operated 4) Details of physically damaged equipment: na 5) Immediate corrective/system normalization steps performed: both ckts normalize at 14:10 6) Any other relevant information: all 33 kv load (approx. 50 )MW affected for few minutes Regards, Delhi SLDC
202112220917392021-12-22 09:17:411) Name of the substation and Time: 220KV PPK-I,07:35 2) Name of element tripped/restored: 220KV Bamnauli-II 3) Relay Annunciation: o/c B phase,86A,B Distance Protection 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: Load taken by closing 220KV Buscoupler at07:39HRS andDwarka-II 6) Any other relevant information: Load affected 70MW approx Regards, Delhi SLDC
202112201850002021-12-20 18:50:011) Name of the substation and Time: Harsh Vihar 2) Name of element tripped/restored: At 17:26Hrs due to failure of DC supply 66KV load gets affected (40MW) 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: At 17:34 Hrs Load normalised 6) Any other relevant information: NA Regards, Delhi SLDC
202112201412162021-12-20 14:12:171) Name of the substation and Time: Mehrauli, 13:50 Hrs 2) Name of element tripped/restored: 220kV Tughlakabad ckt 2 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Ckt energized after rectification of CB Regards, Delhi SLDC
202112191153562021-12-19 11:53:571) Name of the substation and Time: At 220kV Mehrauli 2) Name of element tripped/restored: 220kV TKD-MLI Ckt-2 is under B/D since yesterday i.e. 03:10 hrs of 18.12.2021. 3) Relay Annunciation: N/A 4) Details of physically damaged equipment: 220kV R-phase pole of CGL make CB is reported stuck. 5) Immediate corrective/system normalization steps performed: N/A 6) Any other relevant information: As mentioned above, 220kV TKD-MLI Ckt-2 is under B/D and 220kV M. Bagh-T.Centre Ckt-1 and 2 are under S/D. Hence, it will be difficult to maintain the load tomorrow, in case 220kV TKD-MLI Ckt-2 is not made available. Regards, Delhi SLDC
202112181255112021-12-18 12:55:121) Name of the substation and Time: NA 2) Name of element tripped/restored: 220 kV Mehrauli: At 9:30 hrs: 220 kV Tuglakabad 2 , Dail 2 and Vasant kunj 2 tripped on 186. 160 MVA transformer no. 4 tripped without indication (Load affected 38 MW). 66 kV C1 and C2, 66 kV Cdot 1 and 2 tripped on SPR (Load affected 68 MW). Total load affected was 106 MW. 9:37 hrs 220 kV Dial 2 and 160 MVA transformer no. 4 charged. 09:57 66 kV C1 and C2, 66 kV Cdot 1 and 2 charged. 220 kV Naraina: At 10:01 hrs: 220 kV bus coupler, 33 kV I/c no. 1, 33 kV bus coupler tripped on O/C 86. Load affected at 220 kV Naraina, Ridge valley, R K Puram and Trauma center is approximately 300 MW. At 10:07 hrs Load of 220 kV R K Puram normalized. At 10:21 hrs load of 220 kV Naraina , Ridgevalley and Trauma Center normalized. 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202112180916492021-12-18 09:16:501) Name of the substation and Time: -- 2) Name of element tripped/restored: following circuits tripped in night due to Fog: 1)220 KV SMB-Bawana ckt-I at 01:12 hrs,2)220 KV NZF-Bamnauli ckt-II at 01:53 hrs charged at hrs.08:48 hrs 3)220 KV goplapur-Mandola ckt-I at 02:20 hrs,4)220 KV sow-mandola ckt-I at 02:20 hrs.5)220 Mahrauli-Tugalkabad ckt-I at 03:10 hrs polymer burn,7)220 Kv sow-mandola ckt-III at 04:08 hrs charged at 07:28 hrs 3) Relay Annunciation: -- 4) Details of physically damaged equipment: -- 5) Immediate corrective/system normalization steps performed: --- 6) Any other relevant information: -- Regards, Delhi SLDC
202112180729422021-12-18 07:29:431) Name of the substation and Time: bawana at 04:43 hrs 2) Name of element tripped/restored: 315 MVa ICT-4 3) Relay Annunciation: buchholz relay 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: -- 6) Any other relevant information: No load affected Regards, Delhi SLDC
202112130835462021-12-13 08:35:481) Name of the substation and Time: 220 KV Naraina at 23:40 hrs on dt 12.12.2021 2) Name of element tripped/restored: 100 MVA Transformer No. 1 Tripped 3) Relay Annunciation: Differential relay operated; R and B phase, Relay 86, HVCB, LVCB 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: No load affected Regards, Delhi SLDC
202112121713122021-12-12 17:13:131) Name of the substation and Time: Najafgarh 16:22 hrs. 2) Name of element tripped/restored: 220kV Mundka Ckt tripped at NJF end only 3) Relay Annunciation: LBB 4) Details of physically damaged equipment: NIL 5) Immediate corrective/system normalization steps performed: Approx. 50MW affected load taken through 66kV Bus-Coupler at 16:28 hrs. Load normalized on 220kV Mundka Ckt at 16:40 hrs. 6) Any other relevant information: Refer earlier message, there is some 220kV DC problem since morning. Regards, Delhi SLDC
202112120901182021-12-12 09:01:191) Name of the substation and Time: Najafgarh 07:45AM 2) Name of element tripped/restored: Circuit breaker of Bamnauli ckt 1 3) Relay Annunciation: No Relay 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: The load was shifted by Discom except 15 MW. The load normalized throuh 66 kV bus coupler 6) Any other relevant information: The Dc supply and auxiliary supply failed at 05:40AM. 20 MVA transformer no. 2 was tripped on Buchholz relay at 05: 40 AM. Load affected was 2 MW. At 07:45 AM circuit breaker of Bamnauli ckt 1 at Najafgarh end without indication. Load affected was 81 MW. Load was shifted by Discom except 15 MW. Load restored after turning on 66 kC bus coupler at 08:04 AM. The 11 kV load normalized at 08:10AM Regards, Delhi SLDC
202111301059462021-11-30 10:59:471) Name of the substation and Time: Testing 2) Name of element tripped/restored: Testing 3) Relay Annunciation: Testing 4) Details of physically damaged equipment: Testing 5) Immediate corrective/system normalization steps performed: Testing 6) Any other relevant information: Testing Regards, Delhi SLDC
202111241550212021-11-24 15:50:221) Name of the substation and Time: 220KV Wazirabad 13:56Hrs 2) Name of element tripped/restored: 160MVA T/F-4 3) Relay Annunciation: NA 4) Details of physically damaged equipment: NA 5) Immediate corrective/system normalization steps performed: NA 6) Any other relevant information: NA Regards, Delhi SLDC
202111240745522021-11-24 07:45:531) Name of the substation and Time: SOW,at 02:38 hrs 2) Name of element tripped/restored: 160 tr. 3) Relay Annunciation: Buchholz relay,OLTC operated,SPR 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: 66 KV B/C made ON 6) Any other relevant information: 26 MW load affected for 2 minute. Regards, Delhi SLDC
202111221352512021-11-22 13:52:521) Name of the substation and Time: PPG at 13:19 hrs. 2) Name of element tripped/restored: 100 MVA-II 220/66 KV 3) Relay Annunciation: diffrential relay and HV REF,high set R phase 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: load shifted by discom at Other source 6) Any other relevant information: 100 MVA-I under shutdown form morning. Regards, Delhi SLDC
202111171552502021-11-17 15:52:511) Name of the substation and Time: 220kV Mahrauli. 2) Name of element tripped/restored: 220kV Tughlakabad ckt 1 3) Relay Annunciation: - 4) Details of physically damaged equipment: - 5) Immediate corrective/system normalization steps performed: - 6) Any other relevant information: Line charged at 15:17 Regards, Delhi SLDC
202111171435472021-11-17 14:35:481) Name of the substation and Time: Mehrauli 13:10 2) Name of element tripped/restored: 220kV Tughlakabad ckt 1 3) Relay Annunciation: B ph Line differential at Mehrauli end and B phs trip, zone 2, 10.30km 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: Load taken on 220kV Tughlakabad ckt 2 at 13:23 6) Any other relevant information: Prior to tripping, 220kV Mehrauli-Tughlakabad ckt 2 was put off at 13:05hrs to facilitate its emergency S/D for reconnecting suspension string jumper at Tension Tno. 68. Total load aroud 190 MW effected of 220kV Mehrauli, Vasant Kunj, RK Puram and DIAL Grids for 12 mins. Regards, Delhi SLDC
202111152237352021-11-15 22:37:361) Name of the substation and Time: Dawarka at 22:02 hrs 2) Name of element tripped/restored: 220 KV PPK-III ckt-I and II 3) Relay Annunciation: over voltage 4) Details of physically damaged equipment: none 5) Immediate corrective/system normalization steps performed: 220 KV Bus coupler made ON at RKP 6) Any other relevant information: line remain charged from PPK-III.at 22:17 hrs both ckt charged. Regards, Delhi SLDC
202111071211242021-11-07 12:11:2516MVA T/F tripped on differential R-Y-B-ph and 86 at 11:45Hrs, load affected was:31Amps, Load normalised through Bus-Section at 11:45Hrs.
202111032213252021-11-03 22:13:26Update: 220KV wazirabad-mandola ckt-2 charged at 22:03 hrs. Regards, Delhi SLDC
202111031850262021-11-03 18:50:27Update: 220/66kV 160MVA Tx-2 charged at 18:34 hrs. Regards, Delhi SLDC
202111031758012021-11-03 17:58:02At 220KV Wazirabad: 220KV Mandola ckt-2 tripped at 17:39Hrs without indication at wazirabad end. NL was affected.
202111031747342021-11-03 17:47:35At 220KV SGTN 160MVA T/F-2 along with I/C-2 tripped on 86A and B at 17:19, load affected was 23MW, 66KV B/C made on at 17:22
202111022035582021-11-02 20:35:59220 KV Mandola-III charged at 20:30 hrs.
202111021758492021-11-02 17:58:50At 16:40 hrs:220 KV Mandola ckt -III tripped from mandola end without indication.ckt remain charged from SOW.No load affected.
202111020814142021-11-02 08:14:15100MVA T/F charged at 01:00Hrs. Regards, Delhi SLDC
202111012216432021-11-01 22:16:44100MVA T/F tripped on REF at 21:42Hrs. Load affected was 30MW. TPDDL have shifted its load. Regards, Delhi SLDC
202110310813312021-10-31 08:13:33100 MVA tr-I tripped on Over flux at 03:06 hrs.load normalized through 33 KV Bus coupler at 03:08 hrs.Tr. charged at 07:59 hrs.
202110260911242021-10-26 09:11:25160 MVA tr-II tripped on Diffrential RYB phase at 09:05 hrs. NO load affected.
202110250856252021-10-25 08:56:26 220KV Maharani Bagh ckt charged at 08:12Hrs. Regards, Delhi SLDC
202110241950262021-10-24 19:50:27At 220KV Mehrauli 220/66KV T/F-1 tripped on relay PRV, 86 and 30B. I/C-1,2,3,4 of 220/66KV T/F tripped on E/f at 18:55. Load affected:-I/C-1 and 3: 24MW each, I/C-2: 36MW, I/C-4: 35MW. Load normalized after I/C-2,3,4 made on at 19:15. Note:- 220/66kv T/f-1 is under breakdown
202110241946272021-10-24 19:46:28 220KV Maharani Bagh ckt tripped on Z-1 R-phase 3.9km at 19:35Hrs. No load was affected. Regards, Delhi SLDC
202110241832252021-10-24 18:32:26 220KV Maharani Bagh ckt-I charged at 18:15Hrs. Regards, Delhi SLDC
202110241723572021-10-24 17:23:58 220KV Maharani Bagh ckt-I tripped on Z-1 RB-phase 86 at 16:54Hrs. No load was affected. Regards, Delhi SLDC
202110201450232021-10-20 14:50:2411 KV incomer -I charged at 13:00 hrs.
202110201231422021-10-20 12:31:4311 KV Incomer -I tripped on Earth fault.3.5 MW load affected. Msg conveyed to BRPL for load shifting.
202110200837022021-10-20 08:37:03 20MVA T/F-1 tripped on 86 at 02:52Hrs. Load affected was 3MW. Load normalised through 11KV Bus Section at 02:55Hrs. 20MVA T/F-1 charged at 03:35Hrs. Regards, Delhi SLDC
202110192058562021-10-19 20:58:57 20MVA T/F-2 tripped on O/C RYB-phase at 19:35Hrs. Load affected was 4MW. Load normalised after charging 20MVA T/F-2 at 20:08Hrs. Regards, Delhi SLDC
202110181213172021-10-18 12:13:18At 11:23 hrs, 33 kV Incomer - 1 tripped without indication. affecting about 30 MW load. At 11:30 hrs, load normalized by closing 33 kV Bus Coupler. Maintenance team is attending the breakdown.
202110181204002021-10-18 12:04:01At 11:23 hrs, 33 kV Incomer - 1 tripped without indication. affecting about 30 MW load. At 11:30 hrs, load normalized by closing 33 kV Bus Coupler. Maintenance team is attending the breakdown.
202110181203282021-10-18 12:03:28At 11:23 hrs, 33 kV Incomer - 1 tripped without indication. affecting about 30 MW load. At 11:30 hrs, load normalized by closing 33 kV Bus Coupler. Maintenance team is attending the breakdown.
202110172134382021-10-17 21:34:39100 MVA tr-III tripped on Buchholz Alarm WTI at 21:13 hrs. No load affected.
202110172132502021-10-17 21:32:51100 MVA tr-II tripped on 195 BC, diffrential B phase at 21:00 hrs. No load affected.
202110141258292021-10-14 12:58:30 220KV Bamnauli ckt-II charged at 12:55Hrs. Regards, Delhi SLDC
202110141219272021-10-14 12:19:28 220KV Bamnauli ckt-II tripped on R-phase differential at 11:49Hrs. Load affected was 81MW. Load normalised through 220KV B/C at 11:50Hrs. Regards, Delhi SLDC
202110131813392021-10-13 18:13:40220kV Mandola-Gopalpur ckt 1 energized at 18:06 hrs.
202110131504252021-10-13 15:04:26100 MVA tr-I charged at 15:00 hrs on NO load.Tr. under B/D from dated 21.08.2021.
202110131141402021-10-13 11:41:41at Gopalpur s/stn supply failed due to tripping at Mandola ckt-1 at mandola end on Pole discrepancy at 10:30 hrs.load normalized through 220 KV SOW ckt-I.40 MW (subji mandi)Load affected for 10 minute.
202110122151362021-10-12 21:51:38At 20:33hrs:: Load of Ridge Valley normalized by taking load on RK Puram ckt. (20:30hrs:: 220Kv Bus section-II at RK Puram put ON.)
202110122147112021-10-12 21:47:12At 20:10hrs:: Complete Load(approx 70MW) of Ridge valley affected due to supply fail from 220KV RK Puram station(220Kv Bus section-II at RK Puram Tripped on E/F)and tripping of 220KV Naraina ckt on master 86. NOTE: The above trippings occurred when 220KV Naraina was taking load on 220Kv Ridge Valley ckt.
202110121540042021-10-12 15:40:07220 KV BTPS ckt-II charged at 15:15 hrs.
202110121124372021-10-12 11:24:37while processing shutdown of 220 KV Mundaka ckt ,220 KV bus coupler tripped on auto trip at 10:32 hrs.B/C made on at 10:37 hrs.39 MW load affected, shifted by discom at 10:35 hrs.
202110121007392021-10-12 10:07:40220 KV BTPS ckt-II tripped on Distance prot R phase from both end.distance from BTPS 1.8 KM.No LOad affected.
202110092035462021-10-09 20:35:47220 KV Narela-mandola ckt-I charged at 20:14 hrs.
202110091558282021-10-09 15:58:29At 15:53, 66kV I/C close and load of 66kV Dheerpur normalized.
202110091540122021-10-09 15:40:13At 15:10 Hrs, upon energizing 66kV Burari ckt which was under S/D by TPDDL, the same tripped on E/F with smoke in Y Ph LA, causing tripping of 66kV I/C#4 on O/C. About 17MW load of 66kV Dheerpur ckt is effected due to absence of alternative source.
202110091343522021-10-09 13:43:53At 13:24hrs, 220kV Narela Mandola ckt 1 tripped at both ends on A-N phase fault, distance 6.86km from Narela end. No load is effected.
202110080732072021-10-08 07:32:09HI
202110071613272021-10-07 16:13:31220KV Bamnoli-Dail ckt-2 charged at 12:45Hrs.
202110070744162021-10-07 07:44:17220 KV Bamnauli ckt-II tripped on distance prot.R and Y phase,zone-I,2.76 km from bamnauli at 07:27 hrs.No load affected.
202110062312342021-10-06 23:12:3620 MVA tr-II tripped on OLTC at 22:40 hrs.11 KV bus section also tripped on O/C.3 MW Load affected. Advised to BRPL for shifting the load.
202110061539002021-10-06 15:39:01 220KV Tughlakabad ckt-II charged at 15:33Hrs. Regards, Delhi SLDC
202110061358092021-10-06 13:58:10220KV Tughlakabad ckt-II tripped on Z-1 C-phase 5.9km at 13:38Hrs. No load was affected. Regards, Delhi SLDC
202110051504152021-10-05 15:04:16220 KV Narela mandola ckt-I charged at 14:40 hrs.
202110051351112021-10-05 13:51:12220 KV Mandola ckt-I tripped on distance prot. zone-I 6.31 KM at 13:25 hrs.No load affected.
202110041535182021-10-04 15:35:19Due to heavy spark in Yard 33 KV Bus-coupler made off at 15:10 hrs.later grid staff informed Bus isolator of Bay no-2 and 5 damaged.21 MW load affected. massage conveyed to the Discom for shifting the Load.
202110041516302021-10-04 15:16:31100 MVA tr-III charged at 15:07 hrs.
202110041145172021-10-04 11:45:18100 MVA Tr-III tripped on diffrential,RYB Phase.O/C,E/F,R Phase LA blast at 11:30 hrs. No load affected.
202110021111112021-10-02 11:11:12At 10:22 hrs, Kashmiri Gate Ckt-2 tripped on differential proection. About 40 MW load was affected for 2 mins.
202110012116492021-10-01 21:16:50100 MVA Tr-II charged on NO-Load at 20:40 hrs.Tr. under breakdown from dated 09.06.2021.
202110011413182021-10-01 14:13:19220kV Rohini-1-Bawana ckt 2 normalized at 13:04 hrs.
202110011240252021-10-01 12:40:26At 12:02Hrs, 220kV Mehrauli-Tughlakabad ckt-1 tripped at Mehrauli end while Auto-recloser operated at Tughlakabad end, resulting in tripping of 66kV CBlock-1 and 2, CDot 1 and 2, Malviya Nagar-1 and Ignou ckts on SPR affecting approx. 130 MW load of Mehrauli SStn which was partially shifted by BRPL. All feeders and Tughlakabad ckt normalised by 12:27 Hrs.
202110011047412021-10-01 10:47:42At 09:56 hrs, 220kV Rohini-1-Bawana ckt 2 tripped on RY phs differential. Approx. 60MW Load effected which was normalized on 220kV B/C at 09:57 hrs.
202109302045262021-09-30 20:45:33 33KV I/C-II charged at 18:34Hrs and 16MVA T/F-III charged at 18:40Hrs. Presently 33KV I/C-III and 16MVA T/F-IV are still under breakdown. Regards, Delhi SLDC
202109301711372021-09-30 17:11:38At 16:44 Hrs, 33kV Incommmers 2 and 3 tripped along with 33kV Bus-2 and half bus-1. Heavy SF6 Gas leakage reported in GIS chamber. Relays not reported yet by Grid staff. Around 80MW load effected initially, which has been shifted by DiSCOMs.
202109301642362021-09-30 16:42:37Update: 400kV Mundka-Jhatikara Ckt-2 charged at 16:35 hrs. Regards, Delhi SLDC
202109301319572021-09-30 13:19:59400kV Mundka-Jhatikara Ckt-2 tripped on R-N fault at 13:31 hrs. No load was affected. Regards, Delhi SLDC
202109300647042021-09-30 06:47:05At 04:15 hrs, 220 kV Panipat ckt -1 energized.
202109300646522021-09-30 06:46:53At 04:15 hrs, 220 kV Panipat ckt -1 energized.
202109291946112021-09-29 19:46:12At 19:08 hrs, at 220 kV Narela, 220 kV Panipat Ckt-1 tripped on distance protection, SOTF, EF. R phase LA found damaged. No load affected.
202109291945462021-09-29 19:45:47At 19:08 hrs, 220 kV Panipat Ckt-1 tripped on distance protection, SOTF, EF. R phase LA found damaged. No load affected.
202109282314132021-09-28 23:14:14220 KV Narela-rohtak road ckt-II charged at 22:20 hrs.
202109282314092021-09-28 23:14:13220 KV Narela-rohtak road ckt-II charged at 22:20 hrs.
202109281823332021-09-28 18:23:34At 17:14 hrs:220 KV Rohtak road ckt-II tripped on Distance Prot.,B phase,earth fault,2.89 km.No Load affected.
202109281045042021-09-28 10:45:06220KV Bamnoli-PPK-2 ckt 2 tripped on RYB differential, 86 RYB at 09:42. due to overloading T/F-1 also tripped on LBB,OC,86 which was on ckt-1. after clearance load was taken through 66KV B/C at 09:44 and T/F-1 charged on 09:48. load affected due to ckt-2 tripping: 124MW and T/F-1 tripping:50MW.
202109271937262021-09-27 19:37:27Update: 200kV Narela Mandola ckt 2 energized at 18:38 hrs.
202109271614182021-09-27 16:14:19(14:14 hrs)220KV Mandola ckt-II tripped from both ends on differential protection Y and B phase. No load affected since load was taken by Mandola -Narela ckt-I.
202109241153372021-09-24 11:53:38At 11:05 hrs: supply from 220 kV Mandola failed with no tripped reported from GPL end. Load taken on SoW Ckt1 at 11:08 hrs. DTL team is patrolling the circuit.
202109231923022021-09-23 19:23:04220 KV Pragati-Parkstreet ckt-II charged at 19:14 hrs.on NO Load.ckt under breakdown since 30.07.2021.
202109211631432021-09-21 16:31:44 100MVA T/F-2 made off by grid staff due to higher concentration of acetylene gas at 16:25Hrs. Regards, Delhi SLDC
202109211609132021-09-21 16:09:13 400KV Jhatikra ckt-II charged at 15:24Hrs. Regards, Delhi SLDC
202109211444112021-09-21 14:44:14400KV mundka-jhatikara ckt-2 tripped on distance protection Zone-1, R-ph, distance-8KM, If=17Kamps, 86A and B at 13:58Hrs. Note: ckt was in charge position from jhatikara and CVT was available at mundka, ckt was tripped only at Mundka stn. Note: No load was affected.
202109201553302021-09-20 15:53:31 16MVA MVA T/F charged at 15:35Hrs. Regards, Delhi SLDC
202109201502112021-09-20 15:02:1216MVA T/F tripped on differential, 86 relay at 14:22Hrs load affected: 145Amps, 20MVA T/F was already under shutdown. Discoms are informed to shift their 11KV load from K.gate stn
202109191651132021-09-19 16:51:14At 16:33 hrs:33 Kv Nehru place ckt-IV tripped on RYB phase distance prot.B phase jumper snapped of the same.alongwith 33 Kv incomer-5 tripped on Earth fault.40 Mw load affected,shifted by BRPL.at 16:42 hrs incomer-5 charged.
202109131654542021-09-13 16:54:55 220KV Bamnauli ckt-I charged at 16:53Hrs. Regards, Delhi SLDC
202109131414422021-09-13 14:14:43 100MVA T/F-3 charged at 13:28Hrs. Regards, Delhi SLDC
202109131202562021-09-13 12:02:56220KV Bamnoli-Dail ckt-1 tripped at 11:48Hrs, Relay Bamnoli:Zone-1, distance-3.2Km, If=17.06Kamps, 186A and B. Relay Dail: R-ph trip, L-E fault, Zone-2,13.5Km.
202109131036362021-09-13 10:36:36 100MVA T/F-3 tripped on SPR at 10:27Hrs. No load was affected. Regards, Delhi SLDC
202109121438302021-09-12 14:38:31220KV Pragati-maharanibagh ckt charged at 14:04Hrs
202109121322442021-09-12 13:22:45At 220KV Pragati-maharanibagh ckt tripped at 12:52Hrs, Rly at M.bagh: L-E fault, distance:3Km, If=3kAmps. Rly at Pragati: trip-ph A, zone-1, O/C, E/F, Ia=15KAmps, distance:1.52Km, 186. No Load was affected.
202109121040072021-09-12 10:40:07At 220KV Trauma center: 100MVA T/F-1 tripped on SPR realy at 10:01Hrs, No Load was affected.
202109111621502021-09-11 16:21:51160 MVA tr-I charged at 16:12 hrs.
202109111452022021-09-11 14:52:04160 MVa Tr-II charged at 14:37 hrs.
202109111405522021-09-11 14:05:5366 KV I/C-II charged at 14:03 hrs.
202109111405042021-09-11 14:05:05160 MVA Tr-III charged at 14:02 hrs.
202109111341092021-09-11 13:41:10160 MVA-tr-I tripped on Buchholz relay at 13:13 hrs. No load affected.
202109111314242021-09-11 13:14:25220 KV Naraina-Dwarka ckt-II charged at 12:59 hrs.
202109111247232021-09-11 12:47:24400 KV Bamnauli-Jhatikara ckt-II charged at 12:34 hrs. ckt was tripped at 05:58 hrs.
202109110859422021-09-11 08:59:42(07:05hrs):: 220KV Dwarka -II tripped from both ends on R phase, 08.5KA fault. No load is affecetd.
202109110858032021-09-11 08:58:04(08:28hrs):: 66KV I/C-II tripped on 86. No load is affected.
202109110857002021-09-11 08:57:01(07:58hrs):: 160MVA-II tripped on pole discrepancy. No load is affected.
202109110855002021-09-11 08:55:01(08:07hrs):: 160MVA-III tripped on oil winding temp high, bucholz trip, transformer trouble alarm. No load is affecetd.
202109080827162021-09-08 08:27:17220 KV SOW - K gate ckt-I Charged at 08:22 hrs.
202109071848342021-09-07 18:48:35As reported, 220kV Rajghat ckt -1 Y-Ph, Line side Dropper conductor damaged.
202109071845052021-09-07 18:45:0518:39Hrs, Kashmiri Gate- Wazirabad ckt-1 Tripped, Y-Ph Distance Prot, Z-1, 1.24Kms, Load 68MW Affected for 1 Min.
202109071840312021-09-07 18:40:3218:20HRs, IP- Rajghat ckt 1 tripped on Distance Protection R,Y,B Phase. Load shifted by Discom.
202109071751072021-09-07 17:51:08220 KV Mandola-Gopalpur ckt-I charged at 17:10 hrs.
202109071750102021-09-07 17:50:1133 KV I/C-V charged at 17:20 hrs.
202109071434402021-09-07 14:34:41220kV Mandola ckt 1 tripped on R-Y phase fault at 14:16 hrs effecting approximately 70 MW load which was normalized by closing 220kV South of Wazirabad ckt 2 at 16:18 hrs.
202109070744442021-09-07 07:44:4533KV I/C-1 charged at 01:20Hrs
202109070114472021-09-07 01:14:48 33KV I/C-V tripped on E/F at 01:05Hrs. Load affected was 25MW. Load normalised through 33KV B/C at 01:10Hrs. Regards, Delhi SLDC
202109070054362021-09-07 00:54:37 100MVA T/F-2 tripped on differential Y-phase at 00:40Hrs. Load affected was 54MW. BRPL have shifted the load. Regards, Delhi SLDC
202109062341212021-09-06 23:41:22 33KV I/C I and II tripped on E/F O/C with the tripping of 33KV Pusp Vihar at 23:10Hrs. Load affected was 92MW. Load normalised after charging 33KV I/C-II at 23:30Hrs. Regards, Delhi SLDC
202109051539462021-09-05 15:39:46 220KV Pragati ckt charged at 15:33Hrs. Regards, Delhi SLDC
202109051400402021-09-05 14:00:40 220KV Pragati ckt tripped on Z-1 R-phase 2.5km at 13:43Hrs. No load was affected. Regards, Delhi SLDC
202109051339082021-09-05 13:39:09 20MVA T/F-1 tripped on 86 directional RYB-phase O/C B-phase with heavy sound at 12:42Hrs. Load affected was 2.5MW. Regards, Delhi SLDC
202109051211122021-09-05 12:11:13 220KV Rohtak Road ckt-II charged at 11:36Hrs. Regards, Delhi SLDC
202109051048362021-09-05 10:48:37 20MVA T/F-1 charged at 10:41Hrs. Regards, Delhi SLDC
202109051009362021-09-05 10:09:37 20MVA T/F-1 tripped on 86 at 09:34Hrs. Load affected was 2MW. Load normalised through bus section at 09:41Hrs. Regards, Delhi SLDC
202109050749172021-09-05 07:49:1807:37Hrs Narela Rohtak Road CKt 2 tripped on Distance Prot Z-1 , 5.2Kms. No Load Affected.
202109042105102021-09-04 21:05:1120:30HRs 20 MVA Tr No 1 tripped on O/C , E/f during charging of a local transformer of 300kVA which was under shutdown. 20:55HRs 20 MVA TR No 1 charged. Total 1 MW Load affected for 25Min during charging of Local transformer.
202109042028332021-09-04 20:28:33160 MVA tr-II charged at 20:13 hrs.tr.was tripped at 13:14 hrs.
202109041854022021-09-04 18:54:03160 MVA tr charged at 18:35 hrs. transformer under B/D since 13:55 hrs dated 03.09.21 .
202109041656512021-09-04 16:56:52 220KV Pragati ckt I and II charged at 16:30Hrs. Regards, Delhi SLDC
202109041430082021-09-04 14:30:092220KV Pragati ckt-I tripped on 86 differential Z-3 15km, 220KV Pragati ckt-II tripped on Z-1 R-phase 1.69km at 13:15Hrs. 160MVA T/F-1 of GT tripped on differential at 13:17Hrs and 160MVA T/F-2 of GT tripped on differential at 13:14Hrs consequently GT-1 and STG of Pragati tripped. Load affected was 150MW of Park Street and 80MW of GT. Load of Park Street normalised at 13:28Hrs through Pragati-Maharani Bagh ckt. and load of GT normalised through 160MVA T/F-1 at 13:30Hrs. Regards, Delhi SLDC
202109040922202021-09-04 09:22:20At 08:12 hrs, Y and B-phase jumpers of 33kV Tughlakabad ckt-2 snapped leading to tripping of all 33kV Incommers 3,4 and 5 on over current. approx-40 MW load effected which was diverted to other sources by BRPL.
202109031624392021-09-03 16:24:4016:20HRs 220kV Sarita Vihar Maharanibagh ckt charged
202109031557292021-09-03 15:57:2915:55Hrs 100MVA Tr-2 charged
202109031417562021-09-03 14:17:57AT 13:40hRS, Due tripping of 220kV Rajghat supply at SLDC Minto Road building fail, resulting tripping of SCADA server.
202109031414202021-09-03 14:14:21At 13:55Hrs 160MVA Transformer tripped on ORS, Load normalize through 66kV Bus Coupler at 14:00 Hrs Load affected 45MW for 5 Min
202109031413152021-09-03 14:13:1613:40Hrs 100MVA Tr-2 tripped on SPR, Load shifted by discom, Load normalize through 33kV Bus coupler at 13:50 Hrs. Total Load affected 55MW for 2 Min
202109031328062021-09-03 13:28:09At 13:13 Hrs Sarita vihar- Maharanibagh ckt tripped on both ends at Distance Protection, Z-1 R-Phase, 8.38 Kms, No load affected
202109021408502021-09-02 14:08:51220 KV Narela-Mandola ckt -II charged at 12:19 hrs.
202109020217492021-09-02 02:17:50100MVA T/F-3 charged at 02:09Hrs and load taken at 02:12Hrs.
202109020006232021-09-02 00:06:25220KV Mandola ckt-2 tripped on AR lockout, trip phase A-N, distance-23.73Km, 186, 86A and B and C. 100MVA T/F-3 tripped on differential RYB, 86 A and B, E/F. tripping time:23:37Hrs. Note: NO LOAD was affected.
202109011351192021-09-01 13:51:20220KV Pragati ckt which had earlier tripped at 07:45hrs has been energized and load taken at 12:35hrs.
202109010828452021-09-01 08:28:46220kV Maharani Bagh - Sarita Vihar Ckt tripped on distance protn at 07:45 hrs. No-load is affected. Regards, Delhi SLDC
202108312052082021-08-31 20:52:09220/66kV 100MVA Tx-2 tripped on RYB phase, HVCB, LVCB alongwith 66kV I/C-2 at 19:55 hrs. Approx. 30 MW load affected which shifted by BRPL. Also, 11kV load of 66/11kV 20MVA Tx-2 normalized through bus-section at 20:10 hrs. Regards, Delhi SLDC
202108271852382021-08-27 18:52:38220 KV sarita Vihar-M bagh ckt charged at 18:45 hrs.
202108271811392021-08-27 18:11:40220 KV sarita Vihar-M bagh ckt tripped on distance prot. Zone-I B phase,6.05 Km. at 17:44 hrs.No load affected.
202108271710232021-08-27 17:10:23 220KV Sarita Vihar ckt charged at 17:03Hrs. Regards, Delhi SLDC
202108271427112021-08-27 14:27:12 220KV Wazirabad ckt-II charged at 14:24Hrs. Regards, Delhi SLDC
202108271349472021-08-27 13:49:48 220KV Sarita Vihar tripped on C-phase Z-1 2.05km O/C E/F at 13:34Hrs. No load was affected. Regards, Delhi SLDC
202108271344262021-08-27 13:44:29220KV Wazirabad ckt-2 tripped on AR, 186 A and B, Line differential R and B-ph at 13:01, Load affected: 46MW, Load normalized through 220KV B/C at 13:01. Regards, Delhi SLDC
202108261257172021-08-26 12:57:1812:50Hrs 220KV BTPS -Sarita Vihar CKT-1 charged
202108261225162021-08-26 12:25:1712:05 Hrs Due to arriving of monkeys 33kV incomer of 100MVA Tr-1 and 2 were manually switched off by concerned O and M department as precautionary measure. Same were restored at 12:09 Hrs. 110 MW Load affected from 12:05 Hrs to 12:09 Hrs.
202108261027232021-08-26 10:27:2910:10Hrs Ghazipur Patparganj Ckt chraged
202108260852572021-08-26 08:52:58At 08:00 hrs. 220KV BTPS CKT-1 tripped w/o indication. No load affected.
202108251249212021-08-25 12:49:2212:47Hrs Wazirabad-Gopalpur ckt2 charged
202108251213282021-08-25 12:13:30At 12:04Hrs TKD-BTPS ckt 1 charged
202108251055022021-08-25 10:55:03At 10:25Hrs Rajghat IP ckt 1 tripped without indication, Load shifted by discom.
202108251008452021-08-25 10:08:469.56HRs BTPS-Tughlkabad Ckt1 Distance PRot Z-1, B-Ph 1.5Kms, No Load Affected
202108251002202021-08-25 10:02:2008.58HRs, 220kV Wazirabad-Gopalpur Ckt 2 Tripped on Distance Prot, E/f, 7.7 Kms
202108242028162021-08-24 20:28:18 220KV Mandaula ckt-II charged at 20:26Hrs. Regards, Delhi SLDC
202108241906472021-08-24 19:06:56 220KV Mandaula ckt-II tripped on B-phase differential at 18:50Hrs. No load was affected. Regards, Delhi SLDC
202108230709522021-08-23 07:09:53 Bawana-CCGT Bawana Interconnector ckt-I tripped on Pole Discrepancy at 00:59 hrs. no load affected.
202108221933172021-08-22 19:33:1819:30Hrs 220kV Pragati-Sarita Vihar Ckt charged
202108221724062021-08-22 17:24:07220 Kv Pragati-Sarita Vihar ckt tripped on Distance prot.Zone -I,3.69 Km,B phase at 17:08 hrs.No load affected.
202108211652122021-08-21 16:52:13At 16:50 hrs, 315 MVA ICT-3 energized.
202108211507152021-08-21 15:07:16220kV Sarita Vihar-BTPS Ckt-2 charged at 13:36 hrs. Regards, Delhi SLDC
202108210925562021-08-21 09:25:5606:53hrs BTPS-I normalized. (07:00hrs) Maharani bagh normalized.
202108210920232021-08-21 09:20:24(At 06:39hrs):: Supply fail from 220KV BTPS-I and 220 KV BTPS-II tripped on D/P and 19KA B phase(RYB)line to ground fault. 220KV Maharani Bagh also tripped on C phase fault(ABC). NO load affected.
202108210906112021-08-21 09:06:11Narela:: load of Narela normalized through 220Kv B/C at 04:58hrs. DSIIDC:: Load of DSIIDC normalized through 220KV Bawana I and II. 220KV Narela-Mandola ckt I and II normalized at 06:00hrs.
202108210902362021-08-21 09:02:36(At 04:52hrs)::220KV Mandola ckt-I and II , supply fail from Mandola on DT receive signal. Load of Narela as well as Partial load of 220KV DSIIDC also affecetd.
202108210859082021-08-21 08:59:09(At 03:40hrs):: 315MVA ICT-III tripped on Bucholz relay. No load affected.
202108201400592021-08-20 14:00:59At 220KV Sabzi Mandi 16MVA T/F-1 and 2 tripped along with their I/C, Relay on both T/F: OC, RYB-ph trip, 86 and relay on I/C-1: without indication, I/C-2: OC, B-ph. time:12:25, No Load was affected.
202108201351312021-08-20 13:51:33 220KV Mandaula ckt-II charged at 13:50Hrs. Regards, Delhi SLDC
202108201003512021-08-20 10:03:52 220KV Mandaula ckt-II tripped without indication at 09:25Hrs. CVT coming at Narela end. No load was affected. Regards, Delhi SLDC
202108192242512021-08-19 22:42:51220 KV Bawana-Kanjhawla ckt-I charged from Bawana End through TBC at 22:14 hrs.
202108192242092021-08-19 22:42:10220 KV Bawana-Kanjhawla ckt-I charged from Bawana End through TBC at 22:14 hrs.
202108192143172021-08-19 21:43:18At 20:58 Hrs:220 KV Bawana-Kanjhawala ckt-II tripped on distance prot.R phase, 9.3 Km,R phase LA blast reported at kanjhawala End. Bawana-Kanjhawala ckt -I made off due to heavy sparking in R phase CT at 400 KV Bawana Yard (21:35 hrs).No Load affected.
202108191953372021-08-19 19:53:38220 KV Bawana-Kanjhawala ckt-I charged at 18:55 hrs and ckt-II charged at 19:41 hrs.
202108191225102021-08-19 12:25:11 Supply fail of 220KV Bawana ckt-I and 220KV Bawana ckt-II at 11:40Hrs. Relay at Bawana end on Kanjhawala ckt-I are R-phase Z-1 4.6km and on Kanjhawala ckt-II are RB-phase Z-2 25.26km. Load affected was 200MW. Load normalised through Najafgarh ckt at 11:57Hrs. Regards, Delhi SLDC
202108190608102021-08-19 06:08:11Pragati Unit no 2 tripped at 04:46 hrs. Generation loss 140 MW Approx.
202108181306562021-08-18 13:06:57At 12:46Hrs, 220kV Narela-Mundka ckt 2 tripped, distance Protection 3-Ph, 4.29Kms, 5.836 KA Relays
202108171438052021-08-17 14:38:06At 14:15 16MVA Transformer No. Charged
202108171334252021-08-17 13:34:28220kV NJF-BML ckt 1 Restored at 12.00 HRs
202108171204212021-08-17 12:04:21100MVA TR-2 33kV Incomer charged at 11:43 Hrs with 33kV Bus 2, 33kV Y and B phase CB Pole of Bus coupler are reported damage.
202108171043412021-08-17 10:43:42100MVA Transformer No-1 Incomer charged at 9.58 Hrs
202108171012022021-08-17 10:12:039:36Hrs 33kV Incomer of 100MVA Tr No 1 and 2 Tripped on O/c and E/F Respectively, 33kV Bus Bar operated at O/c, E/F 10MW Load affected from 9.36 Hrs to 9.58 Hrs.
202108170712172021-08-17 07:12:18At 220KV sabji mandi:16MVA PTR-1 tripped on differential B and C-ph and 86 at 05:45hrs, Load affected:30Amps, Load was normalised through 11KV bus-section.
202108170709322021-08-17 07:09:33At 220KV NJGH: 220KV Bamnoli ckt-1 tripped at 06:07hrs without any relay indication, Load was taken on 220KV mundka-NJGH ckt.
202108170356362021-08-17 03:56:37At 220KV PPG: 220KV IP Power ckt-2 restored at 03:55hrs.
202108170330532021-08-17 03:30:54At 220KV PPG: 220KV IP Power ckt-2 tripped on relay 186 at 03:05hrs. Note: ckt is in charge position at IP end.
202108162031532021-08-16 20:31:54 220KV Maharani Bagh ckt-II charged at 20:22Hrs. Regards, Delhi SLDC
202108161935292021-08-16 19:35:29