POWER SYSTEM OPERATION CORPORATION LIMITED NATIONAL LOAD DESPATCH CENTRE B-9, QUTUB INSTITUTIONAL AREA NEW DELHI

Transcription

1 POWER SYSTEM OPERATION CORPORATION LIMITED NATIONAL LOAD DESPATCH CENTRE B-9, QUTUB INSTITUTIONAL AREA NEW DELHI Report dated 5 th May 2018 at 15:00hrs Sub: Load crash occurred in Northern Region due to thunderstorm on the night of 2 nd and 3 rd May 2018 On 2 nd May 2018, due to thunderstorm & dust storm, tripping of multiple 765 kv and 400 kv lines took place and around 14GW load crash has occurred in Northern region. In this connection, flash report prepared by NLDC and NRLDC is enclosed at Annexe-I and Annexe-II respectively. The current status of elements tripped in northern region is enclosed as Annexe-III. In continuation of the above report, the information regarding restoration of important lines /s/bus which went under outage on 2 nd May 2018 due to the dust/thunder storm is given below. S.No. Name of Element Outage date & Time Restoration date & time /400KV -1 at Agra (20:33) /400KV -2 at Agra (20:34) KV Agra Gwalior line 2 20:32 ( ) KV Agra Bus-1 & (20:34) 18:03 ( ) 19:33 ( ) 02:38 ( ) 00:02 ( ) 1

2 In addition to the above, tower collapse has been reported due to the dust and thunderstorm on 2 nd May 2018 and earlier events on 11 th April 2018 and 27 th April The details of outages of trunk elements which are still under outage as on date are given below: S.No. Name of Element Tripping Time Reason of Outage/Remarks kV Agra-Jhatikara line 18:29 ( ) Line was already under breakdown due to Tower damage from Loc. No. 173 to 177 since 11 th April Further 03 nos. of towers damaged on 2 nd May 2018 due to thunderstorm kV Agra-Fatehpur-1 20:34 ( ) kV Agra-Fatehpur Ckt-II 20:33 ( ) Conductor damaged between loc. no 683 to 684 due to collapse of nearby tower of MTDC BNC- Agra. Switchyard equipments damaged at Agra KV Agra Gwalior line I 20:32 ( KV Agra Aligarh line 20:32 ( ) KV Kanpur Varanasi line - 2 1:49 ( ) KV Kanpur Varanasi line - 1 9:00 ( ) kv Agra Kanpur ( ) kv Bilaspur-Dharamjaygarh- S/c 18:02 ( ) 9 Nos Tower collapsed near Agra(PG) on 2 nd May Nos. of tower collapsed near Agra station on 2 nd May No Tower collapse at 22.1KM from Kanpur end Being a double circuit tower, due to tower collapse at 22.1KM from Kanpur end; Circuit-1 is opened on emergency basis One no. of tower partially damaged Tower Collapse at locations 121 & HVDC Vindhyachal back to back Block-2 14:55 ( ) Differential protection operated. 2

3 Due to high temperature weather condition, the all India demand is in increasing trend which is in the range of 148 GW and 152 GW during the day time. Meanwhile IMD has issued the notice for 05/05/2018 regarding dusty winds, thunder storm /dust storm in N.E states, West Bengal, JK, HP, Uttarkhand, Punjab and Rajasthan. Alert has been issued to all RLDCs/States/Constituents/Transmission licensee/discoms from NLDC. Planned transmission outages are being rescheduled on trunk corridors; Total Transfer Capability (TTC) has been reduced towards Northern Region considering the above outages besides limitations on HVDC Mundra- Mohindergarh bipole loading due to almost NIL generation at APL Mundra and frequent tripping on the 3000 MW HVDC Champa-Kurukshetra bipole. SCE,NLDC 3

4 Annexe-1 POWER SYSTEM OPERATION CORPORATION LIMITED NATIONAL LOAD DESPATCH CENTRE B-9, QUTUB INSTITUTIONAL AREA NEW DELHI Flash Report 1. Date and time of the Incident: Thunderstorm & Heavy rain related tripping near Agra and adjoining areas during intervening night of 02 nd -03 rd May System Conditions: Load crash of around MW occurred (difference with all India demand of previous day) due to thunderstorm and heavy rain, 765kV Agra s/s went under complete outage due to tripping of lines. Affected Area Northern region, Western region and Eastern region. Railway traction load supplied from Auraiya station affected briefly. Demand plot of All INDIA Demand of 01 st & 02 nd May 2018 is given below. 02 nd May 2018 Reduction of MW 01 st May

5 The major impact was on northern region demand and demand plot of Northern region of 01 st & 02 nd May 2018 is given below. 01 st May 2018 Reduction 02 nd May 2018 The faults observed in transmission lines were captured in voltage plot of Phasor Measurement Unit (PMU) as corresponding dip in voltage and the same is reflected in PMU voltage plot of Agra station. The one hour PMU plot from 2000 hrs to 2100 hrs of Agra is given below. Fig: PMU voltage plot of 400 kv Agra station 2

6 The frequency has remained above most of the time during inclement weather. Frequency plot from 20:00 Hrs ( ) to 08:00 ( ) Hrs is given below Hz 50 Hz Hz 3. Details of tripping: During the storms, it is reported that many equipments in 765 kv Agra substation have got damaged there by affecting the power flow. Total of 87 transmission lines of voltage level 220 kv and above tripped in the intervening night of 02 nd -03 rd May 2018 due to heavy thunderstorm in northern region, western region and eastern region. The same is tabulated below. Number of line tripping in the night of 02nd -03rd May 2018 Region 765 kv line 400 kv line 220 kv line HVDC Line Total Northern Region Western Region Eastern region Inter-regional lines Total The Railway traction supply was also affected in the incident due to tripping of lines from Agra station. The traction supply from 400/220 kv Auraiya station was interrupted from 00:36 Hrs to 01:50 Hrs of 03 rd May The list of trippings is enclosed at annexure I. 4. Action Taken: Coordinated with all RLDCs to restore the lines. Total of 8 no. of reserve regulation ancillary services (RRAS) down instructions were given for maintaining the frequency within band in view of load crash besides relieving the loading in system. 5. Current Status: The system is in ALERT state sue to the above trippings and all control centers are being sensitize accordingly. Due to complete outage of 765 kv Agra station which is centrally 3

7

8 Annexure-I The details of transmission lines tripped during 02nd -03rd May 2018 is given below: Northern Region Lines S.No. Element Name Volta ge Level Owner Outage Revival Date Time Date Time Reason 1. Jalandhar- Kurukshetra(PG) kv PGCIL : :00 Bad weather. R-N Phase 2. Kanpur-Varanasi-D/C 765 kv PGCIL :41 Tripped on R-N fault, 22.1KM from Kanpur end. 3. Patiala 315 MVA 1 400/22 0 kv PGCIL : :27 Bad weather. 4. Rajpura (400kV) 500 MVA 3 400/22 0 kv PGCIL : :04 bad weather. 5. Anta RS - Chabra kv RRVPNL : :25 6. Anta RS - Kawai(Adani) kv RRVPNL : :30 7. Bhilwara 400(RVPNL)- Chabra(RVPNL) kv RRVPNL :40 * * 8. Anta RS - Kawai(Adani) kv RRVPNL : :02 9. Jind(PG)-Kurukshetra(PG) kv PGCIL : :26 LBB, Bus bar protection of Bus-2 operated at Anta. LBB, Bus bar protection of Bus-2 operated at Anta. Phase to earth faultdue to Power Swing Block LBB, Bus bar protection of Bus-2 operated at Anta. Phase to earth faultb- N, from Kurkshetra. 10. Baghpat(PG)- Dehradun(PG) 400 kv PGCIL : :10 Due to 11. Meerut-Koteshwar Pool kv PGCIL : :39 Phase to earth faultdue to Bad Weather 5

9 Northern Region Lines S.No. Element Name Volta ge Level Owner Outage Revival Date Time Date Time Reason 12. Abdullapur(PG)- Dehradun(PG) kv PGCIL : :46 Phase to earth faultr- N 13. Koteshwar Pool (PG)- Tehri(THDC) Ataur(UP)- Muzaffarnagar(UP) 15. Alaknanda HEP - Muzaffarnagar Muzaffarnagar- Vishnuprayag Muzaffarnagar(UP)- Roorkee(PG) 18. Bareilly II (PG) - Kashipur (UTT) Muzaffarnagar 315 MVA kv PGCIL : : kv UPPTCL : : kv UPPTCL : : kv UPPTCL : : kv UPPTCL : : kv PGCIL : :22 400/22 0 kv UPPTCL : :31 Phase to earth faultdue to Bad Weather Manually tripped due to sparking observed in switchyard. Manually tripped due to sparking observed in switchyard. B- Phase CB of Muzaffarnagar- Vishnuprayag burst at Muzaffarnagar end. Manually tripped due to sparking observed in switchyard. E/S/D availed due to sparking observed in R-Phase isolator at Kashipur end. Manually tripped due to sparking observed in switchyard. 20. Muzaffarnagar 315 MVA 1 400/22 0 kv UPPTCL : :29 Manually tripped due to sparking observed in switchyard. 21. Muzaffarnagar 315 MVA 3 400/22 0 kv UPPTCL : :49 Manually tripped due to sparking observed in switchyard. 22. Muzaffarnagar 400 kv Bus Muzaffarnagar 400 kv Bus kv UPPTCL :58 * * 400 kv UPPTCL :58 * * Manually tripped due to sparking observed in switchyard. Manually tripped due to sparking observed in switchyard. 24. Ballabgarh(PG)- Bamnauli(DTL) kv DTL : :45 bad weather. 25. Ballabgarh(PG)- 2 Bamnauli(DTL) kv DTL : :46 bad weather Bhiwadi-Neemrana kv PGCIL : :17 6 Tripped on R-N fault, 48.5KM from Bhiwadi end. 6

10 Northern Region Lines S.No. Element Name Volta ge Level Owner Outage Revival Date Time Date Time Reason 27. Bassi-Kotputli 400 kv PGCIL : :58 bad weather 28. Bareilly(PG)- Moradabad(UP) kv PGCIL : :33 Phase to earth fault. 29. Alwar II-Hindaun II kv RRVPNL : :33 Tripped on B-N fault, Distance 79KM from Hindaun end. * * 30. Heerapura-Hindaun II 400 kv RRVPNL :50 to sparking observed in R-Phase isolator at Manually tripped due Hindaun end. 31. Gwalior (PG) - Phagi (RVPNL) kv PGCIL : :27 Tripped on R-N fault. 32. Ballabgarh-Mainpuri kv PGCIL : :29 Tripped on R-N fault 33. Agra-Gwalior kv PGCIL :32 * * Phase to earth faulty- N, 114km & 6.89kA 34. Agra-Gwalior kv PGCIL :32 * * Phase to earth faulty- N, 107km & 5.6kA from Gwalior end. 35. Agra(PG)-Agra(UP) kv PGCIL : :13 Tripped on R-N fault 36. Agra - Biswanath Cherialli line Auraiya(NTPC)- Mahgaon(PG) 800 kv HVDC PGCIL :35 * * 220 kv PGCIL :47 * * bad weather, as reported tower collapse near Agra end. Details awaited. Phase to phase faultb- C, 174km from Auraiya end. 38. Agra(UP)-Fatehabad 765 (UP) kv PGCIL : :48 Tripped on R-N fault 39. Ajmer II(RVPNL)- Phagi(RVPNL) 2(RRVPNL) 400 kv RRVPNL :50 * * problem in CVT. 40. Fatehabad 4 765(UP)- Lalitpur 0 TPS(LPGCL) kv UPPTCL : :00 bad weather Fatehpur 315 MVA /22 0 kv PGCIL : :46 bad weather 7

11 Northern Region Lines S.No. Element Name Volta ge Level Owner Outage Revival Date Time Date Time Reason 42. Mainpuri(PG)- Neebkarori(UP) kv UPPTCL :05 * * Tripped on B-N fault, 2.25KM from Neebkarori end. 43. Aligarh(UP)-Mainpuri 765(UP) kv UPPTCL : :46 Phase to earth fault. 44. Aligarh 765(PG)-Orai 765(PG) Mainpuri(PG)- Neebkarori(UP) kv PGCIL : : kv UPPTCL :15 * * problem in guage of CB. Tripped on B-N fault, 2.27KM from Neebkarori end. 46. Champa(WR) - Kurukshetra(NR) line kv HVDC PGCIL : :05 Due to bad weather, details awaited. 47. Agra-Kanpur 400 kv PGCIL :23 B-N Fault. As reported by CPCC, Tower bend observed. 48. Aligarh 765(PG)-Orai 765(PG) kv PGCIL : :22 Tripped on R-N fault, 215KM from Aligarh end. 49. Orai 400(UP)-Orai 765(PG) kv PGCIL : :05 Due to bad weather 50. Orai 400(UP)-Orai 765(PG) kv PGCIL : :50 Due to bad weather 51. Orai 765(PG) 1000 MVA 1 765/40 0 kv PGCIL : :33 Tripped on oil surge relay operated. 52. Bhilwara-Chhabra kv RRVPNL : :02 LBB Optd at Bhilwara end 53. Ajmer II(RVPNL)-Bhilwara 400(RVPNL) kv RRVPNL : :27 LBB Optd at Bhilwara end 54. Fatehpur-Mainpuri kv PGCIL : :39 Tripped on R-N fault Amritsar-Parb-pol kv PGCIL :25 * * Dhanonda-Jhajjar CLP kv HVPNL : :16 5 Phase to earth faultr- N, 7km from CLP end. 8

12 Northern Region Lines S.No. Element Name Volta ge Level Owner Outage Revival Date Time Date Time Reason 57. Meerut - Moga 765 kv PGCIL :25 * *. 58. Bara TPS(UP)-Meza TPS(UP) kv UPPTCL :33 * * Over voltage. 59. Lucknow(UP)- Singrauli(NTPC) 400 kv PGCIL : :08 Tripped on R-N fault 60. Gorakhpur(PG)- Muzaffarpur(PG) kv PLINK :34 * * Tripped on R- N fault 61. Allahabad(PG) - Kanpur New(PG) kv PGCIL : :52 Tripped on B-N fault, 62. Allahabad Rewa Road(400kV) - Banda(400kV) kv UPPTCL :38 * * Tripped on B-N fault, KM from Banda end. 63. Kanpur New-Varanasi kv PGCIL :41 * * Tripped on R-N fault, 22.1KM from Kanpur end. 64. Gorakhpur(PG)- Motihari(DMTCL) kv PGCIL : :39 Tripped from Motihari end only. 65. Vindhyachal HVDC BtB Block kv HVDC PGCIL : :44 DC over current protection operated 66. Obra TPS(UPPTCL) 315 MVA 1 400/22 0 kv UPPTCL :05 * * Details awaited. 67. Anpara B-Anpara D kv UPPTCL :14 * * Phase to earth faultb- N. 68. Allahabad Rewa Road(400kV) - Obra 400 kv UPPTCL :20 * * Over voltage. 69. Fatehpur-Varanasi kv PGCIL Bus bar protection operatedtripped on R- N fault, 17.79KM from Varanasi end, F.C=10.1KA 70. Chamera pool-jalandhar kv PGCIL :20 * * Bus bar protection operatedbus-2 at Chamba/ line faulty Chamba 315 MVA /22 0 kv PGCIL : :48 Bus bar protection operatedbus-2 at Chamba 9

13 Northern Region Lines S.No. Element Name Volta ge Level Owner Outage Revival Date Time Date Time Reason 72. Bareilly(UP)- Dhauliganga(NHPC) 220 kv PGCIL :05 * * Tripped on High voltage. 73. Dhauliganga(NHPC)- Pithorgarh(PG) 220 kv PGCIL :05 * * Tripped on High voltage. 74. Pithorgarh 100 MVA /13 2 kv PGCIL :22 * * Over fluxing. 75. Pithorgarh 100 MVA /13 2 kv PGCIL :22 * * Over fluxing. 10

14 Western Region Lines S.No. Element Name Voltage Level Owner Outage Revival Date Time Date Time Reason 1 Dharamjaygarh(PG)- Jabalpur(PS)-III 765 kv Sterlite : :42 R-Y fault 2 BHADRAWATI- DHARIWAL-I 400 kv PGCIL : :40 B-E fault 3 DHARIWAL-PARLI-I 400 kv PGCIL : :49 B-E fault 4 WARORA- CHANDRAPUR(2)-II 400 kv MSETCL : :01 B-E fault 5 MEHGAON-AURAIYA S/C 220 kv PGCIL : :22 Tripped only from Auraiya 6 220kV Satna-Satna(MP)- 4-IV 220 kv MPPTCL :11 * * B-E fault 7 Vindhayachal(PS)- Satna(PG)-I 765 kv PGCIL : :05 B-E fault 8 VSTPS(IV)-VSTPS(V)-II 400 kv NTPC :13 * * B-E fault 9 VSTPS(NTPC)- VINDHYACHAL(PS)-I 400 kv PGCIL :15 * * R-E fault 10 Sasan-Vindhyanchal-II 765 kv ATIL :18 * * Y-ph-E fault sasan ka,2.86km, V'chal ka,2.42km 11 VSTPS-KORBA-I 400 kv PGCIL : :21 Y-ph-E fault 11

15 Eastern Region Lines S.No. Element Name Voltage Level Owner Outage Revival Date Time Date Time Reason 1 RANCHI-Maithon RB II 400KV PGCIL : :36 R-N Fault 2 RANCHI-New Ranchi II 400KV PGCIL : :51 R-N Fault 3 RANCHI-New Ranchi I 400KV PGCIL : :50 R-N Fault 4 Ranchi-Raghunathpur III 400KV PGCIL : :00 R-N Fault 5 Ranchi-Maithon RB I 400KV PGCIL : :25 R-N Fault 6 Jamshedpur-DSTPS I 400KV PGCIL :35 B-N Fault 7 TSTPP-RENGALI-I 400KV PGCIL : :15 R-N Fault 8 ANGUL-SRIKAKULAM-II 765 kv PGCIL : :19 R-N Fault 9 MUZAFFARPUR- GORAKHPUR-II 400KV PGCIL :34 R-N Fault 10 GORAKHPUR-MOTIHARI-I 400KV PGCIL :40 B-N Fault 12

16 Annexe-II

17 Annexure-A Power System Operation Corporation Ltd. Northern Regional Load Despatch Centre Dated: 03- May Report on Load Crash in Northern Grid from 13:54hrs/02-May-18 onwards The Northern Region (NR) experienced demand crash on account of rain with thunderstorm. The event based upon data received and available at NRLDC is summarized below: Load crash witnessed in the all the states of Northern Region. High frequency and high voltage condition prevailed. Frequency touched 50.22Hz at 04:04hrs/ The load of NR started reducing after 13:54hrs of Average demand crash of MW was observed during inclement weather conditions (night hours of to morning hours of ) as compared to the previous day. The demand pattern of Northern Region and its state is attached as Annex-I. Schedule & Actual of affected NR state control areas is given at Annex-II. The Schedule & Actual IR exchange of NR is given at Annex-III At 16:58hrs, complete station outage occurred at 400/220kV Muzaffarnagar (UP). Total 12 multiple element tripping event occurred in Northern Region, separate list of multiple element tripping along with category according to CEA grid standard is attached as Annex-IV During the storm, complete 765kV Agra (PG) station became dead due to outage of multiple 765kV lines due to equipment damage or tower collapse. At 20:35hrs, HVDC Agra-BNC Pole-2 also tripped due to tower collapse in HVDC line. HVDC Champa (WR) - Kurukshetra(NR) Pole -2 also went under outage at 22:17hrs of 2 nd May At 21:05hrs, 765kV Lalitpur-Fatehabad ckt-2 tripped. Lalitpur generation was hanging on only one ckt 765kV Lalitpur-Fatehabad ckt-2..

18 At 22:12hrs, 765kV Aligarh-Orai ckt-1 tripped, after some time at 22:39hrs, 765kV Aligarh-Orai ckt-2 and 400kV Orai-Orai one circuit also tripped, it led to limitation on import by NR through Orai-Satna and Orai-Jabalpur D/C line. Outage of 765kV Agra (PG) and 765kV Aligarh-Orai lines, Outage of one pole of Champa- Kurukshetra and one circuit of 765 Gwalior-Phagi severely deteriorated WR-NR interconnection corridor. The situation was further complicated with high wind generation in Rajasthan coupled with low demand and power rushing from NR to WR on 400kV Kankroli-Zerda and Bhinmal-Zerda lines. The Railway traction supply was also affected in the incident due to tripping of lines from Agra station. The traction supply from 400/220 kv Auraiya station was interrupted from 00:36 Hrs to 01:50 Hrs of 03rd May kV Railway lines from 220kV Auraiya station was charged after bypassing over voltage protection at 220kV Auraiya (NTPC). Total 36 no. of 400kV and above lines were manually opened to control the voltage and total 91 no. of 220kV and above elements (lines and s) tripped during May The list of tripped elements and opened on high voltage is attached as Annex-V. (some of state control area 220 kv lines may still not be in the list in view information receipt delay from SLDCs) The frequency has remained above most of the time during inclement weather. Frequency plot from 08:00 Hrs ( ) to 18:00 ( ) Hrs is given below: 50 Hz line

19 Summary of demand crash observed in respective states of Northern region: States Load crash started at_ Maximum Demand crashed (MW) J&K 11:47hrs 672(14:01hrs) Punjab 12:28hrs 3105 (14:29hrs) HP 14:08hrs 419(15:43hrs) Haryana 14:39hrs 2930 (17:33hrs) Uttarakhand 15:47hrs 1206(19:48hrs) Delhi 16:24hrs 926(20:40hrs) Uttar Pradesh 16:36hrs 8056 (04:00hrs of ) Rajasthan 17:57hrs 2112 (20:54hrs) NR demand crash 13:54hrs (04:00hrs) The above table also indicates movement of inclement weather conditions from state to state. Actions taken at Control Centre: Warning about inclement weather condition was given to all the states in advance. Alerts were issued to all concerned to reduce under-drawl and for backing down of generation in order to control high frequency operation besides containing overvoltages. Immediate actions were taken to surrender power from ISGS generating stations & ancillary down (RRAS down) were imposed. The generation of ISGS thermal stations was backed down. State control area generation was also reduced by SLDCs. The pattern of regional thermal generation is attached at Annex-VI. Present Condition (16:00hrs of 03 rd May 2018): System is in normal condition. The frequency is being in the IEGC stipulated band. The Northern Regional demand is picking up and is around 38GW. The demand is still 4.1GW less than the normal day. Due to complete outage of 765 kv Agra station which is centrally located in the grid, the import capability of northern region is adversely affected. The transmission towers of 765 kv Agra- Aligarh, 765 kv Kanpur-Varanasi-I & II, 400 kv Kanpur-Agra and MTDC BNC- Alipurduar- Agra are reported to be damaged. The equipment damage reported at 765/400 kv Agra substation. This

20 would delay in restoration of lines and thus limit the transfer capability in west to north corridor this has led to reduction in Total transfer capability (TTC) of Northern region import. The details of revision in TTC for the incident is given below: Corridor Present TTC (MW)-Considering outages Reduction in TTC(MW) from earlier level WR-NR ER-NR Simultaneous NR Import It has been observed from the previous thunderstorm incidents that utilities are manually shutting down their feeders during the storm to avoid collateral damage. It was decided in last year summer preparedness meeting taken by Joint Secretary (Trans), MOP that the states shall categorize all the feeders in two lists, one which do not require manual opening (in view of safety requirements), and the other with safety concern. The list with safety concern shall be progressively reduced. This aspect has been discussed during different meetings at NRPC level as well. However, the list from the states is yet to be received. All utilities shall provide the list of manually opened feeders during this event along with the detailed report to NRLDC at the earliest time. All entities shall also provide the DR/EL, detailed report of the tripped elements/load crash along with the remedial actions taken/to betaken.

21 Annex-I

22 Annex-I

23 Annex-I Maximum demand crash at 04hrs of 3 rd May 2018, 14GW Northern Region Demand Pattern for (01-03 May 2018)

24 Schedule vis-à-vis Actual interchange Annex-II Annex-II

25 Schedule vis-à-vis Actual interchange Annexure-III

26 Inter-Regional Exchange (NR-WR & NR-ER)

27 Annex-IV S. No Element Name Type Voltage Level Owner Outage Revival Date Time Date Time Reason / Remarks Category as per Grid Standard 1 2 Dhuri (400kV)-Rajpura (400kV)-1 Dhuri(400) 500 MVA 3 Line 400 kv PSTCL 2/5/ :36 2/5/ :11 400/220 kv PSTCL 2/5/ :36 2/5/ :52 Phase to earth fault R-N directional earth fault. GI Patiala 125 MVAR B/R Patiala 315 MVA 1 Bus Reactor 400 kv PGCIL 2/5/ :16 3/5/2018 0:56 400/220 kv PGCIL 2/5/ :17 3/5/2018 0:27 Bad weather. Bad weather. GI Ataur(UP)- Muzaffarnagar(UP) Alaknanda HEP - Muzaffarnagar - 2 Muzaffarnagar- Vishnuprayag 1 Muzaffarnagar(UP)- Roorkee(PG) Bareilly II (PG) - Kashipur (UTT) - 1 Muzaffarnagar 315 MVA 2 Muzaffarnagar 315 MVA 1 Muzaffarnagar 315 MVA 3 Muzaffarnagar 400 kv Bus 1 Muzaffarnagar 400 kv Bus 2 Line 400 kv UPPTCL 2/5/ :58 2/5/ :11 Line 400 kv UPPTCL 2/5/ :58 2/5/ :27 Line 400 kv UPPTCL 2/5/ :58 2/5/ :37 Line 400 kv UPPTCL 2/5/ :58 2/5/ :27 Line 400 kv PGCIL 2/5/ :58 2/5/ :22 400/220 kv 400/220 kv 400/220 kv UPPTCL 2/5/ :58 2/5/ :31 UPPTCL 2/5/ :58 2/5/ :29 UPPTCL 2/5/ :58 2/5/ :49 BUS 400 kv UPPTCL 2/5/ :58 * * BUS 400 kv UPPTCL 2/5/ :58 * * Manually tripped due to sparking observed in switchyard. Manually tripped due to sparking observed in switchyard. B-Phase CB of Muzaffarnagar- Vishnuprayag burst at Muzaffarnagar end. Manually tripped due to sparking observed in switchyard. E/S/D availed due to sparking observed in R- Phase isolator at Kashipur end. Manually tripped due to sparking observed in switchyard. Manually tripped due to sparking observed in switchyard. Manually tripped due to sparking observed in switchyard. Manually tripped due to sparking observed in switchyard. Manually tripped due to sparking observed in switchyard. GD-1 15 Ballabgarh(PG)- Bamnauli(DTL) 2 Line 400 kv DTL 2/5/ :23 2/5/ :45 bad weather. GI-2

28 Ballabgarh(PG)- Bamnauli(DTL) 1 Alwar II-Hindaun II - 1 Heerapura-Hindaun II Line 400 kv DTL 2/5/ :23 2/5/ :46 Line 400 kv RRVPNL 2/5/ :49 2/5/ :33 Line 400 kv RRVPNL 2/5/ :50 * * 19 Agra-Gwalior -2 Line 765 kv PGCIL 2/5/ :32 * * 20 Agra-Gwalior -1 Line 765 kv PGCIL 2/5/ :32 * * Agra(PG)-Agra(UP) 2 Agra-Fatehpur ckt- 1 Agra-Fatehpur ckt- 2 Line 400 kv PGCIL 2/5/ :32 2/5/ :13 Line 765 kv PGCIL 2/5/ :32 * * Line 765 kv PGCIL 2/5/ :32 * * 24 Agra-Aligarh ckt Line 765 kv PGCIL 2/5/ :32 * * MVA -1 at Agra 1500MVA -2 at Agra Aligarh 765(PG)- Orai 765(PG) 2 Orai 400(UP)-Orai 765(PG) 2 765/400 kv 765/400 kv PGCIL 2/5/ :32 PGCIL 2/5/ :32 Line 765 kv PGCIL 2/5/ :39 2/5/ :22 Line 400 kv PGCIL 2/5/ :39 3/5/2018 7:50 bad weather Tripped on B-N fault, Distance 79KM from Hindaun end. Manually tripped due to sparking observed in R- Phase isolator at Hindaun end. Phase to earth faulty-n, 114km & 6.89kA Phase to earth faulty-n, 107km & 5.6kA from Gwalior end. Tripped on R-N fault Tripped on R-N fault, 215KM from Aligarh end. Due to bad weather GI-2 GI-2 GI-2 29 Bhilwara-Chhabra 1 Line 400 kv RRVPNL 2/5/ :40 3/5/2018 1: Ajmer II(RVPNL)- Bhilwara 400(RVPNL) 1 Chamera pool- Jalandhar 2 Chamba 315 MVA 2 Bareilly(UP)- Dhauliganga(NHPC) Dhauliganga(NHPC)- Pithorgarh(PG) Line 400 kv RRVPNL 2/5/ :40 3/5/2018 6:27 Line 400 kv PGCIL 3/5/2018 4:20 * * 400/220 kv PGCIL 3/5/2018 4:20 3/5/2018 5:48 Line 220 kv PGCIL 3/5/2018 5:05 * * Line 220 kv PGCIL 3/5/2018 5:05 * * LBB Optd at Bhilwara end LBB Optd at Bhilwara end Bus bar protection operatedbus-2 at Chamba/ line faulty Bus bar protection operatedbus-2 at Chamba Tripped on High voltage. Tripped on High voltage. GI-2 GI-2 GI Pithorgarh 100 MVA -1 Pithorgarh 100 MVA /132 kv 220/132 kv PGCIL 3/5/2018 5:22 * * Over fluxing. PGCIL 3/5/2018 5:22 * * Over fluxing. GD-1

29 37 38 Allahabad Rewa Road(400kV)(UP)- Meza TPS(UP) 2 Allahabad Rewa Road(400kV) - Panki Line 400 kv UPPTCL 3/5/ :30 * * Line 400 kv UPPTCL 3/5/ :30 * * Over voltagetripped Over voltagetripped GI-2

30 Annex-V S.No Element Name Type Jassor(HP)- Pong(BBMB) Bairasuil(NHPC)- Pong(BBMB) Makhu - Nakodar - 2 Dhuri (400kV)- Rajpura (400kV)-1 Dhuri(400) 500 MVA 3 Patiala(PG)- Patran(PTCL) 2 Jalandhar- Kurukshetra(PG) 1 Patiala 125 MVAR B/R Patiala 315 MVA 1 Rajpura (400kV) 500 MVA 3 Voltage Level Owner Outage Revival Expected Date of Date Time Date Time Revival Line 220 kv PGCIL 2/5/ :13 2/5/ :50 - Line 220 kv PGCIL 2/5/ :13 2/5/ :29 - Line 400 kv PSTCL 2/5/ :36 2/5/ :20 - Line 400 kv PSTCL 2/5/ :36 2/5/ :11-400/ 220 kv PSTCL 2/5/ :36 2/5/ :52 - Line 400 kv PGCIL 2/5/ :03 2/5/ :02 - Line 400 kv PGCIL 2/5/ :08 2/5/ :00 - Bus Reactor 400 kv PGCIL 2/5/ :16 3/5/2018 0:56-400/ 220 kv 400/ 220 kv PGCIL 2/5/ :17 3/5/2018 0:27 - PGCIL 2/5/ :23 2/5/ :04-11 Anta RS - Chabra -1 Line 400 kv RRVPNL 2/5/ :40 2/5/ : Anta RS - Kawai(Adani) - 2 Bhilwara 400(RVPNL)- Chabra(RVPNL) 1 Anta RS - Kawai(Adani) - 1 Line 400 kv RRVPNL 2/5/ :40 2/5/ :30 - Line 400 kv RRVPNL 2/5/ :40 * * NA Line 400 kv RRVPNL 2/5/ :40 2/5/ :02 - Reason / Remarks Bus bar protection of Bus-1 operated due to blast of B-ph CT of GT- 3. Tripped from Jassor end. Bus bar protection of Bus-1 operated due to blast of B-ph CT of GT- 3. Phase to earth faulttripped due R-N fault, Z-1, Phase to earth faultr-n directional earth fault. tripped due to R phase Earth fault at 55.3 KM from Patran end Bad weather. R- N Phase Bad weather. Bad weather. bad weather. LBB, Bus bar protection of Bus-2 operated at Anta. LBB, Bus bar protection of Bus-2 operated at Anta. Phase to earth faultdue to Power Swing Block LBB, Bus bar protection of Bus-2 operated at Anta. Status received from site

31 Jind(PG)- Kurukshetra(PG) 2 Aligarh 765(PG)- Jhatikara(PG) Baghpat(PG)- Dehradun(PG) Meerut-Koteshwar Pool 1 Abdullapur(PG)- Dehradun(PG) 2 Koteshwar Pool (PG)-Tehri(THDC) 2 Ataur(UP)- Muzaffarnagar(UP) Alaknanda HEP - Muzaffarnagar - 2 Muzaffarnagar- Vishnuprayag 1 Muzaffarnagar(UP)- Roorkee(PG) Bareilly II (PG) - Kashipur (UTT) - 1 Muzaffarnagar 315 MVA 2 Muzaffarnagar 315 MVA 1 Muzaffarnagar 315 MVA 3 Muzaffarnagar 400 kv Bus 1 Muzaffarnagar 400 kv Bus 2 Ballabgarh(PG)- Bamnauli(DTL) 2 Ballabgarh(PG)- Bamnauli(DTL) 1 Bhiwadi-Neemrana 2 Line 400 kv PGCIL 2/5/ :55 2/5/ :26 - Line 765 kv PGCIL 2/5/ :39 * * NA Line 400 kv PGCIL 2/5/ :04 2/5/ :10 - Line 400 kv PGCIL 2/5/ :20 2/5/ :39 - Line 400 kv PGCIL 2/5/ :32 2/5/ :46 - Line 400 kv PGCIL 2/5/ :40 2/5/ :55 - Line 400 kv UPPTCL 2/5/ :58 2/5/ :11 - Line 400 kv UPPTCL 2/5/ :58 2/5/ :27 - Line 400 kv UPPTCL 2/5/ :58 2/5/ :37 - Line 400 kv UPPTCL 2/5/ :58 2/5/ :27 - Line 400 kv PGCIL 2/5/ :58 2/5/ :22-400/ 220 kv 400/ 220 kv 400/ 220 kv UPPTCL 2/5/ :58 2/5/ :31 - UPPTCL 2/5/ :58 2/5/ :29 - UPPTCL 2/5/ :58 2/5/ :49 - BUS 400 kv UPPTCL 2/5/ :58 * * NA BUS 400 kv UPPTCL 2/5/ :58 * * NA Line 400 kv DTL 2/5/ :23 2/5/ :45 - Line 400 kv DTL 2/5/ :23 2/5/ :46 - Line 400 kv PGCIL 2/5/ :11 2/5/ :17 - Phase to earth faultb-n, from Kurkshetra. E/S/D to attend the hanging jumper at tower no bad weather. Phase to earth faultdue to Bad Weather Phase to earth faultr-n Phase to earth faultdue to Bad Weather Manually tripped due to sparking observed in switchyard. Manually tripped due to sparking observed in switchyard. B-Phase CB of Muzaffarnagar- Vishnuprayag burst at Muzaffarnagar end. Manually tripped due to sparking observed in switchyard. E/S/D availed due to sparking observed in R- Phase isolator at Kashipur end. Manually tripped due to sparking observed in switchyard. Manually tripped due to sparking observed in switchyard. Manually tripped due to sparking observed in switchyard. Manually tripped due to sparking observed in switchyard. Manually tripped due to sparking observed in switchyard. bad weather. bad weather Tripped on R-N fault, 48.5KM

32 34 Bassi-Kotputli Line 400 kv PGCIL 2/5/ :13 2/5/ : Bareilly(PG)- Moradabad(UP) 1 Alwar II-Hindaun II - 1 Heerapura-Hindaun II Gwalior (PG) - Phagi (RVPNL) - 1 Ballabgarh-Mainpuri 1 Line 400 kv PGCIL 2/5/ :33 2/5/ :33 - Line 400 kv RRVPNL 2/5/ :49 2/5/ :33 - Line 400 kv RRVPNL 2/5/ :50 * * NA Line 765 kv PGCIL 2/5/ :07 2/5/ :27 - Line 400 kv PGCIL 2/5/ :26 2/5/ :29-40 Agra-Gwalior -2 Line 765 kv PGCIL 2/5/ :32 * * Still out 41 Agra-Gwalior -1 Line 765 kv PGCIL 2/5/ :32 * * Still out Agra-Fatehpur ckt- 1 Agra-Fatehpur ckt- 2 Line 765 kv PGCIL 2/5/ :32 * * Still out Line 765 kv PGCIL 2/5/ :32 * * Still out 44 Agra-Aligarh ckt Line 765 kv PGCIL 2/5/ :32 * * Still out MVA -1 at Agra 1500MVA -2 at Agra Agra(PG)-Agra(UP) 2 Agra - Biswanath Cherialli line -2 Auraiya(NTPC)- Mahgaon(PG) Agra(UP)- Fatehabad 765 (UP) 2 Ajmer II(RVPNL)- Phagi(RVPNL) 765/ 400 kv 765/ 400 kv PGCIL 2/5/ :32 Still out PGCIL 2/5/ :32 Still out Line 765 kv PGCIL 2/5/ :32 2/5/ :13 - Line 800 kv HVDC from Bhiwadi end. bad weather Phase to earth fault. Tripped on B-N fault, Distance 79KM from Hindaun end. Manually tripped due to sparking observed in R- Phase isolator at Hindaun end. Tripped on R-N fault. Tripped on R-N fault Phase to earth faulty-n, 114km & 6.89kA Phase to earth faulty-n, 107km & 5.6kA from Gwalior end. Tripped on R-N fault PGCIL 2/5/ :35 * * NA HVDC line fault Line 220 kv PGCIL 2/5/ :47 * * NA Line 400 kv PGCIL 2/5/ :48 2/5/ :48 - Line 400 kv RRVPNL 2/5/ :50 * * NA Phase to phase faultb-c, 174km from Auraiya end. Tripped on R-N fault problem in CVT. B phase WT damaged R&B phase WT (Wave Trap) damaged and around 8nos of towers collapsed B-ph BPI & CVT Bus Pipe dislocated Reported four tower damaged at location no- 15,16,17 & 18c Tripped due to bad weather, as reported tower collapse near Agra end

33 2(RRVPNL) Fatehabad 765(UP)- Lalitpur TPS(LPGCL) 2 Fatehpur 315 MVA MVA -1 at Fatehabad Mainpuri(PG)- Neebkarori(UP) 1 Aligarh(UP)- Mainpuri 765(UP) 2 Aligarh 765(PG)- Orai 765(PG) 1 Mainpuri(PG)- Neebkarori(UP) 2 Champa(WR) - Kurukshetra(NR) line -2 Line 765 kv UPPTCL 2/5/ :07 3/5/2018 1:00-400/ 220 kv 765/ 400kV PGCIL 2/5/ :07 3/5/2018 0:46 - UPPTCL 2/5/ :09 3/5/2018 0:46 Line 220 kv UPPTCL 2/5/ :05 * * NA Line 400 kv UPPTCL 2/5/ :06 2/5/ :46 - Line 765 kv PGCIL 2/5/ :12 2/5/ :52 - Line 220 kv UPPTCL 2/5/ :15 * * NA Line 800 kv HVDC PGCIL 2/5/ :17 3/5/2018 0:05-60 Agra-Kanpur Line 400 kv PGCIL 2/5/ :23 * * NA Aligarh 765(PG)- Orai 765(PG) 2 Orai 400(UP)-Orai 765(PG) 2 Orai 765(PG) 1000 MVA 1 Line 765 kv PGCIL 2/5/ :39 2/5/ :22 - Line 400 kv PGCIL 2/5/ :39 3/5/2018 7:50-765/ 400 kv PGCIL 2/5/ :48 2/5/ :33-64 Bhilwara-Chhabra 1 Line 400 kv RRVPNL 2/5/ :40 3/5/2018 1:02-65 Ajmer II(RVPNL)- Bhilwara 400(RVPNL) 1 Line 400 kv RRVPNL 2/5/ :40 3/5/2018 6:27 66 Parichha-Mainpuri 1 Line 400 kv UPPTCL 2/5/ :53 Still out 67 Fatehpur-Mainpuri 1 Line 400 kv PGCIL 3/5/2018 0:17 3/5/2018 0:39-68 Amritsar-Parb-pol 1 Line 400 kv PGCIL 3/5/2018 0:25 * * NA. 69 Dhanonda-Jhajjar CLP-1 Line 400 kv HVPNL 3/5/2018 1:21 3/5/2018 6:16-70 Meerut - Moga Line 765 kv PGCIL 3/5/2018 1:25 * * NA Bara TPS(UP)-Meza TPS(UP) 2 Lucknow(UP)- Singrauli(NTPC) Gorakhpur(PG)- Muzaffarpur(PG) 2 Allahabad(PG) - Kanpur New(PG) 2 Allahabad Rewa Road(400kV) - Banda(400kV) 1 bad weather bad weather Tripped on B-N fault, 2.25KM from Neebkarori end. Phase to earth fault. problem in guage of CB. Tripped on B-N fault, 2.27KM from Neebkarori end. Due to bad weather, details awaited. Phase to earth faulttripped on B-N Fault. Tripped on R-N fault, 215KM from Aligarh end. Due to bad weather Tripped on oil surge relay operated. LBB Optd at Bhilwara end LBB Optd at Bhilwara end Charging attempt failed Tripped on R-N fault Phase to earth faultr-n, 7km from CLP end. Line 400 kv UPPTCL 3/5/2018 1:33 * * NA Over voltage. Line 400 kv PGCIL 3/5/2018 1:33 3/5/2018 3:08 - Line 400 kv PLINK 3/5/2018 1:34 * * NA Line 400 kv PGCIL 3/5/2018 1:36 3/5/2018 2:52 - Line 400 kv UPPTCL 3/5/2018 1:38 * * NA Tripped on R-N fault Tripped on R- N fault Tripped on B-N fault, Tripped on B-N fault, KM from Banda end. As reported by CPCC, Tower bend observed.

34 Kanpur New- Varanasi ckt-2 Gorakhpur(PG)- Motihari(DMTCL) 1 Vindhyachal HVDC BtB Block 1 Obra TPS(UPPTCL) 315 MVA 1 Anpara B-Anpara D 1 Allahabad Rewa Road(400kV) - Obra Fatehpur-Varanasi 1 Chamera pool- Jalandhar 2 Chamba 315 MVA 2 Bareilly(UP)- Dhauliganga(NHPC) Dhauliganga(NHPC)- Pithorgarh(PG) Pithorgarh 100 MVA -1 Pithorgarh 100 MVA -2 Kanpur New- Varanasi ckt-1 Allahabad Rewa Road(400kV)(UP)- Meza TPS(UP) 2 Allahabad Rewa Road(400kV) - Panki Line 765 kv PGCIL 3/5/2018 1:41 * * NA Line 400 kv PGCIL 3/5/2018 2:39 3/5/2018 3:39 - HVDV Station 500 kv HVDC 400/ 220 kv PGCIL 3/5/2018 2:56 3/5/2018 7:44 - Tripped on R-N fault, 22.1KM from Kanpur end. Tripped from Motihari end only. DC over current protection operated UPPTCL 3/5/2018 3:05 * * NA Details awaited. Line 400 kv UPPTCL 3/5/2018 3:14 * * NA Phase to earth faultb-n. Line 400 kv UPPTCL 3/5/2018 3:20 * * NA Over voltage. Line 765 kv PGCIL 3/5/2018 4:04 3/5/2018 4:32 - Line 400 kv PGCIL 3/5/2018 4:20 * * NA 400/ 220 kv PGCIL 3/5/2018 4:20 3/5/2018 5:48 - Line 220 kv PGCIL 3/5/2018 5:05 * * NA Line 220 kv PGCIL 3/5/2018 5:05 * * NA 220/ 132 kv 220/ 132 kv Bus bar protection operatedtripped on R-N fault, 17.79KM from Varanasi end, F.C=10.1KA Bus bar protection operatedbus-2 at Chamba/ line faulty Bus bar protection operatedbus-2 at Chamba Tripped on High voltage. Tripped on High voltage. PGCIL 3/5/2018 5:22 * * NA Over fluxing. PGCIL 3/5/2018 5:22 * * NA Over fluxing. Line 765 kv PGCIL 3/5/2018 9:00 * * Line 400 kv UPPTCL 3/5/ :30 * * NA Line 400 kv UPPTCL 3/5/ :30 * * NA Reported One tower collapsed near Ghatampur. As this is a double circuit tower, circuit-1 is also opened on emergency basis. Over voltagetripped Over voltagetripped Reported One tower collapsed near Ghatampur. As this is a double circuit tower, circuit-1 is also opened on emergency basis.

35 Annex-V List of lines manually open, to control high voltage: Line manually opened on high voltage S.No Element Name Type Voltage Level Owner Outage Date Time 1 Agra-Fatehpur Line 765 kv PGCIL 2/5/2018 7:48 Remarks 2 Meerut - Moga Line 765 kv PGCIL 2/5/ :49 3 Agra-Fatehpur 2 Line 765 kv PGCIL 2/5/ :33 4 Allahabad Rewa Road(400kV)(UP)-Meza TPS(UP) 1 Line 400 kv UPPTCL :01 5 Allahabad(PG)-Meja TPS(UP) 1 Line 400 kv PGCIL :02 6 Ratangarh (RVPNL) - Sikar (PG) - 1 Line 400 kv PGCIL :57 7 Agra(PG)-Auraiya(NTPC) 2 Line 400 kv PGCIL :15 8 Agra-Sikar 1 Line 400 kv PGCIL 2/5/2018 6:52 9 Ballabgarh-Mainpuri 1 Line 400 kv PGCIL 2/5/2018 7:52 10 Fatehpur-Mainpuri 2 Line 400 kv PGCIL 2/5/2018 7:52 11 Jalandhar-Kurukshetra(PG) 1 Line 400 kv PGCIL 2/5/ :42 12 Agra-Bhiwadi 2 Line 400 kv PGCIL 2/5/ :55 13 Fatehpur-Mainpuri 2 Line 400 kv PGCIL 2/5/ :56 14 Meerut(PG)-Muzaffarnagar(UP) Line 400 kv PGCIL 2/5/ :58 15 Kurukshetra(PG)-Malerkotla(PG) 2 Line 400 kv NRSS31B 2/5/ :03 16 Bhiwadi-Neemrana 1 Line 400 kv PGCIL 2/5/ :17 17 Agra-Jaipur South-1 Line 400 kv PGCIL 2/5/ :18 18 Bhiwadi-Hisar Line 400 kv PGCIL 2/5/ :19 19 Fatehpur(PG)-Unchahar TPS(NTPC) 1 Line 400 kv PGCIL 2/5/ :27 20 Ratangarh (RVPNL) - Sikar (PG) - 1 Line 400 kv PGCIL 2/5/ :28 21 Babai 400 (RVPNL)- Neemrana (PG) 1 Line 400 kv PGCIL 2/5/ :53 22 Bikaner (RVPNL) - Sikar (PG) - 2 Line 400 kv RRVPNL 2/5/ :55 23 Jodhpur II-Merta 2 Line 400 kv RRVPNL 2/5/ :59 24 Akal-Jodhpur II Line 400 kv RRVPNL 2/5/ :00 25 Merta-Ratangarh Line 400 kv RRVPNL 2/5/ :10 26 Agra-Sikar 2 Line 400 kv PGCIL 2/5/ :27 27 Bhadla(RVPNL)-Bikaner(RVPNL) 1 Line 400 kv RRVPNL 2/5/ :44 28 Bhadla(RVPNL)-Bikaner(RVPNL) 1 Line 400 kv RRVPNL 2/5/ :44 29 Nallagarh(PG)-Parbati Pool(PG) Line 400 kv PKTCL 3/5/2018 0:26 30 Aligarh(UP)-Sikandrabad 400(UP) 2 Line 400 kv UPPTCL 3/5/2018 0:30 31 Agra-Jaipur South-2 Line 400 kv PGCIL 3/5/2018 0:43 32 Ballabgarh-Mainpuri 1 Line 400 kv PGCIL 3/5/2018 0:50 33 Jind(PG)-Kurukshetra(PG) 2 Line 400 kv PGCIL 3/5/2018 1:28 34 Agra(PG)-Auraiya(NTPC) 1 Line 400 kv PGCIL 3/5/2018 1:33 35 Agra(PG)-Auraiya(NTPC) 2 Line 400 kv PGCIL 3/5/2018 1:48 36 Ballabgarh-Kanpur 3 Line 400 kv PGCIL 3/5/2018 5:48

36 Northern Regional Thermal Generation Annexure-VI Generation backing down started at 14:43hrs

37 Annexe III (Status of Northern Region Transmission elements which tripped on thunderstorm during 2nd 3rd May 2018) S.No Element Name Voltage Level Owner Outage Revival Reason / Remarks Date Time Date Time 1 Agra Biswanath Cherialli line kv HVDC PGCIL 2/5/ :35 * * Reported Three tower collapsed. 2 Agra Biswanath Cherialli line kv HVDC PGCIL 2/5/ :35 * * Reported Threeo tower collapsed. 3 Champa(WR) Kurukshetra(NR) line kv HVDC PGCIL 2/5/ :17 3/5/2018 0:05 Tripped during thunder storm, flag details awaited. 4 Gwalior (PG) Phagi (RVPNL) kv PGCIL 2/5/ :07 2/5/ :27 Tripped on R N fault. 5 Agra Gwalior kv PGCIL 2/5/ :32 * * Phase to earth faulty N, 107km & 5.6kA from Gwalior end./ 9 Nos tower collapse. 6 Agra Gwalior kv PGCIL 2/5/ :32 5/5/2018 2:38 Phase to earth faulty N, 114km & 6.89kA/ Switchyard equipment damage at Agra. 7 Agra Fatehpur kv PGCIL 2/5/ :33 * * Wave Trap/ LA/CVT found dislocated at Agra s/yard 8 Agra(PG) Aligarh 765(PG) 765 kv PGCIL 2/5/ :33 * * Phase to earth faulty N, 0.4 km, 6.6 KA/ 4 nos. tower damaged. 9 Agra Fatehpur 765 kv PGCIL 2/5/ :34 * * Phase to earth faultr Y,.6 KM, 4.6 KA, HVDC CONDUCTOR FELL ON THIS LINE. Tripped during thunder storm, flag details 10 Fatehabad 765(UP) Lalitpur TPS(LPGC765 kv UPPTCL 2/5/ :07 3/5/2018 1:00 awaited. 11 Aligarh 765(PG) Orai 765(PG) kv PGCIL 2/5/ :12 2/5/ :52 problem in guage of CB. 12 Aligarh 765(PG) Orai 765(PG) kv PGCIL 2/5/ :39 2/5/ :22 Tripped on R N fault, 215KM from Aligarh end. 13 Bara TPS 1500 MVA 1 765/400 kv UPPTCL 2/4/ :28 * * E/S/D due to Buccholz Alarm in Y phase R Ph, Differential 6.1 KA. Charged from Agra 1500 MVA 1 765/400 kv PGCIL 2/5/ :33 4/5/ :03 Kv side.

38 S.No Element Name Voltage Level Owner Outage Revival Reason / Remarks Y Ph, Differential, 8.8 KA, Charged from 15 Agra 1500 MVA 2 765/400 kv PGCIL 2/5/ :34 4/5/ : KV Side 16 Orai 765(PG) 1000 MVA 1 765/400 kv PGCIL 2/5/ :49 2/5/ :39 Tripped on oil surge relay operated. 17 Agra(PG) 3*80 MVAR( at 765kv ) B/R 765 kv PGCIL 2/5/ :34 * * TEED Protection, R Ph 18 Agra(PG) 3*80 MVAR( at 765kv ) B/R 765 kv PGCIL 2/5/ :34 * * TEED Protection, R Ph Y phase Isolator of Main CB hand tripped 19 Bhiwani Jind kv PGCIL 2/5/2018 5:30 2/5/2018 6:05 due to heavy sparking. 20 Bhiwani Jind kv PGCIL 2/5/2018 7:23 2/5/ :09 E/S/D.Y phase Isolator of Main CB hand tripped due to heavy sparking. 21 Makhu Nakodar kv PSTCL 2/5/ :36 2/5/ :20 Phase to earth faulttripped due R N fault, Z 1, 22 Dhuri (400kV) Rajpura (400kV) kv PSTCL 2/5/ :36 2/5/ :11 Phase to earth faultr N 23 Patiala(PG) Patran(PTCL) kv PGCIL 2/5/ :03 2/5/ :02 tripped due to R phase Earth fault at 55.3 KM from Patran end 24 Jalandhar Kurukshetra(PG) kv PGCIL 2/5/ :08 2/5/ :00 Bad weather. R N Phase 25 Anta RS Kawai(Adani) kv RRVPNL 2/5/ :40 2/5/ :30 LBB, Bus bar protection of Bus 2 operated at Anta. 26 Anta RS Chabra kv RRVPNL 2/5/ :40 2/5/ :25 LBB, Bus bar protection of Bus 2 operated at Anta. Phase to earth faultdue to Power Swing 27 Bhilwara 400(RVPNL) Chabra(RVPNL) 400 kv RRVPNL 2/5/ :40 3/5/2018 0:00 Block LBB, Bus bar protection of 28 Anta RS Kawai(Adani) kv RRVPNL 2/5/ :40 2/5/ :02 Bus 2 operated at Anta. 29 Jind(PG) Kurukshetra(PG) kv PGCIL 2/5/ :55 2/5/ :26 Phase to earth faultb N, from Kurkshetra. 30 Meerut Koteshwar Pool kv PGCIL 2/5/ :20 2/5/ :39 Phase to earth faultdue to Bad Weather 31 Abdullapur(PG) Dehradun(PG) kv PGCIL 2/5/ :32 2/5/ :46 Phase to earth faultr N 32 Koteshwar Pool (PG) Tehri(THDC) kv PGCIL 2/5/ :40 2/5/ :55 Phase to earth faultdue to Bad Weather 33 Alaknanda HEP Muzaffarnagar kv UPPTCL 2/5/ :58 2/5/ :27 Manually tripped due to sparking observed in switchyard. 34 Ataur(UP) Muzaffarnagar(UP) 400 kv UPPTCL 2/5/ :58 2/5/ :11 Manually tripped due to sparking observed in switchyard.

39 S.No Element Name Voltage Level Owner Outage Revival Reason / Remarks 35 Muzaffarnagar Vishnuprayag kv UPPTCL 2/5/ :58 3/5/ :04 Y ph CB blasted 36 Muzaffarnagar(UP) Roorkee(PG) 400 kv UPPTCL 2/5/ :58 2/5/ :27 Manually tripped due to sparking observed in switchyard. 37 Muzaffarnagar Vishnuprayag kv UPPTCL 2/5/ :58 2/5/ :37 B Phase CB of Muzaffarnagar Vishnuprayag burst at Muzaffarnagar end. 38 Bareilly II (PG) Kashipur (UTT) kv PGCIL 2/5/ :58 2/5/ :22 E/S/D availed due to sparking observed in R Phase isolator at Kashipur end. 39 Ballabgarh(PG) Bamnauli(DTL) kv DTL 2/5/ :20 2/5/ :42 bad weather. 40 Bhiwadi Neemrana kv PGCIL 2/5/ :11 2/5/ :17 Tripped on R N fault, 48.5KM from Bhiwadi end. 41 Bassi Kotputli 400 kv PGCIL 2/5/ :13 2/5/ :58 bad weather 42 Bareilly(PG) Moradabad(UP) kv PGCIL 2/5/ :33 2/5/ :33 Phase to earth fault. 43 Alwar II Hindaun II kv RRVPNL 2/5/ :49 2/5/ :33 Tripped on B N fault, Distance 79KM from Hindaun end. 44 Heerapura Hindaun II 400 kv RRVPNL 2/5/ :50 2/5/ :58 Manually tripped due to sparking observed in R Phase isolator at Hindaun end. 45 Ballabgarh Mainpuri kv PGCIL 2/5/ :26 2/5/ :29 Tripped on R N fault 46 Agra(PG) Agra(UP) kv PGCIL 2/5/ :32 2/5/ :13 Tripped on R N fault 47 Agra(UP) Fatehabad 765 (UP) kv PGCIL 2/5/ :48 2/5/ :48 Tripped on R N fault 48 Aligarh(UP) Mainpuri 765(UP) kv UPPTCL 2/5/ :06 2/5/ :46 Phase to earth fault. 49 Agra Kanpur 400 kv PGCIL 2/5/ :23 * * Phase to earth faulttripped on B N Fault. One tower partially damaged. 50 Orai 400(UP) Orai 765(PG) kv PGCIL 2/5/ :38 3/5/2018 7:31 Tripped during thunder storm, flag details awaited. 51 Orai 400(UP) Orai 765(PG) kv PGCIL 2/5/ :39 3/5/2018 1:05 Tripped during thunder storm, flag details awaited. 52 Bhilwara Chhabra kv RRVPNL 2/5/ :40 3/5/2018 1:02 LBB Optd at Bhilwara end 53 Ajmer II(RVPNL) Bhilwara 400(RVPNL 400 kv RRVPNL 2/5/ :40 3/5/2018 6:27 LBB Optd at Bhilwara end

40 S.No Element Name Voltage Level Owner Outage Revival Reason / Remarks 54 Dhuri(400) 500 MVA 3 400/220 kv PSTCL 2/5/ :36 2/5/ :52 directional earth fault. 55 Patiala 315 MVA 1 400/220 kv PGCIL 2/5/ :17 3/5/2018 0:27 Tripped during thunder storm, flag details awaited. 56 Rajpura (400kV) 500 MVA 3 400/220 kv PGCIL 2/5/ :23 2/5/ :04 bad weather. 57 Fatehpur 315 MVA 1 400/220 kv PGCIL 2/5/ :07 3/5/2018 0:46 storm, details awaited. 58 Patiala 125 MVAR B/R 400 kv PGCIL 2/5/ :16 3/5/2018 0:56 Tripped during thunder storm, flag details awaited. 59 Mandola(PG) Narela(DTL) kv DTL 2/5/2018 9:14 2/5/ :20 ESD for replacement of porcelain insulator with polymer 60 Bairasuil(NHPC) Pong(BBMB) 220 kv PGCIL 2/5/ :13 2/5/ :29 61 Jassor(HP) Pong(BBMB) 220 kv PGCIL 2/5/ :13 2/5/ :50 62 Auraiya(NTPC) Mahgaon(PG) 220 kv PGCIL 2/5/ :47 2/5/ :30 63 Mainpuri(PG) Neebkarori(UP) kv UPPTCL 2/5/ :05 2/5/ :16 64 Mainpuri(PG) Neebkarori(UP) kv UPPTCL 2/5/ :15 2/5/ :16 65 Kanpur New Varanasi kv PGCIL 3/5/2018 1:41 * * 66 Fatehpur Varanasi kv PGCIL 3/5/2018 4:04 3/5/2018 4:32 Bus bar protection of Bus 1 operated due to blast of B ph CT of GT 3. Bus bar protection of Bus 1 operated due to blast of B ph CT of GT 3. Tripped from Jassor end. Phase to phase faultb C, 174km from Auraiya end. Tripped on B N fault, 2.25KM from Neebkarori end. Tripped on B N fault, 2.27KM from Neebkarori end. Tripped on R N fault, 22.1KM from Kanpur end./ 1 No Tower collpase. Bus bar protection operatedtripped on R N fault, 17.79KM from Varanasi end, F.C=10.1KA

41 S.No Element Name Voltage Level Owner Outage Revival Reason / Remarks Being a double circuit tower, due to tower collapse, ckt 1 is opened on emergency 67 Kanpur New Varanasi kv PGCIL 3/5/2018 9:00 * * basis 68 Fatehpur Mainpuri kv PGCIL 3/5/2018 0:17 3/5/2018 0:39 Tripped on R N fault 69 Dhanonda Jhajjar CLP kv HVPNL 3/5/2018 1:21 3/5/2018 6:16 Phase to earth faultr N, 7km from CLP end. 70 Lucknow(UP) Singrauli(NTPC) 400 kv PGCIL 3/5/2018 1:33 3/5/2018 3:08 Tripped on R N fault 71 Gorakhpur(PG) Muzaffarpur(PG) kv PLINK 3/5/2018 1:34 3/5/ :07 Tripped on R N fault 72 Allahabad(PG) Kanpur New(PG) kv PGCIL 3/5/2018 1:36 3/5/2018 2:52 Tripped on B N fault, Tripped on B N fault, KM from Banda end. 73 Allahabad Rewa Road(400kV) Banda400 kv UPPTCL 3/5/2018 1:38 * * 74 Gorakhpur(PG) Motihari(DMTCL) kv PGCIL 3/5/2018 2:39 3/5/2018 3:39 Tripped from Motihari end only. 75 Pithorgarh 100 MVA 1 220/132 kv PGCIL 3/5/2018 5:22 3/5/ :32 Over fluxing.