122 lgbr final jan 08 to mar 08 22.01.08wrpc.nic.in/occ/390occ_minute.pdf · 2008. 8. 26. ·...
TRANSCRIPT
Government of India
Central Electricity Authority
Western Regional Power Committee -3, , ( ), - 400 093
F-3, MIDC Area, Andheri (East), Mumbai - 400 093
-ISO : 9001-2000
Phone: 022- 28209506; 28200194; 28200195;28200196 Fax : 022 – 28370193
Website : www.wrpc.nic.in E-mail : [email protected]
: / ./ - /2008-09 / 8402 22.08.2008
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:- . . . , 390
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12.08.2008 , 390
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390TH OCCM MINUTES
2
MINUTES OF 390TH MEETING OF OPERATION & COORDINATION SUB-COMMITTEE HELD ON 12TH AUGUST 2008 AT WRPC, MUMBAI
The 390th meeting of Operation & Co-ordination Sub-Committee of WRPC was held on 12th
August 2008 at WRPC office, Mumbai. The list of participants is enclosed at Annex-I.
Shri P. Patel, Member Secretary, WRPC welcomed the members and participants of 390th
OCCM. He welcomed new OCC member, Shri M.G. Raoot, who had recently taken over as General Manager, WRLDC. He recalled his earlier association with the then WREB and said that his past experience in RLDCs would be a valuable contribution to the WRPC forum. While highlighting power situation in Western Region during July 2008, he said that the scanty rainfall and the continued dry spells had been resulting in low frequency profile. Particularly during 3rd/4th week of July 2008, the frequency remained below permissible limit for long periods. He said that mainly the reduced availability of power and hot weather in the absence of rains were the factors that were attributable to prolonged overdrawls by some of the constituents in large quantum resulting low frequency profile. Although the maximum peak unrestricted demand for the month had dropped by 1274 MW from that in June 2008, the peak availability was less by around 2244 MW resulting higher quantum of peak shortage of 8375 MW as compared to 7405 MW in June 2008. There was net inter-regional export of 174.12 MUs by WR constituents against net inter-regional WR export schedule of 219.499 MUs during July 2008. The availability was maximized even as outage of number of generating units in the region, which was earlier ear-marked for scheduled annual maintenance in the monsoon season was deferred till improvement in the demand takes place. He said that the overdrawl by some of the WR constituents at low frequency also persisted for longer durations. Western Region had on the whole overdrawn around 65 MUs from the interconnected grid during the subject month. He intimated that 400 kV Raipur-Sipat D/c under WRSS-I was put into regular operation w.e.f. 1st August 2008.
Thereafter, the agenda items were taken up for discussion.
ITEM No. 1: CONFIRMATION OF THE MINUTES
Minutes of 390th meeting of Operation & Coordination Sub-Committee held on 10th July 2008 at Kevadia (Gujarat) were forwarded vide letter No. WRPC/OPN/OCC-Minutes/2008-09/6422 dated 21.07.2008. No comments were received.
The minutes of 390th OCCM of WRPC were, therefore confirmed by the sub-Committee.
ITEM NO.2: REVIEW OF SYSTEM OPERATION DURING THE MONTH OF JULY 2008
2.1 Frequency Particulars The detailed frequency particulars are enclosed at Annex-2.1. As per the data furnished by
WRLDC, the frequency remained between 49.0 to 50.5 Hz for 86.47 % of time in July 2008 compared to 93.30 % of time in June 2008 and average frequency during July 2008 was 49.31 Hz compared to that of 49.56 Hz in June 2008.
The Sub-Committee noted as above.
390TH OCCM MINUTES
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2.2 Operational Matters 2.2.1 Operational Discipline
Instances of significant violation of IEGC during the month of July 2008 as furnished by WRLDC are enclosed at Annex- 2.2 (A).
DGM (OS), WRLDC indicated that during the period 14.07.2008 to 23.07.2008 overdrawls at low frequency by Gujarat, MP, Maharashtra, DNH were prevailing in the range of 70 to 290 MW, 129 to 298 MW, 100 to 731 MW, 95 to174 MW respectively. He stated that low frequency operation continued to prevail due to low availability and dry spells particularly during the period 14.7.2008 to 26.7.2008. He stated that on 17th July 2008, frequency remained below 49 Hz for about 31% of time and it dipped below 48.8 Hz 44 times. On this day Gujarat had overdrawn to extent of 6 MUs, Maharashtra 5.2 MUs, DNH by 3 MUs, DD by 1 MU. Western Region as a whole had overdrawn from the interconnected grid by 11 MUs. He intimated that on 22.7.2008, at 0859 Hrs, the system frequency dipped from 49.02 Hz to 48.71 Hz, as a result of tripping of entire Vindhyachal STPS of NTPC, due to bus fault at the station bringing a sudden loss of 3000 MW generation support to the grid from the station. (The tripping and the related details were discussed under item 3.3.2.2 herein). While only 2000 MW of the capacity could be brought up, the unit nos. 8 & 9 could not be restored earlier, on account of prolonged forced shut down conditions after the above incident. Therefore, during the period from 14.7.2008 to 26.7.2008, system frequency remained below 49 Hz for 7-49% of the time (least minimum system frequency was 48.60 Hz on 23.7.2008 and frequency was below 49 Hz for 48.82% of time on 24.7.2008).
The sub-Committee observed that during the subject month viz. July 2008, the peak-shortfall in each of the above States/UTs was of the order of 1550 to 2150 MW, 700 to 1050 MW, 5850 to 6800 MW and 35 to 140 MW respectively and the peak shortfall of the region was of the order of 8400 to 9150 MW. The details of recommended load shedding Vs actual load shedding carried out by WR constituents during July 2008 as furnished by WRLDC were noted by the sub-Committee and are enclosed at Annex-2.2 (B).
DGM (OS), WRLDC further intimated that regulatory measures were also taken by opening EHV lines to the overdrawing states viz. Gujarat - 2 times, Maharashtra- 2 times, Chhattisgarh - 3 times and once to UTs of DD/DNH during the month to control overdrawls. He said that utilisation of capacity availability of Kawas GPS of NTPC on liquid fuel was of the order of 40% only as the overdrawing utilities did not requisition Naphtha power.
CE (LD), MSETCL intimated that even as low frequency persisted, wide-spread load shedding measures had to be implemented in the State during poor frequency regimes. At times, the overdrawls by Maharashtra State continued on account of poor availability of generation caused by receipt of wet coal by major thermal stations at Chandrapur and Bhusawal for the capacity available on bar which resulted in low generation. Capacity availability at RGPPL, Dabhol was also low due to forced outage of Block III since June 2008 and low availability of RLNG.
Gujarat representative stated that the demand was unexpectedly high due to delayed rains and continuance of high load conditions (particularly the agricultural loads) in Gujarat State. Despite having taken all possible measures for load shedding, the overdrawl persisted for longer duration. Further, full requisition of liquid power of Kawas could not be taken owing to very high variable charges of energy with Naphtha fuel. He indicated that higher overdrawls by UTs of DD & DNH were also prevailing continuously which was not controlled by them on the same scale as by other States of the region.
390TH OCCM MINUTES
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GM, WRLDC intimated that as UTs of DD & DNH were facing huge deficits and had overdrawn to the extent of 50 MW and 150 MW, they were advised to requisition Kawas liquid power of NTPC. Accordingly, Kawas liquid power was scheduled to DD & DNH ranging from 3 to 36 MW & 16-98 MW respectively during entire July 2008 month. On 21st July 2008, DD had requisitioned 0.24 MUs (8-11 MW) and DNH 1.045 (34-48 MW) respectively in addition to regulation of power to the UTs by opening 220 kV Vapi-Kharadpada line on that day as an emergency regulatory measure taken by WRLDC. He said that only corrective/regulatory measures taken for UTs of DD/DNH did not improve system frequency as overdrawl by other constituents also continued to prevail. Therefore, to control overdrawls and improve frequency, it is essential that all the concerned beneficiaries take the required and timely load shedding measures as stable operation of the N-E-W interconnected grid is of paramount interest.
Member Secretary, WRPC stated that the load regulatory measures required to be taken by each of WR constituents/utilities including the quantum of hourly load shedding are intimated to them by WRLDC in the real-time well in advance. These measures are advised by WRLDC, keeping in view overall scenario of the WR grid/interconnected N-E-W grid. It is mandatory for each of the regional utility to follow the WRLDC instructions in line with the provisions of IEGC in the interest of grid security. He therefore, requested all concerned utilities of the region to follow instructions/advise given by WRLDC in the real-time from time to time.
2.3.1 Voltage Profile
The sub-Committee noted the voltage profile at some of 400 kV sub-stations during the month of July 2008 as furnished by WRLDC, which is enclosed at Annex-2.3. It observed incidences of higher voltage profile during July 2008 at the following locations in WR grid: -
S.No. 400 kV Sub-station
Max. Voltage observed (kV)
Date of incidence
Min. voltage Observed (kV)
Date of incidence
1. Dhule 440 11&27.07.2008 - - 2. Itarsi 432 06&13.07.2008 - - 3. Karad 428 29.07.2008 - - 4. Asoj 427 13.07.2008 - - 5. Gwalior 430 13.07.2008 - - 6. Bina 433 11&15.07.2008 - - 7 Indore 424 13.07.2008 - - 8 Kasor 429 06.07.2008 - - 9 Jetpur 422 03.07.2008 - -
WRLDC representative intimated that 12 to 15 EHV lines were being opened daily to control high voltages incidents in the grid during July 2008. The SSP machines were also run in synchronous condenser mode to absorb higher MVAr during overvoltage conditions. In Maharashtra system, higher MVAr absorption was made at Chandrapur TPS and at Padghe HVDC station. MSETCL representative informed that even 400 kV Bableshwar-Dhule line tripped on high voltage causing constraints along East-West corridor in Maharashtra system. GM, WRLDC said that opening/tripping of many EHV lines to control high voltages in WR grid is, therefore, not a desirable feature as it would hamper grid security and unduly cause constraints in safe flow pattern of active power.
390TH OCCM MINUTES
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2.3.2 Status of completion of on going Schemes Commissioning of reactors being implemented by PGCIL / Other Agencies
The status work for providing additional reactors at the various locations in Western Region was discussed. The details of the progress made on the same were intimated as follows: -
S.No. 400 kV Substation Size (MVAR) Implementing agency
Expected commissioning date
1. Khandwa 1x125 PGCIL June 2010
2. Dhule 2x50 MSETCL March 2009
3. Indore 1x125 MPPTCL March 2010
4. Dehgam 1x125 PGCIL June 2010
5. Kasor 1x125 GETCO Tenders invited
6. Karad 1x80 MSETCL Dec 2008
7. Nardipur 1x80 GETCO Tenders invited
8. Padghe 1x80 (SCR) MSETCL Dec 2008
9. Khargar 1x80 (SCR)** MSETCL Mah would intimate
2.4.1 Status of completion of on going Transmission Schemes/ Reactors Commissioning being executed/implemented by POWERGRID/ Other Agencies
The progress on various ongoing transmission schemes for the current year was discussed. The updated status is as follows: -
Sl. No.
Name of the Line Target Completion date
Remarks
POWERGRID 1 400 kV Sipat-Raipur D/C July 2008 Put on commercial operation w.e.f
01.08.2008.
2. 2x315 MVA, 400/220 kV substation at Damoh Aug/Sept 2008 3. 400 kV Ranchi-Sipat D/c (under ATS of Kahalgaon Ph II with
40% series compensation) November 2008
2.4.2 U/F Relay Operation
During July 2008 the system frequency remained below 49.0 Hz for 13.5 % of the time. The frequency touched, 48.8 Hz 390 times. The sub-Committee noted the consolidated information about UFLS operations for July 2008 furnished by the WR constituents placed at Annexure-2.4.2.
Member Secretary, WRPC said that as per the decision of WRPC, the df/dt settings were to take effect from 1st July 2008. In 389th OCCM of WRPC, MPPTCL had confirmed that the revised settings had been implemented in M.P. w.e.f. 1.7.2008, while rest of the WR constituents viz. GETCO, MSETCL, CSEB and TPC had intimated that the implementation process was in progress. He requested them to intimate the current status. These constituents intimated that field offices were advised to implement the revised setting and the completion status was still awaited from the various sites.
The sub-Committee discussed the matter and emphasized the need to implement the revised df/dt settings at the earliest so as to ensure secured status of the entire interconnected N-E-W grid. After the
390TH OCCM MINUTES
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discussion, it was agreed that the completion of implementation of the revised setting of the existing df/dt relays at 49.9 Hz would be ensured and same would be confirmed by them to WRPC Secretariat latest by 31.8.2008.
2.4.3 Confirmation of Healthiness status of SERs/DRs equipment in the system.
PGCIL-WRTS-I, PGCIL-WRTS-II, MPPTCL, NTPC, CSEB, GETCO and MSETCL have furnished healthiness status of DRs/SERs equipment in their system vide letters dated 1.08.2008, 11.08.2008, 9.08.2008,11.08.2008,7.08.2008, 1.08.2008 and 2.08.2008 respectively.
NTPC, Vindhyachal TPS intimated that DR replacement for 400 kV Vindhyachal-Jabalpur ckts I & II and Vindhyachal-Korba ckt I is expected to be completed by March 2009. NTPC, Korba TPS intimated that there is no SEL facility for Korba-Vindhyachal-2 line at present. The same is to be provided PGCIL.
GETCO were requested to intimate the status on provision of time-synchronized availability of DRs/SELs at their sub-stations.
2.5 Power Cuts / Load Restrictions
The sub-committee noted the details of Power Cuts and Regulatory measures during July 2008 furnished by the Transmission Cos./SEBs, as per the enclosed Annex. 2.5.
2.6 Details of Generating Units under Forced outages
Details of generating units under forced outages during July 2008 were discussed. The details are given in Annex-2.6.
2.7 Tripping of 400 kV Nagda sub-station on 29.7.2008
WRLDC intimated about a tripping incident in WR grid that on 29.7.2008 at around 0330 hours, the 400/220 kV 315 MVA ICT-I at Nagda S/S in Madhya Pradesh had caught fire due to failure of 220 kV bushing of the ICT and all 400 kV lines and ICTs at the Nagda S/s had to be hand-tripped and 400 kV bus was made dead. In view of above, as 400 kV Bina-Nagda-Dehgam corridor was not available the scheduled outage of 400 kV Indore-Asoj line was deferred.
Upon query by Member Secretary, WRPC about detailed cause of the failure, MPPTCL representative stated that a Committee has been constituted headed by Shri S.K.Bajpai, ex-ED(Plg), MPPCTL to examine and look into the cause of the failure and the fire which resulted in damage of 400/220 kV ICT-I at Nagda S/s and suggest necessary remedial measures. Thereafter, report on the findings would be sent to WRPC.
2.8 Occurrence at Vindhyachal generating station on 22.7.2008
WRLDC informed that on 22.7.2008 at 0859 hours, due to bus fault at Vindhyachal triggered by fault in the 400 kV Vindhyachal-Jabalpur ckt IV breaker at Vindhyachal end, following generating units and lines had tripped:-
i) All running units (6x210+4x500) MW at Vindhyachal ii) 400 kV Vindhyachal-Jabalpur ckts 1,2,3,4 iii) 400 kV Vindhyachal-Korba 1 & 2
390TH OCCM MINUTES
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iv) 400 kV Vindhyachal HVDC back to back pole I & II v) 400 kV Vindhyachal-Itarsi 1 & 2 vi) 400 kV Vindhyachal ICT 400/132 kV 1& 2 vii) 400 kV Satna-Bina ckts 1,2,3,4
Western Region was meeting demand of 23370 MW prior to the occurrence. Generation loss of 3000 MW occurred and system frequency dipped from 49.02 Hz to 48.71 Hz. Total 1450 MW quantum of load shedding (Discrete + Trend) was obtained (with Chhattisgarh : 50 MW, Gujarat: 450 MW; Madhya Pradesh: 250 MW; Maharashtra: 700 MW). The restoration process commenced at 0920 hours and all tripped lines were restored by 1112 hours of 22.07.2008 while the generating units were restored by 0405 hours of 23.7.2008 except unit Nos 8 & 9.
WRLDC intimated that the sudden loss of 3000 MW generation in the interconnected grid resulted in frequency drop at faster rate of the order of 0.081 Hz/sec (measured under SCADA system) whereas df/dt observed by GETCO in Gujarat system was 0.22 Hz/sec (measured with 100 ms resolution). The total load relief of 1450 MW in the region with operation of AUFLS relays comprises relief with df/dt relay operation also. The constituents were requested to furnish break-up details of load relief under each of the df/dt relay and UFR operation to facilitate further analysis while reviewing the performance of df/dt relays operating under the recently revised settings, in the interconnected N-E-W grid.
NTPC representative from Vindhyachal STPS explained the details about initiation of the above incident. He intimated that at 0824 hours of 22.7.2008, ‘auto-reclose blocked’ indication appeared at the control room. Upon inspection in the 400 kV switchyard a bluish flame was observed in R-phase of 400 kV Vindhyachal-Jabalpur ckt IV circuit breaker (which was on Bus-I). Therefore, an attempt was made by the station engineers to trip the line manually but CGL make circuit breaker did not open. However, at Jabalpur end of the line the circuit breaker opened on receipt of ‘direct trip’. As the breaker at Vindhyachal end failed to open, the line was still carrying highly reactive current as the line reactor at Jabalpur end was in circuit. Therefore, it was decided by the station to offload Bus-I by transferring generating units 3 and 5 from Bus-I to Bus-II. Unit No. 5 was successfully transferred to Bus-II and the process to transfer Unit No. 2 started, but could not complete; as at 0859 hours all generating units at the station tripped and station became dead upon bursting of the above R-phase breaker of 400 kV Vindhyachal-Jabalpur ckt IV. At 0933 hours the start-up power for the station was restored by charging 400 Vindhyachal-Korba ckt I. The NTPC representative further intimated that no protection of the Vindhyachal-Jabalpur IV line had operated. Even LBB failed to operate. Further, ABB make RADSS relay provided for bus-bar protection also did not operate presumably due to highly resistive nature of the fault. He said that matter relating to cause of breaker failure and non-operation of RADSS relay has been taken up with respective manufacturers viz. M/s CGL and M/s ABB for examining and reverting back about remedial solutions. The sub-Committee observed that at the above station, in bus-bar differential protection scheme, the differential relay is set at 0.46 A (0.46x200 = 920 A) and start element of RADSS relay is set at 0.88 A (0.88x200 = 1760 A). Until both the relays operate, bus bar protection will not operate.
The sub-Committee discussed matter and expressed deep concern in the matter of such protection failures at this one of the major generating station in the interconnected grid, which had resulted in complete generation loss at the station. The sub-Committee suggested that matter may be further examined in detail by the protection forum to look into the detailed cause of above switchgear equipment/protection failures at the station and suggest remedial measures on priority for implementation.
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ITEM NO.3: OPERATIONAL PLANNING 3.1 Anticipated Power Supply Position for the months – August 2008 & September 2008
WR constituents furnished details of anticipated restricted & un-restricted demands for the months of August 2008 & September 2008, which is given at Annex 3.1 (A). The details of anticipated regional deficit are given below:
(All figures in MW) August 2008 September 2008 State/
Region Anticipated Availability
Anticipated Peak Demand
Shortage Anticipated Availability
Anticipated Peak Demand
Shortage
GETCO 8050 10540 2490 9505 13250 3745 MPPTCL 3900 4500 600 4835 5200 365 CSEB 2330 2400 70 2225 2300 75 MSETCL 13510 16900 3390 12445 16650 4205 GOA 420 435 15 415 425 10 WR 29080 33260 4180 30230 36180 5950
The details for anticipated station wise Availability & Energy for the months of August 2008 & September 2008 were furnished by the constituents as given at Annex. 3.1 (B). The hourly schedule load shedding programme proposed by WRLDC for the months of August 2008 / September 2008 as furnished by WRLDC is given at Annex. 3.1 (C).
3.2 Generating units under Planned Outage and Proposed maintenance programme
The sub-Committee discussed ongoing planned outages of generating units since July 2008. The updated details are given in Annex– 3.2 (A). The sub-Committee also discussed and approved the maintenance programme of the generating units for August 2008 / September 2008. This is given in Annex 3.2 (B).
3.3 LGBR for period July 2008 to March 2009.
The 124th LGBR (period July 2008 to March 2009) for the Western Region was issued on 24.7.2008. The report was prepared on the basis of discussions in 389th OCCM held on 10.7.2008, data furnished by the constituents and the generation targets for the year 2008-09 fixed by MOP/CEA. All the concerned utilities were requested to plan maintenance schedule of their units accordingly so that actual generation is achieved as per the targets.
3.4 Commissioning of new Generating units in Western Region and the capacity expected to be commissioned during the current year 2007-08.
The status regarding Generating units, commissioned /expected to be commissioned during the current year 2008 was discussed. The updated status is as follows:
Name of the Power Projects Unit No. Capacity (MW)
Schedule Date of Commissioning
GUJARAT
(i) Kutch Lignite TPS 4 75 October 2008 (ii) Sugen CCPP- Torrent Power Block –1 370 November 2008
Block-2 370 January 2009
Block-3 370 March 2009
(iii) Surat Lignite expansion-GIPCL 1 125 Nov 2008
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MADHYA PRADESH
(i) Amarkantak TPS 5 210 Synchronised on 15.6.08
(Comml opn exp in Dec 08)
CHHATTISGARH
(i) Korba TPS (E) Extn. Stage-V 2 250 Synchronised on 18.2. 2008*
(ii) Raigarh TPP Ph-I &II – Jindal (Pvt) 1 250 comml opn since 8.12.2007
2 250 Comml opn since 16.4.2008
3 250 Comml opn since 15.6.2008
4 250 synchnsd on 17.6.2008, (comml opn exp in Aug' 08)
(iii) Pathadi TPP (LANCO) 1 300 September 2008
MAHARASHTRA
(i) Ghatghar HPS (Hydro)
(ii) Trombay TPP-(TPC)
1 2
1
125 125
250
Commissioned on 9.4.2008 Comissioned on 23.6.2008
October 2008
CENTRAL SECTOR – NTPC
(i) Sipat TPS 4 500 Comml opn since 20.6.2008
(ii) Sipat TPS 5 500 Synchronised on 13.8.2008 (Comml opn exp in Nov' 08 )
(iii) Bhilai TPP (Joint venture with SAIL) 1
2
250
250
Synchronised on 20.4.2008, (Coml opn exp in Aug/ Sep' 08 )
Nov 2009
* Utilities shall intimate expected date of commercial operation for these units.
3.5 Outage Programme of Transmission Lines
The sub-Committee discussed and approved the maintenance programme for transmission lines for the months of August 2008 / September 2008. The details are given in Annex 3.5.
ITEM NO. 4:OPERATIONAL STATISTICS FOR THE MONTH OF JULY 2008
4.1 The details of schedule Vs actual generation, demand, drawl of power from grid; exchanges etc. are given in the following Annexures:
Annex 4.1 - Schedule Vs Actual Generation and Requirement for July 2008 Annex 4.2 - Peak Demand: Schedule Vs Actual for July 2008 Annex 4.3 - Integrated Operation of the System for July 2008 Annex 4.4 - Operation of Inter State Tie lines during July 2008 Annex 4.5 - Details of Declared Capacity, Schedules and Injections from Central sector Stations,
Drawl Schedules and Entitlements of constituents during July 2008 Annex 4.6 - Inter System Exchanges for July 2008. Annex 4.7 – Details of level of Major Reservoirs in Western Region for July 2008 Annex 4.8a– Month-wise loss of generation due to non-utilisation of high cost of Naphtha fuel. Annex 4.8b –Month-wise loss of generation due to shortage of coal and gas fuels.
The sub-Committee noted as above.
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ITEM NO. 5: SYSTEM DISTURBANCE IN WESTERN REGION
There was no major grid disturbance in the Western Region during the month.
The sub-Committee noted as above.
ITEM NO. 6: IMPLEMENTATION OF RECOMMENDATIONS OF VARIOUS ENQUIRY COMMITTEES ON GRID DISTURBANCES IN WR
The updated status of implementation of recommendations of the Enquiry Committees on grid disturbances in WR is enclosed at Annex- 6.
The sub-Committee noted as above.
ITEM NO. 7: ANY OTHER ITEM 7.1 Delay in charging of 220 kV MPPTCL lines from PGCIL/NTPC stations
MPPTCL representative stated that on tripping of 220 kV MPPTCL lines from PGCIL/NTPC sub-stations the test charging is not permitted and line checking/patrolling is insisted upon which results in avoidable delays in restoration of line and prolonged interruption of power supply to large areas. He submitted details of tripping of 220 kV Itarsi-PGCIL line on 15.7.2008 at 1328 hours (restored at 1715 hours after patrolling/checking; delay of 3.47 hours) and 220 kV Mehgaon-Auraiya line on 31.7.2008 at 0157 hours (restored at 1216 hours after patrolling/checking; delay of 10.19 hours). The sub-Committee noted as above and requested PGCIL/NTPC to look into such incidents and permit test charging attempt depending upon nature of the fault (upon inspecting relay indications), in case the fault seems to be of transient nature so as to ensure least interruption to large section of consumers. MPPTCL representative also indicated about the incidents of hand-tripping of MPPTCL lines by PGCIL without intimation to the concerned utility. He said that on 31.7.2008 at 2100 hours 220 kV Rajgarh-PGCIL line was hand tripped from PGCIL end without intimation to MPPTCL. The line was charged at 0935 hours on 1.8.2008 after prolonged pursuance with PGCIL. The sub-Committee desired that prior to hand-tripping the line, an intimation should be given to all the concerned utilities to this effect.
7.2 Tripping of lines at Jhanor-Gandhar station of NTPC
AGM (OS), NTPC intimated that there had been frequent problems with PLCC of 400 kV lines at Jhanor GPS of NTPC. This has resulted prolonged non-availability 400 kV Jhanor-GPEC and Jhonor-Dehgam D/c line. He further intimated M/s BPL had intimated to them that the existing PLCC panels have been discontinued from production since 1994-95 and spares/service support is no more available. He requested WRLDC to take up the matter with PGCIL for replacement of PLCC panels for the above lines with latest models for ensuring better reliability of operation. GM, WRLDC assured to do the needful.
7.3 Energy data for ICTs/lines at Itarsi, Khandwa, Rajgarh S/Ss
Upon query by MPPTCL representative regarding provision of daily energy data to MPPTCL for above PGCIL substations, GM (O&M), WRTS-II, PGCIL intimated that arrangement is being made for provision of the data to MPPTCL for 400 kV Khandwa S/s. However possibility for providing the remaining data would be explored soon and status will be intimated.
ITEM NO. 8: DATE AND VENUE OF NEXT OCC MEETING It is proposed to hold 391st meeting of Operation and Coordination Committee of WRPC on
16th September 2008 (Tuesday).
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1. INTEGRATED OVER AN-HOUR
1.1 MAXIMUM FREQUENCY 50.16 Hz. BETWEEN 1300 Hrs & 1400 Hrs. ON 27.07.2008
1.2 MINIMUM FREQUENCY 48.81 Hz. BETWEEN 2300 Hrs & 2400 Hrs. ON 23.07.2008
1.3 AVERAGE FREQUENCY 49.31 Hz.
2. INSTANTANEOUS
2.1 MAXIMUM FREQUENCY 50.95 Hz. AT 02:05:40 Hrs. ON 25.07.2008
2.2 MINIMUM FREQUENCY 48.60 Hz. AT 23:03:48 Hrs. ON 23.07.2008
3. %AGE OF TIME WHEN FREQUENCY WAS JULY 2008 JUNE 2008 MAY 2008
3.1 BELOW 48.5 Hz. 0.00 0.00 0.00
48.5
3.2 BETWEEN 48.5 Hz. AND 48.8 Hz. 1.05 0.46 0.54
48.5 48.8
3.3 BETWEEN 48.8 Hz. AND 49.0 Hz. 12.45 6.20 3.37
48.8 49.0
3.4 BETWEEN 49.0 Hz. AND 49.5 Hz. 62.21 37.98 33.23
49.0 49.5
3.5 BETWEEN 49.5 Hz. AND 49.8 Hz. 18.40 28.50 27.11
49.5 49.8
3.6 BETWEEN 49.8 Hz. AND 50.2 Hz. 5.54 23.11 28.52
49.8 50.2
3.7 BETWEEN 50.2 Hz. AND 50.5 Hz. 0.32 3.71 6.91
50.2 50.5
3.8 BETWEEN 50.5 Hz. AND 51 Hz. 0.03 0.04 0.32
50.5 51.0
3.9 BETWEEN 51.0 Hz. AND 51.5 Hz. 0.00 0.00 0.00
51.0 51.5
3.10 ABOVE 51.5 Hz. 0.00 0.00 0.00
51.5
4.1 NO. OF TIMES FREQUENCY
TOUCHED 48.80 Hz. 48.80 390 188 138
4.2 NO. OF TIMES FREQUENCY
TOUCHED 48.60 Hz. 48.60 0 0 3
4.3 NO. OF TIMES FREQUENCY
TOUCHED 51.00 Hz. 51.00 0 0 0
FREQUENCY PARTICULARS DURING JULY 2008
(AS PER FREQUENCY REPORT OF WRLDC)
( )
No. of Occasions
Max Load Relief at 48.8 Hz
No. of Occasions
Max Load Relief at 48.8
Hz
No. of Occasions
Load Relief at 48.8 Hz
No. of Occasions
Max Load Relief at 48.8
Hz
1 01-Jul-08 0 0 1 11.1 1 0.4 2 137 2 02 02-Jul-08 1 83 2 10 7 160.5 6 117 3 03 03-Jul-08 0 0 0 0 0 0 3 145 5 04 04-Jul-08 0 0 2 21.5 3 73.8 2 88 3 05 05-Jul-08 0 0 1 14.2 7 176.8 4 122 8 06 06-Jul-08 0 0 0 0 0 0 0 0 0 07 07-Jul-08 0 0 0 0 0 0 0 0 0 08 08-Jul-08 0 0 0 0 3 20.3 2 30 0 09 09-Jul-08 0 0 0 0 1 89.2 1 98 0 0
10 10-Jul-08 0 0 3 43 6 108.1 5 114 14 011 11-Jul-08 1 122 7 38 4 134.9 4 90 8 012 12-Jul-08 0 0 0 0 2 124.8 2 107 1 013 13-Jul-08 0 0 0 0 0 0 0 0 0 014 14-Jul-08 0 0 0 0 4 93.8 2 175 1 015 15-Jul-08 3 111 5 29.5 4 62.3 5 122 9 016 16-Jul-08 0 0 2 27.4 6 147 5 125 9 017 17-Jul-08 2 68 10 30.6 12 154.6 17 118 44 018 18-Jul-08 4 187 7 30.1 5 100 9 80 18 019 19-Jul-08 0 0 13 40.95 28 172.5 15 130 26 020 20-Jul-08 0 0 0 0 0 0 3 65 0 021 21-Jul-08 1 121 2 31.48 15 151.5 9 132 21 022 22-Jul-08 7 610* 13 26.6 18 110.3 16 129 50 023 23-Jul-08 10 135 23 34.4 26 174 22 84 71 024 24-Jul-08 7 237 20 28.9 26 158.6 15 79 71 025 25-Jul-08 2 119 3 16.6 4 104.1 10 81 9 026 26-Jul-08 0 0 0 0 5 136.8 0 0 3 027 27-Jul-08 2 96 0 0 0 0 0 0 0 028 28-Jul-08 0 0 0 0 1 84.9 0 0 0 029 29-Jul-08 0 0 0 0 2 24.9 3 79 0 030 30-Jul-08 2 66 0 0 7 144 9 95 13 031 31-Jul-08 0 0 1 0.9 0 0 3 50 1 0
10 237 23 43 28 177 22 17542 115 197 174 390 0
220 38 152 550
220 38
*NOTE: DF/DT OperatedIn Gujarat System **NOTE: FTR Load
RELIEF 343 MWObtained on 22.07.2008In Maharashtra
No. of times frequency touched
below 48.60 Hz
. .ANNEX-2.4.2
DateSl. No Madhya Pradesh
WESTERN REGIONAL POWER COMMITTEE, MUMBAI
MAXIMUM
Maharashtra**
Under Frequency Operation in various Constituent System of Western Region during the month July 2008( Compiled from the data received from the constituents)
No. of times frequency
touched below 48.80 Hz
Recommonded Load relief at 48.6 Hz
Recommonded Load relief at 48.8 Hz
TOTAL
Gujarat Chhattisgarh
.ANNEX - 2.5
/
Power Cut/Restrictions in Western Region for the month of July 2008
:
Gujarat
1 Power Cut/ Restriction on Industries a) All industries are required to stagger their weekly off days and cannot avail as per their choice,
compulsorily. b) All industries are required to keep their recess timings staggered. c) All industries are required to observe one additional holiday after weekly off day i.e. 2 days staggering on industries.
2. Power supply to Agricultural & Rural Sectors a) Only 8 hours power supply in staggered form in rotation of day and night is given to Agriculture.
No supply during rest of 16 hours. b) Jyotigram Yojana 24 hrs.
3. Any other information: In case of very poor grid frequency, unscheduled load shedding in rural and urban areas is taken by way of pulling out main (66 kV) feeders to improve grid frequency.
: Madhya Pradesh
/ ,
1 Power Cut/ Restriction on Industries, Load Shedding in the state etc
Restriction Timing Details
Quantum of power cut (MW) From To
Total Energy Cut (MUs /day
(a) HT/LT
/
(b) Load Shedding
Nil
Nil
Nil
Nil
Nil
Nil
Nil
Nil
(c) Other information 1.Weekly Off 2.Staggering of power supply
Nil Nil
Nil Nil
Nil Nil
Nil Nil
2. Power supply to Agricultural Sector: - Supply Hours per day Details From
Date To
Date Max. (Hrs) Min. (Hrs) Average (Hrs) 2.1 Three-Phase Supply 01.07.08 31.07.08 04:58 02:57 04:00 2.2 Single-Phase Supply 01.07.08 31.07.08 10:00 04:11 07:35 2.3 Remarks / Note One day weekly off
-2-
3. Any other information
Scheduled Power cuts in Urban Areas Details From
Date To
Date
Average Supply
Hours per day Max. (Hrs) Min. (Hrs) Average (Hrs)
3.1 Commissionary H. Qtrs. 01.07.08 31.07.08 23:10 21:55 22:37 3.2 District Head Qtrs. 01.07.08 31.07.08 21:51 18:20 19:58 3.3 Tehsil Head Qtrs. 01.07.08 31.07.08 18:22 09:33 15:30
:
Maharashtra
/ ,
1. Power Cut/ Restriction on Industries, Load Shedding in the state etc
Restriction Timing Details
Quantum of power cut (MW) From To
Total Energy Cut (MUs /day
(a) Power Cuts/Restriction on HT/ LT Industries (b) Load Shedding From 01.07.08 to 12.07.08 From 13.07.08 to 24.07.08 From 25.07.08 to 31.07.08
Nil
@700-5400 @1100-5600 @500-4200
Nil
00.00 00.00 00.00
Nil
24.00 24.00 24.00
Nil
@ 85.00 Mus/day 71 to 110 Mus/day @ 60.00 Mus/day
(c) Any other information 1.Weekly Off 2. Staggering of power supply
Nil 400 MW
Nil 00.00
Nil 24.00
Nil 9.60 Mus/day
2. Power supply to Agricultural Sector Supply Hours per day Details From
Date To
Date Max. (Hrs) Min. (Hrs) Average (Hrs) 2.1 Three-Phase Supply 01.07.08
13.07.08 25.07.08
12.07.08 24.07.08 31.07.08
12:00 08:00 12:00
10:00 06:00 11:00
11.00 07:00 11:00
2.2 Single-Phase Supply* 01.07.08 18.07.08 20:00 20:00 20:00
19.07.08 31.07.08 18:00 18:00 18:00 Any other information:
Note: * @ 650 MW Agricultural load is supplied by Ag feeder separation scheme, where 10.00 hrs of supply is made available.
@ 1050 MW of rural area load is covered against single-phasing scheme.
-3- : Chhattisgarh:
/ ,
1 Power Cut/ Restriction on Industries, Load Shedding in the state etc
Restriction Time
Details
Quantum of power cut (MW)
From To
Total
Energy Cut (MUs /day)
00.00(Av)
00.00(Av) 0.00 (Av) 20.97 (Av)
00.00(Av) 00.00 (Av)
1.Rural 0.00(Av) 2.Town Feeders (C-1to C-6 & X) 0.00 (Av)
-
-
- 17.00
- -
- -
-
-
- 23.00
- -
- -
-
-
- 0.126
- -
- -
(A) Scheduled (a) (i) Power Cuts/ Restriction on HT Industries (ii) Power Cuts/Restriction on LT Industries (iii) Power Cuts/Restriction on Rural (iv) Agriculture pump
(v)Urban/ Sub-Urban (iv)Town feeders(C-1to C-6)
(B) Un-Scheduled (b) Load Shedding
3. HT Industries 91.17 (Av) Total duration for the month = 23.40 Hrs.
0.069
Total Energy Cut/day 0.195 ( c) Any other information 1.Weekly Off/staggering of power supply
1day(In a week as per consumer’s option) 50MW(Av.)
- 24 Hrs 0.039
2. Power supply to Agricultural Sector
Supply Hours per day Details From Date
To Date Max. (Hrs) Min. (Hrs) Average (Hrs)
2.1 Three-Phase Supply 01.07.08 to 31.07.08 , 6.00 Hrs ( Power cut)
18.00
2.2 Single-Phase Supply - - - - - 2.3 Remarks/Note/ - - - - -
/ Any other information: Nil
:
Goa: Nil
3.1(A)
ANTICIPATED DEMAND AND ENERGY REQUIREMENT FOR AUGUST 2008 AND SEPTEMBER 2008
State DEMAND ENERGY REQUIREMENT
(MW) (MUs)
AUGUST 2008 SEPTEMBER 2008 AUGUST 2008 SEPTEMBER 2008
10500 13290 5300 6000
10540 13250 5310 6010
4500 5200 2560 2700
4500 5200 2560 2700
2200 2100 1250 1200
2400 2300 1350 1300
16500 16250 9900 10550
16900 16650 10100 10750
415 405 255 250
435 425 265 260
32630 35624 19265 20700
33262 36179 19575 21010
RESTRICTED
UNRESTRICTED
RESTRICTED
UNRESTRICTED
RESTRICTED
UNRESTRICTED
WESTERN REGION
GOA
MAHARASHTRA
CHHATISGARH
MADHYA PRADESH
GUJARAT
RESTRICTED
UNRESTRICTED
RESTRICTED
UNRESTRICTED
RESTRICTED
UNRESTRICTED
3.1(B)
AUGUST 2008 SEPTEMBER 2008
Sl. No. Station Name Energy Demand Energy Demand(Gwh) (MW) (Gwh) (MW)
(A) GUJARAT
HYDRO
1 Ukai 0 0 70 150
2 Ukai LBCH 2 3 2 3
3 Kadana 0 0 60 120
4 SSP GUVNL Share 140 206 117 206
TOTAL(H) 142 209 249 479
THERMAL
1 370 500 361 500
2 Dhuvaran 260 420 245 420
3 Ukai -1 to 5 570 770 545 770
4 Gandhinagar - 1 to 5 430 780 530 790
5 Wanakbori - 1 to 7 855 1260 1020 1470
6 Utran 90 135 85 135
7 Sikka 110 220 160 220
8 Kutch Lignite 110 215 125 215
9 Surat Lignite 30 125 160 250
10 Akrimota Lignite 60 100 72 100
11 GIPCL 190 290 180 290
12 ESSAR 0 0 300 515
13 GPEC 284 382 320 600
14 GSEG 70 150 72 150
15 CPP GAS 35 50 37 50
Total (T) 3474 5447 4220 6525
+ Total (H+T) 3616 5656 4469 7004
TAPS-I (50% Share) 95 144 48 144
CS Entitlement 1250 1783 1261 1875
Rest. Energy Req. 4961 7583 5778 9023 (B) MADHYA PRADESH
HYDRO
1 Chambal Pr.(50%share) 25 100 25 100
2 Pench 30 150 30 150
3 Bargi 55 85 60 85
4 Bansagar 1 Tons 110 315 120 315
5 Bansagar II (Deolondh) 10 25 10 25
6 Bansagar III (Silpara) 20 50 20 50
7 Bansagar IV (Zinaha) 12 10 12 108 Madikheda 10 40 10 40
9 Birsingpur 5 20 10 20
10 Rajghat 5 45 10 4511 Pench to MSPGCL 10 50 10 5012 Omkareshwar 450 1000 220 650
13 Indira Sagar 230 400 310 110
14 SSP MPPGCL Share 498 735 418 735
TOTAL(H) 1460 2975 1255 2335
AVAILABLE CAPACITY & ENERGY :- AUGUST 2008 AND SEPTEMBER 2008
3.1(B)/2
AUGUST 2008 SEPTEMBER 2008
Sl. No. Station Name Energy Demand Energy Demand(Gwh) (MW) (Gwh) (MW)
THERMAL
1 I AMK I Unit -1&2 14 19 13 19
2 II AMK II Unit 1 & 2 77 103 75 104
3 I Satpura-I(60%Share) 90 121 81 112
4. II Satpura-II Unit 6 & 7 200 186 117 161
5. II Satpura-II Unit 8 & 9 261 353 254 353
6 I SGTPS-I Unit - 1 & 2 212 285 167 234
7 II SGTPS-II Unit 3&4 158 212 193 268
8 III SGTPS-III-5 308 414 290 414
Total (T) 1319 1693 1189 1665
+ Total (H+T) 2779 4668 2445 4001
CS Entitlement 1224 1736 1258 1834
Rest. Energy Req. 4003 6404 3702 5835
(C) CHHATISGARH HYDRO
1.
Hasdeo Bango 50 120 50 120
2 Gangrel + Mini Hydro 9 17 9 17
TOTAL(H) CSEB 59 137 59 137
THERMAL
1. ( ) Korba (E) Unit-1 to 4 83 200 110 200
2. ( ) Korba (E) Unit 5 to 6 143 240 143 240
3. ( ) Korba (W) Unit 1 to 4 375 840 375 630
4. ( ) Korba EB Unit 1 & 2 268 500 268 500
Total (T) 868 1780 896 1570
+ Total (H+T) 927 1917 955 1707
CS Entitlement 326 513 333 518
Rest. Energy Req. 1253 2430 1288 2225
(D) MAHARASHTRA
HYDRO
1. 1 2 Koyna 1 & 2 23 520 23 520
2. III Koyna III 15 240 15 240
3. IV Koyna IV 50 1000 50 1000
4. Koyna DPH 5 40 5 40
5.
TATA Hydro 57 444 60 444
6.
Vaitarna 10 60 10 60
7. Eldari 0 0 0 0
8. Bhatgar & Vir 2 0 2 0
9. Paithan 1 0 1 0
10. Tillari 8 0 8 0
3.1(B)/3
AUGUST 2008 SEPTEMBER 2008Sl. No. Station Name Energy Demand Energy Demand
(Gwh) (MW) (Gwh) (MW) 11. Bhira Tail Race 3 80 3 80 12. Small Hydro (others) 14 62 14 6213. Pench Share 33.33% 10 50 10 5014 SSP MSPGCL Share 236 348 198 348
TOTAL(H) 434 2844 399 2844
THERMAL
1. Nasik Unit -1& 2 120 250 120 250 2. Nasik Unit -3 125 210 125 210 3. Nasik Unit -4 125 210 125 210 4. Nasik Unit -5 125 210 125 210 5. Trombay Unit 1 to 4 100 150 100 150 6. Trombay Unit -5 324 500 325 500 7. Trombay Unit -6 325 500 325 500 8. Trombay Unit -7 0 0 0 0 9. Koradi Unit -1 to 4 175 420 220 420 10. Koradi Unit -5 105 200 110 200
11. Koradi Unit -6 102 210 105 210
12. Koradi Unit -7 129 210 130 210
13. Bhusawal Unit -1 25 55 25 55
14. Bhusawal Unit -2 120 210 120 210
15. Bhusawal Unit -3 120 210 120 210
16. Parli Unit -1& 2 30 40 30 40
17. Parli Unit -3 100 210 100 210
18. Parli Unit -4 100 210 100 210
19. Parli Unit -5 130 210 130 210
20. Parli Unit -6 50 250 100 250
21. Khaperkheda Unit 1&2 255 420 255 420
22. Khaperkheda Unit 3&4 280 420 280 420
23. Paras-2 30 55 30 55
24. Paras-3 55 250 55 250
25. Uran (Gas) 210 360 210 360
26. Uran (WHR) 110 240 110 240
27. Chandrapur Unit -1 100 210 100 210
28. Chandrapur Unit -2 100 210 100 210
29. Chandrapur Unit -3 50 210 50 210
30. Chandrapur Unit - 4 110 210 110 210
31. Chandrapur Unit -5 150 500 150 500
32. Chandrapur Unit -6 180 500 300 500
33. Chandrapur Unit -7 300 500 300 500
34 Dahanu Unit-1&2 372 500 360 50035 RGPPL Block I 0 0 0 036 RGPPL Block II 100 300 600 125037 RGPPL Block III 0 0 0 0
Total (T) 4832 9350 5545 10300
+ Total (H+T) 5266 10791 5944 11599TAPS-I (50% Share) 95 144 48 144
CS Entitlement 1787 2575 1823 2701Rest. Energy Req. 7149 13510 7815 14444
3.1(B)/4
AUGUST 2008 SEPTEMBER 2008Sl. No. Station Name Energy Demand Energy Demand
(Gwh) (MW) (Gwh) (MW)(E) GOA
1 IPP Reliance 20 35 20 352 CS Entitlement 153 246 159 253
Rest. Energy Req. 173 281 179 288
(F) DD & DNH
CS Entitlement 324 467 330 484(G) CENTRAL SECTOR
1. N.P.C.
1.1 TAPS Unit -1 106 160 53 160
1.2 TAPS Unit -2 106 160 53 160
1.3 TAPS Unit -3 300 480 300 480
1.4 TAPS Unit -4 300 480 300 480
1.5 KAPS Unit -1 95 125 95 1251.6 KAPS Unit -2 95 125 95 125
NPC Total 1002 1530 896 1530
2. N.T.P.C.
2.1.1 KSTPS Unit-1
2.1.2 KSTPS Unit-2
2.1.3 KSTPS Unit-3
2.1.4 KSTPS Unit-4 1215 2100 1240 2100
2.1.5 KSTPS Unit-5
2.1.6 KSTPS Unit-6
KSTPS Total 1215 2100 1240 2100
2.2.1 VSTPS Unit 1- 6 740 760 875 1050
2.2.2 VSTPS Unit 7 - 8 600 1000 600 1000
2.2.3 VSTPS Unit 9 - 10 700 1000 700 1000
VSTPS Total 2040 2760 2175 3050SIPAT STPS-1 300 500 320 500SIPAT STPS-2 0 0 0 0TOTAL SIPAT 300 500 320 500
3.1 Kawas GT-1A
3.2 Kawas GT-1B
3.3 Kawas ST-1C 488 656 473 656
3.4 Kawas GT-2A
3.5 Kawas GT-2B
3.6 Kawas ST-2C
KGPS Total 488 656 473 550
4.1 Gandhar GT-1
4.2 Gandhar GT-2
4.3 Gandhar GT-3 456 657 407 657
4.4 Gandhar ST-4
GGPS Total 456 464 407 657SSP 874 1290 734 1290
Pench 30 150 30 150
5.0 WESTERN REGION
5.1 Rest. Energy Req. 18110 31078 19344 32733
3.2(A)Annex- 3.2 (A)
S. No. Unit No. Capacity Reason(MW) Date Time Date Time
1.0 GUVNL
1.1 Wanakbori 4 210 08.06.08 01:05 03.07.08 10:00 AOH1.2 Ukai 4 200 11.06.08 00:01 20.07.08 16:41 AOH1.3 Surat Lignite 2 125 22.06.08 01:46 17.07.08 23:55 AOH1.4 Dhuvaran(T) 6 140 14.07.08 08:35 31.07.08 02:25 AOH1.5 Wanakbori 2 210 28.07.08 18:22 08.09.08 AOH1.6 Gandhinagar 5 210 03.07.08 21.07.08 AOH1.7 Wanakbori 3 210 03.07.08 25.07.08 AOH1.8 Wanakbori 5 210 02.07.08 23.07.08 AOH1.9 Wanakbori 6 210 29.07.08 00:36 14.08.08 AOH
2.0 MPPGCL
2.1 Satpura 3 62.5 25.05.08 01:17 06.07.08 20:25 COH
2.2 Satpura 8 210 05.06.08 04:00 08.07.08 18:38 AOH
2.3 SGTPS 2 210 08.07.08 03:45 10.08.08 AOH
3.0 CSEB
3.1 ( ) Korba (W) 2 210 22.07.08 02:12 17.08.08 AOH
3.2 ( ) Korba (E) 1 50 17.06.08 10:38 07.07.08 03:25 AOH
4.0 MSPGCL
4.1 Koradi 5 200 12.07.08 01:06 06.08.08 AOH
4.2 Parli 3 210 09.06.08 21:17 07.08.08 AOH
4.3 Nasik 1 140 17.05.08 01:40 21.07.08 13:07 AOH
4.4 Chandrapur 1 210 06.06.08 23:46 02.07.08 8:10 AOH
4.5 Chandrapur 6 500 03.07.08 17.08.08 AOH
4.6 Koradi 4 120 27.01.08 19:03 10.08.08 Vibration Prob.
4.7 Koradi 2 140 21.07.08 19:03 15.08.08 AOH
4.8 Parli 6 250 26.07.08 22:28 25.08.08 AOH
4.9 Trombay 7A 120 20.07.08 01:19 19.09.08 AOH
4.10 Trombay 7B 60 20.07.08 02:00 Exp By AOH4.11 RGPPL 2A 350 19.01.08 02:40 Exp By Stator problem
5.0 Central Sector5.1 KSTPS 5 500 05.06.08 03.07.08 AOH5.2 KSTPS 6 500 30.07.08 25.08.08 AOH
5.3 VSTPS 8 500 22.07.08 31.08.08 AOH
5.4 VSTPS 9 500 19.06.08 15.07.08 Boiler etc
5.5 Gandhar GT 3 144.3 06.06.08 06.07.08 AOH5.6 KAPS 1 220 01.07.08 December-09 Coolant CH replacement
DETAILS OF GENERATING UNITS UNDER PLANNED OUTAGE DURING JULY 2008
/
Sync. on /Exp. by Taken out on
( )
(MW) From To From To
1 GUVNL1.1 Gandhinagar 4 210 02.08.08 10.09.08 COH1.2 Gandhinagar 1 120 01.09.08 31.03.09 Major R & M Work1.3 Wanakbori 7 210 12.08.08 01.09.08 AOH
1.4 Dhuvaran(T) 5 140 16.08.08 25.09.08 AOH
2.0 MPPGCL2.1 Amarkantak 3 120 31.08.08 15.09.08 AOH
2.2 Amarkantak 4 120 13.08.08 27.08.08 AOH
2.3 Satpura 1 62.5 30.09.08 10.10.08 AOH
2.4 Satpura 2 62.5 15.09.08 30.09.08 AOH
2.5 Satpura 4 62.5 08.08.08 29.08.08 AOH
2.6 Satpura 5 62.5 30.08.08 14.09.08 AOH
2.7 Satpura 6 200 15.09.08 30.09.08 AOH
2.8 Satpura 7 210 16.08.08 10.09.08 AOH
2.9 SGTPS 4 210 26.08.08 10.09.08 AOH
2.10 SGTPS 3 210 11.08.08 26.08.08 AOH
2.11 SGTPS 1 210 10.09.08 30.09.08 AOH
3.0 CSEB3.1 ( ) Korba (E) 2 50 25.08.08 09.09.08 AOH3.2 ( ) Korba (E) 3 50 02.08.08 17.08.08 AOH3.3 ( ) Korba (E) 4 50 10.08.08 24.08.08 AOH3.4 ( ) Korba (W) 4 210 18.08.08 01.10.08 AOH
4.0 MSPGCL
4.1 Chandrapur 7 500 18.09.08 13.10.08 AOH
4.2 Chandrapur 5 500 18.08.08 17.09.08 AOH
4.3 Parli 5 210 01.09.08 26.09.08 AOH
4.4 Paras 2 Bir 1 62.5 20.09.08 15.10.08 AOH
4.5 Nasik 4 210 20.09.08 02.11.08 COH
5.0 Central Sector5.1 KSTPS 4 500 19.09.08 18.10.08 AOH5.2 VSTPS 2 210 31.08.08 09.10.08 COH5.3 Kawas GT 2B 106 05.09.08 11.09.08 A Inspection.5.4 Kawas GT 2A 106 13.09.08 19.09.08 A Inspection5.5 Kawas ST 2C 116 05.09.08 19.09.08 Minor Inspection.5.6 Gandhar GT 2 144.3 24.09.08 30.09.08 A Inspection
5.7 TAPS 1 160 15.09.08 14.11.08 Refueling
ReasonCapacity Outage as per Annual Maintenance Plan
S. No. Unit No. Outage Proposed/Availed
DETAILS OF MAINTENANCE PROGRAM OF GENERATING UNITS PROPOSED DURING AUGUST 2008 AND SEPTEMBER 2008
/
3.2(B)Annex- 3.2 (B)
3.5(1/2)
Maintenance Programme of Transmission Elements for the months of August 2008 & September 2008
Outage programme
Reason / Agency availing outage
/Lines / ICT Particulars
Date Time /
Sl.No
From To From /To
Daily/ Continuous
A. GETCO 1 400 kV Kasor -SSP 19.09.08 20.09.08 0800 1700 Daily AMP GETCO
2 220 kV Bhilad – TAPS
On 22.08.08 & 29.08.08 in August& on
19.09.08&26.09.08 in Sept.
0800 1700 Daily GETCO
3 220 kV Vapi TAPS II
On 26.08.08 & 27.08.08 in August
On 23.09.08 & 24.09.08 in Sept.
0800 1700 Daily
New MICOM
Relay providing
work GETCO
4 400 kV Soja – PGCIL(Dahegam)
13.08.08 14.08.08 0800 1800 Daily Maintenance Work
GETCO
5 220 kV Bhilad – Ambheti - II 13.08.08 0900 1800 Daily DCRM testing & Bay maint
GETCO
6 220 kV Bhilad – Ambheti - III 14.08.08 0900 1800 Daily DCRM testing & Bay maint
GETCO
7 220 kV Bhilad – Ambheti - I 18.08.08 0900 1800 Daily DCRM testing & Bay maint
GETCO
B. MPPTCL
1 400 kV Bina-Bhopal # 1 22.09.08 0800 1700 Daily AMP MPPTCL
2 400 kV Bina-Bhopal # 2 23.09.08 0800 1700 Daily AMP MPPTCL
C. CSEB
1 400 kV Bay-2,500 MVA,400/220 kV ICT at 400 kV S/S Korba West
13.08.08 14.08.08 0800 1700 Daily Routine Maintenance
CSEB
2 400/220 kV, 315MVA ICT – I at Khedamara
18.08.08 23.08.08 0800 1700 Continuous
Routine Maint
CSEB
D MSETCL
1 400 kV Kalwa- Lonikhand 18.09.08 0700 2000 Daily R M Work MSETCL
2 400 kV Lonikhand-Padgha 25.09.08 0700 2000 Daily R M Work MSETCL
3 400 kV Lonikhand-Parli-I 02.09.08 0700 2000 Daily R M Work MSETCL
4 400 kV Lonikhand-Parli-II 11.09.08 0700 2000 Daily R M Work MSETCL
5 400 kV Padgha-Tarapur II 29.09.08 0700 2000 Daily R M Work MSETCL
6 400 kV Bableshwar-Dhule-I 20.09.08 0700 2000 Daily R M Work MSETCL
7 400 kV Bableshwar-Dhule-I 27.09.08 0700 2000 Daily R M Work MSETCL
8 400 kV Chandrapur-Bh`wati-II 16.09.08 0700 2000 Daily R M Work MSETCL
9 400 kV Chandrapur- Parli II 16 & 18.09.08 0700 2000 Daily R M Work MSETCL
10 400 kV Chandrapur- Parli III 23 &30.09.08 0700 2000 Daily R M Work MSETCL
11 400 kV Kalwa-Padgha-II 01.09.08 0700 2000 Daily R M Work MSETCL
3.5(2/2)
12 400 kV Koradi-Bhusawal-I 01.09.08 0700 2000 Daily R M Work MSETCL
13 400 kV Koradi-Bhusawal-II 12&19.09.08 0700 2000 Daily R M Work MSETCL
14 HVDC Pole 1 & 2 21.08.08 24.08.08 0800 1800 Daily R M Work MSETCL
15 HVDC Pole 2 18.08.08 30.08.08 0800 1800 Daily Replacement of
pole-II Y ph convertor at Padgha
MSETCL
16 400 kV Padghe-Bableshwar-II 29.08.08 0800 1800 Daily E/W replacement MSETCL
17 400 kV New Koyna- Dabhol-II
11.08..08 0830 1800 Daily R M Work MSETCL
18 400/220 kV 315 MVA ICT-I 22.08.08 0800 1800 Daily Bay Maintenance etc
MSETCL
19 400 kV Stage-4 - Jejuri 25.08.08 0830 1800 Daily R M Work MSETCL
20 400 kV Padhga – Nagothane 1& 2
29.08.08 0800 1800 Daily E/W replacement MSETCL
21 400 kV Koradi - Chandrapur 13.08.08
0900 1500 Daily R M Work MSETCL
22 400 kV Chandrapur S/S main bus -2
14.08.08 0700 1700 Daily Replacement of Y & B phase CVTs
MSETCL
23 400 kV Kharghar- Padgha 12.08.08
0900 1700 Daily PLCC Work MSETCL
24 400 kV Nagothane- Dabhol-I 13.08.08 0800 1800 Daily Bay maintenance & tree cutting work
MSETCL
D
Central Sector 1 220 kV Kawas - Haldarwa 19.08.08 0800 1700 Daily PM Work NTPC
2 400 kV V’Chal – Jabalpur - I 02.09.08 0800 1700 Daily AMP NTPC
3 400 kV V’Chal – Jabalpur - II 09.09.08 0800 1700 Daily AMP NTPC
4 TCSC – I at Raipur 15.08.8 18.08.08 0700 1700 Daily AMP Work WRTS I
5 TCSC – II at Raipur 22.08.8 25.08.08 0700 1700 Daily AMP Work WRTS I
6 400 kV Raipur – Raigarh Ckt I 15.08.8 18.08.08 0700 1700 Daily AMP Work WRTS I
7 400 kV Raipur – Raigarh Ckt II 22.08.8 25.08.08 0700 1700 Daily AMP Work WRTS I
Auxillary Sr. Station Name Energy Peak Energy Peak Consumption No. (Gwh) (Mw) (Gwh) (Mw) (Gwh)
(A) GUJARAT
HYDRO
1. Ukai - 1 6.34 72 0.000Ukai - 2 2.61 72 0.000Ukai - 3 8.38 67 0.000Ukai - 4 0.77 0 0.000Ukai (Total) 50 150 18.11 139 0.193
2. Ukai LBCH - 1 0.00 0 0.000Ukai LBCH - 2 0.00 0 0.000Ukai LBCH (Total) 2 3 0.00 0 0.007
3. Kadana - 1 5.59 50 0.079Kadana - 2 6.50 50 0.096Kadana - 3 0.00 0 0.000Kadana - 4 1.87 50 0.317Kadana (Total) 45 120 13.96 100 0.492
4. PANAM 0 0 0.27 1 0.005 6. TOTAL(H) 97 273 32.33 225 1.189
THERMAL
1 43 60 45.41 63 4.4002 85 120 89.88 123 7.1003 78 110 82.55 113 7.7404 79 110 80.70 113 7.1105 25.28 37 0.0006 21.14 32 0.0007 23.47 35 1.6108 Dhuvaran - 4 23 60 0.00 0 0.0009 Dhuvaran - 5 73 100 54.85 100 5.650
10 Dhuvaran - 6 73 100 14.71 50 2.74111 Dhuvaran - GT 1 0.00 0 2.87412 Dhuvaran - GT 2 0.00 0 2.48813 Dhuvaran - STG 115.67 197 0.00014 Ukai -1 0 0 24.31 95 3.24015 Ukai -2 57 80 42.39 71 6.00116 Ukai -3 125 200 119.20 200 11.30917 Ukai -4 125 200 104.19 200 9.93918 Ukai -5 145 210 149.58 212 13.14819 Gandhinagar - 1 60 85 51.16 88 5.01820 Gandhinagar - 2 60 85 67.96 103 5.18721 Gandhinagar - 3 100 150 145.57 213 16.28922 Gandhinagar - 4 100 150 128.17 189 15.11523 Gandhinagar - 5 145 210 62.40 214 6.06424 Wanakbori - 1 151 210 143.18 202 64.53725 Wanakbori - 2 151 210 116.47 200 0.00026 Wanakbori - 3 151 210 41.74 210 0.00027 Wanakbori - 4 151 210 131.56 212 0.00028 Wanakbori - 5 151 210 50.42 212 0.00029 Wanakbori - 6 151 210 139.72 212 0.00030 Wanakbori - 7 151 210 156.62 213 0.00031 Utran GT 1 50 100 9.75 32 2.54232 Utran GT 2 9.45 31 0.00033 Utran GT 3 18.14 50 0.00034 Utran STG 51.92 143 0.000
Actual Schedule
48 90
0
SCHEDULE VS ACTUAL GENERATION & AVALABILITY FOR JULY 2008
4.1
0
4.1/2
Auxillary Sr. Station Name Energy Peak Energy Peak Consumption No. (Gwh) (Mw) (Gwh) (Mw) (Gwh)
35 Sikka - 1 70 110 56.83 97 7.33836 Sikka - 2 70 110 62.89 114 7.88037 Kutch Lignite - 1 45 70 32.75 71 3.16338 Kutch Lignite - 2 45 70 36.72 72 0.00039 Kutch Lignite - 3 47 75 34.70 75 0.00040 Surat Lignite - 1 82.85 128 8.60741 Surat Lignite - 2 37.44 129 4.05742 Akrimota Lignite - 1 15.95 120 3.16343 Akrimota Lignite - 2 48.88 126 0.00044 GIPCL GT - 1 18.41 35 1.50745 GIPCL GT - 2 19.19 33 0.00046 GIPCL GT - 3 18.69 32 0.00047 GIPCL ST - 1 31.86 51 0.00048 GIPCL GT - 4 64.08 106 2.07649 GIPCL ST - 2 34.33 53 0.00050 ESSAR GT - 1 72.05 104 6.78651 ESSAR GT - 2 72.30 108 0.00052 ESSAR GT - 3 0.01 10 0.00053 ESSAR STG 82.45 118 0.00054 GPEC GT - 1 23.70 130 0.95955 GPEC GT - 2 70.43 130 0.57656 GPEC GT - 3 20.36 131 1.08057 GPEC STG 33.19 226 0.00058 GSEG GT - 1 2.79 45 1.62959 GSEG GT - 2 34.95 49 0.00060 GSEG STG 19.15 49 0.00061 Imp from CPP 50 100 40.92 100 0.000
62 Total (T) 2932 5446 3348.10 6140 263.97563 + Total (H+T) 3176 5916 3380.44 6283 265.164
Wind Energy 280.54+ + Total (H+T+Wind) 3660.97 6385
Exchanges (+) 1438.04 Restricted Energy Req. 6000 5099.01
(B) MADHYA PRADESH 423.0800
HYDRO
1 Chambal Pr.(50%share) 25 100 21.35 157 0.0001.1 Gandhi Sagar 10.14 86 0.0901.2 R.P.Sagar 17.60 129 0.0501.3 Jawahar Sagar 14.95 99 0.020
2 Pench 30 150 3.84 142 0.0603 Bargi 27 75 47.64 60 0.050
Bargi (LBCH) 0.00 04 Bansagar-1 (Tons) 110 200 199.05 315 0.0205 Bansagar-2 (Deolondh) 5 15 0.00 0 0.0006 Bansagar-3 (Silpara) 8 40 12.43 28 0.0307 Bansagar-4 (Zinaha) 8 10 2.47 0 0.0008 Medikheda 8 20 33.51 35 0.0009 Birsingpur 4 20 13.81 20 0.020
10 Tawa 0 0 0.00 0 0.00011 Rajghat 5 30 12.63 23 0.02012 Omkareshwar 270 400 110.23 360 0.33113 Indira Sagar 532 800 187.52 754 0.924
TOTAL(H) MPPGCL 1032 1860 640.63 1672 1.264
173 240
60 100
95
430
140
95 140
Actual
350 480
Schedule
90 150
600
4.1/3
Auxillary Sr. Station Name Energy Peak Energy Peak Consumption No. (Gwh) (Mw) (Gwh) (Mw) (Gwh)
THERMAL
1 I AMK I Unit -1 4.89 17 1.2302 I AMK I Unit -2 0.00 0 0.0003 II AMK II Unit -1 52.45 80 11.6404 II AMK II Unit -2 40.27 75 0.0005 I Satpura-I(60%Share) 86 115 103.55 161 16.9106 II Satpura-II Unit 6 126.68 190 21.7507 II Satpura-II Unit 7 115.69 190 0.0008 II Satpura-II Unit 8 89.56 195 11.3409 II Satpura-II Unit 9 9.77 160 0.000
10 SGTPS Unit - 1 105.95 165 14.67011 SGTPS Unit - 2 23.03 146 0.00012 SGTPS Unit - 3 107.17 177 22.95013 SGTPS Unit - 4 107.67 183 0.00014 SGTPS Unit - 5 296 398 214.04 38815 Total (T) 1282 1723 1100.72 2482 117.63016 + Total (H+T) 2838 4284 1741.35 4154 118.894
Injection from WIND 19.69 0+ + Total (H+T+WIND) 1761.04 4154
Exchanges (+) 683.30 Rest. En. Req. 2600 2444.35
(C) CHHATTISGARH
HYDRO
1
Hasdeo Bango 50 120 16.54 120 0.0802 Gangrel 6 17 1.25 8 0.0303 Mini Micro KWB 0.00 0 0.000
TOTAL(H) CSEB 56 137 17.79 128 0.120
THERMAL
1 ( ) Korba (E) Unit-1 30 50 26.18 50 15.7402 ( ) Korba (E) Unit-2 30 50 28.35 48 0.0003 ( ) Korba (E) Unit-3 14 50 29.59 50 0.0004 ( ) Korba (E) Unit-4 30 50 31.04 50 0.0005 ( ) Korba (E) Unit -5 71 120 76.43 120 13.5206 ( ) Korba (E) Unit -6 35 120 28.91 113 0.0007 ( ) Korba (W) Unit -1 24 210 156.02 210 22.4008 ( ) Korba (W) Unit -2 125 210 111.44 210 0.0009 ( ) Korba (W) Unit -3 125 210 134.62 196 24.100
10 ( ) Korba (W) Unit -4 101 210 136.99 200 0.00011 KORBA(EB) Extn - 1 & 2 268 500 305.27 486 23.300
Total (T) 1064.84 1679 99.06011 BALCO Import 8.29 171 0.00012 JINDAL Import 136.12 440 0.000
Total (T+IPP) 852 1780 1209.25 2290 0.000+ Total (H+T) 902 1900 1227.04 2418 99.180
Exchanges (+) 161.89 0Rest. En. Req. 1275 1388.93 2418
(D) MAHARASHTRA
HYDRO
1 1 2 Koyna 1 & 2 30 520 80.25 555 1.6212 III Koyna III 25 240 64.78 320 0.0003 IV Koyna IV 60 1000 164.36 11244 Koyna DPH 10 40 4.89 35 0.0005
TATA Hydro 55 444 55.17 396 0.5206
Vaitarna 2 60 6.56 60 0.0007 Eldari 0 0 0.00 0 0.0008 Bhatgar & Vir 5 0 3.32 40 0.0009 Paithan 2 0 0.76 10 0.000
10 Tillari 10 0 11.67 61 0.00011 Bhira Tail Race 2 80 6.88 82 0.00012 Small Hydro (others) 17 62 9.42 0 0.000
TOTAL(H) 218 2446 408.07 1299 2.141
Actual Schedule
219
317236
100 135
239 321
201149
163
13 17
4.1/4
Auxillary Sr. Station Name Energy Peak Energy Peak Consumption No. (Gwh) (Mw) (Gwh) (Mw) (Gwh)
THERMAL
1 Nasik Unit -1 55 125 37.97 123 0.0002 Nasik Unit - 2 60 125 45.09 1233 Nasik Unit -3 125 210 139.14 210 0.0004 Nasik Unit -4 125 210 136.87 210 0.0005 Nasik Unit -5 125 210 131.95 210 0.0006 Trombay Unit -4 50 150 87.34 146 0.0007 Trombay Unit -5 325 500 363.55 505 0.0008 Trombay Unit -6 325 500 310.74 510 0.0009 Trombay -7A (Gas) 47.44 123 2.260
Trombay -7B (WHR) 28.28 70 0.0009 Koradi Unit -1 52 105 57.55 105 0.000
10 Koradi Unit -2 23 105 19.93 80 0.00011 Koradi Unit -3 52 105 27.21 100 0.00012 Koradi Unit -4 25 105 0.00 0 0.00013 Koradi Unit -5 15 200 36.45 180 0.00014 Koradi Unit -6 120 210 125.33 192 0.00015 Koradi Unit -7 120 210 131.65 215 0.00016 Bhusawal Unit -1 30 55 31.78 55 0.00017 Bhusawal Unit -2 130 210 113.32 200 0.00018 Bhusawal Unit -3 130 210 114.92 210 0.00019 Parli Unit -1 15 20 18.97 29 0.00020 Parli Unit - 2 15 20 18.29 29 0.00021 Parli Unit -3 30 210 0.00 0 0.00022 Parli Unit -4 135 210 134.69 214 0.00023 Parli Unit -5 130 210 134.68 220 0.00024 Parli Unit -6 75 250 99.35 247 0.00025 Khaperkheda Unit -1 135 210 145.52 215 0.00026 Khaperkheda Unit -2 125 210 134.08 213 0.00027 Khaperkheda Unit -3 140 210 149.94 215 0.00028 Khaperkheda Unit -4 140 210 149.89 217 0.00029 Paras-2 30 55 35.53 55 0.00030 Paras-3 120 250 25.84 12731 Uran (Gas) 210 360 213.91 39632 Uran (WHR) 120 240 119.78 238 7.05133 Chandrapur Unit -1 105 210 82.90 180 0.00034 Chandrapur Unit -2 110 210 109.63 180 0.00035 Chandrapur Unit -3 125 210 118.39 213 0.00036 Chandrapur Unit - 4 125 210 122.27 210 0.00037 Chandrapur Unit -5 300 500 277.18 480 0.00038 Chandrapur Unit -6 30 500 21.58 440 0.00039 Chandrapur Unit -7 300 500 286.92 490 0.00040 Dahanu Unit-1 195.23 267 17.17241 Dahanu Unit-2 193.50 265 17.17242 RGPPL Block I 0 0 111.67 043 RGPPL Block II 600 900 179.87 740 0.00044 RGPPL Block III 0 0 0.00 0 15.674
Total (T) 5464 10130 5066.09 6994 346.986MAH. Wind Generation 366.57 0
+ Total (H+T+Wind) 5940 11438 5840.73 8293 392.782 TOTAL (H+T)
Exchanges (+) 2078.62Rest. En. Req. 10700 7919.35
(E) GOA
IPP Reliance 11.71 19 0.000
Exchanges 215.44
Rest. En. Req. 255 415 227.15 388 0.000
(F) DAMAN & DIU 139.76 198 0.000
(G) DNH 302.95 426 0.000
DD &DNH (T) 323 494 442.71 624 0.000
90 180
372 500
Actual Schedule
4.1/5
Auxillary Sr. Station Name Energy Peak Energy Peak Consumption No. (Gwh) (Mw) (Gwh) (Mw) (Gwh)(H) Central Sector
1. N.P.C.
1.1 TAPS Unit -1 106 160 112.44 160 15.6641.2 TAPS Unit -2 106 160 119.32 160 0.0001.3 TAPS Unit -3 300 480 190.29 262 59.3301.4 TAPS Unit -4 300 480 189.05 261 0.0001.5 KAPS Unit -1 95 125 0.06 262 18.4621.6 KAPS Unit -2 95 125 94.21 261 0.000
NPC Total 1002 1530 705.36 1366 0.0002. N.T.P.C.
2.1 KSTPS Unit-1 146.50 205 0.000 2.2 KSTPS Unit-2 154.40 204 0.000 2.3 KSTPS Unit-3 155.80 206 0.000 2.4 KSTPS Unit-4 370.00 508 0.0002.5 KSTPS Unit-5 354.10 506 0.0002.6 KSTPS Unit-6 337.20 503 0.000
KSTPS Total 1240 2100 1518.00 2118 92.5332.7 VSTPS Unit-1 152.75 215 0.0002.8 VSTPS Unit-2 153.41 218 0.0002.9 VSTPS Unit-3 153.35 214 0.000
2.10 VSTPS Unit-4 154.29 212 0.0002.11 VSTPS Unit-5 150.05 217 0.0002.12 VSTPS Unit-6 154.61 218 0.0002.13 VSTPS Unit-7 371.91 509 0.0002.14 VSTPS Unit-8 255.05 511 0.000
2.15 VSTPS Unit-9 82.34 507 0.000
2.16 VSTPS Unit-10 311.91 512 0.000VSTPS Total 2046 3260 1939.67 3322 137.592
3.1 -4 -SIPAT-4 329.50 506.00 3.2 -5 SIPAT-5 0.00 0.00
-SIPAT TOTAL 329.50 506.00 0.004.1 Kawas GT-1A 20.07 97 0.0004.2 Kawas GT-1B 20.35 102 0.0004.3 Kawas ST-1C 23.33 111 0.0004.4 Kawas GT-2A 38.10 100 0.0004.5 Kawas GT-2B 45.41 102 0.0004.6 Kawas ST-2C 47.45 110 0.000
KGPS Total 488 656 194.71 597 3.6935.1 Gandhar GT-1 82.98 134 0.0005.2 Gandhar GT-2 47.03 136 0.0005.3 Gandhar GT-3 41.25 132 0.0005.4 Gandhar ST-4 90.97 209 0.000
GGPS Total 409 657 262.23 599 5.8665.1 SSP RBPH - 1 32.92 180 0.000
5.2 SSP RBPH - 2 38.99 175 0.000
5.3 SSP RBPH - 3 40.61 176 0.000
5.4 SSP RBPH - 4 48.55 179 0.000
5.5 SSP RBPH - 5 31.52 179 0.000
5.6 SSP RBPH - 6 46.31 182 0.000
5.7 SSP CHPH - 1 4.30 26 0.000
5.8 SSP CHPH - 2 3.08 27 0.000
5.9 SSP CHPH - 3 4.63 27 0.000
5.10 SSP CHPH - 4 4.40 28 0.000
5.11 SSP CHPH - 5 2.20 29 0.000
SSP Total 920 1230 257.50 1207 0.1296.1 Pench Total 30 150 3.84 142 0.0606.2 Jindal Injection 240.84
(I) WESTERN REGION
Gross generation 17953.15(J) Availability 17595.93
Net Exchanges (+) -73.47 Energy Availability 20830 17522.46
Schedule Actual
- 4.2PEAK DEMAND - SCHEDULE VS ACTUAL FOR JULY 2008 ANNEX-4.2
State Anticipated Actual (MW)
Date Time Frequency
(MW) Catered UNSCH LS FC SCH LS Total
GUJARAT
Registered 8544 - - - 8544 25.07.08 1500 49.05
Restricted 10800 8399 1452 223 - 10074 08.07.08 1500 49.24
Unrestricted 10840 8544 1041 284 220 10089 25.07.08 1500 49.05
Min. Registered Demand 5713 5713 29.07.08 0100 49.20
MADHYA PRADESH
Registered 4199 - - - 4199 31.07.08 2000 49.25
Restricted 4700 4199 0 110 - 4309 31.07.08 2000 49.25
Unrestricted 5000 4061 0 131 713 4905 24.07.08 2000 49.08
Min. Registered Demand 2358 2358 02.07.08 0900 49.26
CHHATTISGARH
Registered 2308 2308 26.07.08 2000 49.33
Restricted 2100 2308 0 54 - 2362 26.07.08 2000 49.33
Unrestricted 2100 2087 37 69 254 2447 24.07.08 1900 49.05
Min. Registered Demand 1359 1359 12.07.08 1400 49.80
MAHARASHTRA
Registered 12021 - - - 12021 20.07.08 2100 49.20
Restricted 15400 11093 5957 419 - 17469 23.07.08 2100 48.92
Unrestricted 15800 11093 5957 419 400 17869 23.07.08 2100 48.92
Min. Registered Demand 9474 9474 28.07.08 0400 49.82
*GOA
Registered 415 388 - - 388 14.07.08 1930 49.13
Unrestricted 415 388 40 - - 428 14.07.08 1930 49.13
Min. Registered Demand 234 234 17.07.08 0400 49.41
DD
Registered 198 - - 198
Unrestricted 198 25 - - 223
Min. Registered Demand 87 87
DNH
Registered 426 - - 426 07.07.08
Unrestricted 426 36 - - 462 07.07.08
Min. Registered Demand 312 312 10.07.08
WESTERN REGION
Registered 25851 - - - 25851 24.07.08 2000 49.45
Restricted 31961 25065 6963 947 - 32975 23.07.08 2100 48.92
Unrestricted 32688 25065 6963 947 1251 34226 23.07.08 2100 48.92
Min. Registered Demand 19357 19357 29.07.08 0400 49.54 NOTE: LS = Load Shedding
PC/RM = Power Cuts/Regulatory MeasuresFC = Frequency CorrectionRegistered = Actual Demand MetRestricted = Registered + LS + FCUnrestricted = Registered + LS + FC + PC + Holiday Staggering + Recess Staggering.
4.3
ANNEX - 4.3
INTEGRATED OPERATION OF SYSTEM : JULY 2008
PARALLEL/RADIAL OPERATION
/
HRS. PERCENTAGE
1.0 PARALLEL
1.1 - MSETCL-GETCO 744.00 100.00
1.2 - - MSETCL-MPPTCL-CSEB 744.00 100.00
1.3 - - MPPTCL-CSEB-GETCO 744.00 100.00
1.4 - - - MSETCL-MPPTCL-CSEB-GETCO 744.00 100.00
1.5 - -CSEB-OSEB (WR-ER 220KV AC LINK) 744.00 100.00
1.6 - -CSEB-OSEB (WR-ER 400KV AC LINK) 744.00 100.00
2.0 2. RADIAL
2.1 - MPPTCL-UPSEB 744.00 100.00
2.2 - MPPTCL-RSEB 744.00 100.00
2.3 - CSEB-APSEB(HVDC) - -
2.4 - MSETCL-KEB - -
2.5 -W.REGION-N.REGION(HVDC) 744.00 100.00
2.6 -N.REGION-W.REGION(HVDC) 0.00 0.00
2.7 -N.REGION-W.REGION 744.00 100.00
(220KV AURAIYA-MALANPUR)
2.8 -W.REGION-S.REGION(HVDC) 743.30 99.91
2.9 -S.REGION-W.REGION (HVDC) 0.00 0.00
4.4
ANNEX. 4.4OPERATION OF INTERSTATE TIE LINES DURING JULY 2008
S. No.
NAME OF TIE LINE PLANNED FORCED OTHERS OPERATING
OUTAGE OUTAGE HOURS
: : :
HRS:MINS HRS:MINS HRS:MINS HRS:MINS
1 - 400KV BHILAI-KORADI 744 00
2 - 400KV BHILAI-B'VATI 744 00
3 - 400KV BHILAI - RAIPUR # 1 744 00
4 - 400KV BHILAI - RAIPUR # 2 744 00
5 - 400KV RAIPUR-B'VATI # 1 95:11 648 49
6 - 400KV RAIPUR-B'VATI # 2 377:32 366 28
7 - 400KV RAIPUR-B'VATI # 3 744 00
8 - 400KV SATPURA-KORADI 744 00
9 - 400KV KHANDWA - DHULE I 744 00
10 - 400KV KHANDWA - DHULE II 01:58 742 02
11 VINDHYACHAL HVDC LINK 744 00
12 BHADRVATI - RAMAGUNDAM(HVDC) 00:42 743 18
13 - 400KV INDORE-ASOJ I 16:10 727 50
14 - 400KV INDORE-ASOJ II 38:02 705 58
15 - 400KV JHANOR- VAPI 744 00
16 - 400KV VAPI - BOISAR 744 00
17 - -I 400KV TARAPUR-BOISAR-I 744 00
18 - -II 400KV TARAPUR-BOISAR-II 744 00
19 - -I 400KV TARAPUR-PADGHE-I 744 00
20 - -II 400KV TARAPUR-PADGHE-II 744 00
21 - 400KV BOISAR - PADGHE 744 00
22 - 400KV ASOJ - SSP 744 00
23 - 400 KV KASOR- SSP 18:49 721 58
24 - 400KV KOLHAPUR - MAPUSA I 141:30 602 30
25 - 400KV KOLHAPUR - MAPUSA II 220:55 523 05
26 - 400KV RAIGARH - ROURKELA I 744 00
27 - 400KV RAIGARH - ROURKELA II 744 00
28 ( )- 220KV KORBA (E) - BUDHIPADAR III 744 00
29 - 220KV NASIK-NAVSARI I 103:20 17:15 623 25
30 - 220KV NASIK-NAVSARI II 744 00
31 - 220KV TAPS-BHILAD 17:44 726 16
32 - 220KV TAPS-VAPI 21:06 722 54
33 - 220 kV AMBHETI (PG) - VAPI 744 00
34 - 220 kV AMBHETI - BHILAD I 744 00
- 220 kV AMBHETI - BHILAD II 01:24 742 36
- 220 kV AMBHETI - BHILAD III 01:21 742 39
35 - 220KV BARSOOR-LOWER SILERU 00 00
36 - 220KV AURAIYA-MALANPUR 744 00
37 - 220KV UJJAIN-KOTA I 00 00
38 - 220KV UJJAIN-KOTA II 00 00
39 - 220KV KOLHAPUR-PONDA I 33:42 710 18
40 - 220KV KOLHAPUR-PONDA II 08:26 735 34
41 - 220KV NAGJHARI-PONDA I 00:06 743 54
42 - 220KV NAGJHARI-PONDA II 92:20 651 40
43 - 132KV G'SAGAR-R.P'SAGAR I 00 00
44 - 132KV G'SAGAR-R.P'SAGAR II 744 00
45 - 132KV SAPALGARH-SAWAIMADHOPUR 00 00
46 - 132KV MORWA-RIHAND 00 00
47 - 132KV PENCH-KANHAN NA
48 - 66KV PICHHORE-MATATILLA NA
1 of 2
, ,
1 / / ( )1 Declared Capcity (ex-bus) of Central Gen. Stns/Dedicated CG Stns/Jointly owned Stns & entitlement of beneficieries (MUs)
( ) A. Central Gen. Stns. Dec. Cap. GUVNL MPPGCL CSEB MSPGCL GOA DD DNH HVDC TOTAL
Korba STPS 1411.914 259.963 292.825 156.759 464.233 141.191 44.139 52.803 1411.914I Vindhyachal STPS-I 828.739 163.872 269.969 10.941 307.697 23.021 15.410 35.675 2.155 828.739II Vindhyachal STPS-II 588.776 149.776 172.767 7.869 215.169 7.065 10.483 25.647 588.776III Vindhyachal STPS-III 375.887 105.827 82.366 44.543 114.615 3.759 7.501 17.276 375.887
Kawas GPP 455.829 136.905 106.465 6.086 162.861 0.000 8.131 35.381 455.829Gandhar GPP 263.227 98.980 52.267 3.546 92.407 0.000 4.729 11.298 263.227Sipat 312.550 90.183 50.672 53.602 95.303 3.125 5.924 13.740 312.550Kakrapar APS* 75.805 22.714 17.472 1.023 27.160 2.584 1.478 3.374 75.805Tarapur APS 3&4* 318.152 85.661 59.110 18.435 130.700 3.240 6.231 14.775 318.152
( ) B. Dedicated CG Stations * Actual injection * Indira Sagar* 186.594 186.594 186.594
( ) C. Jointly owned Stations
Tarapur APS 1&2* 215.202 107.601 0.000 0.000 107.601 0.000 0.000 0.000 215.202SSP* 252.178 40.348 143.741 0.000 68.088 0.000 0.000 0.000 252.178Pench* 3.741 2.494 0.000 1.247 0.000 0.000 0.000 3.741
( ) Total (excl. Indira Sagar) 5102.001 1261.830 1250.150 302.805 1787.081 183.986 104.027 209.967 2.155 5102.001* Actual injection
/ /2 Generation Schedule (ex-bus) of Central Gen. Stations/Dedicated CG Stations/Jointly owned Stations & schedule of benificieries (MUs)
( ) A. Central Gen. Stns. Schedule GUVNL MPPGCL CSEB MSPGCL GOA DD DNH HVDC TOTAL
Korba STPS 1411.913 259.963 292.825 156.759 464.233 141.191 44.139 52.803 1411.913I Vindhyachal STPS-I 828.739 163.872 269.969 10.941 307.697 23.021 15.410 35.675 2.155 828.739II Vindhyachal STPS-II 588.776 149.776 172.767 7.869 215.169 7.065 10.483 25.647 588.776
III Vindhyachal STPS- III 375.616 104.881 82.366 44.543 115.116 3.759 7.501 17.451 375.616Kawas GPP* 192.268 28.392 19.701 1.626 113.870 0.000 5.592 23.088 192.268Gandhar GPP 252.314 88.198 46.158 3.501 98.404 0.000 4.750 11.303 252.314Sipat 312.550 90.183 50.672 53.602 95.303 3.125 5.924 13.740 312.550Kakrapar APS* 75.805 22.714 17.472 1.023 27.160 2.584 1.478 3.374 75.805Tarapur APS 3&4* 318.152 85.661 59.110 18.435 130.700 3.240 6.231 14.775 318.152
( ) B. Dedicated CG StationsIndira Sagar* 186.594 186.594 186.594
( ) C. Jointly owned Stations * Actual injection * Tarapur APS 1&2* 215.202 107.601 0.000 0.000 107.601 0.000 0.000 0.000 215.202SSP* 252.178 40.348 143.741 0.000 68.088 0.000 0.000 0.000 252.178Pench* 3.741 0.000 2.494 0.000 1.247 0.000 0.000 0.000 3.741Total (excl. Ind. Sagar) 4827.255 1141.589 1157.275 298.299 1744.587 183.986 101.508 197.855 2.155 4827.255
* Actual injection
/ ( )
3 Schedule for interregional exchanges/bilateral exchanges (MUs)
/ Region/State Schedule GUVNL MPPGCL CSEB MSPGCL GOA DD DNH HVDC TOTALImport SDLs through ER 39.317
ER-NTPC 0.000 14.972 9.924 51.629 0.796 4.366 4.366 86.054AP-NER(TPTCL) 0.000 0.000 0.000 0.155 0.000 0.000 0.000 0.155
NGLD(TPCL) 0.000 0.000 0.000 6.769 0.000 0.000 0.000 6.769NGLD(TPC MSEB) 0.000 0.000 0.000 5.589 0.000 0.000 0.000 5.589
DVC(LTOA) 0.000 26.935 0.000 0.000 0.000 0.000 0.000 26.935AP-NER(MPSEB) 0.000 0.000 5.318 0.000 0.000 0.000 0.000 5.318
AP-NER(TPC MSEB) 0.000 0.000 0.000 19.444 0.000 0.000 0.000 19.444PSEB (NVVNL) 0.000 -2.874 0.000 -32.667 0.000 0.000 0.000 -35.541PSEB (LANCO) 0.000 -72.576 0.000 0.000 0.000 0.000 0.000 -72.576AP-NER(TPCL) 0.000 0.000 0.000 18.967 0.000 0.000 0.000 18.967CESC(LANCO) 0.000 -7.229 -0.142 -1.304 0.000 0.000 0.000 -8.675
PSEB (JSW PTL) 0.000 -47.061 -4.496 0.000 0.000 0.000 0.000 -51.557HPGL(LANCO) 0.000 0.000 -1.473 0.000 0.000 0.000 0.000 -1.473
CAEDCL(ASEB)(TPTCL) 0.000 0.000 0.000 18.852 0.000 0.000 0.000 18.8520KSTPP-ER(NVVNL) 0.000 0.000 0.000 14.871 0.000 0.000 0.000 14.8710
NBVL(TPTCL) 0.000 0.000 0.000 1.973 0.000 0.000 0.000 1.9730UPCL(PTC) 0.000 0.000 -25.374 0.000 0.000 0.000 0.000 -25.3740
NGLD (TPCL) 0.000 0.000 0.000 6.769 0.000 0.000 0.000 6.7691WBSEB (NVVNL) 19.261 0.000 0.000 -2.158 0.000 0.0000 0.0000 17.1026
WBSEB (PTC) 0.000 0.000 0.000 0.384 0.000 0.000 0.000 0.384HIRAKUD 0.000 0.000 1.299 0.000 0.000 0.000 0.000 1.299
INDIAN ENERGY EXCHANGE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 4.030
4.5
DETAILS OF ENTITLEMENT/SCHEDULE/DRAWAL BY THE CONSTITUENTS FROM CENTRAL SECTOR STATIONS AND EXCHANGES FOR THE MONTH OF JULY 2008
( )
Out Side Region*0.000
2 of 2
/ Region/State Schedule GUVNL MPPGCL CSEB MSPGCL GOA DD DNH HVDC TOTALImport SDLs through SR -23.419
SSSL(TPTCL) 0.00 0.00 0.00 0.11 0.00 0.00 0.00 0.111GOA(SR) 0.00 0.00 0.00 0.00 0.40 0.00 0.00 0.401
DSCL(RETL) 4.57 0.00 0.00 0.00 0.00 0.00 0.00 4.567ICPL(RETL) 4.60 0.00 0.00 0.00 0.00 0.00 0.00 4.600
KONARK(TPCL) 0.00 0.00 0.00 1.07 0.00 0.00 0.00 1.065KONARK(TPC MSEB) 0.00 0.00 0.00 1.22 0.00 0.00 0.00 1.215
KSEB (NVVNL) 0.00 0.00 0.00 32.32 0.00 0.00 0.00 32.323APPCC(TPTCL) 0.00 -3.36 0.00 -1.05 0.00 0.00 0.00 -4.407
GEL(GEL) 0.00 0.00 0.00 1.58 0.00 0.00 0.00 1.580APPCC (LANCO) 0.00 -10.40 -1.02 0.00 0.00 0.00 0.00 -11.416TNEB (NVVNL) 0.00 -5.67 0.00 0.00 0.00 0.00 0.00 -5.670
KSEB (PTC) 0.00 0.00 -27.22 0.00 0.00 0.00 0.00 -27.216ARKAY(TNEB)(PTC) 0.00 0.00 0.00 0.28 0.00 0.00 0.00 0.281
APPCC(PTC) -4.06 0.00 0.00 0.00 0.00 0.00 0.00 -4.064INDIAN ENERGY EXCHANGE 0.00 0.00 0.00 0.00 0.00 0.00 0.00 -16.791
Import SDLs through NR -234.985
ANTA(NVVNL) 0.00 0.00 0.00 2.69 0.00 0.00 0.00 2.694RANASUGAR(NR)(INSTINCT) 0.00 0.00 0.00 2.09 0.00 0.00 0.00 2.088
JAPEE AYODHYA (UP) JAYPEE(MPSEB) 0.00 -0.83 0.00 0.00 0.00 0.00 0.00 -0.827NTPC DADRI(NVVNL) 0.00 0.00 0.00 8.39 0.00 0.00 0.00 8.392
JAPEE AYODHYA (UP) JAIPRAKASH(MPSEB) 0.00 -0.04 0.00 0.00 0.00 0.00 0.00 -0.039BSES(DTL) (TPTCL) 0.00 0.00 0.00 0.24 0.00 0.00 0.00 0.238
JP CEMENT (UP) (JAIPRAKASH MPSEB) 0.00 -0.67 0.00 0.00 0.00 0.00 0.00 -0.675BSES YM (DTL) (KPDPL) 0.00 0.00 0.00 1.75 0.00 0.00 0.00 1.747
NTPC AURAIYA(NVVNL) 0.00 0.00 0.00 2.57 0.00 0.00 0.00 2.573JP CEMENT (UP) (JAYPEE MPSEB) 0.00 -0.54 0.00 0.00 0.00 0.00 0.00 -0.544
BSES YM (DTL) (LANCO) 0.00 0.00 0.00 0.24 0.00 0.00 0.00 0.237DADRI-NR(NVVNL) 0.00 0.00 0.00 1.72 0.00 0.00 0.00 1.719
MATATHILLA(HYDRO)(LTOA) 0.00 5.24 0.00 0.00 0.00 0.00 0.00 5.240HPGCL(LANCO) 0.00 -6.13 0.00 0.00 0.00 0.00 0.00 -6.126HPGCL(JSWPTL) 0.00 0.00 -36.06 0.00 0.00 0.00 0.00 -36.062
PSEB(NVVNL) 0.00 -6.41 0.00 -59.62 0.00 0.00 0.00 -66.027HPGCL(HPGCL) 0.00 -32.89 0.00 0.00 0.00 0.00 0.00 -32.886
HPGCL(AEL) 0.00 -76.55 0.00 0.00 0.00 0.00 0.00 -76.545NPCL (AEL) 0.00 -5.09 0.00 0.00 0.00 0.00 0.00 -5.093
PSEB(JSWPTL) 0.00 0.00 -8.03 0.00 0.00 0.00 0.00 -8.030PSEB(LANCO) 0.00 0.00 -17.58 0.00 0.00 0.00 0.00 -17.581
HIMACHAL(TPTCL) 0.00 0.00 0.00 14.51 0.00 0.00 0.00 14.507RIHAND(HYDRO)(LTOA) 0.00 5.04 0.00 0.00 0.00 0.00 0.00 5.042UTTARAKAND(GUVNL) 25.10 0.00 0.00 0.00 0.00 0.00 0.00 25.099
NDPL(DTL)(AEL) 0.00 0.00 0.00 -68.57 0.00 0.00 0.00 -68.574RANASUGAR(NR)(RANASUGAR(NR) 0.00 0.00 0.00 0.20 0.00 0.00 0.00 0.196
PSEB(AEL) -11.91 0.00 0.00 0.00 0.00 0.00 0.00 -11.907INDIAN ENERGY EXCHANGE 0.00 0.00 0.00 0.00 0.00 0.00 0.00 26.159
Bi-lateral SDLs
MPSEB. (TPC MSEB) 0.000 0.000 -0.379 0.000 0.379 0.000 0.000 0.000 0.000MPSEB (LANCO) 0.000 0.000 -44.550 0.000 43.950 0.600 0.000 0.000 0.000MPSEB (TPTCL) 0.000 0.000 -11.615 0.000 11.615 0.000 0.000 0.000 0.000
REALISPAT CSEB (LANCO) 0.000 1.659 0.000 -6.428 4.769 0.000 0.000 0.000 0.000MPSEB (TPCL) 0.000 0.000 -3.547 0.000 3.547 0.000 0.000 0.000 0.000GOA (LANCO) 0.000 0.000 0.900 0.000 0.000 -0.900 0.000 0.000 0.000
CSEB (PTC) 0.000 0.000 0.000 -12.175 12.175 0.000 0.000 0.000 0.000MPSEB (MPSEB) 0.000 0.000 -0.244 0.000 0.244 0.000 0.000 0.000 0.000
MPSEB (AEL) 0.000 142.200 -142.200 0.000 0.000 0.000 0.000 0.000 0.000JPL (AEL) 0.000 86.400 0.000 -86.400 0.000 0.000 0.000 0.000 0.000
MIEL CSEB (AEL) 0.000 12.075 0.000 -12.075 0.000 0.000 0.000 0.000 0.000JPAL CSEB (LANCO) 0.000 3.040 0.000 -12.021 8.981 0.000 0.000 0.000 0.000
JPL (LANCO) 0.000 0.000 0.000 -4.560 4.560 0.000 0.000 0.000 0.000JPL (MSEB) 0.000 0.000 0.000 -74.400 74.400 0.000 0.000 0.000 0.000
I E EXCHANGE(MSEDCL) 0.000 0.000 0.000 0.000 12.987 0.000 0.000 0.000 12.987
Total Import 773.449 298.901 53.089 16.542 393.977 1.797 4.366 4.366 773.449Total Export 992.536 15.971 480.842 329.454 165.370 0.900 0.000 0.000 992.536
/ Net Imp. (+)/Exp. (-) -219.088 282.930 -427.753 -312.912 228.607 0.897 4.366 4.366 -219.0884
Total GUVNL MPPGCL CSEB MSPGCL GOA DD DNH HVDC TOTAL
4882.913 1544.760 822.397 -10.108 2015.688 184.883 108.393 214.334 2.155 4882.9135 Total Sdl. incl. IR/ bi-lateral
exch. Sdl. 4608.167 1424.519 729.523 -14.613 1973.194 184.883 105.874 202.221 2.155 4608.167
6 Total Drl excl. Tr. Loss 4667.290 1364.090 590.954 153.568 1971.727 166.100 132.573 287.372 0.906 4667.2907 Total Drl incl. Tr. Loss 4920.313 1438.040 622.991 161.893 2078.618 175.105 139.760 302.951 0.955 4920.3138 Pooled loss in WR System 253.0239
Actual Inj. - WR Stns. KSTPS VSTPS-1& 2 VSTPS-3 KGPS GGPS KAPS TAPS SSP PENCH TOTAL
( ) (MUs) 1425.467 1425.568 375.817 190.853 256.366 75.805 533.355 252.178 3.741 5094.432
10 Actual IR Exchanges NR Imp NR Exp NR Net SR Imp SR Exp SR Net ER Imp ER Exp ER Net Total Net
( ) (MUs) 48.456 232.734 -184.278 55.194 134.812 -79.618 134.476 44.699 89.777 -174.119IR Exchange Schedule NRI sdl NRE sdl Net NR sdl SRI sdl SREsdl Net SR sdl ERI sdl ERE sdl Net ER sdl Net WR sdl
( ) (MUs) -140.394 -126.280 -266.674 102.861 -94.591 8.270 39.317 0.000 39.317 -219.088
11
Total Entitlement incl. IR and bi-lateral exchange schedule
4.5
/ 4.6
DETAILS OF INTERSTATE/INTER-REGIONAL EXCHANGES FOR THE MONTH OF JULY 2008 Annex-4.6
From/ To
A Interstate/Inter-regional Schedules included in ISGS
GUVNL MPPGCL CSEB MSPGCL GOA DD DNH NR SR ER WR TOTAL
1 GUVNL 0.000
2 MPPGCL 142.200 59.735 0.600 202.535
3 CSEB 13.734 25.925 39.659
4 MSPGCL 0.000
5 GOA 0.900 0.900
6 JPL 89.440 78.960 168.400
7 N.Region (WR end) 48.456 48.456
8 S. Region (S. Bus) 55.194 55.194
9 E. Region (WR end) 134.476 134.476
10 W.Region (WR end) 232.734 134.812 44.699 412.245
11 NTPC Injection 3988.512
12 NPC Injection 609.160
13 Total ISGS drawal from the Grid incl. interregional/ bi-lateral exchange , UI and trans. loss
1438.040 622.991 161.893 2078.618 175.105 139.760 302.951
B Interstate/IR Exchanges not included in ISGS
14 Karnataka 40.336 40.336
15 UPPCL 0.000 0.000
16 RVPNL 47.68 47.680
17 UPPCL ( Excess Drawn From Rajghat 12.630 12.630
18 Kota - Ujjain 0.000 0.000
19 Total B (13 to 17) 0.000 60.310 0.000 0.000 40.336 0.000 0.000 100.646
C Net Exchange (12+18) 1438.040 683.301 161.893 2078.618 215.441 139.760 302.951 5020.003
D Total Imp. by WR 338.772
E Total Export by WR 412.245
F Net Exchange (D-E) -73.473
G Energy wheeled by WR
20 ER export to SR0.000
0.000
21 SR export to NR via ER/WR0.000
0.000
22 SR export to NR via WR126.280
126.280
23 ER export to NR via WR0.000
0.000
24 NR export to SR via WR94.591
94.591
25 ER export to SR via WR0.000
0.000
26 ER export to SR via NR/WR0.000 0.000
0.000
27 NER export to NR via WR0.000
0.000
4.7Annex-4.7
Sl. No.
1
1.1
At the end of the month
1.2Corresponding Figure of themonth Last Year
Gandhisagar Koyna
Particulars
Levels in Mtrs.
Ukai
NHDC
Indira Sagar
GUVNL
MPPGCL
MSEGCL
LEVEL OF MAJOR RESERVOIRS IN WESTERN REGION AT THE END OF MONTH OF JULY 2008
392.97 652.49
89.42 385.88 645.72
99.45
244.26
252.14
4.8a
ANNEX-4.8a
/
Month/Year ESSAR GPEC GIPCL Gujarat Total+
KGPS+GGPS
NTPC Total Grand Total
(MUs) (MUs) (MUs) (MUs) (MUs)(MUs)
(MUs)
0.000 0.000 0.000 0.000 92.981 92.981 92.981
0.000 0.000 0.000 0.000 133.350 133.350 133.350
0.000 0.000 0.000 0.000 291.570 291.570 291.570
0.000 0.000 0.000 0.000 271.700 271.700 271.700
0.000 0.000 0.000 0.000 789.601 789.601 789.601
GUJARAT NTPC
Month-wise loss of Generation due to non-utilisation of high cost fuel for the Year 2008-09-
Annex 4.8 b
State
1.0 GUJARAT
Dhuvaran TPS 0.000 0.000 0.000 0.000 0.000Ukai 0.000 0.000 0.000 0.000 0.000
Gandhinagar 0.000 0.000 0.000 0.000 0.000Wanakbori 0.000 0.000 0.000 0.000 0.000
Sikka 0.000 0.000 0.000 0.000 0.000Kutch Lig. 0.000 0.100 0.517 1.118 1.735
TPAECo. 0.000 0.000 0.000 0.000 0.000Surat Lig. 0.000 0.000 0.000 0.000 0.000
Coal Total 0.000 0.100 0.517 1.118 1.735Dhuvaran GPS 0.000 0.000 0.000 2.630 2.630
TPAEC Gas 8.215 4.891 4.747 0.000 17.853Utran 0.000 0.096 0.607 26.147 26.850Gas Total 8.215 4.987 5.354 28.777 47.333
Gujarat Total 8.215 5.087 5.871 29.895 49.068
2.0 MP Amarkantak 0.000 0.000 0.000 0.000 0.000 Birsinghpur 0.000 0.000 0.000 0.000 0.000
Satpura 0.000 0.000 0.000 0.000 0.000 MP Total 0.000 0.000 0.000 0.000 0.000
3.0 CHHATISGARH( ) Korba (E) 0.000 0.000 0.000 0.000 0.000( ) Korba (W) 0.000 0.000 0.000 0.000 0.000
Cgarh Total 0.000 0.000 0.000 0.000 0.000
4.0Koradi 0.000 0.000 0.000 0.000 0.000Nasik 0.000 0.000 0.000 0.000 0.000 Bhusawal 0.000 0.000 0.000 0.000 0.000Parli 0.000 0.000 0.000 0.000 0.000
Chandrapur 0.000 0.000 0.000 0.000 0.000 Paras 0.000 0.000 0.000 0.000 0.000
Khaperkheda 0.000 0.000 0.000 0.000 0.000Dahanu 0.000 0.000 0.000 0.000 0.000
Coal Total 0.000 0.000 0.000 0.000 0.000 Uran (Gas) 234.835 192.515 201.092 294.961 923.403
Trombay Gas 5.120 4.440 4.740 0.000 14.300Gas Total 239.955 196.955 205.832 294.961 937.703Mah. Total 239.955 196.955 205.832 294.961 937.703
5.0 N.T.P.C.
KSTPS 0.000 0.000 0.000 0.000 0.000 VSTPS 0.000 0.000 39.307 14.064 53.371
Coal Total 0.000 0.000 39.307 14.064 53.371 Kawas Gas 3.996 0.000 0.000 0.000 3.996 Gandhar Gas 4.585 0.000 14.532 168.521 187.638Gas Total 8.581 0.000 14.532 168.521 191.634
NTPC Total 8.581 0.000 53.839 182.585 245.005WR Coal Total 0.000 0.100 39.824 15.182 55.106
WR Gas Total 256.751 201.942 225.718 492.259 1176.670WR Total 256.751 202.042 265.542 507.441 1231.776
4.8b
Loss of Generation in Western Region due to Coal and Gas shortage for the Year 2008-09
ANNEX. –6 Status of the Follow up action on the Recommendations of the Committee headed by Shri A. Velayutham, then Member Secretary, WREB on the Grid Disturbance of 14.10.2000 in MP System of Western Region: (As on 12.08.08)
Only the following recommendations made by the above Committee are in process of implementation and other recommendations implemented/continuously monitored in WREB OCC/PCM/Study Committee forum
S.No. Recommendation Present Status
27 Sub Committee for islanding schemes for every generating stations with radial loads
The Sub Committee met on 14.7.2004 and recommended the following islanding schemes. (i) GUVNL KLTPS scheme dropped due to increased grid connectivity.(ii) MPSEB – Islanding scheme for Amarkantak units of 30 MW. (iii) CSEB- Korba(E) one unit (iv) NTPC – Islanding at KSTPS and VSTPS not feasible (v) MSETCL – finalised islanding scheme for Uran and is in service. Nasik islanding is under formulation by MSETCL/MSGCL. Islanding sub-committee met on 25.11.2005 to discuss scheme for TAPS unit 4 islanding. Working group had suggested some modified schemes for implementing the same after discussing the same. This may be taken up in the next PCM meeting of WRPC.
Status of the Follow up action on the Recommendations of the Committee headed by Shri A. Velayutham, then Member Secretary, WREB on Grid Disturbance of 18th, 23rd and 29th May 2002 in Western region: (As on 12.08.08)
All the recommendations implemented. Some of the recommendations are continuously monitored in WREB OCC/PCM/Study Committee forum
Status of the Follow Up action on the Recommendations of the Committee headed by Shri R.K.Narayan, Former CMD, POWERGRID on the grid disturbance of 30.07.02 in the Western Region : (As on 12.08.08) Only the following recommendations made by the above Committee are in process of implementation and other recommendations implemented/continuously monitored in WREB OCC/PCM/Study Committee forum
S.No.
Recommendation Present Status
9 The present islanding scheme does not provide for saving Tarapur Atomic Power Plant. Considering poisoning of nuclear reactors delays power availability to the grid, WREB / WRLDC should examine the feasibility of including TAPP in the scheme to save it in case of grid disturbance
As per item 27 above.
Status on implementation of Recommendations of the Committee headed by Shri A. Velayutham, then Member Secretary, WREB on Grid Disturbance of 5-11-2003 and 7-11-2003 in Western region: (As on 12.08.08)
All recommendations made by the above Committee are implemented/continuously monitored in WREB OCC/PCM/Study Committee forum
Status of the Follow up action on the Recommendations of the Committee headed by Shri A. Velayutham, then Member Secretary, WREB on Grid Disturbance of 6-12-2003 in Western region: (As on 12.08.08)
All recommendations made by the above Committee are implemented/continuously monitored in WREB OCC/PCM/Study Committee forum
Status of the Follow up action on the Recommendations of the Committee headed by Shri A. Velayutham, then Member Secretary, WREB on Grid Disturbance of 5-02-2004 in Western Maharashtra of WR : (As on 12.08.08)
S.No. Recommendation Present Status
5.14
It is preferred to have an islanding scheme with part splitting of units at Nasik TPS between GUVNL and MSTCL. Similarly for TAPS, the scheme may be with one or both units with GUVNL. The sub-committee on islanding may study these proposals of islanding so as to benefit restoration.
As in item 27 above.
Status of the Follow up action on the Recommendations of the Committee headed by Shri S. Sivan, then Member Secretary, WREB on Grid Disturbance of 27-02-2005 in Western Maharashtra of WR : (As on 12.08.08)
All recommendations made by the above Committee are implemented/continuously monitored in WREB OCC/PCM/Study Committee forum
Status of the Follow up action on the Recommendations of the Committee headed by Shri Manjit Singh, then Member Secretary I/c, WREB on Grid Disturbance of 21-09-2005 and 26-09-2005 in Western Maharashtra of WR : (As on 12.08.08)
S.No. Recommendation Present Status
9.2.1
Arrangement for continuing transfer of power over the HVDC Chandrapur-Padghe link from Eastern to Western part of the Grid must be made in case of complete loss of supply at Chandrapur TPS subs-station, as recommended earlier in WREB forum.
Issue of release of land for establishment of new 400 kV s/s at Chandrapur is under consideration by MAHAGENCO. MAHAGENCO had indicated their readiness for sparing the land Thereafter further needful action would be taken
9.2.5
The protection and switchgear equipment of high capacity EHV substations at Padghe and Kalwa should operate selectively and reliably. To ensure this Committee recommends the following:-
i) The existing protection scheme at these substations should be reviewed by an expert group within three months to prevent mal-operations of relays in future.
ii) All the existing 220 kV minimum oil circuit breakers should be replaced with SF6 circuit breakers. This should be done in time bound manner.
At the above-mentioned substations all the existing protective relays should be replaced with modern numerical relays in a time bound manner.
(i) A MSTECL committee was set up to review existing protection schemes at 400 kV Kalwa and Padghe S/S. Necessary action as per its recommendations is being taken by MSETCL. MSETCL has taken up work of providing Substation Monitoring system (SMS) at Kalwa and Padghe S/Ss, which was likely to complete by Dec 2007. Confirmation on completion status of the same is awaited from MSETCL.
(ii) R&M schemes for Kalwa and Padghe S/S sanctioned and R&M works are being taken up accordingly.
R&M work Padghe Completed. 9.2.6
All EHV substations should be maintained well by adopting the best-known practices. Preventive Maintenance aspects of important EHV substations, Padghe and Kalwa in particular, should be paid due attention and the same may not be compromised because of fund constraints existing, if any.
Maintenance manual prepared by experts is finalized and sent to all CEs. The Computerised Maintenance Support Systems (CMSS) has been developed on experimental basis for 400/220 kV Koradi s/s. The model is being studied and would be implemented at all EHV substations after incorporating additional necessary requirements. The CMMS was covered in ERP tender, which was expected to be finalised in Jan. 2008 as intimated by MSETCL. Further details concerning coverage under CMMS awaited from MSETCL.
9.2.8
The quantum of load relief obtained in Western Maharashtra under AUFLS was much less than the planned. The reasons for inadequate operation of under-frequency and df/dt relays may be looked into by Maharashtra. As the major load centres fall in Western Maharashtra, higher quantum of load relief than the existing quantum of 1095 MW should be implemented in this system. This load relief should be dominant at frequency settings of 48.2 Hz and 48.0 Hz.
MSETCL has taken up/ is taking up necessary corrective measures to fulfill the inadequacies observed. 140 nos modern numerical UFT and df/dt relays have been procured and the installation & commissioning of these relays is in progress and is in advance stage of completion to ensure reliable operation and to meet additional requirements, additional 50 nos. of relays are also ordered, delivery for which was expected soon as intimated by
MSETCL. Current
details on status awaited from MSETCL.
9.2.9
Committee observed that upper and lower East-West EHV corridors in Maharashtra network require to be interconnected with additional strong EHV connections. This shall provide alternative path when transmission bottlenecks prevail at any time in one of the corridors. MSETCL may carry out system study in this regard in consultation with Power System Planning group of CEA.
Desired studies have been carried out. Results sent to PGCIL and CEA for their review. The response is awaited as was intimated by MSETCL. Current status on the same is awaited from MSETCL.
9.2.10
One pole of Chandrapur-Padghe HVDC link is out since August 2005 due to converter transformer problem. The availability of both the poles is essential for reliability of system. The restoration of the pole under outage should be expedited by Maharashtra. The Committee stresses the need for availability of two spare units of converter transformers (one each at both ends) as recommended earlier in WREB forum.
HVDC Pole-II has been recommissioned on 04.04.06. One repaired transformer ABB make is kept at Chandrapur end as spare. One no. converter transformer to be kept as spare unit at Padghe which was under repairs at BHEL's works Bhopal since March 2007 was received at Padhge after repairs in Aug 2007 and its installation was to complete in Oct 2007. Orders for one no. additional spare HVDC converter transformer at each station ( as a second spare unit) were placed on M/s ABB in June 2006. The same is available at Padghe. Implemented.
Status of the Follow up action on the Recommendations of the Committee headed by Shri Santosh Kumar, then Member (GO&D), CEA on Grid Disturbance of 25-02-2007 and 28-02-2007 in Western Maharashtra of WR : (As on 12.08.08)
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(i) Inadequate data: The Committee recommends that the monthly status on the healthiness of DRs (with time stamping status) and the sequential event logging devices at each of the sub-stations/generating station is checked and certified by the concerned substation/generating stations in-charge, and confirmed to RPC secretariat. In case of non-availability of data from any of the important sites, following a disturbance, specific responsibilities may be fixed on the concerned personnel.
WR Constituents are regularly furnishing the consolidated information on monthly basis in this specified format in every OCC meeting.
(ii) Committee expresses its concern on deletion of some of the data available on REL 521 relays installed on Padghe-Nagothane lines at 400 kV Padghe sub-station. Committee recommends that following any grid disturbance, all data should be frozen,
WR constituents have noted this requirement and have been taking needful action in this regard.
downloaded and dispatched to RPC and RLDC within 24 hours for further analysis at RPC level
(iii) SCADA data pertaining to the time of tripping of lines and
generating units received from the various RTU’s must be time stamped at the RTU itself.
WR constituents have noted this requirement and have been taking needful action in this regard. MSETCL intimated that R&M and upgradation works of SCADA &EMS at Kalwa and Ambazari are envisaged, which incorporate above desired features.
(iv) The sequence of events (SOE) data is generated from the trip
relays activating the circuit breakers and is time stamped at RTU level and also time synchronised with GPS. Presently, the SOE data is not available from many RTUs or the required process connections are not made at the sites. Considering importance of the SOE data, all the state and central sector utilities should complete the process connections to RTU, within a period of six months.
WR constituents have noted this requirement and have been taking needful action in this regard. MSETCL intimated that work for provision under substation Monitoring System (SMS) for 26 nos S/Ss in the State is in progress. Also provision of a BCU based S/S Automation System in new sub-stations, which incorporates above features is being made.
(v) Both Main- I and Main –II protection on 400 kV Padghe- Nagothane Ckt-I is provided by ABB make REL 521 relays with same characteristic and settings thereby defeating the purpose of providing selectivity and discrimination of the fault. In line with Section 2 of CBIP Publication 274 of November 1999, Main-I and Main-II protection should be of different types and not necessarily of different make.
MSETCL intimated that on 400 kV Padghe- Nagothane ckt-I, Main-I and Main-II protections have been provided with different characteristic and settings at Nagothane end only. One of the REL 521 Main-I and Main-II relays provided at Padghe end is being replaced with Siemens make relay. MSETCL further intimated that the feeders having similar Main-I and Main-II characteristics, in respect of Nagpur, Nasik and Vashi Circles require similar provision. MSETCL is requested that this recommendation for such locations in the State may be implemented expeditiously and status on needful action taken intimated.
(vi) The Committee observed that distance relay REL 521 does not have the feature of recording switching off of auxiliary DC supply to the relay as an internal event among recording of other related relay supervision parameters. For the grid disturbance of 25.2.2007, the time of switching off of DC auxiliary supply was
MSETCL intimated that this provision has been made under SMS for 400 kV Padghe, Kalwa, Kharghar, Nagothane and New Koyna S/Ss. Other constituents of WR shall also ensure availability of this provision in line ensure availability of this provision in line
very crucial information, which was not available. The possibility of incorporating the time of switching off of DC auxiliary supply as an internal event recording, may be taken up with the manufacturer.
with recommendation of the PCM of WRPC, as above. In 101st PCM of WRPC held on 27.6.2008, MSETCL indicated that as per M/s ABB's reply that whenever DC supply is switched off, relay can not function and hence event can not be stored “DC off “ as an internal event in a memory, so suggestion made by enquiry committee cannot be implemented. Committee felt that reply of M/s ABB was satisfactory and recommended that suggestions made in 100th and 101st PCM’s to overcome the problem as follows may be implemented: - " As an alternative we can wire up watch dog contacts available on fascia to log as an event on SER provided i sub-stations. For future procurement this requirement may be added in the specification of relays itself. "
(vii) The triggering of disturbance recorders at Padghe substation gets initiated only with the relay operation. Therefore, disturbance recording would not take place if the relay has not operated. The Committee recommends that the DRs should also have analog triggering signal from voltage/current/frequency threshold to ensure generation of DR data.
In 101st PCM held on 27.6.2008, MSETCL, Nasik and Vashi had informed that they have implemented the decisions in most of S/Ss. All remaining constituents/utilities are requested to follow the same and status on the needful action taken in this regard intimated.
(viii) The Committee expresses its concern that 400kV Padghe substation does not have compatible device to download the disturbance data recorded from the memory of the numerical distance relays installed on 400kV lines. The Committee recommends that every sub-station having numerical relays be provided with compatible data downloading device to facilitate analysis of the vital information.
MSETCL intimated that data down loading facility from numerical relays has been included in their Substation Monitoring Schemes (SMS) and is expected to be made available from Oct' 2008 onwards. It further intimated that Vashi, Nasik and Nagpur circles of MSETCL have provided laptops at all the S/s for downloading the data. GETCO has confirmed that data down loading facility has been made available at all the S/s.
PGCIL has confirmed that data downloading facility is available at all the S/s. CSEB informed that this recommendation is in process of implementation. MPPTCL informed that this facility has been included in ERPC (Enterprising Resource Planning Scheme), which is under tendering process. All above utilities are requested to regularly intimate status to WRPC on the progress made in this regard.
(ix) The simulation studies indicate that the distance protection scheme provided on some lines are under-reaching due to in-feed effect. Protection Committee of WRPC may look into this aspect and review the settings of 400 kV lines considering in-feeds.
The WR constituents were earlier requested to examine this aspect on case-to-case basis considering the evaluation of infeed current and standard recommendations. MSETCL intimated that protection review group has been formed and the group will take up this issue as a part of their study activity. MSETCL are further requested to pursue with the protection review group to take up the issue for Padghe S/S. All remaining constituents are once again requested to carryout study for one of the 400kV S/s in their system and put up results to the PCM forum for further review.
(x) Since the 400 kV Chandrapur-Parli T/c is a very important corridor for power flow, the relays on this line should be replaced at the earliest by latest type of numerical relays. Meanwhile the feature of lenticular characteristics available in micromho relay, may be used as an interim measure instead of circular characteristics feature being presently used.
MSETCL has confirmed that all the three feeders of 400 kV Chandrapur – Parli are fitted with numerical Areva make Micom- P 44 2 relays at both ends as main-I and main-II protection and the recommendation has been complied.
(xi) With the tripping of ± 500 kV Chandrapur-Padghe HVDC link, large quantum of power gets suddenly diverted to other alternative A.C. networks and usually results in tripping of a number of lines on power swings. The Committee recommends that with the tripping of the both poles of HVDC link, generation
MAHAGENCO intimated that the matter is under discussion stage at their head office in Mumbai and they will inform the WRPC about further status. MAHAGENCO are requested to expedite action.
that with the tripping of the both poles of HVDC link, generation level at Chandrapur thermal power station of MSPGCL may be brought down automatically to prevent spread of the disturbance. WRPC may work out a suitable scheme in consultation with MSETCL.
(xii) In the grid disturbance of 25th February, 2007, the ER-NR inter
tie got tripped resulting in disconnection of NR grid from ER grid. Subsequently, some more inter-regional links between ER/NR and NR/WR have been added which may help in reducing the impact of a disturbance in a Region on other Regions operating in parallel. However, the committee is of the view that special protection scheme be worked out on priority and implemented between the various Regions operating in interconnected mode so as to minimize the impact of a disturbance in a region on other regions
Taken up with GM Division, CEA, New Delhi vide this office letter dated 3rd
September 2007. WRLDC informed that they are in process of carrying out studies in order to devise special protection schemes in the event of tripping of regional links. As NR, WR, ER and NER are interconnected with many 400kV and 220kV links, a composite study would also be carried out to arrive at SPS in connection with the regional links.
(xiii) Following the grid disturbance that took place in Western Region in November 2003, a transmission scheme to strengthen the Western Regional Transmission System (WRSS-II) was sanctioned. A part of this scheme was for regional strengthening in Southern Maharashtra, which inter-alia comprised links for strengthening of East-West corridor in Maharashtra. However, implementation of this portion of the scheme is yet to start. The committee recommends that this scheme may be implemented without any further delay.
It is understood that needful action by the concerned agencies/authorities is in process and status is expected to be known shortly.
(xiv) The earlier enquiry committees had suggested for system strengthening within Maharashtra through inter-connection of upper and lower EHV corridors in Maharashtra network (enquiry committee on grid disturbances of 21st & 26th
September 2005). While the lower corridor in Maharashtra is getting augmented through 400kV Bhadrawati-Parli-Pune D/C and Navi Mumbai (Panvel)-Pune S/C and the upper corridor is getting augmented through 400kV Wardha-Akola-Aurangabad-Pune D/C, the inter-connections between upper and lower corridors in Maharashtra
It is understood this aspect would get addressed when the ongoing transmission schemes/ system strengthening schemes which are in the process of implementation are in place.
continues to be fragile. The inter-connections between both the corridors are essential to transfer power from one corridor to other corridor in the event of contingency in any corridor. These need to be planned and implemented at the earliest. MSETCL may take necessary action on priority.
(xv) In view of power number of combined grid formed with the
synchronous operation of WR, ER, NR and NER grids having gone up considerably, the UFLS scheme has already been modified to operate at higher frequency levels. Accordingly the frequency level for initialization of Mumbai islanding scheme should also be modified for higher frequency level. The Committee recommends raising of frequency level from existing 47.6 Hz to 47.9 Hz. Both TPC and REL systems may start adequate load shedding at 47.9 Hz in their systems to avoid further fall in frequency of the island. The separation of TPC and REL system may take place at 47.7 Hz instead of 47.6 Hz as at present. The other features of the islanding scheme except the upgraded frequency settings as above may remain unchanged.
Revised Mumbai Islanding Scheme as recommended by this Inquiry Committee has been implemented by both REL and TPC on 4.11.2007 except reverse power condition between REL and MSETCL at Boisar. In 99th
PCM held on 24.1.2008, REL intimated that reverse power relays at Boisar would be provided soon. M/s REL may intimate current status on the same.
(xvi) For survival of Western Maharashtra the actual load relief through UFR and df/dt relays under UFLS should be of the order of 3500 MW. However the actual load relief available is much less. In the grid disturbance of 25.2.2007 also, the total load relief available in Western Maharashtra was only 769 MW which was totally inadequate and resulted in collapse of Western Maharashtra. MSETCL may look into this and ensure that under all circumstances, the desired load relief is available.
To be taken up in PCM of WRPC
(xvii) The Inquiry Committee for the disturbances of 21st and 26th Sept 2005 in WR had made some specific recommendations in respect of Padghe and Kalwa 400 kV sub-stations. However, only a few recommendations have been implemented so far. In view of the importance of these sub-stations in Maharashtra system, Committee reiterates the need for implementing all the recommendations of these sub-stations on priority.
MSETCL may intimate details of work taken up and status on progress.
