1

Ph. : 26967840, 26967842, 26967990, 26868681 Fax : 26865206

e-mail : nrebops@yahoo.com Website : www.nrpc.gov.in

भारत सरकार उ�र �ेत्र �वद्त स�म�त

18-ए, शह�द ज्त �सहं मागर, कटवा�ररा सरार नई �दल्� - 110016 Government of India

Northern Regional Power Committee 18-A, Shaheed Jeet Singh Marg, Katwaria Sarai, New Delhi-110016

उ. �े. �व. स./अध्�ण अ�भरतंा (प्ा्न)/OCC_44/2009-10/ �दनांक 04-12-2009

No. NRPC/SE(O)/OCC/2009-10/ Dated: 04-12-2009 �वषर: उ�र �ेत्र �वद्त स�म�त क� 44व्ं प्ा्न स�म�त क� � बक का काररववत । Subject: Minutes of 44th OCC Meeting of NRPC. The 44th OCC Meeting was held on 16th November, 2009 at Amritsar. Minutes of the meeting have been issued. The same can be downloaded from NRPC’s Website at http://nrpc.gov.in

अशोक क्मार राजपूत(Ashok Kumar Rajput) SE (Operations) & Member Convenor, OCC

LIST OF ADDRESSES CHANDIGARH SE (Elect. Op.) – Ph. 0172-2741105, Fax-2742733, 2743950 DTL General Manager (O&M); GM (SLDC) : 23236462, 23221069 HVPNL Chief Engineer(Comm.);SE (SO & SLDC) : 0181-2664440 Fax-0172-2560622 HPSEB Chief Engineer (PSP-SO); SE (SLDC & PR) : 0177-2653119 J&K (PDD) Chief Engineer (SO) Fax – 0191-2476213 PSEB Chief Engineer (SO&C); Director (PR&C) Fax – 0175-2367490 RVPN Chief Engineer (LD); SE (SO&LD) – 0141-2740920 PTCUL/UPCL DGM (SO) 01352451160,0135-2763570 UPPCL Chief General Manager (PS); DGM (SC) ,0522-2287880,2287882 BBMB Director (PR) Fax 0172-2652820 NHPC Chief Engineer (O&M), Faridabad – 91-129-2271419 NPCIL Station Director, NAPS; Site Director, RAPS 1to 6: 01475-242190, 9414185102/9413354548, Sr. Manager (Transmission), NPCIL, Mumbai. NTPC GM (OS), NCR, Noida; AGM (OS), NR, Lucknow; 09415501008 SJVNL/NJHPS GM (C&SO),01772673283 THDCL DGM (Elect.), Tehri,0135-2430764,2438682 PowerGrid ED (NR-I), New Delhi; 26853488, DGM (OS)- 09868391275, ED (NR-II), Jammu; Fax 0191-2470293 NRLDC ED(NR-I); DGM (GM)- 26854861, 4051, 26569504 Fax-26852747 CEA Director, (GM-I) , SA to Member (GO&D), CEAFax-26732337, 26170385,26108834 PTC Sr.Vice President (Trading) Fax 41659142 Powerlink MD, Powerlinks UJVNL General. Manager Engineering : 0135-2761485, Fax 0135-2761549 BSES Vice President,39996055,39999765 IPGCL DGM, IPGCL, New Delhi, 23370884 PPGCL DGM, PPGCL, New Delhi, UPRVUNL DGM(TOM), 0522-2287701 DVVN(UPPCL) GM(MM) 0562-2603208, fax 2603736 HPGCL SE/PPM : HPGCL, Panchkula,0172-2560805 MPCL Asst. General Manager, Malana Power Company Ltd JSW Sh. Satish Jindal(VP) 011-41619674 HPPC Chief Engineer, HPPC, Panchkula, fax : 0172-2586836 NCRPB Rajeev Malhotra, Chief Engineer, Fax No. 011-24642163 NDPL A.K. Dutta, Manager, Fax-27468023,66112249, R.Pillai, HOD, PSC&AM, IPGCL/PPCL 011-011-23272367, 011-23378947, 23275039/9717694904

2

Summary Record of Discussions of 44th Meeting of Operation Coordination Sub-Committee (OCC) of Northern Regional Power Committee held on 16th November, 2009 at Amritsar List of participants is enclosed at Annexure-I. Member (Transmission), PSEB, Shri S.C. Sabarwal, welcomed the members of the OCC. He thanked Member Secretary, NRPC for giving opportunity to host 44th OCC meeting by PSEB. In his opening remarks he stated that with the winter season approaching the demand is on a rise. The weather conditions, particularly the fog and humidity during winter poses additional challenges for the power engineers managing the grid operations. He thanked the efforts put in by all concerned organizations in taking timely action for extensive cleaning of line insulators and also initiating the action for replacement of porcelain insulators by polymer and anti-fog insulators in last winter season due to which there had been very less incidences of fog related trippings. He stated that as per the Load Generation Balance Report (mid term review from October, 2009 to March, 2010) prepared by NRPC, the anticipated peak shortages of Northern Region during the month of November and December 2009, would be 17.1% and 16.2% respectively. The energy shortages had been anticipated to be 23.15% and 21.98% respectively. He requested all the constituents to manage the shortages by arranging bi-lateral assistance from outside region and through maximization of generation as well as suitable demand management measures and statutory/notified load restrictions. He stated that Under Frequency (UFRs) and Under Voltage Load Shedding Relays (UVLSRs) are the defense mechanism for the system and the constituents should ensure to keep them in healthy condition. He requested all the state to expedite the installation of capacitors and revival of defective capacitors in the State system to control the low voltage problems. He appreciated that NRLDC had conducted mock black start exercise for some of the generating stations and HVDC back to back station to verify preparedness for crisis management in Northern Region. He also appreciated the efforts made by NRPC for conducting regular training courses in different areas e.g. Power System Protection, Operation, Control, SCADA, EMS etc to the personnel engaged in power system operation and control at NRLDC and various SLDCs.

Member Secretary, NRPC also welcomed the members of the OCC. He thanked PSEB for hosting 44th OCC meeting at holy city of Amritsar. Member Secretary, NRPC requested constituents to gear up for the preparation of coming winter season. He advised constituents to take appropriate and timely action to get the porcelain insulators cleaned before the onset of foggy winter. He also requested constituents to expedite the replacement of porcelain insulators by

3

polymer or Antifog insulators. He emphasized that for safe and secure operation of grid, healthiness and functionality of Under Voltage Load Shedding Relays (UVLSRs), UFRs and df/dt relays should be ensured. He also expressed concern over poor progress of installation of capacitors in the system. He reiterated that so far during 2009-10 only about 4% of the assessed capacitor requirement had been installed in Northern Region. MS, NRPC then requested SE (O), NRPC to take up the regular agenda. 1.0 Confirmation of Minutes The Minutes of the 43rd OCC meeting held on 9th October, 2009 at New Delhi were confirmed by the committee.

2.0 Performance of Under Frequency Relay and df/dt Relays M.S., NRPC requested to concerned state utility to provide at least the desired load relief in the system through UFRs operations. SE(O), NRPC stated that NRPC Secretariat is in the process of updating the list of UFRs and df/dt relays indicating the feeder wise load relief planned. Rajasthan, Punjab, Himachal Pradesh and BBMB had submitted the information. All other concerned utilities were requested to update the list and sent to NRPC secretariat via e-mail. In 14th NRPC meeting held on 19th Sept, 2009 it was decided to monitor the operation of UFRs online through SCADA system. The concerned utilities were requested to submit action taken in this regard to NRPC Secretariat indicating the location of existing UFRs and df/dt relays by updating the data as per the formats already hosted on website of NRPC. BBMB stated that the amount of load relief obtained through UFRs which are connected to 66kV/33kV feeders is available through the transformer loading which is available on SCADA system. As regard to the reported mal-operations of relays in df/dt mode in the system it was suggested by NRLDC that to avoid the inadvertent operation of relays in df/dt mode the measuring time should be increased to 8-10 cycles. BBMB and UPPTCL were requested to do the needful. 2.2 Punjab, Delhi, Uttarakhand and Haryana had sent the data for operation of Under Frequency Relays (UFRs) for the month of October, 2009. The Constituents were requested to send the data in the prescribed format available in Agenda.

4

UP stated that the data would be available from the next month. Constituents were requested to confirm the revised setting of df/dt relays as approved in the 23rd OCC Meeting. 2.3 Inspection of UFRs Constituents were informed that the inspections of UFRs were carried out at some of the sub-stations in Rajasthan, Delhi, UP and Haryana. It had been found that UFRs were generally functional. UFRs provided varied relief due to the fact that they were installed in rotational load shedding scheme (RLSS) in the sub-stations. It was suggested that in order to obtain the optimum relief each state should review the RLSS. Haryana and UP were requested to re-calibrate the time shift in the Programmable Logic Controller (PLC). Other states were also requested to check and recalibrate the PLC. In order to obtain reliable load relief through UFRs Operations, the UFR needed to be tele-metered and mapped into SCADA system. A day’s seminar was also suggested to increase the awareness of UFRs amongst officials.

All the Constituents were requested to go through the above suggestions made and ensure the functionality of UFRs in their systems.

2.4 Procurement of Additional 30% UFRs and df/dt Relays SE(O), NRPC informed that in the 7Th NRPC meeting held on 20th Dec, 2007 it was

decided that the constituents have to install 30% additional UFRs and df/dt relays so

as to provide adequate relief. Constituents were requested to furnish the details of

additional 30% UFRs and df/dt Relays on regular basis as per the format available in

Agenda.

Status of additional 30% UFRs and df/dt Relays in the system installed till date and

target for commissioning is given at Annexure-II.

3.0 Under Frequency and Drawl Based Emergency Load Disconnection Scheme in Northern Region

5

NRLDC had proposed a semi automatic load regulation scheme based on the over drawl and low frequency conditions of operation in the region. Representative of NRLDC stated that it had been experienced in past that some constituents continue over drawal even at low frequency and inspite of issuing A, B and C messages they did not take prompt action to limit their overdrawals. This makes the system vulnerable and weak and even a single element outage could lead to grid collapse in such situations. Representative of NRLDC added that the proposed scheme is drawal based emergency load disconnection scheme. As per this scheme based on the drawl position of the constituent some pre-identified load would be disconnected. NRLDC would instruct for enabling the scheme for emergency load shedding in a state only when a particular state is overdrawing for a prolonged period, endangering the grid security. The scheme would have two steps:- Step–I: At 49.0 Hz, tripping in this step would give the signal to overdrawing state to undertake emergency measures to limit their drawl from grid in order to avoid emergency disconnection of the load. And if frequency does not improve then next step would operate. Step-II: At 48.9 Hz, tripping in this step would disconnect a pre-selected load from network. Toggling switches would be provided at locations wherever this scheme would be implemented. By default these toggling switches would normally be kept in disable (off) position making the scheme ineffective. However, in case high over drawl pattern was observed from a state causing the frequency also to excurse to low level, i.e. below 49.2 Hz, then NRLDC may advise for keeping the switches in ‘ON’ position (enabling the scheme) under intimation to the defaulting state and under such situation whenever the frequency falls below the threshold value (as defined under Step-I & Step-II), the above tripping involving automatic load shedding may take place. The supply of affected load would be reconnected after the drawl of the concerned state reduces and brought back to schedule and the system frequency/voltage improves.

6

All constituents principally agreed for the scheme. However, the following comments were raised by the respective constituents:- Delhi:- Representative of DTL stated that tripping of 220 kV Maharanibagh- Lodhi Road line would result in loss of load of some VVIP areas. They suggested that tripping of load of Bamnauli- Najafgarh –I & II might be explored for this scheme. For this purpose the relays could be installed at 400/220 kV Bamnauli (DTL) substation and NRLDC’s instructions for activation of these relays would be conveyed to Bamnauli substation. Punjab:- Representative of PSEB stated that Jallandhar (BBMB S/s) 220/66 kV ICTs was not in radial mode as the 66 kV ring main system of Jallandhar is fed through this and disconnection of ICTs from Jallandhar would overload the system down below. For disconnection of Sangrur BBMB substation, they stated that during Paddy season both, ICT – I and ICT-II remain overloaded and automatically tripping of one ICT at Sangrur from BBMB S/S at frequency 49.0 Hz might overload other ICT. PSEB was requested to explore some other feeders in consultation of NRLDC for the scheme.

Haryana:- Representative of Haryana stated that in principle they were in agreement to the scheme, however they would confirm the name of the feeders and load which would be allowed for disconnection under the above scheme. Haryana was requested to identify the feeders and load in consultation with NRLDC. Uttarakhand:- Representative of Uttarakhand stated in the proposed scheme there could be generation loss at Khatima Power station. Uttarakhand was requested to explore other feeders and load in consultation with NRLDC where this scheme could be implemented. Rajasthan:- Representative of Rajasthan stated that the feeders suggested for disconnection would have to be examined in the context of Dholpur GPS power station security. Rajasthan was requested to identify the feeders in consultation with NRLDC for the scheme. HPSEB:- The representative of HPSEB expressed his concern that CERC allow only over-drawal of 12% of electricity of the schedule by any beneficiary or a buyer during a time-block of its scheduled drawal or 150 MW (whichever is lower) when frequency is below 49.5 Hz, and 3% on a daily aggregate

7

basis, then on what basis a particular state would be chosen for this scheme. He also expressed concern that this scheme did not specify the limits on duration and quantum of overdrawal by the constituents. He further stated that it might happen that all states are continuously overdrawing and a load shedding of 1710 MW might affect the reliability and stability of the grid. This scheme also did not specify the duration after which the feeders would be reconnected. On the query of HPSEB, representative of NRLDC stated that the load to be disconnected by this scheme had been selected in the manner that they were distributed through out the Northern Region and this would not affect the reliability and stability of the system. They further stated that it had been experienced in past that all constituents did not overdraw from the grid at the same time. Diversity in overdrawal pattern from state to state exists. They further added that they would give adequate time to the state to restrict the overdrawal before enabling the disconnection of load. They also clarified that this scheme was not a substitute to UFRs operation and load regulation done by SLDCs at state level. This scheme would only be implemented in emergency condition for safe and secure operation of the grid. Detailed instructions for enabling the scheme considering overdrawal pattern etc. would need to be issued separately in any case so as to minimize any discretion. Representative of NDPL stated that there could be instances when a DISCOM is not overdrawaing but the state as a whole is overdrawing and in such cases activation of the scheme could affect the DISCOM’s load also. Representative of DTL stated that this could not be ensured 100% of the time. After a detailed deliberation MS, NRPC requested NRLDC to examine the scheme and modify/elaborate, if required, considering:

• Criteria for continuous Overdrawal by the constituents; • Generation loss, if any, which should be avoided; • While opening the feeders, the ICTs and down below system should

not get overloaded; • Time limits for disconnection and reconnection; • Selection of feeders from strategic considerations.

The above utilities would submit suggested changes within a week’s time to NRLDC. The revised scheme would be placed at the next RPC meeting.

8

4.0 Replacement of Porcelain Insulators by Polymer/Antifog insulators in

High Pollution Areas of Northern Region

MS, NRPC stated that a special meeting to review the progress of replacement of porcelain insulators by polymer/antifog insulators in high pollution areas of Northern Region was held on 10th Nov, 2009, wherein it was decided to expedite the work for replacement of porcelain insulators by polymer/antifog insulators so that it could be completed at all critical locations before the onset of winter. The status as updated in the meeting is enclosed at Annexure-III.

5.0 Cleaning of Porcelain Insulators on EHV lines in High Pollution Areas of

Northern Region MS, NRPC requested the concerned utilities to expeditiously complete the cleaning of insulators of lines as the fog has already set-in in the Northern Region. Utilities were also requested to submit the cleaning schedule and progress to NRPC secretariat via email. Representative of POWERGRID informed that cleaning of porcelain insulators of lines in Mainpuri, Allahabad and Kanpur areas by use of helicopter would start on 15th December, 2009. The constituents expressed their concern over delayed cleaning of insulators by POWERGRID. HPSEB stated that the cleaning of insulators of lines should be expedited as the fog is already being experienced in some parts of the Northern region. Representative of NDPL also stated that as per IMD forecast the onset of foggy weather is much earlier than the last year and the cleaning process must be advanced. MS, NRPC requested the concerned constituents to expedite the cleaning process of insulators of line and also repeat the cleaning of insulators periodically at all critical locations.

6.0 Status of Commissioning of New Generating Units The status as updated in the meeting for commissioning of new generating

units in 2009-10 and 2010-2011 is at Annexure-IV. Constituents were requested to mention the fuel supply arrangement, CoD as

9

well as the date of stabilization of the generating units/plants. 7.0 Status of Commissioning of New Transmission Works

Name of system element

Status

POWERGRID 400 kV Kankroli–Jodhpur line

• Commissioning schedule: October, 2009. • Kumbhalgarh forest clearance from Supreme

Court had been received. Completion by Dec., 2009.

• Two towers’ locations of line are in Defense area. Clearance under process and awaited.

Bhinmal sub-station • POWERGRID had declared the commercial operation of Bhinmal sub-station and associated bays/reactor from 01-09-2009.

• RVPNL would connect three feeders by March 2010 and fourth feeder thereafter.

Outlets from Kota (POWERGRID) sub-station

• Four bays to be provided by POWERGRID as agreed in the meeting of Standing Committee on Transmission Planning of CEA.

• Commissioning schedule is December, 2009. • POWERGRID confirmed that 2 bays would be

ready by December, 09 and another 2 bays would be matched with the commissioning schedule of lines to be constructed by RVPNL.

• Commissioning schedule of lines to be constructed by RVPNL to Bhinmal is March, 2010.

PTCUL Outlets from Roorkee (POWERGRID) sub-station

• POWERGRID confirmed that 4 bays had been charged.

• Expected completion schedule of outlets by PTCUL is May, 2010.

• Issue of additional bays, if any required by PTCUL to be flagged in the Standing Committee of Transmission Planning of CEA.

UPPTCL was requested to submit the information about augmentation and commissioning of new transmission works envisaged during 11th Plan by 23rd Nov, 2009.

10

8.0 Monthly Target of Installation of Shunt Capacitors and status of Revival of Defective Capacitors Status of Shunt Capacitors’ installation for 2009-10 is enclosed at Annexure-V A. Month wise target and actual capacitors installed by each constituent States are being monitored by the NRPC Secretariat. It had been noted that so far during the year 2009-10, Punjab have installed 186 MVAR capacitor banks. Rajasthan had installed 7.6 MVAR capacitors. Other States have not installed any capacitors in their system during FY 2009-10. The status of procurement action by the States for new capacitors as on 31-10-2009 is at Annexure- V B.

9.0 Extremely Slow Progress of Installation of Shunt Capacitors

MS, NRPC stated that in the 13th NRPC meeting held on 27th June, 2009, it

was decided that 10% of total requirement of capacitors in each state during 2009-10 to be installed at critical locations would be reimbursed from reactive pool account subject to availability of fund in the pool. 90% of the amount paid towards purchase of capacitors would be released after submission of certified invoices and balance 10% after receipt of certificate of commissioning of the capacitors from SLDCS’ head.

Accordingly, the proposal of installation of capacitors at critical locations during 2009-10 received from HVPNL, UPPTCL, PSEB, PTCUL and HPSEB had been approved in the 14th NRPC meeting held on 19th Sept, 2009 and is given as under: Further, MS, NRPC informed that in 14th meeting of NRPC held on 19th Sept, 2009, it was decided for additional 10% of total capacitor requirement during 2009-10 at critical locations in each State would be reimbursed from Reactive Pool Account subject to availability of fund in the pool. Each State SLDC may identify critical locations of low voltage and submit the proposal for installation of additional 10% capacitors of the respective State’s requirement during

Constituent State Capacitors MVAR Estimated Cost Rs Lakh

Uttar Pradesh 150 375 Haryana 89.75 124.50 Punjab 96 227 Himachal Pradesh 4 21 PTCUL (Uttarakhand) 30 75

11

2009-10, at priority on those locations to NRPC Secretariat. States were requested to submit their proposal for capacitor installation indicating the estimated cost. Reimbursement from Reactive Pool Account would be considered for the capacitors approved by NRPC and commissioned at critical locations before 31st March, 2010 only.

HPSEB suggested that regular training courses in the area of Reactive Power Management would be useful for the personnel engaged in power system operation and control at various SLDCs. All members of the committee agreed to the proposal. It was decided that the funds for the training on Reactive Power Management could be made available from Reactive Pool Account, subject to the availability of fund.

10.0 Mobile Testing Kit for on site Testing of Meters/CT/PT

MS, NRPC stated that Mobile testing kit for on site testing of meters/CT/PT being procured by CPRI would be available in Dec, 2009 in National Capital Region (NCR) area. Representative of CPRI during his presentation stated that The Mobile Test Lab, a dedicated system for accuracy testing of Instrument Transformers, could be utilized both in substations & power stations. Salient features of the Mobile testing kit as furnished by CPRI are as below: i) The mobile testing kit is designed for testing of IVTs/CVTs upto 400 kV class, CTs upto 2000 Amps, Current ratio error measurement accuracy of 10 PPM & resolution of 1 PPM, Voltage ratio error measurement accuracy of 50 PPM & resolution of 1 PPM and Phase angle displacement error of 10 μ Rad accuracy for CTs & 50 μ Rad for IVTs/CVTs. ii) The mobile test lab is also equipped with:

• Automatic tan delta & capacitance measuring system for dielectric diagnosis of the CTs & CVTs dielectric.

• Portable Automatic Energy meter testing system for accuracy testing of the Energy meters.

• CT analyser for conducting burden measurement, excitation characteristics, instrument security factor, knee point voltage and winding resistance measurement.

iii) The normal working hours for conducting site testing would be 8 hrs per day. During the 8 hrs one feeder consisting of 3 CTs or IVTs or CVTs could

12

be tested provided the disconnections are made before commencement of tests. Similarly other tests such as tan delta, capacitance, burden measurement, winding resistance measurement, excitation characteristics, instrument security factor, knee point voltage characteristics can also be taken up on per day chargeable basis.

Commercial Terms & Conditions: The test charges for conducting “on site accuracy testing” will be Rs.1,50,000/ per day, considering 3 Nos. of CTs or PTs or CVTs of one feeder. Similarly other tests can also be taken up on per day chargeable basis as above. The transportation charges for mobile unit per day is Rs.20,000/- . The total test and consultancy charges are to be paid in advance. Other Bank charges shall be borne by the Utility / Manufacturer. Any other taxes (such as work tax etc.) imposed by Central or State Govt. at the time of billing shall be charged extra. The constituents desired that in order to optimize the movement of Mobile Testing Lab and to optimize the cost of testing the locations be prioritized. Constituents also stated that the cost of testing appears to be on higher side and should be reviewed by CPRI. Representative of DTL expressed that they have got 3000 Amps CTs also in their system and mobile testing kit is designed upto 2000 Amps CTs. Similarly SJVNL expressed that they have got CTs upto 4000 Amps also. CPRI was requested to look into these aspects. In order to coordinate activities of testing of CT/CVT in the premises of various utilities, and for proper utilization of Mobile testing kit, it was decided to form a committee consisting of representatives from CPRI, STUs, CTU, NTPC, NHPC and NRPC.

11.0 Overview of Grid Operation

Power Supply Position Provisional Power Supply Position for October, 2009 was discussed in the meeting. As per provisional power supply position, NR had a peaking shortage of 12.91% and energy shortage of 11.07%. The Regional Consumption had increased by 21 MUs/Day. Net Inter-Regional import also increased by 54 MUs/day.

13

Representative of NRLDC presented following on the performance of the Grid Operation during October, 2009. In the Northern Region there had been substantial growth in the consumption of almost all states as compared to the corresponding months during the last year. The same has been summarized as (in %) below:

State Oct,09 Sep-

09 Aug -09

July-09

June-09

May-09

April 09

Himachal Pradesh

9.3 8 6.1 8.6 5 8 3

Uttarakhand 5.5 10.7 10.9 15.7 9.3 3.7 3.7 Uttar Pradesh (2.8) 3.2 7.5 13.4 17 9.5 19 Punjab (0.5) 0.9 6.2 2.4 13.4 19.4 11 Rajasthan 8.9 17.6 10.1 5.3 22.4 20.4 13 Haryana 16.5 26.2 24.6 27.2 28.6 26.4 24 Delhi (2.5) 5.6 12.8 11.3 11.3 15.8 4 J & K 21.6 16.9 19.2 24 14.7 13.2 12 Northern Region

3.7 8.9 12 11.7 16.9 15.9 14

Note: Figures shown in small bracket are negative

Northern Region witnessed a growth of 3.7% (21 MUs/Day) (with respect to year 2008) in the month of October, 2009 in terms of consumption. Haryana & J&K witnessed a growth of 16.5% and 21.6% respectively. During the month of October, 2009 Rajasthan, HP & J&K met their maximum demand of 127, 19.8 and 30.4 MUs/day respectively.

11.1 Maximum daily consumption (MUs) by the constituents were as under:

State Maximum Consumption (MU) (October, 2009)

Maximum Consumption (MU) So far

UP 172-17th October 182-5th June 2009

Punjab 124-2nd October 164 –26th July 2007 Haryana 104-1st October 121 –27th August 2009 Rajasthan 127-31st October 124-31st Jan 2008 Delhi 77-3rd October 93-8th July 2009 Uttarakhand 23.6-3rd October 27-25th July 2009 HP 19.8-24th October 19.6- on 17th July 2009 J&K 30.4-28th October 29.4 MU-21st Sep 2009 Regional 656-3rd October 719-3rd August 2009

14

11.2 Maximum Demand met (MW) as presented by NRLDC were as under:

State Extremes During October-2009 (D.O. Report)

Extremes So far (MW)

Punjab 6096-1st October 7464 on 30th July 2007

Haryana 4980-1st October 5678 on 22nd July 2009

Rajasthan 6041-30th October 6101 on 30th Jan 2009

Delhi 3957-1st October 4408 on 8th July 2009

U P 8254-17th October 8568 on 17th Sept 2007

Uttarakhand 1207-16th October 1313 on 20th July 2009

H P 946-28th October 1014 8th Dec 2008

J&K 1377 1487 27th Sep 2009

Regional 30674-1st October 32039 16th July 2009

11.3 Frequency Profile NRLDC informed that the frequency of the grid remained below 49.2 Hz for 5.03 % of time and 94.67 % in the frequency band of 49.2-50.3 Hz. However, the system frequency touched 48.8 Hz for 155 number of times during the month based on 2 sec sample data. Frequency profile (in % of time) from April to October, 2009 had been as under:

April-

09 May-09 June-

09 July-09

Aug-09 Sep-09

Oct-09

<49.0 Hz 5.53 1.06 7.0 1.04 9.17 6.06 1.28

<49.2 Hz 19.63 6.57 19.93 4.75 25.51 16.3 5.03 <49.5 Hz 38.97 29.99 49.34 27.91 60.96 40.08 28.23 49.2-50.3 Hz 80.06 91.07 80.18 94.72 74.36 83.19 94.67 >50.3 Hz 0.31 2.36 0.49 0.53 0.13 0.51 0.30 Av. Freq 49.46 49.68 49.51 49.64 49.40 49.58 49.66

11.4 Grid Code Violation Messages Issued by NRLDC: During the month of October, 2009, Grid Code (IEGC) violation messages issued by NRLDC to the constituents were as under:

Constituent Wise Grid Code (IEGC) Violation Messages (October, 2009)

15

Note: A message is a Warning Message below 49.5 Hz. B message is violation of IEGC clauses 5.4.2(a) and 6.4.7. C message is violation of Clauses 5.4.2(b) of IEGC and sections 29(2)/29(3) of EA 2003.

NRLDC raised the issue of heavy load reduction to the tune of 1500 MW by UPPCL at 16:00 hours. It was communicated that such load reduction leads to rise in voltage at various nodes in the grid endangering safety and security of the grid. UPPCL was requested to stagger the load reduction for a longer duration. 11.5 Overdrawal Below 49.2 Hz During October, 2009: The status of overdrawal below 49.2 Hz by various states was as given in the following Table:

State wise/time block wise overdrawals, below 49.2 Hz during October, 2009 as required by CERC were as given at Annexure-VI. 11.6 Telemetry Issues

Constituents were requested to integrate the new substations with RTUs / New transducers as early as possible. It was explained that these are required not only for proper functioning of EMS but also for proper visualization of network. Constituents were requested to integrate the following important RTUs on priority basis

a. 400 kV Baglihar (J&K)

B CUP 24733 908 1094Haryana 5293 212 424J & K 7009 250 331Uttarakhand 3754 169 236Punjab 1820 158 226Rajasthan 1608 93 175Delhi 907 130 144HP 1377 66 104UT Chandigarh 456 24 40

State/UTMWh

overdrawal below 49.2 Hz

Average of Maximum

overdrawal (MW)

Average overdrawal

(MW)

CONSTITUENT MSG A MSG B MSG CUTTAR PRADESH 17 7 2

HARYANA 13 4 1J&K 14 5 0

UTTARAKHAND 5 2 0PUNJAB 9 0 0

RAJASTHAN 3 0 0HIMACHAL PRADESH 2 0 0

CHANDIGARH 1 0 0DELHI 1 0 0

16

b. 400 kV Roorkee (POWERGRID) c. 400 kV Kashipur (PTCUL) d. 400 kV Greater Noida (UPPTCL) e. 400 kV Jodhpur (RRVPNL) f. 400 kV RGTPS (HVPNL) g. 400 kV Bhinmal (POWERGRID) h. 400 kV Kota (POWERGRID) i. 400 kV RAPP C (POWERGRID) j. 220 kV Barsingsar & 220 kV Dholpur k. 220 kV Dohna (UPPTCL)

It was also informed by NRLDC that the telemetry from the following stations were either incorrect or intermittent.

a) 400 kV Dulhasti (NHPC)-Intermittent b) 400 kV Gorakhpur (POWERGRID)- Data not updating c) 400 kV Baila (POWERGRID)-Incorrect d) 400 kV Bareilly(POWERGRID)-Incorrect e) 400 kV Uri (NHPC)-Incorrect f) 400 kV Ludhiana (POWERGRID)-Incorrect g) 400 kV Merta (RRVPNL)-Incorrect h) 400 kV Gorakhpur (UPPCL)-Incorrect i) 400 kV Azamgarh (UPPCL)-Incorrect

Respective constituents were requested to take urgent action to rectify the problem.

11.7 Telemetry improvements a) It was informed that CFE (communication front end) up gradation has been

successfully completed at HP SLDC. b) Second route was commissioned for the following 400 kV stations increasing

the reliability of telemetered data.

• 400 kV Nalagarh

• 400 kV Chamera-I

• 400 kV Patiala c) All the elements at 400kV Kankroli S/S have been wired for telemetry. 11.8 Mock Black Start Exercises NRLDC informed that following mock black start exercises were carried out recently.

a) 400 kV AC bypass at Vindhyachal-15th Oct 2009 b) Nathpa Jhakri-21st Oct 2009

17

c) Dadri GPS-24th Oct 2009 d) Salal-29th Oct 2009 e) Tehri-9th Nov 2009

However in case of Dadri GPS the mock exercise had not been demonstrated to the

constituents. NTPC had carried out the mock exercise of Dadri GPS at their end.

NTPC was requested to send a detailed report of the mock exercise. NRLDC placed

on record the cooperation, assistance and efforts made by all involved in mock black

start exercises. Some general issues, which were raised, were as follows.

a) Introduction of design delay to avoid over voltage tripping under low fault level situations

b) Lack of synchronizing facility on many locations c) Non availability of synchronizing facilities at coupler breaker d) Cannibalized equipments in the substation e) Errors observed in SCADA displays and telemetry related issues

12.0 Under Voltage Load Shedding Relays (UVLSRs)

SE(O), NRPC stated that PSEB, DTL and PTCUL have reported that they have installed UVLSRs in their system. 12 UVLSRs out of 13 UVLSRs had been installed in UP system, however, because of the persistent low voltages the contacts of the relays had not been wired to circuit breakers. In the 43rd OCC meeting held on 9-10-2009 UP had been suggested to set the relays to operate at 190 kV. UPPTCL may confirm whether the UVLSR, have been wired to Circuit Breakers or not. RVPNL intimated that numerical relays installed on most of the grid sub-stations had the features of under voltage and the same may be utilized as and when required. RVPNL was requested to submit the name of feeders and grid sub-stations (GSSs) where under voltage load shedding scheme was to be implemented, in consultation with NRLDC to NRPC secretariat. HVPNL intimated that 5 UVLRS had been proposed to be installed in their system. HVPNL was requested to send the details of location for installation of relays.

J&K and Chandigarh to submit the information regarding numbers, locations and time frame for installation of UVLSRs.

13.0 Notified Power Cuts on Industry and Supply of Power to Agricultural Sector

18

Details of Notified power cuts on Industries and supply of power to Agricultural Sector, Commercial and Domestic categories of consumers for the month of October, 2009 was circulated in the meeting. Members noted above.

14.0 Maintenance Programme of Generating Units and Transmission Lines

14.1 Generating Units

NTPC (NR-HQ) and NTPC-NCR submitted the maintenance schedule of their generating units for the month of November, 2009 to January, 2010. Following shutdown were discussed and agreed in the meeting:

NTPC (NR-HQ)

Station / Unit / Capacity

Period Remarks

From To Days Singrauli / Unit-6 /500 MW

19-10-09 *12-11-09 25 Under O/H

Unchahar / Unit-2/210 MW

18-10-09 *26-11-09 40 Under O/H

Tanda / Unit-4/ 110 MW

20-11-09 02-02-10 75 As per LGBR

Note: * Expected date of synchronization.

NTPC-NCR

Station Unit Capacity (MW)

Shutdown Period No. of days

Work to be undertaken From To

Badarpur

2 95 23/10/09 06/12/09 45 Major Overhaul

Anta

GT#2 88.71 09/10/09 17/11/09 40 Major O/H (R&M)

GT#2 88.71 21/11/09 22/11/09 02 S/D for Post R&M PG test

GT#3 88.71 25/11/09 02/12/09 08 8000 VOH Inspection

GT#1 88.71 20/12/09 25/12/09 06 12000 VOH Inspection

Auraiya GT#4 111.19 02/12/09 04/12/09 03 Air intake Filters replacement

GT#2 111.19 06/01/10 25/01/10 20 Extended Combustor Insp.

GT#3 111.19 07/11/09 01/12/09 25 HPI+Starting Unit+GENR overhaul+Filters replacement

ST#1 109.30 06/01/10 25/01/10 20 Minor Overhaul of ST& STG

Dadri (Gas)

GT#1 130.19 04/11/09 08/12/09 35 25000 EOH Inspection+Air Filter Replacement+Blr Lic

GT#2 130.19 01/11/09 02/11/09 02 Air Filter Replacement+Blr Completed

GT#2 130.19 27/01/10 31/01/10 5 4000 EOH Insp

19

GT#3 130.19 07/12/09 11/12/09 5 4000 EOH Insp GT#4 130.19 09/11/09 13/11/09 05 4000 EOH Inspection+ Air

Filter Replacement Completed

Faridabad GT#1 137.75 28/11/09 29/11/09 2 Air intake Filters replacement GT#2 137.75 01/12/09

05/12/09

5 4000 EOH Insp Completed

Only Air Filters Repl to be done 14.2 Transmission Lines Following critical shutdown were deliberated and agreed in the meeting. Sl. No.

Line/Equipment Duration Purpose

From To Mode (Daily/ continuous)

Date Time Date Time 1.

220 kV Dhauliganga-Bareilly D/C

After 15th Dec, 2009 6:00 18:00

Continuous 5 days shut down for shifting of line from ERS to normal tower

2 Unnao- Bareilly I&II* 09/11/09 09:00 22/11/09 18:00

Continuous Installation of FSC at Unnao

* The shutdown for Unnao- Barellilly I &II from 09/11/09 to 22/11/09 was not approved as other lines were already under shutdown. POWERGRID was requested to take shutdown of this line in consultation with NRLDC.

15.0 Outage of Important System Elements in NR for a Long Period

Some of the system elements had been out of service for a long time and this makes the system weak and vulnerable. Status is as under: Uttar Pradesh

50 MVAR Bus Reactor at Gorakhpur

• Two phases of the reactor attended • Test carried out on the third phase, expected

to be commissioned soon. 50 MVAR, 400 kV Bus Reactor at Sarojini Nagar, Lucknow

• Out since 10th July, 2008. • Beyond economical repair (BER). • POWERGRID has written a letter to UPPTCL

regarding sharing of cost if the new reactor is to be installed.

20

400/220 kV, 240 MVA ICT-2 at Obra

• Out since 09-08-2002, ICT failed. • Purchase order for ICT placed on M/s BHEL. • Delivery of ICT expected in June, 2010.

50 MVAR, 400 kV, Bus Reactor at Bareilly.

• Out since 5th Aug., 2007. • UPPTCL decided to install a new bus reactor

(the defective one is BER). • Financial approval for the same had been

obtained. Non availability of reactor due to circuit breaker problem at Anpara TPS

• CB was faulty since Dec, 2007. • M/s Hitachi had submitted their offer for

repair of Circuit Breaker. Delivery of the requisite equipment expected by 15th February, 2010.

Delhi Transco Limited (DTL)

400/220 kV ICT- IV, Bawana

• Out since 28.07.2009. Gas formation, kept under observation. Testing is going on.

• Winding fault is suspected. • Expected to be revived by March 2010.

16.0 Availability of Spare System Elements in Northern Region

Status of availability of spare converter transformer for HVDC Rihand- Dadri by pole system is as under:

System element Status

Second (out of six: 4 meant at Rihand and 2 at Dadri) spare converter transformers in Rihand-Dadri HVDC system.

• 2nd transformer available at Dadri since 13-11-2007.

• A converter transformer failed at Dadri end due to winding fault. The same was replaced by the spare converter transformer on 14th February, 2008. Order placed for its repair in the second week of August, 2008. Joint inspection was be carried out by BHEL on 28th August, 2009 and transformer would be ready for despatch by February, 2010.

17.0 Delay in Commissioning of 220 kV Nalagarh-Mohali D/C line (100 ckt

kms)

21

220 kV Nalagarh-Mohali D/C line is a part of the Jhakri transmission system and was scheduled to be commissioned by December, 2004. The commissioning was delayed due to Court case etc. Punjab Government had taken up the matter with the Himachal Pradesh Government for notification under Section 164 of the Electricity Act, 2003 which empowers for the placing of electric lines for the transmission of electricity. In this regard HPSEB vide letter dated 7.11.2009 have issued no objection certificate subject to certain conditions which inter alia includes “Approval of Central Govt. shall be obtained before starting work on the above lines in accordance with section 164 read with section 2 of Electricity Act, 2003.”

18.0 Over Voltage Problem in NJHPS During Lean Season (Agenda by SJVNL)

The representative of SJVNL informed that they had encountered failure of their 400 kV GIS line circuit breaker as well as 400 kV outdoor equipments during lean season when grid voltage mostly remains on higher side over a long time although the system is designed to withstand high voltage at certain limit. He stated that to control the grid voltage during lean season opening of NJHPS line circuit breaker through direct trip command from Abdullapur/Nalagarh is carried out. Opening the breaker under such conditions, might generate switching surges voltage more than the design value which caused the failure of 400 kV line circuit breaker. SJVNL requested that rather than making generation schedule zero during high voltage condition of grid, mostly during mid night hours in lean season, NRLDC may give generation schedule of at least 150 MW so that generator can control the grid voltage to some extent by absorbing the MVAR to the best possible. This would also avoid the unnecessary operation of NJHPS line circuit breaker during high voltage conditions and as such failure of line circuit breaker can be minimised. A sub committee consisting of the members each from SJVNL, NRLDC, POWERGRID, NRPC and HPSEB was proposed to be formed to look into the matter.

19.0 Tripping of Jhakri and Baspa Hydro generating Stations alongwith 400 kV Circuits Emanating from Jhakri on 19-05-2009 (Agenda by SJVNL)

S.E.(O) informed that in 39th OCC meeting of NRPC on 15.06.09, the sub-committee was formed to analyse the tripping of the generating units and outgoing circuits at Jhakri and Baspa which occurred at 16:37 hrs on 19.05.09. The sub committee submitted the report. The report is available on

22

the website of NRPC. SJVN had now requested that the schedule should be revised to zero and accordingly revised UI be determined. SJVN had further requested that compensation for loss of energy be allowed. After deliberations, it was decided that the matter would be taken up in the forthcoming Commercial sub-committee meeting scheduled to be held on 3rd Dec, 2009.

20.0 Strengthening and Up-Gradation of the Transmission, Sub-transmission

and Distribution System by Constituents. SE(O) NRPC requested to the Constituents to furnish the programme for strengthening and up gradation of their transmission, sub-transmission, and distribution system matching with the load growth and generation capacity addition programme during the financial year 2009-10. The constituents were also requested to furnish the requisite information along with the status of various works and the time line of completion of the targeted activities.

21.0 Status of Implementation of the Recommendations of the Inquiry

Committee Report on Grid Disturbances in Northern Region on 27th January, 2007 and 7th and 9th March, 2008.

S.E.(O) informed members that most of the recommendations of the committee had been completed. One the recommendations of the Committee was to impose ban on setting up of brick kiln or any other industrial unit or biomass or diesel based power plant having chimney height of 30 meters within 0.5 km of 220 kV or higher voltage transmission lines. In this regard it was decided in the 13th NRPC meeting held on 27th June, 2009 that the States should send their comments/difficulties in the matter to CEA, so that the matter could be taken up with the Central Pollution Control Board (CPCB) by CEA through Ministry of Power. One of the Recommendations of the Committee was the Pollution Mapping in the Country to be done by the POWERGRID. POWERGRID is consulting with CPRI.

22.0 Power Injections in the Grid

SE(O) requested constitute states to regularly furnish the information regarding power available through Captive and Renewable Energy Sources.

23

Information received from State utilities is given as under:

Rejection of Open Access for Captive Power October 2009

Sl.No. Name of firm/ Plant/location

MW Reasons for Rejection

1 Rajasthan NIL -- 2 Punjab NIL -- 3 HP NIL -- 3 NRLDC 13 applications

were rejected Non availability of margins

Power Injections in the Grid From Captive Power Plants co-generation and Renewable Energy Sources (RES) During Oct. 2009 is given as under:

State Injection(export (-)) from (in MUs) Remark Captive RES Co-generation UP 12.6 , (-)2.88 18.6 Oct, 09 Rajasthan 107.2 58.25 Oct, 09 HP NIL NIL NIL Oct-09 Punjab (-)55.753 Oct, 09 Punjab 6.611 14.53 Sep,09 NRLDC informed that through open access, a total of 192 applications (1304

MUs) of captive power were approved in the Northern Grid. Thirteen numbers

of applications were rejected due to non-availability of margin. Total 88

number of application (118 MU) were approved for UPPCL through open

access during the month of October 2009. Captive Details furnished by NRLDC for October, 2009:

Captive details No. of approvals MUs

Inter-regional 169 (47 plants) 1257 MUs (all import to NR)

Intra-regional 23 (7 plants) 47 MUs

Total 192 (54 plants) 1304 MUs

23.0 Power Supply Position for the Areas of State’s Falling Under National

24

Capital Region (NCR) Details regarding power supply position for National Capital Region submitted by Rajasthan, Delhi and UP for October, 2009 were as under:

Sub-Region

Requirement (MW)

Availability (MW)

Shortfall (MW)

Energy Requirement

Energy Availability

Shortfall

Delhi 3980 3957 23 1892.86 1885.73 7.13 UP 2257 1633 624 1662.3 1202.8 459.5 Alwar 517 462 55 3852 3440 412

Haryana was requested to send power supply position for National Capital Region by e-mail to NRPC secretariat.

24.0 Report in Respect of Planned Outage of Generating Units Constituents were requested to send exception report to NRPC in the format available in Agenda.

25.0 Date and Time of Next Meeting

The 45th OCC meeting is proposed to be hosted by IPGCL on 11-12-2009 at The Ambassador Hotel, Sujan Singh Park (Near Khan Market), New Delhi-110003.

25

Annexure-I LIST OF PARTICIPANTS: 44th OCC MEETING IN CHAIR: Sh A. K. AGGARWAL, MS, NRPC

NRPC Name(S/Sh/Ms) Designation Organisation Mobile No. E-mail A.K. Rajput SE NRPC 9868202176 nrebops@yahoo.com P.S. Mahske SE NRPC nrebops@yahoo.com Rishika Sharan EE NRPC nrebops@yahoo.com Vikram Singh EE NRPC nrebops@yahoo.com Sukhvinder kr. ASE NRPC nrebops@yahoo.com NRLDC D.K. Jain DGM NRLDC 9910344127 dkj2009@yahoo.co.in S. R. Narasimhan Chief Manager NRLDC, POWERGRID 9811723041 srnarasimhan@gmail.com Alok Kumar DM (S-O-I) NRLDC POWERGRID 9999039321 alokwaghela@hotmail.com J.P Singh Engineer NRLDC POWERGRID 9891662140 Jaiprakash17@rediifmail.com PGCIL R. K. Singh Manager PGCIL, NR-1 9873918545 raviksin@yahoo.com Anoop singh Ch. Mgr. OS NR-2 9419211836 anoops@powergridindia.com R.K. Pandey Dy. Manger PGCIL, NR-1 987398528 Rkpandey.pg@gmail.com BBMB R. K. Lamba Dy. CE/PR BBMB 9417216058 dirpeo@bbmb.nic.in PSEB A.K. Matharu Dir. PR&C PSEB 9646118004 pcpatiala@rediffmail.com K.S. Jolly Adv. PSEB PSEB 9646118002 Jolly4666@rediffmail.com SJVNL R.K. Agarwal GM SJVNL 9418027582 rk.agarwal@sjvn.nic.in R.P. Singh Director (E) SJVNL HPGCL R.K. Bansal SE Planning HPGCL 9356779028 seplanninghpgcl@yahoo.com S. S. Dalal SE HPGCL 9355084677 Swaroop6007@gmail.com THDC Name Designation Organisation Mobile No. E-mail Dr. Kuldip singh AGM (EM-D) THDC Ltd. 9411109224 rsdkin@sify.com NHPC Virender Kr Dy. Mgr NHPC Ltd. 9818659766 vknhpc@gmail.com NTPC R. K. Jain AGM (OS) NTPC 9415114058 rkjain03@ntpc.co.in Y. Sri Niwas DGM (OS) NTPC 9650993033 ysriniwas@ntpc.nic.in Charanjit Singh Dy. Mgr (OS) NTPC 9650993072 channisagoo@yahoo.com UPPTCL Gautam Banerjee EXN UPPCL 9415233473 V.P. Trivedi CE UPPCL 9415115119 Trivedivp2007@rediffmail.com S. P. Gupta S.A.E UPPCL 9415609301 Guptagp2003@yahoo.co.in HPSEB Suneel Grover Dir. HPSEB 9816096666 grover_in@yahoo.co.in

26

(PR&CERC) S.D. Rattan CE (SO) HPSEB 9418001953 POWERLINKS P. K. Pal GM (P&O) Powerlinks 9415009321 pkpal@powerlinks.co.in RRVPNL A.K. Arya Xen RRVPNL 9414061066 ldrvpnl@yahoo.co.in Nareder Gehlot AAE RRVPNL 9413383194 ldvpnl@yahoo.co.in PDD, J&K Jatinder Sharma SE J&K, PDD 9419189640 pddjatindersharma@rediffmail.com HVPNL R.C Malhotra SE SLDC/OP HVPNL 9357214739 Rcmalhotra.hvpn@gmail.com IPGCL/PPCL R.K. Yadav Mgr IPGCL 9717694845 Rajendra805@gmail.com S.P. Singh DGM IPGCL/PPCL 9717694904 Spsingh.ppcl@yahoo.com DTL B.B. Sharma GM DTL 9540040610 Gm.om@delhitransco.gov.in SLDC Delhi B.C. Mathur GM SLDC 9818648217 Mathurbc50@gmail.com NDPL/BSES Sunil Kakkar DGM BSES 9312147042 Sunil.kakkar@releanceada.com Jayanta Chatterjee AGM NDPL 9818100625 Jayanta.chaterjee@ndpl.com PTCUL Rakesh Jain DGM SO SLDC Rishikesh 9412075187 Side1@rediffmail.com HPPC Atul Pasrija Dy. GM HPPCHVPNL 9317722824 dgmlthppc@gmail.com MPCL Anil Kr. Garg AGM-BD MPCL 9910796444 Anilgarg@lnjbhilwarra.com CPRI K. Mallikarjunappa Joint Director CPRI 9448282333 mallik@cpri.in

27

Anexure-II

Status of Procurement of Additional 30% UFRs and df/dt Relays

Rajasthan • The purchase order (PO) for 52 UFRs and 17 df/dt relays was placed on 13.3.2009 on

M/s Areva T&D India Ltd. • Despatch instructions for 52 Nos. UFRs and 17 Nos. df/dt relays had been issued on

9.10.09. Punjab 35 numbers df/dt relays were to be installed in the system. Haryana • No. of UFRs to be installed was 15 not 22 as reported earlier. • Out of 15 UFRs required, 13 UFRs had been commissioned. Remaining 2 UFRs (out

of 15) would be installed by November, 2009. • Three out of six Nos. df/dt relays had been installed. • Haryana to submit the settings and location for the relays. • There are 36 RLSE in the system. • Additional UFRs would be provided in the system. Powers delegated to field level

officers. Uttar Pradesh • UP has indicated that they have sufficient number of relays in their system. • UP to submit the locations of Under Frequency relays installed, load relief provided by

these relays and their functional status. Uttarakhand Numerical relays already installed in the system had been set for df/dt operation.

28

Annexure-III

Status of Replacement of Porcelain Insulators with Polymer/Antifog Insulators (As reported by constituents) Name of the constituent

Voltage level Lines where insulators to be replaced Type of insulator (polymer/antifog)

Remarks

Total Insulator Strings (Nos)

Insulator Strings replaced (Nos)

Scheduled completion date for replacement of balance insulators $

DTL 400kV 8212 nil Dec, 09 Polymer Procurement for 400 kV in process through PGCIL, ordered in 04/09, supply of first lot by Nov 09. Tenders for installation being awarded. In the meanwhile 500 insulator strings being arranged on returnable basis from POWERGRID.

220kV nil Antifog Taking action for procurement of Antifog insulators

HVPNL 220kV 11798 3292 March/April 2010. Antifog Work on seven lines completed. Balance 11 would be completed by March/April, 2010.

UPPTCL 400kV 1000 80 NA Polymer 1027 insulator strings replaced,

220kV 1000 629 NA Polymer

PGCIL NR-I 400kV 29876 19835 12/09 Polymer 19835 insulator strings replaced. Would be completed by Dec, 09

220kV 831 - Polymer Would be completed by Dec, 09 HVDC

Rihand-Dadri 4608

164

11/09 Polymer Would be completed by Nov, 09.

HVDC Balia-Bhiwadi

2080 0 11/09 Polymer HVDC Balia-Bhiwadi line would be provided with polymer insulators. Pole-I expected in May, 2010.

PGCIL NR-II 400kV 19620 5779 11/09 Polymer 5779 Strings installed, 1200 Strings available in store. Replacement for balance would be done by Nov'09. Procurement order for insulator strings required for phase-II (12,615 No.) and phase-III (10,000 No.) had been placed. Delivery of material expected in Dec/Jan’2010. 400 kV Moga-Bhiwadi line (expected in Dec 2009) would also be provided with polymer insulators.

220kV 380 380 Completed Polymer

BBMB 400kV 2016 June, 2010 Polymer Matter regarding obtaining statutory clearances with greater length of insulators in respect of 400 kV polymer insulators referred to CPRI/CEA .

29

220kV 3541 06/10 Polymer Delivery of insulators expected in April, 2010.

400kV 264 264 Completed Antifog About 16000 insulators discs replaced, 23500 to be replaced by Nov, 09. Remaining 8525 antifog insulators expected to be received in Mid Dec, 2009 and shall be replaced by Dec, 2009.

220kV 2654 700 12/09 Antifog

POWERLINKS 400kV 1956 1956 04/09 Polymer Work Completed PSEB 220 & 132 kV 13000 421 Nov/Dec 09 Antifog 421 strings with antifog insulators replaced.

Replacement on 37 lines would be completed by 20th Dec., 2009. 13982 Nos. antifog insulators available in stock. Delivery of 3000 more expected in November, 2009

RVPNL 220 kV 6942 2301 Nov/Dec 09 Antifog 940 Nos likely to be replaced by Nov, 2009. Out of 390 strings of polymer insulators required 174 strings had been completed. Balance completion expected by 1st Dec, 2009.

Note: $ The schedule was decided as 31-03-2009 in the 10th NRPC meeting held on 30-09-2008.

30

Annexure-IV

Status of Commissioning of New Generating Units in 2009-10/2010-11 2009-10

Name of the Plant/Unit

Agency Capacity (MW)

Expected Date of Commissioning

Rajasthan Barsingsar Lignite NLC 2x125

U#1 -Syn. on 27.10.09 and U#2 -April, 2010.

Chhabra TPS RRVUNL

2x250

Unit -1 commissioned on 30th October, 2009. Unit -2 Likely to be synchronized in Jan., 2010, Expected DoS May., 2010.

Kota TPS (Unit-7) RRVUNL 195 Synchronized on 30th May, 2009, Expected DoS Nov., 2009.

Suratgarh TPS ( Unit - 6 )

RRVUNL 250 Synchronized on 31st March, 2009, Expected DoS Nov., 2009.

RAPP-5 and 6 NPCIL 2x220 Unit-5 Dec, 2009. Unit -6 February, 2010.

Jallipa Kapurdi TPP (8x135 MW)

Raj West Power Ltd (JSW)

4 units in 2009-10

Unit 1 commissioned on 16.10.09 COD ( for three units in Nov, 09, Jan, 2010 and March 2010).

Bihar (NR States have Share) Kahalgaon Stage-II, U-3

NTPC 500 Synchronised on 28.6.2009. CoD by December, 2009.

Uttar Pradesh

NCP Project St-II U-5 &6

NTPC 2X490 U#1- Syn. –December, 2009 Exp CoD-March ,2010 U#2 -March, 2010

Rosa (Stage-1) Reliance 2X300 Dec, 2009 March, 2010

Haryana

Rajiv Gandhi Thermal Power Plant (Khedar)

HPGCL 2X600 December, 2009 March, 2010

Jammu & Kashmir

Sewa-II NHPC 3x40 January, 2010

Himachal Pradesh

Alian Duhangan AD Hydro Power Ltd.

2x96 Unit -1: Nov., 2009 Unit -2: Feb., 2010

31

2010-11 Name of the Plant/unit

Agency Capacity (MW) Expected Date of Commissioning/ synchronization

Himachal Pradesh Chamera-III NHPC 3x77 Dec, 2010 Budhil LANCO 2x35 Unit-1, June-2010.

Unit-2, July, 2010 Ganvi-II HPSEB/

HPPCL 1x10 During FY 2010-11.

Bhaba Aug. HPSEB/ HPPCL

4.5 During FY 2010-11.

Malana-II Everest Power Pvt. Ltd.

100 During FY 2010-11.

Uttar Pradesh Parichha UPRVUNL 2x250 Unit-5, Nov- 2010.

Unit-6, Dec, 2010 Harduaganj UPRVUNL 2x250 Unit-8, Dec-2010.

Unit-9, Dec, 2010 Delhi Rithala CCPP NDPL 108 Jun, 2010 Pragati III (Bawana)

PPCL Two Modules each of (2x250GT+ 1x250 ST)

March, 2010.

Jammu and Kashmir URI-II NHPC 4x60 Unit-1, Nov, 2010.

Unit-2, Dec, 2010. Unit-3, Jan, 2011. Unit-4, Feb-2011

Nimmo Bazgo NHPC 3x15 December, 2010 Chutak NHPC 4x11 Feb, 2011 Uttarakhand Koteshwar THDC 4x100 Unit-1, October, 2010.

Unit-2, December, 2010. Unit-3, February, 2011. Unit-4,March, 2011

Haryana (Delhi has share)

Indira Gandhi Super Thermal Power Project-Jhajjar

NTPC (JV) 3x500 Unit-1, July, 2010. Unit-2, October, 2010. Unit-3, January, 2011

Rajasthan Jallipa Kapurdi TPP (8x135 MW)

Raj West Power Ltd (JSW)

4 units in 2010-11

32

Annexure –V A Progresss of Installation of HT Shunt Capacitors (rated 11 kV and above) in Northern Region As on 31-10-09 Constituents Total

requirement as per NRPC

HT shunt capacitors (rated 11 kV level

and above)

installed upto 31-03-09

BBMB capacitors

apportioned to utilities

Total New capacitors required during

2009-10

Capacitors added up

to

Balanced capacitors to be added during 2009-10

Defective capacitors need revival

Defective shunt capacitors revived in 2009-10

MVAR MVAR 31-10-09

1 2 3 4 5=3+4 6=1-5 7 8=6-7 9 10 Chandigarh 157 102 25 127 30 0 30 3 8 Delhi 2097 3456 20 3476 0 0 0 10 0 Haryana 4175 3164 195 3359 816 0 816 322 0 Himachal Pradesh 551 514 0 514 37 0 37 135 0 J & K 1271 147 0 147 1124 0 1124 170 0 Punjab 6479 5576 137 5713 767 186 581 264 17 Rajasthan 4269 3785 0 3785 484 8 476 184 235 UP 7261 5812 0 5812 1449 0 1449 1910 163 Uttarakhand 586 353 0 353 233 0 233 35 0 Total 26846 22909 377 23286 4940 194 4746 3032 423

Monthly Progress of Installation of Shunt Capacitors in NR During 2009-10 (T=Target, A=Achievement) STATE / UT April May June July Aug Sept Oct Nov Dec Jan Feb March Total T A T A T A T A T A T A T A T A T A T A T A T A T A Chandigarh 0 0 0 0 0 Delhi 0 0 0 0 0 Haryana 0 0 0 0 Himachal Pradesh

0

0 0

0 0 0

J & K 0 0 0 0 0 Punjab 0 27.15 76.02 39.413 35.33 8.17 0 186.079 Rajasthan 0 0 4 3.6 0 0 7.6 UP 0 0 0 0 Uttarakhand 0 0 0 0

TOTAL 0 0 0 27.15 0 76.02 0 43.413 0 38.93 0 8.17 0 0 0 0 0 0 0 0 0 0 0 0 0 193.679

33

Monthly Progress of Revival of Defective Shunt Capacitors in NR DURING 2009-10 Total

defective capacitors

(As on 31-10-09)

Capacitors revived during TOTAL (Revived) in 2009-

10

STATE / UT APRIL MAY JUNE JULY AUG SEPT. OCT. NOV. DEC. JAN. FEB. MAR.

Chandigarh * 2.5 0 0 0 0 2.5 2.5 2.5 7.5 Delhi * 10 0 0 0 0 0 Haryana * 322 0 0 0 Himachal Pradesh * 134.8

0 0

0 J & K * 170 0 0 0 0 Punjab * 264.09 1.577 10.262 0 0 1.857 3.43 17.13 Rajasthan * 184.251 0 10 11 5 0.605 7.43 201.402 235.4 UP* 1909.76 2.5 0 0 40 120 162.5 Uttarakhand * 35.3 0 0 0 0

TOTAL 3032.24 4.077 20.262 11 45 124.962 9.93 207.332 0 0 0 0 0 422.6 Note * Actual defective capacitors reported.

34

Annexure-VB Progress of Installation of Shunt Capacitors and Status of Revival of Defective Capacitors Rajasthan

• Tenders for purchase of 325.80 MVAR capacitor has been opened on 30.6.09 and is under process of finalization

• In addition to above, initiation for procurement of 135.75 MVAR Capacitor banks is being taken for installation in the financial year 2009-10 in Dausa, Bhiwadi, Alwar, Phulera and Khetri area.

• Order for repairing of old defective capacitor for 750 Nos. has been placed with M/s. Sharda Electronics Company, Sangli and joint inspection for 381 Nos. capacitor banks has been carried out for repairs. The firm repaired 381 numbers capacitor banks and requested to depute inspector for verification.

Punjab

• P.O dated 04.12.08 has been placed on M/s ABB for the supply of 138.682 MVAR (Total 67 Banks) capacity capacitor banks.

• 40 banks (each 1.361 MVAR) have already been supplied by the firm (total 54.44 MVAR). Balance lot of 22 banks (1.361 MVAR each) and 5 banks (10.86 MVAR each) are expected by the end of November-09.

• Another P.O. dated 20.07.09 for the procurement of loose capacitor units (333.25 MVAR) has also been placed on M/s Shreem. The firm has recently supplied the entire ordered quantity of 1500 Nos. (each 137.234 KVAR) and 200 Nos. (each 182 KVAR).

• The capacitor banks under installation are expected to be commissioned by December-09

Haryana

• HVPNL plans to install 470 MVAR shunt capacitor. Two nos of POs were opened in September,09

• Additional 430 MVAR shunt capacitors planned by DISCOMs. HVPNL had provided the schedule to DISCOMs.

Uttar Pradesh Order had been placed for purchase of 360 MVAR capacitors.

Uttarakhand

• 33.2 MVAR Capacitor Banks ordered on M/s BHEL Bhopal and M/s Shreem Capacitors, Maharashtra.

BBMB

• 10 MVAR defective capacitor banks revived in July, 2009. 12.4 MVAR had to be revived. • 61 MVAR capacitors getting procured by PSEB. Jammu & Kashmir

Bids received from three vendors for 932 MVAR shunt capacitors. Out of this 531 MVAR is planned in phase –I and 401 MVAR in phase-II.

Himachal Pradesh

• In the process of purchasing 37 MVAR new capacitors

35

Annexure-VI

Over Drawal by NR Constituents in OCTOBER, 2009 OD when freq <=49.2 Hz

All figs. in MUs

Date Chandigarh Delhi Haryana HP J&K

OD

No. of OD

Blocks OD

No. of OD

Blocks OD

No. of OD

Blocks OD

No. of OD

Blocks OD No. of OD Blocks 01-10-2009 0.17 24 0.49 13 0.53 16 0.27 22 1.07 24 02-10-2009 0.10 13 0.16 6 0.90 13 0.17 13 0.19 13 03-10-2009 0.09 11 0.00 0 0.35 7 0.02 3 0.19 11 04-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 05-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 06-10-2009 0.04 3 0.04 1 0.30 3 0.00 0 0.10 3 07-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 08-10-2009 0.01 2 0.00 0 0.17 2 0.00 0 0.08 2 09-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 10-10-2009 0.02 2 0.05 1 0.17 2 0.00 0 0.09 2 11-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 12-10-2009 0.00 1 0.00 0 0.12 1 0.00 0 0.05 1 13-10-2009 0.05 7 0.21 7 0.28 4 0.27 7 0.50 7 14-10-2009 0.01 2 0.00 0 0.15 2 0.03 1 0.17 2 15-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 16-10-2009 0.00 0 0.00 0 0.14 1 0.01 1 0.09 1 17-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 18-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 19-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 20-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 21-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 22-10-2009 0.01 1 0.00 0 0.31 3 0.05 1 0.17 3 23-10-2009 0.00 0 0.04 1 0.16 1 0.00 0 0.10 1 24-10-2009 0.00 0 0.01 1 0.21 2 0.00 0 0.17 2 25-10-2009 0.00 1 0.00 0 0.15 2 0.03 2 0.17 2 26-10-2009 0.03 6 0.02 2 1.30 30 0.46 30 2.39 31 27-10-2009 0.01 1 0.00 0 0.21 4 0.02 2 0.42 4 28-10-2009 0.04 7 0.00 0 0.82 15 0.26 13 1.84 15 29-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 30-10-2009 0.00 1 0.00 0 0.00 0 0.00 1 0.11 1 31-10-2009 0.00 1 0.00 0 0.02 1 0.00 1 0.09 1

TOTAL 0.59 83 1.02 32 6.28 109 1.62 97 8.00 126

Date Punjab Rajasthan UP Uttarakhand Railways

OD

No. of OD

Blocks OD

No. of OD

Blocks OD

No. of OD

Blocks OD

No. of OD

Blocks OD No. of OD Blocks 01-10-2009 0.42 12 0.32 13 7.24 24 0.36 19 0.01 9 02-10-2009 0.33 7 0.26 10 3.81 13 0.00 2 0.01 7 03-10-2009 0.19 6 0.14 8 3.07 11 0.10 4 0.00 5 04-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 05-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 06-10-2009 0.01 2 0.00 0 0.58 3 0.12 3 0.00 3 07-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 08-10-2009 0.07 2 0.00 0 0.95 2 0.06 1 0.01 2 09-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 10-10-2009 0.08 1 0.01 1 0.62 2 0.03 1 0.00 2 11-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 12-10-2009 0.05 1 0.01 1 0.28 1 0.02 1 0.00 0 13-10-2009 0.39 7 0.05 3 1.36 7 0.25 7 0.01 7 14-10-2009 0.06 1 0.00 0 0.39 2 0.15 2 0.00 1

36

15-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 16-10-2009 0.07 1 0.00 0 0.27 1 0.06 1 0.00 0 17-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 18-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 19-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 20-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 21-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 22-10-2009 0.07 1 0.08 3 0.59 3 0.13 3 0.00 2 23-10-2009 0.04 1 0.03 1 0.05 1 0.00 1 0.01 1 24-10-2009 0.00 0 0.08 1 0.24 2 0.15 2 0.01 2 25-10-2009 0.10 2 0.06 1 0.09 2 0.13 2 0.00 2 26-10-2009 0.13 8 0.42 23 4.24 28 1.40 30 0.10 26 27-10-2009 0.10 2 0.05 2 0.98 4 0.27 4 0.02 4 28-10-2009 0.00 1 0.25 9 2.56 15 0.85 15 0.10 15 29-10-2009 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 30-10-2009 0.00 0 0.00 0 0.19 1 0.08 1 0.00 1 31-10-2009 0.01 1 0.00 0 0.19 1 0.06 1 0.00 1

TOTAL 2.11 56 1.76 76 27.69 123 4.20 100 0.30 90