1. FREQUENCY EVENTS NTPC (INJECTION - DC) ISSUES NLY – II STAGE 1 (INJECTION - DC) NLY – II STAGE 2 (INJECTION - DC) NLY TPS I (Exp) (INJECTION - DC) ULDC ISSUES RESERVOIR LEVEL TALCHER STAGE II (INJECTION - DC) UI TRANSACTION HYDRO GENERATION COMP.. 2002-03-04 390 TH OCC - 07 – DECEMBER – 04. DEMANDVOLTAGE PROFILE TALCHER - KOLAR SCH Vs DRL 3D SR UI RATE NOV - 04 3D ER UI RATE NOV - 04

2. FREQUENCY df/dt & d 2 f/dt 2 FREQ DURATION CURVE 3D FREQ NOV - 04 TYPICAL FREQ GRAPH 3D FREQ NOV - 03 FREQ COMPARISION NOV-03 & NOV-04 3D FREQ OCT - 04 HISTOGRAM OF FREQ 2002 – 03 – 04

3. DEMAND ANTICIPATED Vs ACTUAL DEMAND INDICES 3D DEMAND NOV - 04 LOAD DURATION CURVE 3D DEMAND NOV - 03 DEMAND Vs FREQ NOV-04 3D DEMAND OCT - 04 MAX, MIN & AVG STATE DRAWAL

4. 390 TH OCC - 07 – DECEMBER – 04. MORE LINKS TO REACTIVE 3D VIRTUAL REALITY STATE 3D VIRTUAL REALITY ISGS/INTER-REGIONAL MUST SEE

5. 3D VIRTUAL REALITY DEMAND ANDHRA PRADESH KERALA KARNATAKA TAMIL NADU STATE SCHEDULE ANDHRA PRADESH KERALA KARNATAKA TAMIL NADU STATE DRAWAL ANDHRA PRADESH KERALA KARNATAKA TAMIL NADU STATE UI ANDHRA PRADESH KERALA KARNATAKA TAMIL NADU PONDY GOA PONDY GOA PONDY GOA

6. 3D VIRTUAL REALITY ISGS INJECTION NTPC NLY-II STAGE II NLY-II STAGE I TALCHER STAGE II ISGS UI INTER-REGIONAL EXCHANGES WR ER NEYVELI TPS I (Exp) MAPS KAIGA SPARE NTPC NLY-II STAGE II NLY-II STAGE I TALCHER STAGE II NEYVELI TPS I (Exp) MAPS KAIGA SPARE

7. MORE LINKS TO REACTIVE REACTORS POSITION CAPABILITY CURVES REACTIVE ENERGY LOW VOLTAGE REACTIVE ENERGY HIGH VOLTAGE

8. 0 10 20 30 40 50 60 70 80 90 100 NOV-04 NOV-03 <49 HZ49-50.5HZ>50.5HZ Nov-040.3399.630.04 Nov-030.0699.910.03 1.LIGNITE / COAL SHORTAGE 2.S/D OF KADAMPARI UNITS

9. FREQUENCY CURVE FOR 11 th NOVEMBER 2004 FVI = 0.13 Avg Freq = 50.04Hz COMPARISION

10. FREQUENCY CURVE FOR 19 th NOVEMBER 2004 FVI = 2.33 Avg Freq = 49.58Hz TN O/D ~300 MW KER O/D ~150 MW

11. FREQUENCY COMPARISION FVI = 0.13 AVG FREQ = 50.04HZ 11-NOV-04 FVI = 0.14 AVG FREQ = 49.93HZ 17-OCT-04 FVI = 0.04 AVG FREQ = 49.99HZ 09-SEP-04

12. COMPARISON DEMAND INDICES FOR NOVEMBER 2004 TABLE

13. DEMAND INDICES FOR NOVEMBER 2004

14. LOAD DURATION CURVE OF SOUTHERN REGION FOR NOVEMBER 2004 & NOVEMBER 2003 0 10 20 30 40 50 60 70 80 90 100 NOV-04 NOV-03

15. REACTIVE ENERGY DRAWAL DURING LOW VOLATGE CONDITION In Mvarh Nov-04

16. REACTIVE ENERGY DRAWAL DURING HIGH VOLATGE CONDITION In Mvar Nov-04

17. MAXIMUM & MINIMUM DRAWAL NOV-04 STATEAVG DRAWAL MAX DRAWAL NOV 04 TILL NOW ENTITLEMENT WITH TAL 1500MW 2000MW MIN DRAWAL NOV 04 TILL NOW AP6101130 18901230 1338- 190 - 1070 KAR12002015 21301239 1347 470 - 140 KER600 960 1040794 873260 20 TN11801900 27302128 2265125 - 100 PONDY160210 235240 25790 10 APR-04 OCT-04APR-04 MAR-04 FEB-04 AUG-04 OCT-03 DEC-03 AUG-04

18. SCHEDULE Vs DRAWAL  ANDHRA PRADESH  U/D THROUGHOUT THE DAY  NOT FOLLOWING THE PRICE SIGNAL  KARNATAKA  METICULOUSLY FOLLOWS THE PRICE SIGNAL  KERALA  FOLLOWS THE PRICE SIGNAL  SOME O/D DURING EVENING PEAK  TAMIL NADU  HEAVY U/D DURING NIGHT OFF-PEAK & O/D DURING EVENING PEAK  NOT CONDUSIVE FOR SECURE & ECONOMIC GRID OPERATION. GRAPHS

19. TALCHER-KOLAR IMPORT OF 13447MUs FROM ER THROUGH TALCHER-KOLAR UPTO NOV-04 YEAR --->200220032004 MONTHS TOTAL ENERGY (IN MU) MAX FLOW (IN MW) TOTAL ENERGY (IN MU) MAX FLOW (IN MW) TOTAL ENERGY (IN MU) MAX FLOW (IN MW) JAN--- 311850 8051528 FEB--- 2731010 7011508 MAR--- 4911316 8371600 APR--- 4731183 9231500 MAY--- 1721026 6521385 JUN--- 277994 6881416 JUL--- 3191075 7591490 AUG--- 3461088 6281341 SEP62005121533 7421552 OCT585005081458 8291550 NOV775004701048 7191600 DEC241750 6301383 TOTAL382 4782 8283 AVERAGE96 399 753 MAX FLOW 750 1533 1600

20. DEMAND INDICES - COMPARISON May-04Jun-04Jul-04Aug-04Sep-04Oct-04Nov-04 ANDHRA PRADESH LEAN/PEAK0.760.790.78 0.770.730.71 AVG/PEAK0.870.89 0.90 0.88 KARNATAKA LEAN/PEAK0.630.620.640.620.680.690.74 AVG/PEAK0.77 0.82 0.830.840.87 KERALA LEAN/PEAK0.570.550.500.510.54 0.53 AVG/PEAK0.710.680.640.650.67 TAMILNADU LEAN/PEAK0.700.770.790.800.710.680.62 AVG/PEAK0.830.880.89 0.830.820.79 SOUTHERN REGION LEAN/PEAK0.730.750.760.780.750.720.70 AVG/PEAK0.830.850.870.900.870.84

21. RESERVOIR LEVEL - COMPARISON LEVEL IN MTS LEVEL 30-Nov-03 LEVEL 30-Nov-04 JALAPUT 837.48836.17 LINGANMAKKI 545.35548.61 SUPA 534.73545.48 IDUKKI 715.65772.96 KAKKI 969.19972.43 NILGIRIS TOTAL ENERGY 30-Nov-03 ENERGY 30-Nov-04 RISE IN MU % RISE 514440- 74-14 2148270856026 1062178772568 947141346649 5286128416 5591463904162 57588423266546 Only 7500MUs Reserve till next monsoon (6 Months) 40 MUs/day could be generated as against about 70 MUs/day at present.

22. ANTICIPATED Vs ACTUAL CONSUMPTION FOR NOVEMBER – 04 DESCRIPTION ANDHRA PRADESHKARNATAKAKERALATAMIL NADU SOUTHERN REGION ANTPD. ACTUAL ANTPD. ACTUAL ANTPD. ACTUAL ANTPD. ACTUAL ANTPD. ACTUAL THERMAL 57662933006256148155 DIESEL + GAS 55000.5 5410.59.5 HYDRO 1718282718.520101573.580 IPPs 46361711001788055 CONSUMPTION PER DAY 14414297 3335132112406386

23. MAJOR EVENTS 1.FREQUENCY DURING NOVEMBER 2004 :- >>99.63% WITHIN IEGC RANGE. 2.NO UFR OPERATION DURING NOVEMBER – 04. 3.AROUND 20 MU PER DAY OF COSTLY GENERATION NOT DESPATCHED.AROUND 20 MU PER DAY OF COSTLY GENERATION NOT DESPATCHED 4.SR MET A DEMAND OF 20,184 MW IN NOVEMBER – 2004SR MET A DEMAND OF 20,184 MW IN NOVEMBER – 2004 (VERY CLOSE TO LAST YEAR) 5.GROUND RETURN MODE TESTING CARRIED OUT ON KOLAR HVDC POLES FROM 20-NOV-04 TO 01-DEC-04GROUND RETURN MODE TESTING CARRIED OUT ON KOLAR HVDC POLES FROM 20-NOV-04 TO 01-DEC-04 6.TESTING OF POD OF TCSC ON 400 KV D/C RAIPUR - ROURKELA LINES ON 19- NOV-04. 1.TALCHER – KOLAR POLE II BLOCKED @ 11:21 HRS. 2.FLOW CAME DOWN FROM 1600 MW TO 1000MW 3.FREQ CAME DOWN FROM 49.91 HZ TO 49.50 HZ 4.TALCHER – KOLAR POLE II DE-BLOCKED @ 11:39 HRS.

24. DEMAND Vs FREQUENCY FOR 23-NOV-04

26. ISSUES 1.VOLTAGE CONTROL 1.PARTICIPATION OF GENERATORS IN REACTIVE POWER MANAGEMENT 2.SWITCHING OFF CAPACITORS DURING NIGHT. 3.EXPEDITION OF NELLORE ICT 4.400KV LINE OPENING WHICH IS NOT CONDUCIVE TO SECURE GRID400KV LINE OPENING WHICH IS NOT CONDUCIVE TO SECURE GRID 2.ISGS REQUESTED TO PROPERLY DECLARE THEIR DC AS PER CERC NORMS.ISGS REQUESTED TO PROPERLY DECLARE THEIR DC AS PER CERC NORMS 3.COAL SHORTAGE PROBLEM AT PIT-HEAD STATIONS LIKE TALCHER STAGE II RESTRICTING CHEAPER POWER. 4.JUDITIOUS UTILISATION OF HYDRO RESERVES FOR SUMMER DAYS AHEADJUDITIOUS UTILISATION OF HYDRO RESERVES FOR SUMMER DAYS AHEAD 5.FREQUENCY DIP IN THE EVEVING PEAK HOURS DUE TO OVER DRAWAL BY TN IN THE RANGE OF 100-450MW AS WELL AS UNDER DRAWAL (200-1000MW) DURING LEAN PERIODS PUSHING FREQUENCY TO ABOVE 50Hz.OVER DRAWAL BY TN IN THE RANGE OF 100-450MW AS WELL AS UNDER DRAWAL (200-1000MW 6.REGULATION OF GENERATION AT SRISAILAM TO THE BENEFIT OF THE ENTIRE REGIONREGULATION OF GENERATION AT SRISAILAM TO THE BENEFIT OF THE ENTIRE REGION 7.INADEQUATE RESPONSE OF GENERATORS IN FREE GOVERNOR MODEINADEQUATE RESPONSE OF GENERATORS IN FREE GOVERNOR MODE LAST 19-11-04NTPC

27. SR – ULDC NTPC, RAMAGUNDAM FIELD INPUTS EXTENSION –NTPC to extend field inputs for the following –MW&MVAR of LV/HV side of U# 7. –MW&MVAR of 400kV side GT's & Tie- transformer. –MW&MVAR of 132kV feeder 1&2 & MVAR of NSR 1&2 line reactor. –OLTC of 5 ICT's –CB closed status for all feeders,units & transformer. –SOE's for all feeders,units & transformer. –Closed status for all isolators. –TO BE EXPEDITED ULDC TRAINING –DATABASE TRAINING SCHEDULED FROM 22 nd NOVEMBER TO 4 TH DECEMBER 2004 - COMPLETED

28. ULDC TRAININGS CONDUCTED SO FAR BY SRLDC SLNAME OF THE TRAININGFROMTO ParticipantsMan days 1 CISCO ROUTER & NETWORKING 19-01-200424-01-200417102 2XA-21 USER LEVEL23-02-200428-02-20041060 3RTNA WORKSHOP29-03-200431-03-20041442 4AIX OPERATING SYSTEM17-05-200422-05-20041590 5XA-21 USER LEVEL21-06-200425-06-2004630 6DATABASE ADMINISTATION22-11-0404-12-0419228

29. INTER – REGIONAL(01/11/04 TO 28/11/04) (+) IMPORT / (-) EXPORT INTER REGIONAL UI (WR):- +NIL – 13 MU INTER REGIONAL UI (ER):- +4 MU – 4 MU AVG RATE OF EXPORT TO WR IN PS/U –192 PS/U @SR –325 PS/U @WR AVG RATE OF IMPORT FROM ER IN PS/U –79 PS/U @ ER –228 PS/U @ SR AVG RATE OF EXPORT TO ER IN PS/U –433 PS/U @SR –253 PS/U @ER

30. ER – SR UI TRANSACTIONS FACTS PAST DECISION BENEFITS WR BENEFITS ER

31. ER-SR FREQUENCY AND UI FOR 26-NOV-04 09:00 -12:00 Hrs

32. FREQUENCY CURVE FOR 2 nd NOVEMBER 2004 FVI = 0.77 Avg Freq = 49.83Hz

33. 400KV LINES OPENED TO CONTROL OVER VOLTAGE 1.VIJAYAWADA – NELLORE CKT I 2.NELLORE – MADRAS CKT I & II 3.VIJAYAWADA – SRISAILAM I & II. 4.NEYVELI – SALEM II 5.SALEM – UDUMALPET I 6.TRICHY – MADURAI II 7.UDUMALPET – TRICHUR I 8.KOLAR –MADRAS 9.KOLAR-HOSUR II 10.HIRIYUR-NELAMANGALA I 11.HIRIYUR – GUTTUR I

34. FGMO DEAD BANDS & LOAD LIMITERS TO BE WITHDRAWN HYDRO UNITS RESPONSE TO BE CONFIRMED MORE RIGOROUS MONITORING BY SLDCs AND STATION CHIEFs SELF CERTIFICATION STILL AWAITED FROM MANY »RECEIVED FROM NTPC, NLY-II, NLY TPS I (EXP), TTPS, MTPS, NCTPS, VTS, KTS, RYTPS, SIMHADRI, LANCO, SPECTRUM & GVK

35. AUTOMATIC VOLTAGE REGULATOR OPERATION Quote 6.2 (j) All generating units shall normally have their automatic voltage regulators (AVRs) in operation, with appropriate settings. In particular, if a generating unit of over fifty (50) MW (10 mw incase of North-Eastern region) size is required to be operated without its AVR in service, the RLDC shall be immediately intimated about the reason and duration, and its permission obtained. Power System Stabilisers (PSS) in AVRs of generating units (wherever provided), shall be properly tuned as per a plan prepared for the purpose by the CTU from time to time. CTU will be allowed to carry out tuning/checking of PSS wherever considered necessary. Unquote CERC Order ON ‘IEGC’ dated 21.12.1999