1. REACTIVE POWER MANAGEMENT IN SOUTHERN GRID

2. OVERVOLTAGE PHENOMENON IN SOUTHERN REGION GRID

3. OVERVOLTAGE PHENOMENON IN SOUTHERN GRID
RESOURCES
REACTORS (LINE AND BUS) MORE DETAILS
TRANSFORMER TAPS
CAPACITORS
GENERATORS
SYNCHRONOUS CONDENSORS
CAPABILITY CURVES
DROPPING LINES ON O/V LOSS IMPLICATIONS
SWITCHABLE LINE REACTORS
IMPACT OF LOW FAULT LEVEL
OFF PEAK AND PEAK FAULT LEVELS
LOW UNIT COMMITMENT IN OFF-PEAK
OUT OF 10,500 MW HYDRO – ONLY 500 MW AT OFF PEAK
OUT OF 85 UNITS > 50 MW:- HARDLY 6-8 RUN AT OFF-PEAK
SC/POWER HANDLED RATIO
KOLAR FILTER
REACTIVE ENERGY
LOW VOLTAGE
REACTIVE ENERGY
HIGH VOLTAGE
REACTIVE ENERGY
BALANCE

4. VOLTAGE SCROLL GRAPHS MAY 2004 APR 2004 MAR 2004 FEB 2004 JAN 2004
REACTIVE ENERGY
SETTLEMENT
RING MAIN SCHEME
KOODANKULAM
SCHEME
VOLTAGE SCROLL GRAPHS
MAY 2004
APR 2004
MAR 2004
FEB 2004
JAN 2004
DEC 2003
NOV 2003
OCT 2003
SEPT 2003
AUG 2003
JULY 2003
JUNE 2003
MAY 2003
APR 2003
MAR 2003

5. ICT TAP POSITION AS ON 02 - JULY - 04

6. REACTIVE ENERGY DRAWAL DURING LOW VOLTAGE CONDITION
June-04
In Mvarh

7. REACTIVE ENERGY DRAWAL DURING HIGH VOLTAGE CONDITION
June-04
In Mvarh

8. KOLAR FILTER OPERATION WITH RESPECT TO POWER FLOW

9. UTILISATION OF KADAMPARAI PUMP STORAGE SCHEME:
ENERGY IN MUs
2000
2001
2002
2003
2004
GENERATOR MODE
PUMP MODE
JAN 4 7 18 39 38 44 58
FEB 6 15 14 46 21
MAR 3 32 51
APR 9 35 40 26
MAY 1 37 43 41 48
JUN 29 45 55
JUL 25 28 47 49
AUG 42 54
SEP 11 36
OCT 20 19
NOV 17
 23
24 
DEC
 49
53 
TOTAL
179
143
130
446
507
193
215

10. CITY RING MAIN SCHEMES

11. CITY RING MAIN NETWORK BANGALORE CITY RING MAIN IN PLACE
CHENNAI RING MAIN PLANNED
HYDERABAD-SECUNDERABAD
TWO 400 KV STATIONS AT PRESENT
THIRD TOUCH POINT AND RING MAIN TO BE PLANNED
TRIVANDRUM
PRESENTLY A SINGLE TOUCH POINT --UNDER CONSTRUCTION

12. BANGALORE 400 KV RING MAIN FROM GOOTY KOLAR NELAMANGALA HOODY
SOMANAHALLI

13. CHENNAI RING MAIN TO NELLORE TO CHITOOR ALMATHI SRIPERUMBUDUR TO KOLAR
MELKOTTAIYUR

14. KOODANKULAM SCHEME

15. KOODANKULAM EVACUATION
400 KV D/C QUAD LINE TO TIRUNELVELI
2nd 400 KV D/C QUAD TO TIRUNELVELI ON SEPARATE ROUTE
LILO OF 400 KV D/C TIRUNELVELI
400 KV D/C TIRUNELVELI-UDUMALPET LINE
400 KV D/C TIRUNELVELI-COCHIN-THRISSUR LINE
400 KV D/C TIRUNELVELI-EDAMON LINE
400 KV D/C TIRUNELVELI-COCHIN-THRISSUR LINE AND THE 400 KV D/C TIRUNELVELI-EDAMON LINE WOULD BE ON THE SAME MULTI-CIRCUIT TOWER USING ROW OF EXISTING 220 KV EDAMON-KAYATHAR LINE.
400 KV D/C TIRUNELVELI-EDAMON LINE TO BE CHARGED AT 220 KV INITIALLY.
400 KV D/C TIRUNELVELI-EDAMON LINE WOULD LATER BE EXTENDED TO TRIVANDRUM

16. MULTI-CIRCUIT TOWER ON 220 KV EDAMON-KAYATHAR CORRIDOR
NLMNG
CHITOOR
KOLAR
HOODY
ALMATHI
HASSAN
SP-BUDUR
S’HALLI
HOSUR
MELKOTTAIYUR
MYSORE
BAHOOR
KOZHIKODE
SALEM
NEYVELI
ARASUR
NLY-EXP
PUGALUR
JAYAMKONDAM
THRISSUR
UDUMALPET
TRICHY
KARAIKUDI
COCHIN
MADURAI
MULTI-CIRCUIT TOWER ON 220 KV EDAMON-KAYATHAR CORRIDOR
EDAMON
KOODANKULAM TRANSMISSION SYSTEM AS APPROVED IN 17TH STANDING COMMITTEE MEETING HELD AT BANGALORE IN SEP03
TIRUNELVELI
TRIVANDRUM
KOODANKULAM

18. AC Harmonic Filters - Kolar
Total MVAR: 1701 Cap.

19. Salient Features Rectifier Talcher, Orissa Inverter Kolar, Karnataka
Distance  1400 km
Rated Power MW
Operating Voltage 500 kV DC
Reduced Voltage 400 kV DC
Overload
Two Hour, 50C 1.1 pu per pole
Two Hour, 33C pu per pole
Half an hour, 50/33C 1.2/1.3 pu per pole
Five Seconds pu per pole

20. SHORT CKT LEVEL

21. ICT TAP POSITION AS ON 04 - JUNE - 04

22. GENERATORS ON SYNCH CONDENSOR MODE: ADVANTAGES
IMPROVED SHORT CIRCUIT LEVELS
CAN BE CONVERTED TO GENERATOR MODE IN SHORT NOTICE
EXCELLENT REACTIVE SOURCE
REDUCED LOSSES
CONTROL VOLTAGE FLUCTUATIONS
NEXT: IDUKKI 3 QUADRANT OPN

23. NEXT: GENERATORS ON SYNCH CONDENSOR
3 QUADRANT OPERATION MW
MVAR
NEXT: GENERATORS ON SYNCH CONDENSOR

24. SYNCHRONOUS CONDENSOR OPERATION: IN OPERATION
S. No
Name of the Generator
Unit No
Installed capacity (In MW)
Remarks 1
N'Sagar 2
100
Running 3 4 5 6 7
SriSailam LBPH
150
Tested 8 9 10 11 12
Iddukki
130 13 14
NEXT: SYNCH COND POSSIBLE AT

25. SYNCHRONOUS CONDENSOR OPERATION: POSSIBLE AT
SL.NO.
POWER STATION
INSTALLED CAPACITY
TYPE OF SCHEME
TYPE OF TURBINE 1
SHARAVATHI
10x103.5
1035 S
V.PELTON 2
JOG
4x18+4x12
120 3
VARAHI
2x115
230 4
KUTTIADI
3x25 75
PELTON 5
KUTTIADI EXTENTION
1x50 50 6
PALLIVASAL
3x7.5+3x4
37.5 7
SENGULAM
4x12 48 R 8
SABARIGIRI
6x50
300 9
IDUKKI
3x130+3x130
780
PEPPARA
PELTON 10 S 3 3

26. PRICE SIGNALS- GENERATORS BOXED UP IN SR:- MAY04
POWER STATION
STATE
CAPACITY(MW)
FUEL
OUT FROM
TATA DIESEL
KARNATAKA 79
DIESEL
14-May-04
BELLARY DGPP 27
01-May-04
YELEHANKA DIESEL
128
16-May-04
THANRBHAVI
220
NAPTHA
SUB-TOTAL
454
BRAHAMPURAM DPP
KERALA
107
18-May-04
BSES
157
KASARGODE PCL 22
KAYAMKULAM
360
646
BASIN BRIDGE
TAMIL NADU
120
KUTTALAM 64
13-May-04
P.P.NALLUR
330
514
TOTAL
1614

27. REACTIVE ENERGY BALANCE
3717 KMS OF 400KV LINE IS UNCOMPENSATED
8401 KMS OF LINE IS COMPENSATED
4736 KMS (27 LINES) COMPENSATED AT ONE END ONLY
TOTAL LINE CHARGING MVAR MVAR
LINE REACTORS:- 53 NOS MVAR
BUS REACTORS:- 8 NOS MVAR
TOTAL MVAR
% COMPENSATION INCL B/R 50 %
% COMPENSATION EXCL B/R 40 %

28. REACTIVE POWER BALANCE FOR SR -PEAK

29. REACTIVE POWER BALANCE FOR SR – OFF PEAK

30. SWITCHABLE LINE REACTOR

31. SWITCHABLE LINE REACTOR
NEW (SINCE 1990) SWITCHYARD CONFIGURATION PROVIDES FOR CONVERTING L/R AS B/R
THIS BECOMES USEFUL DURING
SYSTEM RESTORSTION
CONTROLLING HIGH VOLTAGE
THIS CAN BE EXTENDED TO OTHER S/Y’s
MORE FLEXIBILITY DURING RESTORATION

32. LINE REAC AS BUS REAC POSSIBLE @
NSR - BOTH ENDS
GTY - BLR @ BOTH ENDS
GZK - BOTH ENDS
GZK – BOTH ENDS
NNA - BOTH ENDS– BOTH CKTS
RGM KMM
RGM – HYD