Report of Indian Institute of Public Administration ... - Ministry of Power

Maharashtra
TRANSMISSION
The transmission system of MSEB comprises of a very large network consisting of
132 kV to 400 kV lines and sub-stations as well as a +/- 500 kV, 750 km long, high
voltage direct current (HVDC) transmission line capable of transmitting 1,500 MW of
power. The following table gives the year-wise details of number of sub-stations,
transformation capacity in MVA, circuit km of various voltage levels added in the
period 2001-02 to 2005-06 and proposed expansion of the network in future. The
transmission assets of MSEB have now been transferred to MSETCL.
Table: Details of Transmission System in MSEB/MSETCL
Particulars 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
-02 -03 -04 -05 -06 -07 -08 -09 -10 -11
No. of sub stations
+/- 500 kV 2 2 2 2 2 2 2 2 2 2
400 kV 15 15 16 17 17 18 18 20 23 25
220 kV 106 113 118 120 123 130 145 159 165 171
132 kV and below 301 308 313 322 326 343 358 367 378 387
Total 424 438 449 461 467 493 523 548 568 585
Ckt-km of lines
+/- 500 kV 1504 1504 1504 1504 1504 1504 1504 1504 1504 1504
400 kV 6230 6230 6376 6376 6376 6500 6635 7045 8075 8835
220 kV 10399 10872 11288 11415 11512 12072 12504 13415 14656 16060
132 kV and below 14631 14793 14935 15412 15713 16367 17202 18269 19455 20850
Total 32764 33399 34103 34707 35105 36443 37845 40233 43690 47249
MVA capacity of sub-stations
+/- 500 kV 3582 3582 3582 3582 3582 3582 3582 3582 3582 3582
400 kV 10090 10720 11535 12035 12035 12350 12665 13610 15500 17130
220 kV 18911 19661 21086 22156 23086 26236 30436 36311 39536 42261
132 kV and below 15725 16288 16621 17087 17431 19898 22623 24881 26979 28850
Total 48308 50251 52824 54860 56134 62066 69296 78384 85597 91823
Outlay (Rs crore)
Total outlay 394 333 245 308 228 1054 3680 3762 3188 3011
Evacuation 64 1366 1706 1580 1273
R&M 154 265 233 225 211
A peculiar feature of Maharashtra's power system is, location of major generating
stations in the eastern part of the State at Koradi, Khaperkheda and Chandrapur. Also
major part of the State's share of power from Central Sector projects is delivered at
Koradi/Chandrapur. Major loads are however located in the western part. Thus, power
is required to be transported over large distance of over 700 km, leading to increased
transmission losses. Also, outage of any one of the five 400 kV circuits between east
and west, or outage of a pole of HVDC line, results in a bottleneck, hampering proper
operation of the transmission system.
10.31