Grid Security Issues To Dominate WREB Meet

Mumbai, Aug 25: | Updated: Aug 26 2002, 05:30am hrs
The Western Region (WR) grid collapse occured on July 30 is expected to dominate the proceedings of the two-day meet of Western Regional Electricity Board (WREB) commencing from August 26 at Nagpur.

Sources told The Financial Express that the WR constituents had already arrived at a consensus that the most vital requirement to ensure grid security would be to maintain system frequency within the permissible range of 49 to 50.5 Hz in all cases.

The WREB meeting would also discuss the system operation during April, May, June and July when the system frequency remained between 49 Hz to 50.5 Hz for 31.43 per cent, 26.41 per cent, 52.63 per cent and 39.97 per cent of the time respectively. Ironically, frequency dipped below 48 Hz on 823 occasions in April, 1,410 in May, 472 in June and 1,165 in July.

According to the WREB report, the maximum registered demand was 22,218 mw during April while the maximum unrestricted demand was 27,473 mw during May. The shortfall varied in the range of 18.43 per cent to 21.64 per cent during the same period. During April, May, June and July daily energy requirement was 565.3 million units (MUs), 557.90 MUs, 488.67 MUs and 491.25 MUs respectively while energy availability was 489.7 MUs, 476.6 MUs, 439.9 MUs and 434.68 MUs respectively. The energy shortfall varied in the range of 9.98 per cent to 14.57 per cent during the same period and the power supply position had been unsatisfactory, the WREB report said.

According to WREB, the load shedding programme by the state electiricy boards of Maharashtra, Madhya Pradesh and Gujarat would have to be drawn on hourly basis based on their hourly availability and requirement. The Gujarat Electricity Board would have to carry out a load shedding of 600 mw to 2,450 mw, Madhya Pradesh State Electricity Board -150 mw to 2,200 mw and Maharashtra State Electricity Board -1,450 mw to 2,873 mw.

Meanwhile, the Nuclear Power Corporation has pointed out that to improve the system frequency and contain overdrawal by a particular state, no manual trippings of lines from nuclear power plants be done as envisaged by the Western Regional Load Dispatch Centre (WRLDC) as it may adversely affect the plant.