Tuesday, April 19, 2016

CEB agrees to recommendations from PUC

Daily News

Sandasen Marasinghe

The Ceylon Electricity Board has agreed with the recommendations made to prevent island wide power failures and to improve the transmission system and system control in the country made by the Public Utilities Commission (PUC). The Public Utilities Commission (PUC) prepared a report following an investigation on the power failures experienced by the country in the recent past.
The PUC has made several recommendations to the CEB based on the facts of the same report to prevent power failures. The CEB has agreed to implement the recommendations. The CEB General Manager M C Wickramasekara informed the PUC in writing the manner that the CEB would implement those recommendations.
In response to the first recommendation to ensure all major generating stations have their generator excites on AVR control and that the reactive power limit of the generators are not curtailed the CEB noted that instructions have already been given to the power plant operators to run the generators on AVR mode without curtailing reactive power limits.
In response to the second recommendation that system control centre shall use all the available reactors to maintain system voltage at plus or minus 5 percent, the CEB noted system control centre always operates transmission system voltage within plus or minus 5 percent. In response to the third recommendation to use "transformer tap staggering" as an interim measure to improve voltage control during low load condition the CEB replied that the suitability of the above voltage control strategy is being investigated. The CEB in its letter for the fourth recommendation to specify a few must run generator units for voltage support responded that CEB will specify some generators to operate out of the merit order to meet the reactive power demands and maintain the voltage within the range.

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