Sri Lanka fine-tunes coal power plant to prevent blackouts
ECONOMYNEXT – A 900MW coal-fired power plant that supplies Sri Lanka’s base-load electricity has been fine tuned to make it less sensitive to frequency changes that could interrupt generation, a senior official said.
“We have taken measures to improve generation at the Norochcholai coal power station,” Anura Wijayapala, chairman of the Ceylon Electricity Board said.
“We hope we can control the system better now.”
The Norochcholai power plant, supplied and installed by China, shut down automatically during recent disturbances in the transmission network that had a cascading effect on the system and caused islandwide blackouts.
The island suffered three nationwide blackouts in the past eight months, revealing weaknesses in the systems control and power generation and transmission networks.
CEB and Chinese engineers had fine-tuned the operating parameters of the Norochcholai power plant to make it less sensitive to changes in frequency that had led to the blackouts, Wijepala told a forum on the electricity crisis.
During one of the recent blackouts, an explosion at a transformer that steps down power from high voltage to lower voltage lines, caused instability in the network that shut down Norochcholai.
“Now we’ve taken steps to avoid over reaction of the Norochcholai power plant,” he told the forum held by the Ceylon Chamber of Commerce in collaboration with the Public Utilities Commission of Sri Lanka.
(Colombo/April 26 2016)