TCN Restores Ailing Grid Asset


TCN working with GenCos, DisCos to improve power supply ― MDYemisi Izuora

Nigeria’s ailing National Grid has been restored by the Transmission Company of Nigeria, TCN, after it suffered collapse on Wednesday.

The company said that the collapse which occurred at about 12:20 p.m. was restored the same day at 4:59 p.m.

TCN’s General Manager, Public Affairs, Mrs Ndidi Mbah said this in a statement in Abuja on Thursday, explaining that the national grid collapse was triggered by a sudden drop in system frequency to 47.21Hz.

She said that reports received from Supervisory Control and Data Acquisition (SCADA); as well as other power generating stations showed that at about 12:20pm; two generating units tripped in one generating station.

“While four equally tripped in another generating station, causing a loss of 261MW and 350MW respectively; bringing the total loss of electricity on the grid to 611MW.

“It is suspected that the sudden loss of 611MW from the grid caused system instability and its eventual collapse. After the collapse, TCN’s system operators immediately commenced the restoration of the grid…By 12:46pm, power supply in Abuja was fully restored from Shiroro Generating Station at 1:05 p.m.

“TCN equally commenced grid restoration from the Delta Power Station, and at 4:59pm, a full restoration of the entire grid was achieved,’’ she said.

Mbah, appreciated the government, electricity customers’ nationwide and international customers for their patience assuring that TCN would continue to work hard to expand and maintain stability of the national grid.

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