September 23, 2023

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National Grid: TCN Explains Collapse


CEM REPORT | The Transmission Company of Nigeria (TCN) has explained the cause of the recent collapse of the national grid on Wednesday.

The company said the collapse was as a result of sudden drop in system frequency from 49.94 Hertz (HZ) to 47.36Hz, which created system instability.

Explaining, the General Manager, Public Affairs, TCN, Ndidi Mbah, on Thursday in Abuja, stated that reports from the National Control Centre (NCC), revealed that the collapse was precipitated by the tripping of a unit with a load of 106 Megawatts (MW) in one of the generating stations due to “Exhaust over Temperature”.

She added that the tripping pulled out other grid-connected units in the plant, which resulted in aggregated generation loss of 457MW.

”The incident was a result of sudden drop in system frequency from 49.94  Hertz (HZ) to 47.36Hz, which created system instability.

 “A train of events ensued, culminating in the collapse of the national grid.

“As obtainable in all systems, when a component of the electric power system is defective, the entire configuration is vitiated.”

Furthermore, the TCN spokesperson noted that that grid which experienced system disturbance at about 11:27a.m on Wednesday, was almost completely restored as at 11:00p.m.

Mbah, on behalf of Nigerian Electricity Supply Industry (NESI) appreciated the understanding of the government and consumers of electricity within and outside the country, noting that NESI was committed to leveraging on interventions instituted thus far to enhance power supply reliability.

CEM reported that Eko Electricity Distribution Company on Wednesday 20th, July 2022 announced via its twitter that the national grid collapse.

The company attributed the collapse to the blackout experienced in the country.

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