Collapsed National Grid Receiving Attention – TCN

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The Transmission Company of Nigeria (TCN) has announced that the national grid, which collapsed at about 11a.m on Wednesday, is receiving attention.

It is the seventh time in a year that the grid is collapsing and businesses and homes went into darkness 
The government agency said in statement issued on Thursday that the failure was a result of a sudden drop in system frequency from 49.94Hz to 47.36Hz, which created system instability.

According to the statement signed by the TCN spokesperson, Mrs. Ndidi Mbah, the aggregate generation of 457mw was lost to the system collapse, whereas it affected other grid-connected units in the plants.

“Transmission Company of Nigeria (TCN) wishes to inform the general public that the experienced system disturbance at about 11.27am today, 20th, July 2022. The incident was a result of a sudden drop in system frequency from 49.94Hz to 47.36Hz, which created system instability.”

Reports obtained from the National Control Centre (NCC), showed that it was precipitated by the tripping of a Unit (with a load of 106 MW) in one of the generating stations due to exhaust over temperature.

The situation, it was said, pulled out other grid-connected Units in the plant, resulted in aggregated generation loss of 457mw. In its wake, a train of ensued – culminating in the collapse of the national grid.

“As obtainable in all systems, when a component of the electric system is defective, the entire configuration is vitiated. However, in-spite of setbacks encountered at the initial stage, grid restoration had almost been completed as at 11:00pm when this report was filed.

“The electricity supply industry appreciates the kind understanding of government and consumers of electricity within and outside the country. We are committed to leveraging the concerted interventions instituted thus far to enhance supply reliability so that the issue of system collapse will soon become a thing of the past”, she added.

The collapse of the on Wednesday was the seventh in a series this year.


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