The Transmission Company of Nigeria (TCN) has said that a hotal of 457mw was lost as a result of the system collapse, which also had an impact on other grid-connected units in the plants.
The nation’s power grid crashed on Wednesday, at around 11 a.m. for the seventh time in 2022, leading to a blackout, which had considerable impact on businesses and livelihoods across the country.
In many areas of the country, power has not yet been restored as of Thursday morning.
A statement issued on Thursday, by Mr. Ndidi Mbah, General Manager, Public Affairs, TCN, stated that the system failure “was a result of a sudden drop in system frequency from 49.94Hz to 47.36Hz, which created system instability.”
However, the company claimed that the power grid repair was near completion.
“Transmission Company of Nigeria (TCN) wishes to inform the general public that the national grid 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,” TCN said.
“According to reports obtained from the National Control Centre (NCC), 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”.
“This unwholesome event, which pulled out other grid-connected Units in the plant, resulted in aggregated generation loss of 457MW. In its wake, 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.
“However, in-spite of setbacks encountered at the initial stage, power grid restoration had almost been completed as at 11:00pm when thisi report was filed.
“The Nigerian 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 power supply reliability so that the issue of system collapse will soon become a thing of the past.”