The Transmission Company of Nigeria (TCN) has said that the national grid restoration was almost completed after it collapsed on Wednesday around 11:00am.
The was revealed by the TCN General Manager of Public Affairs, Mrs Ndidi Mbah, in a statement in Abuja.
According to Mbah, the national grid experienced system disturbance at about 11:27a.m. on Wednesday, but that its restoration was almost completed as at 11:00p.m.
“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,” she said
As gathered by a Geeky Nigeria correspondent, the collapse of the National Grid was caused by the tripping of a unit with a load of 106 Megawatts (MW) in one of the generating stations due to “Exhaust over Temperature”.