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TCN records total electricity grid collapse

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The Transmission Company of Nigeria (TCN) on Friday revealed that the nation’s electricity grid experienced a total system collapse.

According to the company, the system collapse occurred on Thursday September 28, 2017, even as the country generated about 3,515 megawatts of electricity the day before the occurrence.

TCN which made this known in a statement released in Abuja, said the collapse was due to tripping of three generator units at Egbin power generation station, but that restoration of the grid was at an advanced stage.

It said, “A total system collapse was recorded on September 28, 2017 at 20:03Hrs.

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“Reports obtained from stations and the sequence of events generated by the SCADA system indicated that the system collapse was triggered by the tripping of Egbin Units ST4, ST6 and ST5 at ‘20:03:15, 20:03:32 and 20:03:34’ respectively.

“By this incident, the Nigerian electric power grid lost generation completely before restoration commenced at 20:22Hrs.”

It further stated that a post mortem analysis of the incident, indicated that grid generation reached 4,262.7MW prior to the inception of the disturbance due to capacity under-utilisation, as the operational capability required to maintain grid stability had waned.

This, it said, left the system vulnerable to the extent that perturbations of this magnitude resulted in severe system frequency dip that culminated in system collapse.

 

 

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