The Transmission Company of Nigeria has announced that Nigeria's electricity grid has recorded a total collapse.
It has been revealed that Nigeria’s electricity grid has recorded a total system collapse.
According to The Punch, the Transmission Company of Nigeria announced this on Friday.
However, it swiftly stated that restoration of the grid was at an
advanced stage and explained that the total collapse was due to tripping
of three generator units at Egbin power generation station.
The daily report on Nigeria’s power sector that was made available
to our correspondent by the transmission company on Friday in Abuja
stated that the grid collapsed totally on Thursday, September 28, 2017,
after the country generated 3,515 megawatts of electricity the preceding
day.
The TCN said, “A total system collapse was recorded on September 28, 2017 at 20:03Hrs.
“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.”
The power transmission firm stated that a post mortem analysis of
the event indicated that grid generation was curtailed to about
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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