UPDATE: TCN RESTORES POWER TO AFFECTED AREAS IN LAGOS, ABUJA, OTHERS
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Agency Report
The Benin-Egbin 330 Kilo Volt (kV) isolator experienced an arcing incident on Monday at approximately 6:10 p.m., but the impacted areas now have electricity again, according to a Tuesday statement from the Transmission Company of Nigeria.
Arcing is defined as an electrical discharge that happens when electrons move between two conductors, often made of metal, in a gaseous or vacuum-filled environment, according to the News Agency of Nigeria.
In a statement on Tuesday, TCN General Manager of Public Affairs, Mrs. Ndidi Mbah, stated that the arcing resulted in lines tripping and a subsequent interruption of supply to certain locations.
She said, ”however, the incident did not cause a system collapse.”
She explained that ”The lines tripping started earlier at about 2:47 p.m on Monday with a heavy system surge that led to the arcing of Benin-Egbin 330kV line isolator fingers at the Egbin Transmission Substation switchyard.
”This resulted in a tripping at the Egbin Generating Station, which caused the loss of power supply to all the Egbin Transmission Substations’ outgoing lines.
”This led to an exponential increase in load on the Osogbo-Ihovbor 330kV line 1 with serious arcing of isolator terminals on the Osogbo-Ihovbor 330kV line 1.”
According to her, to ensure that the sequence of events does not affect the nation’s grid, the Osogbo – Ihovbor 330kV line was opened to temporarily cut off the flow of electricity on that line.
Mbah said that at about 2:56pm on Monday, the Benin-Egbin 330kV line 1 Circuit Breaker also tripped at the Benin Transmission Substation end.
”This resulted in the loss of supply to Lagos axis, parts of the South West Region, parts of the North Central and Abuja.
”Meanwhile, other areas, including the South Eastern region, North East, and other parts of North Central and South West, had full power supply.
”The line tripping was quickly rectified, enabling the grid controller to restore full bulk power supply through the transmission lines at about 6.10 pm on Monday,” she said.
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