The Transmission Company of Nigeria (TCN) said on Thursday efforts to stablise the national grid which collapsed earlier in the day are ongoing.
The grid collapsed for the second time in 48 hours at 11:29 a.m. on Thursday and the incident was the 11th this year.
The TCN General Manager, Public Affairs, Mrs. Ndidi Mbah, disclosed this in a statement in Abuja.
She said the grid experienced a disturbance due to a sudden rise in frequency from 50.33Hz to 51.44Hz.
She added that the recovery efforts began immediately, and the Abuja axis was restored within 28 minutes.
According to her, the spike in frequency was caused by issues encountered at one of TCN’s substations, which had to be shut down to prevent further complications.
Mbah said: “In addition to this, we are actively engaged in significant repair work on several critical transmission lines and substations.
”These include the 330 Kilo Volt (kV) transmission lines along the Shiroro–Mando axis, major upgrades at the Jebba Transmission substation, and the restoration of the second Ugwuaji–Apir 330kV transmission line.
“Following the submission of the investigative report on the causes of previous grid collapses, TCN had begun addressing the identified weaknesses in the transmission system.
“Efforts were being made to close the gaps highlighted in the report and to enhance the overall stability and resilience of the grid.
“These efforts include both technical upgrades and strategic interventions, based on the committee’s recommendations.
“However, it is important to note that while these repairs and improvements are underway, some degree of instability in the system is likely to persist until all major works are completed.”
“The TCN acknowledges the impact of these disruptions and asks for the understanding and patience of the public during this challenging period,” she said.
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