The Transmission Company of Nigeria (TCN) has identified sudden rise in frequency from 50.33Hz to 51.44Hz as the cause of the latest National grid collapse on Thursday.
A statement by TCN spokesperson, Ndidi Mbah, noted that disturbances at the grid, a second in the space of 3 days, started at approximately 11:29 am Thursday morning.
Mbah said that recovery efforts began immediately, and the Abuja Axis was restored within 28 minutes, adding that recovery is still ongoing.
The TCN further disclosed that the frequency spike was caused by issues encountered at one of our substations, which had to be shut down to prevent further complications.
The company noted that it is actively engaged in significant repair work on several critical transmission lines and substations.
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This includes the 330kV 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.
“Furthermore, following the submission of the investigative report on the causes of previous grid collapses, we have begun addressing the identified weaknesses in the transmission system.
“Efforts are 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. We acknowledge the impact of these disruptions and ask for the understanding and patience of the public during this challenging period,” the statement read in part.
The company said it remains committed to improving the reliability of electricity supply, recognizing the vital role that stable power plays in Nigeria’s socio-economic development.
“We assure the public that all necessary measures are being taken to ensure the grid’s long-term stability, in line with the recommendations of the investigative committee, while also addressing infrastructure damage such as vandalized transmission lines,” it added.
Thursday’s development adds to the growing cases of grid collapses in the country.
On Tuesday, several parts of Nigeria were thrown into blackouts after the system experienced a collapse. Millions of homes were without power and waiting for the full restoration of the system.
The TCN blamed that incident on “a series of lines and generators trippings that caused instability of the grid and, consequently, the partial disturbance of the system.
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