Tuesday, 20 June 2017

Transmission Company of Nigeria TCN Made Historic Milestone in System Stability

The Transmission Company of Nigeria (TCN) has, for the first time in the last 20 years, maintained grid frequency stability within the operating band of 49.5Hz to 50.5Hz for 24 consecutive hours.This important milestone, which was achieved on the 14th of June, 2017, is a key pointer to the gradual and consistent improvement in the stability of the nation’s transmission grid.

In a statement signed by the General Manager (Public Affairs), Seun Olagunju, the Interim Managing Director of TCN, Usman Gur Mohammed and the entire management once again expressed appreciation to the Generation Companies nationwide for complying with the Grid Code rule, which requires them to maintain the required frequency control.

According to the statement, the free governor control action agreed and implemented since May 22, 2017 has helped in stabilizing frequency and in turn enabled the company achieve a very high level of stability and reliability in the grid - amid operational challenges posed by stormy weather. It is not surprising that the system was able to withstand a sudden power reduction of about 1000 Megawatts on June 4, 2017 following multiple tripping of distribution feeders in the wake of heavy rainfall. It is clear that the Free Governor Control action has helped the system from the spate of total system collapses that would have accompanied these perturbations.
Having achieved this milestone, TCN says it is working assiduously to maintain the trend and also to further improve and stabilize grid frequency at 49.75Hz to 50.25Hz. TCN is working with NERC on the provision of required incentives for GENCOs to provide enough spinning reserve. The company is also committed to implementing all other actions that would lead to sustained system stability.
The company reiterated its commitment to diligently executing its grid expansion and stability plans in the short, medium and long terms as well as working closely with the GENCOs and DISCOs to grow the load capability and deliver quality and stable electricity supply to consumers nationwide.

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