BusinessPower grid performance better under NGCP

Power grid performance better under NGCP


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The National Grid Corp. of the Philippines continues to improve the performance of the power grid since taking over as the country’s transmission service provider in 2009.

NGCP’s overall performance in operating the grid from 2009 to 2022 was significantly better as indicated by improved performance indicators compared to when the grid was run by the government from 2000 to 2008.

Among the key indicators is the frequency of tripping which measures the number of times high-voltage transmission lines registers an error, or experiences forced outages for every 100 circuit kilometers. NGCP’s performance showed a significant decrease in tripping incidents across all three major island grids.

Particularly in the Visayas, the average frequency of tripping has gone down from 6.6530 to 0.9508.

NGCP also improved the capability of the grid to mitigate the impact of power interruptions to overall operations, which are measured by the System Availability indicator, and System Interruption Severity Index.

With NGCP at the helm, system availability for Visayas was pegged at 99.6538 percent. For system interruption, Visayas averaged 47.3318 minutes of interference during NGCP time from an average of 176.3350 system minutes pre-privatization.

“These indicators are the most tangible proof of our performance felt by end-users. Our improved numbers are attributed to the continuous upgrading and expansion projects such as wood pole replacement, substation additions, capacitor bank projects, and new transmission lines, effectively reinforcing the stability and reliability of the grid,” NGCP said in a statement.

All three grids have significantly reduced, if not completely eliminated, violations on frequency and voltage limits.

The average Voltage Limit Compliance improved across all three grids, while Frequency Limit Compliance improved in both Luzon and Visayas, generally ensuring stability of the transmission grid.

“Since NGCP took over transmission operations in 2009, we performed over and above our targets year-on-year. This is a result of the company’s commitment to deliver on our mandate to provide quality transmission services. We assure our stakeholders that NGCP’s ongoing projects and programs seek only to further improve our services,” the company added.

NGCP’s performance indicator ratings are the basis of its incentives, as indicated in the Performance Incentive Scheme which is reviewed and approved every regulatory period by the Energy Regulatory Commission. (PR)

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