TransCo apologizes for Mindanao power outages
Manila (18 September) -- The National Transmission Corporation (TransCo) has issued an apology to electricity consumers in southern Mindanao following the series of power interruptions in the region yesterday.
"We are truly sorry for the inconvenience and problems brought by the repetitive outages to the people in Mindanao. Notwithstanding our operational vigilance, things like this happen on rare occasions. But we know this is not an excuse for taking long to solve the problem. We owe it to the consumers to give them reliable power," TransCo President & CEO Arthur N. Aguilar added.
Technical investigations revealed that the power outages were caused by a malfunctioning transmission line protective relay at the Kibawe substation in Bukidnon. The said protective equipment caused adjacent incoming and outgoing transmission lines to trip.
To prevent a recurrence of the problem, Aguilar said he has ordered a thorough rechecking of all the remaining 68 protective relays installed in strategic substations throughout Mindanao despite the fact that these equipment have been checked earlier as part of their preventive maintenance schedules.
TransCo will also immediately install additional transient recorders at the Kibawe substation and other substations throughout Mindanao to complement in the determination of the root cause of power outages. A transient recorder is a device that electronically records in minute detail the events that transpired in a particular substation.
Meanwhile, Energy Secretary Angelo Reyes expressed the Department of Energy's appreciation to Davao Light and Power Corporation for helping in power restoration efforts by operating their embedded Bajada Diesel Plant in Davao City.
Areas affected by the power interruption include the provinces of Davao del Sur and Norte, Sarangani, South Cotabato, Sultan Kudarat, North Cotabato, Maguindanao and Shariff Kabunsuan, the cities of Gen. Santos, Cotabato, Tacurong, Kidapawan and Koronadal.
Brownout hits Southern Mindanao areas
The Southern part of Mindanao experienced power interruptions following five successive trippings today of the National Transmission Corporation's power system.
The first tripping occurred at around 8:19 this morning at Agus 2, effecting cities of General Santos City, Tacurong, Davao & Cotabato and provinces in Davao, Sultan Kudarat, Maguindanao & Cotabato. Power was restored immediately.
However, second tripping occurred at around 8:55, then at 10:43, at 11:15 and lastly at 12:31 this afternoon. In the last outage, power in General Santos areas was immediately restored through the power supplied by Southern Philippines Power Corporation (SPPC) thru Independent or Island mode grid operations.
According to Emmanuel Abellanose, OIC assistant vice president of Transco Mindanao Operations and Maintenance (Mindanao O & M), power was restored immediately after each of the uinwarranted trippings b y TransCo's System Operations Engineers.
He added that they are still thoroughly investigating the root cause of the unusual yet repetitive outages by focusing the evaluation on the performance of the High Voltage equipment and Protection Devices at Kibawe Substation in Bukidnon and Agua 2 sub station in Sagularan, Lanao del Sur to include the Agus 2-Kibawe 138 KV high voltage transmission lines.
Meanwhile, TransCo Mindanao Q & M Management already dispatched line personnel to conduct foot patrol on the said lines in the hope of findings possible causes of the recurrent trippings. It has informed many the local government officials of the situation and has also sought the assistance of Philippine Air Force to conduct aerial patrol of the said line with their helicopters to reinforce the ground patrol of the linemen.
As of press time, power supply is restored starting 1:15 this afternoon from the TransCo side and the distribution utilities followed.
Abellanosa is appealing to the public for understanding. He said that TransCo reassures the public that they exerted utmost efforts to best handle the problem. (PIA-MMIO/PIA Davao) [top]