By Dominique Gabriel G. Bañaga
The National Grid Corporation of the Philippines (NGCP) yesterday confirmed that one of its 138kV high voltage submarine cable connecting the islands of Negros and Cebu was damaged, limiting the power being supplied between the two islands.
In a statement released by the NGCP, they said the power cable was damaged during dredging and re-channeling activities undertaken by the Department of Public Works and Highways (DPWH) along Bio-os River, located in Barangay Jagna, Amlan, Negros Oriental last June 15.
The said cable which interconnects Negros and Cebu has two circuits of 138kV submarine cable with 90 megawatts (MW) capacity each or a total of 180 MW.
Because of the damage on one of the two circuits, transmission capacity between the two islands is limited only to 90MW.
The NGCP further stated their System Integrity Protection Scheme (SIPS) was automatically activated after the incident to isolate the affected circuit and prevent overloading of the remaining cable.
Initial reports received by NGCP indicate that a contributing factor to the incident was the deviation on the agreed work site by the DPWH.
“The NGCP has requested the local government of Amlan and the DPWH to temporarily stop their operations, and immediately implemented measures to contain the oil spill,” the group said.
They further stated that it is unfortunate that the incident happened at a crucial time when electricity is critical to the ongoing response against COVID-19, although they are assuring their stakeholders that all hands are on deck to restore the affected facility and mitigate the impacts of the oil spill and scattered cable debris.
The extent of the damage was fully assessed between June 23 and 24.
“Coordination is ongoing with partner foreign technical experts for the commencement of actual repair activities,” NGCP added./DGB, WDJ