- Category: Companies
13 Nov 2013
- Written by Lenie Lectura
THE National Grid Corp. of the Philippines (NGCP) said the restoration works on transmission lines damaged by Supertyphoon Yolanda (international code name Haiyan) will last up to six weeks.
“It will take five to six weeks to repair the backbone and main lines. Majority of these are situated in the Visayas area. Assuming nothing else happens, the restoration will take five to six weeks,” said NGCP Spokesman Cynthia Perez-Alabanza.
As of November 12, a total of 566 structures of NGCP, composed of 248 towers and 318 poles, were destroyed. Seven substations were also damaged.
“The damage is by far the worst ever. We don’t have an estimate as to how much the damage costs, because our focus is to quickly repair and restore power back in affected areas,” said Alabanza.
The NGCP official said there are available funds to put up new towers that can withstand up to 270 kilometers per hour (kph) of sustained wind. The towers that were destroyed, she said, are old and can only sustain up to 185 kph of sustained wind. “These are ongoing efforts even before. We are working hard to bring electricity to affected areas by Christmas. We have already tapped as many NGCP personnel as we can,” she added.
NGCP is prioritizing the following lines for restoration: Ormoc-Cabacungan 350 kilovolts (kV), Marshalling-Tabango 230 kV, Ormoc-Babatngon 138 kV, Ormoc-Maasin 138 kV and Ormoc-Simangan 69 kV.
In Panay the NGCP has identified the Dingle-Panit-an 138-kV line and the Nabas-Altabas 69-kV line as priority lines for restoration.
Apart from restoring the lines and energizing the substations, NGCP also monitors the power situation in the Visayas as many power plants went offline due to the super typhoon.
The total capacity of the Visayas grid is 1,058 megawatts (MW), with a peak demand of 1,158 MW.
This supply-and-demand situation caused by limited power supply might result to load shedding or curtailment in some municipalities in the Visayas region.
Loss of power may be caused by affected transmission facilities of NGCP or distribution facilities of local distribution utilities or electric cooperatives. Specific cities and municipalities affected by the power interruptions are determined by concerned distribution utilities, unless the outage affects the entire franchise area.