Thursday, March 10, 2016

NGCP set to upgrade power lines in Panay



posted March 08, 2016 at 11:10 pm by Alena Mae S. Flores

The Energy Regulatory Commission approved the application of National Grid Corp. of the Philippines to construct new transmission towers that can withstand strong typhoons in northern Panay.
NGCP, which operates the country’s power grids, filed an application with ERC to upgrade the Panitan-Nabas 138-kilovolt transmission line, which would involve the construction of new structures.
ERC said that based on the perusal of evidence filed by NGCP, the upgrading of the Panitan-Nabas 138 kV line would cost P933.77 million.  The project was expected to redound to the benefit of consumers in terms of continuous, efficient and reliable power supply.
The project is also expected to improve the reliability of the Panitan-Nabas 138 kV transmission line which suffered catastrophic damage from the onslaught of super typhoon Yolanda in November 2013, it said.
“It is clear that the wind velocities carried by super typhoon Yolanda were greater than the design wind velocity used in the transmission lines, thus constituting the main cause of the tower toppling,” NGCP said in its application.
The project would involve the construction of 123 new steel towers and structures, in conformity with the required design standards for 138-kV lines.  The structures will provide more reliable clearances between overhead lines and nearby vegetation.
New transmission towers are to be constructed in place of toppled structures. The new towers are to be built at new sites to enable the construction of new foundations.
“However, additional rights-of-way may be required, as other towers shall be located at  new sites to be able to construct new foundations,” NGCP said.
NGCP cited the need to immediately complete the upgrading of the Panitan-Nabas 138-kV line to minimize exposure to fault along the temporary by-pass lines and avoid load curtailment at the Panitan substation.

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