Tuesday, June 7, 2011
CITY OF SAN FERNANDO -- The National Grid Corporation of the Philippines (NGCP) said the 16-hour blackout last Sunday was caused by a "technical problem" that occurred while it was expanding power sources.
In a statement, NGCP said it was energizing a 300-megavolt ampere (MVA) transformer at the Mexico Substation, so interruptions to power lines in parts of Pampanga occurred.
The scheduled power interruption was originally from 6 a.m. to 6 p.m. However, power transmission was only restored around 10 p.m.
Affected customers were subscribers of Pampanga I Electric Cooperative (Pelco I), Pampanga Rural Electric Cooperative (Presco), Clark Electric Distribution Corp. and Pampanga II Electric Cooperative (Pelco II - Mabiga Substation only).
NGCP officials said the transfer of the feeders from its current source to the new switchyard and the installation of new lines were completed before the scheduled time.
Unforeseen technical problems, however, were encountered by the NGCP team working on the new equipment, which caused delays in the restoration of the facility.
The expansion of power transformers is expected to increase substation capacity to meet power load growth and provide N-1 contingency or back-up to other substations in North Luzon.
A second transformer is scheduled to be energized on July 9, 2011.
Published in the Sun.Star Pampanga newspaper on June 08, 2011.
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