The National Grid Corporation of the Philippines (NGCP) has secured regulatory approval for its substation project in Antipolo, Rizal, as well as for its Calaca-Das-mariñas transmission line project, with a combined projects costs amounting to more than P6 billion.
In a decision filed by the Energy Regulatory Commission (ERC), the regulator said that NGCP got the approval for its proposed Antipolo EHV Substation Project, which would require a capital investment of P3.2 billion.
NGCP said the Antipolo Substation, which will be constructed in Barangay San Juan, Antipolo City, Rizal province, will provide the needed N-1 contingency for the San Jose EHV Substation, since the latter will no longer have provision for N-1 contingency starting 2017.
The single-outage contingency, or N-1 contingency requirement of the Philippine Grid Code, is a minimum criterion that should be complied with by the elements in the transmission system.
“The development of the Antipolo EHV Substation would reduce, if not eliminate the congestion at San Jose EHV Substation which may occur during downtime or maintenance of one of the 750 MVA transformers at the San Jose EHV,” NGCP further said its application to the commission.
NGCP explained that the project will bus-in along the existing San Jose-Tayabas 500-kilovolt (kV) line. The initial capacity to be installed is 2-750 MVA, with provision for a 4-750 MVA transformer capacity similar to the San Jose EHV Substation.
The project includes the installation of a 100 MVAR 230-kV reactor for voltage regulation during system minimum load condition.
Meanwhile, to accommodate new power plants that would start operation in 2014, NGCP also sought for ERC approval for its Calaca-Dasmariñas 230-kV Transmission Line Project, which was also approved.
According to NGCP, the current full generation capacity of the new power plants that would come online in 2014 cannot be accommodated because of transmission line capacity limitation and high fault levels. Thus there is a need to reinforce the transmission assets of NGCP in the area.
The Calaca-Dasmariñas Transmission Line project, which has an estimated project cost of P3.1 billion, involves the installation of a
57-kilometers, double circuit, 4 x 795 MCM Aluminum Concrete Steel Reinforced transmission line from Dasmariñas Substation directly connecting the existing Santa Rita-Calaca 230-kV transmission line by-passing Calaca Substation.