EVNNPT Upgrades 500 kV Pho Noi Substation in Vietnam
The upgraded Pho Noi substation in Vietnam now operates at a total capacity of 1,800 MVA, following the installation of a new 900 MVA transformer. This enhancement is significant for regional power distribution and reliability.

Vietnam Electricity National Power Transmission Corporation (EVNNPT) has completed the energisation of the Pho Noi substation, which now features a new 500 kV, 900 MVA transformer. The upgrade raises the substation's capacity from 1,500 MVA to 1,800 MVA and includes new feeder bays, a tubular busbar system, and technical enhancements.
The project was overseen by the National Power Transmission Project Management Board, with operational duties assigned to Power Transmission Company 1. This upgrade is expected to improve power supply stability in the region and support future demand.




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