National security status granted to 500kV power transmission

09:54 | 06/07/2018 Energy

(VEN) - Prime Minister Nguyen Xuan Phuc recently decided to include the 500kV power transmission system in the list of projects crucial for national security by economic development.

national security status granted to 500kv power transmission
Maintaining a 500kV power transmission line through the central region

Backbone function

A report by the National Power Transmission Corporation (EVNNPT) shows that as of March 31, 2018, the corporation managed about 24,365km of power transmission lines and 140 transformer stations totaling 77,613MVA in capacity, including 7,503km of 500kV power transmission lines and 28 500kV transformer stations.

Significant investment has been made in the 500kV system enabling it to play an important role in transmission of power from such major power centers as Son La, Lai Chau, Quang Ninh, Mong Duong, Vung Ang, Vinh Tan, Phu My, and Duyen Hai. It also functions as the backbone linking power networks in the northern and southern regions.

Two major 500kV grid lines have increased the country’s north-south power transmission capacity and contributed to ensuring safe and stable electricity supply for the country’s socioeconomic development. The north-south grids of branches 1 and 2, put into operation in 1994 and in 2004, in addition to the 500kV Pleiku-My Phuoc-Cau Bong transmission line put into use in May 2014 have also enhanced power supplies to the south to overcome delays plaguing many power projects there.

Further development of 500kV grids

An EVNNPT representative says the corporation will continue to develop power transmission grids to meet growing demand. From now to 2020, EVNNPT will develop and put into operation 172 transmission grid projects, including 38 500kV projects and 134 220kV projects with a combined transformer capacity of 35,262MVA and an additional 6,976km of power transmission lines. By 2020, the number of 500kV transformer stations will increase to 34.

Power transmission grid projects to be put into operation from now to 2020 include a 500kV line of branch 3, 500kV grids of Vinh Tan, Song Hau, and Long Phu power centers, and projects supplying power to such big localities as Ho Chi Minh City, the capital Hanoi, and key economic zones nationwide.

Under the plan, in June 2018, the corporation will begin a project to develop a 500kV line of branch 3 (going through eight provinces and one city from Vung Ang to Pleiku 2) along 742km at a total cost of almost VND11.95 trillion. The project is expected to go on line in 2019 and play an important role in enhancing the capacity to transmit power from northern and central regions to the south.

The government’s recognition of the 500kV power transmission system as a project of national security importance

has not only improved the system’s standing but also encouraged EVNNPT to do a better job in power grid

management and operation.

Dinh Dung