The substation consists of two transformers 500kV/900MVA with a total capacity of 1,800MVA. The 500kV and 220kV connecting transmission lines are more than 17km long stretching from Phuoc Minh commune, Thuan Nam district, Ninh Thuan province to Vinh Tan commune, Tuy Phong district, Binh Thuan province.
The 500/220kV Trung Nam substation project in combination with Trung Nam (Thuan Nam) solar power plant completed not only enable exploitation of more than one billion kWh of renewable energy from the plant, but also make an important contribution to releasing capacity from the power grid in Ninh Thuan province and the South Central Coastal region.
Trung Nam 500/220kV transformer substation
This is a work of great significance in contributing to the realization of Resolution No. 115 in 2018 of the Government, making Ninh Thuan province become a national renewable energy center. The completed project aims to concretize Resolution No. 55 of the Politburo, promote renewable energy development, with private participation in generation development and construction of transmission infrastructure.
Sharing his view with evn.com.vn, Mr. Ho Cong - Deputy Director of Power Transmission Company 3 (PTC3) said: In recent years, the company has supported investors in the training, process of construction, installation, acceptance, condition checking and energization of the Trung Nam 500kV substation project connected to the national grid.
PTC 3 has directed its relevant functional departments, Ninh Thuan Power Transmission Company and Binh Thuan Power Transmission Company to support the project investor in training, process of construction, installation, acceptance, condition checking and energization.
For the training, right after receiving the instructions from EVNNPT, PTC3 discussed with the investor to develop a detailed plan, following the schedule of project energization. PTC3 sent forces to participate in the training, who are highly qualified staff with extensive experience in the fields of technical management, operation of the primary circuit equipment, secondary circuit and relay protection, integrated control, telecommunications, safety, fire prevention and fighting, ...
For the construction, installation, and acceptance works, PTC3 had sent technical staff directly to the site for conducting survey of the connection points, promptly approved technical documents, construction plans for connection points at Vinh Tan 500kV substation and at 59-60 tower span of Vinh Tan-Thap Cham 220kV transmission line. During construction of the connection points, PTC3 sent enough manpower to supervise safety, promptly conduct the acceptance to ensure the construction progress and energization on schedule, according to the power-outage schedule of the dispatching levels.
Trung Nam and PTC3 engineers showing their happiness when witnessing the successful energization of 500kV Trung Nam substation and transmission line in the afternoon of 29 September 2020.
For condition checking and energization of connection points, PTC3 sent a highly qualified staff to participate in the process. During inspection, shortcomings at connection points were detected, especially in the secondary circuits and at protective relays. Technical staff of PTC3 directly supported the investor, the design consultants in removing the problems.
According to the Electricity Law, in order to ensure that the national transmission network operates safely and continuously, its operation shall be coordinated by the National Load Dispatch Center, regional dispatch and the unit managing and operating the transmission grid. Therefore, in order to operate the 500kV transmission line project invested by Trung Nam plant, a contract on operation of the 500kV transmission line and two Vinh Tan 500kV bays was signed between Trungnam Group and representatives of Power Transmission Company No. 3 under the direction of EVN and EVNNPT.