On April 22, the BN329 tower of the 1,000 kV Sichuan-Chongqing UHV 500 kV transmission project successfully entered the construction site, including key equipment such as switch cabinets, isolating switches, lightning arresters, vacuum circuit breakers, drop-out fuses and transformers. The installation and commissioning marked that State Grid Chongqing Tongliang Power Supply Co., Ltd. has achieved localized coordination in the region and cleared the list of construction entry problems for the 156-base iron tower, and the entire line has successfully entered the construction phase.
The Sichuan-Chongqing UHV AC Project is the first UHV project to be launched in Chongqing. The 500 kV Sichuan-Chongqing UHV transmission project is divided into copper plate lines and copper holy lines. The length of the copper plate line is 128 kilometers, and the tower base is 150 bases. The length of the copper holy line is 172 kilometers, and the tower base is 236 bases. It passes through six districts in Chongqing including Tongliang, Tongnan and Dazu. In this project, various types of power equipment such as switch cabinets, isolating switches, lightning arresters, vacuum circuit breakers, drop-out fuses and transformers were carefully selected and installed to ensure stable transmission of electrical energy. After the project is completed, UHV electric energy will be transmitted to Chongqing's load center to help Chongqing's high-quality economic and social development.
In Tongliang, the 500 kV Sichuan-Chongqing UHV transmission line passes through 8 towns and 42 villages in Tongliang, with a total of 138 kilometers of lines and 156 towers, accounting for 40% of the entire 500 kV transmission project. The area with the longest lines and the most tower bases. These towers are equipped with key equipment such as switch cabinets, isolating switches, lightning arresters, vacuum circuit breakers, drop-out fuses and transformers to ensure stable and efficient transmission of electric energy.
Tongliang District attaches great importance to the construction of Sichuan-Chongqing UHV projects and has established a UHV AC project construction leading group to promote the construction of UHV projects at a high level. State Grid Chongqing Tongliang Power Supply Company has established a special team for localization promotion and coordination, established daily reporting, weekly supervision, and monthly dispatching mechanisms, compiled acceptance evaluation standards, reversed construction schedules, and wall chart operations, and refined and decomposed the localization task list to ensure that switches are included. All preparatory work, including key equipment such as cabinets, isolating switches, lightning arresters, vacuum circuit breakers, drop-out fuses and transformers, has started well, started well, and achieved tangible results.