Domestic transmission line case

2023-10-16

1) Zhumadian ~ Wuhan AC line project


The Zhumadian to Wuhan AC Line project is a project invested and constructed by China Southern Power Grid, which aims to solve the contradiction between energy supply and demand in Zhumadian, Henan Province and strengthen the connection between Zhumadian and Wuhan, Hubei Province. The project has a total investment of 1.64 billion yuan, with a total length of 232 kilometers, including 220 kV transmission lines, cable lines and power transformation works. The design power is 1.2 million kilowatts, and the transmission capacity can reach 3 billion KWH per year.


2) Jinshang-Hubei ±800 kV UHVDC transmission project:


With a total length of 1,362 kilometers and an investment scale of 10 billion yuan, led by the State Grid Corporation, the project aims to stabilize the power supply and demand balance of Jiangxi power grid and Hubei power grid, and the construction period is expected to be 4 years.


3) Sichuan Bangguo Converter station to Hubei Daye converter station ±800 kV DC line project:


With a total length of about 690 kilometers, the project is the longest DC transmission project of China Southern Power Grid, with an estimated investment of 15 billion yuan. The project aims to enhance power connectivity and exchange between the power grids of southern, central and northern China, and construction is in full swing.


4) Zhangbei ~ Shengli 1000kV AC power transmission and transformation Line project (Inner Mongolia section) :


The project, with a total line length of 373 kilometers and a total investment of about 4 billion yuan, is led by the State Grid Corporation to strengthen the power connection between the Inner Mongolia power grid and the power grids of Beijing, Tianjin and Hebei, and is expected to be completed in 2024.


5) Sichuan-Chongqing UHV AC Project Tianfu South - Chengdu East 1000kV line project:


The project is one of the important transmission channels of Sichuan power grid, with an estimated investment of about 1.5 billion yuan and a total length of about 190 kilometers. The project aims to increase the transmission capacity of Sichuan's power grid and is expected to be completed in 2022.


6) Ingmar Power Plant ~ Jhiji Lake to 750 kV line project:


The project, with a total line length of about 109 kilometers and a total investment of about 1.2 billion yuan, is mainly used to strengthen the dispatch and exchange capacity of power resources, led by Jiangxi Power Grid Company, and is expected to be completed in 2022.


7) Tacheng - Usu 750 kV line project:


With a total length of about 74 kilometers and a total investment of about 600 million yuan, the project is an important transmission channel of Inner Mongolia Power Grid, which is constructed by the State Grid Corporation and is expected to be put into operation in 2022.


8) Aorui 500 kV transmission and transformation project:


The project, with a total investment of about 1 billion yuan to strengthen power connections and exchanges between western Inner Mongolia and northern Shaanxi, is led by the State Grid Corporation and is expected to be put into operation in 2023.


9) Zhangbei - Zhangnan Double Loop Line Zhangbei side change access to Bashang 500kV line project:


The project is designed to strengthen the power supply capacity in the Beijing area, with an investment of about 1.1 billion yuan, led by the State Grid Corporation. The project is expected to be completed in 2022.


10) Chengde North ~ Fengning Converter Station 500 kV line project:


Located in Hebei Province, the project, with a total length of about 162 kilometers, is designed to strengthen the power supply capacity of Hebei power grid, with a total investment of about 1 billion yuan. The project is being built by the State Grid Corporation and is expected to be put into operation in 2023.


11) Anhui Southern Anhui grid adjustment Guquan-Jingting 500 kV line project:


The project is used to strengthen the interconnection between southern Anhui power grid and other regions, with an investment of about 900 million yuan, led by Anhui Power Grid Company. The project is expected to be completed by 2022.


12) Zhuhai Southwest outer Ring supporting 500 kV line project:


The project, located in Guangdong Province, uses 500 kV line technology to coordinate power operation in the Pearl River Delta region, with an estimated total investment of about 1.8 billion yuan. The project is expected to be completed in 2023.