The longest overhead transmission line in China is 14 kilometers long, and 30 cross-sea towers have been completed.

News from this site on January 29. According to Xinhua News Agency, it was learned from the State Grid Fujian Electric Power Co., Ltd. that the last phase conductor of the 220 kV Chicuo to Huatang line project was towed in Fuqing City, Fujian Province on January 26. Completed, The longest cross-sea overhead transmission line in China has been fully connected.

According to reports, the Chicuo to Huatang line project is a communication channel between Fuzhou Power Grid and the Southeast Clean Energy Hub. The total length of the line is about 30 kilometers, and it is overhead The line is 23.68 kilometers long, and 79 new iron towers have been built. A total of 30 iron towers are located in the sea, with a cross-sea distance of 14 kilometers.

After the project is completed, will effectively solve the problem of wind power transmission in Fuqing

, and at the same time significantly improve the power supply in Jiangyin Peninsula and Pingtan areas reliability. According to the query on this site, as of the end of 2023, Fujian Power Grid is connected to East China Power Grid through two 1,000 kV North Zhejiang-Fuzhou UHV transmission lines and two 500 kV transmission lines. At the same time, Fujian Power Grid is also connected to Guangdong Power Grid through the Fujian-Guangdong interconnection DC converter station and two 500 kV transmission lines. In this way, a 500 kV backbone grid named "Provincial Ring Network and Coastal Double Corridor" was formed in Fujian Province.

Fujian Power Grid currently has 2 1,000 kV UHV substations with a capacity of 12 million kVA and 811 kilometers of transmission lines; 28 500 kV substations with a capacity of 57.22 million kVA (Hanshuikou Booster Station) , 6,493 kilometers of transmission lines; 233 220 kV public substations, with a capacity of 84.93 million kVA, and 15,305 kilometers of transmission lines; 838 110 kV public substations, with a capacity of 78.11 million kVA, and 21,061 kilometers of transmission lines; 35 kV public There are 523 substations with a capacity of 6.98 million kVA and 12,848 kilometers of transmission lines. In 2023, the electricity consumption of the whole society will be 309 billion kilowatt hours, and the maximum electricity consumption load will be 51.24 million kilowatts.

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