Recently, with the smooth dismantling of the grounding line of the Anhui 4 bid section spanning ± 500 kV Genan Linfeng Line in Qingyang County, the Anhui section of the Baihetan-Zhejiang ± 800 kV UHVDC transmission project was completed.
Baihetan - The Anhui section of the Zhejiang UHV project started on October 18 last year. It starts from Banchang Village, Banzhuyuan Town, Jinzhai County, and ends in Shanliwu, Zhangcun Town, Anji County, Huzhou City, Zhejiang Province (the junction of Anhui and Zhejiang). The length is 492 kilometers, and the 977 base of the new iron tower is built. The terrain and geological conditions along the project are complex. More than 80% of the iron towers are located in the Dabie Mountains and the mountainous areas of southern Anhui, spanning railways, highways, rivers and live lines of 10 kV and above up to 435 times. Among them, the Yangtze River spanning tower of the "Throat" project has a total height of 345 meters and weighs 5,107 tons. For the first time, the ± 800 kV line and the double-circuit AC 500 kV line are used to cross the Yangtze River in the same tower. It is the world's highest UHVDC transmission tower, the heaviest tower, and the most technologically advanced AC and DC dual-use tower.
State Grid Anhui Electric Power Company comprehensively coordinates safety, quality and progress, strengthens the informatization, intelligence and standardization management of the construction site, and strictly controls the key nodes of the project. The on-site construction units cooperate closely to overcome the difficulties of difficult construction technology, high safety and quality requirements, and tight effective construction period. It has successively invested 409 teams and more than 12,000 people, and completed the construction task in only 12 months.
Baihetan - The Zhejiang UHV project is a key project of "West-East Power Transmission". It passes through 5 provinces and cities of Sichuan, Chongqing, Hubei, Anhui, and Zhejiang, with a total length of 2,140 kilometers. After the project is put into operation, the annual transmission capacity will exceed 30 billion kWh, which can replace the installed capacity of coal power 8 quadrillion watts, reduce coal combustion by about 10.57 million tons, and reduce carbon dioxide emissions by 19.19 million tons.