State Grid Corporation announced that Xiluodu Left Bank-Zhejiang Jinhua ±800 kV UHV DC transmission project was officially put into operation, which is currently the world's largest DC transmission project.
The left bank of Xiluodu-Zhejiang Jinhua ±800 kV UHV DC transmission project is referred to as the Xizhe project. It started construction in August 2012, passing through Sichuan, Guizhou, Hunan, Jiangxi and Zhejiang provinces. It is after the upward and Jinsut high-voltage DC project. The State Grid Corporation invested and built another clean energy channel connecting China's southwest hydropower base and the eastern load center. After the project is put into operation, the UHV Sichuan hydropower delivery capacity will be increased to 21.6 million kilowatts. Each year, about 40 billion kilowatt-hours of clean water and electricity will be transported to the East China Load Center in the southwest region, equivalent to saving 12.28 million tons of standard coal and reducing carbon dioxide emissions. More than 34 million tons.
It is understood that the Xizhe project fully verified the technical feasibility and safety and reliability of the UHV DC project to increase the capacity. In the world, the first single-circuit DC project achieved 8 million kilowatts of continuous operation and 8.4 million kilowatts of overloaded transmission operation, creating a large A new record for capacity DC transmission.
With the completion of the Xizhou-Zhejiang project, China has owned 6 UHV lines with “two crosses and four straightsâ€, and initially constructed an energy allocation platform that connects China's large-scale coal-fired power, hydropower, new energy base and east-central load center. As of the end of June this year, the UHV grid has delivered 193 billion kWh of electricity.
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