According to the Gansu Provincial Electric Power Company, China's first large-scale clean energy transmission UHV DC project (the Jiuquan-Hunan Project), with a total investment of 26.2 billion yuan, which transmits wind and solar power from Gansu directly to Hunan Province, was officially put into full operation on the 23rd.
According to the Gansu Provincial Electric Power Company, the Jiuquan-Hunan Project, namely the Jiuquan-Hunan ±800 kV UHV DC transmission project, is a key power grid project in China's "West-to-East Power Transmission" plan. Once the project's benefits are fully realized, it can transmit 8 million kWh per hour. Calculated based on 5,000 hours of transmission per year, it can transmit 40 billion kWh to Hunan annually, meeting one-fourth of Hunan's electricity demand. The Jiuquan-Hunan Project starts from Guazhou County, Jiuquan City, Gansu Province, traverses the thousand-mile Hexi Corridor, passes through five provinces and municipalities including Gansu, Shaanxi, Chongqing, Hubei, and Hunan, and ends at Xiangtan County, Xiangtan City, Hunan Province, with a total line length of 2,383 kilometers. The project newly builds two converter stations, Qilian and Shaoshan, with a total converter capacity of 16 million kW and a rated transmission capacity of 8 million kW.
A relevant person in charge from the Gansu Provincial Electric Power Company stated that the Jiuquan-Hunan Project has enormous economic, social, and environmental benefits, and is of great significance for promoting the development of Gansu's energy base, expanding the consumption range of new energy, and improving air quality.
The person in charge said that the Jiuquan-Hunan Project started construction in June 2015 and was fully connected at the end of December 2016. This cross-regional transmission channel, which specifically serves the delivery of Jiuquan wind power and solar power, fully adopts China's self-developed UHV DC transmission technology and equipment.
