Xinjiang Electric Power Transmission to Sichuan and Chongqing UHV DC and transmission terminal supporting projects were approved

China News Service, Urumqi, October 23 (Cui Fuhai, An Qi, Liu Hui Reporter Zhang Sanchun learned from State Grid Xinjiang Electric Power Co., Ltd. on the 23rd that the Xinjiang Electric Power (Southern Xinjiang) ±800 kV UHV DC project for power transmission to Sichuan and Chongqing and four supporting 750 kV projects at the transmission end have recently been approved by the National Development and Reform Commission and the Xinjiang Development and Reform Commission, marking significant progress in the planning and construction of my country's fourth Xinjiang power transmission UHV DC channel.

The Xinjiang Electric Power (Southern Xinjiang) Sichuan-Chongqing ±800 kV UHV DC project is a key cross-regional energy channel for the country’s west-to-east power transmission. The project starts from Ruoqiang County, Bazhou, Xinjiang, and ends in Mianyang City, Sichuan, passing through Qinghai Province. The total length of the line is 1,995.6 kilometers, with a transmission capacity of 8 million kilowatts. Xinjiang and Sichuan each build a new converter station. The total investment in the project is about 30.6 billion yuan. After the project is completed, it can effectively develop and utilize the scenery and photovoltaic resources in southern Xinjiang, promote the transformation of Xinjiang's resource advantages into economic advantages, strengthen the power supply capacity in Sichuan and Chongqing, and increase the proportion of regional green electricity consumption.

It is understood that the four 750 kV transmission-side supporting projects that have been approved simultaneously are all located in Ruoqiang County, Xinjiang. Two new 750-kilovolt substations have been built, with an additional substation capacity of 9 million kVA and 268.1 kilometers of 750-kilovolt lines. The total investment is 3.256 billion yuan. They mainly serve the collection and stable delivery of UHV DC transmission power. At the same time, the preliminary design work of four 750 kV supporting projects was advanced in an orderly manner and successfully passed the review of the State Grid Economic and Technology Research Institute.

Since the launch of the project, State Grid Xinjiang Electric Power has set up a special work team to complete key tasks such as on-site surveys, supporting agreement processing, thematic demonstrations, and signing of long-term agreements with high quality and efficiency. It has deepened government-enterprise collaboration, overcome difficulties, and achieved simultaneous approval of the main UHV project and the supporting power grid project at the transmission end.

In the next step, State Grid Xinjiang Electric Power will advance construction preparations in an orderly manner based on the approval and preliminary design results, and in accordance with the deployment of the autonomous region and State Grid Corporation of China, strictly control safety, quality, and cost, advance project construction at the earliest opportunity, ensure that the project is put into operation on schedule, and continue to improve the ability to optimize the allocation of cross-regional energy resources.