China’s under construction 750 kV ultra-high voltage power transmission project has successfully completed crossing operations in Dushanzi Grand Canyon, Xinjiang Ugyur region. The section shares an investment of USD 301 million.
Apr 17, 2023
A section of China’s under-construction 750 kV ultra-high voltage power transmission project in Xinjiang Uygur region successfully crossed the Dushanzi Grand Canyon in Karamay on April 10, 2023. USD 301 million was invested in the section.
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The line set a new record for the longest span of 1,346 meters in the history of UHV power grid construction in the region. The section runs approximately 427.5 kilometers, connecting 750 kV substations established in Ili Kazak autonomous prefecture, Bortala Mongolian autonomous prefecture, Wusu city in Ili, and Manasi county in Changji Hui autonomous prefecture.
The project involves complex construction work for various crossing operations, presenting a range of challenges, including distance, low visibility, and large fluctuations in sag caused by wind at 196 different sites, such as railways, highways, power lines, forests, and rivers, with Dushanzi Grand Canyon being among the most challenging. The regional construction began in June 2021 and is helmed by State Grid Xinjiang Electric Power Co.
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The section will boost power transmission capacity from Ili to Changji and enable the optimal allocation of energy resources across different regions, contributing to the overall stability of Xinjiang’s power grid.
