叶巴滩水电站成功下闸蓄水 首批机组发电进入倒计时

Core Viewpoint - The Yebatan Hydropower Station has successfully begun water storage, marking the preparation phase for the commissioning of its first generating units, which is a significant project under China's 14th Five-Year Plan [1][2]. Group 1: Project Overview - The Yebatan Hydropower Station is located on the Jinsha River at the border of Sichuan and Tibet, with an average elevation of 3000 meters and a total installed capacity of 2.24 million kilowatts [2]. - The reservoir has a total capacity of 1.08 billion cubic meters, and the concrete pouring for the dam began in August 2022, with plans to complete the first dam section by September 2025 and to start power generation by the end of 2025 [2]. Group 2: Construction Challenges - The construction faced challenges such as two instances of flood disasters from the Bai Ge landslide lake, as well as harsh environmental conditions including high altitude, low pressure, and severe cold [2]. - Technical difficulties were overcome, including high dam seismic resistance, winter continuous construction, and temperature control to prevent cracking, with no temperature cracks found in the dam's concrete so far [2]. Group 3: Operational Plans - Water storage will occur in two phases: the first phase aims to raise the water level to the dead water level of 2855 meters by the end of the year, while the second phase will raise it to the normal storage level of 2889 meters by October next year [2]. - This operational strategy will enhance the coordinated operation capacity of the hydropower stations along the upper Jinsha River [2]. Group 4: Environmental Impact - Once operational, the Yebatan Hydropower Station is expected to generate an average annual output of over 10.2 billion kilowatt-hours, which will save nearly 4 million tons of standard coal and reduce carbon dioxide emissions by approximately 7.37 million tons annually [3]. - The clean electricity generated will be transmitted to Central China via the world's highest UHVDC project, the Jinsha to Hubei ±800 kV UHVDC transmission project, contributing to the optimization of China's energy structure and regional economic development [3].