易县抽水蓄能电站1号机组投产发电 河北又添巨型“充电宝”

Core Viewpoint - The successful commissioning of the first unit of the Yixian Pumped Storage Power Station marks a significant advancement in enhancing the renewable energy capacity and safety of the North China power grid, contributing to the construction of a new energy system in the Xiong'an New Area and surrounding regions [1][4]. Group 1: Project Overview - The Yixian Pumped Storage Power Station has a total investment of 8.022 billion yuan and a total installed capacity of 1.2 million kilowatts, with a designed annual pumped storage electricity of 24.09 billion kilowatt-hours and an annual power generation capacity of 18.07 billion kilowatt-hours [1]. - The newly commissioned unit can generate 300,000 kilowatt-hours of electricity per hour, and the project is expected to reduce coal consumption by approximately 126,000 tons and cut carbon dioxide emissions by about 213,000 tons annually [1]. Group 2: Technical Challenges and Innovations - The construction of the Yixian Pumped Storage Power Station faced significant technical challenges due to its underground cavern structure, including high burial depth, large cross-sections, and multiple intersections [3]. - Innovative construction techniques were employed, such as the use of electric excavators, loaders, and drilling equipment, achieving the first electrification in tunnel construction within the hydropower industry in China [3]. Group 3: Strategic Importance - The commissioning of the first unit is the first pumped storage unit to be put into operation in southern Hebei since the 12th Five-Year Plan, playing a crucial role in optimizing the energy structure and ensuring reliable power supply in the province [4]. - The project is expected to inject stronger momentum into the high-quality development of pumped storage, facilitating the construction of a new energy system [4].