抽水蓄能电站成为新型电力系统“稳定器”

Group 1 - The core viewpoint of the articles highlights the rapid growth of renewable energy capacity in China and globally, with China's renewable energy generation capacity expected to increase by over 370 million kilowatts in 2024, contributing to a global total of approximately 4.45 billion kilowatts, a 15% year-on-year increase [1] - The integration of renewable energy sources like wind and solar into the power system poses challenges due to their intermittency and volatility, necessitating stronger regulation capabilities within the power system [1] - Pumped storage power stations are identified as crucial for supporting the development of renewable energy, providing essential energy storage and stability to the power grid [1][2] Group 2 - Pumped storage power stations, often referred to as "super batteries," utilize low-load electricity to pump water to an upper reservoir and release it during peak demand, making them the most mature and economically viable energy storage technology in China [2] - As of the end of 2024, China's total installed capacity of pumped storage power stations is projected to reach 58.69 million kilowatts, with an additional 200 million kilowatts approved for construction [2] - The technology has advanced significantly, with the largest pumped storage power station in the world, Fengning, boasting a capacity of 3,600 megawatts, showcasing China's leadership in this field [2] Group 3 - Current challenges in pumped storage technology include site selection limitations, long construction periods, and insufficient second-level regulation capabilities [3] - The industry is expected to enter a critical phase of large-scale, intelligent, and market-oriented development over the next 5 to 10 years, with a focus on the collaborative development of pumped storage and new energy storage technologies [3] - A multi-level energy storage system combining long-term and short-term storage solutions is proposed to support the stable operation and efficient consumption of high proportions of renewable energy [3]