Core Insights - The completion of key milestones at the Shangyi Pumped Storage Power Station marks its progression towards the commissioning of the first generating unit [1][3] Group 1: Project Milestones - The Shangyi Pumped Storage Power Station has successfully completed the formal dam water storage and the installation of the rotor for the first unit, indicating the project is entering the critical phase of power generation [1] - The rotor assembly weighs 372 tons, with an outer diameter of 5450 mm and a height of 3390 mm, representing the heaviest core component in the installation process [3] - The project team achieved a cylindrical tolerance of 0.34 mm and a concentricity of 0.05 mm during the rotor installation, setting a new industry precision benchmark [3] Group 2: Engineering and Construction - The lower reservoir employs a partial seepage prevention design, consisting of a sand retention reservoir, a river dam, and various water inlet/outlet structures [3] - The project has undergone multiple safety assessments and quality inspections prior to water storage, ensuring compliance with design and construction standards [3] - The successful completion of these milestones lays a solid foundation for the adjustment of the first unit's axle line and the overall assembly, facilitating the transition to the water storage debugging phase [3] Group 3: Strategic Importance - The Shangyi Pumped Storage Power Station, located in Zhangjiakou City, Hebei Province, has a total installed capacity of 1400 MW and will play a crucial role in peak shaving, valley filling, frequency modulation, and emergency backup for the Beijing-Tianjin and northern Hebei power grids [4] - The project is expected to enhance the reliability and economic operation of the power system, support the green energy transition, and contribute to achieving the "dual carbon" goals [4]