General layout of Shisangling Pumped Storage Power Station and relative technical problems

摘要

Shisanling Pumped Storage Power Station is located at Shisanling Scenic Spot, on the north of Beijing, 40 km from center of the city. The existing Shisanling Reservoir is taken as lower reservoir, and the upper reservoir is built on the Shangsi gully behind Mang mountain ridge, on the left bank of the lower reservoir. The max. static head and horizontal length of water way system of the Station are 481 m and about 2300 m respectively. The underground powerhouse and water way system are built inside Mang mountain. Four Francis reversible pump-turbines with 200 MW each are installed in the power house. The power station began to be constructed in 1992, and generated power with first unit at the end of 1995. The power station is connected to Beijing-Tianjin-Tangshan Power Grid with Double-circuit line of 220 kV to carry out the tasks of modulating peakload and emergency reserve in the Grid. After all the units of the power station are put into operation, the capacity for peaking hydropower and the installed capacity of pumped storage power stations in the Grid will come up to 8.3% of total installed capacity, so that the dispatching ability of the Grid will be more flexible, ensuring the Grid operation safe, stable and economic.