Underground tunnel type PSPP

The article discusses the main scheme and advantages of an underground tunnel-type pumped storage power plant (PSPP). Unlike traditional layouts of such stations, the upper and lower basins are located underground and formed by a single tunnel. A description of the design of the new station type and a method for calculating its main parameters were proposed. The analysis showed the limitations that must be taken into account when choosing the main hydraulic equipment for the tunnel-type underground PSPP. Based on the calculations, the optimal diameters of the tunnels were analyzed and identified to ensure the minimum construction period.

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