Can pumped storage power stations be built among Cascade reservoirs?

The construction of pumped storage power stations among cascade reservoirs is a feasible way to expand the flexible resources of the multi-energy complementary clean energy base. However, this way makes the hydraulic and electrical connections of the upper and lower reservoirs more complicated, which brings more uncertainty to the power generation.

What is a large-scale Cascade hydropower energy storage system (LCHES)?

The retrofitted cascade hydropower system is called the large-scale cascade hydropower energy storage system (LCHES) in this paper. As shown in Fig. 3, the pumping station can utilize external excess electricity to pump water from downstream reservoir back to upstream reservoir, thereby recycling water potential energy. Fig. 3.

Can cascade hydropower stations be transformed into pumped hydro storage systems?

Only , similar to our study work, attempted to transform the conventional cascade hydropower stations to a cascade pumped hydro storage system, where the upper and lower reservoirs used for the pumped hydro storage transformation were two cascade hydropower reservoirs with hydraulic connections.

What is high voltage cascaded energy storage power conversion system?

High voltage cascaded energy storage power conversion system, as the fusion of the traditional cascade converter topology and the energy storage application, is an excellent technical route for large capacity high voltage energy storage system, but it also faces many new problems.

Why do we need pumped storage power stations?

Hence, construction of pumped storage power stations can effectively improve the flexibility of the clean energy base and support the depth of new energy consumption .

What is a cascade hydropower station?

Fig. 6 and Table 1 shows the basic overview of the cascade hydropower stations. The cascade hydropower stations (H1–H2) are assumed to be transformed into a LCHES by adding a pumping station between reservoir H1 and H2; reservoir H1 and H2 are called upper reservoir and lower reservoir, respectively.