This paper studies the nonlinear modeling and operation stability of variable speed pumped storage power station (PSPS). Firstly, basic equations PSPS are established. Nonlinear state equation in form relative deviation value is derived by considering supplementary conditions. Then, Hopf bifurcation analysis carried out. Stable domain studied. Finally, influence factors on analyzed. Dynamic res...

The heavy water condensation problem has led to safety concern for the workers and electrical facilities in underground pumped storage power station. As current dehumidification scheme, heat humidity load are all removed through air conditioning unit, which high energy consumption low efficiency. a large amount of moisture comes from external fresh air, this study, we set system ventilation tun...

Information about the problems arising from uneven production and consumption of energy in power systems, including system Republic Uzbekistan, is given on example a daily electrical load schedule. It noted that to successfully solve these problems, accumulated hours minimum so it can be used peak with high consumption, for this purpose, pumped storage plants are used. A diagram hydraulic at la...

Hybrid hydro energy systems are usually analysed with pumped storage systems, which can facilitate accumulation from other sources. Despite the lack of water storage, run-of-the-river hydropower plants also attractive for hybrid owing to their low investment cost, short construction time, and small environmental impact. In this study, a system that contains power (SHPs), PV batteries serve loca...

With the larger penetration of variable renewable energy resources, the role of energy storage in the power system is becoming increasingly important. The flexibility of operation of hydro and pumped-storage power plants and the variety of ancillary services that they provide to the grid enable better utilization of variable renewable resources and more efficient and reliable operation of the e...