Abstract: | Pumped-storage power plants can undertake the tasks of filling valley and modulating peak. It can greatly improve the power system operating conditions, lower system power costs; therefore, a certain percentage of the pumped storage power station in the power system is essential. However, in the pumping conditions, the use of the characteristics of the pump-turbine power input adjustment is more difficult, so that the adjustment of power supply and demand may have certain limits. The new technology not only has the advantage of pumped-storage generation system but also has the ability of control the generation power with high speed, so that the new technology will be spread widely. |