WATER STORAGE ELECTRIC POWER PLANT WITH CONTROLABLE SUCTION HEAD

摘要

The invention discloses advanced pump storage hydro power plant with three machines, arranged to horizontal or vertical shaft: a water turbine, an electromagnetic generator-motor, and a single or multistage pump. The essence of the advancements presents a third sleeve from a penstock comprising a third closing valve and at least one ejector, installed into the suction tube of the pump for control of the pressure, velocity and twirl of the water in front of the impeller by injection of high-head water and simultaneous extraction of water from the lower reservoir. The advancements: - eliminate known auxiliary equipment and installations applied for starting up of the motor-pump, - provide switching on/off of the motor-pump without disturbing impact neither on plant's parts nor on the electric power system, - enable real time control of the motor load in response to the variable economic and technical conditions at the electric power market.