Simulation and Analysis of Optimizing the Hydraulic Transition Process of a with Double Surge Tanks

Abstract

Due to the hydraulic characteristics of the runner, the hydraulic transition process of the pumped-storage hydroelectricity is complicated, and it has a greater impact on the safe operation of the waterway system. Therefore, simulation and analysis of the hydraulic transition process are essential when designing a pumped-storage hydroelectricity. Based on the four-image characteristic curve of the pump-turbine runner of a pumped-storage hydroelectricity with double surge tanks, guide vane closing laws, and the layout of the water delivery system, this paper conducts computer simulation and analysis of the hydraulic transition process of the power delivery system. This paper also presents how the representative parameters (e.g. unit rotation speed and pressure in the water delivery system) of the water delivery system change in various cases. The results show that the various indexes of the hydraulic process of the pumped-storage hydroelectricity meet the control requirements. This paper also provides the optimization to the design of the water delivery system of the pumped-storage hydroelectricity.