Analysis of energy dissipation in allowable, restricted and prohibited operating areas of wanjiazhai francis turbine

Abstract

Abstract With the “14th Five-Year Plan” and the “two-carbon” policy, the application of renewable energy has seen a substantial increase. As a kind of hydraulic machinery which converts the kinetic energy of water into electric energy, the turbine is widely used in various hydropower stations. However, due to the variability of flow rate, speed and head, how to ensure the efficiency of unit operation is particularly important in complicated working conditions. In this study, the Francis turbine of Wanjiazhai Hydropower Station is taken as the research object. Through the combination of numerical simulation and experiment, the energy consumption under the permitted, restricted and forbidden conditions is analyzed.