Optimization of Collaborative Control Strategy for Guide Vanes and Pressure Regulating Valves Considering Water Loss

The stability of transient processes and the operational efficiency of generating units are the two core objectives of hydropower station operation. The opening time of the pressure regulating valve directly affects the regulation effect of transient processes, while the water loss caused during the operation phase of the pressure regulating valve will reduce the energy efficiency of the units. Balancing these two aspects is a key issue that must be addressed for hydropower stations equipped with pressure regulating valves.This paper focuses on the impact of the opening time of pressure regulating valves on the transient processes of hydropower stations and the optimization of the collaborative control strategy for guide vanes and pressure regulating valves considering water loss. By establishing a simulation model of the hydraulic system, this study analyzes the dynamic influence laws of different opening times of pressure regulating valves on key parameters such as spiral case pressure and unit speed rise rate, and defines the reasonable range of opening time for pressure regulating valves. Aiming at the problem of water loss, the operation duration of the pressure regulating valve is taken as the objective function for optimization, since the shorter the overall operation duration of the pressure regulating valve, the smaller the water loss will be. The optimized collaborative control strategy for guide vanes and pressure regulating valves can balance the operational safety and economy of hydropower stations, and provide theoretical reference for the efficient regulation of hydropower stations equipped with pressure regulating valves.