Multi-Objective Optimization Based Joint Dispatch Model of Wind-Solar-Hydro-Thermal Pumped Storage

Abstract In this paper, a joint dispatch model of wind-solar-hydro-thermal pumped storage was proposed, taking into account of the basic requirements of minimum system operation cost, minimum load fluctuation and multiple constraints guarantee. Used NSGA-II multi-objective optimization algorithm to solve the problem, so as to verify the feasibility of the model. The model with good adaptability in multi-objective function can optimize the power of pumped-storage units aiming to improving the peak and valley volatility of the net load with pumped storage, and it can optimize the output of thermal power units with the goal of minimizing system operating costs. The pumped-storage effect can be effectively used to relieve the peak load pressure of thermal power units, which can provide a good reference for comprehensively improving the level of renewable energy utilization and increasing comprehensive benefits.