Multi-objective optimization coordination method for combined supply of large-scale wind power and pumped storage

The invention relates to a multi-objective optimization coordination method for combined supply of large-scale wind power and pumped storage. The method includes: calculating supply stability limit of a wind power and pumped storage combined system, peak-shaving margin of wind power by a grid and thermal stability limit of a transmission line of the wind power and pumped storage combined system, and acquiring the supply stability limit of the wind power and pumped storage combined system; establishing a wind power output mathematical model, and determining output active power data of a wind generator; establishing a power output and energy output model of a pumped storage unit; establishing a multi-objective multi-constraint coordinated optimization model for the combined supply of wind power and pumped storage, and performing optimizing; determining a coordination scheme in priority order of optimization objectives, and selecting a final operation scheme according to actual operational conditions. The method has the advantages that pumping at trough time and generating at peak time can be regulated through the use of pumped storage, utilization rate of wind power is increased, and the influence of large-scale wind power intermittent fluctuations upon operational safety and stability of the grid is reduced.