Multi-time scale decision-making method of synergistic dispatch

Large-scale renewable energy source integration brings a significant challenge to the dispatch of power network. The potential synergy among the electrical vehicle charging, wind power and photovoltaic power has provided a workable approach for power grid to accommodate more renewable energy sources. By optimization of charging plan of electrical vehicle charging station of area grid under the premise to meet the energy needs of electric vehicles, this paper can reduce grid equivalent load fluctuation, alleviate peak regulation pressure of thermal units, and improve the ability of receiving renewable energy source. Day-ahead plan, rolling plan and real-time dispatch can gradually reduce adverse effect due to errors of prediction of renewable energy such as wind power and photovoltaic power, and further improve the load characteristic of equivalent load. The final gives an application example based on practical data of an area grid, proves the validity of this model.