Research on dispatching strategy for coordinated charging of electric vehicle battery swapping station

Large-scale disordered charging behavior of electric vehicle will have a serious impact on the grid,so coordinated charging technology is urgently required to be achieved.Based on characteristics of EV battery swapping station,the coordinated charging dispatching strategy for the control of battery swapping station charging power is proposed.A mathematical model of dispatching strategy based on different objective functions is established and solved by particle swarm optimization(PSO) to get the optimized charging plan of next day.A simulation based on an area's load data is made to show effectiveness of the algorithm.The effect of dispatching strategy for different objective functions on load curve is compared.The changing trends of the objective function value with battery swapping station capacity is analyzed.The results show that the proposed battery swapping station dispatching strategy for coordinated charging can not only lower the peak-valley difference,but also improve the load factor and achieve smoother load profile.