Research on Two-stage Optimization Scheduling of Microgrids Considering the Switching Frequency of Electric Vehicle Charging and Discharging
Scheduling the charging and discharging of electric vehicles can suppress load fluctuations in the power grid,but frequent switching of the vehicle's charging and discharging status during the scheduling process can affect the battery life of the vehicle.Therefore,a two-stage optimization scheduling strategy for microgrids considering the switching frequency of electric vehicle charging and discharging is proposed.The first stage is the planning and scheduling stage,with the goal of minimizing net load fluctuations in the power grid.From a global perspective,the charging and discharging plans for electric vehicles at each time period are formulated,and the optimal time of use charging and discharging electricity price is obtained;The second stage is the actual optimization stage,aiming to minimize the deviation between the actual charging and discharging power of electric vehicles and the charging and discharging plan power of the first stage,minimize the number of charging and discharging switching times of electric vehicles,and minimize the charging and discharging cost for users.The charging and discharging status of all electric vehicles in the system at each time period is optimized.Finally,the effectiveness and practicality of the proposed scheduling strategy were verified through numerical simulations.
electric vehiclescharging and discharging switchingbattery lifetwo stage optimization
万方数据
维普
