Day-ahead and real-time congestion scheduling method for distribution network with multiple access to electric vehicle charging piles

The day-ahead and real-time congestion scheduling method for distribution network with multiple access to electric vehicle charging piles is studied to effectively solve the day-ahead and real-time congestion scheduling problem of distribution network. The charge adjustment strategy of charge and discharge service fee is established to realize the double response regulation between the distribution system's scheduling organization and the charging pile operator; considering the adjustment strategy of charging service fee, a day-ahead congestion scheduling model is established with the goal of minimizing the charging cost of electric vehicles; based on the day-ahead congestion scheduling, a real-time congestion scheduling model is established to minimize the regional power fluctuation; the day-ahead and real-time congestion scheduling model is solved by differential evolution algorithm, and the optimal scheduling scheme is obtained. Experiments show that this method can reduce the line load rate of distribution network, avoid re-congestion, reduce the congestion scheduling cost and improve the security and economy of power grid operation.