A Multi-objective Optimal Orderly Charging Strategy for Electric Vehicles

摘要

In order to reduce the adverse effects of grid which is caused by massive unguided charging behavior of electric vehicles and maintain the safe and stable operation of the distribution network, an orderly charging strategy of electric vehicles is proposed in the paper, and the algorithm is based on improve differential evolution algorithm. The main idea of this strategy is to make charging plan through time-of-use (TOU) electricity price, and then electric vehicles can be moved to normal period and valley period for charging. The objective function of the algorithm is to minimize the charging cost of users and the peak-valley difference. Based on this strategy, the paper builds a mathematic model of multi-objective optimization, and improve differential evolution (IDE) algorithm is used to solve the model. In addition, the algorithm optimizes charging continuity,which can effectively prevent load curve mutation and protect charging facilities. The simulation results verify the effectiveness of the algorithm.