With the popularization of electric vehicles, a large number of charging stations are connected to the distribution network. It is necessary to evaluate the impact of the charging process on the power quality of the distribution network, a comprehensive power quality assessment method for electric vehicle charging station is proposed in this paper. The appropriate power quality indicators are selected to establish an evaluation model according to the scenario characteristics of charging stations connected to the distribution network. For the unity of subjective and objective weighting, the analytic hierarchy process and the entropy weight method are used to comprehensively weight the power quality indicators, which not only meet the actual needs, but also reflect the objective information of the indicator data. The radar map evaluation method is applied to the power quality assessment, and the evaluation object is graphically analyzed to directly display the deterioration degree of the overall power quality and the deterioration process of each indicators in different periods. This method can provide decision support for power quality optimization scheme. The feasibility of the proposed method is verified by the analysis of simulation examples.
