Indices System of Charging Safety for Electric Vehicles

With the rapid increase of electric vehicles in China, the issue of electric vehicle charging safety becomes a significant problem. In order to evaluate the degree of EV charging safety, it takes the power grid, EV charging facilities and EV power batteries as a whole. And all the factors that affects EV charging safety are taken into account comprehensively to build an EV charging safety evaluation index system. Besides, the subjective weight and objective weight of each index are calculated respectively based on the analytic hierarchy process and entropy weight method. After that, The evaluation and classification of EV charging safety are carried out based on grey relational degree analysis and finally the calculation example verifies the feasibility of evaluating EV charging safety based on the established index system.