Safety Risk Evaluation Method for Charging Piles Considering the Impact of Electric Vehicle Access to the Grid

Aiming at the electric vehicle charging pile not only has an impact on the safe, stable and economic operation of the power grid, but also has its own safety risk problems, this paper systematically combs through the safety risk situation of electric vehicle charging piles and puts forward the risk factors, especially focusing on the consideration of the electric vehicle access to the power grid impact; puts forward a comprehensive evaluation index system of electric vehicle charging piles’ safety risk; at the same time, further, adopts the stochastic combination method of the assignment method to evaluate the safety risk of the electric vehicle charging system. Meanwhile, further, the randomized combination method assignment method is used to evaluate the safety risk of electric vehicle charging system, which improves the objectivity of the evaluation results. Simulation results show that based on the evaluation system and evaluation method in this paper, the comprehensive evaluation of the safety risk of electric vehicle charging pile can be realized, which especially reduces its impact on the power grid and ensures the safe, stable and economic operation of the power grid.