Research on Online Evaluation and Optimization of Power Supply Reliability Considering Electric Vehicle Based Virtual Energy Storages

Electric vehicle is one of the important ways to achieve the goal of “dual carbon”. The disorderly charging behavior of EV has strong randomness in time and space, and its charging load will change the variation trend of daily load, which will affect the reliability of distribution network. This paper first analyzes the influence of EV on the reliability, and puts forward a reliability evaluation model of distribution network considering EV. Then, an online evaluation method of distribution network reliability based on real-time data is proposed from the two aspects of real-time operating status and reliability online evaluation efficiency. The power supply reliability index is obtained by loop search method based on load point, and finally verified by simulation.