Abstract:With the popularity of electric vehicles, vehicle to grid (V2G) technology has become the key to achieving efficient use of energy and stable operation of the grid. This paper discusses the application of V2G technology in power grid load management, including peak cutting and valley filling and providing frequency/voltage regulation services. By analyzing the maximum discharge capacity of the lithium battery, the V2G system can provide auxiliary scheduling function during the peak load of the grid, and at the low load, through the two-way power exchange mechanism, the electric vehicle can be charged when the price is low and discharged when the price is high, thus achieving economic benefits. This paper further coupled the V2G vehicle network model with the market price, and carried out a detailed analysis of the potential benefits and costs of electric vehicles participating in grid services, which provided theoretical support for the commercialization of V2G technology and the sustainable development of power grids.