With the increasing integration scale of electric vehicles, their impact on the operation and control of the power system cannot be ignored. As a controllable load, the charging and discharging control of electric vehicles can effectively weaken the adverse effects brought by the charging load, and can also play a role of peak-shaving and valley-filling, and promote the consumption of new energy, which will become an important means of power system operation control. The factors to be considered in charging load modeling were firstly given, and the methods for establishing electric vehicle load forecasting models were summarized. Then, the feasible methods of electric vehicle participating in power grid dispatching were reviewed, and the characteristics of different methods were revealed. At the same time, in order to promote the willingness of electric vehicles to participate in dispatching, the architecture and methods of using blockchain to complete electric vehicle power trading were introduced. Finally, the unsolved problems and possible research directions were discussed.
