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Electric Vehicles and the Vehicle-to-Grid Technology

Electric vehicles(EVs) potentially provide some valued services to the power grid. In this paper, a review of the history, the concept, the types of EVs are discussed. Meanwhile, as EVs moves to electric drive, an opportunity opens for “vehicle-to-grid” (V2G). V2G describes a system in which battery EVs, plug-in hybrid EVs or fuel cell Evs communicate with the power grid to provide peak power, spinning reserves or regulation services. In addition, it can provide renewable energy storage and backup in the future. So the functions, the scheme , the transition path and the foreground of V2G are introduced.