Electric vehicles could potentially provide valued services to the power grid when not being driven, reducing ownership costs. This project evaluated the feasibility and practicality of vehicles providing a grid ancillary service called regulation. Regulation is especially well suited to battery electric vehicles; it involves fast-response changes in power above and below a baseline. With the baseline set at zero power, the power fluctuations above and below zero average out to approximately zero net energy over time. Hence, a vehicle's battery state of charge would vary in the short term, but would not become discharged over time. A test vehicle was fitted with a bidirectional grid power interface and wireless internet connectivity, allowing power flow to or from the vehicle to be dispatched remotely. An 'aggregator' function was developed to represent a commercial middleman between a grid operator and multiple vehicles. Power dispatch commands were sent wirelessly to the vehicle at 4-second intervals, and the vehicle response was monitored and recorded.


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    Title :

    Vehicle-to-Grid Demonstration Project: Grid Regulation Ancillary Service with a Battery Electric Vehicle


    Contributors:

    Publication date :

    2002


    Size :

    70 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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