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.
Vehicle-to-Grid Demonstration Project: Grid Regulation Ancillary Service with a Battery Electric Vehicle
2002
70 pages
Report
No indication
English
Road Transportation , Transportation , Transportation & Traffic Planning , Electric vehicles , Power grids , Electric batteries , Materials , Methods , Recommendations , Deployment , Feasibility studies , Efficiency , Grid regulations , Battery electric vehicles , Vehicle-to-grid , Grid ancillary services , Grid operators
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