A detailed analysis of the effective-load-carrying-capacity behavior of plug-in electric vehicles in the power grid

Soumyo V. Chakraborty, Sandeep K. Shukla, James S. Thorp

Abstract: We performed a study of plug-in electric vehicle (PEV) vehicle-to-grid (V2G) operations to characterize the behavior of effective load carrying capacity (ELCC) contributed by the PEVs. We leveraged the V2G simulation framework developed and used wider data sets in this study to perform a broader and deeper analysis. Key steps undertaken were: (1) Compute grid reliability for a wide range of PEV fleet sizes. (2) Identify optimal numbers of PEV fleet sizes for different levels of V2G ELCC. (3) Run stress tests with high levels of PEV penetration and expected V2G ELCC to identify boundaries of safe operations. We observed that, for New York City, up to 10% of peaking capacity can be safely contributed by the PEVs at PEV penetration levels around 50% representing an economic benefit of SllOMM per year. PEV charging safety is not found to be an issue for up to about 87.5% penetration.