Integrating plug-in- electric vehicles with the distribution system

Accurate assessment of plug-in electric vehicle (PEVs) impacts on distribution system operation requires sufficient understanding and representation of PEV load variations such as daily load shape as well as network location. Traditional distribution system analysis methods cannot always address these variations and therefore not fully describe the PEV impacts on the system. EPRI has initiated a multi-year project to understand PEV system impacts with several utilities in the United States. The purpose is to identify, define, and calculate the impact to particular utility distribution system architectures considering total PEV penetration levels as well as localized concentrations. This paper provides a brief overview of the proposed process to evaluate distribution system response to PEV loading.