A Novel Strategy for Electric Vehicle Home Charging to Defer Investment on Distributed Energy Resources

Electric vehicles (EVs) pertain substantial potential to develop current transportation systems with low carbon impression. The integration of a large number of EVs will impose challenges to distribution system operations owing to a significant increase in peak demand on account of home charging. This necessitates the integration of capital-intensive distributed energy resources (DERs). This paper proposes a suitable strategy for EV home charging (EHC) to relieve stressed operating conditions of distribution systems in order to defer investment in DERs. The strategy employs an EV Energy Management System (EEMS) that coordinates home EV charging with real-time pricing (RTP) of electricity. More realistic scenarios are created by the normal distribution of arrival times of EVs, initial state of charge (SOC) levels, and capacities of EV batteries. The simulation results on the standard 33-bus distribution system reveal that the proposed strategy curtails increased peak demand, improves node voltage profile, reduces power losses, and provides financial gains to EV owners.