Impact study of plug-in electric vehicles on electric power distribution system

This paper presents the impact study of plug-in electric vehicles (PHEVs) on a power distribution system and investigates how it would affect the distribution systems from different perspectives. PHEVs are modelled as storage energy systems in which its dispatch mode will follow the load shape patterns for charging behavior. The IEEE 37 test system with PHEVs is simulated in OpenDss, and a control algorithm is developed using the Matlab program. The study considers the impact of PHEVs on system voltage profile, power loss and line loading by taking into account low and high penetration level of PHEVs. An evaluation is also made on the diversification of charging behavior over a 24 hour period by considering the existing system load profile.