Power quality and stability impacts of Vehicle to grid (V2G) connection

Abstract

Electric Vehicles (EV) are supplied with storage batteries, which are powered from the grid. So, the EV are considered as a load on the electrical network. But on the other hand, power can be recovered back to the grid in case of out use. This paper study the effect of V2G technology at substation 33kV/11kV located at Amman city, it takes the load profile for each feeder at the substation in to account, the substation and the out feeders build and tested using DIGSILENT software. The harmonic distortion that the charge controller produce it on the grid for eight scenarios at different hours for winter and summer semesters was analyzed, also the effect of V2G technology on the stability was found for fourteen scenarios at different penetration level for electric vehicles, at the end the effect of V2G technology on voltage stability was found for three cases. The results compared with IEEE standard for the allowable harmonic distortion limits where the highest total harmonic distortion occurs at summer peak and high penetration for electric vehicles which equal 0.37%, the frequency stability results compared by the NECA (National Electricity Code Agency).