Harmonic Distortion in Distribution System Due to Single-Phase Electric Vehicle Charging

Abstract

An undesirable jack-up of uneven EV charging load is feared to arouse various technical issues in the existing illsuited power system. In this wake, assessment of total harmonic distortion (THD) in low voltage distribution network is considered of prime significance in order to better revamp the system. This paper deals with assessment of voltage THD appeared due to single-phase EV charging in an urban and rural distribution networks. This paper focuses on evaluation of total harmonic distortion caused by electric vehicle charging in a low voltage residential distribution system. The sample test network is based on the test-bench CIGRE low-voltage distribution system. Simulations are conducted to compute voltage THD with different current harmonic spectrum. The obtained results suggest a permissible diffusion of EVs that may be supported by the power system without the concern of harmonic contamination.