Load rates of low voltage transformers and medium voltage profile assessments on a real distribution electric grid based on average Daily Load Profile (DLP) of a housing for a high penetration of plug-in hybrid electric vehicles (PHEVs)

This paper assesses the impact of PHEVs on a real medium voltage distribution electric grid based on average Daily Loads Profiles (DLPs) of a PHEV and of a housing. For three penetration rates, we show the important effects on load rates of low voltage transformers which compose the studied urban substation. Nevertheless, we demonstrate the robustness of medium voltage electric grid for the high penetration of PHEVs because the ηV index proposed which assess the quality of the voltage supplied to low voltage transformers reached a minimum of 98.2%.