Investigation of effects of increasing EV penetration on distribution transformers in Modi Ganpati Area, Pune

摘要

Electric vehicle (EV) charging loads expected to be geographically-clustered in residential areas than in in industrial or commercial space. This can drive the distribution system to be overloaded, even if the overall supply system may have surplus power and can fulfill the EV charging requirements. The EV charging has negative influence on the grid as it can affect secondary distribution transformer (DT) to be overloaded, especially during EV peak charging periods. In this paper, a model is developed to study the effect of EV on transformers' life considering real-life data of DTs from Modi Ganpati area, Pune. Energy required to charge is calculated considering random state-of-charge (SOC) of battery and charging time instants. Different EV penetration scenarios are considered to study the effect of EV on loss-of-life (LOL) of DT.