Impact of EV charging on LV networks

Lim , Chen Chuan (2014) Impact of EV charging on LV networks. Project Report. UTeM. (Submitted)

Text IMPACT OF EV CHARGING ON LV NETWORKS 24pages.pdf Download (440kB)

Abstract

Global pollution is increasing tremendously which will affect human life. Electric Vehicle (EV) is one of the methods which can reduce pollution. EV does not consume fuel directly for propulsion, but charging battery for power supplying. Charging EV by connecting through power grid will cause some problems. Those problems such as voltage drop and cable overheat will bring some impacts to residential. A residential area may face power shortage when exceeding EVs are charging simultaneously. All related problems had been found and studied by some countries. This project will focus on EV charging impact towards residential LV distribution network. Those EV was considered to be charged using same supply with house load. Simulations were carried out for studying those impacts. Five simulation cases had been carried out for investigating parameters such as voltage drop, thermal limit, transformer limit and energy losses. Some prerequisite studies had been done related to the existing grid features and EV characteristic. Five levels of EV penetration, 20%, 40%, 60%, 80% and 100% were done for simulation and obtained a series of data. The method proposed to alleviate the impact of EV charging on distribution grid was controlled charging method. The simulation involving the method had been carried out as one of five cases. All data obtained was processed and analyzed.

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