Design and implementation of electric vehicle charging load integrated test system

With the growth of EV number, large scale penetration of EV load may bring problems to the LV distribution network, such as voltage sags, transformer overload, circuit overload and etc. It has become a hotspot in related fields to study the impact that EV implementation will bring to the LV distribution network. In this paper, a set of EV charging load integration test system was designed and developed to deal with the shortcomings of the existing study means. The system can simulate charging load of various types of vehicles, and versatile set of convenience, security and scalability in one. With this system we carried out some studies of EV charging load characteristic modeling, including the establishment of the models of battery of EV and the charging static load of EV, which will be helpful to the researchers of EV in some degree.