Effects of charging battery electric vehicles on local grid regarding standardized load profile in administration sector

Integration of battery electric vehicles (BEV) as load could have an impact on the stability of local grids. With the experiment conducted in a research project, real-time metering data of the charging points was collected, with which the charging process, user behavior and furthermore modeling of default pattern on a working-place charging station park are presented and further discussed in this paper. The simultaneity of load peak from uncontrolled charging processes and from the local load profile could cause local grid bottleneck. A BEV pool model to generate random charging sessions on a workday, which conforms the real behavior in this research case, is proposed. Charging strategies were developed and considered as centralized or decentralized. The simulation shows the influence of delay charging start time and demonstrate the potential of peak load reduction from charging of several BEV and furthermore of a large-scale construction of charging infrastructure.