A probabilistic evaluation method to voltage profile of distribution network considering the EV charging choice

The interactions between the transportation system and the distribution network become more and more close due to the electric vehicles charging in the fast charging stations which are considered as a new kind of public service infrastructure and a special power load. In this paper, a probabilistic evaluation method to voltage profile of distribution net work considering the electric vehicle charging choice is proposed. Firstly, a special-temporal distribution of the charging load of electric vehicles is determined considering the uncertainties of battery characteristics, travelling behaviors, and the charging choices. Then, the temporal distribution of the fast charging station load is determined. Finally, the voltage profile of distribution network is evaluated in the test case. What´s more, simulation results illustrate that the effect of various electric vehicle charging choices on the voltage profile, by comparison.