Effect of V2G Technology Integration on MV Distribution Grids

The study is set in the context of the integration of Electric Vehicles (EVs) into distribution grids. In particular, the proposed work aims at analyzing the effects of V2G technology integration on a medium voltage (MV) distribution grid. By means of proper performance indicators, the study investigates and compares the effect on the MV grid operating condition due to the integration of EV Charging Stations (CS) in three configurations. Assuming a non-aggregated presence of EV users in the grid, the following cases are considered: i) EV uncontrolled charge; ii) EV controlled charge; iii) controlled V2G. Simulation results show that V2G integration strategy is the best for grid operation, in terms of total daily energy, active power losses reduction, and load demand reduction during the most critical hours of the day.