Hosting Capacity of Electric Vehicles under Consideration of Grid Integration Measures

The current ramp-up of electric vehicles raises the question of how many vehicles can be integrated into today’s electrical distribution grids and how this can be accurately determined. Current methods do not take all relevant aspects into account, therefore we propose a method to determine the hosting capacity of electric vehicles in realistic distribution grids and to evaluate grid integration measures. A probabilistic approach is chosen in which the mobility requirements are precisely modelled in order to significantly increase the validity of the simulation. The results show that the hosting capacity is largely dependent on the charging power of the vehicles. For example, if all vehicles are charged with 3.7 kW, the analysed grid can supply around eight times more vehicles than with a charging capacity of 11 kW. However, every grid integration measure influences the mobility of the participating vehicles. Among the grid integration measures, balanced charging, in which the entire duration of the stay is used for charging, has established itself.