Fast charging stations for electric vehicle: The impact on the mv distribution grids of the milan metropolitan area

Abstract

In the next 20 years the number of electric vehicles (EV) will exponentially increase and will reach 40 millions in EU. The energy required for charging EV, usually recovering in private parking places for many hours, will be mainly provided through smart charging boxes (“wall box”) managed by the (smart) grid control system of the LV network. In all other cases, EVs will be charged in fast charging stations or battery swap stations connected to the MV network. Such charging stations require high power during the day, especially when the network could be overloaded, hence there is the need to model and analyze the impact on the grid. This paper investigates the potential impact of fast charging stations on distribution MV grid and the use of storages to shave peak power demand and providing additional network services.