Assessment of Highway Fast-Charging Infrastructures Impact on the Italian Transmission Network

Electric mobility is more and more underpinned by energy policy decision and technological development of vehicles and chargers. Therefore, infrastructures for fast charging of electric vehicles on highways and motorways have to be properly planned to cope with electric vehicle diffusion and evolution, implying the assessment of their influence on the power system planning and operation. In this paper, a sequential procedure is proposed for determining the number and position of electric vehicle charging points on highway route branches and the possible aggregation modes for suitable connection schemes with the Italian transmission network. Simulations have been performed through N and N-1 load flow analyses considering steady-state conditions. The method is applied to the envisaged development of Italian highway network and high voltage transmission system.