Electric vehicle charging infrastructure assignment and power grid impacts assessment in Beijing

This paper estimates the charging demand of an early electric vehicle (EV) market in Beijing and proposes an assignment model to distribute charging infrastructure. It finds that each type of charging infrastructure has its limitation, and integration is needed to offer a reliable charging service. It also reveals that the service radius of fast charging stations directly influences the final distribution pattern and an infrastructure deployment strategy with short service radius for fast charging stations has relatively fewer disturbances on the power grid. Additionally, although the adoption of electric vehicles will cause an additional electrical load on the Beijing's power grid, this additional load can be accommodated by the current grid's capacity via the charging time management and the battery swap strategy.

Highlight
► Charging posts, fast charging stations, and battery swap stations should be integrated.
► Charging posts at home parking places will take a major role in a charging network.
► A service radius of 2 km is proposed for fast charging stations deployment.
► The additional charging load from EVs can be accommodated by charging time management.