Technical assessment of dispersed electric vehicles in medium voltage distribution networks

A large scale integration of electric vehicles as battery storage devices could be a new alternative to reduce contrary effects on electricity grids by volatile power generation. Mobile storage systems provide fast-response assistance that can be called on a short notice (within ms) and are therefore well suited to counteract fault conditions. Hence, the overall result could be an increased stability and reliability of the electric grid. However, it is not yet fully understood which scale of widely dispersed storage devices could provide efficient ancillary services without stressing the grid or increasing the cost for upgrading of existing infrastructure.