Active and Reactive Power Management of EVs in Reconfigurable Distribution System

Increasing penetration of electric vehicles (EVs) in distribution system may result in increased losses and voltage drop in distribution system due to their charging load. However, EVs can also act as mobile energy and power resource to the grid. The concept is known as vehicle to grid (V2G) operation of EVs. EVs can dispatch real and reactive power to the grid through V2G provision to support the operation of distribution system. In this study, scheduling strategy of EVs is implemented considering real power dispatch and reactive power dispatch from the EVs. In addition, distribution system reconfiguration (DFR) is utilized to optimally coordinate the V2G provision available from EVs. The proposed optimization is solved using Grey wolf optimization (GWO). Constructive influence of DFR is evaluated on 69-bus radial distribution system with different cases. It is shown that DFR plays a significant role in enhancing the operation of distribution system integrated with EVs.