Estimating Electric Vehicle Hosting Capacity in Distribution Networks: A Scalable Approach

This paper presents an innovative and scalable approach for estimating the hosting capacity for Electric Vehicles(EVs) in distribution networks. Excessive EV penetration causes detrimental impacts such as voltage fluctuations, power loss, voltage unbalance, and thermal overloading. Determining EV hosting is essential to maintain technical and operational constraints within statutory limits. This research considers multiple performance constraints with a streamlined approach for assessing EV hosting capacity in distribution networks. The result shows voltage fluctuation dominates over other indexes in all scenarios for the standard test network, whereas voltage unbalances dominate during minimum load scenarios for real distribution feeders. The proposed approach can help network operators to estimate EV hosting capacity in distribution networks, enabling efficient planning and optimization of charging infrastructure while ensuring reliable and secure grid operation.