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Charging Coordination of Plug-In Electric Vehicle for Congestion Management in Distribution System

Abstract In modern electricity market, high penetration of Plug-In Electric Vehicle (PEV) creates a huge burden on distribution system operator (DSO). This high penetration creates a gap between demand-supply which further leads to the congestion in distribution lines. Power flow in a grid connected PEV is bidirectional i. e. it can work either in Grid to Vehicle (G2V) or Vehicle to grid (V2G) mode depending upon the grid constraints and owners demand. This paper proposes a charging coordination strategy of PEVs to alleviate congestion in distribution lines. Firstly, Active Power Flow Sensitivity Factors (PFSFs) are calculated to predict the branch flows or congestion status due to the uncoordinated charging of PEVs. Secondly, a coordination strategy of PEVs charging-discharging is made using different heuristic based algorithms in order to mitigate congestion in radial distribution system. The result of proposed work also shows the reduction in total active power loss while maintaining the electricity grid constraints. The present work is simulated and analyzed on IEEE 10 bus radial distribution system integrated with residential systems. Several case studies are analyzed to demonstrate the heftiness of the proposed work.