Abstract

The proliferation of plug-in electric vehicles (PEVs) has been significantly changing the power and transportation sector in recent times. However, uncoordinated charging of PEVs may overload the distribution lines i.e. congestion when the penetration of PEVs is reasonably high. In this paper, a charging coordination strategy is formulated considering grid to vehicle (G2V) and vehicle to grid (V2G) mode of operation for optimal integration of PEVs in industrial distribution system network. The charging strategy with an objective function of minimizing charging cost is developed to study the impact of PEV penetration in terms of technical and financial standpoint. The proposed strategy is implemented in workplace car park powered by grid or grid-connected photovoltaic generation located in industrial area of 38 bus radial distribution system. An analytical study is presented to evaluate the maximum possible PEV penetration that the distribution network can accommodate without violating the grid constraints. Moreover, the performance comparison of proposed strategy with or without the presence of solar powered car park is analyzed to assess the maximum possible PEVs penetration in the network so that no congestion occurs in the distribution lines. The present work is simulated and analyzed on IEEE 38 bus radial distribution network.

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