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Network Impacts and Cost Savings of Controlled EV Charging

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5 Author(s)
Remco A. Verzijlbergh ; Energy & Industry Group, Delft University of Technology, Delft, The Netherlands ; Marinus O. W. Grond ; Zofia Lukszo ; Johannes G. Slootweg
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This paper investigates the distribution system impacts of electric vehicle (EV) charging. The analysis is based on a large number of operational distribution networks in The Netherlands. Future load profiles have been constructed by adding different EV charging profiles to household loads and solving the power flows to assess the network impacts on various network levels. The results indicate that controlled charging of EVs leads to significant reduction of overloaded network components that have to be replaced, but the impact varies per network level. Overall, in the uncontrolled charging scenarios roughly two times more replacements are needed compared to the controlled charging scenario. Furthermore, it was shown that for the controlled charging scenario the overall reduction in net present value due to energy losses and the replacement of overloaded network components is approximately 20% in comparison with the uncontrolled charging scenario. The results suggest that the deployment of a flexible and intelligent distribution network is a cost-beneficial way to accommodate large penetrations of EVs.

Published in:

IEEE Transactions on Smart Grid  (Volume:3 ,  Issue: 3 )