Price based electric vehicle charging

It is expected that a lot of the new light vehicles in the future will be electrical vehicles (EV). The storage capacity of these EVs has the potential to complement renewable energy resources and mitigate its intermittency. However, EV charging may have negative impact on the power grid. This paper investigates the impact on a Danish distribution system when the EV charging aims to reduce the charging cost by charging at the cheapest hours. Results show that the charging based on the price signal only will have adverse effect on the grid. The paper also proposes an alternate EV charging method where distribution system operator (DSO) optimizes the cost of EV charging while taking substation transformer capacity into account.

[1]  G. Mauri,et al.  Recharging of EV in a typical Italian urban area: Evaluation of the hosting capacity , 2011, 2011 IEEE Trondheim PowerTech.

[2]  P. Fairley,et al.  Speed bumps ahead for electric-vehicle charging , 2010, IEEE Spectrum.

[3]  Birgitte Bak-Jensen,et al.  Integration of Vehicle-to-Grid in the Western Danish Power System , 2011, IEEE Transactions on Sustainable Energy.

[4]  E. Coyle,et al.  Harmonic distortion caused by EV battery chargers in the distribution systems network and its remedy , 2004, 39th International Universities Power Engineering Conference, 2004. UPEC 2004..

[5]  M. J. Hutzler,et al.  Emissions of greenhouse gases in the United States , 1995 .

[6]  Chresten Træholt,et al.  Driving Pattern Analysis for Electric Vehicle (EV) Grid Integration Study , 2010, 2010 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe).

[7]  Canbing Li,et al.  An Optimized EV Charging Model Considering TOU Price and SOC Curve , 2012, IEEE Transactions on Smart Grid.

[8]  Hongbin Sun,et al.  Study on wind-EV complementation in transmission grid side , 2011, 2011 IEEE Power and Energy Society General Meeting.

[9]  C. Camus,et al.  Impact of Plug-in Hybrid Electric Vehicles in the Portuguese electric utility system , 2009, 2009 International Conference on Power Engineering, Energy and Electrical Drives.

[10]  Milan Ilic,et al.  PV plant intermittency mitigation using constant DC voltage PV and EV battery storage , 2010, 2010 IEEE Conference on Innovative Technologies for an Efficient and Reliable Electricity Supply.

[11]  Praveen Kumar,et al.  Influence of EV on grid power quality and optimizing the charging schedule to mitigate voltage imbalance and reduce power loss , 2010, Proceedings of 14th International Power Electronics and Motion Control Conference EPE-PEMC 2010.

[12]  Deepak Divan,et al.  Flexible electric vehicle (EV) charging to meet renewable portfolio standard (RPS) mandates and minimize green house Gas emissions , 2010, 2010 IEEE Energy Conversion Congress and Exposition.