Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2013.2891.2896GongXinTao LinBinghua Su1220131315A large population of Electric Vehicles (EVs) will have a
significant impact on the power grid if the charging of EVs is left uncontrolled.
It is necessary to design optimal charging approach for Evs. In this study,
we propose two optimal approaches for EV charging. They are congestion game-based
centralized optimal approach and learning theory of game-based decentralized
optimal approach. The objective of two approaches is to minimize the charging
cost of each EV and meanwhile to flatten the total load profile. Under the approach
based on congestion game, the problem of EV charging is described as a congestion
game which solves the problem of EV acceptance that other centralized approaches
have. Howerver, when there are high penetration of EVs, this approach requires
significant computational capability. To develop a more practical approach,
we propose the approach based on learning theory of game, where the optimized
charging strategies are made locally and directly by EVs through learning in
a repeated process. With the IEEE 33-bus case as the test system, results show
that both approaches can flatten the total load profile, optimize power losses
and improve voltage regulation effectively compared with the uncoordinated scenario.]]>Boyd, S. and L. Vandenberghe,2004Clement-Nyns, K., E. Haesen and J. Driesen,2010Deilami, S., A.S. Masoum, P.S. Moses and M.A.S. Masoum,2011Gan, L.W., U. Topcu and S. Low,2011Fernandez, L.P., T.G.S. Roman, R. Cossent, C.M. Domingo and P. Frias,2011Moura, S.J., H.K. Fathy, D.S. Callaway and J.L. Stein,2011Mitra, P. and G.K. Venayagamoorthy,2010Ma, Z.D., D. Callaway and I. Hiskens,2010Vaya, M.G. and G. Andersson,2012Monderer, D. and L.S. Shapley,1996Qian, K.J., C.K. Zhou, M. Allan and Y. Yue,2011Richardson, P., D. Flynn and A. Keane,2012Sortomme, E., M.M. Hindi, S.D.J. MacPherson and S.S. Venkata,2011Zhao, J.H., F.S. Wen, Z.Y. Dong, Y.S. Xue and K.P. Wong,2012