期刊
IEEE TRANSACTIONS ON SMART GRID
卷 8, 期 1, 页码 149-157出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TSG.2015.2472597
关键词
Charging schedule; electric vehicle (EV); robust optimization (RO); state-of-charge (SoC) curve
In this paper, we address the problem of optimal electric vehicle (EV) charging in an unregulated electricity market. This problem is known to be highly nonlinear even in the case of fixed electricity prices due to a nonlinear state-of-charge curve representing physical battery limitations. We design tractable formulations for single and multiple EV charging frameworks. In the first part of this paper, we develop a new efficient cutting plane method, that can be used for solving charging optimization problem for both scenarios of known and uncertain electricity prices. The latter scenario with real-time electricity rates is considered in the second part of this paper. We obtain robust optimization counterparts of the nominal charging problems that are particularly important from an economic perspective when budget constraints are strictly enforced. New robust formulations are proven to be tractable. Moreover, computational experiments illustrate that a decision maker can find solutions that are close to optimal in terms of the corresponding objective values, and robust with respect to uncertain electricity prices.
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