Abstract
With the increasing popularity of plug-in hybrid electric vehicles (PHEVs), coordinated charging and discharging of PHEVs has become an important issue in power distribution networks. To this end, we employ a multi-objective optimization model to formulate the problem of coordinated charging and discharging of PHEVs, in which the objectives of load shifting and total costs minimization are both investigated under system’s technical constraints. A hierarchical optimal algorithm combining the iterative water-filling-based algorithm and the consensus-based method is proposed to solve the multi-objective optimization problem. It shows that the proposed algorithm not only enhances stable performance for the power load but also guarantees low-cost satisfaction for the vehicle owners in the system-level power distribution network integrating physical power network with information network together. Numerical simulations are presented to demonstrate the effectiveness of the proposed algorithm.
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