Coordinated Charging of Electric Vehicles for Congestion Prevention in the Distribution Grid

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    Distributed energy resources (DERs), like electric vehicles (EVs), can offer valuable services to power systems, such as enabling renewable energy to the electricity producer and providing ancillary services to the system operator. However, these new DERs may challenge the distribution grid due to insufficient capacity in peak hours. This paper aims to coordinate the valuable services and operation constraints of three actors: the EV owner, the Fleet operator (FO) and the Distribution system operator (DSO), considering the individual EV owner’s driving requirement, the charging cost of EV and thermal limits of cables and transformers in a distribution grid capacity market framework. Firstly, a theoretical market framework is described. Within this framework, FOs who represent their customer’s (EV owners) interests will centrally guarantee the EV owners’ driving requirements and procure the energy for their vehicles with lower cost. The congestion problem will be solved by a coordination between DSO and FOs through a distribution grid capacity market scheme. Then, a mathematical formulation of the market scheme is presented. Further, some case studies are shown to illustrate the effectiveness of the proposed solutions.
    Original languageEnglish
    JournalIEEE Transactions on Smart Grid
    Issue number2
    Pages (from-to)703-711
    Publication statusPublished - 2014

    Bibliographical note

    This work is supported by the Danish iPower project


    • Congestion management
    • Distribution grid
    • Electric vehicles
    • Optimal charging schedule


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