Distribution network capacity assessment: Variable DG and active networks

Luis F. Ochoa, Chris J. Dent, Gareth P. Harrison

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    Increasing connection of variable distributed generation, like wind power, to distribution networks requires new control strategies to provide greater flexibility and use of existing network assets. Active network management (ANM) will play a major role in this but there is a continuing need to demonstrate the benefit in facilitating connection of new generation without the need for traditional reinforcements. This paper proposes a multi-period AC optimal power flow (OPF)-based technique for evaluating the maximum capacity of new variable distributed generation able to be connected to a distribution network when ANM control strategies are in place. The ANM schemes embedded into the OPF include coordinated voltage control, adaptive power factor and energy curtailment. A generic U.K. medium voltage distribution network is analyzed using coincident demand and wind availability data derived from hourly time-series. Results clearly show that very high penetration levels of new variable generation capacity can be achieved by considering ANM strategies compared to the widely used passive operation (i.e., "fit and forget"). The effects on network losses are also discussed. © 2009 IEEE.
    Original languageEnglish
    Title of host publicationIEEE Transactions on Power Systems|IEEE Trans Power Syst
    Pages87-95
    Number of pages8
    Volume25
    DOIs
    Publication statusPublished - Feb 2010
    EventIEEE/PES General Meeting 2010 -
    Duration: 25 Jul 201029 Jul 2010

    Conference

    ConferenceIEEE/PES General Meeting 2010
    Period25/07/1029/07/10

    Keywords

    • Active network management
    • Distributed generation
    • Distribution networks
    • Optimal power flow
    • Wind power

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