Stabiliser Fault Emergency Control using Reconfiguration to Preserve Power System Stability

Andreas Søndergaard Pedersen, Jan H. Richter, Mojtaba Tabatabaeipour, Hjörtur Jóhannsson, Mogens Blanke

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    Abstract

    Stabiliser faults in multi-machine power systems are examined in this paper where fault-masking and system reconguration of the nonlinear system is obtained using a virtual actuator approach. Phasor Measurement Units, which can be integrated in wide-area transmission grids to improve the performance of power system stabilisers, are utilised when reconguring remaining stabilisers after one has been inoperable by a local failure. A stabilitypreserving reconguration is designed using absolute stability results for Lure type systems: The calculation of the virtual actuator that relies on a solution of a linear matrix inequality (LMI) is detailed in the paper. Simulation results of a benchmark transmission system show the ability of the fault-tolerant reconguration strategy to maintain wide-area stability of a power system despite failure in a stabiliser.
    Original languageEnglish
    Title of host publicationProceedings of the 19th IFAC World Congress
    Number of pages7
    PublisherInternational Federation of Automatic Control
    Publication date2014
    ISBN (Print)978-3-902823-62-5
    Publication statusPublished - 2014
    Event19th World Congress of the International Federation of Automatic Control (IFAC 2014) - Cape Town, South Africa
    Duration: 24 Aug 201429 Aug 2014
    http://www.ifac2014.org/

    Conference

    Conference19th World Congress of the International Federation of Automatic Control (IFAC 2014)
    Country/TerritorySouth Africa
    CityCape Town
    Period24/08/201429/08/2014
    OtherThe theme of the congress: “Promoting automatic control for the benefit of humankind”
    Internet address
    SeriesI F A C Workshop Series
    Number1
    Volume19
    ISSN1474-6670

    Keywords

    • Power-system stabilisers
    • Fault-tolerant systems
    • System failure and recovery
    • Absolute stability

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