Thevenin Equivalent Method for Dynamic Contingency Assessment

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    Abstract

    A method that exploits Thevenin equivalent representation for obtaining post-contingency steady-state nodal voltages is integrated with a method of detecting post-contingency aperiodic small-signal instability. The task of integrating stability assessment with contingency assessment is challenged by the cases of unstable post-contingency conditions. For unstable postcontingency conditions there exists no credible steady-state which can be used for basis of a stability assessment. This paper demonstrates how Thevenin Equivalent methods can be applied in algebraic representation of such bifurcation points which may be used in assessment of post-contingency aperiodic small-signal stability. The assessment method is introduced with a numeric example.
    Original languageEnglish
    Title of host publicationProceedings of IEEE Power & Energy Society's General Meeting 2015
    Number of pages5
    PublisherIEEE
    Publication date2015
    ISBN (Print)978-1-4673-8040-9
    DOIs
    Publication statusPublished - 2015
    Event2015 IEEE Power & Energy Society General Meeting - Denver, United States
    Duration: 26 Jul 201530 Jul 2015
    https://ieeexplore.ieee.org/xpl/conhome/7271236/proceeding

    Conference

    Conference2015 IEEE Power & Energy Society General Meeting
    Country/TerritoryUnited States
    CityDenver
    Period26/07/201530/07/2015
    Internet address

    Keywords

    • Power system analysis computing
    • Power system stability
    • Thevenin equivalent
    • Algorithms

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