Super-Positioning of Voltage Sources for Fast Assessment of Wide-Area Thévenin Equivalents

Jakob Glarbo Møller, Hjörtur Jóhannsson, Jacob Østergaard

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    Abstract

    A method for superimposing voltage sources is sought optimized by using a sparse triangular solver and multiprocessing. A revision to the method is suggested which exploits Schur’s complement of the network admittance matrix and optimal re-use of computations. The algorithm is implemented and parallelized for shared memory multiprocessing. The proposed algorithm is tested on a collection of large test systems and performance is found to be significantly better than the reference method. The algorithm will thereby facilitate a speed-up of methods relying on Thévenin equivalent representation such as the Thévenin equivalent method for contingency assessment.
    Original languageEnglish
    Title of host publicationProceedings of the 2018 IEEE PES General Meeting
    PublisherIEEE
    Publication date2018
    ISBN (Print)9781538677032
    DOIs
    Publication statusPublished - 2018
    Event2018 IEEE Power & Energy Society General Meeting - Oregon Convention Center, Portland, United States
    Duration: 5 Aug 201810 Aug 2018
    https://ieeexplore.ieee.org/xpl/conhome/8540807/proceeding

    Conference

    Conference2018 IEEE Power & Energy Society General Meeting
    LocationOregon Convention Center
    Country/TerritoryUnited States
    CityPortland
    Period05/08/201810/08/2018
    Internet address

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