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

Jakob Glarbo Møller, Hjörtur Jóhannsson, Jacob Østergaard

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    386 Downloads (Pure)


    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
    Publication date2018
    ISBN (Print)9781538677032
    Publication statusPublished - 2018
    Event2018 IEEE Power & Energy Society General Meeting - Oregon Convention Center, Portland, United States
    Duration: 5 Aug 201810 Aug 2018


    Conference2018 IEEE Power & Energy Society General Meeting
    LocationOregon Convention Center
    Country/TerritoryUnited States
    Internet address


    Dive into the research topics of 'Super-Positioning of Voltage Sources for Fast Assessment of Wide-Area Thévenin Equivalents'. Together they form a unique fingerprint.

    Cite this