Binary Search and Fit Algorithm for Improved Voltage Stability Boundary Monitoring

Christina Hildebrandt Luthje Jørgensen, Bahtiyar Can Karatas, Hjörtur Jóhannsson, Stefan Sommer

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

    Abstract

    This paper introduces a binary search algorithm using second order polynomial fitting to efficiently determine the maximum power transfer to a non-controlled load when accounting for variations in Thévenin voltage magnitude due to non-linearity. This is used for voltage stability boundary monitoring of a power system in real time. The binary search with polynomial fitting (BSPF) is compared to a reference algorithm, which sweeps over different load levels, and a binary search and is shown to improve both runtime and accuracy of results. The assessment method can take advantage of parallelization, which together with the BSPF algorithm makes it possible to determine a margin for each of the 2.000 non-controlled loads in a 3.000 bus test system in less than 6 seconds. This enables early detection of voltage instability in highly dynamic future smart grid based power systems.

    Original languageEnglish
    Title of host publicationProceedings of 2019 IEEE PES Innovative Smart Grid Technologies Europe, ISGT-Europe 2019
    Number of pages5
    PublisherIEEE
    Publication date1 Sept 2019
    Article number8905466
    ISBN (Electronic)9781538682180
    DOIs
    Publication statusPublished - 1 Sept 2019
    Event2019 IEEE PES Innovative Smart Grid Technologies Europe - Universitatea Politehnica din București, Bucharest, Romania
    Duration: 29 Sept 20192 Oct 2019
    Conference number: 8
    http://sites.ieee.org/isgt-europe-2019/
    https://ieeexplore.ieee.org/xpl/conhome/8892271/proceeding

    Conference

    Conference2019 IEEE PES Innovative Smart Grid Technologies Europe
    Number8
    LocationUniversitatea Politehnica din București
    Country/TerritoryRomania
    CityBucharest
    Period29/09/201902/10/2019
    Internet address
    SeriesProceedings of 2019 IEEE PES Innovative Smart Grid Technologies Europe, ISGT-Europe 2019

    Keywords

    • Power system analysis computing
    • Power system stability
    • Real-time assessment
    • Thévenin equivalent

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