Uncertainty in real-time voltage stability assessment methods based on Thevenin equivalent due to PMU’s accuracy

Angel Perez, Jakob Glarbo Møller, Hjörtur Jóhannsson, Jacob Østergaard

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

    Abstract

    This article studies the influence of PMU’s accuracy in voltage stability assessment, considering the specific case of Th ́ evenin equivalent based methods that include wide-area information in its calculations. The objective was achieved by producing a set of synthesized PMU measurements from a time domain simulation and using the Monte Carlo method to reflect the accuracy for the PMUs. This is given by the maximum value for the Total Vector Error defined in the IEEE standard C37.118. Those measurements allowed to estimate the distribution pa- rameters (mean and standard deviation) of the studied voltage stability indices and grid transformation coefficients which have applications in voltage stability assessment. The obtained distri- butions have a direct impact in the number of samples needed for estimating system parameters and compromise between time- scale and uncertainty in those estimations is shown.
    Original languageEnglish
    Title of host publicationProceedings of 5th IEEE PES Innovative Smart Grid Technologies
    Number of pages6
    PublisherIEEE
    Publication date2014
    DOIs
    Publication statusPublished - 2014
    Event2014 IEEE PES Innovative Smart Grid Technologies Conference, Europe - Istanbul Technical University, Istanbul, Turkey
    Duration: 12 Oct 201415 Oct 2014
    Conference number: 5
    https://ieeexplore.ieee.org/xpl/conhome/7001799/proceeding

    Conference

    Conference2014 IEEE PES Innovative Smart Grid Technologies Conference, Europe
    Number5
    LocationIstanbul Technical University
    Country/TerritoryTurkey
    CityIstanbul
    Period12/10/201415/10/2014
    Internet address

    Keywords

    • Voltage stability
    • Long term dynamics
    • Synchronized phasor measurements
    • Wide area monitoring
    • Voltage stability margin
    • Total vector error

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