Considering wind speed variability in real-time voltage stability assessment using Thévenin equivalent methods

Angel Perez, Bahtiyar Can Karatas, Hjörtur Jóhannsson, Jacob Østergaard

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    Abstract

    In this paper, wind speed models are used to consider its variability in real-time voltage stability assessment using Thévenin equivalent methods. A stochastic differential equation was used to produce a set of wind speeds required for the simulation scenarios together with a very short-term forecast based on a probabilistic method, which provides the means for including anticipation in the stability assessment. This is achieved by representing the variation in the wind as an uncertainty in the Thévenin equivalent parameters, which are used for wide-area assessment, and studying corresponding changes in the stability boundary for a specific time horizon. The methodology was tested with time domain simulation a cigré benchmark system for network integrations of renewables, where the approach successfully represented the final Thévenin Equivalent parameters with a maximum error of 2.5% of the estimated variables, for a time horizon of 1 minute in the used forecast.
    Original languageEnglish
    Title of host publicationProceedings of 2017 IEEE Manchester PowerTech
    Number of pages6
    PublisherIEEE
    Publication date2017
    ISBN (Electronic)978-1-5090-4237-1
    DOIs
    Publication statusPublished - 2017
    Event12th IEEE Power and Energy Society PowerTech Conference: Towards and Beyond Sustainable Energy Systems - University Place, University of Manchester., Manchester, United Kingdom
    Duration: 18 Jun 201722 Jun 2017

    Conference

    Conference12th IEEE Power and Energy Society PowerTech Conference
    LocationUniversity Place, University of Manchester.
    Country/TerritoryUnited Kingdom
    CityManchester
    Period18/06/201722/06/2017

    Keywords

    • Voltage stability
    • Real-time
    • Uncertainty
    • Stability limit
    • Wind speed
    • Wide-Area

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