Power Angle Small-Signal Stability Analysis of Grid-Forming Wind Turbine Inverter Based on VSM Control

Liang Lu, Ömer Göksu, Nicolaos Antonio Cutululis

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    Abstract

    This paper introduces a virtual synchronous machine (VSM) control scheme which is based on a minimized emulation of the model of a synchronous generator (SG) for a grid-forming wind turbine (WT) inverter. Based on this VSM control scheme, state-space representation and block diagram of the small-signal model for the VSM-controlled grid-forming inverter connected to an infinite bus are derived, which are used for small-signal stability analysis of the power angle in the VSM control scheme. This power angle small-signal stability (PAS) analysis is proposed as a simpler way for analyzing the influence on the rotor angle stability of power system from large share of VSM-controlled grid-forming inverters. Influence of parameters in the power loop of the control scheme on the PAS is investigated by analyzing the eigenvalue trajectories of the state matrix.
    Original languageEnglish
    Title of host publicationProceedings of the 18th wind integration workshop : International workshop on large-scale integration of wind power into power systems as well as on transmission networks for offshore wind power plants
    Number of pages7
    Publication date2019
    DOIs
    Publication statusPublished - 2019
    Event18th Wind Integration Workshop: International workshop on large-scale integration of wind power into power systems as well as on transmission networks for offshore wind power plants - Crowne Plaza Dublin Airport, Dublin, Ireland
    Duration: 16 Oct 201918 Oct 2019
    Conference number: 18
    http://windintegrationworkshop.org/

    Workshop

    Workshop18th Wind Integration Workshop
    Number18
    LocationCrowne Plaza Dublin Airport
    Country/TerritoryIreland
    CityDublin
    Period16/10/201918/10/2019
    Internet address

    Keywords

    • Grid-formin WT inverter
    • Virtual synchronous machine (VSM) control
    • Rotor angle stability
    • Power angle small-signal stability (PAS)
    • Eigenvalue trajectory

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