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

  • Liang Lu (Guest lecturer)

    Activity: Talks and presentations › Conference presentations

    Description

    This work 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.
    Period18 Oct 2019
    Event title18th 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
    Event typeWorkshop
    Conference number18
    LocationDublin, IrelandShow on map
    Degree of RecognitionInternational

    Keywords

    • grid-forming WT inverter
    • virtual synchronous machine (VSM) control
    • rotor angle stability
    • power angle small-signal stability (PAS)
    • eigenvalue trajectory

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