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  • Key factors affecting voltage oscillations of distribution networks with distributed generation and induction motor loads

    Author(s)
    Roy, NK
    Pota, HR
    Mahmud, MA
    Hossain, MJ
    Griffith University Author(s)
    Hossain, Jahangir
    Year published
    2013
    Metadata
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    Abstract
    The existence of critical voltage modes in distribution systems and the key factors responsible for them are presented in this paper. The analysis is carried out over a distribution test system for different types of induction motors. Eigenvalues and participation factors are used to investigate the modal interaction within the system. This study shows that load voltage dynamics significantly influence damping of the voltage modes. These modes have frequencies of oscillations between the electromechanical and subsynchronous oscillations of power systems. Significant parameters of the system which affect the damping and ...
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    The existence of critical voltage modes in distribution systems and the key factors responsible for them are presented in this paper. The analysis is carried out over a distribution test system for different types of induction motors. Eigenvalues and participation factors are used to investigate the modal interaction within the system. This study shows that load voltage dynamics significantly influence damping of the voltage modes. These modes have frequencies of oscillations between the electromechanical and subsynchronous oscillations of power systems. Significant parameters of the system which affect the damping and frequencies of the oscillations are identified to provide a clear understanding of the problem. A bifurcation study is performed to determine the dynamic loadability limit of the system. Time-domain simulations are carried out to verify the validity of the modal analysis and provide a physical feel for the types of oscillations that occur in distribution systems. The impact of various distribution network configurations on these modes is also demonstrated through nonlinear simulations.
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    Journal Title
    International Journal on Electrical Power and Energy Systems
    Volume
    53
    DOI
    https://doi.org/10.1016/j.ijepes.2013.05.013
    Subject
    Electrical energy generation (incl. renewables, excl. photovoltaics)
    Publication URI
    http://hdl.handle.net/10072/55436
    Collection
    • Journal articles

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