Impact of saturation nonlinearities/disturbances on the small-signal stability of power systems: An analytical approach

    Authors

    H. Xin; D. Gan; Z. Qu;J. Qiu

    Comments

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    Abbreviated Journal Title

    Electr. Power Syst. Res.

    Keywords

    saturated systems; power system stabilizer (PSS); multi-objective; optimization; practical stability region; golden section search (GSS); method; iterative algorithm; ACTUATOR SATURATION; DESIGN; PSS; PARAMETERS; SUBJECT; Engineering, Electrical & Electronic

    Abstract

    In this paper, a multi-objective optimization model is presented to estimate the practical stability region and maximum endurable disturbance rejection for a small-signal power system dynamic model with saturation nonlinearities and disturbance rejection. Iterative algorithms are developed to solve for Pareto optimized solutions (POS) of this optimization. Furthermore, as an application of this approach to power systems, a method to analyze the impact of saturation nonlinearities and disturbance rejection on power system small-signal stability is introduced based on the estimated stability region and maximum endurable disturbance rejection. Numerical results of a test power system with detailed saturated PSS controllers are described, indicating the reliability and simplicity of the method. (c) 2007 Elsevier B.V. All rights reserved.

    Journal Title

    Electric Power Systems Research

    Volume

    78

    Issue/Number

    5

    Publication Date

    1-1-2008

    Document Type

    Article

    Language

    English

    First Page

    849

    Last Page

    860

    WOS Identifier

    WOS:000254816600009

    ISSN

    0378-7796

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