Title

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

Authors

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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