NDLI: Polynomial approximation of the damping-ratio-based small-signal security region boundaries of power systems

Content Provider	IEEE Xplore Digital Library
Author	Su Yang Feng Liu De Zhang Shengwei Mei Guangyu He
Copyright Year	2011
Description	Author affiliation: State Key Lab of Power Systems, Dept. of Electrical Engineering, Tsinghua University Beijing 100084, P.R. China (Su Yang; Feng Liu; De Zhang; Shengwei Mei; Guangyu He)
Abstract	The small-signal security region (SSSR) is an important concept in the security analysis of power systems, especially for the problems of low-frequency oscillation. In this paper, a polynomial approximation method is proposed to construct an analytical expression of the boundaries of the damping-ratio-based small-signal security region (D-SSSR) by using the implicit function approach. Compared with the conventional small-signal security region based on the Hopf bifurcation, our method is more practical and suitable for the dispatching of power systems, since it directly depicts the weak damped boundaries in the high-dimensional parameter space. The formulations of the linear and quadratic approximation are presented in detail. The effectiveness and accuracy of the algorithm is verified through case studies on a rudimentary power system.
Starting Page	1
Ending Page	8
File Size	1450685
Page Count	8
File Format	PDF
ISBN	9781457710001
ISSN	19449925
e-ISBN	9781457710025
e-ISBN	9781457710018
DOI	10.1109/PES.2011.6039294
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Linear approximation Power system stability Mathematical model Damping Eigenvalues and eigenfunctions Polynomials polynomial approximation small signal stability power system damping
Content Type	Text
Resource Type	Article

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