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A QFT-based robust SVC controller for improving the dynamic stability of power systems

Rao, Shrikant P and Sen, Indraneel (1998) A QFT-based robust SVC controller for improving the dynamic stability of power systems. In: Electric Power Systems Research, 46 (3). pp. 213-219.

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Official URL: http://dx.doi.org/10.1016/S0378-7796(98)00011-X


A new design technique for an SVC-based power system damping controller has been proposed. The controller attempts to place all plant poles within a specified region on the s-plane to guarantee the desired closed loop performance. The use of Horowitz's quantitative feedback theory (QFT) permits the design of a 'fixed gain controller' that maintains its performance in spite of large variations in the plant parameters during its normal course of operation. The required controller parameters are arrived at by solving an optimization problem that incorporates the control specifications. The performance of this robust controller has been evaluated on a single machine infinite bus system equipped with a mid point SVC, and the results are shown to be consistent with the expected performance of the stabilizer. (C) 1998 Elsevier Science S.A. All rights reserved.

Item Type: Journal Article
Publication: Electric Power Systems Research
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Horowitz's quantitative feedback theory;Dynamic stability; SVC-based controller.
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 10 Jun 2011 04:21
Last Modified: 10 Jun 2011 04:21
URI: http://eprints.iisc.ac.in/id/eprint/38072

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