Power System Stabilizers Design for Interconnected Power Systems

Gurrala, Gurunath and Sen, Indraneel (2010) Power System Stabilizers Design for Interconnected Power Systems. In: IEEE Transactions on Power Systems, 25 (2). pp. 1042-1051.

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Abstract

This paper proposes a method of designing fixed parameter decentralized power system stabilizers (PSS) for interconnected multi-machine power systems. Conventional design technique using a single machine infinite bus approximation involves the frequency response estimation called the GEP(s) between the AVR input and the resultant electrical torque. This requires the knowledge of equivalent external reactance and infinite bus voltage or their estimated values at each machine. Other design techniques using P-Vr characteristics or residues are based on complete system information. In the proposed method, information available at the high voltage bus of the step-up transformer is used to set up a modified Heffron-Phillip's model. With this model it is possible to decide the structure of the PSS compensator and tune its parameters at each machine in the multi-machine environment, using only those signals that are available at the generating station. The efficacy of the proposed design technique has been evaluated on three of the most widely used test systems. The simulation results have shown that the performance of the proposed stabilizer is comparable to that which could be obtained by conventional design but without the need for the estimation and computation of external system parameters.

Item Type:	Journal Article
Publication:	IEEE Transactions on Power Systems
Publisher:	IEEE
Additional Information:	Copyright 2010 IEEE. Personal use of this material is permitted.However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords:	Power system stabilizer; small-signal stability
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	27 Dec 2010 07:39
Last Modified:	27 Dec 2010 07:39
URI:	http://eprints.iisc.ac.in/id/eprint/34608

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