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Title:Modeling of power system dynamics in the medium time scale
Author(s):Varghese, Abraham
Doctoral Committee Chair(s):Sauer, Peter W.
Department / Program:Electrical and Computer Engineering
Discipline:Electrical Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Electronics and Electrical
Abstract:This thesis deals with the reduced-order modeling of electrical machines and interconnected power systems in the medium time scale using integral manifold techniques. First, an improved model for power system stabilizer design that captures the damping due to the amortisseur windings while retaining the simplicity of the DeMello-Concordia model is presented. Second, time scales of the regulated synchronous machine are analyzed using the linearized models, and the well-known effects of the high-gain regulator on the system are explained. A reduced-order model that captures the damping due to the power system stabilizer is presented. Third, speed damping terms are obtained in the swing equation in a multimachine environment by approximating the integral manifold associated with fast damper windings. This provides a theoretical basis for the practice of adding cross-damping terms to the swing equation to account for damping present in the system. Verification for the linearized case is provided using eigenvalue analysis.
Issue Date:1991
Rights Information:Copyright 1991 Varghese, Abraham
Date Available in IDEALS:2011-05-07
Identifier in Online Catalog:AAI9211021
OCLC Identifier:(UMI)AAI9211021

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