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oai:www.ideals.illinois.edu:2142/19181 2023-07-10 col_2142_5131 col_2142_8888 com_2142_5130 com_2142_8887 com_2142_234

Sauer, Peter W. Varghese, Abraham 2011-05-07T11:59:25Z 2011-05-07T11:59:25Z 10000-01-01 1991 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. Made available in DSpace on 2011-05-07T11:59:25Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9211021.pdf: 2099443 bytes, checksum: f0d516f98c74388e9b6e8062c654addd (MD5) Previous issue date: 1991 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:35:12Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:13:47-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission ETDs are only available to UIUC Users without author permission U of I Only AAI9211021 (UMI)AAI9211021 http://hdl.handle.net/2142/19181 eng Copyright 1991 Varghese, Abraham Engineering, Electronics and Electrical Modeling of power system dynamics in the medium time scale text Electrical and Computer Engineering Electrical Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.