Committee Chair

Karrar, Abdelrahman A.

Committee Member

Eltom, Ahmed H.; Kobet, Gary L.

Department

Dept. of Electrical Engineering

College

College of Engineering and Computer Science

Publisher

University of Tennessee at Chattanooga

Place of Publication

Chattanooga (Tenn.)

Abstract

The need for power system stabilizers (PSS) in interconnected power systems has become essential to damp low frequency oscillations and enhance the system stability. Conventional PSS design techniques utilize local measurements, hence allowing the use of single machine infinite bus method to tune the PSS parameters. However, these techniques do not provide a direct method to calculate the PSS gain. In this work, an explicit expression based on frequency analysis was derived that relates the PSS function and generator electrical torques. It showed that the torques developed at poorly damped modes have large imaginary component that do not contribute to damping. The PSS is tuned to correct the phase of these torques, thus, provide positive damping. The proposed method was examined on several test systems namely two-area four-machine, IEEE9, and IEEE39-bus system. Besides successfully improving the system damping, the proposed method was found to be robust at different loading conditions.

Degree

M. S.; A thesis submitted to the faculty of the University of Tennessee at Chattanooga in partial fulfillment of the requirements of the degree of Master of Science.

Date

8-2018

Subject

Electric power system stability; Distributed generation of electric power

Keyword

Power system stabilizers; Small signal stability; Electrical torques

Document Type

Masters theses

Extent

viii, 72 leaves

Language

English

Rights

Under copyright.

License

http://creativecommons.org/licenses/by-nc-nd/3.0/

Date Available

9-1-2019

Available for download on Sunday, September 01, 2019

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