Committee Chair

Eltom, Ahmed

Committee Member

Kobet, Gary; Sisworahardjo, Nurhidajat; Sutton, William; Walker, Randy

Department

Dept. of Electrical Engineering

College

College of Engineering and Computer Science

Publisher

University of Tennessee at Chattanooga

Place of Publication

Chattanooga (Tenn.)

Abstract

When an Out of Step (OOS) event occurs between two connected areas in the power system, the two areas should be separated before the OOS results in generation loss, equipment damage, and eventually a total black-out. This separation is achieved via the OOS function that implemented at specific transmission lines. One of the commonly used methods to achieve the OOS tripping functionality is the Dual-Blinder Scheme, which compare the locally measured impedance to a set value. In this research, a Phasor-Based OOS tripping function, based on the derivatives of the voltage phase angle difference between the two areas, is evaluated against the Dual-Blinder method using a real-time digital simulator, a protective relay, and a Synchrophasor Vector Processor (SVP). The evaluation shows that the Phasor-Based function predicted the OOS before the Dual-Blinder OOS function when the power system was having damping problems. In other cases, the Dual-Blinder OOS function tripped faster in most of the considered cases. Finally, this research suggests some improvements for implementing the Phasor-Based OOS function in the future.

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

5-2014

Subject

Electric power systems -- Control; Electric power transmission -- Measurement

Keyword

Out of Step tripping, Phasor measurements, Dual blinder, Performance comparison, Synchrophasor Vector Processor

Document Type

Masters theses

Extent

xi, 116 leaves

Language

English

Rights

Under copyright.

License

http://creativecommons.org/licenses/by/3.0/

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