Committee Chair

Disfani, Vahid R.

Committee Member

Karrar, Abdelrahman A.; Ofoli, Abdul R.; Ahmed, Raga

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 remarkable growth of power electronics-interfaced renewable generations in the electric power grid has the potential to pronounce the effect of frequency disturbances such as inter-area oscillations. These low-frequency disturbances reduce transmission lines capacity, and at worst even damage the power grid infrastructures. In this paper, we propose a novel control algorithm to eliminate inter-area oscillations modes based on local measurements of frequency and the system's global average frequency. The performance of the proposed solution is investigated on different multi-machine test systems with classic and detailed electromechanical dynamic models through modal analysis and time-domain simulations. The modal analysis results indicate that all the inter-area modes are damped for all test cases. Time-domain simulations also demonstrate that the proposed control not only takes the system to near-zero inter-area oscillations but also improves other power system stability measures such as transient stability and frequency nadir.

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

8-2021

Subject

Automatic frequency control; Eigenvalues; Electric power system stability; Mathematical models; Modal analysis

Keyword

Eigenvalues; frequency control; modal analysis; power system stability; time-domain simulations

Document Type

Masters theses

DCMI Type

Text

Extent

xi, 68 leaves

Language

English

Rights

http://rightsstatements.org/vocab/InC/1.0/

License

http://creativecommons.org/licenses/by/4.0/

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