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Ukoima, K. N.
Department of Electrical & Electronic Engineering. Michael Okpara University of Agriculture, Umudike, Nigeria
Obi, P. I.
Department of Electrical & Electronic Engineering. Michael Okpara University of Agriculture, Umudike, Nigeria
Ezeonye, C. S.
Department of Electrical & Electronic Engineering. Michael Okpara University of Agriculture, Umudike, Nigeria
ABSTRACT
The performance of an electric system is characterized by the stability of the frequency and
voltage. To sustain electric performance, a governor is used to maintain the speed (and hence
frequency) of the generator at its nominal value. Another important factor in stability is the
excitation control. In this paper, a study of the effect of excitation and governor on the stability
of electric machines is presented. In particular, a model of a synchronous machine (in generator
mode) connected to a hydraulic turbine Proportional-Integral-Derivative (PID) governor with
excitation system is analyzed. A three phase fault is used to represent system disturbance. All
simulations were performed in simulink. Simulation results obtained shows that excitation and
governor control stabilizes the output terminal voltage of the synchronous electrical machine
within three seconds in the presence of a fault. This shows that excitation and governor control
play a vital role in the dynamic stability of electric machines.
Keywords: Electric system, Governor, Excitation, Synchronous machine, Stability, Generator
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Conference Code
IECON2019
Conference Title
ENGINEERING FOR SUSTAINABLE ECONOMIC DIVERSIFICATION, FOOD AND NATIONAL SECURITY
ISBN
978-978-53175-8-9
Date Published
Friday, September 20, 2019
Conference Date
2nd - 4th September, 2019
The contents of the articles are the sole opinion of the author(s) and not of UJET.
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