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Onah, A. J.
Department of Electrical/Electronics, Michael Okpara University of Agriculture, Umudike, P.M.B. 7267, Umuahia. Abia State, Nigeria
Nwaorgu, A. O.
Department of Electrical/Electronics, Michael Okpara University of Agriculture, Umudike, P.M.B. 7267, Umuahia. Abia State, Nigeria
Obasi, R. U.
Department of Electrical/Electronics, Michael Okpara University of Agriculture, Umudike, P.M.B. 7267, Umuahia. Abia State, Nigeria
ABSTRACT
In an electric utility network, it is desirable to regulate the voltage within a narrow range of its nominal value (±5% range around their nominal values). Since the load varies from time to time, the reactive power balance in a grid varies as well. It can be shown that the voltage drop on the line is a function of the reactive power flowing on the line. To control dynamic voltage swings under various system conditions and thereby improve the power system transmission and distribution performance, a fast acting Static VAr Compensator (SVC) is required to produce or absorb reactive power so as to provide the necessary reactive power balance for the system. The function of the SVC is to maintain the voltage of the bus connected at a constant value. In this paper an SVC configuration known as Thyristor-Switched Capacitor (TSC) is examined, as applied to shunt reactive compensation. The compensator was connected to the load end of a system operating at 0.7 power factor. By supplying some value of reactive power, it raised the power factor to an optimal value of 0.96, thereby improving the efficiency of the system.
Keywords: Reactive power, var compensator, voltage regulation, TSC, transmission
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Published
Wednesday, June 21, 2017
Issue
Vol. 3 No. 1, JUNE 2017
Article Section
GENERAL
The contents of the articles are the sole opinion of the author(s) and not of UJET.
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