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Harmonic Minimization in the Operation of Static VAR Compensators for Unbalanced Reactive Power Compensation

Thukaram, D and Khincha, HP and RaviKumar, B (2004) Harmonic Minimization in the Operation of Static VAR Compensators for Unbalanced Reactive Power Compensation. In: 2004 International Conference on Power System Technology-POWERCON, 21-24 November, Singapore, Vol.1, 328 -334.


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Phase-wise unbalanced reactive power compensations are required in distribution systems for dynamic power factor correction and terminal voltage stabilization. Shunt compensators are generally used to reduce or cancel the phase-wise unbalanced reactive power (VAR) demand and to minimize the reactive power drawn from the AC supply lines. Static VAR compensators are preferred over traditional VAR compensators for this purpose. The operation of thyristor-controlled compensators at various conduction angles can be used advantageously to meet the unbalanced reactive power demands in a system. However such an operation introduces harmonic currents in to the AC system. In such cases it becomes necessary either to minimize harmonic generation internally or provide external harmonic filters. In this paper, an approach is presented for operation of VAR compensators for minimization of the effect of the harmonics using the telephone influence factor (TIF) and the total harmonic distortion factor (THD) for a typical distribution system.

Item Type: Conference Paper
Publisher: IEEE
Additional Information: �©1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords: Power quality;Thyristor controlled reactor;VAR compensation;Harmonic reduction
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 02 Dec 2005
Last Modified: 19 Sep 2010 04:21
URI: http://eprints.iisc.ac.in/id/eprint/4244

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