Three-Phase Subharmonic Oscillations in Symmetrical Power Systems
Wright, I.A.
Department of Electrical Engineering, Monash University;
This paper appears in: Power Apparatus and Systems, IEEE Transactions on
Publication Date: May 1971
Volume: PAS-90,
Issue: 3
On page(s): 1295-1304
ISSN: 0018-9510
Digital Object Identifier: 10.1109/TPAS.1971.292931
Current Version Published: 2007-01-29
Abstract
This work makes a three-phase TNA study of the most commonly observed subharmonic oscillation, that is, the 1/3-order subharmonic. Symmetrical Y-connected systems are studied wherein the neutral is firstly solidly-grounded, and secondly resistively-grounded. The influence on the subharmonic performance of this, and other system parameters, is determined. The belief that 1/3-order subharmonic oscillations could not occur in ungrounded symmetrical systems is shown to be incorrect.
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