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Title: Analysis of sympathetic inrush phenomena in transformers using coupled field-circuit approach
Authors: KUMBHAR, GB
Keywords: Electric Power Systems
Parameter Estimation
Finite Element Analysis
Power Transformers
Issue Date: 2007
Publisher: IEEE
Citation: Proceeding of the IEEE Power Engineering Society General Meeting, Tampa, USA, 24-28 June 2007, 1-6
Abstract: Sympathetic inrush current phenomenon occurs when a transformer is switched on in a power system network containing other transformers which are already energized. In this paper, the phenomenon of sympathetic inrush current is investigated using nonlinear-transient field-circuit coupled finite element formulation. The cases of the transformers connected in parallel and in series have been considered. The results obtained for a 31.5 MVA, three-phase transformer are presented and discussed in detail. This work also includes the investigation of parameters affecting the magnitude and duration of sympathetic inrush phenomenon, such as series resistance, switching-on angle, residual flux density and load conditions. These analyses provide a sound theoretical basis for a thorough understanding of the phenomenon.
URI: 10.1109/PES.2007.386128
ISBN: 1-4244-1298-6
Appears in Collections:Proceedings papers

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