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Impulse testing of power transformers - A model reference approach
V. Jayashankar
Published in
2004
Volume: 151
   
Issue: 1
Pages: 25 - 30
Abstract
An objective classification of faults that can occur during impulse tests on power transformers is proposed. It includes nonlinear elements, breakdown, and partial discharge events. An analysis of a layer winding in the time and frequency domains with these faults shows that current assessment methods must be used with caution. A model reference approach is proposed to distinctly improve recognition in such cases. The method is immune to changes of wave shape and the instant of fault is available by observation.
About the journal
JournalIEE Proceedings: Science, Measurement and Technology
ISSN13502344
Open AccessNo
Concepts (13)
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    Electric fault currents
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    Electric potential
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    Electric windings
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    IMPULSE TESTING
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    Mathematical models
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    Networks (circuits)
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    Partial discharges
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    Time domain analysis
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    Transfer functions
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    Waveform analysis
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    DIGITAL ACQUISITION SYSTEMS
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    NONLINEAR RESISTANCE
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    Electric transformers