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On the use of concurrent high frequency excitation during a short circuit test in a power transformer
V. Jayashankar,
Published in IEEE Computer Society
2009
Pages: 1262 - 1267
Abstract
The short circuit test is a special test for proving the mechanical integrity of a power transformer. Conventionally a change in reactance exceeding 2% after the test is an indication of failure. Concurrent high frequency excitation is shown to be more sensitive method for detecting winding deformation. A 'benchmark' layer winding is used to validate the use of high frequency excitation. Axial displacement, compression and buckling of the winding are simulated and the changes are identified. It is clearly established that for all these changes high frequency excitation is more sensitive. © 2009 IEEE.
About the journal
JournalData powered by Typeset2009 IEEE Intrumentation and Measurement Technology Conference, I2MTC 2009
PublisherData powered by TypesetIEEE Computer Society
Open AccessNo
Concepts (15)
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    Axial displacements
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    HIGH-FREQUENCY EXCITATION
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    Mechanical integrity
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    RADIAL COMPRESSION
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    SENSITIVE METHOD
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    Short circuit tests
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    WINDING DEFORMATIONS
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    ELECTRIC INSTRUMENT TRANSFORMERS
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    Measurement theory
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    Power transformers
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    Testing
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    TRANSFORMER SUBSTATIONS
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    Welds
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    Winding
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    Electric transformer testing