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A novel approach for on-line deformation diagnostics of transformer windings

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Title A novel approach for on-line deformation diagnostics of transformer windings
 
Creator JOSHI, PM
KULKARNI, SV
 
Subject power transformers
frequency-range
displacements
current deviation coefficient (cdc)
frequency response analysis
power transformer
series capacitance
ground capacitance
winding deformation
 
Description This paper discusses an elegantly simple on-line approach for deformation diagnostics of transformer winding. The Current Deviation Coefficient (CDC) derived from terminal current measurements at a selected high frequency (HF) is found to be an effective indicator for locating deformed section of the winding. Also, any deviations of HF terminal currents from their fingerprint values can be used to find the extent of deformation. An on-line method for detecting winding deformations in three-phase star- or delta-connected winding is also elaborated in the paper. Finally, a proposal for simultaneous on-line monitoring of HV and LV windings using the novel on-line approach is discussed.
 
Publisher IEEE
 
Date 2011-10-25T13:33:39Z
2011-12-15T09:11:56Z
2011-10-25T13:33:39Z
2011-12-15T09:11:56Z
2010
 
Type Proceedings Paper
 
Identifier IEEE POWER AND ENERGY SOCIETY GENERAL MEETING 2010,-
978-1-4244-8357-0
http://dspace.library.iitb.ac.in/xmlui/handle/10054/15734
http://hdl.handle.net/100/2388
 
Source PES General Meeting,Minneapolis, MN,JUL 25-29, 2010
 
Language English