Discriminating changes introduced in the model for the winding of a transformer based on measurements

Sahoo, Subrat K and Satish, L (2007) Discriminating changes introduced in the model for the winding of a transformer based on measurements. In: Electric Power Systems Research, 77 (7). 851 -858.

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Abstract

A systematic procedure is evolved that enables identification of the type-of-changes introduced in the model winding of a transformer, based on a comparison of measured neutral or line current and transfer-function with those corresponding to the reference case. Further, it was also possible to ascertain, whether the pertinent circuit element viz. series capacitance, shunt capacitance and self-inductance has increased or decreased (compared to initial value). The proposal was formulated based on analytical calculation and circuit simulation. Thereafter, the approach was experimentally verified using two model windings, and the results were found to be encouraging. Thus, it demonstrates one possible way, how interpretation of monitored data can lead to meaningful inferences.

Item Type:	Journal Article
Publication:	Electric Power Systems Research
Publisher:	Elsevier
Additional Information:	Copyright of this article belongs to Elsevier.
Keywords:	Diagnostic testing;Interpretation of monitored data;LVI testing;FRA/TF method
Department/Centre:	Division of Electrical Sciences > High Voltage Engineering (merged with EE)
Date Deposited:	20 Aug 2007
Last Modified:	19 Sep 2010 04:39
URI:	http://eprints.iisc.ac.in/id/eprint/11722

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