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Structure of Transfer Function of Transformers With Special Reference to Interleaved Windings

Satish, L and Jain, Anurag (2002) Structure of Transfer Function of Transformers With Special Reference to Interleaved Windings. In: IEEE Transactions on Power Delivery, 17 (3). pp. 754-760.

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Abstract

A transfer function (TF) is computed during impulse tests on transformers. The structure and shape of TF depends on the type of winding, namely, disc, layer-type, or interleaved winding. There are certain features specific to TF of an interleaved winding, which has, over the years, been attributed to its increased series capacitance. However, reasons for why an increase in series capacitance should introduce such differences, the presence of only a few (lower frequency) poles in interleaved windings, etc., is as yet unknown. By analytically solving the equivalent circuit model, mathematical explanations are deduced. It is demonstrated, for the first time, how pole-zero cancellation and winding resistance are both instrumental in determining the structure of TF of interleaved windings.

Item Type: Journal Article
Additional Information: Copyright 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords: Diagnostics;Impulse tests;Interleaved windings;Transfer function (TF);Transformers
Department/Centre: Division of Electrical Sciences > High Voltage Engineering (merged with EE)
Date Deposited: 13 Jan 2006
Last Modified: 19 Sep 2010 04:22
URI: http://eprints.iisc.ernet.in/id/eprint/5021

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