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Pulse-count Distribution as a Possible Diagnostic Tool for Assessing the Level of Degradation of Rotating Machine Insulation

Geetha, HN and Srinivas, MB and Ramu, TS (1990) Pulse-count Distribution as a Possible Diagnostic Tool for Assessing the Level of Degradation of Rotating Machine Insulation. In: IEEE Transactions on Electrical Insulation, 25 (4). pp. 747-756.

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Abstract

The work covered in this paper pertains to a method by which one can qualitatively assess the condition of epoxy mica insulation systems used in large rotating machines, as function of time. Experimental techniques for acquisition and analysis of failure data have beeh presented. Experiments have been conducted on actual rotating machine coils subjected to combined electrical and thermal stress, under simulated conditions, so as to reflect the service environment as far as possible. Diagnostic measurements such as incremental loss tangent, capacitance change, partial discharge pulse count/magnitude, and PD energy have been performed along with destructive measurements (dielectric strength). Excellent correlations between pulse count/magnitude and dielectric strength appear to be present. This fact can be used, in the assessment of the degree of degeneration of the insulation.

Item Type: Journal Article
Additional Information: ©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.
Department/Centre: Division of Electrical Sciences > High Voltage Engineering (merged with EE)
Date Deposited: 18 Oct 2005
Last Modified: 19 Sep 2010 04:20
URI: http://eprints.iisc.ernet.in/id/eprint/3844

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