On the Estimation of Elapsed Life of Oil-Immersed Power Transformers

Pradhan, Manoj Kumar and Ramu, TS (2005) On the Estimation of Elapsed Life of Oil-Immersed Power Transformers. In: IEEE Transactions on Power Delivery, 20 (3). pp. 1962-1969.

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Abstract

Inadvertent failure of power transformers has serious consequences on the system reliability, economics, and the revenue accrual. An accurate estimation of transformer life can, to a very large extent, mitigate the problems, besides satisfying the conflicting requirements of optimum utilization of the equipment and safe guarding the reliability.In this endeavour, the authors have planned long duration aging experiments on scaled-down (prorated) models [1] of a transformer,incorporating all of the essential features of actual equipment under normal operating electric stress and accelerated thermal stress. In continuation of the authors' earlier experimental investigations, an elapsed life assessment study has been instituted by acquiring insulation-aging data under accelerated thermal stresses.

Item Type:	Journal Article
Publication:	IEEE Transactions on Power Delivery
Publisher:	IEEE
Additional Information:	���©2005 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:	Carbon oxides;degree of polymerization;elapsed life;empirical model;furfurals;transformer insulation
Department/Centre:	Division of Electrical Sciences > High Voltage Engineering (merged with EE)
Date Deposited:	24 Aug 2005
Last Modified:	19 Sep 2010 04:19
URI:	http://eprints.iisc.ac.in/id/eprint/3416

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