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Articles

Estimation of Paper-Moisture in Transformer Insulation Employing Dielectric Spectroscopy Data

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By Alok Prasanna Kumar, Hari Charan Verma, Arijit Baral, Arpan Pradhan
| The IET Digital Library
Estimation of Paper-Moisture in Transformer Insulation Employing Dielectric Spectroscopy Data Estimation of Paper-Moisture in Transformer Insulation Employing Dielectric Spectroscopy Data For access to this article, please select a purchase option: <?xml version="1.0" encoding="UTF-8"?><EVENT><EVENTLOG><PORTALID>iet</PORTALID><SESSIONID>4i6l1srqlk67s.x-iet-live-01</SESSIONID><USERAGENT>Mozilla/5.0 (compatible; MuckRack/1.0;...
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Condition assessment of various regions within non-uniformly aged cellulosic insulation of power transformer using modified Debye model

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By Hari Charan Verma, Arijit Baral, Arpan Pradhan, Sivaji Chakravorti
| The IET Digital Library
During normal operation, power transformer insulation always experiences a temperature gradient along radial direction with respect to core axis. Over time, this gradient creates non-uniform ageing within cellulosic insulation. Recent development such as Modified Debye Model (MDM) is found to be capable of modelling such non-uniformity. Owing to non-uniform ageing, measured tan?? value only provides the average of dielectric loss associated with various regions within the insulation.
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