Diagnostic testing of power transformer insulation by response measurements in frequency domain
Date
2000-12-16
Authors
Mularachchi, K.
Fernando, M.
Journal Title
Journal ISSN
Volume Title
Publisher
University of Peradeniya
Abstract
This paper presents results of frequency domain response measurements on field-aged power transformer insulation comprising oil and cellulose material (paper. pressboard. etc.). Different types of oil-paper insulated power transformers were selected from the hydropower stations in Sri Lanka. The loss tangent of the transformer insulation was measured over a broad frequency range. It is shown that the variation of loss tangent over frequency provides an easy classification of new and aged transformers.
Description
Keywords
Electrical , Engineering Poer transformer Measurement Frequency
Citation
Proceedings and Abstract of the Annual Research Sessions, December 16, 2000, University of Peradeniya, Sri Lanka pp 111-118