NDLI: Diagnosis of transformer insulation condition using recovery voltage measurements

Content Provider	IEEE Xplore Digital Library
Author	Talib, M.A. Ghazali, N.A.M. Christie, M. Zakaria, W. Hashim, I. Uthman, S. Jamali, M.N.
Copyright Year	2003
Description	Author affiliation: Kawasan Institusi Penyelidikan, Selangor, Malaysia (Talib, M.A.; Ghazali, N.A.M.; Christie, M.; Zakaria, W.; Hashim, I.; Uthman, S.; Jamali, M.N.)
Abstract	Moisture is one of the factors that cause transformer insulation degradation. The detection of moisture in oil and paper insulation is crucial in determining the health of transformer insulation system. High moisture content severely degrades the insulating strength of oil and paper and may eventually cause failure. In recent years, new diagnostic and monitoring techniques have been promoted to complement the classical insulation resistance, power dissipation factor and polarization index measurements. The new test method described in this paper is based on analysis of the polarization spectrum traced from the results of recovery voltage measurements (RVM). This method makes possible assessment of the condition of oil/paper insulation system. This paper shows some applications of RVM for determining the moisture level in the power transformers. The possible use of this method as a diagnostic tool for evaluates ageing trends or actual state of insulation is also discussed.
Starting Page	329
Ending Page	332
File Size	811731
Page Count	4
File Format	PDF
ISBN	0780382080
DOI	10.1109/PECON.2003.1437467
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-12-15
Publisher Place	Malaysia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power transformer insulation Voltage measurement Oil insulation Power transformers Moisture Petroleum Degradation Polarization Condition monitoring Power dissipation
Content Type	Text
Resource Type	Article

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