NDLI: Life Assessment of Power Transformers via Paper Ageing Analysis

Content Provider	IEEE Xplore Digital Library
Author	Poniran, Zalizah Malek, Zulkurnain Abdul
Copyright Year	2007
Description	Author affiliation: TNB Research Sdn Bhd, Malaysia. zalizah@tnrd.com.my (Poniran, Zalizah) \|\| High Voltage & High Current Institute, Universiti Teknologi Malaysia. zulk@fke.utm.my (Malek, Zulkurnain Abdul)
Abstract	The status of insulation in electrical power equipment at any given point in time can be assessed by monitoring several properties which are sensitive to the amount of ageing. This procedure is commonly known as the diagnostic or non-destructive testing. For power transformers, the condition of the paper insulation can be assessed by an examination of the tracks provided by by-products of chemical dissociation of cellulose in solution with oil. This work addresses the need of paper insulation condition monitoring by determining the furfural contents in transformer oil using High Performance Liquid Chromatography (HPLC) technique. The degradation of electrical Kraft paper under laboratory ageing experiment was examined by means of assessing the increase of concentration of furan compounds as well as the increase of moisture content. Experimental results show that the thermal ageing process causes a proportional increase in 2-FAL furan compound as well as in moisture content. Both increases were shown to be related to the ageing or degradation of paper insulation.
Starting Page	460
Ending Page	465
File Size	1723193
Page Count	6
File Format	PDF
ISBN	9781424408948
DOI	10.1109/POWERENG.2007.4380104
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-04-12
Publisher Place	Portugal
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Dielectrics and electrical insulation Nondestructive testing Moisture Aging Oil insulation Insulation life Power transformers Chemicals Power transformer insulation Thermal degradation
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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