NDLI: Comparison of low thermal fault gases of various fatty acid mono esters

Content Provider	IEEE Xplore Digital Library
Author	Rajab, A. Tsuchie, M. Kozako, M. Hikita, M. Hatada, S. Suzuki, T. Kanetani, A.
Copyright Year	2015
Description	Author affiliation: Andalas Univ., Padang, Indonesia (Rajab, A.) \|\| Dept. of Electr. & Electron. Eng., Kyushu Inst. of Technol., Kitakyushu, Japan (Tsuchie, M.; Kozako, M.; Hikita, M.) \|\| Chem. Res. Labs., Lion Corp., Ltd., Tokyo, Japan (Hatada, S.; Suzuki, T.; Kanetani, A.)
Abstract	Proven to be a good substitute for mineral oil as insulation in distribution transformer, natural ester oils have been implemented in higher voltage of power transformer since 2002. Gases generated by such oils need to be examined to diagnose the presence of faults in natural ester immersed transformer in service, based on dissolved gas analysis (DGA) method. In this paper, the gas generations of chemically modified natural esters which are palm fatty acid monoesters under low temperature overheating ranging from 200 to 300 °C were analyzed. Localized thermal faults were conducted to simulate the real condition in transformer operation. Experiment on several kinds of fatty acid monoesters with similar and different molecular structure as well as mineral oil were also performed for comparison. Types of gases, concentrations and their trend against temperature variation were investigated. The differences of generated gases between the fatty acid monoesters having C-C double bond in their molecular structure and those without C-C double bond are discussed. Comparison of the gas generation trend between tested oils and commercially available natural ester insulation oil reported in the previous literature, as well as mineral oil are also elaborated. The possibility of generating gas ratio method to expect the overheating temperature is also evaluated.
Starting Page	64
Ending Page	67
File Size	1463922
Page Count	4
File Format	PDF
ISSN	21609241
e-ISBN	9781479989034
DOI	10.1109/ICPADM.2015.7295209
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-19
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Oils Minerals Oil insulation Gases Power transformer insulation Carbon transformer dissolved gas analysis gas ratio insulating oil low thermal fault chemically modified natural ester
Content Type	Text
Resource Type	Article

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