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Performance of Natural Ester as a Transformer Oil in Moisture-Rich Environments

descriptionPublicationkeyboard_double_arrow_right Article , Journal , Other literature type 31 Mar 2016 Australia Publisher:MDPI AGJournal:Energies, volume 9, page 258 (eissn: 1996-1073,

Authors: Kapila Bandara; Chandima Ekanayake; Tapan Saha; Hui Ma;

doi: 10.3390/en9040258

handle: 10072/173328

Performance of Natural Ester as a Transformer Oil in Moisture-Rich Environments

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Abstract

Interest has risen among utilities in using natural ester (NE) insulating oils in transformers as a substitute for conventional mineral oil. However, present understanding on aging behaviour of NE-paper composite insulation system and knowledge on application of existing condition monitoring tools for NE-based insulation are inadequate. This limits the cost effective and reliable field applications of NE insulating oil. To pave the way the application of NE-based insulation in transformers, a systematic study has been performed to compare the aging behaviour of transformer grade pressboard (PB) impregnated in NE and conventional mineral oil. Applicability of a number of chemical and physical parameters, including acidity value, dielectric dissipation factor (DDF), viscosity, and colour for assessing the quality of NE insulating oil is also discussed in this paper. Comparisons are made based on the limiting values provided in the related IEEE Standard and properties of mineral oil under similar aging conditions.

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Australia

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Keywords

690, acidity; ageing; colour; dielectric dissipation factor (DDF); hydrolysis; natural ester (NE); mineral oil; oxidation; viscosity, Acidity, Hydrolysis, Dielectric dissipation factor (DDF), Colour, Physical sciences, Ageing, 1700 Computer Science, Engineering, Electrical engineering not elsewhere classified

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Impact byBIP!

	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	46
	popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.	Top 10%
	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 10%