Performance of natural ester as a transformer oil in moisture-rich environments

Bandara, Kapila, Ekanayake, Chandima, Saha, Tapan and Ma, Hui (2016) Performance of natural ester as a transformer oil in moisture-rich environments. Energies, 9 4: . doi:10.3390/en9040258


Author Bandara, Kapila
Ekanayake, Chandima
Saha, Tapan
Ma, Hui
Title Performance of natural ester as a transformer oil in moisture-rich environments
Journal name Energies   Check publisher's open access policy
ISSN 1996-1073
Publication date 2016-04
Sub-type Article (original research)
DOI 10.3390/en9040258
Open Access Status DOI
Volume 9
Issue 4
Total pages 13
Place of publication Basel, Switzerland
Publisher MDPI
Collection year 2017
Language eng
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.
Keyword Acidity
Ageing
Colour
Dielectric dissipation factor (DDF)
Hydrolysis
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
School of Information Technology and Electrical Engineering Publications
 
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