Influence of thermal ageing on dielectric properties of natural ester oil-impregnated paper
Influence of thermal ageing on dielectric properties of natural ester oil-impregnated paper
Mineral oil is widely used as a dielectric liquid in high-voltage direct-current (HVDC) converter transformers because of its excellent electrical insulating and cooling properties. Due to the low biodegradability and high fire risk of mineral oil, natural ester oil is gaining considerable interest as a potential alternative for HVDC converter transformers. This requires more information thorough understanding of the electrical behaviors of natural ester oil under various conditions. This article compares the impact of thermal aging on the space charge characteristics of natural ester oil-impregnated paper to mineral oil-impregnated paper. During thermal aging, although the increased acidity caused by the natural ester oil led to more charge accumulation in natural ester oil-impregnated paper compared to the mineral oil, the natural oil-impregnated paper showed a higher dc breakdown voltage.
Aging, DC breakdown, HVDC transmission, Minerals, Oil insulation, Oils, Power transformer insulation, Space charge, mineral oil, natural ester oil, pulsed electroacoustic method (PEA), space charge, thermal ageing, thermal aging
1337-1344
Yoon, Hyungjin
06d84948-6227-4c3f-bafb-8709a5b7536f
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Hosier, Ian
6a44329e-b742-44de-afa7-073f80a78e26
1 June 2023
Yoon, Hyungjin
06d84948-6227-4c3f-bafb-8709a5b7536f
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Hosier, Ian
6a44329e-b742-44de-afa7-073f80a78e26
Yoon, Hyungjin, Chen, George and Hosier, Ian
(2023)
Influence of thermal ageing on dielectric properties of natural ester oil-impregnated paper.
IEEE Transactions on Dielectrics & Electrical Insulation, 30 (3), .
(doi:10.1109/TDEI.2023.3268039).
Abstract
Mineral oil is widely used as a dielectric liquid in high-voltage direct-current (HVDC) converter transformers because of its excellent electrical insulating and cooling properties. Due to the low biodegradability and high fire risk of mineral oil, natural ester oil is gaining considerable interest as a potential alternative for HVDC converter transformers. This requires more information thorough understanding of the electrical behaviors of natural ester oil under various conditions. This article compares the impact of thermal aging on the space charge characteristics of natural ester oil-impregnated paper to mineral oil-impregnated paper. During thermal aging, although the increased acidity caused by the natural ester oil led to more charge accumulation in natural ester oil-impregnated paper compared to the mineral oil, the natural oil-impregnated paper showed a higher dc breakdown voltage.
Text
Influence of Thermal ageing on Dielectric Properties of Natural Ester Oil impregnated Paper
- Accepted Manuscript
More information
e-pub ahead of print date: 17 April 2023
Published date: 1 June 2023
Additional Information:
Funding Information:
This work was supported by M&I Materials Ltd., for supplying the research materials.
Publisher Copyright:
© 1994-2012 IEEE.
Keywords:
Aging, DC breakdown, HVDC transmission, Minerals, Oil insulation, Oils, Power transformer insulation, Space charge, mineral oil, natural ester oil, pulsed electroacoustic method (PEA), space charge, thermal ageing, thermal aging
Identifiers
Local EPrints ID: 476957
URI: http://eprints.soton.ac.uk/id/eprint/476957
ISSN: 1070-9878
PURE UUID: 1293de54-b12b-43d8-bacb-3f6133950b95
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Date deposited: 22 May 2023 16:35
Last modified: 17 Mar 2024 03:56
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Author:
Hyungjin Yoon
Author:
George Chen
Author:
Ian Hosier
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