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Monitoring aging of natural ester insulating fluid using supercritical fluid chromatography mass spectrometry (SFC-MS)

Monitoring aging of natural ester insulating fluid using supercritical fluid chromatography mass spectrometry (SFC-MS)
Monitoring aging of natural ester insulating fluid using supercritical fluid chromatography mass spectrometry (SFC-MS)
Petroleum-based mineral oils have been used in transformers to provide cooling and insulation. However, there are increasing concerns over the persistence and impact of petroleum-based oils on the environment due to their resistance to biodegradation. Natural ester-based oils are considered to be sustainable alternatives, as they are biodegradable and possess improved fire safety properties compared to mineral oils. Here, supercritical fluid chromatography-mass spectrometry (SFC-MS) is used to study the chemical composition of natural ester oils and their behavior when subjected to aging experiments. Under the applied aging conditions detectable amounts of hydrolysis products (free fatty acids and DAGs) are evident in the aged samples. Furthermore, SFC-MS can also be used to simultaneously monitor the presence of other oil components, such as antioxidants.
Power transformers, natural ester insulation fluids, dielectric fluids, aging, hydrolysis, SFC-MS
IEEE
Thiruvengetam, Prabaharan
76b1efe1-89f8-4957-aca2-04240b5d65ef
Langley, G. John
7ac80d61-b91d-4261-ad17-255f94ea21ea
Herniman, Julie
530b1a36-1386-4602-8df7-defa6eb3512b
Hosier, Ian L.
6a44329e-b742-44de-afa7-073f80a78e26
Andritsch, Thomas
8681e640-e584-424e-a1f1-0d8b713de01c
Lewin, Paul L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Wilson, Gordon
627ef27a-ec7d-4512-8bf3-05dcb67c1d30
Brown, Richard C.D.
21ce697a-7c3a-480e-919f-429a3d8550f5
Thiruvengetam, Prabaharan
76b1efe1-89f8-4957-aca2-04240b5d65ef
Langley, G. John
7ac80d61-b91d-4261-ad17-255f94ea21ea
Herniman, Julie
530b1a36-1386-4602-8df7-defa6eb3512b
Hosier, Ian L.
6a44329e-b742-44de-afa7-073f80a78e26
Andritsch, Thomas
8681e640-e584-424e-a1f1-0d8b713de01c
Lewin, Paul L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Wilson, Gordon
627ef27a-ec7d-4512-8bf3-05dcb67c1d30
Brown, Richard C.D.
21ce697a-7c3a-480e-919f-429a3d8550f5

Thiruvengetam, Prabaharan, Langley, G. John, Herniman, Julie, Hosier, Ian L., Andritsch, Thomas, Lewin, Paul L., Wilson, Gordon and Brown, Richard C.D. (2024) Monitoring aging of natural ester insulating fluid using supercritical fluid chromatography mass spectrometry (SFC-MS). In Proceedings of IEEE 5th International Conference on Dielectrics. IEEE. 4 pp . (doi:10.1109/ICD59037.2024.10613221).

Record type: Conference or Workshop Item (Paper)

Abstract

Petroleum-based mineral oils have been used in transformers to provide cooling and insulation. However, there are increasing concerns over the persistence and impact of petroleum-based oils on the environment due to their resistance to biodegradation. Natural ester-based oils are considered to be sustainable alternatives, as they are biodegradable and possess improved fire safety properties compared to mineral oils. Here, supercritical fluid chromatography-mass spectrometry (SFC-MS) is used to study the chemical composition of natural ester oils and their behavior when subjected to aging experiments. Under the applied aging conditions detectable amounts of hydrolysis products (free fatty acids and DAGs) are evident in the aged samples. Furthermore, SFC-MS can also be used to simultaneously monitor the presence of other oil components, such as antioxidants.

Text
IEEE ICD2024-FinalRedactedVersion - Accepted Manuscript
Restricted to Repository staff only until 5 July 2026.
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More information

Accepted/In Press date: 5 July 2024
Published date: 5 September 2024
Venue - Dates: IEEE 5th International Conference on Dielectrics, , Toulouse, France, 2024-06-29 - 2024-07-04
Keywords: Power transformers, natural ester insulation fluids, dielectric fluids, aging, hydrolysis, SFC-MS
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Identifiers

Local EPrints ID: 492524
URI: http://eprints.soton.ac.uk/id/eprint/492524
DOI: doi:10.1109/ICD59037.2024.10613221
PURE UUID: 41b274db-b0ad-47dd-88f3-9eeb9ba01a09
ORCID for Prabaharan Thiruvengetam: ORCID iD orcid.org/0000-0003-3845-8490
ORCID for G. John Langley: ORCID iD orcid.org/0000-0002-8323-7235
ORCID for Julie Herniman: ORCID iD orcid.org/0000-0003-4834-1093
ORCID for Ian L. Hosier: ORCID iD orcid.org/0000-0003-4365-9385
ORCID for Thomas Andritsch: ORCID iD orcid.org/0000-0002-3462-022X
ORCID for Paul L. Lewin: ORCID iD orcid.org/0000-0002-3299-2556
ORCID for Richard C.D. Brown: ORCID iD orcid.org/0000-0003-0156-7087

Catalogue record

Date deposited: 30 Jul 2024 16:43
Last modified: 06 Sep 2024 01:46

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Contributors

Author: Prabaharan Thiruvengetam ORCID iD
Author: G. John Langley ORCID iD
Author: Julie Herniman ORCID iD
Author: Ian L. Hosier ORCID iD
Author: Thomas Andritsch ORCID iD
Author: Paul L. Lewin ORCID iD
Author: Gordon Wilson
Author: Richard C.D. Brown ORCID iD

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