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Aging behaviour of dodecylbenzene in the presence of copper and dibenzyl disulfide (DBDS)

Aging behaviour of dodecylbenzene in the presence of copper and dibenzyl disulfide (DBDS)
Aging behaviour of dodecylbenzene in the presence of copper and dibenzyl disulfide (DBDS)
Copper sulfide deposition remains a serious issue in high voltage power transformers and can result in equipment failure. In order to understand the chemistry of this process, dodecylbenzene was used as a model oil system. Copper and dibenzyl disulfide (DBDS) were added in controlled amounts and accelerated aging was then performed. It was found that copper sulfide (CuxS) could be formed (i.e. the included copper sheets were blackened) even under non-oxidative conditions but only when DBDS was present in the oil. The reaction was accelerated in the presence of oxygen and competes for available copper with the parallel copper carboxylate producing reaction. The AC breakdown strength was reduced after aging, but exhibited a more catastrophic reduction in oils containing DBDS, confirming the detrimental effects of CuxS on breakdown performance
1032-1035
Hosier, Ian L.
6a44329e-b742-44de-afa7-073f80a78e26
Lai, Linxu
58b8fbd8-d00f-4ddf-bf5a-d8bd16776031
Vaughan, Alun S.
6d813b66-17f9-4864-9763-25a6d659d8a3
Hosier, Ian L.
6a44329e-b742-44de-afa7-073f80a78e26
Lai, Linxu
58b8fbd8-d00f-4ddf-bf5a-d8bd16776031
Vaughan, Alun S.
6d813b66-17f9-4864-9763-25a6d659d8a3

Hosier, Ian L., Lai, Linxu and Vaughan, Alun S. (2016) Aging behaviour of dodecylbenzene in the presence of copper and dibenzyl disulfide (DBDS). 1st International Conference on Dielectrics, Montpellier, France. 03 - 07 Jul 2016. pp. 1032-1035 . (doi:10.1109/ICD.2016.7547794).

Record type: Conference or Workshop Item (Poster)

Abstract

Copper sulfide deposition remains a serious issue in high voltage power transformers and can result in equipment failure. In order to understand the chemistry of this process, dodecylbenzene was used as a model oil system. Copper and dibenzyl disulfide (DBDS) were added in controlled amounts and accelerated aging was then performed. It was found that copper sulfide (CuxS) could be formed (i.e. the included copper sheets were blackened) even under non-oxidative conditions but only when DBDS was present in the oil. The reaction was accelerated in the presence of oxygen and competes for available copper with the parallel copper carboxylate producing reaction. The AC breakdown strength was reduced after aging, but exhibited a more catastrophic reduction in oils containing DBDS, confirming the detrimental effects of CuxS on breakdown performance

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More information

e-pub ahead of print date: 23 August 2016
Published date: 23 August 2016
Venue - Dates: 1st International Conference on Dielectrics, Montpellier, France, 2016-07-03 - 2016-07-07
Organisations: Electronics & Computer Science

Identifiers

Local EPrints ID: 397931
URI: http://eprints.soton.ac.uk/id/eprint/397931
PURE UUID: a78a5cc3-04f8-4222-abb2-ec0f0fa86293
ORCID for Ian L. Hosier: ORCID iD orcid.org/0000-0003-4365-9385
ORCID for Alun S. Vaughan: ORCID iD orcid.org/0000-0002-0535-513X

Catalogue record

Date deposited: 12 Jul 2016 11:18
Last modified: 20 Jul 2019 01:07

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