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Effect of aging on the physical, chemical and dielectric properties of dodecylbenzene cable oil

Effect of aging on the physical, chemical and dielectric properties of dodecylbenzene cable oil
Effect of aging on the physical, chemical and dielectric properties of dodecylbenzene cable oil
In high voltage transformers a liquid dielectric,such as mineral oil, serves both as an electrical insulator (in conjunction with paper) and as a coolant. Similarly, in paper/oil cables mineral oil or dodecylbenzene in conjunction with paper serves as the electrical insulator. In such systems, the oil serves as a convenient medium for sampling to indicate plant health. In the current study dodecylbenzene was aged at elevated temperatures in the presence of air and copper. A battery of tests was then performed to assess the changes in physical, chemical and electrical properties. After aging the oils were yellowed and oils aged with copper showed oxidation, increased water content and the formation of a precipitate, whilst those aged in the absence of copper showed much less aging. Changes in electrical properties were noted such as increased dielectric loss, increased electrical conductivity and decreased dielectric breakdown strength. It was found that the presence of the precipitate did not affect the electrical properties of the oil
812-815
Hosier, Ian L.
6a44329e-b742-44de-afa7-073f80a78e26
Koilraj, Jim E.A.
9d69d1a5-7bb5-4fa6-8087-374b9e216caf
Vaughan, Alun S.
6d813b66-17f9-4864-9763-25a6d659d8a3
Hosier, Ian L.
6a44329e-b742-44de-afa7-073f80a78e26
Koilraj, Jim E.A.
9d69d1a5-7bb5-4fa6-8087-374b9e216caf
Vaughan, Alun S.
6d813b66-17f9-4864-9763-25a6d659d8a3

Hosier, Ian L., Koilraj, Jim E.A. and Vaughan, Alun S. (2016) Effect of aging on the physical, chemical and dielectric properties of dodecylbenzene cable oil. 1st International Conference on Dielectrics, Montpellier, France. 03 - 07 Jul 2016. pp. 812-815 .

Record type: Conference or Workshop Item (Other)

Abstract

In high voltage transformers a liquid dielectric,such as mineral oil, serves both as an electrical insulator (in conjunction with paper) and as a coolant. Similarly, in paper/oil cables mineral oil or dodecylbenzene in conjunction with paper serves as the electrical insulator. In such systems, the oil serves as a convenient medium for sampling to indicate plant health. In the current study dodecylbenzene was aged at elevated temperatures in the presence of air and copper. A battery of tests was then performed to assess the changes in physical, chemical and electrical properties. After aging the oils were yellowed and oils aged with copper showed oxidation, increased water content and the formation of a precipitate, whilst those aged in the absence of copper showed much less aging. Changes in electrical properties were noted such as increased dielectric loss, increased electrical conductivity and decreased dielectric breakdown strength. It was found that the presence of the precipitate did not affect the electrical properties of the oil

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e-pub ahead of print date: 7 July 2016
Published date: 1 September 2016
Venue - Dates: 1st International Conference on Dielectrics, Montpellier, France, 2016-07-03 - 2016-07-07
Organisations: Electronics & Computer Science

Identifiers

Local EPrints ID: 397930
URI: http://eprints.soton.ac.uk/id/eprint/397930
PURE UUID: 17ac3046-ce3f-4749-9b5e-b3309c82d452
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

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Date deposited: 12 Jul 2016 11:15
Last modified: 17 Dec 2019 01:52

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Contributors

Author: Ian L. Hosier ORCID iD
Author: Jim E.A. Koilraj
Author: Alun S. Vaughan ORCID iD

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