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Impact of Corrosive Sulfur in Transformer Insulation Paper

Impact of Corrosive Sulfur in Transformer Insulation Paper
Impact of Corrosive Sulfur in Transformer Insulation Paper
In recent years a significant volume of research has been undertaken in order to understand the latest failures in oil insulated power apparatus due to deposition of copper sulfide on the conductors and in the insulation paper. Dibenzyl Disulfide (DBDS) has been found to be the leading corrosive sulfur compound in the insulation oil. As there are currently no nondestructive techniques available to analyze the degree of damage from sulfur corrosion, electrical plant operators are faced with a choice of either replacing an asset which might still have several years of operational life or keeping a transformer operational with an increased risk of failure. This paper investigates permittivity and loss factor curves of transformer oil impregnated insulation paper, at different corrosive sulfur degradation stages. Three types of transformer conductors are investigated; new, artificially aged and service aged. To increase the understanding of the electrical behavior of Cu2S this paper demonstrates how the electrical properties change with moisture content. Dielectric spectroscopy is used to demonstrate some of the electrical changes across a wide frequency range, from 1mHz to 1MHz.
978-1-4673-4739-6
459-463
Amaro, P S
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Holt, A F
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Facciotti, M
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Pilgrim, J A
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Lewin, P L
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Brown, R C D
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Wilson, G
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Jarman, P N
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Amaro, P S
09096f1c-3840-48a7-a65d-d734ff70c88c
Holt, A F
6a6195df-03d6-4174-a504-8ca2965e52df
Facciotti, M
3c5dd179-8124-4d79-99b2-faa2aa37e96f
Pilgrim, J A
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Lewin, P L
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Brown, R C D
21ce697a-7c3a-480e-919f-429a3d8550f5
Wilson, G
25fbd90e-6949-481c-9e75-0d457003c839
Jarman, P N
8e6247bc-f98c-4dac-b150-b7213f2184d5

Amaro, P S, Holt, A F, Facciotti, M, Pilgrim, J A, Lewin, P L, Brown, R C D, Wilson, G and Jarman, P N (2013) Impact of Corrosive Sulfur in Transformer Insulation Paper. IEEE 2013 Electrical Insulation Conference, Ottawa, Canada. 01 - 04 Jun 2013. pp. 459-463 .

Record type: Conference or Workshop Item (Paper)

Abstract

In recent years a significant volume of research has been undertaken in order to understand the latest failures in oil insulated power apparatus due to deposition of copper sulfide on the conductors and in the insulation paper. Dibenzyl Disulfide (DBDS) has been found to be the leading corrosive sulfur compound in the insulation oil. As there are currently no nondestructive techniques available to analyze the degree of damage from sulfur corrosion, electrical plant operators are faced with a choice of either replacing an asset which might still have several years of operational life or keeping a transformer operational with an increased risk of failure. This paper investigates permittivity and loss factor curves of transformer oil impregnated insulation paper, at different corrosive sulfur degradation stages. Three types of transformer conductors are investigated; new, artificially aged and service aged. To increase the understanding of the electrical behavior of Cu2S this paper demonstrates how the electrical properties change with moisture content. Dielectric spectroscopy is used to demonstrate some of the electrical changes across a wide frequency range, from 1mHz to 1MHz.

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Published date: 2 June 2013
Venue - Dates: IEEE 2013 Electrical Insulation Conference, Ottawa, Canada, 2013-06-01 - 2013-06-04
Organisations: EEE

Identifiers

Local EPrints ID: 353270
URI: http://eprints.soton.ac.uk/id/eprint/353270
ISBN: 978-1-4673-4739-6
PURE UUID: 9096edaa-b6ae-47a1-b27e-36d35764b9ca
ORCID for J A Pilgrim: ORCID iD orcid.org/0000-0002-2444-2116
ORCID for R C D Brown: ORCID iD orcid.org/0000-0003-0156-7087

Catalogue record

Date deposited: 03 Jun 2013 20:29
Last modified: 21 Nov 2021 02:57

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Contributors

Author: P S Amaro
Author: A F Holt
Author: M Facciotti
Author: J A Pilgrim ORCID iD
Author: P L Lewin
Author: R C D Brown ORCID iD
Author: G Wilson
Author: P N Jarman

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