An assessment of the potential for oil flow damage in Kraft paper under normal operation and reclamation in a high voltage transformer
An assessment of the potential for oil flow damage in Kraft paper under normal operation and reclamation in a high voltage transformer
Thermal aging and ultraviolet (UV) irradiation are used as methods to prepare samples of kraft paper spanning its full lifecycle within a high-voltage transformer, from new to end of life. The mechanical break strain is correlated with the degree of polymerization (DP), representing a progressive deterioration of mechanical properties during aging. Subsequent exposure to oil flow mimicking both normal plant operation and reclamation activities shows that aged paper exposed to high rates of flow experiences noticeable surface roughening. Despite this, no measurable erosion occurs even after long-term temperature/flow cycling in used mineral oil containing a notable particulate content. This indicates that kraft paper is unlikely to be eroded by normal reclamation activities, even in a severely aged asset. This confirms the validity of using this approach to extend plant life.
Aging, DP, Kraft paper, Mechanical properties, Reclamation, kraft paper, degree of polymerization (DP), reclamation, mechanical properties
2050-2057
Hosier, Ian
6a44329e-b742-44de-afa7-073f80a78e26
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Wilson, Gordon
fd02d259-a5b6-44ce-be29-47073c552c5b
1 October 2022
Hosier, Ian
6a44329e-b742-44de-afa7-073f80a78e26
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Wilson, Gordon
fd02d259-a5b6-44ce-be29-47073c552c5b
Hosier, Ian, Lewin, Paul and Wilson, Gordon
(2022)
An assessment of the potential for oil flow damage in Kraft paper under normal operation and reclamation in a high voltage transformer.
IEEE Transactions on Dielectrics & Electrical Insulation, 29 (5), .
(doi:10.1109/TDEI.2022.3198752).
Abstract
Thermal aging and ultraviolet (UV) irradiation are used as methods to prepare samples of kraft paper spanning its full lifecycle within a high-voltage transformer, from new to end of life. The mechanical break strain is correlated with the degree of polymerization (DP), representing a progressive deterioration of mechanical properties during aging. Subsequent exposure to oil flow mimicking both normal plant operation and reclamation activities shows that aged paper exposed to high rates of flow experiences noticeable surface roughening. Despite this, no measurable erosion occurs even after long-term temperature/flow cycling in used mineral oil containing a notable particulate content. This indicates that kraft paper is unlikely to be eroded by normal reclamation activities, even in a severely aged asset. This confirms the validity of using this approach to extend plant life.
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TDEI3198752 (1)
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An_Assessment_of_the_Potential_for_Oil_Flow_Damage_in_Kraft_Paper_Under_Normal_Operation_and_Reclamation_in_a_High-Voltage_Transformer
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Accepted/In Press date: 18 July 2022
e-pub ahead of print date: 16 August 2022
Published date: 1 October 2022
Additional Information:
Publisher Copyright:
IEEE
Keywords:
Aging, DP, Kraft paper, Mechanical properties, Reclamation, kraft paper, degree of polymerization (DP), reclamation, mechanical properties
Identifiers
Local EPrints ID: 470015
URI: http://eprints.soton.ac.uk/id/eprint/470015
ISSN: 1070-9878
PURE UUID: 387e1eb4-baac-43e6-953a-79527548dd1e
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Date deposited: 30 Sep 2022 16:38
Last modified: 17 Mar 2024 02:58
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Contributors
Author:
Ian Hosier
Author:
Paul Lewin
Author:
Gordon Wilson
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