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Influence of fluorination time on surface flashover of epoxy in insulating gas

Influence of fluorination time on surface flashover of epoxy in insulating gas
Influence of fluorination time on surface flashover of epoxy in insulating gas
The accumulation of charges on polymeric insulation under high voltage DC stress is a major concern in the transmission system as its formation distorts the local electric field and has an adverse impact on the electrical performance. By undergoing fluorination treatment on the insulation, improved surface properties similar to fluoropolymers can be attained without changing the bulk properties of the original material. The change in chemical components at the surface of polymeric insulation should lead to a corresponding change in electrical properties at the surface and thus can suppress charge build up. Previous research on surface flashover on fluorinated epoxy resin at atmospheric condition shows a significant improvement in flashover strength. In this paper, the authors investigated the effect of different degree of fluorination treatment on cast epoxy resin on suppressing surface charge accumulation and its contribution towards the improvement in surface breakdown strength. In comparison to previous research, it has been found that there is an optimum time duration of fluorination treatment which improves the surface breakdown strength of epoxy spacer. The mechanisms that govern the effect of fluorination treatment on surface flashover were discussed.
fluorination, epoxy resins, flashover, EDX, nitrogen
978-1-4799-7354-5
384-387
Mohamad, A.
da455387-212f-44a7-95a5-69f694227ebb
Chen, G.
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Du, B.X.
af9ea7a2-7ceb-4de1-b17b-61c7b5590309
Mohamad, A.
da455387-212f-44a7-95a5-69f694227ebb
Chen, G.
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Du, B.X.
af9ea7a2-7ceb-4de1-b17b-61c7b5590309

Mohamad, A., Chen, G. and Du, B.X. (2015) Influence of fluorination time on surface flashover of epoxy in insulating gas. 2015 IEEE Electrical Insulation Conference (EIC), United States. 07 - 10 Jun 2015. pp. 384-387 .

Record type: Conference or Workshop Item (Paper)

Abstract

The accumulation of charges on polymeric insulation under high voltage DC stress is a major concern in the transmission system as its formation distorts the local electric field and has an adverse impact on the electrical performance. By undergoing fluorination treatment on the insulation, improved surface properties similar to fluoropolymers can be attained without changing the bulk properties of the original material. The change in chemical components at the surface of polymeric insulation should lead to a corresponding change in electrical properties at the surface and thus can suppress charge build up. Previous research on surface flashover on fluorinated epoxy resin at atmospheric condition shows a significant improvement in flashover strength. In this paper, the authors investigated the effect of different degree of fluorination treatment on cast epoxy resin on suppressing surface charge accumulation and its contribution towards the improvement in surface breakdown strength. In comparison to previous research, it has been found that there is an optimum time duration of fluorination treatment which improves the surface breakdown strength of epoxy spacer. The mechanisms that govern the effect of fluorination treatment on surface flashover were discussed.

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Published date: 7 June 2015
Venue - Dates: 2015 IEEE Electrical Insulation Conference (EIC), United States, 2015-06-07 - 2015-06-10
Keywords: fluorination, epoxy resins, flashover, EDX, nitrogen
Organisations: EEE

Identifiers

Local EPrints ID: 378091
URI: http://eprints.soton.ac.uk/id/eprint/378091
ISBN: 978-1-4799-7354-5
PURE UUID: c28919cb-11e2-47da-983d-ca21c823dc5e

Catalogue record

Date deposited: 16 Jun 2015 11:13
Last modified: 09 Dec 2019 19:52

Export record

Contributors

Author: A. Mohamad
Author: G. Chen
Author: B.X. Du

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