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The Influence of Residue on Space Charge Accumulation in Purposely Modified Thick Plaque XLPE Sample for DC Application

The Influence of Residue on Space Charge Accumulation in Purposely Modified Thick Plaque XLPE Sample for DC Application
The Influence of Residue on Space Charge Accumulation in Purposely Modified Thick Plaque XLPE Sample for DC Application
Effects residues (cross-linking by-products and additives) in polyethylene on space charge accumulation and decay have been investigated using the pulsed electro-acoustic technique. Space charge profiles have shown a great variation both in the charge initiation during the voltage ramping-up process and during long term stressing and decay (volts off). Samples were subjected to different conditioning processes, resulting in different proportions of residues (fresh, 0.5% residue and thoroughly degassed). The results show that residual impurities, including the by-products of cross-linking, play a key role in the space charge accumulation in cross-linked polyethylene. On the removal of impurities by degassing, a small homocharge build up was found in the vicinity of the electrode. It is concluded that space charge accumulation is governed by the charge injection through dielectric/electrode interface when the sample is thoroughly degassed.
Space charge, Cross-linking by-products, XLPE and PEA
7-302-01581-3
CD-ROM
Fu, M
22d474b8-9c19-4ccb-9e64-6087ffe0941d
Chen, G
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Fothergill, J C
f9675969-e8e2-43b9-883f-b4b0fbf68582
Fu, M
22d474b8-9c19-4ccb-9e64-6087ffe0941d
Chen, G
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Fothergill, J C
f9675969-e8e2-43b9-883f-b4b0fbf68582

Fu, M, Chen, G and Fothergill, J C (2005) The Influence of Residue on Space Charge Accumulation in Purposely Modified Thick Plaque XLPE Sample for DC Application. 14th International Symposium on High Voltage Engineering, Beijing, China. 25 - 29 Aug 2005. CD-ROM .

Record type: Conference or Workshop Item (Paper)

Abstract

Effects residues (cross-linking by-products and additives) in polyethylene on space charge accumulation and decay have been investigated using the pulsed electro-acoustic technique. Space charge profiles have shown a great variation both in the charge initiation during the voltage ramping-up process and during long term stressing and decay (volts off). Samples were subjected to different conditioning processes, resulting in different proportions of residues (fresh, 0.5% residue and thoroughly degassed). The results show that residual impurities, including the by-products of cross-linking, play a key role in the space charge accumulation in cross-linked polyethylene. On the removal of impurities by degassing, a small homocharge build up was found in the vicinity of the electrode. It is concluded that space charge accumulation is governed by the charge injection through dielectric/electrode interface when the sample is thoroughly degassed.

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More information

Published date: 2005
Additional Information: Event Dates: August 25 - 29, 2005
Venue - Dates: 14th International Symposium on High Voltage Engineering, Beijing, China, 2005-08-25 - 2005-08-29
Keywords: Space charge, Cross-linking by-products, XLPE and PEA
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 261711
URI: http://eprints.soton.ac.uk/id/eprint/261711
ISBN: 7-302-01581-3
PURE UUID: bb92bdd0-2ee4-4303-bbd0-751f0321a76c

Catalogue record

Date deposited: 19 Dec 2005
Last modified: 14 Mar 2024 06:58

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Contributors

Author: M Fu
Author: G Chen
Author: J C Fothergill

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