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


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. In, 14th International Symposium on High Voltage Engineering, Beijing, China, 25 - 29 Aug 2005. Tsinghua University Press, CD-ROM.

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Description/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.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Event Dates: August 25 - 29, 2005
ISBNs: 7302015813
Keywords: Space charge; Cross-linking by-products; XLPE and PEA
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science
Faculty of Physical Sciences and Engineering > Electronics and Computer Science > EEE
ePrint ID: 261711
Date Deposited: 19 Dec 2005
Last Modified: 27 Mar 2014 20:04
Publisher: Tsinghua University Press
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/261711

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