Fu, M, Chen, G and Fothergill, J C
The Influence of Residue on Space Charge Accumulation in Purposely Modified Thick Plaque XLPE Sample for DC Application
At 14th International Symposium on High Voltage Engineering, China.
25 - 29 Aug 2005.
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.
Conference or Workshop Item
||Event Dates: August 25 - 29, 2005
|Venue - Dates:
||14th International Symposium on High Voltage Engineering, China, 2005-08-25 - 2005-08-29
||Space charge, Cross-linking by-products, XLPE and PEA
||Electronics & Computer Science, EEE
||19 Dec 2005
||17 Apr 2017 21:54
|Further Information:||Google Scholar|
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