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Evaluation of the onset of space charge and electroluminescence as a marker for cross linked polyethylene ageing

Seeley, A., Fothergill, J., Dissado, L. A., Stevens, G. C., Montanari, G. C. and Laurent, C. (2001). Evaluation of the onset of space charge and electroluminescence as a marker for cross linked polyethylene ageing. Paper presented at the 4th International Conference on Electric Charges in Non Conductive Materials, 2 - 6 July 2001.

Abstract

The aim of the “ARTEMIS” project is to investigate the ageing mechanisms for cross-linked polyethylene under thermo-electrical stress and to identify ageing markers, which can be used to carry out diagnostic procedures. A carefully selected set of techniques which can give cross-correlated information on space charge phenomenology and material degradation were used to investigate specimens peeled from reference and aged cables. The paper shows that ageing induces a change in the density and depth of trapping levels, and an increase in the number and size of mesovoids. Interpretation of these results is discussed in terms of physico-chemical modifications, which can affect trap distribution and microstructure.

Publication Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Presidents's Portfolio
School of Mathematics, Computer Science & Engineering > Engineering > Electrical & Electronic Engineering
URI: http://openaccess.city.ac.uk/id/eprint/1354
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