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. & 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 Science & Technology > Engineering |
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