LIMM study of space charge in crosslinked polyethylene
Electric field-space charge profiles obtained using the laser-intensity-modulation-method (LIMM) are presented for XLPE samples extracted from power cable insulation cross-linked using dicumyl peroxide. The samples, 110 /spl mu/m thick with vacuum-evaporated aluminium electrodes, were subjected to d...
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Published in | 2005 12th International Symposium on Electrets pp. 196 - 199 |
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Main Authors | , , |
Format | Conference Proceeding |
Language | English |
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IEEE
2005
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Abstract | Electric field-space charge profiles obtained using the laser-intensity-modulation-method (LIMM) are presented for XLPE samples extracted from power cable insulation cross-linked using dicumyl peroxide. The samples, 110 /spl mu/m thick with vacuum-evaporated aluminium electrodes, were subjected to dc fields of 48 kV/mm and both polarities at room temperature for at least 24 hr. The LIMM measurements were made at room temperature, and at various times after the end of poling. Electric field and space charge profiles obtained using the scale-transformation and polynomial regularization methods were in fair quantitative agreement, except occasionally near the electrodes. Most of the space charge was concentrated near the electrodes, with densities of order 5-10 C m/sup -3/ in those regions. Charge of the same sign tended to accumulate adjacent to a given physical electrode, for both poling polarities. |
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AbstractList | Electric field-space charge profiles obtained using the laser-intensity-modulation-method (LIMM) are presented for XLPE samples extracted from power cable insulation cross-linked using dicumyl peroxide. The samples, 110 /spl mu/m thick with vacuum-evaporated aluminium electrodes, were subjected to dc fields of 48 kV/mm and both polarities at room temperature for at least 24 hr. The LIMM measurements were made at room temperature, and at various times after the end of poling. Electric field and space charge profiles obtained using the scale-transformation and polynomial regularization methods were in fair quantitative agreement, except occasionally near the electrodes. Most of the space charge was concentrated near the electrodes, with densities of order 5-10 C m/sup -3/ in those regions. Charge of the same sign tended to accumulate adjacent to a given physical electrode, for both poling polarities. |
Author | Fleming, R.J. Lang, S.B. Pawlowski, T. |
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Snippet | Electric field-space charge profiles obtained using the laser-intensity-modulation-method (LIMM) are presented for XLPE samples extracted from power cable... |
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SubjectTerms | Aluminum Annealing Cable insulation Cables Electrodes Polyethylene Power lasers Power transmission Space charge Spatial resolution |
Title | LIMM study of space charge in crosslinked polyethylene |
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