Measurement of charge distributions in insulating materials for high voltage cables
Evolutions in time of charge distributions in thick dielectric insulators such as those used in high-voltage DC insulation are investigated. The pressure wave propagation (PWP) method has been applied to low-density, high-density, and cross-linked polyethylene under electric stress. It is shown that...
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Published in | Proceedings., Second International Conference on Properties and Applications of Dielectric Materials pp. 434 - 437 vol.2 |
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Main Authors | , , |
Format | Conference Proceeding |
Language | English |
Published |
IEEE
1988
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Subjects | |
Online Access | Get full text |
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Summary: | Evolutions in time of charge distributions in thick dielectric insulators such as those used in high-voltage DC insulation are investigated. The pressure wave propagation (PWP) method has been applied to low-density, high-density, and cross-linked polyethylene under electric stress. It is shown that the impurities contained in carbon-loaded polyethylene electrodes play a very significant role in the development of a space charge distribution within the insulator. It is suggested that, by studying the evolution of the charge distributions, it is possible to determine whether a stabilization occurs and how much time is required to reach this stabilization, depending on the temperature and the applied voltage. Consequently, such a measurement made on samples having the same structure as the cables will help in defining tests and standard procedures for equipment evaluation.< > |
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DOI: | 10.1109/ICPADM.1988.38427 |