温度对交联聚乙烯绝缘电缆异常击穿现象的影响

Proceedings of the 3rd International Conference on Conduction and Breakdown in Solid Dielectrics Pub Date : 1989-07-03 DOI:10.1109/ICSD.1989.69225

T. Eish

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引用次数: 0

摘要

作者报告了交联聚乙烯绝缘电缆在交变(50hz)电压下浸入变压器油中，当油温升高时，其异常击穿的研究结果。研究证实交联聚乙烯绝缘电力电缆在交变电压作用下发生异常击穿，击穿电压随绝缘温度的升高而降低。当温度达到80℃时，击穿部位与高压电极的距离随着温度的升高而减小，超过80℃时，整个击穿为直接击穿;无异常故障发生。>

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Temperature influence on the anomalous breakdown phenomena in XLPE insulated cables

The author reports results of investigations of the anomalous breakdown in XLPE (cross-linked polyethylene) insulated cables immersed in transformer oil under alternating (50 Hz) voltage when the temperature of the oil is increased. The study confirms that anomalous breakdown occurs in XLPE insulated power cables subjected to alternating voltages and that the breakdown voltage decreases as the insulation temperature increases. The distance of breakdown site from the high-voltage electrode decreases with increasing temperature up to 80 degrees C. Above that value, the entire breakdown is of direct type; no anomalous breakdown occurs.<>

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Proceedings of the 3rd International Conference on Conduction and Breakdown in Solid Dielectrics

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