A study on breakdown phenomenon identification of polymer films

Proceedings Electrical Insulation Conference and Electrical Manufacturing Expo, 2005. Pub Date : 1900-01-01 DOI:10.1109/EEIC.2005.1566285

B. Du, Yong Liu, H.J. Liu

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Abstract

The process of leading to breakdown of low-density polyethylene (LDPE) film and high-density polyethylene (HDPE) film was investigated, with particular attention on the breakdown phenomenon identification. From the pictures of breakdown point obtained by a monocular video zoom microscope, it can be observed that the shape of breakdown area was almost identical to the type of electrodes. Meanwhile, the mathematical statistics were used to analyze the obtained results. The study revealed that the DC breakdown voltage of HDPE was higher than that of LDPE. The breakdown diameter and area of HDPE was bigger than that of LDPE. To the needle-plane electrode, the diameter and area of breakdown point with the polymer film at the plane electrode was bigger than that at the needle electrode, and that at the middle of gap distance was between them. To the sphere-plane electrode, the diameter and area of breakdown point with the polymer film at the sphere electrode was bigger than that at the plane electrode, and that at the middle of gap distance was between them

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聚合物薄膜击穿现象识别的研究

研究了低密度聚乙烯(LDPE)薄膜和高密度聚乙烯(HDPE)薄膜的击穿过程，重点研究了击穿现象的识别。从单目视频变焦显微镜获得的击穿点图像可以观察到，击穿区域的形状与电极的类型几乎相同。同时，对所得结果进行数理统计分析。研究表明，HDPE的直流击穿电压高于LDPE。HDPE的击穿直径和击穿面积均大于LDPE。对于针-平面电极，聚合物膜在平面电极处的击穿点直径和击穿点面积大于在针电极处的击穿点直径和击穿点面积，两者之间的间隙距离中间处的击穿点直径和击穿点面积较大。对于球-平面电极，聚合物膜在球电极处击穿点直径和击穿点面积均大于在平面电极处，且两者间隙距离中间处击穿点直径和击穿点面积较大

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Proceedings Electrical Insulation Conference and Electrical Manufacturing Expo, 2005.

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