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首页> 外文会议>Electrical Insulation Conference and Electrical Manufacturing Expo, 2005. Proceedings >Fractal analysis of discharge current on polybutylene terephthalate
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Fractal analysis of discharge current on polybutylene terephthalate

机译：聚对苯二甲酸丁二酯放电电流的分形分析

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In this paper, an artificial atmospheric chamber was set up to investigate the fractal characteristic of discharge currents on polybutylene terephthalate under a reduced pressure. The decompression chamber was made from a glass cylinder with two sheets of acrylic board for the cover and the bottom. The test equipment was placed in the chamber, and the pressure was reduced from 100 kPa to 1 kPa by using a rotary pump. The experiment was carried out on the sample surface by a DC pulse voltage applied between a plate electrode and a needle electrode. The distance between the two electrodes was 6 mm. The frequency of applied pulse voltage ranged from 100 Hz to 250 Hz. The effects of atmospheric pressure and the frequency of applied voltage on the discharge currents have been studied. The fractal theory is used to analyze the discharge characteristics. The fractal dimension of discharge currents increases inversely with decreasing the atmospheric pressure and decreases with increasing the frequency of applied voltage. It is suggested that the fractal dimension can be used to analyze the insulation degradation of polybutylene terephthalate.
机译：本文建立了一个人工大气室，以研究在减压条件下聚对苯二甲酸丁二醇酯上放电电流的分形特征。减压腔是由玻璃圆柱体制成的，其盖子和底部由两片丙烯酸板制成。将测试设备放置在腔室中，并通过使用旋转泵将压力从100 kPa降低至1 kPa。通过在板状电极和针状电极之间施加直流脉冲电压在样品表面上进行实验。两个电极之间的距离为6毫米。施加的脉冲电压的频率范围为100 Hz至250 Hz。研究了大气压和施加电压的频率对放电电流的影响。分形理论用于分析放电特性。放电电流的分形维数与大气压的降低成反比，而与外加电压的频率成反比。建议使用分形维数来分析聚对苯二甲酸丁二酯的绝缘降解。

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