High field dissipation current waveform of polyethylene film obtained by new method
High field dissipation current waveform of polyethylene film obtained by new method
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新方法获得聚乙烯薄膜高场耗散电流波形
DOI：
10.1109/ceidp.2002.1048870
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
'. Numazu
中科院分区：
文献类型：
--
作者：
'. A.Tanaka;'. K.Tohyama;T. Tokoro;'. M.Kosaki;M. Nagaol;'. Numazu
非极性聚合物，如聚乙烯（PE）、聚丙烯（PP）等，广泛用作电力电缆和电容器的绝缘子。在交流高场区，由于电荷注入、空间电荷效应、复合等复杂的传导机制，电极的载流子注入逐渐占据主导地位，耗散电流波形形状开始呈现非线性特征。为了研究交流高场作用下的导通机理，提出了一种新的耗散电流波形观测方法，可以高精度地检测谐波。采用低密度聚乙烯（LDPE）薄膜，在室温至90/spl℃范围内进行了高场耗散电流波形观测。通过这一系列的实验，得到了在高温交流强场下空间电荷效应的非常独特的性质。
Non-polar polymers, such as polyethylene (PE), polypropylene (PP) and so on, are widely used as insulators for power cable and capacitor. In ac high field region, it is known that carrier injection from electrodes is getting dominant, and then the dissipation current waveform shape begins to show a nonlinear property due to complex conduction mechanism, that is, charge injection, space charge effect, recombination and so on. To study the conduction mechanism under ac high field, a new dissipation current waveform observation method which enables detection of the harmonies with high accuracy is developed. By using low density polyethylene (LDPE) film, high field dissipation current waveform observations from room temperature to 90/spl deg/C are carried out. Through these series of experiments, very unique properties which indicate the space charge effect under ac high field in high temperature are obtained.