Space charge characteristics in cross-linking polyethylene under electrical stress from dc to power frequency

被引：30
|
作者：
Wang, X [1 ]
Yoshimura, N
Tanaka, Y
Murata, K
Takada, T
机构：
[1] Akita Univ, Dept Elect & Elect Engn, Akita 010, Japan
[2] Musashi Inst Technol, Elect Measurement Lab, Tokyo 158, Japan
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 1998年 / 31卷 / 16期
关键词：
D O I：
10.1088/0022-3727/31/16/016
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The space charge characteristics in cross-linking polyethylene (XLPE) are investigated under various electrical stresses from de to power frequency. The pulsed electro-acoustic method is improved to meet the needs of measurement under ac voltages. The frequency and phase angle dependences of the space charge are studied by means of phase-locking and frequency-converting techniques. Test results show that space charge can develop and accumulate in XLPE under an ultralow frequency voltage. The critical frequency of the applied ac voltage is less than 0.02 Hz. The mechanism of the formation of space charge in XLPE under an ac voltage is discussed through degassing of a sample in vacuum.
引用
收藏
页码：2057 / 2064
页数：8
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