Polarity effect and electromagnetic radiation of partial discharge accompanying growth of an electrical tree

被引：0

作者：

Power Transformation Construction work Department, Kanden Engineering Co., Inc., 3-1-176, Fukuzaki, Minato-ku, Osaka 552-0013, Japan ^{[1
]}

不详 ^{[2
]}

机构：

[1] Power Transformation Construction work Department, Kanden Engineering Co., Inc., Minato-ku, Osaka 552-0013, 3-1-176, Fukuzaki

[2] University of Hyogo, Himeji 671-2280

来源：

| 1600年 / Institute of Electrical Engineers of Japan卷 / 134期

关键词：

Cross-linked polyethylene; Electrical tree; Electro-magnetic waves; Epoxy resin; Partial discharge;

D O I：

10.1541/ieejfms.134.273

中图分类号：

学科分类号：

摘要：

We have investigated characteristics of radiated electromagnetic (EM) waves from positive and negative partial discharge (PD) in epoxy resin and cross-linked polyethylene. As a result, we found that there is correlation among EM level from PD, positive PD current and electrical tree. Therefore, growth of an electrical tree makes up a lot of positive PD. Also, we have investigated characteristics of frequency region of radiated EM waves from PD in air, insulating oil and liquid epoxy in addition to above insulators. EM waves were detected in the frequency region of 40-300 MHz from positive and negative PD in epoxy resin and cross-linked polyethylene. Also, EM waves were detected in the frequency region of 40 -150 MHz from positive and negative PD in air. And in the case of insulating oil and liquid epoxy, EM waves were detected in the frequency region of 40-150 MHz from positive PD, and 40-250 MHz from negative PD. Frequency region was different depending on materials or polarity of discharge. Results of the study, we considered that the cause is difference of the electric field strength at partial discharge occurring. © 2014 The Institute of Electrical Engineers of Japan.

引用

页码：273 / 278

页数：5

共 13 条

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