An ultrasonic on-line test method for detecting remotely and automatically energised porcelain post insulators in high-voltage substations

被引：3

作者：

Yang Enhui ^{[1
]}

Deng Qi

Mo Jinqiu

Liang Qinghua

Wang Shigang ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China

来源：

INSIGHT | 2008年 / 50卷 / 04期

关键词：

ceramic/porcelain post insulator; ultrasonic on-line inspection; remote live-line automatic detection; crack; small angle probe; insulation and electromagnetic compatibility; HV substation;

D O I：

10.1784/insi.2008.50.4.209

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The fracture of ceramic post insulators in substations is a very important factor which disturbs the normal working of high-voltage (HV) substations. Every year there are some serious grid accidents caused by the fracture of ceramic post insulators in some countries. The fracture is usually caused by the propagation of the crack. Therefore, in this paper, an ultrasonic on-line test method for inspecting automatically the internal crack of the energised porcelain post insulator at 220kV substations is introduced to prevent the fracture. The correlative ultrasonic detection technology of the energised ceramic post insulators is investigated. Furthermore, an inspection mechanism and robotised inspection system with good insulation safety property and electromagnetic compatibility (EMC) performance are designed. The experimental results show that, even in the high-voltage and strong magnetic field circumstance in substations, the live-line remote inspection of energised porcelain post insulators can be accomplished safely, conveniently, steadily, reliably and effectively with this method.

引用

页码：209 / 215

页数：7

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