VHF钳型传感器在线检测110kV XLPE电缆局放  

Partial Discharges On-Line Detection of 110 kV XLPE Cables Using VHF Clamp Current Transducer

作　　者：韦斌[1] 王伟[1] 李成榕[1] 李信[1] 李华春 

机构地区：[1]华北电力大学电气工程学院,北京102206 [2]北京供电工程公司,北京100054

出　　处：《高电压技术》2004年第7期37-39,共3页High Voltage Engineering

摘　　要：基于电磁耦合法检测原理 ,研制了一套用于 110kV高压XLPE电缆局部放电在线检测的VHF宽频带 (3～ 6 0MHz)钳型电流传感器 ,它灵活方便、操作安全、抗干扰性强。试验表明以该传感器为测量单元的VHF检测系统检测性能良好 (灵敏度 <5 pC) ,优于传统的IEC6 0 2 70检测方法 ,适于高压XLPE电缆现场在线检测。Based on the theory of the electromagnetic coupling method, this paper designs a new kind of clamp current transducer, with band width from 3 MHz to 60 MHz. It is used on PD on-line detection of 110 kV XLPE cables. This current transducer can be used easily, safely with good immunity to electromagnetic interference. Tests prove that VHF detection system, which uses the current transducer as measurement unit, has a good characteristic of detection and is better than the traditional method. So this technique is suitable for on-line detection.

关 键 词：VHF宽频带钳型电流传感器 XLPE电缆 局部放电 在线检测 

分 类 号：TM855[电气工程—高电压与绝缘技术]