用UHF法检测电力变压器局部放电的研究  

Research on PD Detection in Power Transformers Using UHF

作　　者：王伟[1,1] 唐志国[1] 李成榕[1] 黄兴泉[2] 李信[1] 王伟 

机构地区：[1]华北电力大学电力工程系,北京102206 [2]河南电力试验研究所,郑州450052

出　　处：《高电压技术》2003年第10期32-34,共3页High Voltage Engineering

摘　　要：基于 UHF的电力变压器局部放电检测法 ,在实验完成了 5种模型局部放电试验研究后 ,设计并投运了一套适用于现场的 UHF局部放电在线检测系统。试验表明 ,由于油箱外壳的屏蔽作用 ,箱内安装的In this paper, a measuring system for partial discharge(PD) detection of power transformers using UHF techniques has been designed, and the feasibilities of this technique is proved based on the testing results of laboratory experiment. Moreover, a specially designed UHF equipment for field PD monitoring has been put into site-testing on a in-service 120 MVA/220 kV power transformer in Huazhong, the test results indicate that electromagnetic noise level inside the transformer oil tank is apparently lower than the outer environment, and UHF monitoring system is very sensitive to PD detections. Further researches are in planning.

关 键 词：电力变压器 局部放电 UHF法 检测 

分 类 号：TM41[电气工程—电器]