基于超高频技术的电力变压器局部放电在线检测研究  

Site Trials on UHF Partial Discharge Detection in Power Transformers

作　　者：陈金祥[1] 

机构地区：[1]国网福建省电力有限公司电力科学研究院,福建福州350007

出　　处：《电力与电工》2013年第3期23-25,44,共4页Electric Power and Electrical Engineering

摘　　要：通过现场安装、测试内置超高频探头并排除干扰,在线检测某220 kV启备变局部放电;利用相位统计谱图,分析局部放电的类型、性质及位置。In this paper,sensors operating in the ultra-high frequency( UHF) bandand installed through the oil valve,have been used to detect internal discharges during site testing of a 220 kV standby oil-filled transformer.We succeeded to detect the internal PD by means of installation of the sensors,testing and onsite anti-disturbance.Classical phase-resolved PD patterns were recorded alongside for analyzing the type,characteristics and location of PDs. It must be greatly instructive and helpful for on-line UHF PD detection in power transformers in the future.

关 键 词：电力变压器 局部放电 超高频 

分 类 号：TM855.1[电气工程—高电压与绝缘技术]