雷电流测量用大型Rogowski线圈输出波形振荡现象分析  

Output waveform oscillation of large Rogowski coil used for lightning current measurement

作　　者：周璧华[1] 朱凯鄂[1] 李炎新[1] 郭建明[1] 

机构地区：[1]解放军理工大学工程兵工程学院,江苏南京210007

出　　处：《电波科学学报》2010年第6期1085-1089,共5页Chinese Journal of Radio Science

基　　金：国家自然科学基金资助项目(60971063)

摘　　要：针对大型Rogowski线圈输出波形的振荡现象,在讨论自积分Rogowski线圈工作原理的基础上,建立模型分析了Rogowski线圈的频率响应特性以及振荡产生的主要原因。分析结果表明:线圈的屏蔽层与线圈间、线圈匝间存在的分布电容导致了输出波形的振荡。实验证实,减小该分布电容可使振荡明显变小,从而为改进柔性大型Rogowski线圈的屏蔽设计提供了依据。The working principle of large self-integrating Rogowski coil is discussed.A model is built to analyze the frequency response characteristics of the coil and the main reason of the oscillation of output waveform.Analysis of the model shows that the distributed capacitance between the outer metal shielding layer and the inner winding,the turn-to-turn capacity causes the oscillation of the output waveform.An experiment is designed and it verifys that decreasing the distributed capacitance can lower the oscillation,thus it provides guidelines for designing the shield of large flexible Rogowski coil.

关 键 词：ROGOWSKI线圈 自积分 分布电容 振荡 

分 类 号：TM835[电气工程—高电压与绝缘技术]