新型传统Rogowski线圈的设计与研究  

Design and Research of New Traditional Rogowski Coil

作　　者：邸志刚 孙腾飞 贾春荣 DI Zhi-gang;SUN Teng-fei;JIA Chun-rong(North China University of Science and Technology,Tangshan 063210,China)

机构地区：[1]华北理工大学,电气工程学院,河北唐山063210

出　　处：《电力电子技术》2020年第3期36-39,共4页Power Electronics

基　　金：河北省高等学校科学技术研究项目(zd20131024)。

摘　　要：针对传统Rogowski线圈测量小电流存在的一些精度及灵敏度低等性能问题,提出一种具有高精度、高灵敏度结构的新型传统Rogowski线圈电流互感器。该互感器由一块印制电路板(PCB)和4个迷你版的传统Rogowski线圈组成。简单阐述了Rogowski线圈的基本工作原理,并对新线圈的结构与部件进行详细讲解。给出了新结构Rogowski线圈的互感系数、自感和电阻计算方法。通过Matlab软件分析线圈的幅频、相频特性,工频实验测试结果表明线圈具有良好的线性度,对小电流(100 A以下)测量的精度和灵敏度有较大提高,对进一步推广Rogowski线圈在电力系统中的应用具有重要意义。Aiming at the problems of low precision and sensitivity of traditional Rogowski coil in measuring small current,a new type of Rogowski coil current transformer with high precision and sensitivity structure is proposed.The coil consists of a printed circuit board(PCB) and four miniature versions of traditional Rogowski coils.The basic working principle of Rogowski coil is briefly described,and the structure and components of the coil are introduced in detail.The calculation methods of mutual inductance coefficient,self-inductance and resistance of Rogowski coil with new structure are given.The amplitude and phase frequency characteristics of the coil are analyzed by Matlab software.The experimental results of power frequency are in good agreement with the theoretical calculated values,and have good linearity.The accuracy and sensitivity of the measurement of small current(less than 100 A) are greatly improved.It is of great significance to further popularize the application of Rogowski coil in power system.

关 键 词：电流互感器 ROGOWSKI线圈 工作原理 

分 类 号：TM452[电气工程—电器]