脉冲磁场测量系统的研制和标定  

Development and Calibration of an Impulse Magnetic Field Measurement System

作　　者：任晓明[1,2] 傅正财[1] 黄晓虹[2] 孙伟[1] 

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200030 [2]上海市防雷中心,上海200030

出　　处：《上海交通大学学报》2010年第7期980-983,988,共5页Journal of Shanghai Jiaotong University

基　　金：上海市浦江人才计划资助项目(08PJ14316)

摘　　要：为了评估雷击建筑物或其附近室内的脉冲磁场水平,研制了一套由自制磁场探测线圈与光纤传输系统集成的脉冲磁场测量系统.光纤传输系统的灵敏度系数通过正弦波发生器进行标定.8/20μs冲击电流发生器输出端连接直径为0.3 m的单匝线圈组成磁场发生器,磁场探测线圈通过固定在单匝线圈的中心进行标定.试验结果表明,该系统能够有效地测量脉冲磁场,磁场探测线圈的B/U标定系数误差小于3%.In order to evaluate the impulse magnetic field distribution in buildings struck by lightning or nearby lightning strokes,a set of measuring system composed of self-made magnetic detecting coil and fiber transmitting system was developed. The sensitivity coefficient of the fiber transmitting system was calibrated by sine-wave generator.The output of an 8/20 μs current generator is connected with the single turn circular coil whose diameter is 0.3 m to compose the magnetic field generator.The detecting coil is fixed in the center of the single turn coil for calibration.The results show that the developed system can measure the impulse magnetic field effectively and the B/U calibrated coefficient error of the system is less than 3%.

关 键 词：探测线圈 光纤传输系统 脉冲磁场 磁场发生器 

分 类 号：TM867[电气工程—高电压与绝缘技术]