新型大电流测量系统研究  

Study of a new system for large current measurement

作　　者：赵军良[1] 关荣锋[1] 何斌[2] 乔松[2] 

机构地区：[1]河南理工大学,河南焦作454010 [2]中国矿业大学,北京100083

出　　处：《焦作工学院学报》2004年第5期415-418,共4页Journal of Jiaozuo Institute of Technology(Natural Science)

基　　金：河南省科技攻关项目(961170300).

摘　　要：论述了利用法拉第效应进行光测大电流的原理,根据琼斯矩阵法推出了光测大电流公式.介绍了作者设计的光测大电流测量系统,进行了模拟实验,给出了实验结果.然后对测量系统的误差进行了全面系统地分析.研究表明,这种测量系统与传统测量方法相比具有绝缘性能好、抗电磁干扰、动态范围大、测量精度高等优点,因此有望应用于未来的电力系统中测量大电流.The principle of optical system for measuring large electric current by utilizing Faraday magneto-optical effect is stated. With the method of Jones matrix, formula for measuring large current is derived. An optical system for measuring large current is presented. In addition, laboratory tests have been done and the experiment result is given. The error of the measuring system is discussed comprehensively and systematically. The study shows that this measuring system has many advantages over traditional method, such as good electric isolation, immunity to electromagnetic interference, widely dynamic range and high accuracy. Therefore, it is expected to be used for measuring large current in electric systems in the future.

关 键 词：大电流测量 光测 电力系统 绝缘性能 琼斯矩阵法 抗电磁干扰 法拉第效应 动态范围 优点 原理 

分 类 号：TD724[矿业工程—矿井通风与安全] TM835.2[电气工程—高电压与绝缘技术]