绝缘监测用高精度微电流传感器研究  

High precision current sensor based on compensation principle

作　　者：单平[1] 罗勇芬[1] 徐大可[2] 曹俊岭[2] 李彦明[1] 

机构地区：[1]西安交通大学,陕西西安710049 [2]国电南京自动化股份有限公司,江苏南京210003

出　　处：《电力自动化设备》2002年第11期4-6,共3页Electric Power Automation Equipment

摘　　要：一种用于绝缘在线监测的穿心式高精度微电流传感器。通过电子电路对激磁电流的跟踪和自动补偿,使传感器近似工作在“零磁通”状态。对传感器的性能测试表明,补偿收到了良好效果,角差稳定在±1.5分以内,比差小于千分之一。A kind of high precision cross-core low-current sensor for insulated on-line moni toring is developed.By tracking and automati cally compen sating the magnetizing current via electronic cir cuit,the sensor is working in nearly zero flux condition.The performance test of the current sen sor in di cates that the com pensation achieves satis factory effect.Its an gular difference is±1.5' and its relative scale difference is under one thousandth.

关 键 词：绝缘监测 高精度微电流传感器 零磁通 在线监测 

分 类 号：TM855[电气工程—高电压与绝缘技术] TP212[自动化与计算机技术—检测技术与自动化装置]