电磁式电流互感器运行状态评价应用研究  

Research Based on Applicable State Assessment for Electro-Magnetic Current Transformers

作　　者：韦家旗[1] 唐菁 

机构地区：[1]柳州供电局营销部,广西柳州545005 [2]成都供电局电能计量中心,成都610021

出　　处：《电测与仪表》2010年第1期51-54,共4页Electrical Measurement & Instrumentation

摘　　要：介绍了当前电磁式电流互感器带电运行状态检测的技术现状,比较分析了电流互感器带电工作模型,重点描述了阻抗测试法在带电状态评价中的技术原理和应用特点,提出了励磁阻抗逼近算法。实验数据证明,该算法比直接近似励磁阻抗更加有效。This paper unfolds status-quo of state inspecting for active current transformers, then analyzes operation model of current transformer, with a focus being placed on principle and application characteristics of impedance test method in the operation conditions. Finally, it presents an approximate arithmetic for calculating exciting magnetic impedance. Data from experiments approves that the method is better than direct calculating method.

关 键 词：电磁式电流互感器 状态检测 阻抗 励磁 

分 类 号：TM933[电气工程—电力电子与电力传动]