铁芯极限磁滞回线低压测试系统  

Low-Voltage Measuring System for Limiting Magnetic Hysteresis Loop of Iron Core

作　　者：崔恒志 蔡霁霖[2] 黄奇峰 王忠东 卢树峰 杨世海 周赣[2] 

机构地区：[1]江苏省电力公司电力科学研究院,南京211103 [2]东南大学电气工程学院,南京210096

出　　处：《电测与仪表》2013年第7期53-57,共5页Electrical Measurement & Instrumentation

摘　　要：铁芯极限磁滞回线是电力电流互感器仿真的基本参数,电力电流互感器的尺寸较大,直接测量需要高压励磁。为了能够在电气实验室中利用常用设备测量铁芯极限磁滞回线,文章研究一种铁芯极限磁滞回线的低压测试系统,详细提出了测试系统的结构、定制铁芯的设计流程、测试步骤及测试数据的处理方法。通过两组实验验证了该测试系统的可行性和先进性。实验结果表明,利用该系统能够在150V以下的低压以及10A以下的小电流条件下精确地测量铁芯材料的极限磁滞回线。Because the limiting magnetic hysteresis loop（LMHP）of iron core is a basic parameter for power current transformer（CT）simulation,and the size of power CT is usually large,the high-voltage condition is unavoidable for measuring LMHP of power CT straightly,this paper studies a low-voltage LMHP measuring system for the purpose of measuring the LMHP with common instruments in the electrical laboratory.The framework of the measuring system,the design flow of customized iron core,and the measuring steps and data handling method are presented in detail.Two groups of experiments have been carried out to verify the feasibility of this measuring system.The results of the experiments show that LMHP can be measured precisely using the proposed system in the condition that the voltage is below 150V and the current is below 10A.

关 键 词：铁芯 极限磁滞回线 低压 测试 

分 类 号：TM936[电气工程—电力电子与电力传动]