测控技术2024，Vol.43Issue(12)：31-37,7.DOI:10.19708/j.ckjs.2024.08.254
邻相电流对TMR传感器阵列测量精度的影响研究
Research on Influence of Adjacent Phase Currents on Measurement Accuracy of TMR Sensor Arrays
摘要
Abstract
In order to calculate the influence of adjacent phase currents on the accuracy of current sensors,based on the principle of current measurement by tunnel magnetoresistance(TMR)elements,an analytical ex-pression for the test conductors sensor arrays measurement error caused by adjacent phase currents in a three-phase alternating current system is proposed.Then,in the case of a three-phase current with an amplitude of 6 000 A,the influence of different factors on the measurement accuracy of the current sensors of the conductors to be tested is analyzed by analytical method and magnetic field finite element simulation.The results show that the proposed analytical expression can calculate the measurement error caused by adjacent phase currents more accurately.With the alternating current high-current scenarios,the TMR arrays are designed to mutually correct the measured current with at least 10 sensors,and the research provides theorical basis for the design and ap-plication of current sensor arrays for three-phase conductors in alternating current systems.关键词
隧道磁阻/电流传感器/邻相干扰/圆形阵列/邻相误差分析Key words
TMR/current sensor/adjacent phase interference/circular arrays/analysis of adjacent phase error分类
动力与电气工程引用本文复制引用
牛晓晨,黄杰,肖春,杨晓霞,何镇,王陈博..邻相电流对TMR传感器阵列测量精度的影响研究[J].测控技术,2024,43(12):31-37,7.基金项目
国家电网有限公司总部管理科技项目(5700-202258362A-2-0-HW) （5700-202258362A-2-0-HW）
