Simulation of Magnetic Loop Optimization Strategy for TMR Current Sensor

With the frequent occurrence of insulator flashover events, the monitoring of insulator leakage current is becoming more and more important. However, there are still many shortcomings in the traditional state warning and monitoring in terms of accuracy, sensitivity and anti-interference. The detection system of insulator leakage current based on TMR sensor not only improves the accuracy and anti-interference of current signals, but also makes the detection process more convenient and saves manpower and material resources for inspection. However, since the magnetic focusing ring of TMR sensor is affected by the installation environment, structural size and material, this paper will carry out the simulation design research on the structural parameters and material of TMR sensor.