Error Analysis of Current Sensor Based on Fluxgate Sensor Array

With the development of non-contact online measurement in smart grid, AC/DC power supply, new energy, high-speed trains, intelligent buildings, and other fields, the performance requirements of current sensors are getting higher and higher. As a possible new idea, the magnetic sensor array current measurement method has theoretical advantages in accuracy, bandwidth, measurement range, anti-interference ability, and universality. The structure of the magnetic sensor array, measurement principle, and data processing method are introduced. Some factors that affect its measurement accuracy such as geomagnetism, wire position, and crosstalk. Simulation of the measured values under various interferences is carried out to observe its influence on the measured values. Using fluxgate sensor to make sensor array and test its measurement performance. This paper has reference value for understanding the current measurement method of the magnetic sensor array and improving the performance of the magnetic sensor.