基于磁通门的高精度数字磁场探测系统的研究与实现

Research and implementation of high precision digital magnetic field detection system based on fluxgate

文中针对电力系统接地网随着使用年限增加,因焊接、腐蚀等原因造成接地导线变细甚至断裂等问题,研究开发了基于磁通门的高精度数字磁场探测系统。该系统利用磁通门传感器对接地网磁场进行精确探测,通过对得到信号的后续处理查找到接地网导体断点,以及判断接地网的腐蚀程度。模拟实验结果说明,该系统在对接地网的磁场探测中具有较好的实用性及推广应用的价值,对节省探测成本和维护接地网安全均具有重要意义。

In this paper,a high-precision digital magnetic field detection system based on fluxgate is developed to solve the problems of grounding wire thinning or even breaking caused by welding,corrosion and other reasons as the service life of grounding grid increases.The system uses fluxgate sensor to detect the magnetic field of grounding grid accurately,and finds the conductor breakpoint of grounding grid and judges the corrosion degree of grounding grid through the subsequent processing of the received signal.The simulation results show that the system has good practicability and value of popularization and application in magnetic field detection of grounding grid.It is of great significance to save detection cost and maintain the safety of grounding grid.