基于航空瞬变电磁的接地网断点检测仿真研究

Simulation Research on Grounding Grid Breakpoint Detection Based on Airborne Transient Electromagnetic

文章对接地网断点检测方法进行了研究,提出一种基于航空瞬变电磁异常环原理的接地网断点诊断方法,此方法忽略构成接地网导体的宽度和厚度,将接地网格当成异常线圈进行处理。通过定义有效检测面积,可以实现有目的性的探测,解决了之前方法盲目性大的缺点,并且可以直接由接收线圈接收到的二次感应电压值的规律进行断点判断,通过仿真验证了这个方法的有效性。

This paper studies the grounding grid breakpoint detection method,and proposes a grounding grid breakpoint diagnosis method based on the principle of airborne transient electromagnetic abnormal coils.This method ignores the width and thickness of the conductors constituting the grounding grid,and processes the grounding grid as an abnormal coil.By defining the effective detection area,this method can realize purposeful detection,solve the disadvantage of blindness of the previous method,and it can directly judge the breakpoint from the law of the secondary induced voltage value received by the receiving coil.The effectiveness of this method is verified by simulation.