输电线路杆塔接地装置的磁感应分析

Analysis on thegrounding device of the transmission line tower using transient electromagnetic

用磁感应的方法定位了输电线路杆塔接地装置的接地导体位置。计算垂直方向的磁场强度,分析了一种典型接地装置的磁场响应特征,形成了接地装置探测区域的场值图。感应磁场的等值线图清晰表现出接地装置的形态,以及形成闭合回路的地网和辐射接地体所表现出的磁场差异。仿真结果表明,该方法能清晰判断接地体的位置和走向。

A locating method for grounding conductors of the transmission line tower grounding device is introduced using the measured magnetic induction.The magnetic field response characteristics of a typical grounding device of the transmission line tower are analyzed using the calculated magnetic field strength in the vertical direction,the field imaging of the grounding device in the detection area is shown.The contour plot of the induced magnetic field clearly shows the shape of the grounding device,the difference in magnetic field between the closed loop grounded grids and the radiated grounding body is exhibited.The simulation results show that the presented method can determine the position and orientation of the grounding conductors of the transmission line tower clearly.