多极法测量杆塔接地电阻的研究

Study on Measuring Ground Resistance of Tower by Multi-electrode Method

针对输电线路杆塔周围常有障碍物,三级法测量其接地电阻不易较远距离布线的问题,提出了采用多极法测量杆塔接地电阻,应用CDEGS软件分别对三极法和多极法测量杆塔地网接地电阻建模仿真。仿真结果表明,多极法测量准确度较高,并可缩短电流极与接地电极间的距离。

Owing to existing obstacles around the power transmission line towers,the distance between current electrode and ground electrode can not be too long for measuring ground resistance with three-electrode method.In order to solve this problem,this paper proposes multi-electrode method to measure grounding resistance of the tower.The models of measuring ground resistance in tower ground network with three-electrode method and multi-electrode method are established by applying CDEGS software.The results of simulation show that the multi-electrode method can not only improve measuring accuracy but also shorten the distance between the current electrode and the ground electrode.