接地模块降阻特性的现场实验与仿真建模

Field Test on the Reducing Resistance Natural of Grounding Module and Building of Its Simulation Model

在目前的接地工程中,如何将接地电阻降至安全限值以下依然是主要技术难题之一。近年来人们开始采用接地模块作为接地体来解决接地降阻难题,但对于接地模块的各方面性能还缺乏较为科学的分析,因而在使用中存在着一些盲目性。为此,通过现场实验测量与仿真模型计算,对渗透型、非渗透型两类接地模块的综合性能进行了分析。依据半年内的实验测量结果研究其降阻特性,经过开挖检查了解其腐蚀情况,并利用有限元工具AN-SYS以及接地分析软件CDEGS建立仿真模型,估算接地模块对不同接地网的降阻效果,为工程应用提供参考。

In grounding engineering,it remains a technical problem to reduce resistance to the safety limit.Recently,grounding modules are used to solve the problem,but the lack of scientific analysis on the characteristics makes it to be blindly used in some situations.Consequently,we analyzed the permeability and non-permeability of grounding modules by field testing and simulation.Based on results in half a year,the reducing resistance characteristics were discussed by data measured,the corrosion characteristics were revealed by excavation inspection,and simulation models were built with ANSYS（finite element software） and CDEGS（software for grounding analysis）,finally the efficiency of reducing the resistance of different grids was calculated.