接地网接地电阻测量新方法的研究

电位降法是接地网接地电阻的测量的基本方法,但是对某些地理环境比较特殊的接地网,采用电位降法将遇到很大的困难.针对此问题,在现有接地电阻测量的基础上,提出一种新的接地网接地电阻测量方法.该方法放线距离短、易于实现,采用修正方程式修正测量结果的方法,降低了误差.最后通过分析现场试验的结果,验证了该方法的可行性,并总结了该方法的应用条件.

Research on New Measuring Method to the Earth Resistance of Grounding

Fall-of-potential method is a basic method to measure the earth resistance of grounding network, but it will encounter great difficulties when the geographical environment at the grounding network is very unusual. This paper proposes a new earth resistance measuring method based on current earth resistance measuring methods. The method doesn't need a long wire laying, thus it is easy to be realized. The adopted correction equations can amend the measured results and reduce errors. The feasibility of this method is verified by analysis of the field test results, and the application conditions of the method are summarized.