摘要
M.M.A.Salama和 Y.L .Chow等人基于多重镜像原理及组合渐近线法所导出的两层土壤接地网电阻公式在一些情况下的计算误差较大 ,可达 2 0 %以上。为此 ,该文提出了改进的公式 ,与计算机数值方法比较 ,其计算误差通常都小于 10 %
The deviation,under certain conditions,in calculation for grounding resistance of a grounding grid within a two layer soil by the formula which was derived eceording to the multiple image principle and compositive asymptetic line solution by authors including M M A Salama and Y L Chow,may be up to more than 20%.Therefore,this paper recommends a revised formula,the obtained result therefrom,in comparison with the calculated value by computer,will deviate generally less than 10%
出处
《广西电力技术》
2001年第1期13-16,33,共5页
Guangxi Electric Power Technology
