基于改进遗传算法的接地土壤结构分析

Analysis on Soil Structure for the Grounding Projects with Improved GA

利用等距四极法测得土壤视在电阻率和极间距的关系,并以测量视在电阻率与计算电阻率的差平方为基础,建立了目标函数。在求目标函数最优解的过程中,引进了遗传算法,将土壤反演成水平分层的结构。将计算结果与国际著名的接地软件包CDEGS相比较,得到了较好的吻合。

With the relationship between pole-to-pole distances and the apparent grounding resistance measured with the 4-pole method, and the variance between measured resistances and calculated ones, target function is established. The introduction of GA algorithm into optimization of the target function reverses a horizontal layer structure of the soil. Comparing with calculated results using the famous international software ware CDEGS, this method is proven to be correct and useful in calculation of grounding resistance.