Prony方法求解水平双层土壤等值电阻率  

Prony Method for Calculating Equal Resistivity of Two-layer Soil

作　　者：房连玉[1] 王世杰 陈葳 常树升[1] 张久福 

机构地区：[1]东北电力学院电力工程系,吉林吉林132012 [2]宁夏石嘴山供电局生技科,宁夏石嘴山753000 [3]吉林市电业局团委,吉林吉林132021 [4]黑龙江省汤原县供电局,黑龙江汤原154700

出　　处：《东北电力学院学报》2002年第4期38-40,共3页Journal of Northeast China Institute of Electric Power Engineering

摘　　要：求解水平双层土壤中的电场问题可利用经典镜象法 ,而经典镜象法需要无穷多个镜象来模拟这种电场问题 ,这给分析计算带来一定的困难。本文采用Prony方法 ,即采用任意函数的有限项指数级数Prony展开来定义镜象的大小和位置 ,从而替代经典镜象法中采用无限项Tailor级数展开方法。双层土壤中等值电阻率的计算结果表明 。The classic image method has been used in the calculation of electric field with two layer soil. However, an infintie number of images must be employed in the calculation of the field with two layer soil,which results in may difficulties. The prony method introduced in this paper can determine the amplitude and the location of images by prony's algorithm that develops a function into an exponential series with finite terms rather than Tailor's development with infinite terms employed in the classic image method. The calculating results of equal soil resistivity with two layer soil shows that prony method can be used to calculate electric field of multi layer media.

关 键 词：PRONY方法 水平双层土壤 等值电阻率 经典镜象 接地 

分 类 号：TM835.4[电气工程—高电压与绝缘技术] TM15