任意形状接地网最大接触电位差的计算  

Calculation on the Maximum Potential Difference of Grounding Network of Random Shape

作　　者：王洪泽 

机构地区：[1]广西电力工业局,南宁市530023

出　　处：《电力建设》2001年第4期29-32,共4页Electric Power Construction

摘　　要：电力行业标准DL/T6 2 1- 1997《交流电气装置的接地》推荐的方孔接地网最大接触电位差公式 ,仅适用于正方形接地网。公式 (5 )引入“修正系数K”后 ,解决了矩形接地网的最大接触电位差计算 ,更重要的是通过等值矩形变换 ,解决了任意形状接地网的最大接触电位差计算。其误差通常小于 10 % ,它比B .Thapar方法更具有通用性。The formula for the maximum contact potential difference in square hole grounding network recommended in “Grounding of AC electric apparatus”,power enterprise standard,DL/T621-1997,can only be used for square-shaped grounding network.formula(5) introduces the “correction factor K ”to solve the calculation of the maximum potential difference in rectangular grounding network.More importance is to solve the calculation of the maximum potential difference of optional shape grounding networks through conversion of equivalent rectangular shapes,whose error is normally less than 10%,which has more versatility than B.Thapar method. [

关 键 词：任意形状接地网 等值矩形变换 最大接触电位差 计算公式 

分 类 号：TM862[电气工程—高电压与绝缘技术]