接地系统计算中的若干问题  

Some Issues in Grounded System Calculation

作　　者：盛剑霓[1] 肖乐军[2] 林华谘[3] 

机构地区：[1]西安交通大学 [2]湖南大学 [3]武汉高压研究所

出　　处：《中国电机工程学报》1989年第2期19-26,共8页Proceedings of the CSEE

摘　　要：在交直流输配电系统中,接地电极的设计是一个比较重要的课题。涉及到接地电阻、最大场强和跨步电压等量的计算。在计算这些量时应考虑到地层的不均匀性。本文不用多次反射或格林函数的观点而用等站源的观点进行处理,所以本文的方法较已有的方法简单且适应性强。在等效源波及到无限远处的无界场的处理中,本文应用自适应技术。本文对用环状电极等效网状电极的处理进行了讨论,并指出应对不同的程序找出相应的最佳比例系数,以便减少计算误差。静电感应水平是设计高压输配电系统必须关心的问题,在传统的处理方法中,计算静电感应场强时认为地面是等位面,但当地面下存在电流场时,地面已不再是等位面,它对静电感应水平会有多大影响值得研究。本文提供了计及它影响的计算方法。In design of grounded electrodes, the factor of nonhomogeniousness of the earth was considered and calculated with the method of images or with Green Function,It is treated with the view of equivalent source in this paper- Present method is simple and easy to understand. Its adaptability is stronger.This paper discusses and points out that radii of the equivalent ring electrodes of mesh electrodes have to be determined one by one for diffrent calculation program.This paper also points out that the surface of the earth is not equipotential when the current field underneath is present. This fact may influence to the potential distribution above ground. The method for calculation of such kind of the electric field Is offered in this paper,

关 键 词：接地系统 计算 交直流输配电系统 

分 类 号：TM72[电气工程—电力系统及自动化]