摘要
为达到降低接地网的最大接触电压之目的,研究了接地体数量在一定条件下的接地网最优布置方式。通过分析接地网导体最优分布时相邻导体间距占整个接地网边长的百分比,提出了按照高斯函数分布方式布置接地网导体的方法,即从接地网的边角网孔到中心网孔,相邻接地体间距占边长的百分数按照高斯函数分布。与按照指数方式分布的导体不等间距接地网相比,最大接触电压可降低约10%。采用该研究提出的方法,可以在使用较少数量接地体的条件下设计出满足接触电压要求的接地网。按照高斯函数布置接地网的方法是在土壤均匀分布的条件下得到,接地网在多层土壤中的最优布置方式可以按照类似该研究的分析方法得到。
In order to decrease the maximum touch voltage,the layout of the grounding conductors was studied when the total length of grounding conductor was not changed.By analyzing the percentage of the conductor spaces in optimal layout,the Gaussian function distribution of grounding conductors was proposed.The Gaussian function layout method of grounding conductors was that the conductor spaces of grounding grid from edge to center were obtained from Gaussian function.Compared with the optimal compression ratio distribution,the maximum touch voltage was decreased by ten percent.The Gaussian function distribution of conductors could meet the basic requirements of safety and the minimal cost.Results were obtained under the condition of uniform soil,and the optimal layout of grounding grid conductors in multi-layer soil could be obtained by the similar method.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2011年第9期2315-2320,共6页
High Voltage Engineering
基金
铁道部科技研究基金(编号略)~~
关键词
接地网
不等间距
接触电压
接地电阻
高斯函数
数值计算
grounding grid
unequally spaced
touch voltage
grounding resistance
Gaussian function
numerical calculation
