边界元法数值计算接地参数的研究  

Numerical calculations of grounding parameters based on boundary element method

作　　者：黄文力[1] 李响[1] 王龙[1] HUANG Wenli;LI Xiang;WANG Long(School of Mechatronics Engineering,Zhengzhou University of Aeronautics,Zhengzhou 450046,China)

机构地区：[1]郑州航空工业管理学院机电工程学院,河南郑州450046

出　　处：《电力科学与工程》2018年第3期45-50,共6页Electric Power Science and Engineering

基　　金：河南省科技攻关资助项目(132102210484);河南省青年骨干教师资金资助项目(2013GGJS-141)

摘　　要：针对复杂土壤介质接地参数研究,深入分析了接地参数数值计算的边界元法,用分界面上的束缚电流等效替代不同介质对接地电阻的影响,开发出GPM(Grounding of Partitioned Model)接地数值计算软件包,讨论了不同接地参数改变时对接地性能的影响。指出接地装置的性能未必与接地导体的数量成正比,在有限的区域内,研究接地导体的优化布置将是降低接地电阻,减小接触电势和跨步电压的有效途径。In this paper,numerical calculations of grounding parameters based on boundary element method are studied in depth.The fictitious equivalent current on the interface of different soil media is used to represent for the effect of the different soil media on the value of the grounding resistance,and hence a software package GPM of grounding numerical calculation is developed.Furthermore,the effect of different grounding parameters on the grounding performances is discussed.It can be found that in a limited area,the grounding resistance does not decrease directly with proportion to the number of grounding conductors.Therefore,in this case the optimal layout of grounding conductors should be an effective way to reduce grounding resistance and decrease contact potential and step voltage as well.

关 键 词：边界元法 接地网 接地电阻 数值计算 

分 类 号：TM862[电气工程—高电压与绝缘技术]