500kV地下变电站超深型复合接地网接地电阻的计算和瞬态特性研究  

Grounding Resistance Computation for Extra Deep Compound Grounding Grid in 500kV Underground Substation and Its Transient Characteristics

作　　者：崔鹏程 

机构地区：[1]上海超高压输变电公司,上海200063

出　　处：《华东电力》2011年第6期923-926,共4页East China Electric Power

摘　　要：介绍了上海市中心区域500 kV静安全地下变电站的地网埋设情况,根据地网简化计算模型得出了地网的简化计算值。最后,对此复合地网进行瞬态特性的分析,应用CDEGS软件计算了在大短路接地电流情况下主接地网和等电位接地网的瞬态电位分布,得出瞬态电位分布对保护和自动化等设备的影响。This paper presents the grounding grid in 500kV underground substation buried in downtown area of Shanghai.Based on the simplified model,the value of the grounding grid is calculated.For the transient characteristics analysis of the compound grounding grid,CDEGS software is applied to calculate the transient potential distribution in the main grounding grid and equipotential grounding grid in case of huge grounding current short circuit,and to analyze its impact on protection and automation equipments.

关 键 词：复合接地网 接地电阻 瞬态分析 电磁干扰 

分 类 号：TM86[电气工程—高电压与绝缘技术]