应用CDEGS进行变电站接地网设计流程的研究  

Application of CDEGS in Substation Grounding Grid Design Process

作　　者：李伟 王伟 孙永春 丛远新 李松 王森 申巍 王旭明 LI Wei;WANG Wei;SUN Yongchun;CONG Yuanxin;LI Song;WANG Sen;SHEN Wei;WANG Xuming(Shaanxi Electric Power Research Institute of State Grid,Xi′an 710100,China;Beijing Jinheyi Technology&Development Co.,Ltd.,Beijing 100160,China;State Grid Shaanxi Electric Company,Xi′an 710100,China;College of Electrical Engineering,Xi′an Jiaotong University,Xi′an 710049,China)

机构地区：[1]国网陕西省电力公司电力科学研究院,西安710100 [2]北京市金合益科技发展有限公司,北京100160 [3]国网陕西省电力公司,西安710100 [4]西安交通大学电气工程学院,西安710049

出　　处：《电瓷避雷器》2022年第5期113-118,共6页Insulators and Surge Arresters

基　　金：国网陕西省电力公司科学技术项目(编号:5226KY180029)。

摘　　要：为了高效设计变电站接地网,提出一种应用CDEGS进行接地网设计的方法。通过实地测量待建变电站处的土壤电阻率参数,建立变电站实际运行的系统模型,充分考虑到变电站实际运行中最严重的线路运行单相接地短路故障电流入地情况,并将变电站出线架空地线的分流纳入考虑范围,以站内接触电压、跨步电压、地电位升等参数作为安全性指标对设计的接地网进行考核,设计得到两种可行的接地网设计方案,试验表明应用CDEGS进行接地网设计具有较强的可操作性,对各类设计人员而言,可以应用文中的接地网设计方法或者流程,对接地网进行设计,对于该行业从业人员的工作开展具有一定启示意义。In order to efficiently design substation grounding grid, a method of grounding grid design using CDEGS is proposed. Through the field measurement of soil resistivity parameters at the substation to be built, the system model of actual operation of the substation is established. The most serious single-phase grounding fault current entering the ground in the actual operation of the substation is fully considered, and the shunt current of the overhead ground wire of the substation outgoing line is also taken into account, and the contact voltage, step voltage, ground potential rise and other parameters in the substation are taken as safety factors. Two feasible grounding grid design schemes are obtained through the evaluation of the grounding grid design index. The test shows that the application of CDEGS in the design of grounding grid is feasible. For all kinds of designers, the grounding grid design method or process in this paper can be applied to design the grounding grid, which has certain enlightenment for the work of the industry practitioners significance.

关 键 词：CDEGS 变电站 接地网设计 接触电压 跨步电压 地电位升 

分 类 号：TM862[电气工程—高电压与绝缘技术] TM63