多个垂直接地极间利用系数的试验及分析  

Experiment and Analysis of Utilization Coefficient Between Multiple Vertical Grounding Electrodes

作　　者：龚震 GONG Zhen

机构地区：[1]四川省送变电建设有限责任公司,四川成都610000

出　　处：《电力系统装备》2023年第10期14-16,共3页Electric Power System Equipment

摘　　要：在电力系统各种设计规范中,多个垂直接地极并列工作利用系数一般选用DL/T 5091—1999《水力发电厂接地设计技术导则》(以下称《导则》)之表7.2.3接地体的冲击利用系数。这些推荐值是否准确?如何适用?文章通过试验实测的方式进行了比较分析,结论为:实测推算与《导则》数据有一定差异。该差异需引起重视。In various design specifications for power systems,the utilization coefficient for parallel operation of multiple vertical grounding electrodes is generally selected from Table 7.2.3 of the Technical Guidelines for Grounding Design of Hydraulic Power Plants:DL/T 5091—1999(hereinafter referred to as the guidelines).Are these recommended values accurate?How is it applicable?The author conducted a preliminary comparative analysis through experimental measurement,and the conclusion is that there is a certain difference between the actual calculation and the data in the“Guidelines”.This difference needs to be taken seriously.

关 键 词：接地极 接地电阻 利用系数 

分 类 号：TM862[电气工程—高电压与绝缘技术]