大型接地网内部接地电阻测量探讨  

Discussion on Grounding Resistance Measuring Inside Large Network

作　　者：余振邦 陈妍 YU Zhenbang;CHEN Yan(Haixi Meteorological Bureau,Qinghai Key Laboratory for Disaster Prevention and Mitigation,Haixi 817000,China;Haidong Pingan District Meteorological Bureau,Qinghai Key Laboratory for Disaster Prevention and Mitigation,Haidong 810600,China)

机构地区：[1]海西州气象局青海省防灾减灾重点实验室,青海海西817000 [2]海东市平安区气象局青海省防灾减灾重点实验室,青海海东810600

出　　处：《现代建筑电气》2018年第6期36-38,42,共4页Modern Architecture Electric

摘　　要：介绍了接地体周围的电压降和电位分布,阐述了接地电阻测量过程中采用缩短布线距离的方法和大型接地网内部采用短线测量的方法,探讨了辅助接地极与零电位区域的位置关系,分析了辅助接地极位置对测量数据的影响。提出接地电阻测试应严格遵循GB/T 21431—2015《建筑物防雷装置检测技术规范》中布线距离的要求,以提高检测数据的科学性和准确性。The voltage drop and potential distribution around the grounding body were introduced. The grounding resistance measuring methods of shortening wiring distance and using short line in large grounding grid were elaborated.The position relation between the auxiliary grounding electrode and the zero potential area was discussed,and the influence of the auxiliary grounding electrode position on the measurement data was analyzed. It is pointed out that the grounding resistance measurement should strictly follow the wiring distance requirement of national standard GB/T21431—2015,in order to improve the scientificity and accuracy of measuring data.

关 键 词：大型接地网 接地电阻测试 布线方法 零电位 

分 类 号：TU856[建筑科学]