浅埋长阳极地床接地电阻的测试误差分析  

Error Analysis of Long Ground Bed Grounding Resistance Measurement

作　　者：胡亚博 何流 张逸夫 

机构地区：[1]中国石油管道公司沈阳龙昌管道检测中心,辽宁沈阳110031 [2]中国石油管道公司长沙输油气分公司,湖南长沙410000

出　　处：《管道技术与设备》2013年第6期39-41,共3页Pipeline Technique and Equipment

摘　　要：电流极引起的电场畸变和电位极位置与远方大地位置的差异,是三极直线布线法测量长阳极地床接地电阻的主要误差来源。在采用网孔分析法对测量原理进行分析的基础上,结合现场测试结果发现:随着电流极与阳极地床距离的增加,接地电阻测试曲线上开始出现平缓区;接地电阻测量值逐渐接近计算值,测试误差减小。在现场场地限制的条件下,缩短电流极与阳极地床的距离进行多组测试后,进行拟合分析也能够满足工程需要。The distortion of an electric field caused by the current pole and the offset of a potential pole from the remote earth is two main sources of error when grounding resistance is measured. This paper study the effect of the current pole and the location of the potential pole on the measurement of grounding resistance. With the distance between ground the bed and the current pole incrreasing,the error of measurement decreases. However,when the area is restricted,polynomial fitting also can meet the engineering requirement.

关 键 词：阳极地床 接地电阻 三极直线布线法 网孔分析法 

分 类 号：TE8[石油与天然气工程—油气储运工程]