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.
出处
《管道技术与设备》
CAS
2013年第6期39-41,共3页
Pipeline Technique and Equipment
关键词
阳极地床
接地电阻
三极直线布线法
网孔分析法
ground bed
grounding resistance
straight placement of three-pole measurement
mesh analysis of electric circuit
