探索沿地网对角布线的接地电阻测量

The Exploration about the Ground Resistance Measurement along the Diagnoal Line of Grounding Grid

按照相关规范,常规的接地电阻测量的布线是测量线垂直地网边中点,电流测量线长度常是地网对角长度的2-3倍,但在实际的工作中,常遇不达测量要求的环境。针对这一问题,探索测量线沿地网对角线布置的方法,选择二小测量电流的接地电阻测量仪,测量一小地网的接地电阻并统计分析。结果：沿地网对角线布置且电流测量线长度是地网对角长度的2（3-4）倍和常规测量且电流测量线长度是地网对角长度的2（2-3）倍＂总体均值无显著差异＂。测量线沿地网对角线布置的可替代测量线垂直地网边中点的接地电阻测量。

It is recommend that the middle side of the grounding grid is vertical with measure line, the length of current measure line is 2 - 3 times than the length of the diagonal line of grounding grid, but required environment is not satisfied in the actual work. In view of the problem, it is explored about the ground resistance measurement along the diagonal line of grounding grid, Measurements and statistical analyses of a small grounding grid＇s ground resistance were done by choosing two kinds of small earth resistance meter. Conclusion： between the length of current measure line is 2 （3 -4） times than the length of the diagonal line of grounding grid and the length of current measure line is 2 （ 2 - 3 ） times than the length of the diagonal line of grounding grid, there is no significant difference in overall Average. The two methods can replace each other.