大型接地网接地电阻测量误差分析和对策

Error Analysis and Countermeasure for Large Grounding Grid Resistance Measurement

结合北仑发电厂大型接地网接地电阻的实测,分析了引起大型接地网接地电阻测量误差的原因,并提出了消除干扰的方法和对策,在现场实测时加以应用,测量结果与理论计算分析结果相吻合。提出的测量方法对今后测量大型接地网接地电阻具有参考意义。

Based on the measurement of large grounding grid resistance in Beilun Power Plant, this paper analyses the reason of measurement error of large grounding grid resistance, and offers a solution to eliminate the error. This solution was applied in site measure successfully. The measured result matched with theory calculation. The measurement solution presented by this paper will he useful to measure large grounding grid resistance in future.