有效消除地网干扰的接地电阻变频测量法

An Effective Method of Removing Grounding Grid Interference—Grounding Resistance Frequency Conversion Measurement

介绍了变频法测量接地电阻的原理、接地电阻变频测量仪的结构、数据处理方法和实测结果。该法能有效消除地网干扰电压与引线互感电压的影响，可直接给出地网的接地电阻值。

This paper introduces the principle of frequency changing method of grounding resistance measurement, the structure of frequency conversion measurement apparatus and data process method. It can eliminate influence of interference voltage in grounding and the mutual inductance between current line and voltage line by using grounding resistance frequency changing measuring apparatus. An actual example is given out.