大型地网接地电阻的测试方法

Testing method of grounding-resistance for large scale earthed network

阐述了应用异频法测量大型地网接地电阻的方法。该方法在试验电流频率与系统工频接近的条件下,可获得稳定可信测量结果。

The paper discussed the method using abnormal frequency to measure grounding- resistance of large scale earthed network, which can get confident and stable tested results in the condition of testing current frequency similarly to the system＇s power frequency.