防雷接地电阻测试原理分析

Analysis on Testing Principle of Lightning Protection and Grounding Resistance

通过防雷接地电阻测试的等效电路,确定了接地电阻的组成部分。通过准确解释防雷接地电阻测试方法,分析了在土壤中传播的测试电流的特性,讨论了扩散电流流过地段电位散度为零的地段的形成。测试接地极的合理安置,保证了接地电阻测试结果的准确性。

Through the equivalent circuit of lightning protection and grounding resistance test, the grounding resistance components were determined. The lightning protection grounding resistance test method was interpreted accurately, and the spread in soil of the test current properties were analyzed, the diffusion current flowing through the area of divergence zero lot were discussed. The rational placement of grounding electrode ensured the accuracy of test results of grounding resistance.