Research on Dispersion Characteristics of Grounding Electrode under Frozen Soil

The grounding electrode burial environment in the extremely cold regions of northern China is extremely complicated. Based on the above situation, this paper has carried out relevant research. First, a calculation model of the current field of the single-ring grounding electrode is established, and the potential distribution formula of the space where the grounding electrode is located is deduced. Then, taking Aogan Chaolu's double-ring grounding electrode as an example, the ground potential of the grounding electrode under the normal soil model is approximately 300V. Next, we establish the frozen soil model, further analyze the ground potential and current distribution characteristics for the grounding electrode in Aogan Chaolu based on the soil resistivity obtained by field measurement. Compared to normal soil, the maximum ground potential rise is 807.307V, and the maximum step voltage rises to 8.96V.