Evaluation Method of Nano-Carbon Fiber Grounding Grid Considering Short Circuit Current Distribution-Part II: Applications in the Grounding Grid

In the first part of this paper, the calculation method of grounding parameters of nano carbon fiber grounding grid have been analyzed under the condition of split current distribution. In this paper, the calculation methods of ground potential increase, grounding grid potential difference, contact potential difference and step potential difference of nano-carbon fiber grounding grid after considering the distribution of short-circuit current are studied, and the control strategies of various performance indexes are studied. The research results show that: due to the high resistivity of carbon nanofibers material, the inner selfimpedance of the grounding grid is large, the reflux current and the shunt current have a great influence on the calculation of the grounding parameters of the carbon nanofibers grounding grids, and have the greatest influence on the potential difference within grounding grids.