Firstly, briefly explain the grounding characteristics of the new grounding material; Then, the finite element calculation method is used to compare and analyze the electromagnetic characteristics (skin effect and inductance effect) of the new grounding material with common copper and steel grounding materials; Subsequently, based on numerical calculation results, structural improvements were made to the flexible graphite composite grounding material Below, the editor of graphite grounding will lead everyone to understand it together.

We have prepared expanded diameter graphite composite grounding materials and analyzed the feasibility of using graphite composite grounding materials in the grounding of transmission line towers; The editor in charge of graphite grounding reminds you to verify the reliability of the flexible graphite composite grounding material described in this article through on-site testing data of the new grounding material in 110kV and 220kV transmission line tower grounding projects. The research content has practical application value for anti-corrosion engineering in the field of power system grounding.

The following conclusions were drawn from the analysis of graphite composite grounding materials and their grounding characteristics by the editor of graphite grounding.

1) The editor of graphite grounding reminds you that as a new type of non-metallic grounding material, graphite composite grounding material has the characteristics of corrosion resistance, low cost, easy transportation and construction, close adhesion with soil, and anti-theft compared to current metal grounding materials.

2) Compared to metal grounding materials, graphite composite grounding materials have less skin effect, higher material utilization rate, and lower inductance effect than steel grounding materials. This makes the power frequency grounding resistance of graphite composite grounding materials slightly lower than that of steel grounding materials (the difference is small when the soil resistivity is above 100? · m), but the impulse grounding impedance under high-frequency lightning current is lower than that of steel.

3) Expanded diameter graphite composite grounding material was prepared by structural improvement of graphite composite grounding material. Choosing a diameter expansion rate of 30% to 40% can effectively reduce the skin effect and inductance effect of the grounding body, and expanding the diameter of the grounding body can further reduce the grounding resistance.

4) The editor of graphite grounding reminds you that graphite composite grounding materials meet the application requirements of transmission line tower grounding engineering under harsh geological conditions, and have practical application value and prospects.