A New Flexible Graphite Composite Electrical Grounding Material

Abstract

Corrosion is an inevitable problem of metallic grounding grids. To propose an effective method avoiding the above corrosion, a new type of non-metallic grounding material was made in this paper. It is called flexible graphite composite grounding material, namely flexible graphite composite grounding material for short. It is made by high-purity flake graphite with a stranded wire hierarchical structure. And a series of experiments have been carried out to verify its feasibility as electrical grounding material, including material resistivity and its contact resistance measurement, temperature tolerance test, mechanical performance test, and scaled electrical grounding test of several typical electrical grounding grids. These experimental results all indicate that characteristics of the new flexible graphite composite grounding material can well meet practical electrical engineering requirements.

Review on Soil Corrosion and Protection of Grounding Grids

“…This conductor is capable of withstanding sustained strong currents, among other benefits. Huang et al [123] proposed a flexible graphite composite grounding material composed of high-purity flake graphite and conducted tests to confirm its adherence to electrical-engineering requirements. Furthermore, graphenecomposite grounding devices have proven to possess superior current-drainage capacity and resistance-reducing effect compared to galvanized steel.…”