Construction Technology and Application of Graphite-based Flexible Grounding Bodies for Wind Farms and Photovoltaic Power Stations

Abstract

To fundamentally solve the challenges of grounding grid corrosion, difficult construction, and high environmental risk in highly corrosive and high-resistivity complex terrain areas for wind farms and photovoltaic (PV) stations, a complete set of construction techniques for graphite-based flexible grounding bodies is proposed and systematically summarized. This technology uses high-carbon flake graphite as the main body material, utilizes the principles of electric field dispersion and composite anti-corrosion, ensures long-term resistance reduction, and completely avoids open-flame operations in the field. This paper elaborates on the construction process flow, key operation points, materials and equipment, and quality control measures for graphite-based flexible grounding bodies. Through life-cycle cost analysis and typical engineering case verification, its technical and economic superiority is demonstrated. The results show that this method can stably maintain grounding resistance below the design value, reduce the life-cycle cost by approximately 60% compared with the traditional copper-clad steel scheme, and avoid heavy metal pollution, offering significant economic, social, and environmental benefits.