Comparison and Analysis of Grounding System Scheme of Intelligent Energy Station “Multi-station Fusion” Project based on CDEGS Simulation

This paper analyzed the earthing system of traditional stations such as substations, data centers, and energy storage stations, established the calculation boundary conditions and requirements of the earthing system. Through CDEGS modeling and simulation, the characteristics of the decentralized and the joint earthing system are compared and analyzed. The joint earthing system is recommended as the earthing scheme of the “multi-station integration” project; By taking appropriate reduction measures, the earth potential rise, step potential difference and touch potential difference meet the requirements of relevant boundary conditions, so as to improve the comprehensive energy efficiency and safety of smart energy stations. The results of this study have been piloted in some power grid projects, which is conducive to improving the comprehensive energy efficiency and reducing the construction and operation cost, and can provide reference cases and basis for the grounding system design of more smart energy station “multi-station integration” projects in the future.