Research on Integration Construction and Safety of Grounding System in Three-in-One Station

The integration of substation, energy storage station and data center grounding system is the key point in the construction of three-in-one station. Firstly, the change of ground potential rise (GPR) before and after the integration of the three-in-one station grounding system under lightning stroke and short circuit is studied. Secondly, the influence of instantaneous impulse current and lightning overvoltage on the secondary equipment in the fusion station and the tolerance and protection measures of the secondary equipment are analyzed. At last, the actual values and limits of the safety parameters of the three-in-one integrated grounding system are calculated by simulation based on CDEGS software, and relevant measures to improve the safety are put forward. The research shows that the integration construction of three stations grounding system can reduce GPR difference and improve the safety of three-in-one stations.