Common Faults and Their Handling in Substation Station-Control Layer Automation Systems

This study is based on the fault management system of the centralized control center in Huizhou substations. Through on-site fault investigations and case analyses, it identifies common failures in the relay protection information substation system and network switches within the substation control layer automation system during field operation. Mitigation recommendations and improvement measures are proposed to systematically enhance the maintenance framework for substation automation systems.