Abstract: The popularity of intelligent substations is getting higher, and the secondary equipment of substations is transformed to digital. The types and numbers of signals in intelligent devices have grown significantly. In the past, the verification and processing of abnormal signals depended on manual work, the efficiency was low and the accuracy depended on individual skill level. In this paper, a set of automation-based intelligent substation signal analysis and processing system is designed and implemented, which realizes the automatic analysis of abnormal signals and pushes the processing plan of abnormal events, and improves the processing efficiency of abnormal events and the level of system operation and maintenance.