Engineering Practice of On-Line Monitoring and Intelligent Diagnosis System for Secondary Equipment in Smart Substation

With the gradual development of smart substation technology, the operation and maintenance methods and safety management and control technologies for smart stations tend to diversify. However, in the operation and maintenance of intelligent substations, there has been a lack of a systematic technical support platform for secondary equipment circuits, secondary safety operations, protection operation status monitoring, and intelligent diagnosis. This article specifically introduces the functions and engineering practice cases of the secondary equipment monitoring and intelligent diagnostic system for intelligent substations. The system builds a visualization and intelligent operation and maintenance system for relay protection through multi-source data collection, data modeling and system application integration technology , and provides the following functions: secondary virtual and real loop visualization, protection equipment monitoring, intelligent diagnosis and maintenance strategy auxiliary decision-making functions, , which improves the ability and efficiency of substation operation and maintenance personnel to quickly locate diagnosis and deal with equipment defects.