The auxiliary equipment monitoring system includes subsystems such as primary equipment online monitoring, fire protection, security defense, power environment monitoring, intelligent lock control, and intelligent inspection, achieving functions including primary equipment online monitoring, fire alarm, security guarding, power environment monitoring and control, intelligent lock control, classified storage of image monitoring information, intelligent linkage, and comprehensive display. The primary equipment online monitoring, fire protection, security defense, power environment monitoring, and intelligent lock control subsystems are deployed in Security Zone II, while the wireless sensor access and intelligent inspection subsystems are deployed in Security Zone IV. Security Zone II and Security Zone IV are interconnected through forward and reverse isolation devices.

Advanced sensing technology is employed to comprehensively collect substation environmental parameters, physical parameters, status parameters, and electrical parameters. With the objective of "comprehensive state perception, interconnected information sharing, highly intelligent equipment diagnosis, and significantly improved operation and maintenance efficiency" for the power grid, visualization technology serves as the core technology to achieve real-time alarm, linkage processing, and auxiliary decision-making, realizing integrated management and control of substations under jurisdiction and significantly enhancing operation and maintenance efficiency.