The PRS-7002 secondary equipment state monitoring and intelligent diagnosis system consists of acquisition unit and control unit. The acquisition unit obtains the process level data via the process level network, while the control unit acquires data from the station control level network and receives the data sent by the acquisition unit. The system can provide the functions of secondary equipment and circuit state monitoring, visual display, monitoring and early warning, intelligent diagnosis, intelligent inspection, intelligent security measures, and comprehensive analysis of fault information, which can provide auxiliary technology support to the operation, maintenance and management of secondary equipment in substations, such as monitoring, overhauling and shortcoming elimination.

With the large-scale popularization and application of intelligent substations, the demand for operation and maintenance of secondary equipment is continuously growing. To address this demand, CYG SUNRI independently developed the PRS-7012 operation and maintenance main station system based on the PRS-7002 secondary equipment state monitoring and intelligent diagnosis system according to the technical specifications formulated by State Grid Corporation of China.The main station system is deployed at the dispatching end of power grid, which can realize online monitoring and intelligent diagnosis and analysis of secondary equipment in the intelligent substation. The specific functions include: operating condition monitoring of secondary equipment, real-time monitoring of virtual circuit, anti-misoperation monitoring, fixed-value management, wave recording management, data query, statistical analysis, virtual terminal CRC online check, SCD file management and control, defect location, monitoring and early warning.