一二次融合 252 kV 智能组合电器的设计与实现

In view of such issues as insufficient intelligent monitoring means for high-voltage combined switchgear, inconsistent interface of sensor and monitoring device, weak local data analysis ability and late finding of equipment defect, the design of intelligent sensing system and local edge intelligent analysis unit of 252 kV combined switchgear is completed from the perspective of primary and secondary integration. The mechanical interface between the sensor and the switchgear proper, the electrical interface between the sensor and the monitoring device as well as each condition data to be acquired at the local edge calculation terminal of the switchgear are unified for multi-parameter integration analysis and, on this basis, the local analysis of switchgear condition and early warning are realized. It is proved by the type test that the the accuracy rate of sensing system of the 252 kV intelligent combined switchgear designed in this paper is 100%, and the accuracy rate of fault diagnosis and analysis is 98%, has higher operation reliability and intelligent level, which improves the convenience of operation and maintenance.