A fuzzy expert system for the integrated fault diagnosis

An integrated fuzzy expert system is presented to diagnose various faults t hat may occur in a regional transmission network and substations. Fuzzy rea soning method is applied, and it is discussed in detail; Discrimination of false operations or nonoperations of protective devices as well as the faul t identification scheme are also analyzed, together with the fuzzy inferenc e process. The proposed system is designed to improve efficiency, generalit y, and reliability of the solution. The system will replace a fault diagnos is system that had been tested as a part of an intelligent support system o n a local control center in Korea.