A Study on the Fault Diagnoais of Protected Facility using Relay Information

보호계전기 정보를 이용한 피보호 설비의 고장진단에 관한 연구

This paper proposes a concept for fault diagnosis system based on the relay coordination to deal with unavoidable uncertainties imposed on fault dignosis of substation. This system uses information on the relay setting values and tripped data to identify the faulted element of power system. The proposed concept will be very useful and efficient for substation and control center operator.