Development of expert system for power transformer information management and fault diagnosis

Development of power transformer information management and fault diagnosis expert system (TFDES) is significant to the safe operation of transformers and the electric power system. The frequently-used methods for transformer fault diagnosis were introduced and the structure, the deduction mechanism, the realization method and the major functions in diagnosis management of the developed TFDES were described. Field tests showed that the TFDES is reasonable in structure, correct in deduction mechanism and effective in diagnosing the internal faults of transformer in operation.