Abnormality diagnosis apparatus and abnormality diagnosis method for oil-filled electrical equipment

摘要

PROBLEM TO BE SOLVED: To provide an abnormality diagnosis device and an abnormality diagnosis method of an oil-filled electric apparatus capable of detecting occurrence of internal abnormality in an oil-filled transformer, and the like.SOLUTION: Abnormality diagnosis means 8 is attached onto a breathing passage 7 of an oil-filled electric apparatus A, and an increase in a generation amount of hydrocarbon gas generated due to internal abnormality is diagnosed utilizing respiration of the oil-filled electric apparatus A. Diagnosis is performed by comparing the discoloration velocity of an agent 8b with a normal discoloration velocity, or by confirming the amount of hydrogen stored in a hydrogen storage alloy.