METHOD FOR PREDICTING AMOUNT OF COPPER SULFATE PRODUCED IN OIL-FILLED ELECTRIC DERIVE, METHOD FOR DIAGNOSING OCCURRENCE OF ABNORMAL EVENT, METHOD FOR PREDICTING INITIAL CONCENTRATION OF DIBENZYL DISULFIDE IN INSULATING OIL, AND METHOD FOR DIAGNOSING POSSIBILITY OF OCCURRENCE OF ABNORMAL EVENT

摘要

Disclosed is a method for predicting the amount of copper sulfide produced in an oil-filled electric device, including the steps of: (1) measuring the concentration(s) of one or more specific product(s) contained in an insulating oil collected from the oil-filled electric device; and (2) predicting the production amount of copper sulfide on the basis of the concentration(s) of the specific product(s). The specific product(s) is/include at least one compound selected from the group consisting of benzyl alcohol, benzaldehyde, benzoic acid, and dibenzyl sulfoxide.