DIAGNOSING METHOD FOR AGING DETERIORATION OF OIL-FILLED ELECTRIC APPARATUS

PURPOSE:To diagnose an aging deterioration state of oil-impregnated insulator without adverse influence of CO to be generated when an internal malfunction occurs. CONSTITUTION:Ketones dissolved in insulation oil are detected to diagnose its deterioration. In the case of detecting the ketones, the oi...

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Bibliographische Detailangaben
Hauptverfasser:	UMEMURA TOKIHIRO, ABE KEIICHI
Format:	Patent
Sprache:	eng
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
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Beschreibung
Zusammenfassung:	PURPOSE:To diagnose an aging deterioration state of oil-impregnated insulator without adverse influence of CO to be generated when an internal malfunction occurs. CONSTITUTION:Ketones dissolved in insulation oil are detected to diagnose its deterioration. In the case of detecting the ketones, the oil is sampled from an oil-filled electric apparatus body, deteriorated product dissolved in the oil is extracted as a sample 2, and an aqueous solution sensor 4 having sensitivity to the ketones is used. Or, the oil is sampled from the body, vaporized to a vapor state, and it is measured without contact with the body by using a synthetic 2-molecule film sensor having sensitivity to the ketone.