NDLI: Unusual ethylene production of in-service transformer oil at low temperature

Content Provider	IEEE Xplore Digital Library
Author	Besner, S. Jalbert, J. Noirhomme, B.
Copyright Year	1994
Abstract	The study sponsored by the CEATI Life Cycle Management of Station Equipment & Apparatus Interest Group deals with an unusual gassing trend of dissolved gas-in-oil in power transformers. The history of gas generation development in these free-breathing transformers shows that ethylene and carbon dioxide gases were produced progressively under normal operating conditions without the simultaneous generation of hydrogen and other hydrocarbon gases. Thermal aging experiments performed in the laboratory on inservice oil in closed air-saturated glass ampoules revealed a dominant influence of oxygen and temperature on the oil's chemical stability. The results suggest that the degradation of the in-service oil is governed by an oxidation process in an oxygen-rich environment at unexpectedly low temperatures. The possible raisons explaining the unusual gassing trend of dissolved gas-in-oil in power transformers were not elucidated in this study.
Sponsorship	National Natural Science Foundation of China (NSFC) Region Centre Ville de Tours Conseil General D'Indre et Loire ABB IEEE Sandia National Laboratories TOSHIBA
Starting Page	1901
Ending Page	1907
Page Count	7
File Size	239285
File Format	PDF
ISSN	10709878
Volume Number	19
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Aging Production Oil insulation Power transformer insulation Oxidation Gases Thermal stability DGA. Ethylene oxidation insulating oil power transformer aging
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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