DocumentCode :
279317
Title :
The checker system to provide control over gas concentration in a power transformer oil
Author :
Arakelyan, V.G. ; Vertikov, V.P.
Author_Institution :
All-Russian Electrotech. Inst., Moscow, Russia
fYear :
1992
fDate :
7-10 Sep 1992
Firstpage :
267
Lastpage :
269
Abstract :
Gases are formed in transformer oil as a result of electrical discharge stresses and great thermal power release that causes chemical decomposition of the insulating medium. The gases formed dissolve in oil easily. Each of the main three types of faults corresponds to a specific combination of gases. With arcing discharge all gases associated with the fault are formed, pyrolysis causes the formation of all gases, except acetylene, and corona discharge causes the appearance of large amount of hydrogen. The identification of a developing fault can be performed, the severity of fault can be predicted and the time-schedule of maintenance can be determined according to the concentration of gases. The device developed is intended for the monitoring of the combustible gases´ level in a transformer and is installed directly on the transformer tank or the oil cooling system
Keywords :
computerised instrumentation; fault location; insulating oils; insulation testing; life testing; maintenance engineering; power transformers; transformer insulation; transformer testing; arcing discharge; checker system; chemical decomposition; corona discharge; electrical discharge; fault identification; gas evolution monitoring; power transformer oil; preventive maintenance; pyrolysis; specific combination of gases; time-schedule of maintenance;
fLanguage :
English
Publisher :
iet
Conference_Titel :
Dielectric Materials, Measurements and Applications, 1992., Sixth International Conference on
Conference_Location :
Manchester
Print_ISBN :
0-85296-551-6
Type :
conf
Filename :
186933
Link To Document :
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