NDLI: A prediction technique of power transformer condition assessment via DGA parameters

Content Provider	IEEE Xplore Digital Library
Author	Haema, J. Phadungthin, R.
Copyright Year	2013
Description	Author affiliation: Dept. of Electron. Eng. Technol., King Mongkut's Univ. of Technol. North Bangkok, Bangkok, Thailand (Phadungthin, R.) \|\| Dept. of Electr. Eng. Technol., King Mongkut's Univ. of Technol. North Bangkok, Bangkok, Thailand (Haema, J.)
Abstract	This dissolved gas analysis is the most important tool for determining the condition of power transformer. It is the first indicator of a problem and can identify deterioration of the insulating such as overheating, hot spot, partial discharge and arcing. Therefore, this paper presents a prediction technique of power transformer condition assessment, by using DGA parameters in the analysis. The key gas parameters include hydrogen $(H_{2}),$ methane $(CH_{4}),$ acetylene $(C_{2}H_{2}),$ ethane $(C_{2}H_{6}),$ carbon monoxide (CO) and carbon dioxide $(CO_{2}).$ The historical test results of the dissolved gas analysis of power transformers rated 115/22 kV 50 MVA analyzed as an example. There are two procedures used in the condition assessment; one is total dissolved combustible gas while the other is key gas. Firstly, the total dissolved combustible gas is considered. Next, the key gas is utilized for specify the incipient faults. Finally, the known condition can be used to plan appropriate maintenance effectively in the utility. This results in higher system reliability and longer useful lifetime of the power transformer.
Sponsorship	IEEE Hong Kong Sect., IE/PE/IA/PEL Joint Chapt.
Starting Page	1
Ending Page	4
File Size	644918
Page Count	4
File Format	PDF
ISBN	9781479925223
DOI	10.1109/APPEEC.2013.6837171
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-12-08
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hydrogen DGA parameters Carbon dioxide Oil insulation Condition assessment Power transformer Power transformer insulation
Content Type	Text
Resource Type	Article

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