Oil-gas separation mechanism of polymer membranes applied to online transformer dissolved gases monitoring

Author

Tong, Laisheng ; Wu, Guangning ; Sheng, Jinlu ; Zhang, Jun ; Zhou, Lijun

Author_Institution

Sch. of Electr. Eng., Southwest Jiaotong Univ., Sichuan, China

fYear

2004

fDate

19-22 Sept. 2004

Firstpage

97

Lastpage

100

Abstract

Gas chromatography has been used to detect gases associated with transformer partial discharge, overheating, arcing and other problems. Now, gas chromatography diagnostics of power transformers has been recognized as the most efficient physical chemical online diagnostic method for determination of potential thermal or electrical faults in transformer. Gas dissolved in transformers oil is extracted automatically by certain polymer membranes. Some polymer membranes have already been applied to online transformer dissolved gas monitoring, such as polytetrafluoroethylene (PTFE), polyimide, and so on. The oil-gas separation mechanism of polymer membranes has been discussed in the paper. Also, factors that influence oil-gas separation are analyzed.

Keywords

arcs (electric); chromatography; electrical faults; membranes; partial discharges; polymers; power transformer testing; transformer oil; arcing; dissolved gases monitoring; electrical faults; gas chromatography; oil-gas separation mechanism; online power transformer; partial discharge; physical chemical online diagnostic method; polyimide; polymer membranes; polytetrafluoroethylene; potential thermal faults; transformers oil; Biomembranes; Chemicals; Electric potential; Gas chromatography; Gases; Monitoring; Oil insulation; Partial discharges; Polymers; Power transformers;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 2004. Conference Record of the 2004 IEEE International Symposium on

ISSN

1089-084X

Print_ISBN

0-7803-8447-4

Type

conf

DOI

10.1109/ELINSL.2004.1380469

Filename

1380469