Temperature Dependence of on-Line DGA Results for Transformers through Membrane Extraction

Yang Liu Li; Wen Da Wu

doi:10.4028/www.scientific.net/AMR.614-615.1163

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 614-615Temperature Dependence of on-Line DGA Results for...

Temperature Dependence of on-Line DGA Results for Transformers through Membrane Extraction

Abstract:

Concentration detection of gases dissolved in transformer insulation oil is an effective method to diagnose incipient fault in electrical equipment. The permeation process of gases dissolved in transformer oil through extraction membrane is studied. Temperature dependence with accuracy of on-line DGA results through gases extraction with polymer membrane is analysed. An algorithm which includes temperature coefficient which can improve the accuracy of DGA results is proposed. An on-line DGA system with Teflon membrane and electrochemical gas sensors is constructed; while the results are adjust by temperature coefficient. Compared with GC results in the laboratory, the accuracy of the on-line DGA results has been improved.

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Periodical:

Advanced Materials Research (Volumes 614-615)

Pages:

1163-1167

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.614-615.1163

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Online since:

December 2012

Authors:

Yang Liu Li, Wen Da Wu

Keywords:

Dissolved Gas Analysis, Extraction Membrane, Online Monitoring, Temperature Coefficient, Transformer

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