Entity

Time filter

Source Type

Changwon, South Korea

Kim S.-W.,Nae Dong | Kim S.-J.,Nae Dong | Seo H.-D.,Nae Dong | Jung J.-R.,Nae Dong | And 2 more authors.
IEEE Transactions on Dielectrics and Electrical Insulation | Year: 2013

This paper proposes a new method of DGA diagnosis, using IEC TC 10 and related databases. We analyzed five gas components (hydrogen, methane, acetylene, ethylene and ethane), which are used for analysis in the standards, with 10 types of gas ratios, and came up with 6 types of gas ratios among them, that can classify faults. Then, we reorganized and analyzed the 6 gas ratios with 15 gas-ratio combinations. From the results, we can suggest a new diagnosis method using 3 gas-ratio combinations that are able to classify fault areas clearly. © 1994-2012 IEEE. Source


Lee S.-J.,Nae Dong | Kim Y.-M.,Nae Dong | Seo H.-D.,Nae Dong | Jung J.-R.,Nae Dong | And 2 more authors.
IEEE Transactions on Dielectrics and Electrical Insulation | Year: 2013

Four combustible gases (hydrogen, acetylene, ethylene and methane) generated by internal faults in transformers were selected in this paper to diagnose faults, and two diagnosis methods are proposed. One consists in distinguishing between faults based on the relative percentage of these four gases, and the other in using combinations of the relative percentage of two of these four gases. Accuracy of the proposed diagnosis methods was verified using IEC TC 10 and related databases. © 1994-2012 IEEE. Source

Discover hidden collaborations