ENERGETIKA

ISSN for PRINT: 0235-7208

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2005, Volume2

Issue 2

74 pages

Issue price - $29.00

Algimantas Navickas
Kauno technologijos universitetas, Elektros sistemo katedra, Studentø g. 48, LT-51367 Kaunas, Lithuania

Birute Linkeviciute
Kauno technologijos universitetas, Elektros sistemos katedra, Studentø g. 48, LT-51367 Kaunas, Lithuania

The dissolved gas analysis methods are reviewed. A combined fuzzy IEC code — key gas method for determining the nature of transformer failures is explored on the basis of the fuzzy sets theory. Only a single or a dominant failure can be determined by the conventional IEC code method. A combined fuzzy IEC code - key gas method allows determining, multiple failures in a transformer and quantitatively indicate the possibility of each failure. The obtained results coincide with the real transformer failures.

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