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Original scientific paper

Dissolved gas analysis: Early fault indication and trend analysis

Jürgen Schübel ; Maschinenfabrik Reinhausen GmbH
Alexander Alber (Pollok) ; Maschinenfabrik Reinhausen GmbH

Full text: english pdf 860 Kb

page 89-95

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A review of the two approaches of dissolved gas analysis – detailed fault diagnosis and trend analysis with fault indication – is given. The advantages and disadvantages of the two approaches under the aspects of measurement uncertainty, economic efficiency and integration into a condition assessment strategy are outlined. A concept of signal processing enhancing the capabilities of trend analysis and early fault indication is described. It is concluded that trend analysis with early fault indication is sufficient for most cases of an integrated condition monitoring system.


condition assessment, DGA, trend analysis

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