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The power transformer noise has become increasingly serious. The accurate measurement of transformer noise is more and more important. In this paper, the 220kV power transformer is measured with both the sound potential method and the vibration method. The measurement environment and measurement method are introduced in detail. The frequency spectrum analyses of the transformer noise and the vibration results are carried out. The relationship between the transformer noise and the vibration is studied. The research results can provide data base for noise source identification and noise suppression of the transformer.

Analysis of Vibration and Noise Characteristics of the Power Transformer