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Visualization of Contact Vibration generated on Turbine Model using Fast Haar Wavelet Transform

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4 Author(s)
Kawada, M. ; Inst. of Technol. & Sci., Tokushima Univ. ; Yamada, K. ; Kaneko, Y. ; Isaka, K.

In this paper we present the results of fundamental study to introduce the in-place fast Haar wavelet transform to vibration diagnosis for a turbine and a generator. It is required to detect typical vibration of the turbine and the generator accurately. Modern power plants usually use one-high pressure and one or two lower pressure turbines. We made the turbine model with 3 rotors supported with journal bearings to simulate rotor-to-stator contact. The contact vibration was measured with displacement meters, acoustic emission sensors and accelerometers. The acceleration signals accompanied by the contact were visualized in the time-frequency domain by the in-place fast Haar wavelet transform. The in-place fast Haar wavelet transform can clearly detect the components accompanied by the contact

Published in:

Power Systems Conference and Exposition, 2006. PSCE '06. 2006 IEEE PES

Date of Conference:

Oct. 29 2006-Nov. 1 2006

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