A novel diagnosis method for hydropower unit rotor with coupling faults

作者：Fu Xiangqian^*; Lin Yatao; Xu Hao; Xiao Zhihui

来源：Journal of Optoelectronics and Advanced Materials, 2014, 16(7-8): 978-984.

• Hydropower unit
• Nonlinear dynamics of rotor
• Multi-scale morphology spectrum
• Fault diagnosis

According to the coupling faults of mass eccentricity and misalignment, the paper presents a novel fault diagnosis method for hydropower unit rotor based on the multi-scale morphology spectrum and morphological spectrum entropy. Such a method can be used to analyze the tested signals, which are divided into the stable periodic motion, periodic rubbing motion and chaotic motion. It is demonstrated that the morphology spectrum form and entropy value are different, and the characteristics of vibration efficiency under different condition can be identified very well. The present study therefore offers a methodology for the improvements of the safety, reliability and economical efficiency of hydropower unit rotors.

• 出版日期2014-8
• 单位武汉大学