The comparison between the acquisition vibration data obtained by different types of transducers for hydraulic turbine head cover

HYPERBOLE Symposium 2017 (HYdropower plants PERformance and flexiBle Operation towards Lean integration of new renewable Energies)

Li, Youping^1 ; Lu, Jinsong^2 ; Cheng, Jian^1 ; Yin, Yongzhen^1 ; Wang, Jianlan^1

Technology and Research Center of China Yangtze Power Corporation, Yichang Hubei

443002, China^1

XiangJiaBa Hydraulic Power Plant, Yibin, Sichuan

644000, China^2

关键词: Eddy current transducers;    Hydraulic power plant;    Hydro generator;    Measurement modes;    Research subjects;    Reservoir upstream;    Turbine performance;    Vertical vibrations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/813/1/012031/pdf
DOI  :  10.1088/1742-6596/813/1/012031

来源: IOP

【 摘 要 】

Based on the summaries of the rules about the vibration measurement for hydro-generator sets with respect to relevant standards, the key issues of the vibration measurement, such as measurement modes, the transducer selection are illustrated. In addition, the problems existing in vibration measurement are pointed out. The actual acquisition data of head cover vertical vibration respectively obtained by seismic transducer and eddy current transducer in site hydraulic turbine performance tests during the rising of the reservoir upstream level in a certain hydraulic power plant are compared. The difference of the data obtained by the two types of transducers and the potential reasons are presented. The application conditions of seismic transducer and eddy current transducer for hydro-generator set vibration measurement are given based on the analysis. Research subjects that should be focused on about the topic discussed in this paper are suggested.