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Methods of signal analysis for vibration control at hydropower plants

Methods of signal analysis for vibration control at hydropower plants

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Development of vibration condition monitoring system of hydraulic unit on the basis of wavelet transform allows efficient controlling of equipment in the operating mode and has several advantages over spectral analysis. The use of wavelet transform includes not only vibration analysis that aims to define in time interval moment of change in the state of equipment but also to predict the time for its development. This increases effectiveness of detecting defects at an early stage of development, which is very important in the case of hydroelectric power plant as such analysis provides more flexibility in avoidance of hydraulic units malfunctioning prevention.

Chapter Contents:

  • 6.1 Introduction
  • 6.2 Hydro units vibration control methodology: implementation of wavelet transform
  • 6.3 Hydropower plant vibration diagnostics case study
  • 6.3.1 Controlling object and measurement equipment characteristics
  • 6.3.2 Hydraulic unit's vibration condition monitoring on the basis of diagnostics data wavelet analysis
  • 6.4 Conclusions
  • References

Inspec keywords: power generation control; condition monitoring; vibration control; wavelet transforms; spectral analysis; hydroelectric power stations

Other keywords: equipment control; spectral analysis; wavelet transform; vibration condition monitoring system; vibration analysis; hydraulic unit; signal analysis; hydroelectric power plant; vibration control

Subjects: Integral transforms in numerical analysis; Control of hydraulic systems; Integral transforms in numerical analysis; Mechanical variables control; Pumped storage stations and plants; Control of electric power systems

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