This paper proposes new seismic-based methods for use in the wind energy industry with a focus on wind turbine condition monitoring. Fourteen Streckeisen STS-2 Broadband seismometers and two 3D sonic anemometers are deployed in/near an operating wind farm to collect the data used in these proof-of-principle analyses. The interquartile mean (IQM) value of power spectral density (PSD) of the seismic components in 10-minute time series are used to characterize the spectral signatures (i.e. frequencies with enhanced variance) in ground vibrations deriving from vibrations of wind turbine subassemblies. A power spectral envelope approach is taken in which the probability density function of seismic PSD is developed using seismic data collected under normal turbine operation. These power spectral envelopes clearly show the energy distribution of wind-turbine-induced ground vibrations over a wide frequency range. Singular PSD lying outside the power spectral envelopes can be easily identified, and are used herein along with SCADA data to diagnose the associated sub-optimal turbine operating conditions. Illustrative examples are given herein for periods with yaw-misalignment and excess tower acceleration. It is additionally shown that there is a strong association between drivetrain acceleration and seismic spectral power in a frequency band of 2.5–12.5 Hz. The long-term goal of the research is development of seismic-based condition monitoring (SBCM) for wind turbines. The primary advantages of SBCM are that the approach is low-cost, non-invasive and versatile (i.e., one seismic sensor monitoring for multiple turbine subassemblies).
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ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum
June 26–30, 2017
Charlotte, North Carolina, USA
Conference Sponsors:
- Power Division
- Advanced Energy Systems Division
- Solar Energy Division
- Nuclear Engineering Division
ISBN:
978-0-7918-5761-8
PROCEEDINGS PAPER
Use of Seismic Analyses for the Wind Energy Industry Available to Purchase
R. J. Barthelmie
R. J. Barthelmie
Cornell University, Ithaca, NY
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Weifei Hu
Cornell University, Ithaca, NY
S. C. Pryor
Cornell University, Ithaca, NY
F. Letson
Cornell University, Ithaca, NY
R. J. Barthelmie
Cornell University, Ithaca, NY
Paper No:
POWER-ICOPE2017-3538, V002T09A015; 8 pages
Published Online:
September 5, 2017
Citation
Hu, W, Pryor, SC, Letson, F, & Barthelmie, RJ. "Use of Seismic Analyses for the Wind Energy Industry." Proceedings of the ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. Charlotte, North Carolina, USA. June 26–30, 2017. V002T09A015. ASME. https://doi.org/10.1115/POWER-ICOPE2017-3538
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