Title:
ABNORMALITY DETERMINATION METHOD FOR WIND POWER GENERATION DEVICE. ABNORMALITY DETERMINATION SYSTEM FOR WIND POWER GENERATION DEVICE, AND ABNORMALITY DETERMINATION PROGRAM FOR WIND POWER GENERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/054483
Kind Code:
A1
Abstract:
This abnormality determination method for a wind power generation device comprises: a measurement step (Step S1) for measuring sound emitted from a wind power generation device and recording acoustic data; an analysis step (Step S2) for performing spectrogram analysis on the acoustic data recorded in the measurement step in terms of a frequency-time axis domain in which frequency characteristics are indicated with a time change using short-time Fourier transformation or wavelet transformation; a detection step (Step S3) for detecting, on the basis of an analysis result in the analysis step, a signal component emitted from an abnormal site in the wind power generation device in a time corresponding to the rotation of the wind power generation device; and a determination step (Step S5) for determining that the wind power generation device is in an abnormal state when the signal component detected in the detection step is equal to or more than a given threshold.
Inventors:
HONDA IWAO (JP)
NAKAMURA HIROFUMI (JP)
MATSUURA MASAMI (JP)
NAKAMURA HIROFUMI (JP)
MATSUURA MASAMI (JP)
Application Number:
PCT/JP2021/029471
Publication Date:
March 17, 2022
Filing Date:
August 10, 2021
Export Citation:
Assignee:
FUDO GIKEN IND CO LTD (JP)
International Classes:
F03D17/00; F03D1/06; G01H17/00; G01M99/00
Foreign References:
| JP2013185507A | 2013-09-19 | |||
| JP2010281279A | 2010-12-16 | |||
| JP2016519292A | 2016-06-30 | |||
| US20160033580A1 | 2016-02-04 | |||
| JP2001349775A | 2001-12-21 | |||
| JP2009020090A | 2009-01-29 | |||
| JP5207074B2 | 2013-06-12 |
Attorney, Agent or Firm:
ATSUMI,Motoyuki (JP)
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