Method and apparatus for diagnosing blades of wind turbine

A technology of a wind turbine and a detection method, which is applied to the monitoring of wind turbines, wind turbines, wind energy power generation, etc., can solve the problems of time-consuming and inconvenient detection methods.

Inactive Publication Date: 2017-03-01
王昭男 +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method of detection is inconvenient and time-consuming

Method used

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  • Method and apparatus for diagnosing blades of wind turbine
  • Method and apparatus for diagnosing blades of wind turbine
  • Method and apparatus for diagnosing blades of wind turbine

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Embodiment Construction

[0027] A main part of a wind turbine is the blade, and the number of blades of a general wind turbine is 3, but the blade diagnosis method of the wind turbine proposed in this case can be applied to a wind turbine with any number of blades. The traditional wind turbine blade detection method must first stop the operation of the wind turbine to detect the blade of the wind turbine. However, the blade diagnosis method of the wind turbine proposed in this case can detect the wind turbine blade when the wind turbine is operating. blade.

[0028] figure 1 It is a schematic diagram of the comparison between the time domain and the time-frequency domain of a normal wind turbine and a wind turbine with damaged blades. The area 11 on the left represents the time domain diagram (the upper black curve) and the time-frequency domain diagram (the energy diagram shown in red below) of the wind turbine with damaged blades. The area 13 on the right shows the time domain diagram (the upper black...

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Abstract

The invention provides a method and apparatus for diagnosing blades of a wind turbine. The method includes steps of acquiring, via a microphone, an operation sound of the wind turbine when the wind turbine is under operation; transforming the operation sound into a time-frequency spectrum; integrating the time-frequency spectrum over time to generate a marginal spectrum; determining whether any blade of the wind turbine is damaged according to the marginal spectrum and a reference curve.

Description

Technical field [0001] The invention provides a method for diagnosing blades of a wind power generator, in particular to a method for diagnosing blades when the wind power generator is in operation. Background technique [0002] Wind energy is the energy generated by the flow of wind, while wind power uses special power generating devices to convert wind energy into electrical energy. Because wind energy is clean, renewable and abundant energy, and the process of wind power generation does not emit greenhouse gas, wind power generation has gradually become a new alternative to fossil fuel power generation. [0003] The wind power generation device mainly includes a wind blade mechanism with multiple blades, a transmission mechanism and a power generation device. When the wind power drives the wind blade mechanism, the wind blade mechanism rotates to generate mechanical energy, which is transmitted to the power generating device through the transmission mechanism, and the power gen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D17/00
CPCF03D17/00F05B2260/80F05B2270/81Y02E10/72
Inventor 王昭男蔡进发陈一成汤耀期秦正宇
Owner 王昭男
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