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Fan blade fault detection method and system

A technology for fan blade and fault detection, which is applied to wind turbines, monitoring of wind turbines, engines, etc., can solve problems such as instability, complex on-site vibration conditions, long learning and training time for diagnostic models, etc., and achieve the goal of improving diagnostic reliability Effect

Pending Publication Date: 2022-03-22
BEIJING NAVROOM TECH CO LTD
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Problems solved by technology

[0006] In view of the above-mentioned problems, the purpose of the present invention is to provide a fan blade fault detection method and system to solve the problem that the signal processing-based diagnosis method makes the on-site vibration complex and unstable, and the fault diagnosis method based on artificial intelligence exists due to the large scale. The problem of long model learning and training time

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  • Fan blade fault detection method and system
  • Fan blade fault detection method and system

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Embodiment Construction

[0046] Diagnosis method based on signal processing - the field vibration situation is complex and unstable, and it is still a technical problem to separate the vibration signal from the noise signal. The signal of small cracks is often annihilated by the noise signal or the overall vibration signal, and the current fault monitoring system is mainly Judging whether there is a fault based on whether the fault characteristics exceed the set threshold, it is not yet possible to perform location detection; fault diagnosis method based on artificial intelligence - although the fault diagnosis method based on artificial intelligence is fast and convenient, it cannot incorporate empirical knowledge. A large number of sample learning is required to ensure the reliability of the diagnosis, and there is a problem that the diagnosis model learning and training time is too long due to the large scale.

[0047] In view of the above problems, the present invention provides a fan blade fault d...

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Abstract

The invention provides a fan blade fault detection method, which comprises the following steps: firstly enabling an optical fiber sensor to correspond to a fan blade, then collecting the vibration frequency of the fan blade through the optical fiber sensor, judging whether the fan blade is damaged according to the vibration frequency, and if the fan blade is damaged, judging whether the fan blade is damaged. If yes, the damaged fan blade is detected through a fault detection discriminator to obtain a fault category result of the fan blade, so that the damaged position of the fan blade is recognized, the fault category of the fan blade is calculated, fault diagnosis of the fan blade is achieved, and the diagnosis reliability is improved.

Description

technical field [0001] The present invention relates to the technical field of fault diagnosis, and more specifically, to a method and system for fault detection of fan blades. Background technique [0002] A wind turbine is a power device that converts wind energy into mechanical work, which drives the rotor to rotate, and finally outputs alternating current. Wind turbines are generally composed of components such as wind rotors, generators (including devices), steering devices (tail fins), towers, speed-limiting safety mechanisms, and energy storage devices. [0003] With the increasingly serious energy crisis and environmental problems, countries around the world are scrambling to develop renewable emerging energy sources. my country's long-term plan clearly supports "research and development of large-scale wind power generation equipment", and wind power equipment has developed rapidly. With the rapid development of wind power, the high operation and maintenance costs o...

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Application Information

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IPC IPC(8): F03D17/00
CPCF03D17/00Y02E10/72
Inventor 庞涛马征何伟秦大林
Owner BEIJING NAVROOM TECH CO LTD
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