Vibration fault detection system and method for wind turbine generator units

A technology for wind turbines and fault detection, applied in measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problems of long time consumption and low monitoring efficiency, and achieve the effect of saving time, obvious advantages and improving efficiency
CN104048749AInactive Publication Date: 2014-09-17NORTHEAST DIANLI UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NORTHEAST DIANLI UNIVERSITY
Publication Date
2014-09-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a vibration fault detection system and method for wind turbine generator units. Vibration data, including vibration data of front and rear bearings of a gearbox and vibration data of front and rear bearings of a generator, of all parts of the wind turbine generator units are collected through vibration collection nodes by setting up a wireless sensor network, routing nodes passing through all the units are transmitted to a network coordinator node in a multi-hopping mode and transmitted to a monitoring center in the distance through 3G, optical fibers and an etheric multifunctional network, and a negative selection algorithm based on mahalanobis distance is adopted for the monitoring center to achieve remote detection early warning of fault units and fault parts. The vibration fault detection system for the wind turbine generator units comprises the monitoring center, a detection terminal, a database server, the multifunctional network, the network coordinator node, the routing nodes and the vibration collection nodes. According to the system and method, efficiency of the algorithm is improved, the accuracy rate of fault diagnosis is improved, a large amount of time is saved, and the larger the data size is, the more apparent superiority of the algorithm is.
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Description

technical field

[0001] The invention belongs to the technical field of fault detection methods and equipment, and in particular relates to a vibration fault detection system and method for wind turbines. Background technique

[0002] The vibration failure of wind turbines not only reduces the power generation efficiency but also affects its own safe operation, and may even endanger personal safety and cause property losses. Therefore, configuring a real-time wind turbine vibration fault detection and early warning system is an important subject of continuous research and development by researchers.

[0003] At present, the research techniques in our country are roughly divided into process parameter estimation method, state estimation method, signal diagnosis method and artificial intelligence method. The process parameter estimation method uses the residual calculated by the mathematical model to judge and diagnose; the state estimation method uses the filter to monitor th...

Claims

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