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Wind generating set blade load monitoring method and device

A technology of wind turbines and blades, which is applied in the monitoring of wind turbines, wind turbines, engines, etc., which can solve the problems of poor operating reliability of the unit and the inability to effectively monitor the real-time load status of the blades, so as to improve operational reliability and improve operational efficiency. Safety and the effect of ensuring operational reliability

Active Publication Date: 2018-09-28
ZHEJIANG WINDEY
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Problems solved by technology

[0004] In order to overcome the deficiencies of the existing wind turbine blade load detection methods, which cannot effectively monitor the real-time loading status of the blades and the operating reliability of the unit is poor, the present invention proposes a method for effectively monitoring the real-time loading status of the blades and improving the operating reliability of the unit. Wind turbine blade load monitoring method and device

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  • Wind generating set blade load monitoring method and device
  • Wind generating set blade load monitoring method and device
  • Wind generating set blade load monitoring method and device

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] refer to Figure 1-Figure 3 , a wind turbine blade load monitoring method, the method comprising:

[0027] a) Use the bolt pre-tightening force detection device to obtain the pre-tightening force data of the blade root connection bolts;

[0028] b) The signal processing device analyzes the measured data, obtains the measured values ​​of the axial load F and the tipping moment M of the blade, and combines the preset limit load and allowable load of the blade to analyze the load condition and operation of the blade. state, and send the blade state signal to the main control system, and the main control system adjusts the control strategy of the unit according to the corresponding blade state: F l , M l is the preset limit load value of the blade, F p , M p Allowable load value for the preset blade. When Fp And Mp When F > F l or M>M l In other cases, it is...

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Abstract

The invention discloses a wind generating set blade load monitoring method. The method comprises the following steps that (a) the pretightening force data of blade root connecting bolts are obtained by utilizing a bolt pretightening force detection device; and (b) a signal processing device analyzes the measured data so as to obtain measured values of the axial load F and the tipping moment M of each blade, the values of the preset limit load of each blade and the allowable load are combined, the load condition and the operation state of each blade are analyzed, the blade state signal is sentto a main control system, and the main control system adjusts a set control strategy according to the corresponding state of each blade. The invention further provides a wind generating set blade loadmonitoring device. According to the wind generating set blade load monitoring method and device, the real-time load condition of each blade and the set operation reliability can be effectively monitored.

Description

technical field [0001] The invention belongs to the field of wind power generation, and in particular relates to a method and device for monitoring blade load of a wind power generating set. Background technique [0002] The competition in the wind power market is increasingly intensified, and the cost performance and reliability of wind turbines have become the key factors to occupy the market. Reducing the overall cost of the unit and improving the operational reliability of the unit are the main directions of technological R&D and innovation of the current complete machine manufacturers. Blades are the main components for capturing wind energy, and their loading conditions seriously affect the reliability of the unit's operation. Therefore, it is very necessary to monitor the blade load of wind turbines in real time. [0003] The key to wind turbine blade load monitoring is whether the load signal can be accurately measured. At present, the common measurement method is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D17/00
CPCF03D17/00
Inventor 何家莹应华冬沈凤亚罗勇水芮品先
Owner ZHEJIANG WINDEY
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