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Load reducing method and system of wind generating set

A technology for wind turbines and load reduction, which is applied to wind turbines, monitoring of wind turbines, control of wind turbines, etc., can solve problems such as low accuracy, and achieve better results with improved safety

Active Publication Date: 2019-04-19
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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Problems solved by technology

Moreover, the accuracy of input judgment conditions often depends on external environmental conditions and parameters, and its accuracy may not be high

Method used

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  • Load reducing method and system of wind generating set

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0032] like figure 1 As shown, the load reduction method of the wind power generating set in this embodiment includes: S1. Obtaining the measurement data of the bolt connection position in the wind generating set; S2. Analyzing the measurement data through a large database, when the analysis result does not meet the preset trigger Conditions continue to run normally, and jump to step S3 when the analysis result meets the preset trigger condition; S3. Send a preset logic command to the wind turbine to achieve the purpose of reducing the load with the actual wind turbine.

[0033] In this embodiment, the bolt connection positions in step S1 include: the flange surface of the tower, the connection surface between the blade root flange and the pitch bearing, and the...

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Abstract

The invention discloses a load reducing method and system of a wind generating set. The method comprises the steps that S1, measuring data of a bolt connecting position of the wind generating set areobtained; S2, the measuring data are subjected to analysis through a big database, when the analysis result does not meet the preset trigger condition, normal running continues, and when the analysisresult meets the preset trigger condition, skipping to the S3 is operated; S3, a preset logic instruction is sent to the wind generating set, and the aim of reducing the load is achieved through the actual wind generating set; and the method and system have the beneficial effects that the fan running state can be predicted in advance, whether the fan undergoes the large load or not can be predicted in advance, the control strategy can be adjusted in advance, the large load is reduced or avoided, the load reducing aim of the wind generating set is achieved, safety of the wind generating set isgreatly improved, and the cost of the wind generating set is reduced.

Description

technical field [0001] The present invention relates to the technical field of control of wind power generators, in particular to a load reduction method and system for wind power generators. Background technique [0002] The load of the wind turbine is the input of the design of all components, and the size of the load directly determines the cost of the wind turbine. Therefore, within a reasonable range, it is very beneficial to the design of the fan to reduce the load as much as possible. At present, most of the load reduction methods are to reduce the load by detecting the change of wind speed and selecting different control parameters or strategies. Or according to the different states of the wind turbine, choose different control strategies and pitch rate to reduce the load. These load reduction methods are often effective when extreme events have occurred or are occurring, and have produced or are producing adverse effects on the unit. Moreover, the accuracy of inp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/00
CPCF03D7/00F05B2260/82F03D17/00Y02E10/72
Inventor 王磊廖戡武钟杰蒋红武巫发明李秀珍李慧新刘红文蒋韬李洲李音泉袁坚汪静
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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