Method and device for determining abnormal variable pitch of fan and fan control system

A technology of variable pitch motors and abnormalities, which is applied in the monitoring of wind turbines, wind turbines, machines/engines, etc., and can solve problems such as false detection

Active Publication Date: 2019-05-31
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Abstract
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Problems solved by technology

[0005] However, the existing method for determining whether the pitch of the blade is abnormal has the defect of false detection

Method used

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  • Method and device for determining abnormal variable pitch of fan and fan control system
  • Method and device for determining abnormal variable pitch of fan and fan control system
  • Method and device for determining abnormal variable pitch of fan and fan control system

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Embodiment Construction

[0061] Exemplary embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to example embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the example embodiments to those skilled in the art.

[0062] figure 1 A flow chart showing a method for determining an abnormal pitch of a wind turbine according to an embodiment of the present invention.

[0063] refer to figure 1 , in step S100, it is determined whether the pitch angle detected by the main encoder of the predetermined blade of the wind turbine is within a predetermined range. As an example, the main encoder is arranged at the pitch motor of the blade for detecting the pitch angle of the blade.

[0064...

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Abstract

The invention provides a method and device for determining abnormal variable pitch of a fan and a fan control system. The method for determining the abnormal variable pitch of the fan comprises the following steps of (A) determining whether a pitch angle detected by a main encoder of a preset blade of the fan is within a preset range; (B) determining whether a detection result of a blade detectiondevice of the preset blade satisfies a preset condition in response to the fact that the pitch angle detected by the main encoder for the preset blade is within the preset range; (C) acquiring the blade parameters of the preset blade in response to the fact that the detection result of the blade detection device of the preset blade satisfies the preset condition; and (D) determining whether the variable pitch of the preset blade is abnormal or not based on the acquired blade parameters of the preset blade.

Description

technical field [0001] The present invention relates to the field of wind power generation, more specifically, to a method and device for determining abnormal pitch of a wind turbine and a wind turbine control system. Background technique [0002] In wind turbines, the pitch system plays a vital role, and the reliability of the pitch system is directly related to the safety of the wind turbine. Therefore, the accuracy of detecting whether the wind turbine pitches normally is increasingly concerned. [0003] The pitch system of wind turbines is mainly divided into two categories, one is the pitch system using pitch bearings, and the other is the pitch system using toothed belt drive. For these two types of pitch systems, the main encoder is set at the pitch motor of the blade of the fan to detect the blade angle (that is, the pitch angle) of the corresponding blade, so that the pitch angle of the blade can be determined by the detected pitch angle of the blade. Whether the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D17/00
Inventor 马磊
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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