Method and device for determining fan blade parameters

A technology for determining fan blades and parameters, which is applied to wind turbines, monitoring of wind turbines, engines, etc., can solve problems such as high maintenance costs, influence on control effects, and parameter deviations, and achieve the effects of reducing maintenance costs and improving control effects

Active Publication Date: 2019-08-02
BEIJING ETECHWIN ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above method has the following disadvantages: First, the blade parameters on the nameplate only reflect the static characteristics of the blade, and there is a certain deviation from the parameters reflected on the hub
If the blade parameters on the nameplate are still used for control, it will inevitably affect the control effect; secondly, when the blades are replaced due to damage or other reasons, or the wind turbines in the same wind farm use blades from different manufacturers, in order to ensure that the wind turbines operate better Stability, higher power generation, and smaller loads, such as the control software of the pitch system and the main control system, will also change accordingly, resulting in higher maintenance costs

Method used

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  • Method and device for determining fan blade parameters
  • Method and device for determining fan blade parameters
  • Method and device for determining fan blade parameters

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Experimental program
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Effect test

Embodiment 1

[0021] figure 1 This is a schematic flowchart of a method for determining parameters of a wind turbine blade according to Embodiment 1 of the present invention, and the method can be executed in, for example, a pitch controller of a pitch system of a wind turbine. Used to detect wind turbine blade parameters during operation of wind turbines, such as figure 1 As shown, the method for determining the parameters of the fan blade includes:

[0022] Step 110: Detect the structural parameters of the fan blade.

[0023] Here, the structural parameters of the fan blade may include at least one of the following: mass, moment of inertia and radius of center of mass, but not limited thereto.

[0024] Step 120: Obtain the length and / or aerodynamic parameters of the fan blade that match the detected structural parameters according to the preset corresponding relationship between each structural parameter and the length and / or aerodynamic parameter of the fan blade.

[0025] Specificall...

Embodiment 2

[0029] figure 2 This is a schematic flowchart of a method for determining parameters of a fan blade according to Embodiment 2 of the present invention, and the embodiment can be regarded as figure 1 Another specific implementation scheme. The wind turbine blade parameter determination method can be implemented in a pitch system of a wind turbine.

[0030] Wherein, step 210 and step 220 may be a refinement of step 110 in the above-mentioned first embodiment, and the details are as follows:

[0031] Step 210: When each fan blade is in the first detection state, obtain the diameter of the fan blade whose azimuth angle is the first angle, and calculate the mass of the fan blade according to the diameter of the fan blade.

[0032] It should be noted that the above-mentioned first detection state may include: each fan blade is in a feathering position, and the azimuth angle of any fan blade is a preset first angle. Here, the preset first angle may be 0 degrees or 180 degrees. f...

Embodiment 3

[0093] Figure 7 This is a schematic structural diagram of the fan blade parameter determination device according to the third embodiment of the present invention. It can be used to execute the steps of the fan blade parameter determination method of the first embodiment of the present invention.

[0094] refer to Figure 7 , the fan blade parameter determination device includes a parameter detection module 710 and a parameter acquisition module 720 .

[0095] The parameter detection module 710 is used to detect the structural parameters of the fan blade.

[0096] The parameter obtaining module 720 is configured to obtain the length and / or aerodynamic parameters of the fan blade matching the detected structural parameters according to the preset corresponding relationship between each structural parameter and the length and / or aerodynamic parameters of the fan blade.

[0097] Here, the structural parameters of the fan blade may include at least one of the following: mass, m...

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PUM

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Abstract

The embodiment of the invention provides a method and device for determining the parameters of draught fan blades. The method and device are used for detecting the parameters of the draught fan blades in the operation process of a wind turbine generator set. The method comprises the steps that the structural parameters of the draught fan blades are detected; according to the correspondence relationships between all the preset structural parameters and the length and / or aerodynamic parameters of the draught fan blades, the length and / or aerodynamic parameter, matched with the detected structural parameter, of the draught fan blades can be obtained. By the adoption of the method and device for determining the parameters of the draught fan blades, the relevant parameters of the draught fan blades can be accurately and automatically obtained in the operation state of the wind turbine generator set, and therefore the data basis is provided for a control system of the wind turbine generator set. In this way, the control effect is improved, and the maintenance cost of the control system is lowered at the same time.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to a method and a device for determining parameters of a fan blade. Background technique [0002] The wind turbine blade is one of the most critical components of a wind turbine, which directly affects the performance of the entire wind turbine. At present, wind turbines are mainly divided into two types: fixed pitch and variable pitch. Taking the pitch wind turbine as an example, its fan blades (roots) are connected to the hub through pitch bearings, and each fan blade has its own independent electronically controlled and synchronized pitch drive system. The pitch drive system is meshed and linked with the inner teeth of the pitch bearing through a reducer gear to realize the pitch function of the fan blade. For example, by adjusting the pitch angle of the fan blades in real time, the main shaft speed of the fan can always be controlled at an ideal constant speed within the se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D17/00
Inventor 马磊刘世军李庆江
Owner BEIJING ETECHWIN ELECTRIC
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