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Blade icing model building method and icing condition monitoring method and device

A blade and state technology, which is applied in the field of blade icing model construction, can solve the problems of difficulty, low monitoring accuracy of wind turbine blade icing state, and determining the icing state of wind turbines, so as to improve the monitoring accuracy.

Active Publication Date: 2016-04-20
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the result of the blade icing status determined by the above method greatly depends on the accuracy of the measurement data, and the topography and topography of the current geographic location of the wind turbine will affect the vertical movement of the air, and different topography will make the bottom of the cloud The height, atmospheric liquid water content and rainfall are different, so it is difficult to accurately determine the current icing state of the wind turbine through the above method, resulting in low monitoring accuracy of the icing state of the blades of the wind turbine

Method used

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  • Blade icing model building method and icing condition monitoring method and device
  • Blade icing model building method and icing condition monitoring method and device

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Embodiment 1

[0030] figure 1 It is a flowchart showing a method for constructing a wind turbine blade icing model according to the first embodiment of the present invention. By including Figure 5 The device shown performs the method.

[0031] Reference figure 1 , S110, obtain a variety of sample data reflecting the icing state, and generate a correlation coefficient matrix of all sample data according to the sample data.

[0032] Among them, the icing state of blades can include multiple types, such as meteorological icing and equipment icing, etc. Meteorological icing can refer to the state of icing that has reached the condition that can freeze, and the icing of equipment can be left over by ice. The state on the surface of the equipment, or the icing state where the blade icing interferes with the normal operation of the wind turbine.

[0033] Specifically, since areas with rich wind energy resources are mostly plateaus, mountain tops and ridges, etc., and these areas are usually low in temp...

Embodiment 2

[0041] figure 2 It is a flowchart showing a method for constructing a wind turbine blade icing model according to the second embodiment of the present invention, and the embodiment can be regarded as figure 1 Another specific implementation plan.

[0042] Reference figure 2 , Where steps S210 and S220 may be a refinement of step S110 in the first embodiment above, and the details are as follows:

[0043] S210: Obtain a variety of sample data reflecting the icing state.

[0044] Specifically, considering that the influencing factors that cause icing of wind turbine blades may involve the external environment where the wind turbine is located and the wind turbine itself, a variety of influences that can reflect the state of blade icing can be set for the above two aspects involved. factor. For the external environment, the corresponding influencing factors can include temperature, cloud height, terrain parameters, sunshine time, air density, humidity, dew point and wind speed, etc. ...

Embodiment 3

[0057] image 3 It is a flowchart showing a method for monitoring the icing state of a wind turbine blade according to the third embodiment of the present invention. By including Figure 7 The device shown performs the method.

[0058] Reference image 3 , S310, obtain a variety of sample data reflecting the icing state.

[0059] Among them, the multiple sample data reflecting the icing state may be data values ​​of sample data corresponding to all influencing factors that cause the wind turbine to freeze.

[0060] The foregoing processing of acquiring various sample data reflecting the icing state can be performed by corresponding sensors. For details, please refer to the above figure 1 Example or as figure 2 The embodiments of, will not be repeated here. In addition to directly acquiring a variety of sample data reflecting the icing state through the corresponding sensor, the sample data can also be acquired in other ways, for example, the data values ​​of the sample data corresp...

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Abstract

The embodiments of the invention provide a blade icing model building method and an icing condition monitoring method and device. The method comprises the steps: acquiring a variety of sample data reflecting an icing condition, and generating a correlation coefficient matrix for all the sample data according to the sample data; carrying out factor analysis on the correlation coefficient matrix so as to obtain a factor loading matrix, which aims at contribution of a plurality of preset common factors, of each sample datum, wherein each factor loading matrix serves as a blade icing model of a wind generating set, and each common factor is a icing type. By adopting the embodiments of the invention, the accuracy of monitoring icing conditions of blades of the wind generating set can be improved.

Description

Technical field [0001] The invention relates to wind power generation technology, in particular to a method for constructing a blade icing model, a method and a device for monitoring the icing state. Background technique [0002] With the continuous expansion of the construction scale of wind farms in cold climate areas, the blades of wind turbines operating in this environment are prone to icing, which affects the power generation efficiency of the wind turbines. Therefore, how to monitor the icing state of the blades becomes an urgent need to solve The problem. [0003] Usually, the current icing state of wind turbines can be monitored by icing climatic conditions simulation, that is, the climatic conditions that cause the wind turbines to freeze through the geographical location and geographical environment of the wind turbines are constructed, and then the wind power The icing weather conditions of the unit are compared with the currently monitored weather conditions to determ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D80/40F03D17/00
CPCY02B10/30Y02E10/72
Inventor 乔志强唐新安李康
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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