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Wind turbine control method and device

A wind turbine and control method technology, which is applied in the control of wind turbines, monitoring of wind turbines, wind turbines, etc., can solve the problems of overspeed shutdown of wind turbines, shutdown of wind turbines due to faults, etc., so as to improve the power generation efficiency. Effect

Active Publication Date: 2018-10-19
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] The purpose of the present invention is to adjust the rotational speed of the wind generating set by judging whether the current wind condition is a strong gust wind condition, so that the rotational speed of the wind generating set fluctuates on the basis of a lower level, avoiding the speed exceeding the threshold The wind turbine will shut down in case of failure, so as to solve the problem of overspeed shutdown of the wind turbine under strong gust wind conditions, and improve the power generation efficiency of the wind turbine

Method used

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Experimental program
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Effect test

Embodiment 1

[0021] figure 1 It is a flow chart showing the control method of the wind power generating set according to the first embodiment of the present invention. by including as image 3 The control device shown executes the control method.

[0022] refer to figure 1 , in step S110, the first wind speed at the current moment is acquired.

[0023] Specifically, the rated speed of the wind turbine is usually fixed. When a strong gust occurs, the speed of the wind turbine fluctuates greatly, so it is easy to exceed the overspeed fault threshold, causing the wind turbine to fail and shut down. Therefore, through The anemometer installed in the wind turbine can measure the instantaneous wind speed outside in real time. When the wind power generating set is working normally, start the anemometer and detect the instantaneous wind speed (namely the first wind speed) outside at the current moment.

[0024] In step S120, if the first wind speed is greater than the wind speed threshold, a ...

Embodiment 2

[0033] figure 2 is a flow chart showing a control method for a wind power generating set according to Embodiment 2 of the present invention, and this embodiment can be regarded as figure 1 Another specific implementation scheme of .

[0034] refer to figure 2 , in step S210, the first wind speed at the current moment is acquired.

[0035] The step content of step S210 is the same as the step content of step S110 in the first embodiment above, and will not be repeated here.

[0036] In step S220, if the first wind speed is greater than the wind speed threshold, a first average pitch angle within a first preset time period is acquired.

[0037] The step content of step S220 is the same as the step content of step S120 in the first embodiment above, and will not be repeated here.

[0038] In addition, the first preset duration can have multiple representation forms. In order to fully and accurately indicate the current strong gust state, the end time point of the first pres...

Embodiment 3

[0083] Based on the same technical idea, image 3 It is a logic block diagram showing the control device of the wind power generating set according to the third embodiment of the present invention. refer to image 3 , the control device includes a first wind speed acquisition module 310 , a first pitch angle acquisition module 320 and a first sending module 330 .

[0084] The first wind speed acquisition module 310 is used to acquire the first wind speed at the current moment.

[0085] The first pitch angle acquisition module 320 is configured to acquire the first average pitch angle within the first preset time period if the first wind speed is greater than the wind speed threshold, wherein the end time point of the first preset time length is the current moment .

[0086] The first sending module 330 is used to send the first speed regulation instruction for triggering the reduction of the rated speed of the wind power generating set to the pitch control of the wind gener...

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Abstract

The invention provides a control method and a device of a wind driven generator set. The control method comprises the steps of: obtaining a first wind speed at the present time; obtaining a first average pitch angle in a first preset time length if the first wind speed is higher than the a wind speed threshold, wherein an ending time point of the first preset time length is the present time; and sending a first speed adjusting instruction, for triggering reduction of a rared rotating speed of the wind driven generator set, to a variable pitch controller of the wind driven generator set if the first average pitch angle is higher than a pitch angle threshold. The control method can solve the problem of overspeed stop of the wind driven generator set under the wind condition of strong gust to improve the power generation efficiency of the wind power generator set.

Description

technical field [0001] The invention relates to wind power generation technology, in particular to a control method and device for a wind power generating set. Background technique [0002] With the continuous development of new energy technology, wind power generation technology is more and more favored by people, and how to control the wind power generation unit has become a hot issue in people's research. [0003] After the wind turbine is started and the wind speed reaches the rated wind speed, it usually works at rated power, rated speed and rated torque. If there is a strong wind that exceeds the rated wind speed (but does not reach the cut-out wind speed of the wind turbine), the impeller speed of the wind turbine will increase instantaneously, so that the wind turbine will be shut down due to over-speed protection, thereby reducing the wind turbine. power generation efficiency. Contents of the invention [0004] The purpose of the present invention is to adjust t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/00F03D17/00
CPCF03D7/0256F03D7/0276Y02E10/72
Inventor 李强周杰孙涛
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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