Control method and system for pitch angle of wind turbine generator set, equipment and storage medium

A technology for a wind turbine and a control method, which is applied to the control of wind turbines, mechanical equipment, wind turbines, etc., can solve problems such as power generation loss, and achieve the effect of increasing a fixed slope and avoiding sudden changes in aerodynamic force.

Active Publication Date: 2021-05-14
HUANENG CLEAN ENERGY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the above method only relies on the output power of the wind turbine as the judgment condition, although the pitch change action can be performed in advance under the cond

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  • Control method and system for pitch angle of wind turbine generator set, equipment and storage medium

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041]A pitch angle control method for extreme wind direction variation conditions, such asfigure 1As shown in the current detection cycle, the wind speed wind speed is detected, due to the measurement device, the wind turbines, etc., the measurement wind speed cannot be directly involved in control, so the wind speed measures the wind speed for 10 seconds. Comparing it with a preset wind speed threshold, if it does not exceed its threshold, the unit running state does not change. The setting of the judgment condition here will only be larger than setting the wind speed, this method will only be used, avoiding the loss of power generation due to frequent rapid wind direction changes. For example, the wind speed exceeds the preset wind speed threshold, during the current detection period, due to the measurement device, the wind turbine, etc., due to the measuring device, the wind turbine, etc., due to the measuring device, the wind direction, etc., therefore, the wind directionometer...

Embodiment 2

[0045]A pitch angle control method for extreme wind direction variation conditions, including the steps of:

[0046]Detect the current airometer to measure the wind speed and pass the measurement signal to the PLC controller.

[0047]Since the wind speed measured by the wind speed presents irregular real-time fluctuations, it is not suitable for direct participation in the control algorithm.

[0048]The current measured wind speed is slide averaged for 15 seconds, resulting in average wind speed of the currently 15 seconds.

[0049]Get the set wind speed threshold.

[0050]It is determined whether the wind speed of the current 15 seconds is greater than the set wind speed threshold.

[0051]As the average temperature of the wind speed is less than the set wind speed threshold, the unit is operating normally, without any control action.

[0052]As the current 15 second sliding average wind speed is greater than the set wind speed threshold, go to the next step.

[0053]Detect the current wind direction mete...

Embodiment 3

[0071]A pitch angle control system for extreme wind direction variation conditions, including:

[0072]The wind speed acquisition module is used to obtain real-time measurement wind speeds of wind power units;

[0073]The wind will acquire the module for obtaining real-time measurement winds of wind power sets;

[0074]The data processing module is configured to receive the data of the wind speed acquisition module and the wind to acquire data, and process the real-time wind direction deviation threshold;

[0075]The determination module is used to receive the data of the data processing module, and determine whether the minimum pitch angle of the wind motor set is required.

[0076]The determination module includes a wind speed determination unit, a wind direction determination unit, and a wind direction deviation determination unit;

[0077]Wind speed determination unit: When real-time measurement wind speed is less than or equal to a wind speed threshold, the wind power unit continues to operate;

[...

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Abstract

The invention discloses a control method and system for the pitch angle of a wind turbine generator set, equipment and a storage medium, and belongs to the field of wind power generation. Whether extreme wind direction changes occur or not is judged by detecting the wind direction measured by a wind indicator and comparing the wind direction with a preset threshold value, and the minimum pitch angle is dispatched to cope with the limit load caused by rapid wind direction changes. The positive and negative wind directions measured by the wind indicator are judged, and the load borne by a large part of the set is larger than that borne in a positive wind direction when the minimum pitch angle is increased during flow incoming in the negative wind direction, so that the limit load is reduced by only performing control of increasing the minimum pitch angle on the wind direction of the positive incoming flow. Compared with a control mode without distinguishing the wind directions, the limit load caused by the extreme wind direction changes of the set is further reduced. By means of a mode of judging the wind speed threshold value, the condition that the current measured wind speed exceeds the threshold value serves as the primary condition, and the problem of loss of the generating capacity of the set due to increase of the pitch angle under the condition that the wind speed is low but the bending moment of the set is not impacted is solved.

Description

Technical field[0001]The present invention belongs to the field of wind power, involving a control method, system, device, and storage medium of a wind turbine pitch angle.Background technique[0002]In the design of the international electrician standard IEC61400-13 wind turbine, the wind turbines experience the wind turbine, the wind speed and the wind and the wind direction of the superposition of ECD (direction change) are stressful, in this case The key components of the unit's yaw bearing and other key components are subject to larger bending moments, and it is possible to experience limit loads. Therefore, it is necessary to make the unit operation control strategy adjustment, so that the unit is changed as much as possible to reduce the unit load in the extreme air condition, such as severe wind speed changes.[0003]In response to the above problems, the prior art proposes a solution, including: When the wind turbine is operating normally in the traditional control mode, the mi...

Claims

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Application Information

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IPC IPC(8): F03D7/04F03D7/06
CPCF03D7/042F03D7/06Y02E10/74
Inventor 金强蔡安民林伟荣
Owner HUANENG CLEAN ENERGY RES INST
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