CN110863945A - Blade control system, method and device and readable storage medium - Google Patents

Blade control system, method and device and readable storage medium Download PDF

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Publication number
CN110863945A
CN110863945A CN201911221621.1A CN201911221621A CN110863945A CN 110863945 A CN110863945 A CN 110863945A CN 201911221621 A CN201911221621 A CN 201911221621A CN 110863945 A CN110863945 A CN 110863945A
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China
Prior art keywords
time
stall
current real
power
wind speed
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Pending
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CN201911221621.1A
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Chinese (zh)
Inventor
杜洋
兰涌森
何国华
杜炜
曹鹏
杨微
周迎九
周庆
文华
黄健
杨晓婷
张华炼
窦玮然
柯余东
杨建�
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CSIC Haizhuang Windpower Co Ltd
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CSIC Haizhuang Windpower Co Ltd
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Priority to CN201911221621.1A priority Critical patent/CN110863945A/en
Publication of CN110863945A publication Critical patent/CN110863945A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/10—Purpose of the control system
    • F05B2270/101—Purpose of the control system to control rotational speed (n)
    • F05B2270/1012—Purpose of the control system to control rotational speed (n) to prevent underspeed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/32—Wind speeds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/335—Output power or torque
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Abstract

The application discloses blade control system includes: the monitoring module is used for monitoring the current real-time power and the current real-time wind speed of the wind turbine generator; the judging module is used for judging whether the wind turbine generator is in a stall state or not according to the current real-time power and the current real-time wind speed, and if so, the stall control module is triggered; the stall control module is used for controlling the wind turbine generator in a stall control mode, and the stall control mode comprises a preset minimum control angle and a preset control time period of the blade. According to the method and the device, the blade control system continuously monitors real-time power and real-time wind speed in the whole process, whether stall occurs is judged according to set standards, the mode is automatically switched when the stall occurs, measures are actively taken, power loss caused by the stall of the blade is avoided, the defect of manual responsibility in the prior art is overcome, and power output of the blade in the speed per hour state is effectively improved. The application also correspondingly discloses a blade control method, a device and a readable storage medium.

Description

Blade control system, method and device and readable storage medium
Technical Field
The invention relates to the field of wind driven generator control, in particular to a blade control system, a method, a device and a readable storage medium.
Background
When the blade of the large-scale wind generating set operates normally, the surface of the blade has separated flow. The relative thickness of the wind turbine blade root is large, and meanwhile due to the limitation of the torsional angle of the blade root in practical production, the flow separation phenomenon inevitably occurs when the airfoil of the part works under a large attack angle. The presence of the separation region enables the blade root to provide only a small amount of lift; meanwhile, under the action of complex reasons such as wind field conditions, natural environment, unit control and the like, the unit operation may deviate from the stall range of the original blade design, the inherent stall area of the blade is enlarged, the stall range is enlarged, and the power output of the blade is reduced.
The current stall treatment is that when the power is obviously lower than a normal value, speed per hour is judged manually, then the minimum pitch angle is adjusted manually, and the stall condition is improved by changing the attack angle. The limitation of this approach is that each time manual intervention is required, it cannot be handled in time resulting in power loss.
Therefore, how to provide a solution to the above technical problems is a problem to be solved by those skilled in the art.
Disclosure of Invention
Accordingly, the present invention is directed to a blade control system, method, apparatus and readable storage medium. The specific scheme is as follows:
a vane control system comprising:
the monitoring module is used for monitoring the current real-time power and the current real-time wind speed of the wind turbine generator;
the judging module is used for judging whether the wind turbine generator is in a stall state or not according to the current real-time power and the current real-time wind speed, and if so, the stall control module is triggered;
the stall control module is used for controlling the wind turbine generator in a stall control mode, and the stall control mode comprises a preset minimum control angle and a preset control time period of the blade.
Preferably, the judging module is specifically configured to:
judging whether the wind turbine generator is in a stall state or not according to a stall judgment condition;
the stall determination condition specifically includes:
the power is not limited when the wind turbine generator operates, and the time length that the current real-time power is smaller than the standard power corresponding to the current real-time wind speed exceeds the preset time length.
Preferably, the corresponding relationship between the standard power and the current real-time wind speed is specifically as follows:
Figure BDA0002301014860000021
whereinP is the standard power, v is the current real-time wind speed, P1And P2Respectively corresponding to a first wind speed v1And a second wind speed v2The first preset power and the second preset power.
Correspondingly, the invention also discloses a blade control method, which comprises the following steps:
monitoring the current real-time power and the current real-time wind speed of the wind turbine generator;
judging whether the wind turbine generator is in a stall state or not according to the current real-time power and the current real-time wind speed;
if so, controlling the wind turbine generator in a stall control mode, wherein the stall control mode comprises a preset minimum control angle and a preset control time period of the blade.
Preferably, the determining, according to the current real-time power and the current real-time wind speed, whether the wind turbine generator is in a stall state includes:
judging whether the wind turbine generator is in a stall state or not according to a stall judgment condition;
the stall determination condition specifically includes:
the power is not limited when the wind turbine generator operates, and the time length that the current real-time power is smaller than the standard power corresponding to the current real-time wind speed exceeds the preset time length.
Preferably, the corresponding relationship between the standard power and the current real-time wind speed is specifically as follows:
Figure BDA0002301014860000022
wherein P is the standard power, v is the current real-time wind speed, P1And P2Respectively corresponding to a first wind speed v1And a second wind speed v2The first preset power and the second preset power.
Preferably, the preset minimum control angle and the preset control time period are set according to the geographical environment of the wind field and/or the type of the fan.
Preferably, after determining whether the wind turbine generator is in a stall state according to the current real-time power and the current real-time wind speed, the method further includes:
and if not, controlling the wind turbine generator in a non-stall control mode.
Correspondingly, the invention also discloses a blade control device, which comprises:
a memory for storing a computer program;
a processor for implementing the steps of the blade control method according to any of the above when executing the computer program.
Accordingly, the invention also discloses a readable storage medium having stored thereon a computer program which, when being executed by a processor, carries out the steps of the blade control method according to any of the above.
The application discloses blade control system includes: the monitoring module is used for monitoring the current real-time power and the current real-time wind speed of the wind turbine generator; the judging module is used for judging whether the wind turbine generator is in a stall state or not according to the current real-time power and the current real-time wind speed, and if so, the stall control module is triggered; the stall control module is used for controlling the wind turbine generator in a stall control mode, and the stall control mode comprises a preset minimum control angle and a preset control time period of the blade. According to the method and the device, the blade control system continuously monitors real-time power and real-time wind speed in the whole process, whether stall occurs is judged according to set standards, the mode is automatically switched when the stall occurs, measures are actively taken, power loss caused by the stall of the blade is avoided, the defect of manual responsibility in the prior art is overcome, and power output of the blade in the speed per hour state is effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a block diagram of a blade control system according to an embodiment of the present invention;
FIG. 2 is a flow chart illustrating steps of a method for controlling a blade according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating a standard power versus wind speed relationship according to an embodiment of the present invention;
fig. 4 is a structural distribution diagram of a vane control device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The current stall treatment is that when the power is obviously lower than a normal value, speed per hour is judged manually, then the minimum pitch angle is adjusted manually, and the stall condition is improved by changing the attack angle. The limitation of this approach is that each time manual intervention is required, it cannot be handled in time resulting in power loss.
According to the method and the device, the blade control system continuously monitors real-time power and real-time wind speed in the whole process, whether stall occurs is judged according to set standards, the mode is automatically switched when the stall occurs, measures are actively taken, power loss caused by the stall of the blade is avoided, the defect of manual responsibility in the prior art is overcome, and power output of the blade in the speed per hour state is effectively improved.
An embodiment of the present invention discloses a blade control system, as shown in fig. 1, including:
the monitoring module 01 is used for monitoring the current real-time power and the current real-time wind speed of the wind turbine generator;
the judging module 02 is used for judging whether the wind turbine generator is in a stall state or not according to the current real-time power and the current real-time wind speed, and if so, triggering the stall control module 03;
a stall control module 03 for controlling the wind turbine in a stall control mode, the stall control mode comprising a preset minimum control angle and a preset control period of the blades.
It will be appreciated that typically a non-stall control module 04 triggered by the decision module 02 will also be included in the blade control system for controlling the wind turbine with a Power Speed Controller (PSC).
Preferably, the judging module 02 is specifically configured to:
judging whether the wind turbine generator is in a stall state or not according to the stall judgment condition;
the stall determination conditions specifically include:
the power is not limited when the wind turbine generator operates, and the time length that the current real-time power is smaller than the standard power corresponding to the current real-time wind speed exceeds the preset time length.
Preferably, the corresponding relationship between the standard power and the current real-time wind speed is specifically as follows:
Figure BDA0002301014860000051
wherein P is standard power, v is current real-time wind speed, P1And P2Respectively corresponding to a first wind speed v1And a second wind speed v2The first preset power and the second preset power.
The application discloses blade control system includes: the monitoring module is used for monitoring the current real-time power and the current real-time wind speed of the wind turbine generator; the judging module is used for judging whether the wind turbine generator is in a stall state or not according to the current real-time power and the current real-time wind speed, and if so, the stall control module is triggered; the stall control module is used for controlling the wind turbine generator in a stall control mode, and the stall control mode comprises a preset minimum control angle and a preset control time period of the blade. According to the method and the device, the blade control system continuously monitors real-time power and real-time wind speed in the whole process, whether stall occurs is judged according to set standards, the mode is automatically switched when the stall occurs, measures are actively taken, power loss caused by the stall of the blade is avoided, the defect of manual responsibility in the prior art is overcome, and power output of the blade in the speed per hour state is effectively improved.
Correspondingly, the invention also discloses a blade control method, which is shown in fig. 2 and comprises the following steps:
s1: monitoring the current real-time power and the current real-time wind speed of the wind turbine generator;
s2: judging whether the wind turbine generator is in a stall state or not according to the current real-time power and the current real-time wind speed;
s3: if so, the wind turbine is controlled in a stall control mode, which includes a preset minimum control angle of the blades and a preset control period.
The preset minimum control angle and the preset control time period are generally set according to the geographical environment of the wind field and/or the type of the fan, wherein the geographical environment of the wind field specifically refers to the wind environment determined by the geographical position of the wind field, such as the wind receiving direction, the wind power size and the like of the wind field where the wind generating set is located.
It can be understood that, after judging whether the wind turbine generator is in the stall state according to the current real-time power and the current real-time wind speed, the method may further include:
s4: and if not, controlling the wind turbine generator in a non-stall control mode.
Specifically, the non-stall control mode is generally implemented by PSC.
Generally, after the step S3 of the preset control period is achieved, the wind turbine generator will enter the PSC mode again to try to operate in a non-stall state, the monitoring of the current implementation power and the current real-time wind speed and the judgment of the stall state are still required in the operation process, and once the wind turbine generator is in the stall state again, the wind turbine generator will enter the stall control mode of the step S3 again.
According to the method and the device, the blade control system continuously monitors real-time power and real-time wind speed in the whole process, whether stall occurs is judged according to set standards, the mode is automatically switched when the stall occurs, measures are actively taken, power loss caused by the stall of the blade is avoided, the defect of manual responsibility in the prior art is overcome, and power output of the blade in the speed per hour state is effectively improved.
The embodiment of the invention discloses a specific blade control method, and compared with the previous embodiment, the technical scheme is further explained and optimized in the embodiment.
Specifically, the process of judging whether the wind turbine generator is in a stall state or not according to the current real-time power and the current real-time wind speed includes:
judging whether the wind turbine generator is in a stall state or not according to the stall judgment condition;
the stall determination conditions specifically include:
the power is not limited when the wind turbine generator operates, and the time length that the current real-time power is smaller than the standard power corresponding to the current real-time wind speed exceeds the preset time length.
It can be understood that the wind turbine operating modes include limited power operation and unlimited power operation, and it is only necessary to determine whether the wind turbine stalls when the power is not limited. The standard power and the current real-time wind speed are positively correlated, a specific numerical relationship is usually represented by a piecewise linear function in fig. 3 or other manners, and the specific corresponding relationship needs to be determined according to actual conditions, which is not limited herein.
Referring to fig. 3, the corresponding relationship between the standard power and the current real-time wind speed is specifically as follows:
Figure BDA0002301014860000061
wherein P is standard power, v is current real-time wind speed, P1And P2Respectively corresponding to a first wind speed v1And a second wind speed v2The first preset power and the second preset power.
It can be seen that there are actually only two key points A (v) in FIG. 31,P1) And B (v)2,P2) The standard power on the left side of the point A is 0, the standard power between the points AB is linear interpolation, and the standard power on the right side of the point B is constant and is P2Thus, in this figure, if v ≦ v1Without comparing the current real-time power P and P2And the non-stall state of the wind turbine generator can be determined, and the PSC control is directly adopted.
Correspondingly, the invention also discloses a blade control device, which is shown in fig. 4 and comprises a processor 11 and a memory 12; wherein the processing 11 implements the following steps when executing the computer program stored in the memory 12:
monitoring the current real-time power and the current real-time wind speed of the wind turbine generator;
judging whether the wind turbine generator is in a stall state or not according to the current real-time power and the current real-time wind speed;
if so, the wind turbine is controlled in a stall control mode, which includes a preset minimum control angle of the blades and a preset control period.
According to the method and the device, the blade control system continuously monitors real-time power and real-time wind speed in the whole process, whether stall occurs is judged according to set standards, the mode is automatically switched when the stall occurs, measures are actively taken, power loss caused by the stall of the blade is avoided, the defect of manual responsibility in the prior art is overcome, and power output of the blade in the speed per hour state is effectively improved.
In some specific embodiments, when the processor 11 executes the computer subprogram stored in the memory 12, the following steps may be specifically implemented:
judging whether the wind turbine generator is in a stall state or not according to the stall judgment condition;
the stall determination conditions specifically include:
the power is not limited when the wind turbine generator operates, and the time length that the current real-time power is smaller than the standard power corresponding to the current real-time wind speed exceeds the preset time length.
In some specific embodiments, the correspondence between the standard power and the current real-time wind speed is specifically:
Figure BDA0002301014860000071
wherein P is standard power, v is current real-time wind speed, P1And P2Respectively corresponding to a first wind speed v1And a second wind speed v2The first preset power and the second preset power.
In some specific embodiments, the preset minimum control angle and the preset control period are set according to the geographical environment of the wind field and/or the type of the fan.
In some specific embodiments, when the processor 11 executes the computer subprogram stored in the memory 12, the following steps may be specifically implemented:
and if not, controlling the wind turbine generator in a non-stall control mode.
Further, the vane control device in the present embodiment may further include:
the input interface 13 is configured to obtain a computer program imported from the outside, store the obtained computer program in the memory 12, and further be configured to obtain various instructions and parameters transmitted by an external terminal device, and transmit the instructions and parameters to the processor 11, so that the processor 11 performs corresponding processing by using the instructions and parameters. In this embodiment, the input interface 13 may specifically include, but is not limited to, a USB interface, a serial interface, a voice input interface, a fingerprint input interface, a hard disk reading interface, and the like.
And an output interface 14, configured to output various data generated by the processor 11 to a terminal device connected thereto, so that other terminal devices connected to the output interface 14 can acquire various data generated by the processor 11. In this embodiment, the output interface 14 may specifically include, but is not limited to, a USB interface, a serial interface, and the like.
A communication unit 15 for establishing a telecommunication connection between the blade control device and an external server so that the blade control device can mount the image file to the external server. In this embodiment, the communication unit 15 may specifically include, but is not limited to, a remote communication unit based on a wireless communication technology or a wired communication technology.
And the keyboard 16 is used for acquiring various parameter data or instructions input by a user through real-time key cap knocking.
And the display 17 is used for displaying relevant information of the blade control process in real time so as to facilitate a user to know the current blade control situation in time.
The mouse 18 may be used to assist the user in entering data and to simplify the user's operation.
Further, embodiments of the present application also disclose a computer-readable storage medium, where the computer-readable storage medium includes Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable hard disk, CD-ROM, or any other form of storage medium known in the art. The computer-readable storage medium has stored thereon a computer program which, when executed by a processor, performs the steps of:
monitoring the current real-time power and the current real-time wind speed of the wind turbine generator;
judging whether the wind turbine generator is in a stall state or not according to the current real-time power and the current real-time wind speed;
if so, the wind turbine is controlled in a stall control mode, which includes a preset minimum control angle of the blades and a preset control period.
According to the method and the device, the blade control system continuously monitors real-time power and real-time wind speed in the whole process, whether stall occurs is judged according to set standards, the mode is automatically switched when the stall occurs, measures are actively taken, power loss caused by the stall of the blade is avoided, the defect of manual responsibility in the prior art is overcome, and power output of the blade in the speed per hour state is effectively improved.
In some specific embodiments, the computer subprogram stored in the computer readable storage medium, when executed by the processor, may specifically implement the following steps:
judging whether the wind turbine generator is in a stall state or not according to the stall judgment condition;
the stall determination conditions specifically include:
the power is not limited when the wind turbine generator operates, and the time length that the current real-time power is smaller than the standard power corresponding to the current real-time wind speed exceeds the preset time length.
In some specific embodiments, the correspondence between the standard power and the current real-time wind speed is specifically:
Figure BDA0002301014860000091
wherein P is standard power, v is current real-time wind speed, P1And P2Respectively corresponding to a first wind speed v1And a second wind speed v2The first preset power and the second preset power.
In some specific embodiments, the preset minimum control angle and the preset control period are set according to the geographical environment of the wind field and/or the type of the fan.
In some specific embodiments, the computer subprogram stored in the computer readable storage medium, when executed by the processor, may specifically implement the following steps:
and if not, controlling the wind turbine generator in a non-stall control mode.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The blade control system, method, device and readable storage medium provided by the present invention are described in detail above, and the principle and the implementation of the present invention are explained herein by applying specific examples, and the description of the above examples is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (10)

1. A vane control system, comprising:
the monitoring module is used for monitoring the current real-time power and the current real-time wind speed of the wind turbine generator;
the judging module is used for judging whether the wind turbine generator is in a stall state or not according to the current real-time power and the current real-time wind speed, and if so, the stall control module is triggered;
the stall control module is used for controlling the wind turbine generator in a stall control mode, and the stall control mode comprises a preset minimum control angle and a preset control time period of the blade.
2. The blade control system of claim 1, wherein the determination module is specifically configured to:
judging whether the wind turbine generator is in a stall state or not according to a stall judgment condition;
the stall determination condition specifically includes:
the power is not limited when the wind turbine generator operates, and the time length that the current real-time power is smaller than the standard power corresponding to the current real-time wind speed exceeds the preset time length.
3. The blade control system according to claim 2, wherein the correspondence between the standard power and the current real-time wind speed is specifically:
Figure FDA0002301014850000011
wherein P is the standard power, v is the current real-time wind speed, P1And P2Respectively corresponding to a first wind speed v1And a second wind speed v2The first preset power and the second preset power.
4. A blade control method, comprising:
monitoring the current real-time power and the current real-time wind speed of the wind turbine generator;
judging whether the wind turbine generator is in a stall state or not according to the current real-time power and the current real-time wind speed;
if so, controlling the wind turbine generator in a stall control mode, wherein the stall control mode comprises a preset minimum control angle and a preset control time period of the blade.
5. The blade control method according to claim 4, wherein the process of determining whether the wind turbine generator is in a stall state according to the current real-time power and the current real-time wind speed specifically comprises:
judging whether the wind turbine generator is in a stall state or not according to a stall judgment condition;
the stall determination condition specifically includes:
the power is not limited when the wind turbine generator operates, and the time length that the current real-time power is smaller than the standard power corresponding to the current real-time wind speed exceeds the preset time length.
6. The blade control method according to claim 5, wherein the correspondence between the standard power and the current real-time wind speed is specifically:
Figure FDA0002301014850000021
wherein P is the standard power, v is the current real-time wind speed, P1And P2Respectively corresponding to a first wind speed v1And a second wind speed v2The first preset power and the second preset power.
7. The blade control method according to any of claims 4 to 6, wherein the preset minimum control angle and the preset control period are set according to wind farm geographical environment and/or fan type.
8. The blade control method according to claim 7, wherein after determining whether the wind turbine generator is in a stall state according to the current real-time power and the current real-time wind speed, the method further comprises:
and if not, controlling the wind turbine generator in a non-stall control mode.
9. A vane control device, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the blade control method according to any one of claims 4 to 8 when executing the computer program.
10. A readable storage medium, characterized in that the readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the blade control method according to any one of claims 4 to 8.
CN201911221621.1A 2019-12-03 2019-12-03 Blade control system, method and device and readable storage medium Pending CN110863945A (en)

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