CN117365870A - Wind turbine generator blade stall monitoring and controlling method and system - Google Patents

Wind turbine generator blade stall monitoring and controlling method and system Download PDF

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Publication number
CN117365870A
CN117365870A CN202311533651.2A CN202311533651A CN117365870A CN 117365870 A CN117365870 A CN 117365870A CN 202311533651 A CN202311533651 A CN 202311533651A CN 117365870 A CN117365870 A CN 117365870A
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China
Prior art keywords
speed
generator
active power
current
curve
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Pending
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CN202311533651.2A
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Chinese (zh)
Inventor
王靛
常晟
刘红文
刘建勋
蒋韬
杨延钧
丁桂林
翟大勇
郭雁一夫
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CRRC Zhuzhou Institute Co Ltd
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CRRC Zhuzhou Institute Co Ltd
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Priority to CN202311533651.2A priority Critical patent/CN117365870A/en
Publication of CN117365870A publication Critical patent/CN117365870A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
    • 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
    • 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 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022—Adjusting aerodynamic properties of the blades
    • F03D7/0236—Adjusting aerodynamic properties of the blades by changing the active surface of the wind engaging parts, e.g. reefing or furling
    • 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 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/0256—Stall control
    • 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 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/0264—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor for stopping; controlling in emergency situations
    • F03D7/0268—Parking or storm protection
    • 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
    • F05B2270/325—Air temperature
    • 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
    • F05B2270/327—Rotor or generator 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

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Wind Motors (AREA)

Abstract

The invention discloses a method and a system for monitoring and controlling the stall of a wind turbine generator blade, wherein the method comprises the following steps: pre-configuring a reference wind speed-active power curve and a reference generator rotating speed-cabin acceleration curve under different air densities; acquiring operation data of a unit; obtaining the current air density according to the air temperature; obtaining a current wind speed-active power curve according to the wind speed and the generated power; obtaining a current generator speed-cabin acceleration curve according to the generator speed and the cabin acceleration; comparing the current wind speed-active power curve with a reference wind speed-active power curve under the current air density; simultaneously comparing the current generator speed-cabin acceleration curve with a reference generator speed-cabin acceleration curve under the current air density; and comprehensively judging whether the blades stall or not and the stall degree according to the comparison results. The invention can ensure the safe operation of the unit and simultaneously maximize the generated energy, and has low cost.

Description

Wind turbine generator blade stall monitoring and controlling method and system
Technical Field
The invention mainly relates to the technical field of wind power, in particular to a method and a system for monitoring and controlling the stall of a wind turbine generator blade.
Background
Along with the development and popularization of wind power technology, the realization of pneumatic performance of the whole machine by manufacturers of the whole machine is deeper and deeper in recent years. When the wind turbine generator runs under the condition of lower air density, the blade is easy to stall. When the whole machine operates in a stall state, the full-engine wind speed is caused to move backwards, and large power generation capacity is lost. And the load of the blades is increased due to stall flutter, so that the safety of the unit is affected. Therefore, how to accurately monitor, identify and control the stall phenomenon of the blade can ensure the generating capacity and ensure the safe operation of the unit.
At present, two main methods for monitoring and identifying the problem of blade stall exist:
1. based on the relation between lift coefficient and attack angle change, aerodynamic damping of phyllin and blade mode is calculated through aerodynamic force to identify the stall state of the blade. However, the relationship between the lift coefficient and the attack angle of the actual wind turbine generator in operation is large in theoretical difference, and the method is difficult to accurately identify the stall phenomenon of the blade.
2. Blade stall conditions are monitored by spectral analysis of the blade vibration signals, or by monitoring blade airflow separation using turbulence sensors or the like. However, the method is carried out by additionally adding a sensor, which is not beneficial to the cost reduction and efficiency improvement of the wind power whole machine.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems existing in the prior art, the invention provides the wind turbine generator blade stall monitoring and controlling method and system which are low in cost and capable of maximizing the generated energy while ensuring the safe operation of the wind turbine generator.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a wind turbine generator blade stall monitoring and controlling method comprises the following steps:
a wind speed-active power curve of the wind turbine generator under different air densities is pre-configured and used as a reference wind speed-active power curve; a generator speed-cabin acceleration curve of the wind turbine generator under different air densities is pre-configured and used as a reference generator speed-cabin acceleration curve;
acquiring operation data of a wind turbine generator, wherein the operation data comprise air temperature, wind speed, power generation power, generator rotating speed and cabin acceleration;
obtaining the current air density according to the air temperature; obtaining a current wind speed-active power curve of the wind turbine according to the wind speed and the power generation power; obtaining a current generator speed-cabin acceleration curve of the wind turbine according to the generator speed and the cabin acceleration;
comparing the current wind speed-active power curve with a reference wind speed-active power curve under the current air density to obtain a first comparison result; meanwhile, comparing the current generator rotating speed-engine room acceleration curve with a reference generator rotating speed-engine room acceleration curve under the current air density to obtain a second comparison result;
and judging whether the wind turbine generator system blades stall or not and the corresponding stall degree according to the first comparison result and the second comparison result.
Preferably, when the first comparison result is that the current wind speed-active power curve exceeds the stall control threshold of the reference wind speed-active power curve at the current air density but is lower than the corresponding stall protection value, and the second comparison result is that the current generator speed-nacelle acceleration curve exceeds the stall control threshold of the reference generator speed-nacelle acceleration curve at the current air density and is lower than the corresponding stall protection value, the blade is judged to be generally stalled.
Preferably, when the blade is judged to be generally stalled, the additional value of the pitch angle is calculated by combining the current pitch angle and the active power, and is overlapped on the unified pitch output value to perform the pitch-withdrawing action.
Preferably, when the first comparison result is that the current wind speed-active power curve exceeds the shutdown protection value of the reference wind speed-active power curve, or the second comparison result is that the current generator speed-cabin acceleration curve exceeds the shutdown protection value of the reference generator speed-cabin acceleration curve under the current air density, the blade is judged to be severely stalled.
Preferably, the shutdown action is performed when the blade is judged to be severely stalled.
Preferably, after the operation data of the wind turbine generator are obtained, data cleaning is performed on each operation data: and carrying out band-pass filtering on each obtained operation data, and then carrying out sliding filtering to obtain effective operation data.
Preferably, when a wind speed-active power curve of the wind turbine generator under different air densities and a generator rotation speed-cabin acceleration curve of the wind turbine generator under different air densities are preconfigured, the operation data in the SCADA monitoring system are used as the original data.
Preferably, a wind speed-active power curve cluster under different air densities is obtained from operation data in the SCADA monitoring system, a specific wind speed-active power curve is estimated according to the current air density, and the specific wind speed-active power curve is used as a reference wind speed-active power curve;
and obtaining a generator speed-cabin acceleration curve cluster under different air densities from the operation data in the SCADA monitoring system, estimating a specific generator speed-cabin acceleration curve according to the current air density, and taking the specific generator speed-cabin acceleration curve as a reference generator speed-cabin acceleration curve.
The invention also discloses a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, performs the steps of the method as described above.
The invention further discloses a wind turbine blade stall monitoring and control system, which comprises a memory and a processor which are connected with each other, wherein the memory is stored with a computer program which executes the steps of the method when being run by the processor.
Compared with the prior art, the invention has the advantages that:
according to the invention, the stall state of the blade is monitored in real time according to the real-time monitoring data of the operation of the wind turbine, so that the wind turbine can be timely adjusted according to the current operation state, the safe operation of the wind turbine is ensured, the generated energy is maximized, and the generating potential is fully excavated. The main control program is used for actively judging and executing corresponding scheduling and control actions, other hardware cost is not required to be increased, and the load reduction effect can be realized at lower cost.
Drawings
Fig. 1 is a flowchart of a control method according to an embodiment of the present invention.
Fig. 2 is a flowchart of a method for generating reference curves according to an embodiment of the present invention.
FIG. 3 is a logic determination flow chart in the present invention.
FIG. 4 is a graph showing wind speed versus active power curve in the present invention.
FIG. 5 is a graphical representation of generator speed versus nacelle acceleration for the present invention.
FIG. 6 is a graph illustrating the threshold values associated with the generator speed versus nacelle acceleration curve according to the present invention.
Detailed Description
The invention is further described below with reference to the drawings and specific examples.
As shown in FIG. 1, the method for monitoring and controlling the stall of the blade of the wind turbine generator according to the embodiment of the invention comprises the following steps:
a wind speed-active power curve of the wind turbine generator under different air densities is pre-configured and used as a reference wind speed-active power curve; a generator speed-cabin acceleration curve of the wind turbine generator under different air densities is pre-configured and used as a reference generator speed-cabin acceleration curve;
acquiring operation data of the wind turbine generator, performing data cleaning on the operation data, specifically performing band-pass filtering on each obtained data, and performing 100ms sliding filtering to obtain effective data of each variable; wherein the operation data comprises air temperature, wind speed, generation power, generator rotation speed and cabin acceleration;
obtaining the current air density according to the air temperature; obtaining a current wind speed-active power curve of the wind turbine according to the wind speed and the power generation power; obtaining a current generator speed-cabin acceleration curve of the wind turbine according to the generator speed and the cabin acceleration;
comparing the current wind speed-active power curve with a reference wind speed-active power curve under the current air density to obtain a first comparison result; meanwhile, comparing the current generator rotating speed-engine room acceleration curve with a reference generator rotating speed-engine room acceleration curve under the current air density to obtain a second comparison result;
and judging whether the wind turbine generator system blades stall or not and the corresponding stall degree according to the first comparison result and the second comparison result.
Specifically, when the first comparison result is that the current wind speed-active power curve exceeds the stall control threshold value of the reference wind speed-active power curve under the current air density but is lower than the corresponding shutdown protection value, and the second comparison result is that the current generator rotating speed-engine room acceleration curve exceeds the stall control threshold value of the reference generator rotating speed-engine room acceleration curve under the current air density and is lower than the corresponding shutdown protection value, judging that the blade is generally stalled, calculating the additional value of the pitch angle by combining the current pitch angle and the active power, and superposing the additional value on the unified pitch output value to perform the pitch-receiving action.
And when the first comparison result is that the current wind speed-active power curve exceeds the shutdown protection value of the reference wind speed-active power curve, or the second comparison result is that the current generator rotating speed-engine room acceleration curve exceeds the shutdown protection value of the reference generator rotating speed-engine room acceleration curve under the current air density, judging that the blade is severely stalled, and executing the shutdown action at the moment.
The general stall judgment condition is that the first comparison result and the second comparison result reach the stall control threshold value at the same time, but are lower than the shutdown protection value, and then control action is carried out; and if the serious stall is caused, one of the two is stopped when the stopping protection value is reached.
The main control program is used for actively judging and executing corresponding scheduling and control actions, other hardware cost is not required to be increased, and the load reduction effect can be realized at lower cost.
According to the invention, the stall state of the blade is monitored in real time according to the real-time monitoring data of the operation of the wind turbine, so that the wind turbine can be timely adjusted according to the current operation state, the safe operation of the wind turbine is ensured, the generated energy is maximized, and the generating potential is fully excavated.
The embodiment of the invention also provides a stall monitoring and controlling device of the wind turbine, which particularly comprises a big data real-time monitoring module, a data processing module, a logic judging module, a control module and a protection module;
the big data real-time monitoring module is used for acquiring the running data of the wind turbine generator from the SCADA monitoring system and ensuring the accuracy of the data;
the data processing module is used for receiving SCADA data input, and then calculating an average value by using 100ms sliding filtering, so that the data mutation is prevented from bringing great influence on a control system;
in addition, the data processing module also needs to calculate a wind speed-active power curve database and a generator rotating speed-cabin acceleration database, and the data processing module specifically comprises the following steps:
1. calculating historical air density by using the air temperature data after data cleaning;
2. establishing a wind speed-active power curve database according to different historical air densities and data such as wind speed, active power and the like to generate wind speed-active power curves under different air densities, wherein the wind speed-active power curves are used as reference curves for logic judgment, and specific wind speed-active power curves are shown in a graph shown in fig. 4; specifically, a wind speed-active power curve cluster under different air densities can be obtained from the past operation big data, a specific wind speed-active power curve is estimated according to the current air density, and the specific wind speed-active power curve is used as a reference wind speed-active power curve;
3. a generator speed-cabin acceleration database is established according to different historical air densities and data such as generator speed, cabin acceleration and the like so as to generate generator speed-cabin acceleration envelope curves under different air densities, wherein the generator speed-cabin acceleration envelope curves serve as acceleration datum lines for logic judgment, and a specific generator speed-cabin acceleration curve is shown in fig. 5; specifically, a generator speed-cabin acceleration curve cluster under different air densities can be obtained from the big data of the past unit operation, a specific generator speed-cabin acceleration envelope curve is estimated according to the current air density, and the specific generator speed-cabin acceleration envelope curve is used as a reference generator speed-cabin acceleration envelope curve;
the logic judgment module is used for comparing the current unit operation data with the reference curves, and specifically comprises the following steps: comparing the current unit wind speed-active power curve with a reference wind speed-active power curve under the current air density to obtain a first comparison result; wherein the reference wind speed-active power curve corresponds to a stall control threshold and a stall protection threshold;
meanwhile, comparing the current unit operation generator rotating speed-engine room acceleration curve with a reference generator rotating speed-engine room acceleration curve under the current density to obtain a second comparison result; the reference generator rotating speed-engine room acceleration curve corresponds to a stall control threshold value and a shutdown protection threshold value; as shown in fig. 6, the corresponding red line is a reference generator speed-nacelle acceleration curve; blue line is stall control threshold; black lines are shutdown protection thresholds;
when the first comparison result is that the current wind speed-active power curve exceeds the stall control threshold value of the reference wind speed-active power curve under the current air density but is lower than the corresponding shutdown protection value, and the second comparison result is that the current generator rotating speed-engine room acceleration curve exceeds the stall control threshold value of the reference generator rotating speed-engine room acceleration curve under the current air density and is lower than the corresponding shutdown protection value, judging that the blade is in general stall, at the moment, the control module calculates the additional value of the pitch angle by combining the current pitch angle and the active power, and the additional value is superimposed on the unified pitch output value to perform the pitch-collecting action.
When the first comparison result is that the current wind speed-active power curve exceeds the shutdown protection value of the reference wind speed-active power curve, and the second comparison result is that the current generator rotating speed-engine room acceleration curve exceeds the shutdown protection value of the reference generator rotating speed-engine room acceleration curve under the current air density, the blade is judged to be severely stalled, and at the moment, the protection module executes shutdown action.
In order to avoid control malfunction, the stall control threshold is set to return to the poor state, and the control reliability is high and malfunction is small.
The invention also discloses a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, performs the steps of the method as described above. The invention further discloses a wind turbine blade stall monitoring and control system, which comprises a memory and a processor which are connected with each other, wherein the memory is stored with a computer program which executes the steps of the method when being run by the processor. The media and system of the present invention correspond to the methods described above, as well as having the advantages described above.
The present invention may also be implemented in whole or in part by hardware associated with computer program instructions, which may be stored in a computer-readable storage medium, the computer program, when executed by a processor, implementing the steps of the method embodiments described above. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, executable files or in some intermediate form, etc. The computer-readable storage medium includes: any entity or device capable of carrying computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. The memory is used for storing computer programs and/or modules, and the processor implements various functions by running or executing the computer programs and/or modules stored in the memory and invoking data stored in the memory. The memory may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, memory, plug-in hard disk, smart Media Card (SMC), secure Digital (SD) Card, flash Card (Flash Card), at least one disk storage device, flash memory device, or other volatile solid state storage device, etc.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the invention without departing from the principles thereof are intended to be within the scope of the invention as set forth in the following claims.

Claims (10)

1. The method for monitoring and controlling the stall of the blades of the wind turbine generator is characterized by comprising the following steps:
a wind speed-active power curve of the wind turbine generator under different air densities is pre-configured and used as a reference wind speed-active power curve; a generator speed-cabin acceleration curve of the wind turbine generator under different air densities is pre-configured and used as a reference generator speed-cabin acceleration curve;
acquiring operation data of a wind turbine generator, wherein the operation data comprise air temperature, wind speed, power generation power, generator rotating speed and cabin acceleration;
obtaining the current air density according to the air temperature; obtaining a current wind speed-active power curve of the wind turbine according to the wind speed and the power generation power; obtaining a current generator speed-cabin acceleration curve of the wind turbine according to the generator speed and the cabin acceleration;
comparing the current wind speed-active power curve with a reference wind speed-active power curve under the current air density to obtain a first comparison result; meanwhile, comparing the current generator rotating speed-engine room acceleration curve with a reference generator rotating speed-engine room acceleration curve under the current air density to obtain a second comparison result;
and judging whether the wind turbine generator system blades stall or not and the corresponding stall degree according to the first comparison result and the second comparison result.
2. The method according to claim 1, wherein when the first comparison result is that the current wind speed-active power curve exceeds the stall control threshold of the reference wind speed-active power curve at the current air density but is lower than the corresponding stall protection value, and the second comparison result is that the current generator speed-nacelle acceleration curve exceeds the stall control threshold of the reference generator speed-nacelle acceleration curve at the current air density and is lower than the corresponding stall protection value, the blade is judged to be in general stall.
3. The method for monitoring and controlling the stall of the blades of the wind turbine generator according to claim 2, wherein when the blades are judged to be generally stalled, the additional value of the pitch angle is calculated by combining the current pitch angle and the active power, and is overlapped on the unified pitch output value, and the pitch-withdrawing action is performed.
4. The method according to claim 2, wherein when the first comparison result is that the current wind speed-active power curve exceeds the shutdown protection value of the reference wind speed-active power curve, or the second comparison result is that the current generator speed-nacelle acceleration curve exceeds the shutdown protection value of the reference generator speed-nacelle acceleration curve at the current air density, the blade is judged to be severely stalled.
5. The method of claim 4, wherein the act of shutting down is performed when the blade is determined to be severely stalled.
6. The method for monitoring and controlling the stall of blades of a wind turbine according to any one of claims 1 to 5, wherein after obtaining the operation data of the wind turbine, data cleaning is performed on each operation data: and carrying out band-pass filtering on each obtained operation data, and then carrying out sliding filtering to obtain effective operation data.
7. The method for monitoring and controlling the stall of blades of a wind turbine according to any one of claims 1 to 5, wherein when a wind speed-active power curve of the wind turbine at different air densities is preconfigured and a generator speed-nacelle acceleration curve of the wind turbine at different air densities is preconfigured, the operation data in the SCADA monitoring system is used as the original data.
8. The method for monitoring and controlling blade stall of wind turbine generator according to claim 7,
obtaining wind speed-active power curve clusters under different air densities from operation data in the SCADA monitoring system, estimating a specific wind speed-active power curve according to the current air density, and taking the specific wind speed-active power curve as a reference wind speed-active power curve;
and obtaining a generator speed-cabin acceleration curve cluster under different air densities from the operation data in the SCADA monitoring system, estimating a specific generator speed-cabin acceleration curve according to the current air density, and taking the specific generator speed-cabin acceleration curve as a reference generator speed-cabin acceleration curve.
9. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, performs the steps of the method according to any of claims 1-8.
10. A wind turbine blade stall monitoring and control system comprising a memory and a processor connected to each other, said memory having stored thereon a computer program which, when run by the processor, performs the steps of the method according to any of claims 1-8.
CN202311533651.2A 2023-11-16 2023-11-16 Wind turbine generator blade stall monitoring and controlling method and system Pending CN117365870A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311533651.2A CN117365870A (en) 2023-11-16 2023-11-16 Wind turbine generator blade stall monitoring and controlling method and system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311533651.2A CN117365870A (en) 2023-11-16 2023-11-16 Wind turbine generator blade stall monitoring and controlling method and system

Publications (1)

Publication Number Publication Date
CN117365870A true CN117365870A (en) 2024-01-09

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Application Number Title Priority Date Filing Date
CN202311533651.2A Pending CN117365870A (en) 2023-11-16 2023-11-16 Wind turbine generator blade stall monitoring and controlling method and system

Country Status (1)

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CN (1) CN117365870A (en)

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