CN114198267A - Operation control method and system for wind generating set used for extreme gust - Google Patents
Operation control method and system for wind generating set used for extreme gust Download PDFInfo
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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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
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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
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
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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
- 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
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- 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 provides an operation control method and system for a wind generating set for extreme gust, and the method comprises the following steps: calculating the sliding average of a first time constant and a second time constant of the detected wind speed, and judging whether to set a first wind speed flag bit to be positive or not according to the first and second wind speed average values; performing sliding average calculation of a third time constant on the detected wind direction, and judging whether the wind direction flag bit is set to be positive or not according to the wind direction mean value; according to the calculated power speed of the generator, judging whether the power speed flag bit is set to be positive or not; performing sliding average calculation of a fourth time constant on the wind speed, and judging whether the second wind speed flag bit is set to be positive or not according to the third wind speed average value; if each flag bit is set to be positive, wind load shedding control is carried out once within preset time, and a control strategy is maintained. The method comprehensively judges whether the unit faces extreme gust or not by combining factors such as wind direction deviation, reduces misjudgment, and timely and efficiently reduces the limit load of the unit.
Description
Technical Field
The application relates to the technical field of wind power generation, in particular to an operation control method and system for a wind generating set for extreme gust.
Background
With the development of wind power generation technology, it is common to use wind turbines to generate wind power, and people pay more and more attention to how to ensure the safety of the wind turbines. Wind power is specified in the design of a wind generating set of international electrical standard IEC61400-13, and when the generating set bears gusts of extremely large wind (EDC) with changed direction and extremely continuous gusts (ECD) with changed direction, the wind speed and the wind direction are both changed violently, and under the condition, key components such as a yaw bearing of the generating set bear large bending moment and possibly experience limit load. Therefore, it is necessary to adjust the unit operation control strategy, so that the unit load is reduced as much as possible under extreme wind conditions, such as severe wind direction and wind speed changes.
In the related technology, the rotating speed of a generator of a wind generating set or the wind speed and the wind direction detected by an anemometer are monitored, and when the rotating speed of the set is judged to continuously rise and the wind speed of the anemometer continuously rises, the operation mode of the set is adjusted at the moment, so that a part of wind load of the set is removed when the set faces the extreme gust, and the limit load of the set faces the extreme wind condition is further reduced.
However, the applicant finds that in some extreme gust situations, the wind direction also changes continuously, the equivalent wind speed of the impeller is not always increased continuously due to the effect of the wind direction, so that the rotating speed of the generator and the like do not continuously rise, the current front opposite end wind condition of the unit cannot be accurately and timely judged through the judging method, the adjusting operation control strategy of the unit is not triggered, large bending moment is experienced by most components of the unit, and the limit load experienced by key components of the unit is increased in the past.
Disclosure of Invention
The present application is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the first objective of the present application is to provide an operation control method for a wind generating set with extreme gust, which is used for judging a wind direction deviation, so as to solve the influence of the extreme load caused by a rapid wind direction change, and comprehensively judging a plurality of factors such as a power change, a wind speed change and a wind direction deviation, so as to accurately judge whether the set faces the extreme gust, reduce the probability of misjudgment, and facilitate timely and efficient change of a control strategy of the set and reduction of the extreme load under the condition that the set faces the extreme gust.
A second object of the present application is to propose an operation control system for a wind power plant for extreme gusts;
a third object of the present application is to propose a non-transitory computer-readable storage medium.
To achieve the above object, a first aspect of the present application is directed to an operation control method of a wind turbine generator system for extreme gusts, the method including the steps of:
acquiring wind speed detected by an anemoscope of a wind generating set, respectively performing sliding average calculation of a first time constant and sliding average calculation of a second time constant on the wind speed to acquire a first wind speed average value and a second wind speed average value, and judging whether a first wind speed flag bit is set to be positive or not according to the first wind speed average value and the second wind speed average value, wherein the first time constant is greater than the second time constant;
acquiring the wind direction detected by a wind direction indicator of the wind generating set, performing sliding average calculation of a third time constant on the wind direction to acquire a wind direction mean value, and judging whether a wind direction flag bit is set to be positive or not according to the wind direction mean value;
detecting the power of a generator of the wind generating set at the current moment, calculating the power speed of the generator according to the power of the current moment, and judging whether a power speed flag bit is set to be positive or not according to the power speed;
performing sliding average calculation of a fourth time constant on the wind speed to obtain a third wind speed average value, and judging whether a second wind speed flag bit is set to be positive according to the third wind speed average value, wherein the fourth time constant is greater than the second time constant and less than the first time constant;
and if the first wind speed zone bit, the wind direction zone bit, the power speed zone bit and the second wind speed zone bit are all set to be positive, carrying out wind load shedding control once within preset time and maintaining a control strategy after the wind load shedding control.
Optionally, in an embodiment of the present application, determining whether to set the first wind speed flag bit to be positive according to the first wind speed average value and the second wind speed average value includes: acquiring a preset first wind speed threshold; calculating a difference value of the first wind speed average value and the second wind speed average value, and comparing the difference value with the first wind speed threshold value; if the difference value is smaller than or equal to the first wind speed threshold value, maintaining the running state of the wind generating set; and if the difference is larger than the first wind speed threshold value, setting the first wind speed flag bit to be positive.
Optionally, in an embodiment of the application, determining whether to set the wind direction flag bit to be positive according to the wind direction mean includes acquiring a preset wind direction threshold; calculating a difference value between the wind direction mean value and the machine head direction of the wind generating set, and comparing the difference value with the wind direction threshold value; if the difference value is smaller than or equal to the wind direction threshold value, maintaining the running state of the wind generating set; and if the difference value is larger than the wind direction threshold value, setting the wind direction flag bit to be positive.
Optionally, in an embodiment of the present application, calculating a power speed of the generator according to the power at the current time, and determining whether to set a power speed flag to be positive according to the power speed includes detecting a power of a generator of the wind turbine generator system at a previous time adjacent to the current time, and subtracting the power at the current time from the power at the previous time to obtain a power difference; dividing the power difference by a control period to obtain a power speed of the generator, and comparing the power speed with a preset power speed threshold; if the power speed is less than or equal to the power speed threshold value, maintaining the running state of the wind generating set; and if the power speed is greater than the power speed threshold, setting the power speed flag bit to be positive.
Optionally, in an embodiment of the present application, determining whether to set a second wind speed flag bit to be positive according to the third wind speed average includes acquiring a preset second wind speed threshold, where the second wind speed threshold is greater than the first wind speed threshold; comparing the third mean wind speed value with the second wind speed threshold value; if the third wind speed average value is less than or equal to the second wind speed threshold value, maintaining the running state of the wind generating set; and if the third wind speed average value is larger than the second wind speed threshold value, setting the second wind speed flag bit to be positive.
Optionally, in an embodiment of the present application, the wind load shedding control includes: and sending a nonlinear pitch instruction for increasing the pitch rate to a pitch actuating mechanism and/or sending a power limiting instruction for reducing the operation power to the engine.
To achieve the above object, a second aspect of the present application provides an operation control system for a wind turbine generator system with extreme wind gusts, including the following modules:
the wind speed detection device comprises a first calculation module, a second calculation module and a control module, wherein the first calculation module is used for acquiring the wind speed detected by an anemoscope of a wind generating set, respectively performing the sliding average calculation of a first time constant and the sliding average calculation of a second time constant on the wind speed to acquire a first wind speed average value and a second wind speed average value, and judging whether a first wind speed flag bit is set to be positive or not according to the first wind speed average value and the second wind speed average value, wherein the first time constant is greater than the second time constant;
the second calculation module is used for acquiring the wind direction detected by a wind direction indicator of the wind generating set, performing sliding average calculation on the wind direction by using a third time constant to acquire a wind direction mean value, and judging whether the wind direction flag bit is set to be positive or not according to the wind direction mean value;
the third calculation module is used for detecting the power of a generator of the wind generating set at the current moment, calculating the power speed of the generator according to the power at the current moment, and judging whether the power speed flag bit is set to be positive or not according to the power speed;
the fourth calculation module is used for performing sliding average calculation on a fourth time constant on the wind speed to obtain a third wind speed average value, and judging whether a second wind speed flag bit is set to be positive or not according to the third wind speed average value, wherein the fourth time constant is greater than the second time constant and less than the first time constant;
and the control module is used for carrying out primary wind load shedding control within preset time and maintaining a control strategy after the wind load shedding control if the first wind speed zone bit, the wind direction zone bit, the power speed zone bit and the second wind speed zone bit are all set to be positive.
Optionally, in an embodiment of the present application, the first calculating module is specifically configured to: acquiring a preset first wind speed threshold; calculating a difference value of the first wind speed average value and the second wind speed average value, and comparing the difference value with the first wind speed threshold value; if the difference value is smaller than or equal to the first wind speed threshold value, maintaining the running state of the wind generating set; and if the difference is larger than the first wind speed threshold value, setting the first wind speed flag bit to be positive.
Optionally, in an embodiment of the present application, the second calculating module is specifically configured to: acquiring a preset wind direction threshold;
calculating a difference value between the wind direction mean value and the machine head direction of the wind generating set, and comparing the difference value with the wind direction threshold value; if the difference value is smaller than or equal to the wind direction threshold value, maintaining the running state of the wind generating set; and if the difference value is larger than the wind direction threshold value, setting the wind direction flag bit to be positive.
The technical scheme provided by the embodiment of the application at least has the following beneficial effects: according to the method and the device, the wind direction deviation is judged, the limit load influence caused by rapid change of the wind direction is solved, and meanwhile, comprehensive judgment is carried out on various factors such as comprehensive power change, wind speed change and wind direction deviation. The collected wind speed and wind direction signal lamps are subjected to sliding average processing, the influence of unnecessary measurement interference signals on the control effect is avoided, parameters such as measured wind speed and wind direction exceed a threshold value to serve as conditions for executing load reduction control, the situation that the unit operation strategy is changed due to the fact that the wind speed is low and impact on the bending moment of the unit is not caused is avoided, the generated energy of the unit is guaranteed, whether the unit faces to extreme gust or not can be accurately judged, the probability of misjudgment is reduced, the control strategy for timely and efficiently changing the unit under the situation that the unit faces to the extreme gust is facilitated, and the limit load borne by the unit is reduced. And in addition, the mode that secondary triggering is not performed for a period of time after the wind load shedding control is triggered is adopted, so that the limit load caused by the extreme wind direction change of the wind generating set is reduced, frequent fluctuation of the state of the wind generating set caused by frequent triggering is avoided, and the stable operation of the wind generating set is favorably maintained.
In order to achieve the above embodiments, the third aspect of the present application further provides a non-transitory computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the operation control method for the wind generating set for the extreme gust in the above embodiments.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of an operation control method of a wind turbine generator set for extreme gust according to an embodiment of the present application;
fig. 2 is a schematic flow chart of a specific operation control method for a wind generating set for extreme gust according to an embodiment of the present application;
fig. 3 is a schematic flow chart of another specific operation control method for a wind generating set for extreme gust according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an operation control system of a wind generating set for an extreme gust according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following describes an operation control method and system of a wind generating set for extreme gust according to embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a flowchart of an operation control method for a wind turbine generator system for extreme gusts according to an embodiment of the present application, and as shown in fig. 1, the method includes the following steps:
step 101, acquiring a wind speed detected by an anemometer of a wind generating set, respectively performing sliding average calculation of a first time constant and sliding average calculation of a second time constant on the wind speed to acquire a first wind speed average value and a second wind speed average value, and judging whether to set a first wind speed flag bit to be positive according to the first wind speed average value and the second wind speed average value, wherein the first time constant is greater than the second time constant.
The anemoscope is a device for measuring the air flow rate of the wind generating set in the current environment. The wind speed monitoring system can be used for arranging one or more anemometers at different positions of the wind generating set in advance, such as a cabin and the like, so as to monitor the current wind speed borne by the set. In the embodiment of the application, in order to improve the accuracy of the collected wind speed, the measured wind speed finally output by each anemometer can be detected by calculating the average value of the wind speed data collected by each anemometer or setting a weight for each anemometer according to historical experience.
Specifically, when monitoring Data such as wind speed is acquired, as a possible implementation manner, Data of each device in the wind turbine generator system may be acquired through a Data Acquisition And monitoring Control system (SCADA for short). The SCADA can monitor and control various information devices in the wind generating set on the operation site, such as an anemoscope, a anemoscope and the like, and various functions such as data acquisition and device control are achieved. As an example, the SCADA in the present application may be configured as a client/server architecture, where a server is connected to each preset monitoring device to obtain the collected data of the monitoring device. The client is used for man-machine interaction, and can display the load currently born by the wind generating set, the currently executed control strategy and the like on a man-machine interaction interface.
The moving average calculation refers to that new and old data are increased and decreased periodically according to a time sequence on the basis of a simple average method to calculate a moving average. The first time constant and the second time constant may be the size of a sliding window in the moving average calculation.
It should be noted that, in actual operation, due to the influence of factors such as errors of the measuring device and rotation of the wind wheel, the acquired wind speed data may have deviation, and the calculation is not directly performed by the wind speed acquired by the anemometer, so that the application performs the moving average processing on the acquired wind speed data, the influence of unnecessary measurement interference signals such as environmental factors can be avoided, and the accuracy of controlling the unit is improved. In addition, in the application, the first time constant is set to be larger than the second time constant, namely the first time constant is a long time constant, and the second time constant is a short time constant, so that the condition of rapid change of the wind speed can be analyzed by carrying out long-time and short-time moving average calculation on the collected wind speed data, and the condition can be used as one of conditions for judging the extreme gust.
In a specific implementation, in an embodiment of the present application, determining whether to set the first wind speed flag bit to be positive according to the first wind speed average value and the second wind speed average value includes obtaining a preset first wind speed threshold, calculating a difference between the first wind speed average value and the second wind speed average value, comparing the difference between the first wind speed average value and the second wind speed average value with the first wind speed threshold, if the difference is less than or equal to the first wind speed threshold, maintaining the operating state of the wind turbine generator system, and if the difference is greater than the first wind speed threshold, setting the first wind speed flag bit to be positive.
The first wind speed threshold may be set in a corresponding manner according to an actual condition, for example, a lowest threshold that may indicate a rapid change in wind speed is set as the first wind speed threshold according to expert knowledge or historical experience, and a specific setting manner and a set numerical value are not limited herein.
Therefore, the embodiment of the application can avoid the loss of the generating capacity of the unit caused by changing the unit operation strategy under the condition that the wind speed is low and the impact is not caused to the bending moment of the unit by judging whether the wind speed difference exceeds the wind speed threshold or not and taking the currently measured wind speed exceeding the threshold as the condition for executing the wind load shedding control, and ensures the generating capacity and the normal operation of the unit.
For example, after acquiring the wind speed measured by the anemometer, the wind speed is subjected to a long time constant of 15 seconds and is recorded as WindSpeedLave. At the same time, the anemometer measured wind speed was averaged for a short time constant of 0.5 seconds and recorded as WindSpeedSave. Comparing the difference between the WindSpeedSave and the WindSpeedLave with a preset wind speed threshold windspeedspeedthreshold (the wind speed threshold can be set to 4-6m/s), if the threshold is not exceeded, the unit running state does not change and is marked as windspeedfail 0, and if the threshold is exceeded, the unit running state is marked as WindSpeedTrue 1 (namely, the first wind speed flag WindSpeedTrue is set to positive).
And 102, acquiring the wind direction detected by a wind direction indicator of the wind generating set, performing sliding average calculation of a third time constant on the wind direction to acquire a wind direction mean value, and judging whether the wind direction flag bit is set to be positive or not according to the wind direction mean value.
The anemoscope is a device for measuring the air flow direction, and the description of acquiring the wind direction data in step 101 may be referred to in the embodiment of acquiring the wind speed data, which is not described herein again.
The third time constant may be a short time constant, for example, the third time constant may be smaller than the second time constant. And taking the third time constant as the size of a sliding window in the calculation of the sliding average of the wind direction data.
It should be noted that, in actual operation, due to the influence of factors such as errors of the measuring device and rotation of the wind wheel, the collected wind direction data may have deviation, and it is not suitable to calculate directly with the wind direction collected by the anemoscope, so that the application performs moving average processing on the collected wind direction data, and can avoid the influence of unnecessary measurement interference signals such as environmental factors, and improve the accuracy of controlling the unit.
In specific implementation, in an embodiment of the application, after the wind direction mean value is calculated through the sliding average, whether the wind direction flag bit is set to be positive is judged according to the wind direction mean value, the method includes obtaining a preset wind direction threshold value, calculating a difference value between the wind direction mean value and the machine head direction of the wind generating set, comparing the difference value between the wind direction mean value and the machine head direction of the wind generating set with the wind direction threshold value, if the difference value is smaller than or equal to the wind direction threshold value, maintaining the running state of the wind generating set, and if the difference value is larger than the wind direction threshold value, setting the wind direction flag bit to be positive. The wind direction threshold value represents a wind direction deviation degree, and when the wind direction is greater than the wind direction threshold value, it represents that the current wind direction changes greatly, and the specific setting mode may refer to the setting mode of the wind speed threshold value, which is not described herein again.
From this, this application still combines wind direction deviation to judge whether the unit is currently under the environment of extreme gust, avoids when the wind speed that leads to detecting because the effect of wind direction does not continuously increase, can't in time carry out the control strategy that reduces the unit load under the environment of extreme gust, has guaranteed the security of unit.
For example, after the wind direction measured by a wind direction indicator is obtained, the wind direction data is subjected to short-time constant 0.2 second sliding average and subtracted from the head direction of the wind turbine generator to be recorded as winddirectionerror save. And comparing the subtracted difference value with a preset wind direction threshold value winddirectionerror threshold (the wind direction threshold value can be set to be 30-40 degrees), and if the wind direction threshold value is not exceeded, the running state of the unit is not changed and marked as winddirectionerror false being 0. If the threshold value is exceeded, the flag is winddirectortrue ═ 1.
The machine head direction of the wind turbine generator can be measured and determined in advance, and the machine head direction data are stored in a database of the wind turbine generator, and are read from the wind turbine generator when comparison is carried out. The wind direction data can be acquired through real-time measurement of measuring equipment, so that the real-time performance of the data is improved.
And 103, detecting the power of the generator of the wind generating set at the current moment, calculating the power speed of the generator according to the power at the current moment, and judging whether the power speed flag bit is set to be positive or not according to the power speed.
In the embodiment of the application, the power of the generator can be calculated according to the rotating speed and the torque of the generator, that is, the collected rotating speed and the collected torque of the generator at the current moment are multiplied to obtain the power of the generator at the current moment. And then the power speed of the generator is calculated according to the power of the generator at different moments, so that whether a control strategy for adjusting the load is executed or not is judged by combining the power speed of the generator subsequently.
As a possible implementation manner, calculating the power speed of the generator according to the power at the current moment, and determining whether to set the power speed flag bit to be positive according to the power speed, including detecting the power of the generator of the wind turbine generator set at the previous moment adjacent to the current moment, subtracting the power at the current moment from the power at the previous moment to obtain a power difference, dividing the power difference by a control period to obtain the power speed of the generator, comparing the power speed with a preset power speed threshold, if the power speed is less than or equal to the power speed threshold, maintaining the operating state of the wind turbine generator set, and if the power speed is greater than the power speed threshold, setting the power speed flag bit to be positive.
In this example, the control period refers to a period for performing calculation and control by a control device of the plant, for example, a main programmable logic controller (master PLC) of the plant, and the control period may be determined according to performance of the control device of the plant. The power speed reflecting the power change condition of the generator can be obtained by dividing the power difference by the control period, and the power speed is compared with the power speed threshold value to judge whether the power change of the motor is overlarge.
Therefore, the method and the device calculate the change rate of the power of the generator, so that the important working state of the main components of the unit, namely the power rapid change condition of the generator can be reflected, the power rapid change condition is used as one of conditions for judging whether the unit is bearing extreme gust, and the judgment accuracy can be improved. And the mode of judging whether the power speed of the generator exceeds the threshold value is used as a condition for executing the wind load shedding control, so that the condition of misjudgment caused by triggering of the small wind can be avoided.
For example, the generator speed and the torque command are detected in the current detection period, and the generator speed and the torque command are multiplied to obtain the Power _ now of the generator at the current moment. And detecting the rotating speed and the torque command of the generator in the previous detection period, and multiplying the rotating speed and the torque command by each other to obtain the Power Power _ last of the generator at the previous moment. And subtracting the Power of the generator at the previous moment and the next moment to obtain a Power difference Power _ diff, and dividing the Power difference by a control cycle to obtain a Power speed Power _ vel of the generator. Comparing the Power speed Power _ vel of the generator with a preset Power speed Threshold value Power _ Threshold (the range of the Power speed Threshold value can be set to 200 and 400kw/s), if the Threshold value is not exceeded, the unit operation state does not change and is marked as PowerVelFalse being 0. If the threshold value is exceeded, the label is PowerVelTrue 1.
And 104, performing sliding average calculation on a fourth time constant on the wind speed to obtain a third wind speed average value, and judging whether the second wind speed flag bit is set to be positive or not according to the third wind speed average value, wherein the fourth time constant is greater than the second time constant and less than the first time constant.
The fourth time constant is a longer time constant, that is, the fourth time constant is greater than the second time constant in step 101 and smaller than the first time constant.
In the embodiment of the present application, determining whether to set the second wind speed flag bit to be positive according to the third wind speed average value includes obtaining a preset second wind speed threshold value, where the second wind speed threshold value is greater than the first wind speed threshold value, then comparing the third wind speed average value with the second wind speed threshold value, if the third wind speed average value is less than or equal to the second wind speed threshold value, maintaining the operating state of the wind turbine generator system, and if the third wind speed average value is greater than the second wind speed threshold value, setting the second wind speed flag bit to be positive. The manner of setting the second wind speed threshold value may refer to the description of setting the first wind speed threshold value in the above embodiments.
For example, the wind speed measured by the anemometer is averaged over a long time constant of 10 seconds and recorded as WindSpeedave. WindSpeedave is compared with a preset wind speed threshold windspeedspeedavethreshold (the second wind speed threshold may be selected from 7-10 m/s), if the threshold is not exceeded, the unit operating state does not change and is marked as WindSpeedaveFalse ═ 0. If the threshold value is exceeded, the mark is windspeedvetrettrue 1.
And 105, if the first wind speed zone bit, the wind direction zone bit, the power speed zone bit and the second wind speed zone bit are all set to be positive, carrying out wind load shedding control once in a preset time and maintaining a control strategy after the wind load shedding control is carried out.
The control strategy for carrying out primary wind load shedding control and maintaining the control strategy after the wind load shedding control in the preset time means that only primary wind load shedding control is carried out in the preset time, and after the primary control strategy is adjusted, the control strategy is maintained and secondary wind load shedding control is not triggered. In specific implementation, the counting can be started after the wind load shedding control is performed once, the counting value is accumulated once every control period, and the receiving of the wind load shedding control instruction is stopped within the range from the current time to the preset time.
In the embodiment of the application, only when the first wind speed flag bit, the wind direction flag bit, the power speed flag bit and the second wind speed flag bit are determined to be set to be positive through the above method, the wind load shedding control is executed, and further, the limit load of the unit under the condition of facing extreme wind is reduced. When any flag bit is 0, the running state of the unit is maintained unchanged, so that the misjudgment probability triggered by the small wind is reduced.
Specifically, when the wind load shedding control is performed, as a possible implementation manner, a nonlinear pitch command for increasing the pitch rate may be sent to the pitch actuator and/or a power limit command for reducing the operating power may be sent to the engine, that is, the two commands may be executed simultaneously, or one of the two commands may be selected to reduce the load. Wherein the non-linear pitch command and the power limit command respectively comprise a value for increasing the pitch rate, such as 2 degrees per second, and a value for decreasing the power rate, such as-300 kw per second. It will be appreciated that, in practical applications, the range of operating parameters of the plant is limited, and therefore, the non-linear pitch command and the power limit command may further include parameter adjustment thresholds, such as limiting the power to stop when the power is reduced to one kilowatt-hour. Therefore, partial wind load is unloaded in a nonlinear pitch changing mode or a power limiting operation mode.
Of course, the limit load of the unit can be reduced in other manners, for example, the wind load can be removed by reducing the rotating speed of the generator, and the manner of specifically performing wind load removal control can be set according to actual needs, and is not limited here.
For example, when the flag bits WindSpeedTrue, winddirectortrue, PowerVelTrue, and WindSpeedaveTrue are all 1, the rotational speed-pitch controller gives a nonlinear 2-degree-per-second pitch rate increase instruction to the original pitch rate, and transmits the instruction to the pitch actuator to perform pitch action, or performs power-limiting operation at a rate of-300 kilowatts per second, and adjusts the threshold value according to the parameter in the instruction, and stops when the power is reduced from three kilowatts to one kilowatt. And the variable pitch action and the limited power operation cannot be triggered again within 300 seconds.
It should be noted that, in the embodiment of the present application, after the wind load shedding control is performed once, the wind load shedding control is not triggered again no matter what state the flag bit is in within the preset time, and after the preset time is reached, the control logic of this time is ended and the timer is cleared, because the present application can collect data in real time and judge whether to set the corresponding flag bit to be positive according to the data, after the preset time is reached, the next round of control can be performed according to the currently determined flag bit state, for example, it is judged whether to perform the wind load shedding control again according to the change condition of the flag bit state after the wind load shedding control is reached.
Therefore, the method and the device have the advantages that data such as measured wind speed, wind direction and generator power are used as control input, the control strategy for reducing the unit limit load is changed by judging the change condition of the control input, the problem that the mode that the extreme wind condition is judged only by the rotating speed of the generator or the wind speed of the anemometer in the related technology is solved, and the limit load influence caused by rapid change of the wind direction is more pertinently solved. And the mode that primary wind load shedding control is triggered within the preset time and secondary triggering is not carried out any more is adopted, so that frequent fluctuation of the state of the wind generating set caused by frequent triggering is avoided.
In summary, the operation control method for the wind generating set for the extreme gust according to the embodiment of the present application solves the problem of the extreme load influence caused by the rapid change of the wind direction by judging the wind direction deviation, and simultaneously comprehensively judges a plurality of factors such as the power change, the wind speed change and the wind direction deviation. The collected wind speed and wind direction signal lamps are subjected to sliding average processing, the influence of unnecessary measurement interference signals on the control effect is avoided, parameters such as measured wind speed and wind direction exceed a threshold value to serve as conditions for executing load reduction control, the situation that the unit operation strategy is changed due to the fact that the wind speed is low and impact on the bending moment of the unit is not caused is avoided, the generated energy of the unit is guaranteed, whether the unit faces to extreme gust or not can be accurately judged, the probability of misjudgment is reduced, the control strategy for timely and efficiently changing the unit under the situation that the unit faces to the extreme gust is facilitated, and the limit load borne by the unit is reduced. And in addition, the mode that secondary triggering is not performed for a period of time after the wind load shedding control is triggered is adopted, so that the limit load caused by the extreme wind direction change of the wind generating set is reduced, frequent fluctuation of the state of the wind generating set caused by frequent triggering is avoided, and the stable operation of the wind generating set is favorably maintained.
In order to more clearly describe the operation control method of the wind generating set for the extreme gust according to the embodiment of the present application, a specific embodiment of the operation control method of the wind generating set for the extreme gust is described in detail below. Fig. 3 and 4 are schematic flowcharts of this embodiment, fig. 3 depicts steps of determining whether to mark each flag bit as 1 according to the collected data, and fig. 4 depicts steps of a control logic for wind load shedding according to the flag bits. As shown in fig. 3 and 4, in the present embodiment, the operation control of the wind turbine generator set includes the following steps:
1. and detecting the wind speed measured by the current anemometer and transmitting a measurement signal to the master control PLC.
2. The anemometer wind speed was averaged for a long time constant of 15 seconds and recorded as WindSpeedLave.
3. The anemometer measured wind speed was averaged for a short time constant of 0.5 seconds and recorded as WindSpeedSave.
4. And acquiring a set wind speed threshold value WindSpeedThreshold.
5. And (3) subtracting the WindSpeedSave obtained in the step (3) from the WindSpeedLave obtained in the step (2) and comparing the subtracted result with a preset wind speed threshold value WindSpeedThreshold.
6. If its threshold is not exceeded, the unit operating state does not change and is marked windspeedfail 0.
7. If the threshold value is exceeded, the mark is WindSpeedTrue-1.
8. And detecting the wind direction measured by the current anemoscope, and transmitting the measurement signal to the master control PLC.
9. The anemometry wind direction is subjected to short time constant 0.2 second sliding average and subtracted from the machine head direction to be recorded as winddirectionerror save.
10. And acquiring the set wind direction threshold value WindDirectionErrorThreshold.
11. It is compared with a preset wind direction threshold value WindDirectionErrorThreshold.
12. If its threshold is not exceeded, the unit operational status does not change and is marked as WindDirectionErrorFalse ═ 0.
13. If the threshold value is exceeded, the flag is winddirectortrue ═ 1.
14. And detecting the rotating speed and the torque of the generator at the current moment, and transmitting a measurement signal to the master control PLC.
15. And multiplying the rotating speed of the generator at the current moment obtained in the step 14 by the torque to obtain the Power _ now of the generator at the current moment.
16. And detecting the rotating speed and the torque of the generator at the previous moment, and transmitting a measurement signal to the master control PLC.
17. And multiplying the rotating speed and the torque of the generator at the previous moment obtained in the step 16 to obtain the Power Power _ last of the generator at the previous moment.
18. And subtracting the Power _ now of the generator at the current moment obtained in the step 15 from the Power _ last of the generator at the previous moment obtained in the step 17 to obtain Power _ diff.
19. And acquiring a control cycle constant control.
20. And dividing the Power _ diff obtained in the step 18 by the control to obtain the Power speed Power _ vel.
21. And acquiring a preset Power-speed Threshold value Power _ Threshold of the generator.
22. The generator Power speed Power _ vel is compared with a preset generator Power speed Threshold value Power _ Threshold.
23. If its threshold is not exceeded, the unit operating state does not change and is marked as PowerVelFalse 0.
24. If the threshold value is exceeded, the label is PowerVelTrue 1.
25. And detecting the wind speed measured by the current anemometer and transmitting a measurement signal to the master control PLC.
26. And detecting the wind speed of the anemometer in the current detection period, carrying out long-time constant 10-second sliding average on the wind speed measured by the anemometer, and recording as WindSpeedave.
27. WindSpeedave is compared to a preset wind speed threshold WindSpeedaveThreshold.
28. If its threshold is not exceeded, the unit operational status does not change and is marked as WindSpeedaveFalse 0.
29. If the threshold value is exceeded, the mark is windspeedvetrettrue 1.
30. When the flag positions WindSpeedTrue, winddirectortrue, PowerVelTrue and WindSpeedaveTrue are all 1, the rotating speed-variable pitch controller gives a nonlinear 2-degree-per-second variable pitch speed command which is increased to the original variable pitch speed command and transmits the command to the variable pitch executing mechanism to perform variable pitch action or perform power-limited operation at the speed of-300 kilowatts per second. And starts counting time 0. The time is accumulated every control period.
31. The dead time setting parameter duration is acquired. The dead time is the preset time.
32. And when the time is less than the duration time, accumulating the time at the same time when the operation control strategy of the unit is not changed even if the judgment condition of the 30 th step is satisfied.
33. When the time is greater than the duration, the time value reset initial value is equal to 0.
In order to implement the above embodiments, the present application further provides an operation control system for a wind generating set with an extreme wind gust, and fig. 4 is a schematic structural diagram of the operation control system for the wind generating set with the extreme wind gust according to the embodiments of the present application, and as shown in fig. 4, the system includes a first calculating module 100, a second calculating module 200, a third calculating module 300, a fourth calculating module 400 and a control module 500.
The first calculation module 100 is configured to obtain a wind speed detected by an anemometer of the wind turbine generator system, perform moving average calculation of a first time constant and moving average calculation of a second time constant on the wind speed respectively to obtain a first wind speed average value and a second wind speed average value, and determine whether to set a first wind speed flag bit to be positive according to the first wind speed average value and the second wind speed average value, where the first time constant is greater than the second time constant.
And the second calculation module 200 is configured to obtain a wind direction detected by a wind vane of the wind turbine generator system, perform a sliding average calculation of a third time constant on the wind direction to obtain a wind direction mean value, and determine whether to set the wind direction flag bit to be positive according to the wind direction mean value.
The third calculating module 300 is configured to detect the power of the generator of the wind turbine generator system at the current time, calculate the power speed of the generator according to the power at the current time, and determine whether to set the power speed flag to be positive according to the power speed.
The fourth calculating module 400 is configured to perform a running average calculation of a fourth time constant on the wind speed to obtain a third wind speed average value, and determine whether to set the second wind speed flag bit to be positive according to the third wind speed average value, where the fourth time constant is greater than the second time constant and less than the first time constant.
And the control module 500 is configured to perform wind load shedding control once within a preset time and maintain a control strategy after the wind load shedding control is performed if the first wind speed flag bit, the wind direction flag bit, the power speed flag bit, and the second wind speed flag bit are all set to be positive.
Optionally, in an embodiment of the present application, the first computing module 100 is specifically configured to: acquiring a preset first wind speed threshold; calculating a difference value of the first wind speed average value and the second wind speed average value, and comparing the difference value with a first wind speed threshold value; if the difference value is less than or equal to the first wind speed threshold value, maintaining the running state of the wind generating set; and if the difference is larger than the first wind speed threshold value, setting the first wind speed flag bit to be positive.
Optionally, in an embodiment of the present application, the second calculating module 200 is specifically configured to: acquiring a preset wind direction threshold; calculating a difference value between the wind direction mean value and the machine head direction of the wind generating set, and comparing the difference value with a wind direction threshold value; if the difference value is less than or equal to the wind direction threshold value, maintaining the running state of the wind generating set; and if the difference value is greater than the wind direction threshold value, setting the wind direction flag bit to be positive.
Optionally, in an embodiment of the present application, the third computing module 300 is specifically configured to: detecting the power of a generator of the wind generating set at the previous moment adjacent to the current moment, and subtracting the power at the current moment from the power at the previous moment to obtain a power difference; dividing the power difference by the control period to obtain a power speed of the generator, and comparing the power speed with a preset power speed threshold; if the power speed is less than or equal to the power speed threshold value, maintaining the running state of the wind generating set; and if the power speed is greater than the power speed threshold, setting the power speed flag bit to be positive.
Optionally, in an embodiment of the present application, the fourth calculating module 400 is specifically configured to: acquiring a preset second wind speed threshold, wherein the second wind speed threshold is larger than the first wind speed threshold; comparing the third wind speed average value with a second wind speed threshold value; if the third wind speed average value is less than or equal to the second wind speed threshold value, maintaining the running state of the wind generating set; and if the third wind speed average value is larger than the second wind speed threshold value, setting the second wind speed flag bit to be positive.
Optionally, in an embodiment of the present application, the control module 500 is specifically configured to send a non-linear pitch command to the pitch actuator to increase the pitch rate and/or a power limit command to the engine to decrease the operating power.
It should be noted that the foregoing explanation of the embodiment of the operation control method for a wind turbine generator set used in an extreme gust is also applicable to the system of the embodiment, and the details are not repeated here
To sum up, the operation control system for the wind generating set with extreme gust of the embodiment of the application solves the problem of the influence of the extreme load caused by the rapid change of the wind direction by judging the deviation of the wind direction, and simultaneously comprehensively judges multiple factors such as the change of the comprehensive power, the change of the wind speed and the deviation of the wind direction. The method can avoid unnecessary measurement interference signals from influencing the control effect, avoid changing the operation strategy of the unit due to the fact that the wind speed is low and impact and other conditions are not caused to the bending moment of the unit, and ensure the generating capacity of the unit, thereby accurately judging whether the unit faces to the extreme gust or not at present, reducing the probability of misjudgment, being beneficial to timely and efficiently changing the control strategy of the unit under the condition that the unit faces to the extreme gust, and reducing the limit load born by the unit. And in addition, the mode that secondary triggering is not performed for a period of time after the wind load shedding control is triggered is adopted, so that the limit load caused by the extreme wind direction change of the wind generating set is reduced, frequent fluctuation of the state of the wind generating set caused by frequent triggering is avoided, and the stable operation of the wind generating set is favorably maintained.
In order to achieve the above embodiments, the present application also proposes a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements an operation control method of a wind park for extreme wind gusts as described in any of the above embodiments.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. An operation control method of a wind generating set for extreme gust is characterized by comprising the following steps:
acquiring wind speed detected by an anemoscope of a wind generating set, respectively performing sliding average calculation of a first time constant and sliding average calculation of a second time constant on the wind speed to acquire a first wind speed average value and a second wind speed average value, and judging whether a first wind speed flag bit is set to be positive or not according to the first wind speed average value and the second wind speed average value, wherein the first time constant is greater than the second time constant;
acquiring the wind direction detected by a wind direction indicator of the wind generating set, performing sliding average calculation of a third time constant on the wind direction to acquire a wind direction mean value, and judging whether a wind direction flag bit is set to be positive or not according to the wind direction mean value;
detecting the power of a generator of the wind generating set at the current moment, calculating the power speed of the generator according to the power of the current moment, and judging whether a power speed flag bit is set to be positive or not according to the power speed;
performing sliding average calculation of a fourth time constant on the wind speed to obtain a third wind speed average value, and judging whether a second wind speed flag bit is set to be positive according to the third wind speed average value, wherein the fourth time constant is greater than the second time constant and less than the first time constant;
and if the first wind speed zone bit, the wind direction zone bit, the power speed zone bit and the second wind speed zone bit are all set to be positive, carrying out wind load shedding control once within preset time and maintaining a control strategy after the wind load shedding control.
2. The control method according to claim 1, wherein the determining whether to set the first wind speed flag bit to be positive according to the first wind speed average value and the second wind speed average value comprises:
acquiring a preset first wind speed threshold;
calculating a difference value of the first wind speed average value and the second wind speed average value, and comparing the difference value with the first wind speed threshold value;
if the difference value is smaller than or equal to the first wind speed threshold value, maintaining the running state of the wind generating set;
and if the difference is larger than the first wind speed threshold value, setting the first wind speed flag bit to be positive.
3. The control method according to claim 1, wherein the determining whether to set the wind direction flag bit to be positive according to the wind direction mean value includes:
acquiring a preset wind direction threshold;
calculating a difference value between the wind direction mean value and the machine head direction of the wind generating set, and comparing the difference value with the wind direction threshold value;
if the difference value is smaller than or equal to the wind direction threshold value, maintaining the running state of the wind generating set;
and if the difference value is larger than the wind direction threshold value, setting the wind direction flag bit to be positive.
4. The control method according to claim 1, wherein the calculating the power speed of the generator according to the power at the current moment and determining whether to set the power speed flag to be positive according to the power speed comprises:
detecting the power of a generator of the wind generating set at the previous moment adjacent to the current moment, and subtracting the power at the current moment from the power at the previous moment to obtain a power difference;
dividing the power difference by a control period to obtain a power speed of the generator, and comparing the power speed with a preset power speed threshold;
if the power speed is less than or equal to the power speed threshold value, maintaining the running state of the wind generating set;
and if the power speed is greater than the power speed threshold, setting the power speed flag bit to be positive.
5. The control method according to claim 1, wherein the determining whether to set the second wind speed flag bit to be positive according to the third wind speed average value comprises:
acquiring a preset second wind speed threshold value, wherein the second wind speed threshold value is larger than the first wind speed threshold value;
comparing the third mean wind speed value with the second wind speed threshold value;
if the third wind speed average value is less than or equal to the second wind speed threshold value, maintaining the running state of the wind generating set;
and if the third wind speed average value is larger than the second wind speed threshold value, setting the second wind speed flag bit to be positive.
6. The control method according to any one of claims 1 to 5, the wind load shedding control, comprising:
and sending a nonlinear pitch instruction for increasing the pitch rate to a pitch actuating mechanism and/or sending a power limiting instruction for reducing the operation power to the engine.
7. An operational control system for a wind generating set for extreme gusts, comprising:
the wind speed detection device comprises a first calculation module, a second calculation module and a control module, wherein the first calculation module is used for acquiring the wind speed detected by an anemoscope of a wind generating set, respectively performing the sliding average calculation of a first time constant and the sliding average calculation of a second time constant on the wind speed to acquire a first wind speed average value and a second wind speed average value, and judging whether a first wind speed flag bit is set to be positive or not according to the first wind speed average value and the second wind speed average value, wherein the first time constant is greater than the second time constant;
the second calculation module is used for acquiring the wind direction detected by a wind direction indicator of the wind generating set, performing sliding average calculation on the wind direction by using a third time constant to acquire a wind direction mean value, and judging whether the wind direction flag bit is set to be positive or not according to the wind direction mean value;
the third calculation module is used for detecting the power of a generator of the wind generating set at the current moment, calculating the power speed of the generator according to the power at the current moment, and judging whether the power speed flag bit is set to be positive or not according to the power speed;
the fourth calculation module is used for performing sliding average calculation on a fourth time constant on the wind speed to obtain a third wind speed average value, and judging whether a second wind speed flag bit is set to be positive or not according to the third wind speed average value, wherein the fourth time constant is greater than the second time constant and less than the first time constant;
and the control module is used for carrying out primary wind load shedding control within preset time and maintaining a control strategy after the wind load shedding control if the first wind speed zone bit, the wind direction zone bit, the power speed zone bit and the second wind speed zone bit are all set to be positive.
8. The control system of claim 7, wherein the first computing module is specifically configured to:
acquiring a preset first wind speed threshold;
calculating a difference value of the first wind speed average value and the second wind speed average value, and comparing the difference value with the first wind speed threshold value;
if the difference value is smaller than or equal to the first wind speed threshold value, maintaining the running state of the wind generating set;
and if the difference is larger than the first wind speed threshold value, setting the first wind speed flag bit to be positive.
9. The control system of claim 7, wherein the second calculation module is specifically configured to:
acquiring a preset wind direction threshold;
calculating a difference value between the wind direction mean value and the machine head direction of the wind generating set, and comparing the difference value with the wind direction threshold value;
if the difference value is smaller than or equal to the wind direction threshold value, maintaining the running state of the wind generating set;
and if the difference value is larger than the wind direction threshold value, setting the wind direction flag bit to be positive.
10. A non-transitory computer-readable storage medium having stored thereon a computer program, wherein the computer program, when executed by a processor, implements the method of operation control of a wind park for extreme wind gusts according to any of claims 1-6.
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