A control method and system of a wind turbine generator, an electronic device, and a storage medium

Abstract

The application discloses a kind of wind turbine control method, system, electronic equipment and storage medium, involve wind power generation field, only set in wind turbine part wind turbine installation has been detected clearance equipment, these installed clearance detection equipment wind turbine can be as front row unit, the clearance value detected by clearance detection equipment is realized to the judgment of front row unit clearance risk by field control platform, other wind turbine without installing clearance detection equipment as rear row unit can be associated with front row unit by field control platform, in the case where front row unit exists clearance risk, whether the rear row unit corresponding to front row unit exists clearance risk can be further determined by absolute wind direction, unit association is carried out by the interconnection function of field control platform, selects part of representative wind turbine installation clearance detection equipment, to reduce blade sweep tower risk with smaller cost, improve the overall safety of wind farm.

Description

Technical Field

[0001] This invention relates to the field of wind power generation, and in particular to a control method, system, electronic device and storage medium for wind turbine generators. Background Technology

[0002] With the development of wind turbine technology and the increasing demands for energy efficiency, wind turbine blades are becoming longer and more flexible. However, due to the complex geographical environment, wind conditions, cold waves, typhoons, and other influencing factors at wind turbine sites, the blades are at risk of tower swiping. Tower swiping can result in blade replacement or even the scrapping of the entire turbine, leading to significant economic and property losses. Therefore, how to inspect wind turbine blades to prevent tower swiping is a pressing technical problem that needs to be solved.

[0003] In existing technologies, the main approach involves installing clearance monitoring equipment on each wind turbine in a wind farm. This equipment detects the blade clearance, also known as tower clearance, which refers to the shortest distance between the tip of the wind turbine blade and the tower wall at the tip height. Each clearance monitoring device is connected to a corresponding control system, creating a one-to-one correspondence between the equipment, control system, and wind turbine. The control system receives data from the corresponding clearance monitoring device to prevent tower sweeping by individual wind turbines. However, this approach requires installing clearance monitoring equipment and setting up a corresponding control system for each wind turbine, thus increasing the overall cost of the wind farm. Furthermore, since the control systems of each wind turbine are independent, updates to the program require updating the control system of each turbine, reducing efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a control method, system, electronic equipment, and storage medium for wind turbine units. By using the interconnection function of the wind farm control platform to associate the units, and by selecting a number of representative wind turbine units to install air clearance detection equipment, the risk of blade sweeping can be reduced at a lower cost, thereby improving the overall safety of the wind farm.

[0005] To address the aforementioned technical problems, this invention provides a control method for wind turbine generators, applied to a wind farm control platform. The wind turbine generators include front-row turbines equipped with clearance detection equipment and rear-row turbines located in an adjacent area of ​​the front-row turbines. Each wind turbine generator is connected to the output terminal of the wind farm control platform, and the output terminal of the clearance detection equipment is connected to the input terminal of the wind farm control platform. The control method for the wind turbine generators includes:

[0006] Determine the air clearance value of the front-row unit output by the air clearance detection equipment;

[0007] Based on the airspace value, determine whether there is an airspace risk for the front-row units, and control the front-row units to execute the safety strategy corresponding to the judgment result;

[0008] When there is an airspace risk to the front-row units, the system determines whether there is an airspace risk to the rear-row units based on the absolute wind direction of the location of the front-row units, and controls the rear-row units to execute the safety strategy corresponding to the determination result.

[0009] Optionally, before determining whether the upstream unit has a net air risk based on the net air value, the method further includes:

[0010] The clearance value of the front-row unit output by the clearance detection equipment is corrected based on a pre-built blade pre-bending model library. The blade pre-bending model library includes the correspondence between the clearance value detected by the clearance detection equipment and the corrected clearance value.

[0011] Optionally, before determining whether there is an airspace risk to the rear units based on the absolute wind direction of the location of the front-row units, the method further includes:

[0012] The relative positional relationship between the front row of units and the rear row of units is determined based on the unit locations of the front row of units and the rear row of units.

[0013] Path optimization is performed in a sector with the absolute wind direction at the location of the front-row units to determine the mapping relationship between the absolute wind direction at the location of the front-row units and the rear-row units.

[0014] Optionally, when there is an airspace risk to the front-row units, determining whether there is an airspace risk to the rear-row units based on the absolute wind direction at the location of the front-row units includes:

[0015] When there is an airspace risk to the front-row units, determine the absolute wind direction of the location of the front-row units and determine whether there are rear-row units corresponding to the absolute wind direction based on the mapping relationship;

[0016] If so, it is determined that there is an airspace risk for the rear units corresponding to the absolute wind direction.

[0017] Optionally, the step of determining whether the front-row units have a clearance risk based on the clearance value, and controlling the front-row units to execute a safety strategy corresponding to the determination result, includes:

[0018] Determine the relationship between the airspace value, the first airspace threshold, and the second airspace threshold, wherein the second airspace threshold is greater than the first airspace threshold;

[0019] If the airspace value is greater than the first airspace threshold, it is determined that there is no airspace risk for the front-row generator unit, and the additional pitch angle of the front-row generator unit is set to 0.

[0020] If the airspace value is not greater than the first airspace threshold but greater than the second airspace threshold, it is determined that there is an airspace risk for the front-row generator unit, and the additional pitch angle of the front-row generator unit is set to a preset value.

[0021] If the air clearance value is not greater than the second air clearance threshold, it is determined that there is an air clearance risk for the front-row units, and the front-row units are shut down.

[0022] Optionally, before determining the relationship between the headroom value, the first headroom threshold, and the second headroom threshold, the method further includes:

[0023] Determine whether the current wind speed of the front-row units is greater than the initial wind speed;

[0024] If so, proceed to the step of determining the magnitude relationship between the net air value, the first net air threshold, and the second net air threshold.

[0025] Optionally, before determining the relationship between the headroom value, the first headroom threshold, and the second headroom threshold, the method further includes:

[0026] Receive the clearance value status bit output by the clearance detection device;

[0027] Based on the status bit of the air clearance value, determine whether the air clearance detection equipment has a malfunction;

[0028] If not, proceed to the step of determining the relationship between the net air value, the first net air threshold, and the second net air threshold.

[0029] To address the aforementioned technical problems, this invention also provides a control system for a wind turbine generator set, applied to a field control platform. The wind turbine generator set includes a front row of turbines equipped with clearance detection equipment and a rear row of turbines located in an adjacent area of ​​the front row. Each wind turbine generator set is connected to the output terminal of the field control platform, and the output terminal of the clearance detection equipment is connected to the input terminal of the field control platform. The control system for the wind turbine generator set includes:

[0030] The air clearance value determination unit is used to determine the air clearance value of the front row unit output by the air clearance detection equipment;

[0031] The front-row unit judgment unit is used to determine whether the front-row unit has a clearance risk based on the clearance value, and to control the front-row unit to execute the safety strategy corresponding to the judgment result.

[0032] The rear-row unit judgment unit is used to determine whether the rear-row unit has an airspace risk based on the absolute wind direction of the location of the front-row unit when the front-row unit has an airspace risk, and to control the rear-row unit to execute the safety strategy corresponding to the judgment result.

[0033] To address the aforementioned technical problems, the present invention also provides an electronic device, comprising:

[0034] Memory, used to store computer programs;

[0035] A processor for implementing the steps of the wind turbine control method as described above.

[0036] To address the aforementioned technical problems, the present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the wind turbine control method described above.

[0037] This invention provides a control method for wind turbine units. Only a portion of the wind turbine units are equipped with clearance detection equipment. These turbine units can be considered as front-row units. The wind farm control platform uses the clearance values ​​detected by the equipment to assess the clearance risk of the front-row units. Other wind turbine units without clearance detection equipment, considered as rear-row units, can be associated with the front-row units through the wind farm control platform. If there is a clearance risk in the front-row units, the absolute wind direction can be used to further determine whether there is a clearance risk in the corresponding rear-row units. By using the interconnection function of the wind farm control platform to associate the units and selecting representative wind turbine units to install clearance detection equipment, the risk of blade sweeping can be reduced at a lower cost, thus improving the overall safety of the wind farm.

[0038] The present invention also provides a control system, electronic equipment and computer-readable storage medium for a wind turbine, which have the same beneficial effects as the control method for the wind turbine described above. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the prior art and embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 A flowchart illustrating a control method for a wind turbine provided by the present invention;

[0041] Figure 2 A schematic diagram of the structure of a wind turbine generator provided by the present invention;

[0042] Figure 3 A schematic diagram illustrating the swaying process of a wind turbine generator provided by the present invention;

[0043] Figure 4 A schematic diagram of the control flow of a field control platform provided by the present invention;

[0044] Figure 5 A schematic diagram showing the comparison between the measurement results and actual results of an airspace detection device provided by the present invention;

[0045] Figure 6 A schematic diagram illustrating the calibration process of the measurement structure of an air clearance detection device provided by the present invention;

[0046] Figure 7 A schematic diagram of a process for obtaining the net air value of the front-row units is provided by the present invention;

[0047] Figure 8 A schematic diagram of a clearance status identification and control provided by the present invention;

[0048] Figure 9 A flowchart illustrating another wind turbine control method provided by the present invention;

[0049] Figure 10 A schematic diagram of the control system of a wind turbine generator provided by the present invention;

[0050] Figure 11 This is a schematic diagram of the structure of an electronic device provided by the present invention. Detailed Implementation

[0051] The core of this invention is to provide a control method, system, electronic equipment, and storage medium for wind turbine units. By connecting the units through the interconnection function of the wind farm control platform, and by selecting a number of representative wind turbine units to install air clearance detection equipment, the risk of blade sweeping can be reduced at a lower cost, thereby improving the overall safety of the wind farm.

[0052] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] Please refer to Figure 1 , Figure 1 A flowchart illustrating a wind turbine control method provided by this invention; please refer to... Figure 2, Figure 2 This invention provides a structural schematic diagram of a wind turbine generator set; please refer to... Figure 3 , Figure 3 This invention provides a schematic diagram of the swaying process of a wind turbine generator set. To solve the above-mentioned technical problems, this invention provides a control method for a wind turbine generator set, applied to a field control platform. The wind turbine generator set includes a front row of turbines equipped with clearance detection equipment and a rear row of turbines located in the adjacent area of ​​the front row. Each wind turbine generator set is connected to the output terminal of the field control platform, and the output terminal of the clearance detection equipment is connected to the input terminal of the field control platform. The control method for the wind turbine generator set includes:

[0054] S11: Determine the air clearance value of the front-row units output by the air clearance detection equipment;

[0055] It is easy to understand that the wind turbines in the front row of units must be equipped with air clearance monitoring equipment. This equipment can directly or indirectly measure the air clearance value of the blades of the front row of units. This application does not specifically limit the specific type and implementation method of the air clearance monitoring equipment. Figure 2 and Figure 3 For example, clearance detection equipment can include lidar, tilt sensors, and satellite positioning sensors. The lidar emits laser light from its emission window, which hits the blade tip, thus measuring the distance D between the lidar and the blade tip. The lidar is installed on the nacelle of the wind turbine, and its installation position and the angle of the emission window can be set according to the actual blade conditions. During installation, it is important to ensure that the emitted laser light accurately hits the blade tip. The tilt sensor is installed as parallel to the nacelle as possible. When the wind turbine nacelle shakes, it can detect changes in the nacelle's tilt angle. The satellite positioning sensor is usually installed on the top of the nacelle and can detect displacement changes during nacelle shaking. The specific settings of the lidar, tilt sensor, and satellite positioning sensor can be selected and adjusted according to the actual application.

[0056] Specifically, such as Figure 2 As shown, the C value of the air clearance value theoretically detected by the air clearance detection equipment for the wind turbine is... stop The calculation formula is: C stop=D*sinθ+XR; where D is the distance between the lidar and the blade tip as measured by the lidar, θ is the angle between the lidar's emission window and the vertical line to the ground, which can be determined according to the lidar's installation, X is the distance between the lidar's location and the tower center along the main axis, which can be determined according to the lidar's installation, and R is the radius of the tower at the blade tip height; In the actual operation of the wind turbine, the wind turbine will be affected by wind loads, etc., causing the nacelle to sway, resulting in displacement and tilt changes. At this time, the satellite positioning sensor can measure the displacement change ΔX of the nacelle, and the tilt sensor can measure the tilt change Δθ of the nacelle, such as... Figure 3 As shown, the measured clearance value C of the wind turbine during actual operation is obtained by the clearance detection equipment. working The calculation formula is: C working =D*sin(θ+Δθ)+X-ΔX-R; where D is the distance between itself and the blade tip measured by the lidar, θ is the angle between the lidar's emission window and the vertical line to the ground, X is the distance between the lidar's location and the tower center along the main axis, R is the tower radius corresponding to the blade tip height, Δθ is the nacelle tilt angle change measured by the tilt sensor, and ΔX is the nacelle displacement change measured by the satellite positioning sensor; using the above formula, the field control platform can further calculate the clearance value of the blade tips of the front-row units based on the detection results of the clearance detection equipment.

[0057] It should be noted that, to ensure the accurate calculation of the blade tip clearance value by combining the nacelle tilt angle change measured by the tilt sensor with the angle between the lidar's emission window and the vertical line to the ground, the tilt sensor should ideally be installed next to the lidar, as close as possible to it, thereby improving the accuracy of the final clearance value calculation. In practical applications, the clearance value of the front-row unit's blade tips can be determined through a process of fusion measurement using multiple sensors, as described above. Other methods can also be used to implement the clearance detection equipment; this application does not impose any particular limitations on this.

[0058] S12: Determine whether there is any airspace risk in the front-row units based on the airspace value, and control the front-row units to execute the safety strategy corresponding to the judgment result;

[0059] It is easy to understand that if the clearance between the blade tip and the wind turbine tower is less than the safe distance, it will not only affect the performance and efficiency of the wind turbine generator, but also easily lead to a safety accident of blade impact with the wind turbine tower, namely "tower sweep". Clearance risk characterizes the difference between the clearance value of the blade tip and the safe distance. The smaller the clearance value of the blade tip, the greater the clearance risk of the wind turbine generator, and the more likely tower sweep will occur. Therefore, the clearance value can directly reflect the distance between the blade tip of the preceding unit and the tower, i.e., the tower arm. Thus, it is possible to directly judge whether there is a clearance risk or whether there is a possibility of a clearance risk for the preceding units based on the specific clearance value. Under different judgment results, different corresponding safety strategies can be set to ensure the safety of the preceding units and avoid tower sweep. This application does not make any special restrictions on the specific implementation of the judgment results and the corresponding safety strategies. Different clearance risk levels can be set according to different clearance value conditions, and each clearance risk level corresponds to a different safety control strategy. The safety strategy can be implemented by controlling the pitch angle of the blades of the preceding units or adjusting other blade parameters.

[0060] S13: When there is an airspace risk to the front row of units, determine whether there is an airspace risk to the rear row of units based on the absolute wind direction of the front row of units, and control the rear row of units to execute the safety strategy corresponding to the judgment result.

[0061] It should be noted that, for all wind turbines in the same wind farm, this application only selected a portion of them to be equipped with air clearance monitoring equipment. These wind turbines with air clearance monitoring equipment are designated as the front-row turbines. Based on the location of each wind turbine, those located in the vicinity of the front-row turbines are designated as the rear-row turbines. Since the front-row turbines and their corresponding rear-row turbines are in adjacent areas, their geographical locations and environmental factors such as weather conditions are roughly the same. Therefore, the farm control platform can determine the air clearance risk of the rear-row turbines based on the air clearance risk of the front-row turbines. When selecting the front-row turbines, it is necessary to ensure that other wind turbines in the wind farm without air clearance monitoring equipment can be included in the corresponding rear-row turbines of each front-row turbine. Furthermore, the front-row and rear-row turbines are linked through the farm control platform. Therefore, this application can use the interconnection function of the farm control platform to link the turbines, selecting a portion of representative wind turbines to install air clearance monitoring equipment, rather than installing it on all wind turbines, to reduce the risk of blade sweeping at a lower cost and improve the overall safety of the wind farm.

[0062] It's easy to understand that the rear-row turbines may or may not be equipped with airspace monitoring equipment. However, the rear-row turbines definitely include all those without airspace monitoring equipment. Furthermore, considering that when the front-row turbines face airspace risks, not all of their rear-row turbines necessarily face such risks; it mainly depends on the current wind direction. Therefore, when the front-row turbines face airspace risks, it's necessary to determine whether the rear-row turbines also face risks based on the absolute wind direction of the front-row turbines' location. This achieves airspace control logic for all wind turbines in the wind farm, and utilizes the farm control platform to implement the farm-level control logic.

[0063] It should be noted that the wind farm control platform refers to the wind farm-level control platform, that is, the overall control system of the entire wind farm. Wind farm-level control technology is primarily based on this platform. The wind farm control platform enables interconnection and interoperability among all wind turbines in the wind farm. By developing and deploying software algorithms corresponding to the control methods provided in this application for the wind turbines within the control platform, coordinated control of the entire wind farm can be quickly achieved. The control platform can interconnect all wind turbines via a communication ring network. The control platform and each wind turbine can communicate through various communication interfaces for control, sensor data acquisition, command issuance, and other operations. The control platform can have built-in Python environments and other scientific computing libraries, allowing for real-time and efficient analysis and calculation of wind turbine operating data using Python, forming modular algorithm packages to achieve coordinated control among the wind turbines in the wind farm. This application does not specifically limit the specific type and implementation method of the control platform. The control platform has better computing power, and if program updates are needed, only one server needs to be used, greatly reducing the application and execution costs of control strategies.

[0064] Understandably, this application does not impose any particular limitations on the method for determining the absolute wind direction of the front-row turbines. Typically, wind turbines are equipped with a wind vane located at the rear of the nacelle. However, the wind vane measures the relative wind direction relative to the nacelle's heading. In the collaborative control of the field control platform, the absolute wind direction of the front-row turbines is needed as a reference to correctly locate the corresponding rear-row turbines. Therefore, based on the wind vane measurement, the nacelle heading can be further determined. Finally, the absolute wind direction of the front-row turbines is obtained by adding the nacelle heading to the relative wind direction obtained from the wind vane strategy. There are multiple options for determining the nacelle heading, and this application does not impose any particular limitations. One method is to use the wind turbine's latitude, longitude, altitude, and cable twist angle as a basis, combined with the deviation angle between the cable twist angle measured by an angle measuring instrument on the wind turbine and the nacelle heading, and the northward compensation angle based on the cable twist angle to calculate the nacelle heading. In addition, if the wind turbine is equipped with satellite positioning and orientation equipment, the nacelle heading can be obtained directly through this equipment.

[0065] It is not difficult to understand that this application does not make any special restrictions on the process of judging the airspace risk of the rear units and the corresponding safety strategies. They can be consistent with the process of judging the airspace risk of the front units and the setting of the corresponding safety strategies, or different safety strategies can be set according to the actual application.

[0066] Specifically, please refer to Figure 4 , Figure 4 This invention provides a schematic diagram of the control flow of a wind farm control platform. The platform first obtains the clearance value of the front-row turbines through clearance detection equipment, thereby continuously monitoring the clearance value of the wind turbines equipped with clearance detection equipment and determining in real time whether these front-row turbines pose a risk. If a risk is detected in a front-row turbine, the absolute wind direction of that turbine is calculated, and a pre-built mapping table of back-row turbines and absolute wind direction is used to find the back-row turbines that will be affected. Finally, safety strategies such as additional pitch angle adjustments are implemented for the potentially risky back-row turbines to ensure they smoothly overcome the risk. The main field-level control logic of the entire wind turbine control method is to first identify whether the front-row turbines are at risk. When some front-row turbines are identified as at risk, the interconnection function of the control platform is used to intervene in advance on other potentially risky back-row turbines in the wind farm, thereby achieving the effect of coordinated control between turbines and ensuring the overall safety of the wind farm. Wind turbines equipped with air clearance monitoring equipment can directly measure their air clearance value. Wind turbines without air clearance monitoring equipment can be associated with wind turbines equipped with air clearance monitoring equipment through the field control platform, without having to install air clearance equipment on all wind turbines in the field. This reduces costs while ensuring the air clearance safety of all units in the field.

[0067] In practical applications, under certain special circumstances, when the wind farm control platform identifies that most of the front-row turbines in a certain wind direction are in a risky state, it indicates that the wind farm as a whole is facing extreme wind conditions. At this time, control measures such as reducing the capacity of the entire wind farm can be directly taken to control all wind turbines in the entire wind farm to avoid airspace risks.

[0068] This invention provides a control method for wind turbine units. Only a portion of the wind turbine units are equipped with clearance detection equipment. These turbine units can be considered as front-row units. The wind farm control platform uses the clearance values ​​detected by the equipment to assess the clearance risk of the front-row units. Other wind turbine units without clearance detection equipment, considered as rear-row units, can be associated with the front-row units through the wind farm control platform. If there is a clearance risk in the front-row units, the absolute wind direction can be used to further determine whether there is a clearance risk in the corresponding rear-row units. By using the interconnection function of the wind farm control platform to associate the units and selecting representative wind turbine units to install clearance detection equipment, the risk of blade sweeping can be reduced at a lower cost, thus improving the overall safety of the wind farm.

[0069] Based on the above embodiments:

[0070] Please refer to Figure 5 , Figure 5 This is a schematic diagram comparing the measurement results and actual results of an airspace detection device provided by the present invention; please refer to... Figure 6 , Figure 6 This invention provides a schematic diagram of the calibration process for the measurement structure of an air clearance detection device; please refer to... Figure 7 , Figure 7 This invention provides a schematic flowchart for obtaining the headroom value of the preceding generating units; as an optional embodiment, before determining whether there is a headroom risk for the preceding generating units based on the headroom value, the following steps are also included:

[0071] The air clearance values ​​of the front-row units are corrected based on a pre-built blade pre-bending model library. The blade pre-bending model library includes the correspondence between the detected air clearance values ​​and the corrected air clearance values.

[0072] It's easy to understand that when the air clearance monitoring equipment includes lidar, tilt sensors, and satellite positioning sensors, because the lidar's installation angle is fixed, when the wind load is large and the blades bend towards the tower, the laser beam cannot reach the very tip of the blade in real time. Figure 5As shown, there is an error between the measured clearance value and the expected clearance value. This means that the clearance value calculated from the data output by the clearance detection equipment to the field control platform has a certain error and needs correction. Therefore, before application, simulations can be performed under different wind conditions to obtain the simulation results of the clearance value detected by the clearance detection equipment and the actual clearance value. This allows for the construction of a blade pre-bending model library. The actual clearance value is used as the corrected clearance value. The blade pre-bending model library includes the correspondence between the measured clearance value and the corrected clearance value. It can be a one-to-one correspondence of measured clearance value and corrected clearance value, as shown in Table 1. Table 1 illustrates the correspondence between measured clearance value and corrected clearance value, including one-to-one correspondences of measured clearance value and corrected clearance value, with all units being meters. Figure 6 As shown in the figure, the dashed lines represent three trajectories of the blades approaching the tower. When the equipment measures a clearance value of C1, the corresponding corrected clearance value is C1. fix When the equipment measures a clearance value of C2, the corresponding corrected clearance value is C2. fix When the equipment measures a clearance value of C3, the corresponding corrected clearance value is C3. fix The two are in a one-to-one correspondence, and C1 can be obtained from the blade pre-bending model library obtained through simulation. fix C2 fix C3 fix .by Figure 7 For example, after the field control platform obtains the distance D, the lateral displacement ΔX of the cabin, and the tilt angle Δθ of the cabin through the fusion of three sensors, it will use a formula to calculate C. working The information related to C can be obtained by looking up Table 1. working The corresponding C fix From obtaining the corrected C working Net airspace correction value C fix By obtaining a blade pre-bending model library through prior simulation and importing it into the main control program of the field control platform, the clearance measurement value can be corrected in real time. This application does not specifically limit the specific type and implementation method of the blade pre-bending model library; Table 1 shows a specific embodiment.

[0073] Table 1. Schematic diagram of the correspondence between measured net clearance value and corrected net clearance value.

[0074]

[0075]

[0076] Specifically, considering the potential errors caused by nacelle sway when the clearance detection equipment detects the clearance value at the blade tip, the field control platform can further correct the measured clearance value based on the pre-entered blade pre-bending model library after determining the clearance value of the front-row units. This improves the accuracy and reliability of the subsequent judgment process on the clearance risk of the front-row units and ensures the precision of the control method for the entire wind turbine.

[0077] As an optional embodiment, before determining whether there is an airspace risk to the rear units based on the absolute wind direction of the front units' location, the method further includes:

[0078] The relative positional relationship between the front and rear units is determined based on the unit locations of the front and rear units.

[0079] Path optimization is performed in the designated sector based on the absolute wind direction of the front-row units to determine the mapping relationship between the absolute wind direction of the front-row units and the rear-row units.

[0080] It is easy to understand that in a wind farm, the relative positions of each wind turbine can be determined based on the latitude and longitude of its location. By performing path optimization in the sector corresponding to the absolute wind direction of the front turbine, the nearest wind turbine corresponding to each sector of the front turbine can be found, thus forming a mapping table of the relationship between each turbine, that is, between the front turbine and its corresponding rear turbine, as shown in Table 2. Table 2 is a mapping table of the relationship between the rear turbine and the absolute wind direction. For example, when turbine 1 is the front turbine, the 67.5 sector of its absolute wind direction corresponds to the rear turbine 2, and the 112.5 sector of its absolute wind direction corresponds to the rear turbine 16. In determining the rear-row units based on the front-row units, the distance can be set in advance according to the actual application scenario of the wind farm. The wind turbines within the set distance corresponding to each sector of the front-row units can be identified as the rear-row units corresponding to the front-row units. Therefore, the adjacent area can be a circular area with the front-row units as the center and the pre-set distance as the radius. The wind turbines within this adjacent area can be regarded as the rear-row units corresponding to the front-row units. This application does not make any special restrictions on the specific implementation of the adjacent area, etc., and can be determined according to factors such as the actual design location of the wind farm.

[0081] Table 2 Rear Units - Absolute Wind Direction Relationship Mapping Table

[0082] 0 / / … 22.5 / / … 45 / / … 67.5 2 3 … 90 / 4 … 112.5 16 17 … 135 15 16 … 157.5 14 15 … 180 / 14 … 202.5 13 / … 225 12 13 … 247.5 11 1 … 270 / / … 292.5 / / … 315 / / … 337.5 / / …

[0083] Specifically, the mapping relationship between the absolute wind direction of the front-row units and the rear-row units can be determined in advance based on the sector of the absolute wind direction of the front-row units. This allows the airspace risk of the rear-row units to be directly determined based on the airspace risk of the front-row units and the absolute wind direction of their location.

[0084] As an optional embodiment, when there is an airspace risk to the front-row units, determining whether there is an airspace risk to the rear-row units based on the absolute wind direction of the front-row units' location includes:

[0085] When there is an airspace risk to the front row of units, determine the absolute wind direction of the location of the front row of units and determine whether there are any rear row units corresponding to the absolute wind direction based on the mapping relationship;

[0086] If so, then it is determined that there is an airspace risk for the rear units corresponding to the absolute wind direction.

[0087] It is easy to understand that since the airspace risk of the front-row units is caused by the wind conditions in the environment, if the front-row units have airspace risk and there are rear-row units in the sector corresponding to the absolute wind direction of their location, then the rear-row units will also have airspace risk due to the influence of this wind. As shown in Table 2, if Unit 1 encounters a risk, and the absolute wind direction of the unit is within the 112.5° sector of the unit's location, it means that Unit 16, which is in the rear row in that direction, may have a risk. That is, the field control platform can use Table 2 to query the number of the rear-row unit corresponding to the front-row unit that has airspace risk when the absolute wind direction is in the specified sector, thereby determining that the rear-row unit with that number has airspace risk.

[0088] Specifically, based on the absolute wind direction of the front-row units and the mapping relationship between the absolute wind direction of the front-row units and the rear-row units, it is possible to determine whether there are rear-row units with airspace risk due to the same absolute wind direction. This facilitates subsequent control of the rear-row units, further improves the process of determining the airspace risk of the rear-row units, and ensures that the rear-row units can avoid airspace risk.

[0089] Please refer to Figure 8 , Figure 8 This invention provides a flowchart for airspace status identification and control; as an optional embodiment, it determines whether there is airspace risk to the preceding units based on the airspace value, and controls the preceding units to execute a safety strategy corresponding to the determination result, including:

[0090] Determine the relationship between the airspace value, the first airspace threshold, and the second airspace threshold, wherein the second airspace threshold is greater than the first airspace threshold.

[0091] If the airspace value is greater than the first airspace threshold, it is determined that there is no airspace risk for the front-row units, and the additional pitch angle of the front-row units is set to 0.

[0092] If the airspace value is not greater than the first airspace threshold but greater than the second airspace threshold, it is determined that there is an airspace risk for the front-row units, and the additional pitch angle of the front-row units is set to the preset value.

[0093] If the airspace value is not greater than the second airspace threshold, it is determined that there is an airspace risk for the front-row units, and the front-row units are shut down.

[0094] It's easy to understand that the specific value of the clearance value directly reflects the clearance risk of the preceding units. Therefore, different clearance risk levels can be defined directly based on the pre-set first and second clearance thresholds. If the second clearance threshold is greater than the first, the clearance value at the blade tips of the preceding units is relatively large, far exceeding the safe distance, and there is no clearance risk or tower swiping, so no additional pitch angle adjustment is needed. If the clearance value is not greater than the first clearance threshold but greater than the second clearance threshold, the clearance value at the blade tips of the preceding units is relatively small, very close to the safe distance, and there may be clearance risk and tower swiping, requiring additional pitch angle adjustment. If the clearance value is not greater than the second clearance threshold, the clearance value at the blade tips of the preceding units is very small, already less than the safe distance, making it very easy for clearance risk and tower swiping to occur, requiring shutdown to ensure safety. The specific values ​​of the first and second clearance thresholds can be set and adjusted according to the actual conditions of the wind farm and the wind turbine blades. For example, the first clearance threshold can be set to 1 and the second clearance threshold to 2.

[0095] Specifically, after obtaining the airspace value of the leading units through the airspace detection equipment, the field control platform further corrects the detected airspace value and calculates the cabin heading of the current leading units. If the airspace value of the leading units is too low, indicating an airspace risk, the absolute wind direction is determined by the cabin heading to assess the airspace risk of the units behind them and implement control measures. Airspace risk levels are classified by pre-setting a first airspace threshold and a second airspace threshold. If the airspace value > the first airspace threshold, there is no airspace risk for the leading units, and the additional pitch angle of the leading units can be set to 0 without additional control. If the second airspace threshold < the airspace value <= the first airspace threshold, there is an airspace risk for the leading units, and the additional pitch angle of the leading units is set to p, where p is a preset value that can be set according to the specific conditions corresponding to the values ​​of the first and second airspace thresholds. If the airspace value <= the second airspace threshold, there is a serious airspace risk for the leading units, requiring a shutdown operation.

[0096] It should be noted that if the rear turbine units also face airspace risk, the safety strategy for the rear turbine units can be implemented using the control method described above. If the airspace value of the front turbine units is no greater than the first airspace threshold and greater than the second airspace threshold, a certain pitch angle is applied to the blades of the front turbine units. If the corresponding rear turbine units also face airspace risk, the same pitch angle is applied to control the rear turbine units. If the airspace value of the front turbine units is no greater than the second airspace threshold, requiring a shutdown to ensure safety, and if the corresponding rear turbine units also face airspace risk, a shutdown is also required to ensure safety. The safety strategy for the rear turbine units typically needs to be consistent with that of the corresponding front turbine units to achieve safe control of the rear turbine units.

[0097] Specifically, by using pre-set first and second airspace thresholds, three intervals are divided, thereby classifying the risk level of airspace risk. Different safety strategies are implemented under different risk levels. The specific division of risk levels can be flexibly adjusted according to actual application conditions, and is not limited to the three intervals formed by the first and second airspace thresholds. This high flexibility can improve the accuracy of safety control for front-row and rear-row wind turbines. Implementing different safety strategies for different risk levels is conducive to the long-term safe and reliable operation of wind turbines and improves the working efficiency of wind turbines.

[0098] As an optional embodiment, before determining the relationship between the headroom value, the first headroom threshold, and the second headroom threshold, the method further includes:

[0099] Determine whether the current wind speed of the front-row units is greater than the initial wind speed;

[0100] If so, proceed to the step of determining the relationship between the net clearance value, the first net clearance threshold, and the second net clearance threshold.

[0101] Considering that wind turbines are unlikely to experience clearance risks at low wind speeds, there is no need to assess clearance risks or implement corresponding safety control measures in such situations. Therefore, before assessing clearance values, the operating status of the wind turbines can be determined by checking if the current wind speed or turbine speed is greater than the initial wind speed or turbine speed. If so, the clearance status assessment process can proceed. If the current wind speed or turbine speed is not greater than the initial wind speed or turbine speed, further assessment using clearance values ​​is unnecessary; the additional pitch angle can be set to 0, or no safety control measures for the turbines can be implemented. The specific value of the initial wind speed can be set and adjusted based on factors such as the actual application scenario of the wind farm. This application does not impose any special limitations on this value. The key is that at the initial wind speed, none of the wind turbines in the wind farm will experience clearance risks, and the blades will not exhibit significant swaying due to this initial wind speed.

[0102] Specifically, the blades of wind turbines also have a certain weight. Therefore, when the wind speed is too low, there is no risk of airspace obstruction for each wind turbine in the wind farm. At this time, there is no need to further judge the specific value of the airspace obstruction, and there is no need to implement too many safety control strategies for the wind turbines. The wind turbines can maintain normal operation. Therefore, before judging the airspace obstruction, a process of judging the wind speed can be added. The airspace obstruction judgment process can be carried out when the wind speed reaches a certain value, which can further improve work efficiency.

[0103] As an optional embodiment, before determining the relationship between the headroom value, the first headroom threshold, and the second headroom threshold, the method further includes:

[0104] Receive the clearance status bit output by the clearance detection equipment;

[0105] Determine whether the air clearance detection equipment is faulty based on the air clearance status bit;

[0106] If not, proceed to the step of determining the relationship between the headroom value, the first headroom threshold, and the second headroom threshold.

[0107] It's easy to understand that the airspace detection equipment can not only output the detection results corresponding to the airspace values ​​of the front-row units, but also be set to output airspace value status bits simultaneously. Taking an airspace detection equipment that includes a lidar, tilt sensor, and satellite positioning sensor as an example, the airspace detection equipment includes these three devices. Each of these three devices will output a detection result and an airspace value status bit. That is, the airspace detection equipment will ultimately output three airspace value status bits and three detection values. The airspace value status bits can be set to 0 or 1 to directly represent the fault status of the corresponding device. If an airspace value status bit indicates that the airspace detection equipment is abnormal, the additional pitch angle of the front-row units will be directly controlled to be set to the preset value. This avoids the abnormality of the airspace detection equipment from causing a misjudgment of airspace risk and ensures the safe and reliable operation of the front-row units. Therefore, the process of determining the airspace status further includes determining whether the airspace value is within the valid range and whether the airspace value status is normal. If the airspace value status is normal, the airspace level is further determined by the airspace value. If the airspace value status is abnormal, the additional pitch angle of the front-row unit is directly set to p. When the airspace value status is abnormal, the unit can also be stopped or operated in other ways to avoid the abnormality of the airspace detection equipment leading to miscontrol of the wind turbine. At the same time, a corresponding prompt module can be added so that the staff can troubleshoot in time.

[0108] Specifically, considering the possibility of equipment failure in the air clearance detection equipment, the air clearance detection equipment can be set to output an air clearance value status bit while outputting detection data to indicate the equipment failure status. When the equipment is working normally, the subsequent air clearance value judgment process can be further carried out. In the case of equipment failure, additional operations such as pitch angle adjustment or shutdown can be used to ensure the safe operation of the front-end units and to quickly carry out troubleshooting.

[0109] As a specific embodiment, please refer to Figure 9 , Figure 9 This is a flowchart illustrating another control method for a wind turbine provided by the present invention; Figure 8 and Figure 9 For example, using clearance threshold 1 as the first clearance threshold and clearance threshold 2 as the second clearance threshold, the clearance measurement value and clearance status of the front-row units are first obtained using clearance detection equipment. Then, the clearance value is calibrated using a pre-built blade pre-bending model library, and then... Figure 8 The control flow shown involves airspace status identification and control, assessing the airspace risk of the front-row units and executing corresponding safety strategies. It then calculates the absolute wind direction corresponding to the front-row units, thereby determining whether there is airspace risk for the rear-row units through front-to-rear identification. If airspace risk exists for the front-row units, advance control is implemented on the rear-row units corresponding to the absolute wind direction. In adopting... Figure 8 The control process shown first determines the operating status of the unit based on the current wind speed, and then uses the clearance value status bit to determine the clearance status. If the clearance value status bit is abnormal, the clearance value is compared with clearance threshold 1 and clearance threshold 2 to determine the specific effective value range of the clearance value and thus determine the clearance level, thereby executing the corresponding three safety strategies.

[0110] Please refer to Figure 10 , Figure 10 This invention provides a structural schematic diagram of a wind turbine control system. To solve the aforementioned technical problems, this invention also provides a wind turbine control system applied to a field control platform. The wind turbine includes a front row of turbines equipped with clearance detection equipment and a rear row of turbines located in the adjacent area of ​​the front row. Each wind turbine is connected to the output terminal of the field control platform, and the output terminal of the clearance detection equipment is connected to the input terminal of the field control platform. The wind turbine control system includes:

[0111] The clearance value determination unit 11 is used to determine the clearance value of the front row of units output by the clearance detection equipment.

[0112] The front-row unit judgment unit 12 is used to judge whether there is a risk to the front-row unit based on the airspace value, and to control the front-row unit to execute the safety strategy corresponding to the judgment result.

[0113] The rear unit judgment unit 13 is used to determine whether the rear unit has an airspace risk based on the absolute wind direction of the front unit's location when the front unit has an airspace risk, and to control the rear unit to execute the safety strategy corresponding to the judgment result.

[0114] As an optional embodiment, it also includes:

[0115] The correction unit is used to correct the clearance value of the front row unit output by the clearance detection device based on a pre-built blade pre-bending model library. The blade pre-bending model library includes the correspondence between the clearance value detected by the clearance detection device and the corrected clearance value.

[0116] As an optional embodiment, it also includes:

[0117] A positional relationship determination unit is used to determine the relative positional relationship between the front row of units and the rear row of units based on the unit locations of the front row of units and the rear row of units;

[0118] The mapping relationship determination unit is used to perform path optimization in a specified sector of the absolute wind direction at the location of the front row units to determine the mapping relationship between the absolute wind direction at the location of the front row units and the rear row units.

[0119] As an optional embodiment, the rear-row unit determination unit 13 includes:

[0120] The rear-row unit judgment subunit is used to determine the absolute wind direction of the location of the front-row unit when there is an airspace risk to the front-row unit, and to determine whether there is a rear-row unit corresponding to the absolute wind direction based on the mapping relationship; if so, the rear-row unit judgment unit is triggered.

[0121] The rear-row unit determination unit is used to determine whether there is an airspace risk for the rear-row unit corresponding to the absolute wind direction.

[0122] As an optional embodiment, the front-row unit determination unit 12 includes:

[0123] The clearance value determination unit is used to determine the relationship between the clearance value, the first clearance threshold, and the second clearance threshold, wherein the second clearance threshold is greater than the first clearance threshold.

[0124] The first control unit is configured to determine that there is no airspace risk for the front-row generator unit if the airspace value is greater than the first airspace threshold, and control the additional pitch angle of the front-row generator unit to be set to 0.

[0125] The second control unit is used to determine that there is a risk to the front row of generators if the airspace value is not greater than the first airspace threshold and is greater than the second airspace threshold, and to control the additional pitch angle of the front row of generators to a preset value.

[0126] The third control unit is used to determine that there is a risk of airspace hazard to the front-row units if the airspace value is not greater than the second airspace threshold, and to control the front-row units to shut down.

[0127] As an optional embodiment, it also includes:

[0128] The wind speed determination unit is used to determine whether the current wind speed of the front unit is greater than the initial wind speed; if so, the clearance value determination unit is triggered.

[0129] As an optional embodiment, it also includes:

[0130] A status bit receiving unit is used to receive the clearance value status bit output by the clearance detection device;

[0131] The status bit judgment unit is used to determine whether the air clearance detection equipment has a fault based on the air clearance value status bit; if so, the air clearance value judgment unit is triggered.

[0132] For an introduction to the control system of a wind turbine provided by the present invention, please refer to the embodiments of the control method of the wind turbine described above. The present invention will not be described again here.

[0133] Please refer to Figure 11 , Figure 11 This is a schematic diagram of the structure of an electronic device provided by the present invention. To solve the above-mentioned technical problems, the present invention also provides an electronic device, comprising:

[0134] Memory 21 is used to store computer programs;

[0135] Processor 22 is used to implement the steps of the control method for wind turbines as described above.

[0136] The processor 22 may include one or more processing cores, such as a quad-core processor or an octa-core processor. The processor 22 may be implemented using at least one hardware form selected from DSP (Digital Signal Processor), FPGA (Field-Programmable Gate Array), and PLA (Programmable Logic Array). The processor 22 may also include a main processor and a coprocessor. The main processor, also known as the central processing unit, is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, the processor 22 may integrate a GPU (graphics processing unit), which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, the processor 22 may also include an AI (Artificial Intelligence) processor, which is used to handle computational operations related to machine learning.

[0137] The memory 21 may include one or more computer-readable storage media, which may be non-transitory. The memory 21 may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In this embodiment, the memory 21 is used to store at least the following computer program, which, after being loaded and executed by the processor 22, is capable of implementing the relevant steps of the wind turbine control method disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 21 may also include an operating system and data, and the storage method may be temporary or permanent storage. The operating system may include Windows, Unix, Linux, etc. The data may include, but is not limited to, data related to the wind turbine control method.

[0138] In some embodiments, the electronic device may further include a display screen, input / output interfaces, communication interfaces, a power supply, and a communication bus.

[0139] It will be understood by those skilled in the art that Figure 11 The structures shown do not constitute a limitation on electronic devices and may include more or fewer components than those shown.

[0140] For an introduction to the electronic device provided by this invention, please refer to the embodiments of the control method for the wind turbine generator described above; the present invention will not be repeated here.

[0141] To address the aforementioned technical problems, the present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the aforementioned wind turbine control method.

[0142] It is understood that if the methods in the above embodiments are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and executes all or part of the steps of the methods described in the various embodiments of this application. Specifically, the computer-readable storage medium may include, but is not limited to, any type of disk, including floppy disks, optical disks, and portable hard drives, or any type of media or device suitable for storing instructions or data, etc., and this application does not make any special limitations here.

[0143] For an introduction to the computer-readable storage medium provided by the present invention, please refer to the embodiments of the control method for wind turbine generators described above; the present invention will not be repeated here.

[0144] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0145] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0146] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control method for a wind turbine generator set, characterized in that, The wind turbines are used in a field control platform. The wind turbines include front-row turbines equipped with air clearance detection equipment and rear-row turbines located in the adjacent area of ​​the front-row turbines. Each wind turbine is connected to the output of the field control platform, and the output of the air clearance detection equipment is connected to the input of the field control platform. The control method for the wind turbine includes: Determine the air clearance value of the front-row unit output by the air clearance detection equipment; Based on the airspace value, determine whether there is an airspace risk for the front-row units, and control the front-row units to execute the safety strategy corresponding to the judgment result; When there is an airspace risk to the front-row units, the system determines whether there is an airspace risk to the rear-row units based on the absolute wind direction of the location of the front-row units, and controls the rear-row units to execute the safety strategy corresponding to the determination result. Before determining whether the front-row generator units have a net air risk based on the net air value, the process also includes: The clearance value of the front-row unit output by the clearance detection equipment is corrected based on a pre-built blade pre-bending model library. The blade pre-bending model library includes the correspondence between the clearance value detected by the clearance detection equipment and the corrected clearance value. Before determining whether there is an airspace risk to the rear units based on the absolute wind direction of the location of the front units, the method further includes: The relative positional relationship between the front row of units and the rear row of units is determined based on the unit locations of the front row of units and the rear row of units. Path optimization is performed in a sector with the absolute wind direction at the location of the front-row units to determine the mapping relationship between the absolute wind direction at the location of the front-row units and the rear-row units.

2. The control method for a wind turbine generator as described in claim 1, characterized in that, When there is an airspace risk to the front-row units, determining whether there is an airspace risk to the rear-row units based on the absolute wind direction at the location of the front-row units includes: When there is an airspace risk to the front-row units, determine the absolute wind direction of the location of the front-row units and determine whether there are rear-row units corresponding to the absolute wind direction based on the mapping relationship; If so, it is determined that there is an airspace risk for the rear units corresponding to the absolute wind direction.

3. The control method for a wind turbine generator as described in any one of claims 1 to 2, characterized in that, The step of determining whether the front-row units have a clearance risk based on the clearance value, and controlling the front-row units to execute the safety strategy corresponding to the determination result, includes: Determine the relationship between the airspace value, the first airspace threshold, and the second airspace threshold, wherein the second airspace threshold is greater than the first airspace threshold; If the airspace value is greater than the first airspace threshold, it is determined that there is no airspace risk for the front-row generator unit, and the additional pitch angle of the front-row generator unit is set to 0. If the airspace value is not greater than the first airspace threshold but greater than the second airspace threshold, it is determined that there is an airspace risk for the front-row generator unit, and the additional pitch angle of the front-row generator unit is controlled to be set to a preset value. If the air clearance value is not greater than the second air clearance threshold, it is determined that there is an air clearance risk for the front-row units, and the front-row units are shut down.

4. The control method for a wind turbine generator as described in claim 3, characterized in that, Before determining the relationship between the net air value, the first net air threshold, and the second net air threshold, the method further includes: Determine whether the current wind speed of the front-row units is greater than the initial wind speed; If so, proceed to the step of determining the magnitude relationship between the net air value, the first net air threshold, and the second net air threshold.

5. The control method for a wind turbine generator as described in claim 4, characterized in that, Before determining the relationship between the net air value, the first net air threshold, and the second net air threshold, the method further includes: Receive the clearance value status bit output by the clearance detection device; Based on the status bit of the air clearance value, determine whether the air clearance detection equipment has a malfunction; If not, proceed to the step of determining the relationship between the net air value, the first net air threshold, and the second net air threshold.

6. A control system for a wind turbine generator, characterized in that, The wind turbines are used in a field control platform. The wind turbines include front-row turbines equipped with air clearance detection equipment and rear-row turbines located in the adjacent area of ​​the front-row turbines. Each wind turbine is connected to the output of the field control platform, and the output of the air clearance detection equipment is connected to the input of the field control platform. The control system of the wind turbine includes: The air clearance value determination unit is used to determine the air clearance value of the front row unit output by the air clearance detection equipment; The front-row unit judgment unit is used to determine whether the front-row unit has a clearance risk based on the clearance value, and to control the front-row unit to execute the safety strategy corresponding to the judgment result. The rear-row unit judgment unit is used to determine whether the rear-row unit has an airspace risk based on the absolute wind direction of the location of the front-row unit when the front-row unit has an airspace risk, and to control the rear-row unit to execute the safety strategy corresponding to the judgment result. The control system of the wind turbine also includes: Before determining whether there is a clearance risk for the front-row units based on the clearance value, the correction unit corrects the clearance value of the front-row units output by the clearance detection equipment based on a pre-built blade pre-bending model library. The blade pre-bending model library includes the correspondence between the clearance value detected by the clearance detection equipment and the corrected clearance value. The positional relationship determination unit is used to determine the relative positional relationship between the front row of units and the rear row of units based on the location of the front row of units and the location of the rear row of units before determining whether there is an airspace risk based on the absolute wind direction of the location of the front row of units. The mapping relationship determination unit is used to perform path optimization in a specified sector of the absolute wind direction at the location of the front row units to determine the mapping relationship between the absolute wind direction at the location of the front row units and the rear row units.

7. An electronic device, characterized in that, include: Memory, used to store computer programs; A processor for implementing the steps of the control method for a wind turbine as described in any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the wind turbine control method as described in any one of claims 1 to 5.

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