Wind power blade icing experiment device and centrifugal deicing control method

Abstract

The invention provides a wind turbine blade icing experiment device and a centrifugal deicing control method, belongs to the technical field of wind turbine generator operation and maintenance, and can at least partially solve the problems that an existing icing experiment device lacks multi-parameter cooperative monitoring and data real-time processing capacity, so that the accuracy and repeatability of an experiment result are insufficient, and the experiment efficiency is low. The control method does not fully consider the blade structure, the ice layer distribution and the coating characteristics, and lacks a real-time data feedback and safety constraint mechanism. And in the process of increasing the rotating speed, strain verification or state grading judgment is not carried out, so that overspeed running of blades, structural damage and even safety risks are easily caused. The system comprises a test bench, a wind turbine generator and a dynamic monitoring system. According to the control method, parameters such as the blade rotating speed, the ice layer thickness and the adhesion strength are measured in real time, the centrifugal force and the adhesion force are calculated, the safety factor and the strain threshold value are introduced for double judgment, and therefore whether the rotating speed is increased or not is determined to achieve deicing.

Description

Technical Field

[0001] The present invention belongs to the technical field of wind turbine operation and maintenance, and in particular relates to a wind turbine blade icing experimental device and a centrifugal deicing control method. Background Art

[0002] With the rapid development of wind power technology, wind power generation is becoming increasingly widespread in cold and high-altitude regions. However, wind turbine blades are extremely susceptible to icing during winter operation. Ice accumulation not only severely reduces the blades' aerodynamic performance and power generation efficiency, but can also cause structural vibration, turbine shutdown, and even safety accidents, hindering the stable operation of wind power systems.

[0003] In existing technologies, research on wind turbine icing issues mainly focuses on the development of deicing materials, control strategy design, and test platform construction. However, at least the following problems still exist: Currently, commonly used icing test platforms rely on closed or semi-closed wind tunnels for environmental simulation, using low-temperature airflow and water mist to create an icing environment. While these devices can replicate the icing process to a certain extent, they suffer from large equipment size, high cost, and inconvenient blade replacement. They also have poor adaptability to different blade lengths, mounting angles, and coating types. Furthermore, most existing devices rely on single sensors or manual observation to detect ice shedding, lacking the ability to coordinate multi-parameter monitoring and real-time data processing, resulting in inaccurate and inreproducible test results.

[0004] Deicing is the process of increasing blade speed, causing the ice layer to overcome its adhesion under centrifugal force and fall off. Existing methods are often based on theoretical calculations and simplified assumptions, insufficiently considering blade shape, ice distribution, and coating properties, and often fail to incorporate real-time monitoring data for dynamic correction. Furthermore, some methods lack safety state assessment and strain threshold constraints during the speed increase process, potentially leading to blade overspeed, mechanical damage, and even accidents. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art and provides a wind turbine blade icing experimental device, comprising a test bench for realizing environmental simulation and data collection, a wind turbine generator set, and a dynamic monitoring system for detecting and displaying the working status of the icing experimental device; The test bench includes a carrying platform, an operating platform and a sensor component for collecting data, and the sensor component includes a rainfall sensor component and an integrated temperature and humidity sensor component; The wind turbine generator set includes a support platform, on which a hub for mounting a blade to be tested is provided, and the hub is transmission-connected to a hub drive device; The dynamic monitoring system includes a visual monitoring component, which includes a high-speed camera. A laser detection component is provided at the lower end of the high-speed camera.

[0006] Optionally, the wheel hub drive device includes a motor installed in a cabin at the upper end of the support platform and an electrical control device electrically connected to the motor.

[0007] Preferably, the electrical control device includes an electrical box, one side of which is equipped with a speed adjustment knob, a stop button, a start button and an emergency stop button. A power supply module and a speed regulation drive module are provided in the electrical box, and the electrical box is electrically connected to the cabin through a wire.

[0008] Preferably, a bearing platform is installed inside the test bench, and the bearing platform includes a first bearing platform for weighing the blade to be tested in the horizontal and tilt directions and a second bearing platform for weighing the blade to be tested in the horizontal, tilt and vertical directions; and an operating platform is installed inside the test bench, and a accommodating groove is provided inside the operating platform, one end of the rainfall sensor assembly is hinged in the accommodating groove, a first screen is installed on one side of the accommodating groove, and a storage hole for placing the integrated temperature and humidity sensor assembly is provided at the upper end of the operating platform.

[0009] Optionally, an integrated storage unit is installed at the lower end of the carrying platform and the operating platform, and a moving component is installed at the lower end of the test bench.

[0010] Optionally, the support platform includes a tower and a bracket, the top of the tower is fixedly connected to the cabin, the two ends of the bracket are respectively fixedly connected to the tower and the base, and the center of the base is fixedly connected to the tower.

[0011] Optionally, the hub is provided with a fastening connection structure for cooperating with the root structure of the blade to be measured.

[0012] Preferably, a second screen is installed on one side of the visual surveillance component, a switch is installed on one side of the visual surveillance component, and a detection system bracket is provided at the lower end of the visual surveillance component, the detection system bracket includes a detection system support rod and three detection system support arms distributed symmetrically at an angle of 120°, and the upper end of the detection system support rod is fixedly connected to the visual surveillance component.

[0013] A centrifugal deicing control method for wind turbine blades, comprising the following steps: Step S101: Initializing the simulated environmental test system, installing the wind turbine blades required for the experiment and starting the turbine, wherein the blades include blank blades and multiple sets of blades with different coatings; Step S102: Starting the multi-parameter environmental simulation chamber, starting environmental simulation, setting parameters, including temperature and rainfall, using the sensor assembly to read the environmental parameters and performing comparison calculations with the set parameters. When the measured environmental parameters meet expectations, an environmental ready signal is output; Step S103: Start the ice shedding monitoring system to fix the detection interval Periodically collect and obtain real-time data, = 10 seconds, and store the data set obtained in each cycle into the buffer area, the data including: The real-time speed is detected and output by the encoder of the main shaft of the ice shedding monitoring system ; Ice thickness detected and output by laser displacement sensor ; The radial distance from the ice layer to the blade root measured by the positioning device ; At even spacing along the length of the blade Divide the detection area, = 0.2 meters, each detection area corresponds to a group , , to support the spatial distribution analysis of centrifugal de-icing conditions; Calculate the centrifugal force of ice in the detection area based on the real-time data obtained by the ice shedding monitoring system , ; in, To detect the centrifugal force of the ice layer in the area, To detect the quality of the regional ice layer, is the angular velocity of the ice layer in the detection area, the angular velocity , is the density of the ice layer, is the area of ​​ice in the detection area, To detect the thickness of ice in the area, is the distance between the ice layer and the leaf root; Calculate the adhesion of the ice layer in the detection area , ; in, is the ice area in the detection area, is the adhesion strength between the coating and ice interface; On the rotating blades, the ice layer must fall off to meet the centrifugal force Greater than the adhesion between ice and coating interface , ,Right now ; in, is the centrifugal force, is the adhesion between the ice and coating interface; Step S104: Determine the safety status by level; define safety factors , ; Step S105: Strain double check, calculate the dynamic strain of the ice layer at the rotation speed , the strain calculation formula is as follows: ; in, is the strain of the ice layer under centrifugal load, is the stress per unit area of ​​the ice layer, is the elastic modulus constant of ice, is the angular velocity corresponding to the de-icing condition; The conditions for ice fracture are > , if satisfied > , then de-icing is achieved at the critical speed, otherwise auxiliary de-icing is performed; in, is the strain of the ice layer under centrifugal load, is the critical strain threshold of ice.

[0014] Preferably, the security status classification judgment in step S104 includes the following steps: Step S201: According to the data of each monitoring point acquired by the dynamic monitoring system in the current cycle, if all the data of the monitoring points meet the safety factor ,and , then maintain the current speed and continue to monitor ice conditions; Furthermore, the When the fan blades maintain the current speed The ice won’t break off; in The ice thickness threshold is pre-calibrated based on predetermined criteria for the current coating type and environmental conditions, including temperature, rainfall and icing intensity, and blade position range; Under the same coating and working conditions, the threshold value is used as a fixed constant within this control and judgment cycle; when the coating type or environmental conditions change, the threshold value must be recalibrated and updated using the same method; The threshold calibration principle is: =1.2 is used as the centrifugal triggering criterion. Under the given misjudgment risk constraint, the supremum of the minimum thickness that can trigger the possibility of ice shedding is taken, which is denoted as ; Step S202: According to the data of each monitoring point acquired by the dynamic monitoring system in the current cycle, if there is a monitoring point data that meets the safety factor , then maintain the current speed , centrifugal force can trigger de-icing events; Step S203: According to the data of each monitoring point acquired by the dynamic monitoring system in the current cycle, if there is a monitoring point data that meets the safety factor ,but , then increase the speed to the critical speed , the critical speed The calculation formula is: ,in =1.2.

[0015] The beneficial effects of a wind turbine blade icing experimental device and a centrifugal deicing control method according to an embodiment of the present invention are as follows: Through the multi-parameter environmental simulation system, the temperature, humidity and rainfall conditions of the experimental environment can be precisely controlled to achieve high realism of the wind turbine blade icing process and improve the reliability of the experimental data.

[0016] Among them, the dynamic monitoring system integrates high-speed cameras, laser ranging and multi-parameter sensors, and combines data processing algorithms to achieve real-time monitoring and accurate judgment of the entire process of icing and deicing.

[0017] In addition, the centrifugal de-icing judgment algorithm is based on the dynamic comparison of the centrifugal force and adhesion force of the ice layer, and introduces a dual verification mechanism of safety factor and strain to effectively avoid misjudgment and missed judgment, and improve the accuracy and repeatability of the experimental results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the overall structure of the experimental device of the present invention; Figure 2 A schematic diagram of the wind turbine structure of the experimental device of the present invention; Figure 3 A schematic diagram of the fixed plate structure of the experimental device of the present invention; Figure 4 A schematic diagram of the blade structure of the experimental device of the present invention; Figure 5 A schematic diagram of the hub structure of the experimental device of the present invention; Figure 6 A schematic diagram of the structure of the electrical control device of the experimental device of the present invention; Figure 7 A schematic diagram of the tower structure of the experimental device of the present invention; Figure 8 A schematic diagram of the detection system support structure of the experimental device of the present invention; Figure 9 A schematic diagram of the structure of the visual monitoring component of the experimental device of the present invention; Figure 10 A schematic diagram of the test bench structure of the experimental device of the present invention; Figure 11 This is a flow chart of the centrifugal deicing control method.

[0019] Among them: 100 test bench; 110 bearing platform; 120 first bearing platform; 130 second bearing platform; 200 operating platform; 210 rain sensor assembly; 213 storage tank; 220 integrated temperature and humidity sensor assembly; 229 storage hole; 230 first screen; 300 integrated storage unit; 400 mobile assembly; 500 wind turbine; 510 support platform; 511 tower; 512 bracket; 513 cabin; 514 wire; 515 base; 520 blade; 521 fixing device; 522 fixed Fixed plate; 523 blade screw hole; 530 wheel hub; 531 wheel hub screw hole; 532 central screw hole; 533 mounting slot; 540 electrical control device; 541 speed adjustment knob; 542 stop button; 543 start button; 544 emergency stop button; 545 electrical box; 600 dynamic monitoring system; 610 visual monitoring component; 611 high-speed camera; 612 switch; 613 laser detection component; 614 second screen; 620 detection system bracket; 621 detection system support rod; 622 detection system support arm. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0021] like Figure 1-10 As shown, the wind turbine blade icing experimental device of the present invention includes a test bench 100 for realizing environmental simulation and data collection, a wind turbine generator set 500, and a dynamic monitoring system 600 for detecting and displaying the working status of the icing experimental device; The test bench 100 includes a carrying platform 110, an operating platform 200, and a sensor component for collecting data. The sensor component includes a rainfall sensor component 210 and an integrated temperature and humidity sensor component 220. The supporting platform 110 further includes a first supporting platform 120 and a second supporting platform 130; the first supporting platform 120 is used to weigh the blade 520 to be tested in the horizontal and inclined directions, and the second supporting platform 130 is used to weigh in the horizontal, inclined and vertical directions, both of which are fixed to the internal frame of the test bench 100 by bolts.

[0022] In addition, a receiving groove 213 is provided inside the operating platform 200, and one end of the rain sensor component 210 is hinged in the receiving groove 213; a first screen 230 is embedded on one side of the receiving groove 213 for displaying the environmental data collected by the rain sensor component 210 and the integrated temperature and humidity sensor component 220 in real time.

[0023] The wind turbine 500 includes a support platform 510, on which a hub 530 is mounted for mounting a blade 520 to be tested. The hub 530 is connected to a hub drive device. The hub 530 is provided with a fastening connection structure for cooperating with the root structure of the blade 520 to be tested. Among them, the root of the blade 520 to be tested is provided with a fixing device 521 for connecting to the hub 530, and the fixing device 521 includes a fixing plate 522 and a blade screw hole 523. The fixing plate 522 is provided with two blade screw holes 523 matching the hub screw hole 531, and the blade screw hole 523 and the hub screw hole 531 are fixed by bolts; the hub 530 includes a hub screw hole 531, a central screw hole 532 and an installation groove 533. The hub 530 includes three installation grooves 533 for connecting to the fixing device 521 at the root of the blade 520, each installation groove 533 includes two hub screw holes 531 matching the blade screw hole 523, and the central screw hole 532 is used to fix the hub 530 to one side of the nacelle 513.

[0024] The support platform 510 includes a vertically arranged tower 511, the top of the tower 511 is connected to the cabin 513, the outer wall of the tower 511 is fixedly connected to the bracket 512, the two ends of the bracket 512 are respectively welded to the tower 511 and the horizontally arranged base 515, and the center of the base 515 is connected to the bottom end of the tower 511 to improve the overall stability.

[0025] The dynamic monitoring system 600 includes a visual monitoring component 610, which includes a high-speed camera 611. A laser detection component 613 is provided at the lower end of the high-speed camera 611; Among them, the high-speed camera 611 is an imaging device used to capture the ice coating status of the blade 520 during its rotation. When the rotation speed of the blade 520 reaches 80-150 r / min and the linear speed of the blade tip is not less than 40 m / s, the high-speed camera 611 can still achieve an acquisition frame rate of not less than 500 frames / second and an image resolution of 1280×720.

[0026] A second screen 614 is embedded in the front of the visual monitoring component 610 for displaying in real time the images captured by the high-speed camera 611 and the ice thickness data measured by the laser detection component 613; a switch 612 is also provided on one side of the visual monitoring component 610 for controlling the power on and off of the visual monitoring component 610.

[0027] In addition, a detection system bracket 620 is provided at the lower end of the visual surveillance component 610, and the detection system bracket 620 includes a detection system support rod 621 and three detection system support arms 622 distributed at an equiangular symmetry of 120°. The three detection system support arms 622 distributed at an equiangular symmetry of 120° are fixedly connected to the outer side of the detection system support rod 621, and the upper end of the detection system support rod 621 is fixedly connected to the visual surveillance component 610 to form a stable support for the visual surveillance component 610.

[0028] like Figure 6 As shown, the electrical control device 540 is arranged outside the cabin 513, and the device includes an electrical box 545. One side of the electrical box 545 is provided with a speed adjustment knob 541, a stop button 542, a start button 543 and an emergency stop button 544 in sequence, which are used to realize the functions of speed adjustment, stopping operation, starting operation and emergency shutdown respectively.

[0029] The electrical box 545 is electrically connected to the drive and control system of the motor in the nacelle 513 via the wire 514 to achieve control and monitoring of the operating status of the wind turbine 500 .

[0030] An integrated storage unit 300 is provided at the lower end of the carrying platform 110 and the operating platform 200 for storing experimental tools, the blades to be tested 520 and spare sensors; a group of mobile components 400 are installed at each of the four corners of the lower end of the test bench 100. The mobile components 400 are universal casters with brakes to achieve the overall movement and positioning of the experimental device.

[0031] The operating steps of the wind turbine blade icing experimental device are as follows: First, place the test bench 100 in a stable and powered work area, unfold the second carrying platform 130, and adjust it to a horizontal position. Depending on the test requirements, the carrying crossbar can be rotated to change the platform angle to meet horizontal or tilted installation conditions.

[0032] The target coating sample is then placed on the weighing plate for initial weighing. For samples that need to be mounted vertically, a lightweight plastic clamp can be used to clamp and secure them, and then hung from the test bench 100 hook position to maintain its installation posture.

[0033] After the sample is installed, pull out the temperature and humidity sensor assembly 220 and rotate the temperature and humidity meter to keep it level with the front telescopic arm. Simultaneously rotate the rain sensor assembly 210 to the working position, ensuring that it is perpendicular to the direction of the supporting crossbar to optimize sampling efficiency.

[0034] Then, the operator operates electrical control device 540, pressing start button 543 to start the equipment, and rotating speed adjustment knob 541 to adjust blade 520 to the set speed. Dynamic monitoring system 600 receives real-time data from test bench 100 on blade 520 rotation speed, ice thickness, ambient temperature and humidity, and rainfall intensity.

[0035] After the test is complete, return the speed adjustment knob 541 to zero and press the stop button 542 to shut down the device. At the same time, retract and lock the second carrying platform 130, completing sample removal and device cleaning. After wiping the surface of the rain gauge with a dry cotton swab, rotate the sensor assembly 210 back into its original position in the receiving slot 213. Finally, retract the temperature and humidity sensor assembly 220 and return it to the storage hole 229 to complete the device reset.

[0036] To facilitate implementation by those skilled in the art, the present invention lists three sets of representative experimental data and determination processes based on the aforementioned apparatus and method S101-S105; like Figure 11 As shown, the ice density used in the experiment is kg / , the detection area is , the ice thickness threshold is m, angular velocity is converted to ; The specific units are: is r / min, is rad / s, force is N, stress and elastic modulus are Pa. Example 1: Under the condition of ambient temperature of about -20°C, the total length of the blade is 1.04 m, and the blade sprayed with super hydrophobic coating is selected. m to carry out the test; the ice thickness is measured in real time m, speed r / min, based on which the angular velocity is calculated rad / s.

[0037] The centrifugal force of ice in the detection area is: ; The adhesion strength between the coating and ice interface was calibrated as Pa; Then the adhesion is: ; From this we can get the safety factor: ; According to the judgment rules of S104 and S202, centrifugal de-icing can be triggered by maintaining the current speed without increasing the speed; this conclusion is consistent with The conditions are the same, but due to It is no less than the trigger threshold and there is no need to enter the critical speed calculation process.

[0038] Example 2: At an ambient temperature of approximately -20°C, the total length of the blade is 1.04 m, and the m test; measured ice thickness m, speed r / min, angular velocity rad / s; Calculation yields: ; ; ; According to S104 and S202, the centrifugal force at the current speed can trigger ice removal without increasing the speed. The contribution of Further increase.

[0039] Example 3: At an ambient temperature of approximately -20°C, the blade has a total length of 1.04 m and uses a coating with higher adhesion strength (calibrated Pa ), in Test at m; actual measurement m, r / min, rad / s; Substituting into the calculation, we get: ;

[0040] ; because ,and , enter the critical speed calculation according to S104 and S203; take the triggering criteria =1.2, by We can get:

[0041] Substituting the data into the equation: ; Further calibrate the strain according to S105 and take the elastic modulus of ice Pa, dynamic strain is: ; because , it is determined that r / min can achieve centrifugal de-icing; if the site is limited and cannot be raised to , then the auxiliary defrosting process can be entered according to the experimental plan.

[0042] The above three embodiments cover two key operating conditions: maintaining the speed to shed ice and increasing the speed to the critical speed to shed ice, which verifies the above three conditions. The core judgment and Double-check the validity of the constraints logic.

[0043] It should be noted that the numerical parameters are used to illustrate the feasibility and implementation path of the present invention, and do not limit the scope of protection of the present invention; without departing from the essence of the present invention, the coating type, threshold setting, sampling interval and spatial sampling spacing, material constants, etc. can be adjusted or calibrated according to the on-site working conditions and equipment capabilities.

[0044] In summary, the embodiments of the present disclosure have at least the following technical effects: Through the multi-parameter environmental simulation system, the temperature, humidity and rainfall conditions of the experimental environment can be precisely controlled to achieve high realism of the wind turbine blade icing process and improve the reliability of the experimental data.

[0045] Among them, the dynamic monitoring system integrates high-speed cameras, laser ranging and multi-parameter sensors, and combines data processing algorithms to achieve real-time monitoring and accurate judgment of the entire process of icing and deicing.

[0046] In addition, the centrifugal de-icing judgment algorithm is based on the dynamic comparison of the centrifugal force and adhesion force of the ice layer, and introduces a dual verification mechanism of safety factor and strain to effectively avoid misjudgment and missed judgment, and improve the accuracy and repeatability of the experimental results.

[0047] It will be understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art will appreciate that various modifications and improvements can be made without departing from the spirit and substance of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A wind turbine blade icing experimental device, characterized in that: It comprises a test bench (100) for realizing environmental simulation and data collection, a wind turbine generator set (500), and a dynamic monitoring system (600) for detecting and displaying the working state of the icing experimental device; The test bench (100) comprises a carrying platform (110), an operating platform (200), and a sensor component for collecting data, wherein the sensor component comprises a rainfall sensor component (210) and an integrated temperature and humidity sensor component (220); The wind turbine generator set (500) comprises a support platform (510), a hub (530) for mounting a blade to be tested (520) is provided on the support platform (510), and the hub (530) is drivingly connected to a hub drive device; The dynamic monitoring system (600) comprises a visual monitoring component (610), wherein the visual monitoring component (610) comprises a high-speed camera (611), and a laser detection component (613) is provided at the lower end of the high-speed camera (611).

2. The ice coating experimental device according to claim 1, characterized in that: The wheel hub drive device comprises a motor installed in a cabin (513) at the upper end of the support platform (510) and an electrical control device (540) electrically connected to the motor.

3. The ice coating experimental device according to claim 2, characterized in that: The electrical control device (540) includes an electrical box (545), one side of which is mounted a speed adjustment knob (541), a stop button (542), a start button (543), and an emergency stop button (544). A power supply module and a speed regulation drive module are provided in the electrical box (545), and the electrical box (545) is electrically connected to the cabin (513) via a wire (514).

4. The ice coating experimental device according to claim 1, characterized in that: The test bench (100) is internally installed with a bearing platform (110), and the bearing platform (110) includes a first bearing platform (120) for weighing the blade (520) to be tested in the horizontal and tilt directions, and a second bearing platform (130) for weighing the blade (520) to be tested in the horizontal, tilt and vertical directions; and the test bench (100) is internally installed with an operating platform (200), and the operating platform (200) is internally provided with a receiving groove (213), one end of the rain sensor assembly (210) is hinged in the receiving groove (213), a first screen (230) is installed on one side of the receiving groove (213), and the upper end of the operating platform (200) is provided with a receiving hole (229) for placing the integrated temperature and humidity sensor assembly (220).

5. The ice coating experimental device according to claim 1, characterized in that: An integrated storage unit (300) is installed at the lower ends of the carrying platform (110) and the operating platform (200), and a moving component (400) is installed at the lower end of the test bench (100).

6. The ice coating experimental device according to claim 1, characterized in that: The supporting platform (510) comprises a tower (511) and a bracket (512), wherein the top of the tower (511) is fixedly connected to the cabin (513), and the two ends of the bracket (512) are respectively fixedly connected to the tower (511) and a base (515), and the center of the base (515) is fixedly connected to the tower (511).

7. The ice coating experimental device according to claim 1, characterized in that: The hub (530) is provided with a fastening connection structure for cooperating with the root structure of the blade to be measured (520).

8. The ice coating experimental device according to claim 1, characterized in that: A second screen (614) is installed on one side of the visual monitoring component (610), a switch (612) is installed on one side of the visual monitoring component (610), and a detection system bracket (620) is provided at the lower end of the visual monitoring component (610). The detection system bracket (620) includes a detection system support rod (621) and three detection system support arms (622) distributed symmetrically at an angle of 120 degrees. The upper end of the detection system support rod (621) is fixedly connected to the visual monitoring component (610).

9. A wind turbine blade centrifugal deicing control method, characterized in that: The centrifugal deicing control method is used in the icing experimental device according to any one of claims 1 to 8, and the steps are as follows: Step S101: Initializing the simulated environmental test system, installing the wind turbine blades required for the experiment and starting the turbine, wherein the blades include blank blades and multiple sets of blades with different coatings; Step S102: Starting the multi-parameter environmental simulation chamber, starting environmental simulation, setting parameters, including temperature and rainfall, using the sensor assembly to read the environmental parameters and performing comparison calculations with the set parameters. When the measured environmental parameters meet expectations, an environmental ready signal is output; Step S103: Start the ice shedding monitoring system to fix the detection interval Periodically collect and obtain real-time data, = 10 seconds, and store the data set obtained in each cycle into the buffer area, the data including: The real-time speed is detected and output by the encoder of the main shaft of the ice shedding monitoring system. ; Ice thickness detected and output by laser displacement sensor ; The radial distance from the ice layer to the blade root measured by the positioning device ; At even spacing along the length of the blade Divide the detection area, = 0.2 meters, each detection area corresponds to a group , , to support the spatial distribution analysis of centrifugal de-icing conditions; Calculate the centrifugal force of ice in the detection area based on the real-time data obtained by the ice shedding monitoring system , ; in, To detect the centrifugal force of the ice layer in the area, To detect the quality of the regional ice layer, is the angular velocity of the ice layer in the detection area, the angular velocity , is the density of the ice layer, is the area of ​​ice in the detection area, To detect the thickness of ice in the area, is the distance between the ice layer and the leaf root; Calculate the adhesion of the ice layer in the detection area , ; in, is the ice area in the detection area, is the adhesion strength between the coating and ice interface; On the rotating blades, the ice layer must fall off to meet the centrifugal force Greater than the adhesion between ice and coating interface , ,Right now ; in, is the centrifugal force, is the adhesion between the ice and coating interface; Step S104: Determine the safety status by level; define safety factors , ; Step S105: Strain double check, calculate the dynamic strain of the ice layer at the rotation speed , the strain calculation formula is as follows: ； in, is the strain of the ice layer under centrifugal load, is the stress per unit area of ​​the ice layer, is the elastic modulus constant of ice, is the angular velocity corresponding to the de-icing condition; The conditions for ice fracture are > , if satisfied > , then de-icing is achieved at the critical speed, otherwise auxiliary de-icing is performed; in, is the strain of the ice layer under centrifugal load, is the critical strain threshold of ice.

10. A wind turbine blade centrifugal deicing control method according to claim 9, characterized in that: The security status classification determination in step S104 includes the following steps: Step S201: According to the data of each monitoring point acquired by the dynamic monitoring system in the current cycle, if all the data of the monitoring points meet the safety factor ,and , then maintain the current speed and continue to monitor ice conditions; Furthermore, the When the fan blades maintain the current speed The ice won’t break off; in The ice thickness threshold is pre-calibrated based on predetermined criteria for the current coating type and environmental conditions, including temperature, rainfall and icing intensity, and blade position range; Under the same coating and working conditions, the threshold value is used as a fixed constant within this control and judgment cycle; when the coating type or environmental conditions change, the threshold value must be recalibrated and updated using the same method; The threshold calibration principle is: =1.2 is used as the centrifugal triggering criterion. Under the given misjudgment risk constraint, the supremum of the minimum thickness that can trigger the possibility of ice shedding is taken, which is denoted as ; Step S202: According to the data of each monitoring point acquired by the dynamic monitoring system in the current cycle, if there is a monitoring point data that meets the safety factor , then maintain the current speed , centrifugal force can trigger de-icing events; Step S203: According to the data of each monitoring point acquired by the dynamic monitoring system in the current cycle, if there is a monitoring point data that meets the safety factor ,but , then increase the speed to the critical speed , the critical speed The calculation formula is: ,in =1.2.

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