Real-time monitoring closed-loop control method and system for protecting tower safety

Abstract

The application provides a real-time monitoring closed-loop control method and system for protecting the safety of a tower drum, the method comprising: collecting vibration and inclination data of the top of the tower drum and inclination data of the bottom of the tower drum in real time; calculating the operation parameters of the tower drum in each cycle according to the collected vibration and inclination data of the top of the tower drum and the inclination data of the bottom of the tower drum; statistically analyzing the operation parameters according to historical operation parameters and work conditions to obtain the maximum value of vibration acceleration peaks of each fan under different work conditions and the boundary value of the inclination parameter of the tower drum; comparing the boundary value of the inclination parameter of the tower drum with a theoretical limit inclination and updating the protection inclination of the fan operation according to the comparison result; checking the real-time obtained operation parameters according to the updated protection inclination of the fan operation, and then controlling the fan operation. The system comprises a sensor unit, a tower drum state data collector, a main controller and a central monitoring system to realize the above method. The application can effectively protect the safety of the tower drum.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, and more specifically, to a real-time monitoring closed-loop control method and system for protecting the safety of wind towers. Background Technology

[0002] In existing tower operation status monitoring and control schemes, only the protection tilt angle and other settings given by the original design data are used. However, as the operating years of the wind turbine accumulate, and due to the potential for significant differences between the original design data and actual operating conditions, this control method becomes unreliable. In other words, the control operation scheme given by the original design data is difficult to be applied to tower operation status monitoring and control in the long term, which poses safety risks and is also prone to causing uneconomical operation. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0004] Therefore, the first aspect of the present invention provides a real-time monitoring closed-loop control method for protecting tower safety.

[0005] A second aspect of the present invention provides a real-time monitoring closed-loop control system for protecting tower safety.

[0006] This invention provides a real-time monitoring closed-loop control method for protecting tower safety, comprising:

[0007] Real-time acquisition of vibration and tilt data at the top of the tower and tilt data at the bottom of the tower;

[0008] Based on the collected vibration and tilt data at the top of the tower and the tilt data at the bottom of the tower, the operating parameters of the tower in each cycle in the first and second directions are calculated, and the calculation results for each cycle are recorded; wherein, the operating parameters include the peak value of vibration acceleration, the effective value of velocity, the peak-to-peak value of displacement, and the real-time tilt value;

[0009] The theoretical limit tilt angle that the tower can withstand is determined based on the ultimate load of each tower design and the tower type selection; where the theoretical limit tilt angle is the theoretical value of the wind turbine operation protection tilt angle calculated based on the design data;

[0010] Based on the recorded historical operating parameters, statistical analysis was conducted according to the operating conditions to obtain the maximum value of the peak vibration acceleration of each wind turbine under different operating conditions, as well as the boundary values ​​of the tower's tilt angle parameters in the first and second directions.

[0011] The boundary values ​​of the inclination parameters of the tower in the first and second directions are compared with the theoretical limit inclination angle, and the inclination angle for wind turbine operation protection is updated based on the comparison results.

[0012] Within each cycle, the real-time acquired operating parameters are verified based on the updated wind turbine operation protection tilt angle, thereby controlling the wind turbine operation.

[0013] The real-time monitoring closed-loop control method for protecting tower safety according to the above-described technical solution of the present invention may also have the following additional technical features:

[0014] In the above technical solution, the first direction is the X direction and the second direction is the Y direction.

[0015] In the above technical solution, the step of statistically analyzing the recorded historical operating parameters according to the operating conditions to obtain the peak vibration acceleration of each wind turbine under different operating conditions and the boundary values ​​of the tower's tilt angle parameters in the first and second directions includes:

[0016] Based on historical data and wind turbine status, clustering was used to calculate the numerical range of peak vibration acceleration, effective velocity, peak displacement, and tilt angle in the first and second directions under normal tower conditions.

[0017] In the above technical solution, the calculation of the peak values ​​of vibration acceleration, effective velocity, peak-to-peak displacement, and tilt angle of the tower under normal conditions in the first and second directions using clustering based on historical data and wind turbine status includes:

[0018] The calculated operating parameters of the tower in each cycle in the first and second directions are defined as historical data.

[0019] The maximum operating parameters for each wind turbine under each operating condition are statistically analyzed in historical data.

[0020] For the same model, the average value of the maximum operating parameters under each working condition is calculated, and the average value is used as the reference value of the operating parameters of the model under any working condition. The reference value of the operating parameters includes at least the maximum value of the peak vibration acceleration, the boundary value of the tower tilt angle parameter in the first direction, and the boundary value of the tower tilt angle parameter in the second direction.

[0021] In the above technical solution, updating the wind turbine operation protection tilt angle based on the comparison results includes:

[0022] If (sina x ) 2 +(sina y ) 2 ≥(sinσ) 2 ;

[0023] but

[0024] Otherwise δ = σ;

[0025] Among them, a x The value of the inclination parameter a in the first direction represents the boundary value of the tower. y σ represents the boundary value of the tower's tilt angle parameter in the second direction; δ represents the theoretical limit tilt angle; and δ represents the wind turbine's operating protection tilt angle.

[0026] In the above technical solution, the step of verifying the real-time acquired operating parameters based on the updated wind turbine operating protection tilt angle, and then controlling the wind turbine operation, includes:

[0027] When (sinβx) 2 +(sinβy) 2 >(sinδ) 2 When Ft > Fg * 0.85, a fan derating alarm is issued;

[0028] Where βx represents the inclination angle parameter of the tower in the first direction acquired in real time, βy represents the inclination angle parameter of the tower in the second direction acquired in real time, Ft represents the peak value of the vibration acceleration acquired in real time, and Fg represents the maximum value of the peak value of the vibration acceleration.

[0029] In the above technical solution, the step of verifying the real-time acquired operating parameters based on the updated wind turbine operating protection tilt angle, and then controlling the wind turbine operation, further includes:

[0030] When (sinβx) 2 +(sinβy) 2 ≥(sinσ) 2 Furthermore, when Ft >= Fg * 0.85, a fan shutdown alarm is issued.

[0031] This invention provides a real-time monitoring closed-loop control system for protecting tower safety, applied to the real-time monitoring closed-loop control method for protecting tower safety as described in any of the above technical solutions. The system includes:

[0032] The sensor unit is used to detect and collect vibration and tilt data at the top of the tower and tilt data at the bottom of the tower.

[0033] The tower status data acquisition unit is connected to the sensor unit and is used to calculate the tower's operating parameters in each cycle in the first and second directions based on the collected vibration and tilt data at the top of the tower and the tilt data at the bottom of the tower.

[0034] The main controller is connected to the tower status data acquisition unit to obtain the tower's operating parameters in each cycle in the first and second directions.

[0035] The central monitoring system is connected to the main controller to obtain historical operating parameters. Based on the historical operating parameters and the wind turbine status, it uses clustering to calculate the numerical range of the tower's operating parameters in the first and second directions under normal conditions, and uses this numerical range as the threshold reference value for the main controller's protection control.

[0036] The main controller is also connected to the wind turbine control system to control the wind turbine's operating status based on real-time acquired operating parameters and protection control threshold reference values.

[0037] In the above technical solution, the main controller and the tower status data acquisition unit use RS485 or ModbusTCP protocol for data transmission.

[0038] In the above technical solution, the sensor unit includes:

[0039] A vibration acceleration sensor is installed at the top of the tower to collect vibration acceleration data at the top of the tower in real time.

[0040] The first tilt sensor is installed at the top of the tower to collect the tilt angle data of the top of the tower in real time;

[0041] The second tilt sensor is installed at the bottom of the tower to collect tilt data of the bottom of the tower in real time.

[0042] In summary, due to the adoption of the above-mentioned technical features, the beneficial effects of the present invention are:

[0043] This invention employs a closed-loop control approach, performing cluster analysis on historical data acquired through real-time monitoring. Under actual operating conditions, it obtains boundary values ​​for tower operating parameters, thereby adjusting parameters such as the protection tilt angle involved in the tower operating status monitoring and control scheme. The adjusted parameters serve as new threshold reference values ​​for protection control. When real-time monitoring data fails to meet the threshold reference value requirements, the control logic executes derating or even shutdown protection operations on the wind turbine, avoiding unreliability caused by over-reliance on original design data. This approach meets actual operating requirements, is applicable to any operating condition, and effectively improves the safety and reliability of unit operation.

[0044] Additional aspects and advantages of the invention will become apparent in the following description or may be learned by practice of the invention. Attached Figure Description

[0045] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0046] Figure 1 This is a flowchart of a real-time monitoring closed-loop control method for protecting tower safety according to an embodiment of the present invention. Detailed Implementation

[0047] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0048] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0049] The following reference Figure 1 This invention describes a real-time monitoring closed-loop control method and system for protecting tower safety, provided by some embodiments of the present invention.

[0050] Some embodiments of this application provide a real-time monitoring closed-loop control method for protecting tower safety.

[0051] like Figure 1 As shown, the first embodiment of the present invention proposes a real-time monitoring closed-loop control method for protecting tower safety, including the following steps.

[0052] S1. Real-time acquisition of vibration and tilt data at the top of the tower and tilt data at the bottom of the tower;

[0053] S2. Based on the vibration and tilt data of the tower top and the tilt data of the tower bottom collected in S1, the operating parameters of the tower in each cycle in the first and second directions are calculated, and the calculation results for each cycle are recorded. The operating parameters include peak vibration acceleration, effective velocity, peak-to-peak displacement, and real-time tilt angle. It should be noted that the method for calculating the peak vibration acceleration, effective velocity, peak-to-peak displacement, and real-time tilt angle based on the vibration and tilt data of the tower top and the tilt data of the tower bottom is well-known to those skilled in the art, and the specific calculation method does not need to be described in detail in this disclosure. It is understood that other methods can also be used to obtain the peak vibration acceleration, effective velocity, peak-to-peak displacement, and real-time tilt angle of the tower in any direction in real time. The focus of this embodiment is on obtaining the operating parameters of the wind turbine in real time.

[0054] S3. Determine the theoretical limit tilt angle that each tower can withstand based on its design ultimate load and tower type selection. The theoretical limit tilt angle is the theoretical value of the wind turbine's operational protection tilt angle calculated from the design data. Specifically, the theoretical limit tilt angle can also be directly given from the original design data. The theoretical limit tilt angle can be understood as the maximum tilt angle that the tower can withstand during operation, as given in the design phase. However, in reality, this tilt angle may be designed too large. With increasing operating years, a significant difference between the actual tower tilt angle and the aforementioned theoretical limit tilt angle may lead to safety accidents. Alternatively, if the theoretical limit tilt angle is designed too small, the actual tower can reach a larger tilt range. Setting up a tower operation status monitoring and control scheme based on the theoretical limit tilt angle may result in uneconomical operation.

[0055] S4. Based on the recorded historical operating parameters, perform statistical analysis according to the operating conditions to obtain the maximum value of the vibration acceleration peak of each wind turbine under different operating conditions and the boundary values ​​of the tower tilt angle parameters in the first and second directions; where, the historical operating parameters refer to all or part of the tower operating parameters in each cycle in the first and second directions obtained through steps S1-S2 before the current cycle.

[0056] S5. Compare the boundary values ​​of the tower's tilt angle parameters in the first and second directions obtained in S4 with the theoretical limit tilt angle, and update the wind turbine operation protection tilt angle based on the comparison results. The wind turbine operation protection tilt angle is a reference value for tower operation control, and this reference value should be adjusted according to actual operating conditions and factors (such as the number of years of operation) to flexibly respond to different operating conditions. In this step, guided by historical operating parameters, the wind turbine operation protection tilt angle is adjusted to conform to actual operating conditions.

[0057] S6. In each cycle, the real-time acquired operating parameters are verified based on the updated wind turbine operation protection tilt angle, thereby controlling the wind turbine operation.

[0058] It is understandable that the steps S1-S6 above are not in a fixed order. The order can be flexibly adjusted according to the actual operation, and different steps can be executed at the same time.

[0059] In some embodiments, the first direction is the X direction, and the second direction is the Y direction. It is understood that directly measuring the peak value of vibration acceleration, effective value of velocity, peak-to-peak value of displacement, and real-time vibration amplitude of the tower in a single direction is quite difficult. Measuring from two directions and then performing vector synthesis is a more readily available method. Specifically, the X and Y directions are the horizontal and vertical directions in a Cartesian coordinate system established with the tower as the origin, meaning the X and Y directions are located in the same horizontal plane and are perpendicular to each other. Further, the positive direction of the X direction can be defined as due east, and correspondingly, the positive direction of the Y direction is due north. It should be noted that in other embodiments, the first and second directions do not necessarily have to be perpendicular, but when the first direction is the X direction and the second direction is the Y direction, calculations can be simplified.

[0060] In one embodiment, the step of statistically analyzing recorded historical operating parameters according to operating conditions to obtain the peak vibration acceleration of each wind turbine under different operating conditions and the boundary values ​​of the tower's tilt angle parameters in the first and second directions includes:

[0061] Based on historical data and wind turbine status, clustering was used to calculate the numerical range of peak vibration acceleration, effective velocity, peak displacement, and tilt angle in the first and second directions under normal tower conditions.

[0062] Specifically, the calculation of the peak values ​​of vibration acceleration, effective velocity, peak-to-peak displacement, and tilt angle of the tower under normal conditions in the first and second directions using clustering based on historical data and wind turbine status includes:

[0063] The calculated operating parameters of the tower in each cycle in the first and second directions are defined as historical data.

[0064] The maximum operating parameters for each wind turbine under each operating condition are statistically analyzed in historical data.

[0065] For the same model, the average value of the maximum operating parameters under each working condition is calculated, and the average value is used as the reference value of the operating parameters of the model under any working condition. The reference value of the operating parameters includes at least the maximum value of the peak vibration acceleration, the boundary value of the tower tilt angle parameter in the first direction, and the boundary value of the tower tilt angle parameter in the second direction.

[0066] In one embodiment, updating the wind turbine operating protection tilt angle based on the comparison results includes:

[0067] If (sina x ) 2 +(sina y ) 2 ≥(sinσ) 2 ;

[0068] but

[0069] Otherwise δ = σ;

[0070] Among them, a x The value of the inclination parameter a in the first direction represents the boundary value of the tower. y σ represents the boundary value of the tower's tilt angle parameter in the second direction; δ represents the theoretical limit tilt angle; and δ represents the wind turbine's operating protection tilt angle.

[0071] In the above technical solution, the step of verifying the real-time acquired operating parameters based on the updated wind turbine operating protection tilt angle, and then controlling the wind turbine operation, includes:

[0072] When (sinβx) 2 +(sinβy) 2 >(sinδ) 2 When Ft > Fg * 0.85 and Ft > Fg * 0.85, a fan derating alarm is issued. The fan derating alarm indicates that under the current operating conditions, the fan needs to be drated, that is, the tower tilt angle is alleviated by reducing the load.

[0073] Where βx represents the tilt angle parameter of the tower in the first direction acquired in real time, βy represents the tilt angle parameter of the tower in the second direction acquired in real time, Ft represents the peak value of the vibration acceleration acquired in real time, and Fg represents the maximum value of the peak value of the vibration acceleration.

[0074] When (sinβx) 2 +(sinβy) 2 ≥(sinδ) 2 Furthermore, when Ft>=Fg*0.85, a fan shutdown alarm is issued. The fan shutdown alarm indicates that shutdown control is required under the current operating conditions to prevent the fan from having a safety accident through shutdown protection.

[0075] Other embodiments of the present invention provide a real-time monitoring closed-loop control system for protecting tower safety, applied to the real-time monitoring closed-loop control method for protecting tower safety as described in any of the above embodiments. The system includes a sensor unit, a tower status data acquisition unit, a main controller, and a central monitoring system.

[0076] The sensor unit is used to detect and collect vibration and tilt data at the top of the tower and tilt data at the bottom of the tower. Specifically, the sensor unit includes: a vibration acceleration sensor, a first tilt sensor, and a second tilt sensor. The vibration acceleration sensor is installed at the top of the tower to collect vibration acceleration data at the top of the tower in real time; the first tilt sensor is installed at the top of the tower to collect tilt data at the top of the tower in real time; and the second tilt sensor is installed at the bottom of the tower to collect tilt data at the bottom of the tower in real time.

[0077] The tower status data acquisition unit is connected to the sensor unit and is used to calculate the tower's operating parameters in each cycle in the first and second directions based on the collected vibration and tilt data at the top of the tower and the tilt data at the bottom of the tower.

[0078] The main controller is connected to the tower status data acquisition unit to obtain the tower's operating parameters in each cycle in the first and second directions.

[0079] The central monitoring system is connected to the main controller to obtain historical operating parameters. Based on the historical operating parameters and the wind turbine status, the system uses clustering to calculate the numerical range of the tower's operating parameters in the first and second directions under normal conditions. This numerical range is then used as the threshold reference value for the main controller's protection control.

[0080] The main controller is also connected to the wind turbine control system to control the wind turbine's operating status based on real-time acquired operating parameters and protection control threshold reference values.

[0081] In one specific embodiment, the operation mode of the real-time monitoring closed-loop control system for protecting tower safety is as follows:

[0082] Vibration acceleration sensors and a first tilt sensor installed at the top of the wind turbine tower are used to collect vibration and tilt data at the top of the tower in real time, while a second tilt sensor installed at the bottom of the tower is used to collect tilt data at the bottom of the tower in real time. A tower status data acquisition unit (ASU) collects sensor data at high speed and calculates the peak vibration acceleration, effective velocity, peak-to-peak displacement, and maximum vibration frequency within each cycle T. The ASU transmits the calculation results to an external interface every T cycles. Specifically, the ASU uses the collected vibration and tilt data from the top and bottom of the tower to send the real-time tilt angle and vibration amplitude of the tower to the external interface every 100 milliseconds.

[0083] The main controller uses protocols such as RS485 or Modbus TCP to acquire data uploaded by the tower status data acquisition unit at regular intervals. For example, the protocol might acquire all data provided by the acquisition unit at a 100ms interval. The main controller performs vector synthesis on the acquired data from the tower top in the X and Y directions to obtain the peak value of vibration acceleration, RMS value of velocity, peak-to-peak value of displacement, and real-time vibration amplitude in a specific direction. The main controller makes all tower status-related data available to the central monitoring system and refreshes the data at a interval of less than 500ms.

[0084] The central monitoring system collects all tower status-related data from the main controller every 500ms. Based on historical operating parameter data and turbine status, clustering is used to calculate the range of peak vibration acceleration, effective velocity, peak-to-peak displacement, dominant vibration frequency at the tower top, and tilt angle in the X and Y directions under normal conditions. These values ​​serve as threshold references for the main controller's protection and control. Real-time operating parameters are then assessed based on this range. If real-time operating parameters exceed a certain range, the turbine operates at reduced capacity; if they exceed a higher level, the turbine initiates shutdown protection.

[0085] In this specification, the illustrative expressions of the terms used do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0086] Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention shall be included within the scope of protection of this invention.

Claims

1. A real-time monitoring closed-loop control method for protecting tower safety, characterized in that, include: Real-time acquisition of vibration and tilt data at the top of the tower and tilt data at the bottom of the tower; Based on the collected vibration and tilt data at the top of the tower and the tilt data at the bottom of the tower, the operating parameters of the tower in each cycle in the first and second directions are calculated, and the calculation results for each cycle are recorded; wherein, the operating parameters include the peak value of vibration acceleration, the effective value of velocity, the peak-to-peak value of displacement, and the real-time tilt value; The theoretical limit tilt angle that the tower can withstand is determined based on the ultimate load of each tower design and the tower type selection; where the theoretical limit tilt angle is the theoretical value of the wind turbine operation protection tilt angle calculated based on the design data; Based on the recorded historical operating parameters, statistical analysis was conducted according to the operating conditions to obtain the maximum value of the peak vibration acceleration of each wind turbine under different operating conditions, as well as the boundary values ​​of the tower's tilt angle parameters in the first and second directions. The boundary values ​​of the inclination parameters of the tower in the first and second directions are compared with the theoretical limit inclination angle, and the inclination angle for wind turbine operation protection is updated based on the comparison results. Within each cycle, the real-time acquired operating parameters are verified based on the updated wind turbine operation protection tilt angle, thereby controlling the wind turbine operation.

2. The real-time monitoring closed-loop control method for protecting tower safety according to claim 1, characterized in that, The first direction is the X direction, and the second direction is the Y direction.

3. The real-time monitoring closed-loop control method for protecting tower safety according to claim 1, characterized in that, The process involves statistical analysis based on recorded historical operating parameters, according to operating conditions, to obtain the maximum value of the peak vibration acceleration for each wind turbine under different operating conditions, as well as the boundary values ​​of the tower's tilt angle parameters in the first and second directions, including: Based on historical data and wind turbine status, clustering was used to calculate the numerical range of peak vibration acceleration, effective velocity, peak displacement, and tilt angle in the first and second directions under normal tower conditions.

4. The real-time monitoring closed-loop control method for protecting tower safety according to claim 3, characterized in that, The calculation of the peak values ​​of vibration acceleration, effective velocity, peak-to-peak displacement, and tilt angle of the tower under normal conditions in the first and second directions using clustering based on historical data and wind turbine status includes: The calculated operating parameters of the tower in each cycle in the first and second directions are defined as historical data. The maximum operating parameters for each wind turbine under each operating condition are statistically analyzed in historical data. For the same model, the average value of the maximum operating parameters under each working condition is calculated, and the average value is used as the reference value of the operating parameters of the model under any working condition. The reference value of the operating parameters includes at least the maximum value of the peak vibration acceleration, the boundary value of the tower tilt angle parameter in the first direction, and the boundary value of the tower tilt angle parameter in the second direction.

5. The real-time monitoring closed-loop control method for protecting tower safety according to claim 4, characterized in that, The step of updating the wind turbine operation protection tilt angle based on the comparison results includes: if (sin a x ) 2 +(sin a y ) 2 ≥(sin σ) 2 ; but Otherwise δ = σ; Among them, a x The value of the inclination parameter a in the first direction represents the boundary value of the tower. y σ represents the boundary value of the tower's tilt angle parameter in the second direction; δ represents the theoretical limit tilt angle; and δ represents the wind turbine's operating protection tilt angle.

6. The real-time monitoring closed-loop control method for protecting tower safety according to claim 5, characterized in that, The step of verifying the real-time acquired operating parameters based on the updated wind turbine operating protection tilt angle, and then controlling the wind turbine operation, includes: When (sinβx) 2 +(sinβy) 2 >(sinδ) 2 When Ft > Fg * 0.85, a fan derating alarm is issued; Where βx represents the inclination angle parameter of the tower in the first direction acquired in real time, βy represents the inclination angle parameter of the tower in the second direction acquired in real time, Ft represents the peak value of the vibration acceleration acquired in real time, and Fg represents the maximum value of the peak value of the vibration acceleration.

7. The real-time monitoring closed-loop control method for protecting tower safety according to claim 6, characterized in that, The step of verifying the real-time acquired operating parameters based on the updated wind turbine operating protection tilt angle, and then controlling the wind turbine operation, also includes: When (sinβx) 2 +(sinβy) 2 ≥(sinδ) 2 Furthermore, when Ft >= Fg * 0.85, a fan shutdown alarm is issued.

8. A real-time monitoring closed-loop control system for protecting tower safety, characterized in that, The real-time monitoring closed-loop control method for protecting tower safety as described in any one of claims 1 to 7, the system comprising: The sensor unit is used to detect and collect vibration and tilt data at the top of the tower and tilt data at the bottom of the tower. The tower status data acquisition unit is connected to the sensor unit and is used to calculate the tower's operating parameters in each cycle in the first and second directions based on the collected vibration and tilt data at the top of the tower and the tilt data at the bottom of the tower. The main controller is connected to the tower status data acquisition unit to obtain the tower's operating parameters in each cycle in the first and second directions. The central monitoring system is connected to the main controller to obtain historical operating parameters. Based on the historical operating parameters and the wind turbine status, it uses clustering to calculate the numerical range of the tower's operating parameters in the first and second directions under normal conditions, and uses this numerical range as the threshold reference value for the main controller's protection control. The main controller is also connected to the wind turbine control system to control the wind turbine's operating status based on real-time acquired operating parameters and protection control threshold reference values.

9. The real-time monitoring closed-loop control system for protecting tower safety according to claim 8, characterized in that, The main controller and the tower status data acquisition unit use RS485 or Modbus TCP protocol for data transmission.

10. The real-time monitoring closed-loop control system for protecting tower safety according to claim 8, characterized in that, The sensor unit includes: A vibration acceleration sensor is installed at the top of the tower to collect vibration acceleration data at the top of the tower in real time. The first tilt sensor is installed at the top of the tower to collect the tilt angle data of the top of the tower in real time; The second tilt sensor is installed at the bottom of the tower to collect tilt data of the bottom of the tower in real time.

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