A method, device, equipment and storage medium for suppressing resonance of a wind power tower

Abstract

The present application discloses a method, device, equipment and storage medium for suppressing resonance of a wind turbine tower, and relates to the technical field of wind turbine vibration control, including: in a target wind turbine, determining the target frequency band energy ratio based on three-axis acceleration; determining initial disturbance parameters, and using the current average wind speed, the current impeller speed and the target frequency band energy ratio to determine whether to use the disturbance mode as the operation mode of the wind turbine tower; when the disturbance mode has been used as the operation mode, disturbing the wind turbine tower based on the initial disturbance parameters; during the disturbance process, adjusting the initial disturbance amplitude and the initial disturbance frequency; determining the target impeller speed instruction based on the adjusted target disturbance amplitude, target disturbance frequency, disturbance phase and the current grid angular frequency, and using the target impeller speed instruction to suppress the resonance phenomenon. Therefore, the present application can improve the resonance suppression effect of the wind turbine tower.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine generator vibration control, and in particular to a method, device, equipment and storage medium for suppressing resonance of a wind power tower. Background Art

[0002] As the wind power industry develops towards large capacity and tall towers, steel towers and hybrid towers have become the mainstream tower types due to their economy and high adaptability. However, this type of tower may cause resonance and threaten the safe operation of the unit.

[0003] Existing resonance suppression technologies have exposed multiple limitations in practical applications. For example, traditional passive damping technology relies on fixed parameters, making it difficult to adapt to natural frequency drift caused by uneven tower stiffness, and its effectiveness in suppressing low-frequency resonances of 0.1-1 Hz is poor. Active control solutions, such as active mass dampers, require additional precision sensors, complex mechanisms, and independent energy sources, resulting in high retrofit costs and poor compatibility with existing units. Strategies based on variable pitch or speed control are limited by a single adjustment dimension. For example, pitch angle adjustment can easily cause power fluctuations, and fixed speed disturbances cannot track vibration phase and energy distribution in real time.

[0004] Therefore, how to improve the resonance suppression effect of wind turbine towers is a technical problem that needs to be solved urgently. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a method, device, equipment and storage medium for suppressing the resonance of a wind turbine tower, which can improve the resonance suppression effect of the wind turbine tower. The specific solution is as follows:

[0006] In a first aspect, the present application provides a method for suppressing resonance of a wind turbine tower, comprising:

[0007] In a target wind turbine generator set, determining a current average wind speed, a three-axis acceleration of a wind tower, and a current rotor speed of the target wind turbine generator set, and determining a target frequency band energy proportion based on the three-axis acceleration;

[0008] Determining an initial disturbance amplitude, an initial disturbance frequency, and a disturbance phase to determine corresponding initial disturbance parameters, and using the current average wind speed, the current impeller speed, and the target frequency band energy ratio to determine whether to use a disturbance mode as an operating mode of the wind turbine tower; the disturbance mode is a mode for suppressing resonance of the wind turbine tower;

[0009] When the disturbance mode is used as the operation mode, the wind turbine tower is disturbed based on the initial disturbance parameter;

[0010] During the disturbance process, the initial disturbance amplitude is adjusted using the dynamic gain related to the current average wind speed and the three-axis acceleration, and the initial disturbance frequency is adjusted using the frequency offset of the tower of the wind turbine tower to obtain corresponding target disturbance amplitude and target disturbance frequency;

[0011] A target impeller speed instruction is determined based on the target disturbance amplitude, the target disturbance frequency, the disturbance phase, and the current grid angular frequency, and the resonance phenomenon of the wind turbine tower is suppressed by using the target impeller speed instruction.

[0012] Optionally, determining the current average wind speed, the three-axis acceleration of the wind tower, and the current rotor speed of the target wind turbine generator set, and determining the target frequency band energy proportion based on the three-axis acceleration includes:

[0013] Obtaining wind speed data within a first preset time period using a preset ultrasonic anemometer located on top of a nacelle of a wind turbine tower, and determining a current average wind speed based on the first preset time period and the wind speed data;

[0014] Using a preset three-axis accelerometer located at the top of the wind turbine tower to collect a first acceleration, a second acceleration, and a third acceleration in a preset three-dimensional coordinate system to determine a corresponding three-axis acceleration; wherein the first acceleration, the second acceleration, and the third acceleration respectively represent accelerations in three dimensions in the preset three-dimensional coordinate system;

[0015] Measuring the current rotor speed of the target wind turbine generator set using a preset encoder to complete a speed acquisition operation;

[0016] Determining square values of the three-axis accelerations, accumulating the square values, and performing a preset square root operation on the accumulated results to determine a corresponding first synthetic acceleration vector;

[0017] A frequency spectrum analysis is performed on the first synthesized acceleration vector, frequency band energy within a target frequency band is determined based on an obtained analysis result, and a target frequency band energy ratio is determined using the frequency band energy within the target frequency band and the analysis result.

[0018] Optionally, determining the initial disturbance amplitude, the initial disturbance frequency, and the disturbance phase to determine corresponding initial disturbance parameters includes:

[0019] Randomly selecting an amplitude from a preset amplitude set as a current amplitude, and determining an initial disturbance amplitude based on the current amplitude and a current grid angular frequency;

[0020] Randomly selecting a frequency difference from a preset frequency difference set as a current frequency difference, and determining an initial disturbance frequency based on the current frequency difference and a first-order natural frequency of the tower of the wind turbine tower;

[0021] Determining a current tower top vibration phase of the wind turbine tower based on a fast Fourier transform algorithm, and determining a disturbance phase based on the current tower top vibration phase and a first preset constant value;

[0022] An initial disturbance parameter is determined based on the initial disturbance amplitude, the initial disturbance frequency, and the disturbance phase.

[0023] Optionally, the adjusting the initial disturbance amplitude using the dynamic gain related to the current average wind speed and the three-axis acceleration, and adjusting the initial disturbance frequency using the frequency offset of the tower of the wind turbine tower to obtain corresponding target disturbance amplitude and target disturbance frequency, includes:

[0024] determining a first dynamic gain based on a second preset constant value and a current average wind speed, and determining a second dynamic gain based on a third preset constant value and the three-axis acceleration;

[0025] Adjusting the initial disturbance amplitude using the first dynamic gain, the second dynamic gain, and a preset dynamic gain weight ratio to obtain a corresponding target disturbance amplitude;

[0026] A frequency offset of the tower of the wind turbine tower is determined, and if the frequency offset is greater than a preset offset threshold, the initial disturbance frequency is adjusted based on the first-order natural frequency and the frequency offset to obtain a corresponding target disturbance frequency.

[0027] Optionally, after suppressing the resonance phenomenon of the wind turbine tower by using the target impeller speed instruction, the method further includes:

[0028] determining a second synthetic acceleration vector when the operation mode of the wind turbine tower is the disturbance mode, and determining a vibration suppression rate using the first synthetic acceleration vector and the second synthetic acceleration vector;

[0029] determining a rated power and an output power of the target wind turbine generator set, and determining a maximum output power and a minimum output power within a second preset time period from the output power, so as to determine a power fluctuation rate using the rated power, the maximum output power, and the minimum output power;

[0030] If the vibration suppression rate is less than a first preset suppression rate threshold and the power fluctuation rate is less than a first preset fluctuation rate threshold, adjusting the target disturbance amplitude accordingly based on a preset amplitude magnification factor;

[0031] If the vibration suppression rate is greater than a second preset suppression rate threshold and the power fluctuation rate is greater than a second preset fluctuation rate threshold, the target disturbance amplitude is adjusted accordingly based on a preset amplitude reduction factor.

[0032] Optionally, the determining whether to use the disturbance mode as the operation mode of the wind turbine tower by using the current average wind speed, the current impeller speed, and the target frequency band energy ratio includes:

[0033] Determine whether the current average wind speed is less than a preset wind speed threshold, whether the current impeller speed is within a preset speed range, and whether the target frequency band energy ratio is greater than a preset energy threshold, and obtain respective judgment results;

[0034] If all the judgment results indicate yes, the disturbance mode is used as the operation mode of the wind turbine tower.

[0035] Optionally, the suppressing the resonance phenomenon of the wind turbine tower by using the target impeller speed instruction includes:

[0036] Determining a target torque based on the target impeller speed command and the current average wind speed by a preset PID controller, and suppressing the resonance of the wind turbine tower based on the target torque;

[0037] determining a target desired impeller speed corresponding to the target impeller speed command, and determining a speed error based on the target desired impeller speed and the current impeller speed;

[0038] When the rotation speed error is greater than a preset error threshold, a target pitch angle is determined based on the initial disturbance frequency, the disturbance phase and a preset pitch angle calculation formula, so as to adjust the current pitch angle of the wind turbine tower using the target pitch angle.

[0039] In a second aspect, the present application provides a resonance suppression device for a wind turbine tower, comprising:

[0040] an information determination module, configured to determine, in a target wind turbine generator set, the current average wind speed, the three-axis acceleration of the wind tower, and the current rotor speed of the target wind turbine generator set, and determine the target frequency band energy proportion based on the three-axis acceleration;

[0041] a mode decision module, configured to determine an initial disturbance amplitude, an initial disturbance frequency, and a disturbance phase to determine corresponding initial disturbance parameters, and to use the current average wind speed, the current impeller speed, and the target frequency band energy ratio to determine whether to use the disturbance mode as the operating mode of the wind turbine tower; the disturbance mode is a mode for suppressing resonance of the wind turbine tower;

[0042] a tower disturbance module, configured to, when the disturbance mode is used as the operation mode, disturb the wind turbine tower based on the initial disturbance parameter;

[0043] an information adjustment module, configured to adjust the initial disturbance amplitude by using the dynamic gain of the current average wind speed and the three-axis acceleration, and to adjust the initial disturbance frequency by using the frequency offset of the tower of the wind turbine tower, so as to obtain corresponding target disturbance amplitude and target disturbance frequency;

[0044] The resonance suppression module is used to determine a target impeller speed instruction based on the target disturbance amplitude, the target disturbance frequency, the disturbance phase and the current grid angular frequency, and to suppress the resonance phenomenon of the wind turbine tower by using the target impeller speed instruction.

[0045] In a third aspect, the present application provides an electronic device, comprising:

[0046] Memory, used to store computer programs;

[0047] The processor is configured to execute the computer program to implement the aforementioned method for suppressing resonance of a wind turbine tower.

[0048] In a fourth aspect, the present application provides a computer-readable storage medium for storing a computer program; wherein, when the computer program is executed by a processor, the aforementioned method for suppressing resonance of a wind turbine tower is implemented.

[0049] In the present application, in the target wind turbine generator set, the current average wind speed, the three-axis acceleration of the wind turbine tower and the current rotor speed of the target wind turbine generator set are determined, and the target frequency band energy ratio is determined based on the three-axis acceleration; the initial disturbance amplitude, the initial disturbance frequency and the disturbance phase are determined to determine the corresponding initial disturbance parameters, and the current average wind speed, the current rotor speed and the target frequency band energy ratio are used to determine whether to use the disturbance mode as the operating mode of the wind turbine tower; the disturbance mode is a mode for suppressing the resonance phenomenon of the wind turbine tower; when the disturbance mode has been used as In the operating mode, the wind turbine tower is disturbed based on the initial disturbance parameters. During the disturbance process, the initial disturbance amplitude is adjusted using the dynamic gain of the current average wind speed and the three-axis acceleration, and the initial disturbance frequency is adjusted using the frequency offset of the tower of the wind turbine tower to obtain the corresponding target disturbance amplitude and target disturbance frequency. The target impeller speed instruction is determined based on the target disturbance amplitude, the target disturbance frequency, the disturbance phase, and the current grid angular frequency, and the resonance phenomenon of the wind turbine tower is suppressed using the target impeller speed instruction. As can be seen from the above, during the operation of the target wind turbine generator set, the current average wind speed, the three-axis acceleration of the wind turbine tower, and the current impeller speed of the target wind turbine generator set must be obtained first. Subsequently, the energy proportion of the target frequency band is calculated based on the three-axis acceleration. Next, the initial disturbance amplitude, initial disturbance frequency, and disturbance phase are determined. These parameters together constitute the initial disturbance parameters. Then, the current average wind speed, the current impeller speed and the target frequency band energy ratio are combined to determine whether the disturbance mode should be set as the operating mode of the wind tower. If it is determined that the disturbance mode is to be used as the operating mode of the wind tower, the wind tower is disturbed according to the initial disturbance parameters. During this disturbance process, the initial disturbance amplitude should be adjusted according to the dynamic gain corresponding to the current average wind speed and the three-axis acceleration; at the same time, the frequency offset of the wind tower is used to adjust the initial disturbance frequency, and then the target disturbance amplitude and target disturbance frequency are obtained. Finally, the target impeller speed instruction is determined according to the target disturbance amplitude, target disturbance frequency, disturbance phase and the current grid angular frequency, and the resonance phenomenon of the wind tower is suppressed by this instruction. In this way, the present application can improve the resonance suppression effect of the wind tower, thereby ensuring the safe and stable operation of the wind turbine generator set under complex working conditions to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0051] Figure 1 This is a flow chart of a method for suppressing resonance of a wind turbine tower disclosed in this application;

[0052] Figure 2 This is a flow chart of a specific method for suppressing resonance of a wind turbine tower disclosed in this application;

[0053] Figure 3 This is a schematic structural diagram of a resonance suppression device for a wind power tower disclosed in this application;

[0054] Figure 4 This is a structural diagram of an electronic device disclosed in this application. DETAILED DESCRIPTION

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0056] Existing resonance suppression technologies have exposed multiple limitations in practical applications. For example, traditional passive damping technology relies on fixed parameters and is difficult to adapt to the natural frequency drift caused by uneven stiffness of mixed towers, and has poor effect on suppressing low-frequency resonances of 0.1-1Hz. Active control solutions such as active mass dampers require additional precision sensors, complex mechanisms, and independent energy sources, which have high modification costs and poor compatibility with existing units. Strategies based on variable pitch or variable speed are limited by the single adjustment dimension. For example, pitch angle adjustment can easily cause power fluctuations, and fixed speed disturbances cannot track the vibration phase and energy distribution in real time. To this end, the present application provides a method, device, equipment, and storage medium for suppressing the resonance of wind turbine towers, which can improve the resonance suppression effect of wind turbine towers.

[0057] See also Figure 1 As shown, an embodiment of the present invention discloses a method for suppressing resonance of a wind turbine tower, comprising:

[0058] Step S11: In a target wind turbine generator set, determine the current average wind speed, the three-axis acceleration of the wind tower, and the current rotor speed of the target wind turbine generator set, and determine the target frequency band energy proportion based on the three-axis acceleration.

[0059] In this embodiment, during the operation of the target wind turbine generator set, wind speed sampling is first performed using an ultrasonic anemometer deployed on the top of the nacelle. The anemometer continuously collects wind speed signals for T1 seconds (i.e., the first preset time period) at a sampling frequency of not less than H Hz (i.e., the minimum wind speed sampling frequency). After filtering out high-frequency noise caused by turbulence through a hardware filter circuit, the average wind speed for T1 seconds is calculated. This process sets a fixed sampling period and filtering threshold to ensure that the wind speed data can reflect the macroscopic flow characteristics of the wind field where the unit is currently located, and avoid the interference of short-term turbulent fluctuations on subsequent control decisions.

[0060] Next, the vibration monitoring is performed using a triaxial accelerometer installed on the top of the tower. This sensor can simultaneously collect acceleration signals in three orthogonal directions at the top of the tower in the Cartesian coordinate system, namely the triaxial acceleration, namely the first acceleration, the second acceleration and the third acceleration, and these three accelerations can be expressed as , that is, the first acceleration, the second acceleration, and the third acceleration represent the acceleration of the three dimensions in the preset three-dimensional coordinate system respectively. Then, the square value of the three-axis acceleration is determined, and the square value is accumulated, and the accumulated result is subjected to a preset square root operation to determine the corresponding first synthetic acceleration vector. In other words, through the vector synthesis algorithm, the three-axis acceleration is converted into the first synthetic acceleration vector that characterizes the overall vibration intensity of the tower. The specific calculation formula is The first synthetic acceleration vector can comprehensively reflect the vibration coupling effect of the tower in the front-back, left-right and vertical directions, and has more global representation significance than single axial data.

[0061] Secondly, the impeller speed is monitored by an encoder, which can be directly connected to the main shaft to Real-time feedback of the actual impeller speed with high measurement accuracy , where r represents the impeller revolutions and min represents minutes. Considering the dynamic characteristics of the speed signal, digital filtering can be performed on the original pulse signal to eliminate high-frequency jitter caused by transmission chain backlash, ensuring that the speed feedback value accurately reflects the actual rotation state of the impeller.

[0062] Furthermore, certain data preprocessing is performed on the current average wind speed and the first synthetic acceleration obtained above. Specifically, first, a T2-second sliding average filter is applied to the current average wind speed. By constructing a sliding window of length T2 seconds, a convolution operation is performed on the wind speed sequence to effectively smooth the instantaneous wind speed fluctuations. Second, a spectrum analysis is performed on the first synthetic acceleration to obtain the analysis results to extract the energy proportion within 0.1-1 Hz (i.e., the target frequency band). The energy proportion of the target frequency band is determined by combining the energy within the target frequency band with the energy within all frequency bands. By quantifying the proportion of this frequency band's energy in the overall vibration energy, the degree of coupling between 3P excitation and the tower's natural frequency can be sensitively identified, providing key characteristic parameters for resonance risk assessment. 3P excitation refers to the three primary frequencies associated with the rotational frequency of wind turbine blades. The blade rotational frequency produces different excitation effects, which significantly impact the turbine's operating performance and stability.

[0063] Step S12: Determine the initial disturbance amplitude, initial disturbance frequency, and disturbance phase to determine the corresponding initial disturbance parameters, and use the current average wind speed, the current impeller speed, and the target frequency band energy ratio to determine whether to use the disturbance mode as the operating mode of the wind turbine tower; the disturbance mode is a mode for suppressing the resonance phenomenon of the wind turbine tower.

[0064] In this embodiment, it is necessary to determine the initial disturbance parameters and determine whether to enter the disturbance mode based on the actual operating conditions. First, an amplitude is randomly selected from the preset amplitude set as the current amplitude. Then, the initial disturbance amplitude is determined based on the current amplitude and the current grid angular frequency. The grid angular frequency is an important parameter in the operation of the power system, which reflects the stability and operating characteristics of the grid. The calculation formula for the initial disturbance amplitude is: , where A is the current amplitude, and , is the current grid angular frequency. This calculation method links the grid’s operating status with the disturbance amplitude, allowing the disturbance amplitude to be adjusted based on the grid’s actual conditions, thereby better adapting to the wind tower’s operating environment.

[0065] Next, a frequency difference is randomly selected from the preset frequency difference set as the current frequency difference. Subsequently, the initial disturbance frequency is determined based on the current frequency difference and the first-order natural frequency of the wind tower. The first-order natural frequency is an important characteristic of the wind tower structure, which is related to factors such as the material and geometry of the tower. The calculation formula for the initial disturbance frequency is: ,in, is the first-order natural frequency of the wind turbine tower, is the current frequency difference, and By correlating the disturbance frequency with the first-order natural frequency of the tower, the disturbance signal can be used to suppress the resonance phenomenon more specifically.

[0066] Furthermore, the current vibration phase of the wind turbine tower top is determined based on the FFT (Fast Fourier Transform) algorithm. The Fast Fourier Transform algorithm can convert the time domain signal into the frequency domain signal, thereby conveniently extracting the phase information of the signal. By performing a Fast Fourier Transform on the tower top vibration signal, the current tower top vibration phase can be obtained. Then, the disturbance phase is determined based on the current tower top vibration phase and the first preset constant value. Specifically, the initial disturbance phase is set , where the first preset constant value is This setting aims to create an opposite phase between the disturbance signal and the tower top vibration signal. This effectively cancels out vibration energy after superposition, suppressing resonance. The initial disturbance parameters are then determined based on the initial disturbance amplitude, frequency, and phase. Together, these parameters form a complete disturbance signal, which is used to suppress resonance on wind turbine towers.

[0067] Next, in this embodiment, it is determined whether the current average wind speed is less than the preset wind speed threshold, whether the current impeller speed is within the preset speed range, and whether the target frequency band energy ratio is greater than the preset energy threshold, and the respective judgment results are obtained.

[0068] In a specific embodiment, if all the judgment results indicate yes, the disturbance mode is used as the operation mode of the wind turbine tower. Less than the set value (that is, the preset wind speed threshold), Within the limited range (that is, the preset speed range), and Greater than the set value When the energy threshold is reached (i.e., the preset energy threshold), the system enters the disturbance mode; otherwise, it exits the disturbance mode. In the disturbance mode, a corresponding disturbance signal is generated based on the determined initial disturbance parameters and superimposed on the operation control of the wind turbine tower to suppress the occurrence of resonance.

[0069] Step S13: When the disturbance mode is used as the operation mode, the wind turbine tower is disturbed based on the initial disturbance parameters.

[0070] In this embodiment, once the disturbance mode is determined as the operating mode of the wind turbine tower, the wind turbine tower is disturbed based on the initial disturbance parameters, that is, by generating a specific sinusoidal disturbance signal and superimposing it on the impeller speed, and at the same time performing dynamic limiting, the operating state of the tower is changed, thereby suppressing the resonance phenomenon and ensuring the safe and stable operation of the wind turbine tower.

[0071] Step S14: During the disturbance process, the initial disturbance amplitude is adjusted using the dynamic gain of the current average wind speed and the three-axis acceleration, and the initial disturbance frequency is adjusted using the frequency offset of the tower of the wind turbine tower to obtain corresponding target disturbance amplitude and target disturbance frequency.

[0072] In this embodiment, during the disturbance process of suppressing wind turbine tower resonance, the environment and the tower's own state are constantly changing. To ensure the suppression effect, the initial disturbance parameters need to be dynamically adjusted. By dynamically adjusting the disturbance amplitude and frequency, the disturbance signal can better adapt to the wind turbine tower's real-time operating conditions, effectively suppressing resonance.

[0073] Specifically, first, the first dynamic gain is determined based on the second preset constant value and the current average wind speed. The calculation formula of the first dynamic gain is: From this formula, we can see that when the wind speed is small, Close to 1, it means that the disturbance amplitude is less affected by wind speed; as the wind speed increases, This is because the dynamic characteristics of the tower change under high wind speeds, and the disturbance amplitude needs to be appropriately reduced to avoid excessive disturbance.

[0074] At the same time, a second dynamic gain is determined based on a third preset constant value and the three-axis acceleration. First, a first synthetic acceleration vector determined based on the three-axis acceleration is obtained, and then the second dynamic gain is calculated. , and limit it to , where g is the acceleration due to gravity. Similarly, from this formula, when the tower vibration acceleration is large, When it is close to 1, it means that the disturbance amplitude needs to be increased to suppress the vibration; when the vibration is small, As it approaches 0, the disturbance amplitude can be reduced accordingly.

[0075] After obtaining the first dynamic gain and the second dynamic gain, the initial disturbance amplitude is adjusted using the preset dynamic gain weight ratio. Assuming that the weight of the first dynamic gain is 0.6 and the weight of the second dynamic gain is 0.4, the target disturbance amplitude is This weighted combination method comprehensively considers the impact of wind speed and vibration on the disturbance amplitude, making the adjusted amplitude more in line with actual needs.

[0076] During the disturbance process, the tower frequency of the wind turbine tower may shift. In order to ensure that the disturbance frequency always matches the natural frequency of the tower, it is necessary to monitor the frequency offset in real time. By performing spectrum analysis on the vibration signal at the top of the tower, which is performed every T3 seconds, the offset of the natural frequency of the tower is calculated. When the offset is greater than the preset offset threshold, the initial disturbance frequency is adjusted based on the first-order natural frequency and the frequency offset to obtain the corresponding target disturbance frequency. The preset offset threshold can be , and the calculation formula of the target disturbance frequency is .

[0077] It's understandable that dynamically adjusting the initial disturbance amplitude and frequency during the disturbance process is crucial. By adjusting the disturbance amplitude based on wind speed and vibration, effective resonance suppression can be maintained under varying wind conditions, avoiding the potential impact of excessive or insufficient amplitudes. Furthermore, real-time tracking of tower frequency offset and adjusting the disturbance frequency ensures that the disturbance signal matches the tower's dynamic characteristics, improving the accuracy and stability of resonance suppression.

[0078] Step S15: determining a target impeller speed instruction based on the target disturbance amplitude, the target disturbance frequency, the disturbance phase, and the current grid angular frequency, and suppressing the resonance phenomenon of the wind turbine tower by using the target impeller speed instruction.

[0079] In this embodiment, during the wind turbine tower resonance suppression process, after obtaining the target disturbance amplitude, target disturbance frequency, disturbance phase and current grid angular frequency, a target impeller speed instruction can be determined accordingly. The instruction is a control parameter for suppressing resonance.

[0080] Specifically, according to the target disturbance amplitude , target disturbance frequency , disturbance phase And the current grid angular frequency , the target impeller speed command can be determined according to the formula, and the formula for determining the command is: , and this instruction is a dynamic signal that changes with time. It takes the grid angular frequency as the basis and superimposes a sinusoidal disturbance signal determined by the target disturbance amplitude, frequency and phase. And the speed range of the target impeller speed instruction is This design causes the impeller speed to fluctuate to a certain extent based on the grid frequency, thereby changing the 3P excitation frequency generated by the impeller rotation, avoiding its coupling with the tower's natural frequency, and achieving the purpose of suppressing resonance.

[0081] After determining the target impeller speed command, it can be further processed with the help of a preset PID controller (i.e., Proportional Integration Differentiation Controller). The PID controller is a commonly used feedback control algorithm in the field of industrial control. It can output the appropriate control quantity based on the system error signal through the calculation of the three links of proportion, integration and differentiation. In this embodiment, the preset PID controller determines the target torque based on the target impeller speed command and the current average wind speed. , the target torque calculation formula is as follows:

[0082] ;

[0083] Where, is the proportional parameter in the preset PID controller, It is the integral parameter in the preset PID controller.

[0084] After obtaining the target torque, the wind turbine tower's resonance is suppressed based on the target torque. By adjusting the generator's electromagnetic torque, the impeller's rotational resistance is altered, which in turn affects the impeller's speed. When the target torque increases, the impeller speed decreases accordingly; conversely, when the target torque decreases, the impeller speed increases. This ensures that the impeller's rotational state is more consistent with the target impeller speed command, effectively suppressing resonance.

[0085] In addition, in this embodiment, the target expected impeller speed corresponding to the target impeller speed instruction is determined. Here, the target expected impeller speed is actually the target impeller speed instruction. The speed error is determined based on the target expected impeller speed and the current impeller speed. The speed error reflects the difference between the current impeller speed and the target speed, and is an important basis for determining whether further adjustment of the pitch angle is required.

[0086] It should be noted that when the speed error is greater than the preset error threshold, it means that the impeller speed cannot be effectively controlled by adjusting the torque alone, and the pitch angle needs to be further adjusted. The preset error threshold can be Therefore, the target pitch angle is determined based on the initial disturbance frequency, disturbance phase and the preset pitch angle calculation formula. The preset pitch angle calculation formula is:

[0087] ;

[0088] Here, t represents the time variable, indicating a continuously changing value at any point in time from the start of calculation or monitoring of the relevant parameter. Adjusting the pitch angle changes the blade's angle of contact with the wind, thereby altering the aerodynamic torque applied to the impeller. Increasing the pitch angle reduces the blade's frontal area, lowering the aerodynamic torque and slowing the impeller speed; conversely, increasing the impeller speed.

[0089] Finally, the target pitch angle is used to adjust the wind turbine tower's current pitch angle, bringing the rotor speed closer to the target desired speed and further suppressing resonance. In practical applications, pitch angle adjustment requires precise control to avoid over-adjustment that can lead to system instability. Furthermore, the response speed and accuracy of pitch angle adjustment must be considered to ensure timely and effective response to speed errors.

[0090] Furthermore, to ensure the unit's safety in the event of a fault, a multi-level safety protection mechanism has been implemented. This protection is divided into three tiers: L1 Warning, L2 Load Reduction, and L3 Emergency Shutdown. Specifically, at L1 Warning, if the current composite acceleration vector exceeds 0.2g for T4 seconds, the system will immediately trigger an audible and visual alarm, where g represents the acceleration due to gravity. This early warning mechanism promptly alerts maintenance personnel to tower vibration, allowing them to take proactive measures to prevent further fault escalation. At L2 Load Reduction, if the current composite acceleration vector exceeds 0.25g, the system automatically halves the speed fluctuation amplitude. This reduction reduces the dynamic load on the tower, mitigates the risk of resonance, and protects the tower structure. At L3 Emergency Shutdown, if the current composite acceleration vector exceeds 0.3g, the system immediately initiates an emergency shutdown, reducing the blade pitch to 90 degrees. This ensures that in extreme situations, the unit can be quickly shut down to prevent serious damage to the tower and ensure the safety of personnel and equipment.

[0091] To facilitate subsequent offline analysis and algorithm optimization, the system stores operational data. This data includes, but is not limited to, current average wind speed, current rotor speed, target disturbance amplitude, vibration suppression rate, and power fluctuation rate. This data is stored in CSV (Comma-Separated Values) format, facilitating subsequent data mining and analysis, and providing strong support for further optimization of the resonance suppression algorithm.

[0092] As can be seen above, during the operation of the target wind turbine, the current average wind speed, the three-axis acceleration of the wind turbine tower, and the current rotor speed of the target wind turbine must first be obtained. Subsequently, the target frequency band energy percentage is calculated based on the three-axis acceleration. Next, the initial perturbation amplitude, initial perturbation frequency, and perturbation phase are determined; these parameters together constitute the initial perturbation parameters. The current average wind speed, current rotor speed, and target frequency band energy percentage are then combined to determine whether the perturbation mode should be set as the wind turbine tower's operating mode. If the perturbation mode is determined as the wind turbine tower's operating mode, a perturbation is applied to the wind turbine tower based on the initial perturbation parameters. During this perturbation process, the initial perturbation amplitude is adjusted based on the dynamic gain corresponding to the current average wind speed and three-axis acceleration. Simultaneously, the initial perturbation frequency is adjusted using the wind turbine tower's frequency offset, ultimately achieving the target perturbation amplitude and frequency. Finally, based on the target disturbance amplitude, target disturbance frequency, disturbance phase, and current grid angular frequency, a target rotor speed command is determined, and this command is used to suppress the resonance of the wind turbine tower. In this way, this application can improve the resonance suppression effect of the wind turbine tower, thereby ensuring the safe and stable operation of the wind turbine generator set under complex operating conditions to a certain extent.

[0093] join Figure 2 As shown, in order to further improve the resonance suppression effect, the embodiment of the present application further provides a specific method for suppressing the resonance of a wind turbine tower, including:

[0094] Step S21 : During the process of disturbing the wind turbine tower, the target impeller speed instruction is used to suppress the resonance phenomenon of the wind turbine tower.

[0095] The specific implementation process of step S21 can refer to the corresponding content disclosed in the aforementioned embodiment, and will not be repeated here.

[0096] Step S22: After suppressing the resonance phenomenon, determine a second synthetic acceleration vector when the operation mode of the wind turbine tower is the disturbance mode, and determine a vibration suppression rate using the first synthetic acceleration vector and the second synthetic acceleration vector.

[0097] In this embodiment, the first synthetic acceleration vector has been obtained, which reflects the vibration state of the wind turbine tower when no suppression measures are taken. After the resonance phenomenon is suppressed by the target rotor speed instruction, the wind turbine tower is in the disturbance mode, and the vibration data of the tower must be re-acquired. Similarly, the second synthetic acceleration vector is determined by the method of obtaining and calculating the first synthetic acceleration vector. In addition, the first synthetic acceleration vector can be expressed as , the second resultant acceleration vector is expressed as , the vibration suppression rate is determined using the first resultant acceleration vector and the second resultant acceleration vector. The formula for determining the vibration suppression rate is as follows:

[0098] .

[0099] Step S23: determine the rated power and output power of the target wind turbine generator set, and determine the maximum output power and minimum output power within a second preset time period from the output power, so as to determine the power fluctuation rate using the rated power, maximum output power and minimum output power.

[0100] In this embodiment, the rated power of the target wind turbine generator set is It represents the maximum power that the unit can stably output under standard working conditions. During the operation of the wind turbine tower, the output power of the unit needs to be monitored. Conduct real-time monitoring.

[0101] During the second preset time period, continuously record the changes in output power and find the maximum output power and minimum output power The power fluctuation rate is an important indicator to measure the stability of wind turbine output power. Its calculation formula is:

[0102] ;

[0103] It can be seen from the above formula that a lower power fluctuation rate indicates that the output power of the unit is relatively stable, which is conducive to the smooth operation of the power system; while a higher power fluctuation rate may cause an impact on the power grid and affect the power quality.

[0104] Step S24: If the vibration suppression rate is less than a first preset suppression rate threshold and the power fluctuation rate is less than a first preset fluctuation rate threshold, the target disturbance amplitude is adjusted accordingly based on a preset amplitude magnification factor.

[0105] In this embodiment, the first preset suppression rate threshold can be 30%, and the first preset fluctuation rate threshold can be 1%. In this case, when the vibration suppression rate is less than 30%, it means that the current resonance suppression effect has not met expectations and the vibration of the tower is still relatively obvious. At the same time, the power fluctuation rate is less than 1%, indicating that the output power of the unit is relatively stable and there is room for further adjustment. At this time, the target disturbance amplitude is adjusted based on the preset amplitude amplification factor. Among them, the preset amplitude amplification factor can be 1.2 times, that is, at this time, the target disturbance amplitude needs to be increased to 1.2 times the original value.

[0106] That is to say, in this case, by appropriately increasing the target disturbance amplitude, the suppression effect on resonance can be enhanced, and it is expected to improve the vibration suppression rate and better control the vibration of the tower.

[0107] Step S25: If the vibration suppression rate is greater than a second preset suppression rate threshold and the power fluctuation rate is greater than a second preset fluctuation rate threshold, the target disturbance amplitude is adjusted accordingly based on a preset amplitude reduction factor.

[0108] In this embodiment, the second preset suppression rate threshold can be 60%, and the second preset fluctuation rate threshold can be 2%. In this case, when the vibration suppression rate is greater than 60%, it indicates that the current resonance suppression effect is good and the vibration of the tower has been effectively controlled; however, if the power fluctuation rate is greater than 2%, it indicates that the output power of the unit fluctuates greatly, which may have an adverse impact on the stability of the power grid. At this time, the target disturbance amplitude is adjusted based on the preset amplitude reduction factor, where the preset amplitude reduction factor can be 0.8 times. In other words, at this time, the target disturbance amplitude needs to be reduced to 0.8 times the original value.

[0109] In this case, by appropriately reducing the target disturbance amplitude, although the vibration suppression rate may decrease slightly, the power fluctuation rate can be effectively reduced, the stability of the wind turbine output power can be ensured, and the wind turbine tower can achieve a better balance between resonance suppression and stable power output.

[0110] As can be seen from the above, in this embodiment, the vibration suppression rate is calculated by first obtaining the second synthetic acceleration vector in the disturbance mode and comparing it with the first synthetic acceleration vector before suppression. The maximum and minimum output power values within the second preset time period are then statistically analyzed. The power fluctuation rate is then determined in combination with the rated power to quantitatively evaluate the suppression effect and power stability. Furthermore, a multi-level safety protection mechanism is established by real-time monitoring of the synthetic acceleration vector. When vibration exceeds different thresholds, warnings, load reductions, and emergency shutdowns are triggered, respectively, to ensure unit safety. Key operating parameters are stored for offline analysis and algorithm optimization, forming a closed-loop feedback adaptive control system. This ensures dynamic adjustment of disturbance parameters under different operating conditions, improving the accuracy of resonance suppression and the reliability of system operation.

[0111] Accordingly, see Figure 3 As shown, an embodiment of the present application provides a resonance suppression device for a wind turbine tower, comprising:

[0112] An information determination module 11 is configured to determine, in a target wind turbine generator set, the current average wind speed, the three-axis acceleration of the wind tower, and the current rotor speed of the target wind turbine generator set, and determine the target frequency band energy proportion based on the three-axis acceleration;

[0113] a mode decision module 12, configured to determine an initial disturbance amplitude, an initial disturbance frequency, and a disturbance phase to determine corresponding initial disturbance parameters, and to use the current average wind speed, the current impeller speed, and the target frequency band energy ratio to determine whether to use the disturbance mode as the operating mode of the wind turbine tower; the disturbance mode is a mode for suppressing resonance of the wind turbine tower;

[0114] a tower disturbance module 13, configured to, when the disturbance mode is used as the operation mode, disturb the wind turbine tower based on the initial disturbance parameters;

[0115] an information adjustment module 14 for adjusting the initial disturbance amplitude using the dynamic gain of the current average wind speed and the three-axis acceleration, and adjusting the initial disturbance frequency using the frequency offset of the tower of the wind turbine tower, so as to obtain corresponding target disturbance amplitude and target disturbance frequency;

[0116] The resonance suppression module 15 is configured to determine a target impeller speed instruction based on the target disturbance amplitude, the target disturbance frequency, the disturbance phase, and the current grid angular frequency, and to suppress the resonance phenomenon of the wind turbine tower using the target impeller speed instruction.

[0117] As can be seen above, during the operation of the target wind turbine, the current average wind speed, the three-axis acceleration of the wind turbine tower, and the current rotor speed of the target wind turbine must first be obtained. Subsequently, the target frequency band energy percentage is calculated based on the three-axis acceleration. Next, the initial perturbation amplitude, initial perturbation frequency, and perturbation phase are determined; these parameters together constitute the initial perturbation parameters. The current average wind speed, current rotor speed, and target frequency band energy percentage are then combined to determine whether the perturbation mode should be set as the wind turbine tower's operating mode. If the perturbation mode is determined as the wind turbine tower's operating mode, a perturbation is applied to the wind turbine tower based on the initial perturbation parameters. During this perturbation process, the initial perturbation amplitude is adjusted based on the dynamic gain corresponding to the current average wind speed and three-axis acceleration. Simultaneously, the initial perturbation frequency is adjusted using the wind turbine tower's frequency offset, ultimately achieving the target perturbation amplitude and frequency. Finally, based on the target disturbance amplitude, target disturbance frequency, disturbance phase, and current grid angular frequency, a target rotor speed command is determined, and this command is used to suppress the resonance of the wind turbine tower. In this way, this application can improve the resonance suppression effect of the wind turbine tower, thereby ensuring the safe and stable operation of the wind turbine generator set under complex operating conditions to a certain extent.

[0118] In some specific implementations, the information determination module 11 specifically includes:

[0119] a wind speed determination unit, configured to obtain wind speed data within a first preset time period using a preset ultrasonic anemometer located on top of a nacelle of a wind turbine tower, and determine a current average wind speed based on the first preset time period and the wind speed data;

[0120] an acceleration determination unit, configured to collect a first acceleration, a second acceleration, and a third acceleration in a preset three-dimensional coordinate system using a preset three-axis accelerometer located at the top of the wind turbine tower, to determine corresponding three-axis accelerations; wherein the first acceleration, the second acceleration, and the third acceleration respectively represent accelerations in three dimensions in the preset three-dimensional coordinate system;

[0121] A rotation speed acquisition unit, configured to measure the current rotor speed of the target wind turbine generator set using a preset encoder to complete a rotation speed acquisition operation;

[0122] a vector determination unit, configured to determine square values of the three-axis accelerations, accumulate the square values, and perform a preset square root operation on the accumulated results to determine a corresponding first synthetic acceleration vector;

[0123] The proportion determining unit is used to perform spectrum analysis on the first synthetic acceleration vector, determine the frequency band energy in the target frequency band based on the obtained analysis result, and determine the target frequency band energy proportion using the frequency band energy in the target frequency band and the analysis result.

[0124] In some specific implementations, the mode decision module 12 specifically includes:

[0125] an initial amplitude determination unit, configured to randomly select an amplitude from a preset amplitude set as a current amplitude, and determine an initial disturbance amplitude based on the current amplitude and a current grid angular frequency;

[0126] an initial frequency determination unit, configured to randomly select a frequency difference from a preset frequency difference set as a current frequency difference, and determine an initial disturbance frequency based on the current frequency difference and a first-order natural frequency of the tower of the wind turbine tower;

[0127] a phase determination unit, configured to determine a current tower top vibration phase of the wind turbine tower based on a fast Fourier transform algorithm, and determine a disturbance phase based on the current tower top vibration phase and a first preset constant value;

[0128] A parameter determination unit is used to determine an initial disturbance parameter based on the initial disturbance amplitude, the initial disturbance frequency, and the disturbance phase.

[0129] In some specific implementations, the information adjustment module 14 specifically includes:

[0130] a gain determining unit, configured to determine a first dynamic gain based on a second preset constant value and a current average wind speed, and to determine a second dynamic gain based on a third preset constant value and the three-axis acceleration;

[0131] a target amplitude determination unit, configured to adjust the initial disturbance amplitude by using the first dynamic gain, the second dynamic gain, and a preset dynamic gain weight ratio to obtain a corresponding target disturbance amplitude;

[0132] A target frequency determination unit is configured to determine a frequency offset of the tower of the wind turbine tower, and if the frequency offset is greater than a preset offset threshold, adjust the initial disturbance frequency based on the first-order natural frequency and the frequency offset to obtain a corresponding target disturbance frequency.

[0133] In some specific implementations, the resonance suppression module 15 further includes:

[0134] a suppression rate determining unit, configured to determine a second synthetic acceleration vector when the operation mode of the wind turbine tower is the disturbance mode, and determine a vibration suppression rate using the first synthetic acceleration vector and the second synthetic acceleration vector;

[0135] a fluctuation rate determining unit, configured to determine the rated power and output power of the target wind turbine generator set, and determine the maximum output power and the minimum output power within a second preset time period from the output power, so as to determine the power fluctuation rate using the rated power, the maximum output power, and the minimum output power;

[0136] a first amplitude adjustment unit, configured to adjust the target disturbance amplitude accordingly based on a preset amplitude magnification factor if the vibration suppression rate is less than a first preset suppression rate threshold and the power fluctuation rate is less than a first preset fluctuation rate threshold;

[0137] The second amplitude adjustment unit is configured to adjust the target disturbance amplitude accordingly based on a preset amplitude reduction factor if the vibration suppression rate is greater than a second preset suppression rate threshold and the power fluctuation rate is greater than a second preset fluctuation rate threshold.

[0138] In some specific implementations, the mode decision module 12 specifically includes:

[0139] An information judgment unit is used to judge whether the current average wind speed is less than a preset wind speed threshold, whether the current impeller speed is within a preset speed range, and whether the target frequency band energy ratio is greater than a preset energy threshold, and obtain respective judgment results;

[0140] A mode determination unit is configured to use the disturbance mode as the operation mode of the wind turbine tower if all the judgment results indicate yes.

[0141] In some specific implementations, the resonance suppression module 15 specifically includes:

[0142] a resonance suppression unit, configured to determine a target torque based on the target impeller speed command and the current average wind speed through a preset PID controller, and suppress the resonance of the wind turbine tower based on the target torque;

[0143] an error determining unit, configured to determine a target expected impeller speed corresponding to the target impeller speed instruction, and determine a speed error based on the target expected impeller speed and the current impeller speed;

[0144] The pitch angle adjustment unit is configured to determine a target pitch angle based on an initial disturbance frequency, the disturbance phase, and a preset pitch angle calculation formula when the rotational speed error is greater than a preset error threshold, so as to adjust the current pitch angle of the wind turbine tower using the target pitch angle.

[0145] Furthermore, the embodiment of the present application also discloses an electronic device, Figure 4 This is a structural diagram of an electronic device 20 according to an exemplary embodiment. The content of the diagram should not be construed as limiting the scope of use of this application. The electronic device 20 may specifically include: at least one processor 21, at least one memory 22, a power supply 23, a communication interface 24, an input / output interface 25, and a communication bus 26. The memory 22 is used to store a computer program, which is loaded and executed by the processor 21 to implement the relevant steps of the wind turbine tower resonance suppression method disclosed in any of the aforementioned embodiments. Furthermore, the electronic device 20 in this embodiment may specifically be an electronic computer.

[0146] In this embodiment, the power supply 23 is used to provide operating voltage for each hardware device on the electronic device 20; the communication interface 24 can create a data transmission channel between the electronic device 20 and the external device. The communication protocol it follows is any communication protocol that can be applied to the technical solution of this application and is not specifically limited here; the input and output interface 25 is used to obtain external input data or output data to the outside world. Its specific interface type can be selected according to specific application needs and is not specifically limited here.

[0147] In addition, the memory 22 as a carrier for resource storage can be a read-only memory, random access memory, disk or optical disk, etc. The resources stored thereon can include an operating system 221, a computer program 222, etc., and the storage method can be temporary storage or permanent storage.

[0148] The operating system 221 is used to manage and control the hardware devices on the electronic device 20 and the computer program 222. The operating system 221 can be Windows Server, NetWare, Unix, Linux, etc. In addition to including a computer program capable of implementing the wind turbine tower resonance suppression method performed by the electronic device 20 as disclosed in any of the aforementioned embodiments, the computer program 222 can further include computer programs capable of implementing other specific tasks.

[0149] Furthermore, this application discloses a computer-readable storage medium for storing a computer program. When executed by a processor, the computer program implements the aforementioned method for suppressing resonance of a wind turbine tower. The specific steps of this method can be found in the corresponding contents disclosed in the aforementioned embodiments and will not be further elaborated here.

[0150] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from the other embodiments. Reference can be made to the descriptions of the identical or similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and the relevant parts can be referred to the descriptions of the methods.

[0151] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the components and steps of each example according to their functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0152] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0153] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0154] The above is a detailed introduction to the technical solution provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the ideas of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for suppressing resonance of a wind turbine tower, characterized in that: include: In a target wind turbine generator set, determining a current average wind speed, a three-axis acceleration of a wind tower, and a current rotor speed of the target wind turbine generator set, and determining a target frequency band energy proportion based on the three-axis acceleration; Determining an initial disturbance amplitude, an initial disturbance frequency, and a disturbance phase to determine corresponding initial disturbance parameters, and using the current average wind speed, the current impeller speed, and the target frequency band energy ratio to determine whether to use a disturbance mode as an operating mode of the wind turbine tower; the disturbance mode is a mode for suppressing resonance of the wind turbine tower; When the disturbance mode is used as the operation mode, the wind turbine tower is disturbed based on the initial disturbance parameter; During the disturbance process, the initial disturbance amplitude is adjusted using the dynamic gain related to the current average wind speed and the three-axis acceleration, and the initial disturbance frequency is adjusted using the frequency offset of the tower of the wind turbine tower to obtain corresponding target disturbance amplitude and target disturbance frequency; Determining a target impeller speed command based on the target disturbance amplitude, the target disturbance frequency, the disturbance phase, and the current grid angular frequency, and suppressing resonance of the wind turbine tower using the target impeller speed command; The determining of the current average wind speed, the three-axis acceleration of the wind tower, and the current rotor speed of the target wind turbine generator set, and determining the target frequency band energy proportion based on the three-axis acceleration, includes: Obtaining wind speed data within a first preset time period using a preset ultrasonic anemometer located on top of a nacelle of a wind turbine tower, and determining a current average wind speed based on the first preset time period and the wind speed data; Using a preset three-axis accelerometer located at the top of the wind turbine tower to collect a first acceleration, a second acceleration, and a third acceleration in a preset three-dimensional coordinate system to determine a corresponding three-axis acceleration; wherein the first acceleration, the second acceleration, and the third acceleration respectively represent accelerations in three dimensions in the preset three-dimensional coordinate system; Measuring the current rotor speed of the target wind turbine generator set using a preset encoder to complete a speed acquisition operation; Determining square values of the three-axis accelerations, accumulating the square values, and performing a preset square root operation on the accumulated results to determine a corresponding first synthetic acceleration vector; A frequency spectrum analysis is performed on the first synthesized acceleration vector, frequency band energy within a target frequency band is determined based on an obtained analysis result, and a target frequency band energy ratio is determined using the frequency band energy within the target frequency band and the analysis result.

2. The method for suppressing resonance of a wind turbine tower according to claim 1, characterized in that: The determining of the initial disturbance amplitude, the initial disturbance frequency, and the disturbance phase to determine the corresponding initial disturbance parameters includes: Randomly selecting an amplitude from a preset amplitude set as a current amplitude, and determining an initial disturbance amplitude based on the current amplitude and a current grid angular frequency; Randomly selecting a frequency difference from a preset frequency difference set as a current frequency difference, and determining an initial disturbance frequency based on the current frequency difference and a first-order natural frequency of the tower of the wind turbine tower; Determining a current tower top vibration phase of the wind turbine tower based on a fast Fourier transform algorithm, and determining a disturbance phase based on the current tower top vibration phase and a first preset constant value; An initial disturbance parameter is determined based on the initial disturbance amplitude, the initial disturbance frequency, and the disturbance phase.

3. The method for suppressing resonance of a wind turbine tower according to claim 2, characterized in that: The adjusting the initial disturbance amplitude by using the dynamic gain related to the current average wind speed and the three-axis acceleration, and adjusting the initial disturbance frequency by using the frequency offset of the tower of the wind turbine tower to obtain corresponding target disturbance amplitude and target disturbance frequency, includes: determining a first dynamic gain based on a second preset constant value and a current average wind speed, and determining a second dynamic gain based on a third preset constant value and the three-axis acceleration; Adjusting the initial disturbance amplitude using the first dynamic gain, the second dynamic gain, and a preset dynamic gain weight ratio to obtain a corresponding target disturbance amplitude; A frequency offset of the tower of the wind turbine tower is determined, and if the frequency offset is greater than a preset offset threshold, the initial disturbance frequency is adjusted based on the first-order natural frequency and the frequency offset to obtain a corresponding target disturbance frequency.

4. The method for suppressing resonance of a wind turbine tower according to claim 1, characterized in that: After suppressing the resonance phenomenon of the wind turbine tower by using the target impeller speed instruction, the method further includes: determining a second synthetic acceleration vector when the operation mode of the wind turbine tower is the disturbance mode, and determining a vibration suppression rate using the first synthetic acceleration vector and the second synthetic acceleration vector; determining a rated power and an output power of the target wind turbine generator set, and determining a maximum output power and a minimum output power within a second preset time period from the output power, so as to determine a power fluctuation rate using the rated power, the maximum output power, and the minimum output power; If the vibration suppression rate is less than a first preset suppression rate threshold and the power fluctuation rate is less than a first preset fluctuation rate threshold, adjusting the target disturbance amplitude accordingly based on a preset amplitude magnification factor; If the vibration suppression rate is greater than a second preset suppression rate threshold and the power fluctuation rate is greater than a second preset fluctuation rate threshold, the target disturbance amplitude is adjusted accordingly based on a preset amplitude reduction factor.

5. The method for suppressing resonance of a wind turbine tower according to claim 1, characterized in that: The determining whether to use the disturbance mode as the operation mode of the wind turbine tower by using the current average wind speed, the current impeller speed, and the target frequency band energy proportion includes: Determine whether the current average wind speed is less than a preset wind speed threshold, whether the current impeller speed is within a preset speed range, and whether the target frequency band energy ratio is greater than a preset energy threshold, and obtain respective judgment results; If all the judgment results indicate yes, the disturbance mode is used as the operation mode of the wind turbine tower.

6. The method for suppressing resonance of a wind turbine tower according to any one of claims 1 to 5, characterized in that: The suppressing the resonance phenomenon of the wind turbine tower by using the target impeller speed instruction includes: Determining a target torque based on the target impeller speed command and the current average wind speed by a preset PID controller, and suppressing the resonance of the wind turbine tower based on the target torque; determining a target desired impeller speed corresponding to the target impeller speed command, and determining a speed error based on the target desired impeller speed and the current impeller speed; When the rotation speed error is greater than a preset error threshold, a target pitch angle is determined based on the initial disturbance frequency, the disturbance phase and a preset pitch angle calculation formula, so as to adjust the current pitch angle of the wind turbine tower using the target pitch angle.

7. A resonance suppression device for a wind power tower, characterized in that: include: an information determination module, configured to determine, in a target wind turbine generator set, the current average wind speed, the three-axis acceleration of the wind tower, and the current rotor speed of the target wind turbine generator set, and determine the target frequency band energy proportion based on the three-axis acceleration; a mode decision module, configured to determine an initial disturbance amplitude, an initial disturbance frequency, and a disturbance phase to determine corresponding initial disturbance parameters, and to use the current average wind speed, the current impeller speed, and the target frequency band energy ratio to determine whether to use the disturbance mode as the operating mode of the wind turbine tower; the disturbance mode is a mode for suppressing resonance of the wind turbine tower; a tower disturbance module, configured to, when the disturbance mode is used as the operation mode, disturb the wind turbine tower based on the initial disturbance parameter; an information adjustment module, configured to adjust the initial disturbance amplitude by using the dynamic gain of the current average wind speed and the three-axis acceleration, and to adjust the initial disturbance frequency by using the frequency offset of the tower of the wind turbine tower, so as to obtain corresponding target disturbance amplitude and target disturbance frequency; a resonance suppression module, configured to determine a target impeller speed instruction based on the target disturbance amplitude, the target disturbance frequency, the disturbance phase, and the current grid angular frequency, and to suppress the resonance phenomenon of the wind turbine tower using the target impeller speed instruction; The determining of the current average wind speed, the three-axis acceleration of the wind tower, and the current rotor speed of the target wind turbine generator set, and determining the target frequency band energy proportion based on the three-axis acceleration, includes: a wind speed determination unit, configured to obtain wind speed data within a first preset time period using a preset ultrasonic anemometer located on top of a nacelle of a wind turbine tower, and determine a current average wind speed based on the first preset time period and the wind speed data; an acceleration determination unit, configured to collect a first acceleration, a second acceleration, and a third acceleration in a preset three-dimensional coordinate system using a preset three-axis accelerometer located at the top of the wind turbine tower, to determine corresponding three-axis accelerations; wherein the first acceleration, the second acceleration, and the third acceleration respectively represent accelerations in three dimensions in the preset three-dimensional coordinate system; A rotation speed acquisition unit, configured to measure the current rotor speed of the target wind turbine generator set using a preset encoder to complete a rotation speed acquisition operation; a vector determination unit, configured to determine square values of the three-axis accelerations, accumulate the square values, and perform a preset square root operation on the accumulated results to determine a corresponding first synthetic acceleration vector; The proportion determining unit is used to perform spectrum analysis on the first synthetic acceleration vector, determine the frequency band energy in the target frequency band based on the obtained analysis result, and determine the target frequency band energy proportion using the frequency band energy in the target frequency band and the analysis result.

8. An electronic device, characterized in that: include: Memory, used to store computer programs; A processor is configured to execute the computer program to implement the method for suppressing resonance of a wind turbine tower according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that Used to store a computer program; wherein, when the computer program is executed by a processor, the method for suppressing resonance of a wind power tower according to any one of claims 1 to 6 is implemented.

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