Wind turbine control method, device, storage medium and electronic device

Abstract

The present disclosure belongs to the field of wind power generation, and particularly relates to a wind power generator control method, device, medium and electronic equipment, wherein the method comprises: determining that the generator is in a specified operating state, acquiring generator speed data of the generator; judging whether the speed change of the generator meets a preset condition based on the generator speed data; and if yes, adjusting the proportional gain coefficient of the controller of the generator to a target proportional gain coefficient.

Description

Technical Field

[0001] This disclosure relates to the field of wind turbine generator control technology, and in particular to a wind turbine generator control method, device, storage medium and electronic equipment. Background Technology

[0002] Wind power generation is a relatively mature new energy technology. Wind power generation requires strong environmental adaptability; therefore, technologies for controlling the stable operation of wind turbine generators are receiving increasing attention.

[0003] In related technologies, large wind turbines are nonlinear systems with large inertia and time delays. Currently, different control strategies are employed in different operating ranges to achieve different control objectives. Generally, within the operating wind speed range, the unit's operating range is mainly divided into the minimum speed zone, the maximum wind energy capture zone, the transition zone, and the full-power zone. Numerous field operation experiences show that generator overspeed problems are more likely to occur in the transition zone. This is because the wind speed is generally higher in the transition zone, and when encountering significant turbulence, the generator speed fluctuates greatly within a short period of time, suddenly increasing or decreasing. This may cause the unit's ultimate load to exceed the limit, affecting the safe and stable operation of the unit, or the unit's speed to exceed a certain protection threshold, triggering generator overspeed faults and resulting in power generation loss.

[0004] Currently, when the unit is operating in the transition phase, constant speed control is achieved through a designed PID or PI controller. However, the main control parameters of the current PID or PI controllers are designed to be fixed values. Under certain special operating conditions (such as gusts of wind), when the wind speed of the unit increases or decreases sharply in a short period of time, the controller needs to respond faster or slower to control the fluctuation of the generator speed. However, the aforementioned control parameters are usually designed to be fixed values, which causes the unit to respond too slowly or too quickly, resulting in large fluctuations in generator speed. This may trigger overspeed faults in the unit, leading to power generation losses. Summary of the Invention

[0005] The purpose of this disclosure is to provide a wind turbine control method, apparatus, storage medium, and electronic device, thereby at least partially solving the aforementioned technical problems.

[0006] According to a first aspect of the present disclosure, a wind turbine control method is provided, the method comprising:

[0007] When the generator is determined to be in a specified operating state, the generator speed data of the generator is acquired;

[0008] Based on the generator speed data, determine whether the change in generator speed meets the preset conditions;

[0009] If so, adjust the proportional gain coefficient of the generator controller to the target proportional gain coefficient.

[0010] Optionally, in one embodiment, adjusting the proportional gain coefficient of the generator's controller to the target proportional gain coefficient includes:

[0011] Determine the target coefficient;

[0012] Based on the proportional gain coefficient and the target coefficient, the target proportional gain coefficient is determined;

[0013] The target proportional gain coefficient is linearly related to the proportional gain coefficient.

[0014] Optionally, in one embodiment, determining the target proportional gain coefficient based on the proportional gain coefficient and the target coefficient includes:

[0015] The target proportional gain coefficient K is determined based on the following formula. p :

[0016] K p =K p0 (1+a);

[0017] Among them, K p0 Let a represent the proportional gain coefficient, and let a represent the target coefficient, where 0 < a < 0.1.

[0018] Optionally, in one embodiment, determining that the generator is in a specified operating state includes:

[0019] Calculate the average generator speed and average output power of the generator within a preset time period;

[0020] When the average generator speed is greater than or equal to a first specified speed and the average output power is less than or equal to a specified power, the generator is determined to be in the specified operating state.

[0021] Wherein, the first specified speed is the product of the generator's maximum speed and the generator speed coefficient, and the speed coefficient is between 0.85 and 0.95;

[0022] The specified power is the difference between the rated power of the generator and the power margin, where the power margin ranges from 20 to 80 kW.

[0023] Optionally, in one embodiment, obtaining the generator speed data of the generator includes:

[0024] Obtain the first generator speed of the generator at the current moment, and the second generator speed of the generator at the previous moment;

[0025] The step of determining whether the generator speed change meets preset conditions based on the generator speed data includes:

[0026] Calculate the speed difference between the first generator speed and the second generator speed;

[0027] When the speed difference is greater than zero and the speed of the first generator is greater than or equal to the second specified speed, it is determined that the speed change of the generator satisfies the preset condition; wherein, the second specified speed is 1.03 to 1.08 times the maximum speed of the generator.

[0028] Optionally, in one embodiment, obtaining the generator speed data of the generator includes:

[0029] Obtain multiple generator speeds of the generator within a preset time period, the preset time period including the current time;

[0030] The step of determining whether the generator speed change meets preset conditions based on the generator speed data includes:

[0031] Calculate the average rate of change of the rotational speeds of the plurality of generators;

[0032] When the average rate of change is greater than zero and the generator speed at the current moment is greater than or equal to the second specified speed, it is determined that the change in the generator speed satisfies the preset condition; wherein, the second specified speed is 1.03 to 1.08 times the maximum speed of the generator.

[0033] Optionally, in one embodiment, the method further includes:

[0034] Determine whether the generator is in a yaw state;

[0035] When the generator is not in a yaw state and the change in the generator speed meets the preset condition, the proportional gain coefficient of the generator's torque controller is adjusted to the target proportional gain coefficient.

[0036] According to a second aspect of the present disclosure, a wind turbine control device is provided, comprising:

[0037] The data acquisition module is used to acquire the generator speed data of the generator when the generator is in a specified operating state;

[0038] The speed determination module is used to determine whether the change in the generator speed meets preset conditions based on the generator speed data.

[0039] The control and adjustment module is used to adjust the proportional gain coefficient of the generator controller to the target proportional gain coefficient if the speed judgment module determines that the result is yes.

[0040] According to a third aspect of the present disclosure, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the wind turbine control method described in any of the above embodiments.

[0041] According to a fourth aspect of the present disclosure, an electronic device is provided, comprising:

[0042] A memory on which computer programs are stored;

[0043] A processor is configured to implement the wind turbine control method described in any of the above embodiments when executing the computer program.

[0044] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0045] In this embodiment, when the wind turbine is determined to be in a specified operating state, the generator speed data of the generator is acquired. Based on the generator speed data, it is determined whether the change in generator speed meets a preset condition. If so, the proportional gain coefficient of the generator controller is adjusted to the target proportional gain coefficient. This avoids directly measuring the wind speed, but instead uses the detection of generator speed to indirectly measure the wind speed by judging the change in generator speed. When a sudden change in wind speed is indirectly measured, i.e., the change in generator speed meets the preset condition, the proportional gain coefficient of the controller is adjusted to the target proportional gain coefficient. In this way, under certain special operating conditions (such as gusts), when the wind speed of the unit increases or decreases sharply in a short period of time, the controller can respond more quickly by adjusting the control parameters, i.e., the control parameters are matched with the wind speed change. This can effectively reduce excessive fluctuations in generator speed, improve the stability of unit operation, and avoid power generation loss caused by overspeed faults. Attached Figure Description

[0046] Figure 1 A schematic diagram of the wind turbine's operating range is shown.

[0047] Figure 2 This diagram illustrates the control block diagram of a wind turbine in the relevant technology.

[0048] Figure 3 This diagram illustrates a flowchart of a wind turbine control method in an exemplary embodiment of this disclosure.

[0049] Figure 4 This diagram illustrates a wind turbine control block diagram in an exemplary embodiment of this disclosure.

[0050] Figure 5 A schematic diagram of a wind turbine generator control device, an exemplary embodiment of the present disclosure, is shown. Detailed Implementation

[0051] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0052] Furthermore, the accompanying drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities.

[0053] Modern large wind turbines generally employ variable speed and variable pitch control. Within their operating wind speed range (from cut-in wind speed to cut-out wind speed), they are typically divided into four different operating zones. Different operating zones employ different control strategies to achieve different control objectives, as shown in the figure. Figure 1 As shown, Zone I: Minimum speed zone, torque control (PI or PID), the speed is stabilized at the set minimum speed; Zone II: Maximum wind energy capture zone, tracking the optimal tip speed ratio to achieve maximum wind energy capture; Zone III: Transition zone, torque control (PI or PID), the set speed is the maximum operating speed of the unit; Zone IV: Full power zone, pitch control (PI or PID), generally constant power operation.

[0054] When the unit is operating in the transition section, torque control is adopted, generally through a PI controller or PID controller. The generator's rated speed (i.e., the given speed) is used as the reference speed. The deviation between the actual unit speed and the reference speed is detected, and the torque demand of the unit is adjusted through the controller. A basic control block diagram is shown below. Figure 2 As shown.

[0055] The control parameters of a PI or PID controller typically include the proportional gain coefficient, integral gain coefficient, and derivative gain coefficient. Generally, when designing a controller, these three control parameters are determined based on the system output response characteristics and system stability characteristics to ensure stable generator speed. However, it should be noted that, under normal circumstances, these control parameters remain unchanged for the same generator model. Wind turbines of the same model may be installed in different terrain conditions or operate under varying operating conditions. At certain turbine locations, due to terrain factors, wind speed and direction may change frequently, especially under strong wind conditions. When wind speed or direction changes abruptly, the generator speed may suddenly increase, potentially leading to overspeed faults and power generation losses. This is because the aforementioned control parameters are designed as fixed values, causing the generator response to be either too slow or too fast, for example, resulting in large generator speed fluctuations and sudden speed increases.

[0056] To at least partially address the aforementioned problems, this exemplary embodiment provides a wind turbine control method, such as... Figure 3 As shown, the method includes the following steps:

[0057] Step S101: When the generator is determined to be in a specified operating state, obtain the generator speed data of the generator.

[0058] For example, the specified operating state may be the transition phase, typically with the speed set to the unit's maximum operating speed. When it is determined that the generator is in the transition phase, generator speed data can be acquired.

[0059] Step S102: Based on the generator speed data, determine whether the change in generator speed meets the preset conditions.

[0060] For example, fluctuations in generator speed indirectly reflect changes in wind speed. For instance, sudden changes in wind speed usually lead to changes in generator speed. Therefore, in this embodiment, the generator speed is detected and the generator speed change is determined to indirectly determine whether a sudden change in wind speed has occurred.

[0061] Step S103: If yes, adjust the proportional gain coefficient of the generator controller to the target proportional gain coefficient.

[0062] For example, the controller can be a PID controller or a PI controller. When it is determined that the generator speed change meets a preset condition, i.e., a sudden change in wind speed has occurred, the control parameters of the PID controller, such as the proportional gain coefficient (the integral and derivative gain coefficients can remain unchanged), are adjusted to the target proportional gain coefficient. This improves the controller's response time, thereby controlling generator speed fluctuations. The control logic for adjusting the proportional gain coefficient in this embodiment is as follows: Figure 4As shown.

[0063] The solution of this disclosure avoids directly measuring wind speed. Instead, it indirectly measures sudden changes in wind speed by detecting changes in generator speed. When a sudden change in wind speed, i.e., a change in generator speed, is indirectly measured and meets preset conditions, the proportional gain coefficient of the controller is adjusted to the target proportional gain coefficient. In this way, under certain special operating conditions (such as gusts or strong turbulence), when the wind speed of the unit increases or decreases sharply in a short period of time, the controller can respond more quickly by adjusting the control parameters. That is, the control parameters are matched with the wind speed change, which can effectively reduce excessive fluctuations in generator speed, improve the stability of unit operation, and avoid problems such as power generation loss caused by overspeed faults of the unit.

[0064] In addition, generally speaking, anemometers are installed behind the impeller, and due to the turbulence caused by the impeller, the wind speed detection is inaccurate. In this embodiment, the wind speed is not directly detected, and the wind speed is not used as an input factor for control in this embodiment, which can avoid the use of an anemometer and reduce costs.

[0065] Optionally, in one embodiment, adjusting the proportional gain coefficient of the generator controller to a target proportional gain coefficient in step S103 includes: determining a target coefficient; determining the target proportional gain coefficient based on the proportional gain coefficient and the target coefficient; wherein the target proportional gain coefficient is linearly related to the proportional gain coefficient.

[0066] For example, the target coefficient can be determined based on the change in generator speed, such as an increment, but it is not limited to this.

[0067] Specifically, in one embodiment, determining the target proportional gain coefficient based on the proportional gain coefficient and the target coefficient includes: determining the target proportional gain coefficient K based on the following formula. p :

[0068] K p =K p0 (1+a);

[0069] Among them, K p0 Let a represent the proportional gain coefficient, and let a represent the target coefficient, where 0 < a < 0.1.

[0070] In this embodiment, the value of the target coefficient 'a' is limited to the above range, which can prevent large jumps when the proportional gain coefficient of the controller is adjusted, thereby further effectively reducing excessive fluctuations in the generator speed and improving the stability of the unit operation.

[0071] Optionally, in one embodiment, determining that the generator is in a specified operating state in step S101 includes: calculating the average generator speed and average output power of the generator within a preset time period; determining that the generator is in the specified operating state when the average generator speed is greater than or equal to a first specified speed and the average output power is less than or equal to a specified power; wherein, the first specified speed is the product of the generator's maximum speed and the generator speed coefficient, and the speed coefficient is 0.85 to 0.95; the specified power is the difference between the generator's rated power and the power margin, and the power margin is 20 to 80 kW.

[0072] For example, the preset duration could be 1 minute, but it is not limited to this. The determination of whether the generator is in a specified operating state, i.e., the transition phase, can generally be determined by the following formula:

[0073]

[0074] Where ω is the average generator speed within a preset time period, i.e., the average generator speed at each moment within that preset time period, and p is the average output power of the generator within a preset time period, i.e., the average output power at each moment within that preset time period. max γ is the maximum operating speed of the generator; γ is the generator speed coefficient, typically ranging from 0.85 to 0.95; p0 is the rated power of the generator, in kW; δ is the power margin, ranging from 20 to 80 kW.

[0075] The above method can accurately determine whether the generator is in a specified operating state, i.e., the operating state of the transition section. The control process of this embodiment will only be started when it is determined that the generator is in the specified operating state, which can improve the accuracy of the generator transition section operation control.

[0076] Optionally, in one embodiment, obtaining the generator speed data in step S101 includes: obtaining the first generator speed ω(t) of the generator at the current moment and the second generator speed ω(t-1) of the generator at the previous moment. Determining whether the generator speed change satisfies a preset condition based on the generator speed data includes: calculating the speed difference ω' between the first generator speed and the second generator speed; determining that the generator speed change satisfies the preset condition when the speed difference is greater than zero and the first generator speed is greater than or equal to a second specified speed ω0; wherein the second specified speed ω0 is the maximum speed ω of the generator. max 1.03 to 1.08 times, that is, ω0 = b * ω max b takes values ​​from 1.03 to 1.08.

[0077] For example, when ω'=ω(t)-ω(t-1)>0 and ω(t)≥ω0, the change in generator speed satisfies the preset condition.

[0078] Optionally, in another embodiment, obtaining the generator speed data in step S101 includes: obtaining multiple generator speeds of the generator within a preset time period, the preset time period including the current moment. Correspondingly, determining whether the generator speed change meets a preset condition based on the generator speed data in step S102 includes: calculating the average rate of change of the multiple generator speeds; and determining that the generator speed change meets the preset condition when the average rate of change is greater than zero and the generator speed corresponding to the current moment is greater than or equal to a second specified speed ω0.

[0079] For example, the average rate of change Δω of the rotational speeds of the plurality of generators can be determined by the following formula:

[0080]

[0081] Where ω(t) i ) represents the generator speed at the i-th moment within a preset time period, such as 1 minute, ω(t) i +1) represents the generator speed corresponding to the time adjacent to the i-th time, i = 1, 2, ..., N, that is, a total of N time points.

[0082] Optionally, in one embodiment, the method may further include the following steps:

[0083] Step i): Determine whether the generator is in a yaw state.

[0084] Specifically, wind turbines require the rotor to always be facing the wind during operation. When facing the wind, the rotor speed can be very high, resulting in high power generation efficiency. Since wind speed is dynamic, the rotor speed will fluctuate. When the rotor speed is too high, it will cause the rotor to be out of the wind, a state known as yaw. This embodiment can determine whether the wind turbine is in a yaw state. The specific determination method can be understood by referring to existing technologies, and is not limited thereto; it will not be elaborated further here.

[0085] Step ii): When the generator is not in a yaw state and the change in the generator speed meets the preset condition, adjust the proportional gain coefficient of the generator torque controller to the target proportional gain coefficient.

[0086] That is, the proportional gain coefficient of the generator torque controller is adjusted to the target proportional gain coefficient only when it is determined that the generator is not in a yaw state and the change in generator speed meets the preset conditions. Since yaw state may cause fluctuations in generator speed, the solution in this embodiment needs to eliminate the impact of this situation. Therefore, this operating condition is excluded, making the control and adjustment of the wind turbine more accurate and avoiding erroneous adjustments.

[0087] This disclosure also provides a wind turbine generator control device, such as... Figure 5 The wind turbine control device shown may include:

[0088] The data acquisition module 501 is used to acquire the generator speed data of the generator when it is determined that the generator is in a specified operating state;

[0089] The speed determination module 502 is used to determine whether the speed change of the generator meets the preset conditions based on the generator speed data.

[0090] The control adjustment module 503 is used to adjust the proportional gain coefficient of the generator controller to the target proportional gain coefficient if the speed judgment module determines that the result is yes.

[0091] The solution of this disclosure avoids directly measuring wind speed. Instead, it indirectly measures sudden changes in wind speed by detecting changes in generator speed. When a sudden change in wind speed, i.e., a change in generator speed, is indirectly measured and meets preset conditions, the proportional gain coefficient of the controller is adjusted to the target proportional gain coefficient. In this way, under certain special operating conditions (such as gusts or strong turbulence), when the wind speed of the unit increases or decreases sharply in a short period of time, the controller can respond more quickly by adjusting the control parameters. That is, the control parameters are matched with the wind speed change, which can effectively reduce excessive fluctuations in generator speed, improve the stability of unit operation, and avoid problems such as power generation loss caused by overspeed faults of the unit.

[0092] Optionally, in one embodiment, the control adjustment module 503 is configured to: determine a target coefficient; determine a target proportional gain coefficient based on the proportional gain coefficient and the target coefficient; wherein the target proportional gain coefficient is linearly related to the proportional gain coefficient.

[0093] Optionally, in one embodiment, the control adjustment module 503 is used to determine the target proportional gain coefficient K based on the following formula. p :

[0094] K p =K p0 (1+a);

[0095] Among them, K p0 Let a represent the proportional gain coefficient, and let a represent the target coefficient, where 0 < a < 0.1.

[0096] Optionally, in one embodiment, the device further includes a state detection module for: calculating the average generator speed and average output power of the generator within a preset time period; and determining that the generator is in the specified operating state when the average generator speed is greater than or equal to a first specified speed and the average output power is less than or equal to a specified power; wherein the first specified speed is the product of the generator's maximum speed and the generator speed coefficient, and the speed coefficient is 0.85 to 0.95; the specified power is the difference between the generator's rated power and the power margin, and the power margin is 20 to 80 kW.

[0097] Optionally, in one embodiment, the data acquisition module 501 acquires the generator speed data of the generator, including: acquiring the first generator speed of the generator at the current moment and the second generator speed of the generator at the previous moment. The speed determination module 502, based on the generator speed data, determines whether the change in generator speed meets a preset condition, including: calculating the speed difference between the first generator speed and the second generator speed; when the speed difference is greater than zero and the first generator speed is greater than or equal to a second specified speed, determining that the change in generator speed meets the preset condition; wherein the second specified speed is 1.03 to 1.08 times the maximum speed of the generator.

[0098] Optionally, in one embodiment, the data acquisition module 501 acquires generator speed data of the generator, including: acquiring multiple generator speeds of the generator within a preset time period, the preset time period including the current moment. The speed determination module 502, based on the generator speed data, determines whether the change in generator speed meets a preset condition, including: calculating the average rate of change of the multiple generator speeds; when the average rate of change is greater than zero, and the generator speed corresponding to the current moment is greater than or equal to a second specified speed, determining that the change in generator speed meets the preset condition; wherein the second specified speed is 1.03 to 1.08 times the maximum speed of the generator.

[0099] Optionally, in one embodiment, the device further includes a state determination module for determining whether the generator is in a yaw state; the control adjustment module 503 is used to adjust the proportional gain coefficient of the generator's torque controller to the target proportional gain coefficient when the generator is not in a yaw state and the change in the generator's speed meets the preset condition.

[0100] This disclosure also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the wind turbine control method described in any of the above embodiments.

[0101] In addition, another embodiment of this disclosure provides an electronic device, including a memory storing a computer program thereon; and a processor for implementing the wind turbine control method described in any of the above embodiments when executing the computer program.

[0102] The electronic device and storage medium scheme of this disclosure can avoid directly measuring wind speed. Instead, it indirectly measures sudden changes in wind speed by detecting changes in generator speed. When a sudden change in wind speed, i.e., a change in generator speed, is indirectly measured and meets preset conditions, the proportional gain coefficient of the controller is adjusted to the target proportional gain coefficient. In this way, under certain special operating conditions (such as gusts or strong turbulence), when the wind speed of the unit increases or decreases sharply in a short period of time, the controller can respond more quickly by adjusting the control parameters. That is, the control parameters are matched with the wind speed change, which can effectively reduce excessive fluctuations in generator speed, improve the stability of unit operation, and avoid problems such as power generation loss caused by overspeed faults of the unit.

[0103] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0104] In summary, other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A wind turbine control method, characterized in that, The method includes: When the generator is determined to be in a specified operating state, the generator speed data of the generator is acquired; Based on the generator speed data, determine whether the change in generator speed meets the preset conditions; If so, adjust the proportional gain coefficient of the generator controller to the target proportional gain coefficient; Determining that the generator is in a specified operating state includes: Calculate the average generator speed and average output power of the generator within a preset time period; When the average generator speed is greater than or equal to a first specified speed and the average output power is less than or equal to a specified power, the generator is determined to be in the specified operating state. Wherein, the first specified speed is the product of the generator's maximum speed and the generator speed coefficient; The specified power is the difference between the generator's rated power and its power margin.

2. The method according to claim 1, characterized in that, Adjusting the proportional gain coefficient of the generator controller to the target proportional gain coefficient includes: Determine the target coefficient; Based on the proportional gain coefficient and the target coefficient, the target proportional gain coefficient is determined; The target proportional gain coefficient is linearly related to the proportional gain coefficient.

3. The method according to claim 2, characterized in that, Determining the target proportional gain coefficient based on the proportional gain coefficient and the target coefficient includes: The target proportional gain coefficient K is determined based on the following formula. p : K p =K p0 (1+a); Among them, K p0 Let a represent the proportional gain coefficient, and let a represent the target coefficient, where 0 < a < 0.

1.

4. The method according to claim 1, characterized in that, The speed coefficient is between 0.85 and 0.

95. The power margin is between 20 and 80 kW.

5. The method according to claim 1, characterized in that, The process of obtaining the generator speed data includes: Obtain the first generator speed of the generator at the current moment, and the second generator speed of the generator at the previous moment; The step of determining whether the generator speed change meets preset conditions based on the generator speed data includes: Calculate the speed difference between the first generator speed and the second generator speed; When the speed difference is greater than zero and the speed of the first generator is greater than or equal to the second specified speed, it is determined that the speed change of the generator satisfies the preset condition; wherein, the second specified speed is 1.03 to 1.08 times the maximum speed of the generator.

6. The method according to claim 1, characterized in that, The process of obtaining the generator speed data includes: Obtain multiple generator speeds of the generator within a preset time period, the preset time period including the current time; The step of determining whether the generator speed change meets preset conditions based on the generator speed data includes: Calculate the average rate of change of the rotational speeds of the plurality of generators; When the average rate of change is greater than zero and the generator speed at the current moment is greater than or equal to the second specified speed, it is determined that the change in the generator speed satisfies the preset condition; wherein, the second specified speed is 1.03 to 1.08 times the maximum speed of the generator.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: Determine whether the generator is in a yaw state; When the generator is not in a yaw state and the change in the generator speed meets the preset condition, the proportional gain coefficient of the generator's torque controller is adjusted to the target proportional gain coefficient.

8. A wind turbine generator control device, characterized in that, The data acquisition module is used to acquire the generator speed data of the generator when the generator is in a specified operating state; The speed determination module is used to determine whether the change in the generator speed meets preset conditions based on the generator speed data. The control and adjustment module is used to adjust the proportional gain coefficient of the generator controller to the target proportional gain coefficient if the speed judgment module determines that the result is yes. Determining that the generator is in a specified operating state includes: Calculate the average generator speed and average output power of the generator within a preset time period; When the average generator speed is greater than or equal to a first specified speed and the average output power is less than or equal to a specified power, the generator is determined to be in the specified operating state. Wherein, the first specified speed is the product of the generator's maximum speed and the generator speed coefficient; The specified power is the difference between the generator's rated power and its power margin.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the wind turbine control method according to any one of claims 1 to 7.

10. An electronic device, characterized in that, include: A memory on which computer programs are stored; A processor for implementing the wind turbine control method according to any one of claims 1 to 7 when executing the computer program.

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