CN114294162A - Wind turbine control method, device, storage medium and electronic device - Google Patents

Abstract

The disclosure belongs to the field of wind power generation, and particularly relates to a control method, a control device, a control medium and electronic equipment for a wind driven generator, wherein the method comprises the following steps: when the generator is determined to be in a specified running state, acquiring generator rotating speed data of the generator; judging whether the rotation speed change of the generator meets a preset condition or not based on the rotation speed data of the generator; if yes, adjusting the proportional gain coefficient of the controller of the generator to a target proportional gain coefficient.

Description

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

technical field

The present disclosure relates to the technical field of wind turbine control, and in particular, to a wind turbine control method, device, storage medium and electronic device.

Background technique

Wind power generation is a relatively mature new energy technology. Wind power generation requires strong environmental adaptability, so the technology to control the stable operation of wind turbines has been paid more and more attention.

In the related art, a large-scale wind turbine is a nonlinear system with large inertia and large time delay. At present, the unit adopts different control strategies in different operating intervals to achieve different control objectives. Generally speaking, in the operating wind speed section, the operating section of the unit is mainly divided into the minimum speed area, the maximum wind energy capture area, the transition section and the full power section. Many on-site actual operating conditions show that the generator overspeed problem is more likely to occur when the unit is in the transition period. This is because the wind speed is generally high when the unit is operating in the transition period. When encountering large turbulence, the generator speed is relatively short. If there is a large fluctuation in time and suddenly increases or decreases, it may cause the limit load of the unit to exceed the limit, affecting the safe and stable operation of the unit, or the speed of the unit exceeds a certain protection threshold, triggering generator overspeed faults and loss of power generation quantity.

At present, when the unit is running in the transition section, the constant speed control is realized through the designed PID controller or PI controller. However, at present, the main control parameters of the PID controller or PI controller are designed as fixed values. For some special working conditions (such as gusts, etc.), when the wind speed of the unit increases or decreases sharply in a short time, the control The generator needs a faster response or a slower response to control the fluctuation of the generator speed, and the above control parameters are usually designed as fixed values, which will cause the unit to respond too slowly or too fast, resulting in large generator speed fluctuations, which may trigger the unit. Overspeed faults, resulting in loss of power generation.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present disclosure is to provide a wind power generator control method, device, storage medium and electronic device, so as to solve the above technical problems at least to a certain extent.

According to a first aspect of the embodiments of the present disclosure, there is provided a wind turbine control method, the method comprising:

When it is determined that the generator is in a specified operating state, acquiring generator speed data of the generator;

Based on the generator rotational speed data, determine whether the rotational speed change of the generator satisfies a preset condition;

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

Optionally, in one embodiment, the adjusting the proportional gain coefficient of the controller of the generator to the target proportional gain coefficient includes:

Determine the target coefficient;

determining the target proportional gain coefficient based on the proportional gain coefficient and the target coefficient;

Wherein, the target proportional gain coefficient and the proportional gain coefficient have a linear relationship.

Optionally, in an embodiment, the determining the target proportional gain coefficient based on the proportional gain coefficient and the target coefficient includes:

The target proportional gain coefficient K _p is determined based on the following formula:

K _p =K _p0 (1+a);

Wherein, K _p0 represents the proportional gain coefficient, a represents the target coefficient, and 0<a<0.1.

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

calculating the average generator speed and average output power of the generator within a preset time period;

When the average generator rotational speed is greater than or equal to a first specified rotational speed, and the average output power is less than or equal to a specified power, determining that the generator is in the specified operating state;

Wherein, the first specified rotational speed is the product value of the maximum rotational speed of the generator and the rotational speed coefficient of the generator, and the rotational speed coefficient is 0.85 to 0.95;

The specified power is the difference between the rated power of the generator minus a power margin, and the power margin is 20-80 kW.

Optionally, in one embodiment, the acquiring generator speed data of the generator 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 determining, based on the generator speed data, whether the change in the speed of the generator satisfies a preset condition includes:

calculating a rotational speed difference between the rotational speed of the first generator and the rotational speed of the second generator;

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

Optionally, in one embodiment, the acquiring generator speed data of the generator includes:

acquiring multiple generator rotational speeds of the generator within a preset time period, where the preset time period includes the current moment;

The determining, based on the generator speed data, whether the change in the speed of the generator satisfies a preset condition includes:

calculating an 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 rotational speed of the generator corresponding to the current moment is greater than or equal to a second specified rotational speed, it is determined that the variation of the rotational speed of the generator satisfies the preset condition; wherein the second specified rotational speed The rotational speed is 1.03-1.08 times the maximum rotational speed of the generator.

Optionally, in one embodiment, 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 of the rotational speed of the generator satisfies the preset condition, the proportional gain coefficient of the torque controller of the generator is adjusted to the target proportional gain coefficient.

According to a second aspect of the embodiments of the present disclosure, there is provided a wind turbine control device, comprising:

a data acquisition module, configured to acquire generator speed data of the generator when it is determined that the generator is in a specified operating state;

a rotational speed judging module for judging whether the change in rotational speed of the generator satisfies a preset condition based on the rotational speed data of the generator;

The control and adjustment module is configured to adjust the proportional gain coefficient of the controller of the generator to the target proportional gain coefficient if the judgment result of the rotational speed judgment module is yes.

According to a third aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements the wind turbine control method described in any of the foregoing embodiments.

According to a fourth aspect of the embodiments of the present disclosure, there is provided an electronic device, comprising:

a memory on which a computer program is stored;

The processor is configured to implement the wind turbine control method described in any of the foregoing embodiments when executing the computer program.

The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

In the embodiment of the present disclosure, when it is determined that the wind turbine is in a specified operating state, the generator rotational speed data of the generator is obtained; based on the generator rotational speed data, it is determined whether the change in the rotational speed of the generator satisfies a preset condition; , the proportional gain coefficient of the controller of the generator is adjusted to the target proportional gain coefficient. In this way, the direct measurement of the wind speed can be avoided, and the wind speed can be indirectly measured by detecting the generator speed to determine the change of the generator speed. When the sudden change of the wind speed is indirectly measured, that is, when the change of the generator speed meets the preset conditions, the proportional gain of the controller is controlled and adjusted. coefficient to the target proportional gain coefficient, so that under some special working conditions (such as gusts, etc.), when the wind speed of the unit increases or decreases sharply in a short period of time, the controller can be adjusted by adjusting the control parameters. Faster response, that is, matching the control parameters with the change of wind speed, can effectively reduce the excessive fluctuation of the generator speed, improve the operation stability of the unit, and avoid the loss of power generation caused by the triggering of the overspeed fault of the unit.

Description of drawings

Figure 1 shows a schematic diagram of a wind turbine operating interval;

Fig. 2 shows the control block diagram of the wind turbine in the related art;

FIG. 3 shows a flowchart of a wind turbine control method in an exemplary embodiment of the present disclosure;

FIG. 4 shows a block diagram of a wind turbine control in an exemplary embodiment of the present disclosure;

FIG. 5 shows a schematic diagram of a wind turbine control device according to an exemplary embodiment of the present disclosure;

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be embodied in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example 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.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repeated descriptions will be omitted. Some of the block diagrams shown in the figures are functional entities that do not necessarily necessarily correspond to physically or logically separate entities.

Modern large-scale wind turbines generally use variable speed and pitch control mode. In the operating wind speed range (cut-in wind speed to cut-out wind speed range), it is usually divided into 4 different operating ranges, and different operating ranges use different control strategy to achieve different control objectives, as shown in Figure 1, zone I: minimum speed zone, torque control (PI or PID), the speed is stable at the set minimum speed; zone II: maximum wind energy capture zone, tracking optimal Blade tip speed ratio to achieve maximum capture of wind energy; Zone III: transition section, torque control (PI or PID), the set speed is the maximum running speed of the unit; Zone IV: full engine section, pitch control (PI or PID), general Constant power operation.

When the unit is running in the transition section, the torque control method is adopted, which is generally realized by a PI controller or a PID controller. The rated speed of the generator, that is, the given speed, is used as the reference speed to detect the deviation between the actual speed and the reference speed of the unit. To adjust the torque demand of the unit, the basic control block diagram is shown in Figure 2.

The control parameters of the PI controller or PID controller usually include proportional gain coefficient, integral gain coefficient and differential gain coefficient. Generally speaking, when designing the controller, the above three control parameters are determined according to the system output response characteristics and system stability characteristics to ensure the stability of the unit speed. However, it should be pointed out that, in general, for the same model, the above control parameters remain unchanged. The same type of wind turbines may be installed in different terrain conditions, or operate in environments with different working conditions. When certain locations are due to terrain reasons, the wind speed and wind direction change frequently, especially under strong wind conditions. , When the wind speed or wind direction changes suddenly, the speed of the generator will suddenly increase, which may lead to over-speed faults and loss of power generation. This is because the above-mentioned control parameters are designed to be fixed values, resulting in the response of the unit being too slow or too fast, for example, a sudden increase in the speed of the generator due to large fluctuations in the speed of the generator.

In order to at least partially solve the above problems, the present exemplary embodiment provides a wind turbine control method, as shown in FIG. 3 , the method includes the following steps:

Step S101: When it is determined that the generator is in a specified operating state, acquire generator speed data of the generator.

Exemplarily, the specified operating state is, for example, the operating state of the transition section, and the set rotational speed is usually the maximum operating rotational speed of the unit. When it is determined that the generator is in the operating state of the transition section, the generator rotational speed data may be obtained.

Step S102: Based on the generator rotational speed data, determine whether the rotational speed change of the generator satisfies a preset condition.

Exemplarily, the fluctuation of the rotational speed of the generator indirectly reflects the change of the wind speed. For example, the sudden change of the wind speed usually leads to the change of the rotational speed of the generator. Therefore, in this embodiment, the rotational speed of the generator is detected to determine whether the change of the rotational speed of the generator satisfies a preset condition to indirectly determine Whether there is a sudden change in wind speed.

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

Exemplarily, the controller may be a PID controller or a PI controller. When it is determined that the change in the rotational speed of the generator satisfies a preset condition, it is determined that a sudden change in wind speed is encountered. The coefficient (the integral and differential gain coefficients can remain unchanged) is adjusted to the target proportional gain coefficient, which can improve the response time of the controller to achieve the purpose of controlling the fluctuation of the generator speed. The control logic of the scheme for adjusting the proportional gain coefficient of the controller in this embodiment is shown in FIG. 4 .

The solution of the embodiment of the present disclosure can avoid direct measurement of the wind speed, and indirectly measure the sudden change of the wind speed by detecting the generator speed to determine the change of the generator speed. The proportional gain coefficient of the controller reaches the target proportional gain coefficient, so that under some special working conditions (such as gusts or large turbulence, etc.), when the wind speed of the unit increases or decreases sharply in a short time, the control The adjustment of parameters enables the controller to respond faster, for example, that the control parameters match the change of wind speed, which can effectively reduce the excessive fluctuation of the generator speed, improve the operating stability of the unit, and avoid triggering the power generation caused by the over-speed fault of the unit. loss, etc.

In addition, generally speaking, the anemometer is installed behind the impeller, which is affected by the turbulence of the impeller, and the wind speed detection is not accurate. 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 be avoided. Reduce costs by using anemometers.

Optionally, in one embodiment, adjusting the proportional gain coefficient of the controller of the generator to the target proportional gain coefficient in step S103 includes: determining a target coefficient; based on the proportional gain coefficient and the target coefficient , and determine the target proportional gain coefficient; wherein, the target proportional gain coefficient and the proportional gain coefficient have a linear relationship.

Exemplarily, the target coefficient may be determined based on the variation of the rotational speed of the generator, such as an increment, but is not limited thereto.

Specifically, in an embodiment, the determining the target proportional gain coefficient based on the proportional gain coefficient and the target coefficient includes: determining the target proportional gain coefficient K _p based on the following formula:

K _p =K _p0 (1+a);

Wherein, K _p0 represents the proportional gain coefficient, a represents the target coefficient, and 0<a<0.1.

In this embodiment, the value of the target coefficient a is limited to the above range, which can prevent a large jump when the proportional gain coefficient of the controller is adjusted, thereby further effectively reducing the excessive fluctuation of the generator speed and improving the stability of the unit operation. sex.

Optionally, in one embodiment, determining that the generator is in a specified operating state in step S101 includes: calculating an average generator speed and an average output power of the generator within a preset time period; When the rotational speed is greater than or equal to the first specified rotational speed, and the average output power is less than or equal to the specified power, it is determined that the generator is in the specified operating state; wherein, the first specified rotational speed is the maximum rotational speed of the generator The product value of the generator speed coefficient, the value of the speed coefficient is 0.85 to 0.95; the specified power is the difference between the rated power of the generator minus the power margin, and the value of the power margin It is 20～80kW.

Exemplarily, the preset duration may be 1 min, but is not limited thereto. The judgment to determine that the generator is in the specified operating state, that is, the operating state of the transition section, can generally be determined by the following formula:

Among them, ω is the average generator speed of the generator in the preset time period, that is, the average value of the generator speed at each moment in the preset time period, and p is the average output power of the generator in the preset time period. The average value of the output power at each moment, ω _max is the maximum speed of the generator operation; γ is the generator speed coefficient, generally ranging from 0.85 to 0.95; p ₀ is the rated power of the generator, in kW; δ is the power margin degree, the value ranges from 20 to 80kW.

Through the above method, it can be accurately determined that the generator is in the specified running state, that is, the running state of the transition section, and the control process of this embodiment is started only when it is determined to be in the specified running state, which can improve the accuracy of the running control of the generator in the transition section.

Optionally, in one embodiment, acquiring the generator speed data of the generator in step S101 includes: acquiring the first generator speed ω(t) of the generator at the current moment, and the The second generator speed ω(t-1) of the generator. The determining whether the change in the rotational speed of the generator satisfies a preset condition based on the rotational speed data of the generator includes: calculating a rotational speed difference ω' between the rotational speed of the first generator and the rotational speed of the second generator; When the rotational speed difference is greater than zero, and the rotational speed of the first generator is greater than or equal to the second specified rotational speed _ω0 , it is determined that the change in rotational speed of the generator satisfies the preset condition; wherein, the second specified rotational speed ω ₀ is 1.03-1.08 times the maximum rotational speed ω _max of the generator, that is, ω ₀ =b*ω _max , and b takes a value of 1.03-1.08.

Exemplarily, when ω'=ω(t)-ω(t-1)>0, and ω(t)≧ω ₀ , the change of the rotational speed of the generator satisfies the preset condition.

Optionally, in another embodiment, acquiring the generator speed data of the generator in step S101 includes: acquiring multiple generator speeds of the generator within a preset time period, the preset time period including the current time. Correspondingly, in step S102, based on the generator rotational speed data, judging whether the rotational speed change of the generator satisfies a preset condition includes: calculating the average rate of change of the rotational speeds of the multiple generators; when the average rate of change is greater than When the rotational speed of the generator corresponding to the current moment is greater than or equal to the second specified rotational speed ω ₀ , it is determined that the change in the rotational speed of the generator satisfies the preset condition.

Exemplarily, calculating the average rate of change Δω of the rotational speeds of the multiple generators may be determined by the following formula:

Among them, ω(t _i ) represents the generator speed corresponding to the ith moment in a preset period, such as 1 minute, ω(t _i +1) represents the generator speed corresponding to the moment adjacent to the ith moment, i= 1, 2, ..., N is a total of N moments.

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

Step i): judging whether the generator is in a yaw state.

Specifically, the wind turbine requires the wind rotor to be always in the windward state during operation. In the windward state, the rotational speed of the wind rotor can be very high, and the power generation efficiency can be very high. Since the wind speed is dynamic, the rotational speed of the wind rotor will be When it is fast and slow, when the rotor speed is too fast, it will cause the wind rotor to appear in a non-windward state, which is called a yaw state. In this embodiment, it can be determined whether the wind turbine is in a yaw state. The specific judgment method can be understood with reference to the prior art, which is not limited and will not be repeated here.

Step ii): when the generator is not in a yaw state and the change in the rotational speed of the generator satisfies the preset condition, adjust the proportional gain coefficient of the torque controller of the generator to the target ratio gain factor.

That is, the proportional gain coefficient of the torque controller of the generator is adjusted to the target proportional gain coefficient only when it is determined that the generator is not in the yaw state and the speed change of the generator satisfies the preset condition. Since the yaw state may bring about fluctuations in the rotational speed of the generator, the solution of this embodiment needs to eliminate the influence of this situation. Therefore, this operating condition is excluded to make the control and adjustment of the wind turbine more accurate. Avoid misadjustment.

Embodiments of the present disclosure further provide a wind turbine control device. As shown in FIG. 5 , the wind turbine control device may include:

a data acquisition module 501, configured to acquire generator speed data of the generator when it is determined that the generator is in a specified operating state;

a rotational speed judgment module 502, configured to judge whether the change of the rotational speed of the generator satisfies a preset condition based on the rotational speed data of the generator;

The control and adjustment module 503 is configured to adjust the proportional gain coefficient of the controller of the generator to the target proportional gain coefficient if the judgment result of the rotational speed judgment module is yes.

The solution of the embodiment of the present disclosure can avoid direct measurement of the wind speed, and indirectly measure the sudden change of the wind speed by detecting the generator speed to determine the change of the generator speed. The proportional gain coefficient of the controller reaches the target proportional gain coefficient, so that under some special working conditions (such as gusts or large turbulence, etc.), when the wind speed of the unit increases or decreases sharply in a short time, the control The adjustment of the parameters enables the controller to respond faster, for example, that the control parameters match the change of wind speed, which can effectively reduce the excessive fluctuation of the generator speed, improve the operation stability of the unit, and avoid triggering the power generation caused by the overspeed fault of the unit. losses, etc.

Optionally, in one embodiment, the control and adjustment module 503 is configured to: determine a target coefficient; determine the target proportional gain coefficient based on the proportional gain coefficient and the target coefficient; wherein the target The proportional gain coefficient has a linear relationship with the proportional gain coefficient.

Optionally, in an embodiment, the control and adjustment module 503 is configured to determine the target proportional gain coefficient K _p based on the following formula:

K _p =K _p0 (1+a);

Wherein, K _p0 represents the proportional gain coefficient, a represents the target coefficient, and 0<a<0.1.

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; when the average generator speed is greater than or equal to When the first specified rotational speed and the average output power is less than or equal to the specified power, it is determined that the generator is in the specified operating state; wherein, the first specified rotational speed is the maximum rotational speed of the generator and the rotational speed of the generator The value of the product of the coefficients, the value of the speed coefficient is 0.85 to 0.95; the specified power is the difference between the rated power of the generator minus the power margin, and the value of the power margin is 20 to 80kW .

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 generator speed of the generator at the previous moment. second generator speed of the machine. The rotational speed judging module 502 judges, based on the generator rotational speed data, whether the change in rotational speed of the generator satisfies a preset condition, including: calculating a rotational speed difference between the rotational speed of the first generator and the rotational speed of the second generator ; when the rotational speed difference is greater than zero and the rotational speed of the first generator is greater than or equal to a second specified rotational speed, determine that the change in rotational speed of the generator satisfies the preset condition; wherein, the second specified rotational speed It is 1.03 to 1.08 times the maximum rotational speed of the generator.

Optionally, in one embodiment, the data acquisition module 501 acquiring the generator rotational speed data of the generator includes: acquiring multiple generator rotational speeds of the generator within a preset period of time, the preset period of time. Including the current moment. The rotational speed determination module 502 determines whether the rotational speed change of the generator satisfies a preset condition based on the generator rotational speed data, including: calculating an average rate of change of the rotational speeds of the multiple generators; when the average rate of change is greater than When the speed of the generator corresponding to the current moment is greater than or equal to the second specified speed, it is determined that the change of the speed of the generator satisfies the preset condition; wherein, the second specified speed is the speed of the generator. 1.03 to 1.08 times the maximum speed.

Optionally, in one embodiment, the device further includes a state judgment module for judging whether the generator is in a yaw state; the control and adjustment module 503 is used for when the generator is not in a yaw state, and When the speed change of the generator satisfies the preset condition, the proportional gain coefficient of the torque controller of the generator is adjusted to the target proportional gain coefficient.

Embodiments of the present disclosure further provide a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, implements the wind turbine control method described in any of the foregoing embodiments.

In addition, another embodiment of the present disclosure further provides an electronic device, including a memory on which a computer program is stored; a processor for implementing the wind turbine control described in any of the foregoing embodiments when the computer program is executed method.

The solution of the electronic device and the storage medium in the embodiments of the present disclosure can avoid directly measuring the wind speed, and instead measure the sudden change of the wind speed indirectly by detecting the speed of the generator to determine the change of the speed of the generator. Under the preset conditions, control and adjust the proportional gain coefficient of the controller to the target proportional gain coefficient, so that under some special working conditions (such as gusts or large turbulence, etc.), the wind speed of the unit increases or decreases sharply in a short time. At this time, by adjusting the control parameters, for example, the controller can respond faster, that is, the control parameters match the change of wind speed, which can effectively reduce the excessive fluctuation of the generator speed, improve the operating stability of the unit, and avoid triggering the overspeed of the unit. Problems such as power generation loss caused by similar faults.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

In sum, other embodiments of the present disclosure will readily suggest themselves 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 the present disclosure that follow the general principles of the present disclosure and include common knowledge or techniques in the technical field not disclosed by the present disclosure . The specification and examples are to be regarded as exemplary only, with the true scope and spirit of the disclosure being indicated by the appended claims.

Claims (10)

1. A method of controlling a wind turbine, the method comprising:

when the generator is determined to be in a specified running state, acquiring generator rotating speed data of the generator;

judging whether the rotation speed change of the generator meets a preset condition or not based on the rotation speed data of the generator;

if yes, adjusting the proportional gain coefficient of the controller of the generator to a target proportional gain coefficient.

2. The method of claim 1, wherein adjusting the proportional gain factor of the controller of the generator to a target proportional gain factor comprises:

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 and the proportional gain coefficient are in a linear relationship.

3. The method of claim 2, wherein determining the target scaling gain factor based on the scaling gain factor and the target factor comprises:

determining the target proportional gain coefficient K based on the following formula_p：

K_p＝K_p0(1+a)；

Wherein, K_p0Representing the proportional gain coefficient, a representing the target coefficient, 0 < a < 0.1.

4. The method of claim 1, wherein the determining that the generator is in a specified operating state comprises:

calculating the average generator rotating speed and the average output power of the generator within a preset time length;

when the average generator rotating speed is greater than or equal to a first specified rotating speed and the average output power is less than or equal to specified power, determining that the generator is in the specified running state;

the first specified rotating speed is a product value of the maximum rotating speed of the generator and a rotating speed coefficient of the generator, and the value of the rotating speed coefficient is 0.85-0.95;

the specified power is a difference value obtained by subtracting a power margin from the rated power of the generator, and the value of the power margin is 20-80 kW.

5. The method of claim 1, wherein said obtaining generator speed data for said generator comprises:

acquiring a first generator rotating speed of the generator at the current moment and a second generator rotating speed of the generator at the last moment;

the judging whether the rotation speed change of the generator meets the preset condition or not based on the generator rotation speed data comprises the following steps:

calculating a rotational speed difference between the rotational speed of the first generator and the rotational speed of the second generator;

when the rotating speed difference value is larger than zero and the rotating speed of the first generator is larger than or equal to a second specified rotating speed, determining that the rotating speed change of the generator meets the preset condition; wherein the second specified rotating speed is 1.03-1.08 times of the maximum rotating speed of the generator.

6. The method of claim 1, wherein said obtaining generator speed data for said generator comprises:

acquiring a plurality of generator rotating speeds of the generator within a preset time period, wherein the preset time period comprises the current moment;

the judging whether the rotation speed change of the generator meets the preset condition or not based on the generator rotation speed data comprises the following steps:

calculating an average rate of change of the plurality of generator speeds;

when the average change rate is greater than zero and the rotating speed of the generator corresponding to the current moment is greater than or equal to a second specified rotating speed, determining that the rotating speed change of the generator meets the preset condition; wherein the second specified rotating speed is 1.03-1.08 times of the maximum rotating speed of the generator.

7. The method according to any one of claims 1 to 6, further comprising:

judging whether the generator is in a yawing state or not;

and when the generator is not in a yawing state and the change of the rotating speed of the generator meets the preset condition, adjusting the proportional gain coefficient of a torque controller of the generator to the target proportional gain coefficient.

8. A control device of a wind power generator is characterized in that,

the data acquisition module is used for acquiring the generator rotating speed data of the generator when the generator is determined to be in the specified running state;

the rotating speed judging module is used for judging whether the rotating speed change of the generator meets a preset condition or not based on the rotating speed data of the generator;

and the control and regulation module is used for regulating the proportional gain coefficient of the controller of the generator to a target proportional gain coefficient if the judgment result of the rotating speed judgment module is positive.

9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the wind turbine control method according to any one of claims 1 to 7.

10. An electronic device, comprising:

a memory having a computer program stored thereon;

a processor for implementing the wind turbine control method of any of claims 1 to 7 when executing the computer program.

Images