Wind turbine generator yaw control method and system based on turbulence intensity and operation mode

Abstract

The invention provides a wind turbine generator yaw control method and system based on turbulence intensity and an operation mode. The method comprises the steps that the turbulence intensity of the position where a to-be-controlled wind turbine generator is located and the operation mode of the wind turbine generator are obtained; determining whether to start a yaw system based on the turbulence intensity; when the turbulence intensity is larger than the turbulence intensity threshold value, the yaw system is closed, and when the turbulence intensity is smaller than or equal to the turbulence intensity threshold value, if the operation mode of the wind generating set is a fan starting mode or a grid-connected operation mode, a first yaw control strategy is selected to conduct yaw control over the wind generating set, if the operation mode of the wind generating set is the standby mode, selecting a second yaw control strategy to perform yaw control on the wind generating set; wherein the operation modes of the wind generating set comprise a wind waiting mode, a fan starting mode and a grid-connected operation mode. According to the technical scheme provided by the invention, the yaw system structure can be effectively protected in an area with high turbulence intensity and fast wind direction change.

Description

Technical Field

[0001] The present application relates to the field of wind power generation, and in particular to a method and system for controlling the yaw of a wind turbine based on turbulence intensity and operating mode. Background Art

[0002] The yaw system is an important component of a wind turbine. When there is a certain wind direction deviation during the operation of the wind turbine, the yaw system will drive the wind turbine to face the wind. Whether the yaw system can face the wind in time will affect the power generation of the wind turbine and may cause an increase in the load. Frequent facing of the yaw system will affect the service life of the yaw system. At the same time, the yaw process of the yaw system of the wind turbine is that the hydraulic yaw brake will first release the pressure, and then release the electromagnetic brake of the yaw motor. At this time, if strong turbulence is encountered, yaw slip failure is very likely to occur, aggravating the mechanical collision and impact between the yaw transmission structure, thereby damaging the yaw system structure. At present, the influence of turbulence is not considered in yaw control. When the turbulence is large, starting the yaw will aggravate the vibration of the cabin, and it is easy to cause the cabin to slip, causing severe mechanical shock and damaging the yaw system transmission structure. Summary of the invention

[0003] The present application provides a yaw control method and system for a wind turbine generator set based on turbulence intensity, so as to at least solve the technical problem of damaging the transmission structure of the yaw system when the turbulence is relatively large.

[0004] The first embodiment of the present application proposes a yaw control method for a wind turbine based on turbulence intensity and operation mode, the method comprising:

[0005] Step 1: Determine whether the wind turbine generator set is in shutdown mode. If so, perform a fault reset operation and start the wind turbine generator set, and then proceed to step 2. Otherwise, directly proceed to step 2.

[0006] Step 2: Obtain the wind direction angle corresponding to the wind turbine generator set, and determine whether the wind direction angle is greater than a wind direction angle threshold. If so, proceed to step 3; if not, do not start yaw control;

[0007] Step 3: Obtain the turbulence intensity at the location of the wind turbine to be controlled, and determine whether the turbulence intensity is less than or equal to the turbulence intensity threshold. If so, proceed to step 4; otherwise, turn off the yaw system.

[0008] Step 4: When the turbulence intensity is less than or equal to the turbulence intensity threshold, if the operation mode of the wind turbine generator set is the wind turbine start-up mode or the grid-connected operation mode, select the first yaw control strategy to perform yaw control of the wind turbine generator set; if the operation mode of the wind turbine generator set is the wind waiting mode, select the second yaw control strategy to perform yaw control of the wind turbine generator set.

[0009] Preferably, the first yaw control strategy includes:

[0010] Obtaining an average wind speed of the wind turbine generator set within a first preset time period;

[0011] Determine whether the average wind speed is greater than a wind speed threshold; if so, obtain the average wind direction of the wind turbine generator set in a second preset time period, and perform yaw control based on the average wind direction; if not, start yaw control of the wind.

[0012] Further, the performing yaw control based on the average wind direction includes:

[0013] Determine whether the average wind direction is greater than the average wind direction threshold. If so, send a shutdown command pulse to the wind turbine generator set. When the wind turbine generator set receives the command, it shuts down and retracts the blades, switches to the shutdown mode, and then performs yaw control based on the wind direction angle corresponding to the wind turbine generator set. Otherwise, the wind turbine generator set is prohibited from yaw and the yaw control is terminated.

[0014] Furthermore, sending a shutdown command pulse to the wind turbine generator set includes:

[0015] A shutdown command pulse is sent to the wind generator set once per second within the third preset time period.

[0016] The second aspect of the present application provides a wind turbine yaw control system based on turbulence intensity and operation mode, including:

[0017] A first judgment module is used to judge whether the wind turbine generator set is in a shutdown mode. If so, a fault reset operation is performed and the wind turbine generator set is started, and then the second judgment module is entered; otherwise, the second judgment module is directly entered;

[0018] A second judgment module is used to obtain the wind direction angle corresponding to the wind turbine generator set, and judge whether the wind direction angle is greater than a wind direction angle threshold. If so, enter the third judgment module; if not, do not start the yaw control;

[0019] The third judgment module is used to obtain the turbulence intensity at the location of the wind turbine to be controlled, and judge whether the turbulence intensity is less than or equal to the turbulence intensity threshold. If so, enter the selection and control module, otherwise shut down the yaw system;

[0020] A selection and control module is used to select a first yaw control strategy to perform yaw control of the wind turbine when the turbulence intensity is less than or equal to a turbulence intensity threshold, if the operation mode of the wind turbine is a wind turbine start-up mode or a grid-connected operation mode, and to select a second yaw control strategy to perform yaw control of the wind turbine when the operation mode of the wind turbine is a wind-waiting mode.

[0021] Preferably, the first yaw control strategy includes:

[0022] Obtaining an average wind speed of the wind turbine generator set within a first preset time period;

[0023] Determine whether the average wind speed is greater than a wind speed threshold; if so, obtain the average wind direction of the wind turbine generator set in a second preset time period, and perform yaw control based on the average wind direction; if not, start yaw control of the wind.

[0024] Further, the performing yaw control based on the average wind direction includes:

[0025] Determine whether the average wind direction is greater than the average wind direction threshold. If so, send a shutdown command pulse to the wind turbine generator set. When the wind turbine generator set receives the command, it shuts down and retracts the blades, switches to the shutdown mode, and then performs yaw control based on the wind direction angle corresponding to the wind turbine generator set. Otherwise, the wind turbine generator set is prohibited from yaw and the yaw control is terminated.

[0026] The third aspect of the present application provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method described in the first aspect is implemented.

[0027] A fourth aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in the first aspect of the present application.

[0028] The technical solution provided by the embodiments of the present application brings at least the following beneficial effects:

[0029] The present application proposes a yaw control method and system for a wind turbine generator set based on turbulence intensity and operation mode, the method comprising: step 1: determining whether the wind turbine generator set is in a shutdown mode, if so, performing a fault reset operation, starting the wind turbine generator set, and then entering step 2, otherwise directly entering step 2; step 2: obtaining the wind direction angle corresponding to the wind turbine generator set, determining whether the wind direction angle is greater than a wind direction angle threshold, if so, entering step 3, if not, not starting the yaw control; step 3: obtaining the turbulence intensity at the location of the wind turbine generator set to be controlled, determining whether the turbulence intensity is less than or equal to the turbulence intensity threshold, if so, entering step 4, otherwise shutting down the yaw system; step 4: when the turbulence intensity is less than or equal to the turbulence intensity threshold, if the operation mode of the wind turbine generator set is a wind turbine start-up mode or a grid-connected operation mode, selecting a first yaw control strategy to perform yaw control of the wind turbine generator set, and if the operation mode of the wind turbine generator set is a wind waiting mode, selecting a second yaw control strategy to perform yaw control of the wind turbine generator set;. The technical solution proposed in this application is suitable for areas such as mountain wind farms with high turbulence intensity and fast wind direction changes. It can reduce unnecessary yaw, reduce the number of yaws, prevent yaw slip, and reduce mechanical impact and collision while ensuring the normal operation of the yaw system, thereby effectively protecting the yaw system structure.

[0030] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0032] Figure 1 A flowchart of a wind turbine yaw control method based on turbulence intensity and operation mode according to an embodiment of the present application;

[0033] Figure 2 A detailed flow chart of a wind turbine yaw control method based on turbulence intensity and operation mode according to an embodiment of the present application;

[0034] Figure 3 A first structural diagram of a wind turbine yaw control system based on turbulence intensity and operation mode provided according to an embodiment of the present application;

[0035] Figure 4 This is a second structural diagram of a wind turbine yaw control system based on turbulence intensity and operation mode provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0036] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0037] The present application proposes a method and system for yaw control of a wind turbine based on turbulence intensity and operation mode, the method comprising: step 1: judging whether the wind turbine is in shutdown mode, if so, performing a fault reset operation, starting the wind turbine, and then entering step 2, otherwise directly entering step 2; step 2: obtaining the wind direction angle corresponding to the wind turbine, judging whether the wind direction angle is greater than a wind direction angle threshold, if so, entering step 3, if not, not starting yaw control; step 3: obtaining the turbulence intensity at the location of the wind turbine to be controlled, judging whether the turbulence intensity is less than or equal to the turbulence intensity threshold, if so, entering step 4, otherwise shutting down the yaw system; step 4: when the turbulence intensity is less than or equal to the turbulence intensity threshold, if the operation mode of the wind turbine is a wind turbine start-up mode or a grid-connected operation mode, selecting a first yaw control strategy to perform yaw control of the wind turbine, and if the operation mode of the wind turbine is a wind waiting mode, selecting a second yaw control strategy to perform yaw control of the wind turbine;. The technical solution proposed in this application is suitable for areas such as mountain wind farms with high turbulence intensity and fast wind direction changes. It can reduce unnecessary yaw, reduce the number of yaws, prevent yaw slip, and reduce mechanical impact and collision while ensuring the normal operation of the yaw system, thereby effectively protecting the yaw system structure.

[0038] A method and system for controlling the yaw of a wind turbine based on turbulence intensity and operating mode according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0039] Embodiment 1

[0040] Figure 1 Flow chart of a wind turbine yaw control method based on turbulence intensity and operation mode according to an embodiment of the present application, as shown in FIG. Figure 1 As shown, the method includes:

[0041] Step 1: Determine whether the wind turbine generator set is in shutdown mode. If so, perform a fault reset operation and start the wind turbine generator set, and then proceed to step 2. Otherwise, directly proceed to step 2.

[0042] Step 2: Obtain the wind direction angle corresponding to the wind turbine generator set, and determine whether the wind direction angle is greater than a wind direction angle threshold. If so, proceed to step 3; if not, do not start yaw control;

[0043] It should be noted that the wind direction angle threshold may be 30°.

[0044] Step 3: Obtain the turbulence intensity at the location of the wind turbine to be controlled, and determine whether the turbulence intensity is less than or equal to the turbulence intensity threshold. If so, proceed to step 4; otherwise, turn off the yaw system.

[0045] It should be noted that the turbulence intensity may be a 1-min turbulence intensity, which is equal to the ratio of a 1-min wind speed standard deviation to a 1-min wind speed average value.

[0046] It should be noted that the turbulence intensity threshold may be 0.3.

[0047] Step 4: When the turbulence intensity is less than or equal to the turbulence intensity threshold, if the operation mode of the wind turbine generator set is the wind turbine start-up mode or the grid-connected operation mode, the first yaw control strategy is selected to perform the yaw control of the wind turbine generator set; if the operation mode of the wind turbine generator set is the wind waiting mode, the second yaw control strategy is selected to perform the yaw control of the wind turbine generator set.

[0048] In the embodiment of the present disclosure, the first yaw control strategy includes:

[0049] Obtaining an average wind speed of the wind turbine generator set within a first preset time period;

[0050] Determine whether the average wind speed is greater than a wind speed threshold; if so, obtain the average wind direction of the wind turbine generator set in a second preset time period, and perform yaw control based on the average wind direction; if not, start yaw control of the wind.

[0051] It should be noted that the wind speed threshold may be 8 m / s, the first preset period may be 10 s, and the second preset period may be 100 s.

[0052] Wherein, the performing yaw control based on the average wind direction comprises:

[0053] Determine whether the average wind direction is greater than the average wind direction threshold. If so, send a shutdown command pulse to the wind turbine generator set. When the wind turbine generator set receives the command, it shuts down and retracts the blades, switches to the shutdown mode, and then performs yaw control based on the wind direction angle corresponding to the wind turbine generator set. Otherwise, the wind turbine generator set is prohibited from yaw and the yaw control is terminated.

[0054] It should be noted that the average wind direction threshold may be 50°;

[0055] The step of sending a shutdown command pulse to the wind turbine generator set comprises:

[0056] A shutdown command pulse is sent to the wind generator set once per second within the third preset time period.

[0057] It should be noted that the purpose of sending the shutdown command pulse is to ensure that the unit can receive the shutdown command and stop, that is, stop first and then yaw.

[0058] In the embodiment of the present disclosure, the second yaw control strategy includes:

[0059] Start the yaw system, and when the wind direction angle corresponding to the wind turbine generator set is equal to the wind direction angle threshold, continuously send a shutdown command to the wind turbine generator set until the wind direction angle corresponding to the wind turbine generator set is equal to 0°, and switch the operation mode of the wind turbine generator set to the wind turbine start-up mode, and then perform yaw control on the wind turbine generator set based on the first yaw control strategy.

[0060] It should be noted that after starting the yaw system, the wind direction angle gradually decreases. When the wind direction angle decreases to 30°, the shutdown command is continuously sent until the wind direction angle decreases to 0°, and then the shutdown command is stopped. The unit operation mode automatically switches to the fan start-up mode. The purpose of continuously sending the shutdown command is to keep the unit operation mode in the wind-waiting mode, and the blades are not opened, that is, yaw without opening the blades. If the shutdown command is not sent, the blades will be opened when the wind direction angle decreases to 30°. Yaw with the blades opened will aggravate the vibration of the cabin and easily damage the structure.

[0061] It should be noted that the turbulence intensity threshold, wind speed threshold, and average wind direction threshold mentioned in this embodiment can be optimized and adjusted according to the actual situation of the on-site units.

[0062] The yaw control method of a wind turbine generator set based on turbulence intensity proposed in the above embodiment is described in detail below. Figure 2 As shown:

[0063] 01: Determine whether the unit mode is greater than 6. If not, it means that the unit is in manual shutdown or fault shutdown state. Reset the fault code and start the fan. If yes, go to step 02;

[0064] 02: Determine whether the wind direction angle is greater than 30°. If not, the yaw start condition is not met and the vehicle does not yaw. If so, proceed to step 03.

[0065] 03: Determine whether the 1-minute turbulence intensity is less than or equal to 0.3. If not, the turbulence is too large, yaw is prohibited, and the yaw system is turned off. If yes, go to step 04;

[0066] 04: Determine whether the unit operation mode is greater than 11. If not, start yaw and the wind direction angle gradually decreases. When the wind direction angle decreases to 30°, continue to send the shutdown command until the wind direction angle decreases to 0°, then stop sending the shutdown command and the unit operation mode automatically switches to 16. If yes, go to step 05;

[0067] 05: Determine whether the 10s average wind speed is greater than 8m / s. If not, start yaw to wind. If yes, go to step 06.

[0068] 06: Determine whether the average wind direction for 100 seconds is greater than 50°. If so, send a shutdown command pulse (1 time / s, lasting 10 seconds). At this time, the unit stops and retracts the propellers. The unit operation mode automatically switches to 6 and returns to step 01. If not, yaw is prohibited and yaw ends.

[0069] Among them, 6 represents that the unit operation mode is the shutdown mode, 11 represents that the unit operation mode is the wind standby mode, 16 represents that the unit operation mode is the fan start mode, and 20 represents that the unit operation mode is the grid-connected operation mode.

[0070] In summary, the wind turbine yaw control method based on turbulence intensity and operating mode proposed in this embodiment makes up for the shortcomings of the original yaw control logic of the unit, making it more suitable for areas such as mountain wind farms with high turbulence intensity and fast wind direction changes. It can reduce unnecessary yaw, reduce the number of yaws, prevent yaw slip, and reduce mechanical impact and collision while ensuring the normal operation of the yaw system, thereby effectively protecting the yaw system structure.

[0071] Embodiment 2

[0072] Figure 3 FIG. 1 is a structural diagram of a wind turbine yaw control system based on turbulence intensity and operation mode according to an embodiment of the present application, such as Figure 3 As shown, the system comprises:

[0073] The first judgment module 100 is used to judge whether the wind turbine generator set is in the shutdown mode. If so, a fault reset operation is performed and the wind turbine generator set is started, and then the second judgment module 200 is entered. Otherwise, the second judgment module 200 is directly entered.

[0074] The second judgment module 200 is used to obtain the wind direction angle corresponding to the wind turbine generator set, and judge whether the wind direction angle is greater than a wind direction angle threshold. If so, enter the third judgment module 300, if not, do not start the yaw control;

[0075] The third judgment module 300 is used to obtain the turbulence intensity at the location of the wind turbine to be controlled, and judge whether the turbulence intensity is less than or equal to the turbulence intensity threshold. If so, enter the selection and control module 400, otherwise turn off the yaw system;

[0076] The selection and control module 400 is used for, when the turbulence intensity is less than or equal to a turbulence intensity threshold, if the operation mode of the wind turbine generator set is a wind turbine start-up mode or a grid-connected operation mode, selecting a first yaw control strategy to perform yaw control of the wind turbine generator set; if the operation mode of the wind turbine generator set is a wind-waiting mode, selecting a second yaw control strategy to perform yaw control of the wind turbine generator set.

[0077] The first yaw control strategy comprises:

[0078] Obtaining an average wind speed of the wind turbine generator set within a first preset time period;

[0079] Determine whether the average wind speed is greater than a wind speed threshold; if so, obtain the average wind direction of the wind turbine generator set in a second preset time period, and perform yaw control based on the average wind direction; if not, start yaw control of the wind.

[0080] Wherein, the performing yaw control based on the average wind direction comprises:

[0081] Determine whether the average wind direction is greater than the average wind direction threshold. If so, send a shutdown command pulse to the wind turbine generator set. When the wind turbine generator set receives the command, it shuts down and retracts the blades, switches to the shutdown mode, and then performs yaw control based on the wind direction angle corresponding to the wind turbine generator set. Otherwise, the wind turbine generator set is prohibited from yaw and the yaw control is terminated.

[0082] It should be noted that the sending of a shutdown command pulse to the wind turbine generator set includes:

[0083] A shutdown command pulse is sent to the wind generator set once per second within the third preset time period.

[0084] Wherein, the second yaw control strategy includes:

[0085] Start the yaw system, and when the wind direction angle corresponding to the wind turbine generator set is equal to the wind direction angle threshold, continuously send a shutdown command to the wind turbine generator set until the wind direction angle corresponding to the wind turbine generator set is equal to 0°, and switch the operation mode of the wind turbine generator set to the wind turbine start-up mode, and then perform yaw control on the wind turbine generator set based on the first yaw control strategy.

[0086] In summary, the wind turbine yaw control system based on turbulence intensity and operating mode proposed in this embodiment is suitable for areas such as mountain wind farms with high turbulence intensity and fast wind direction changes. It can reduce unnecessary yaw, reduce the number of yaws, prevent yaw slip, and reduce mechanical impact and collision while ensuring the normal operation of the yaw system, thereby effectively protecting the yaw system structure.

[0087] Embodiment 3

[0088] In order to implement the above embodiments, the present disclosure further proposes an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method described in Embodiment 1 is implemented.

[0089] Embodiment 4

[0090] In order to implement the above embodiments, the present disclosure further proposes a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the method described in the first embodiment is implemented.

[0091] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0092] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0093] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A wind turbine yaw control method based on turbulence intensity and operation mode, characterized in that: The method comprises: Step 1: Determine whether the wind turbine generator set is in shutdown mode. If so, perform a fault reset operation and start the wind turbine generator set, and then proceed to step 2. Otherwise, directly proceed to step 2. Step 2: Obtain the wind direction angle corresponding to the wind turbine generator set, and determine whether the wind direction angle is greater than a wind direction angle threshold. If so, proceed to step 3; if not, do not start yaw control; Step 3: Obtain the turbulence intensity at the location of the wind turbine to be controlled, and determine whether the turbulence intensity is less than or equal to the turbulence intensity threshold. If so, proceed to step 4; otherwise, turn off the yaw system. Step 4: When the turbulence intensity is less than or equal to the turbulence intensity threshold, if the operation mode of the wind turbine generator set is the wind turbine start-up mode or the grid-connected operation mode, the first yaw control strategy is selected to perform the yaw control of the wind turbine generator set; if the operation mode of the wind turbine generator set is the wind waiting mode, the second yaw control strategy is selected to perform the yaw control of the wind turbine generator set.

2. The method according to claim 3, characterized in that The first yaw control strategy comprises: Obtaining an average wind speed of the wind turbine generator set within a first preset time period; Determine whether the average wind speed is greater than a wind speed threshold; if so, obtain the average wind direction of the wind turbine generator set in a second preset time period, and perform yaw control based on the average wind direction; if not, start yaw control of the wind.

3. The method according to claim 2, characterized in that The performing yaw control based on the average wind direction comprises: Determine whether the average wind direction is greater than the average wind direction threshold. If so, send a shutdown command pulse to the wind turbine generator set. When the wind turbine generator set receives the command, it shuts down and retracts the blades, switches to the shutdown mode, and then performs yaw control based on the wind direction angle corresponding to the wind turbine generator set. Otherwise, the wind turbine generator set is prohibited from yaw and the yaw control is terminated.

4. The method according to claim 3, characterized in that The step of sending a shutdown command pulse to the wind turbine generator set comprises: A shutdown command pulse is sent to the wind generator set once per second within the third preset time period.

5. The method according to claim 4, characterized in that The second yaw control strategy comprises: Start the yaw system, and when the wind direction angle corresponding to the wind turbine generator set is equal to the wind direction angle threshold, continuously send a shutdown command to the wind turbine generator set until the wind direction angle corresponding to the wind turbine generator set is equal to 0°, and switch the operation mode of the wind turbine generator set to the wind turbine start-up mode, and then perform yaw control on the wind turbine generator set based on the first yaw control strategy.

6. A wind turbine yaw control system based on turbulence intensity and operation mode, characterized in that: The system comprises: A first judgment module is used to judge whether the wind turbine generator set is in a shutdown mode. If so, a fault reset operation is performed and the wind turbine generator set is started, and then the second judgment module is entered; otherwise, the second judgment module is directly entered; A second judgment module is used to obtain the wind direction angle corresponding to the wind turbine generator set, and judge whether the wind direction angle is greater than a wind direction angle threshold. If so, enter the third judgment module; if not, do not start the yaw control; The third judgment module is used to obtain the turbulence intensity at the location of the wind turbine to be controlled, and judge whether the turbulence intensity is less than or equal to the turbulence intensity threshold. If so, enter the selection and control module, otherwise shut down the yaw system; A selection and control module is used to select a first yaw control strategy to perform yaw control of the wind turbine when the turbulence intensity is less than or equal to a turbulence intensity threshold, if the operation mode of the wind turbine is a wind turbine start-up mode or a grid-connected operation mode, and to select a second yaw control strategy to perform yaw control of the wind turbine when the operation mode of the wind turbine is a wind-waiting mode.

7. The system according to claim 6, characterized in that The first yaw control strategy comprises: Obtaining an average wind speed of the wind turbine generator set within a first preset time period; Determine whether the average wind speed is greater than a wind speed threshold; if so, obtain the average wind direction of the wind turbine generator set in a second preset time period, and perform yaw control based on the average wind direction; if not, start yaw control of the wind.

8. The system according to claim 7, characterized in that The performing yaw control based on the average wind direction comprises: Determine whether the average wind direction is greater than the average wind direction threshold. If so, send a shutdown command pulse to the wind turbine generator set. When the wind turbine generator set receives the command, it shuts down and retracts the blades, switches to the shutdown mode, and then performs yaw control based on the wind direction angle corresponding to the wind turbine generator set. Otherwise, the wind turbine generator set is prohibited from yaw and the yaw control is terminated.

9. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method according to any one of claims 1 to 5 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 1 to 5 is implemented.

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