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

Abstract

The present application proposes a wind turbine yaw control method and system based on turbulence intensity and operating mode. The method includes: obtaining the turbulence intensity at the location of the wind turbine to be controlled and the operating mode of the wind turbine; determining whether to start the yaw system based on the turbulence intensity; shutting down the yaw system when the turbulence intensity is greater than the turbulence intensity threshold; when the turbulence intensity is less than or equal to the turbulence intensity threshold, if the operating mode of the wind turbine is wind turbine start-up mode or grid-connected operation mode, selecting a first yaw control strategy to perform wind turbine yaw control; if the operating mode of the wind turbine is wind-waiting mode, selecting a second yaw control strategy to perform wind turbine yaw control; wherein the operating modes of the wind turbine include wind-waiting mode, wind turbine start-up mode, and grid-connected operation mode. The technical solution proposed in the present application can effectively protect the yaw system structure in areas with high turbulence intensity and rapid wind direction changes.

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 a critical component of a wind turbine. When a wind turbine experiences a certain degree of wind direction deviation during operation, the yaw system drives the turbine to align with the wind. Whether the yaw system can align with the wind promptly affects the turbine's power generation and may increase load. Frequent yaw aligning can also reduce the system's service life. During the yaw process, the hydraulic yaw brake first releases pressure before releasing the yaw motor's electromagnetic brake. If strong turbulence occurs during this process, yaw slip is highly likely to occur, exacerbating mechanical collisions and impacts between the yaw drive structure, potentially damaging the yaw system. Current yaw control systems do not account for the effects of turbulence. When turbulence is high, initiating yaw can exacerbate nacelle vibration and easily cause nacelle slip, resulting in severe mechanical impact and damage to the yaw system's drive 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 large.

[0004] The first embodiment of the present application proposes a wind turbine yaw control method 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, shut down the yaw system.

[0008] Step 4: When the turbulence intensity is less than or equal to the turbulence intensity threshold, if the operating 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 yaw control of the wind turbine generator set; if the operating mode of the wind turbine generator set is the wind waiting mode, the second yaw control strategy is selected 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 within a second preset time period, and perform yaw control based on the average wind direction; if not, start yaw control.

[0012] Furthermore, 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 will shut down and retract the blades, and switch to the shutdown mode. Then, yaw control is performed based on the wind direction angle corresponding to the wind turbine generator set. Otherwise, the wind turbine generator set is prohibited from yaw and yaw control is ended.

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

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

[0016] The second embodiment of the present application proposes a wind turbine yaw control system based on turbulence intensity and operating 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, configured to obtain a 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, entering a third judgment module; if not, not starting 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 determine whether the turbulence intensity is less than or equal to the turbulence intensity threshold. If so, the module enters the selection and control module; otherwise, the yaw system is shut down;

[0020] The selection and control module is used to, when the turbulence intensity is less than or equal to the turbulence intensity threshold, select the first yaw control strategy to perform yaw control of the wind turbine if the operating mode of the wind turbine is the wind turbine start-up mode or the grid-connected operation mode; and select the second yaw control strategy to perform yaw control of the wind turbine if the operating mode of the wind turbine is the 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 within a second preset time period, and perform yaw control based on the average wind direction; if not, start yaw control.

[0024] Furthermore, 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 will shut down and retract the blades, and switch to the shutdown mode. Then, yaw control is performed based on the wind direction angle corresponding to the wind turbine generator set. Otherwise, the wind turbine generator set is prohibited from yaw and yaw control is ended.

[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. When the processor executes the program, the method described in the first aspect is implemented.

[0027] A fourth embodiment 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 embodiment.

[0028] The technical solutions provided by the embodiments of this application bring at least the following beneficial effects:

[0029] The present application proposes a wind turbine yaw control method and system based on turbulence intensity and operation mode, the method comprising: step 1: determining whether the wind turbine is in shutdown mode, if so, performing a fault reset operation, starting the wind turbine, and then proceeding to step 2, otherwise directly proceeding to step 2; step 2: obtaining the wind direction angle corresponding to the wind turbine, and determining whether the wind direction angle is greater than a wind direction angle threshold, if so, proceeding to step 3, otherwise, not starting yaw control; step 3: obtaining the turbulence intensity at the location of the wind turbine to be controlled, and determining whether the turbulence intensity is less than or equal to the turbulence intensity threshold, if so, proceeding to 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 for 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 for 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 rapid 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 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 This is a flow chart of a wind turbine yaw control method based on turbulence intensity and operation mode according to one embodiment of the present application;

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

[0034] Figure 3 This is a first structural diagram of a wind turbine yaw control system based on turbulence intensity and operating mode according to one 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 operating mode according to an embodiment of the present application. DETAILED DESCRIPTION

[0036] The following describes in detail embodiments of the present application, examples of which 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 wind turbine yaw control method and system based on turbulence intensity and operating mode, the method comprising: step 1: determining whether the wind turbine is in a shutdown mode; if so, performing a fault reset operation and starting the wind turbine, and then proceeding to step 2; otherwise, directly proceeding to step 2; step 2: obtaining the wind direction angle corresponding to the wind turbine, and determining whether the wind direction angle is greater than a wind direction angle threshold; if so, proceeding to step 3; if not, not starting yaw control; step 3: obtaining the turbulence intensity at the location of the wind turbine to be controlled, and determining whether the turbulence intensity is less than or equal to the turbulence intensity threshold; if so, proceeding to 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 operating mode of the wind turbine is a wind turbine startup mode or a grid-connected operating mode, selecting a first yaw control strategy for yaw control of the wind turbine; if the operating mode of the wind turbine is a wind-waiting mode, selecting a second yaw control strategy for 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 rapid 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] The following describes a wind turbine yaw control method and system based on turbulence intensity and operation mode according to an embodiment of the present application with reference to the accompanying drawings.

[0039] Example 1

[0040] Figure 1 This is a flow chart of a wind turbine yaw control method based on turbulence intensity and operation mode according to one 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, shut down the yaw system.

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

[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 operating 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 yaw control of the wind turbine generator set; if the operating mode of the wind turbine generator set is the wind waiting mode, the second yaw control strategy is selected to perform yaw control of the wind turbine generator set.

[0048] In an 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 within a second preset time period, and perform yaw control based on the average wind direction; if not, start yaw control.

[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] The performing yaw control based on the average wind direction includes:

[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 will shut down and retract the blades, and switch to the shutdown mode. Then, yaw control is performed based on the wind direction angle corresponding to the wind turbine generator set. Otherwise, the wind turbine generator set is prohibited from yaw and yaw control is ended.

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

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

[0056] A shutdown instruction pulse is sent to the wind turbine generator set once per second within a 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 an 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 yaw control the wind turbine generator set based on the first yaw control strategy.

[0060] It should be noted that after the yaw system is started, 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 the shutdown command is stopped. The unit operation mode is automatically switched 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 unit.

[0062] The wind turbine generator set yaw control method 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 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 aircraft 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 so, go to step 04;

[0066] 04: Determine whether the unit operation mode is greater than 11. If not, start yaw and gradually reduce the wind direction angle. 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 100s average wind direction is greater than 50°. If so, send a shutdown command pulse (1 time / s, lasting 10s). 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 the unit operation mode is shutdown mode, 11 represents the unit operation mode 11 is wind waiting mode, 16 represents the unit operation mode is fan start mode, and 20 represents the unit operation mode is 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 rapid 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] Example 2

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

[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 determine whether the wind direction angle is greater than a wind direction angle threshold. If so, the process proceeds to the third judgment module 300. If not, the yaw control is not initiated.

[0075] The third judgment module 300 is used to 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, the selection and control module 400 is entered; otherwise, the yaw system is shut down;

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

[0077] The first yaw control strategy includes:

[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 within a second preset time period, and perform yaw control based on the average wind direction; if not, start yaw control.

[0080] The performing yaw control based on the average wind direction includes:

[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 will shut down and retract the blades, and switch to the shutdown mode. Then, yaw control is performed based on the wind direction angle corresponding to the wind turbine generator set. Otherwise, the wind turbine generator set is prohibited from yaw and yaw control is ended.

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

[0083] A shutdown instruction pulse is sent to the wind turbine generator set once per second within a 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 yaw control 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 rapid 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] Example 3

[0088] To implement the above embodiments, the present disclosure further proposes 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 embodiment is implemented.

[0089] Example 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" 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 can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of 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, segment 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 be performed out of 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 those skilled in the art 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, shut down the yaw system. Step 4: When the turbulence intensity is less than or equal to the turbulence intensity threshold, if the operating mode of the wind turbine generator set is the wind turbine startup 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 operating 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; The first yaw control strategy includes: Obtaining an average wind speed of the wind turbine generator set within a first preset time period; determining whether the average wind speed is greater than a wind speed threshold; if so, obtaining an average wind direction of the wind turbine generator set within a second preset time period, and performing yaw control based on the average wind direction; if not, initiating yaw control; 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 once per second within a third preset time period. When the wind turbine generator set receives the command, it shuts down and retracts the blades, switches to a 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 yaw control is terminated.

2. The method according to claim 1, wherein The second yaw control strategy includes: 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 yaw control the wind turbine generator set based on the first yaw control strategy.

3. A wind turbine yaw control system based on turbulence intensity and operating 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, configured to obtain a 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, entering a third judgment module; if not, not starting yaw control; The third judgment module is used to 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, the module enters the selection and control module; otherwise, the yaw system is shut down; a selection and control module, configured to, when the turbulence intensity is less than or equal to a turbulence intensity threshold, select a first yaw control strategy to perform yaw control on the wind turbine if the operating mode of the wind turbine is a wind turbine startup mode or a grid-connected operating mode, and select a second yaw control strategy to perform yaw control on the wind turbine if the operating mode of the wind turbine is a wind-waiting mode; The first yaw control strategy includes: 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 within a second preset time period, and perform yaw control based on the average wind direction; if not, start yaw control. 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 once per second within a third preset time period. When the wind turbine generator set receives the command, it shuts down and retracts the blades, switches to a 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 yaw control is terminated.

4. 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 2 is implemented.

5. 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 2 is implemented.

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