Method, device and apparatus for controlling fan, and computer readable storage medium

Abstract

The application discloses a kind of fan control method, device, equipment and computer readable storage medium, the fan includes front fan and rear fan, the fan specification of the front fan is less than the fan specification of the rear fan, this method includes: obtaining the area wind speed of the area where fan is located;If the area wind speed is greater than the first preset wind speed threshold, then according to the area wind speed, adjust the front blade angle of the front fan and adjust the rear blade angle of the rear fan.The application aims to avoid the blade load of fan exceeding limit, improve the control safety of fan.

Description

Technical Field

[0001] This invention relates to the field of wind turbine technology, and in particular to wind turbine control methods, devices, equipment, and computer-readable storage media. Background Technology

[0002] With the development of economy and technology, the application of wind turbines is becoming increasingly widespread. When the wind speed in the area where the wind turbine is located changes, it is necessary to twist the blades to change the angle of attack, thereby changing the aerodynamic force and effectively controlling the blade load. However, when the wind turbine blades are too large, due to the wind turbine's heavy structure, high inertia, and slow response, the blade angle adjustment is too slow when encountering strong winds, which can easily lead to the blade load exceeding the limit or even damage to the blades, resulting in lower control safety of the wind turbine.

[0003] It should be noted that the above content is only used to help understand the technical problem solved by the present invention, and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main objective of this invention is to provide a wind turbine control method, a wind turbine, and a computer-readable storage medium, which aims to prevent the wind turbine blade load from exceeding the limit and improve the control safety of the wind turbine.

[0005] To achieve the above objectives, the present invention provides a method for controlling a fan, the fan comprising a front fan and a rear fan, wherein the specifications of the front fan are smaller than those of the rear fan, and the method for controlling the fan comprises the following steps:

[0006] Obtain the regional wind speed in the area where the wind turbine is located;

[0007] If the wind speed in the area is greater than a first preset wind speed threshold, then the angle of the front blade of the front fan and the angle of the rear blade of the rear fan are adjusted according to the wind speed in the area.

[0008] Optionally, the steps of adjusting the angle of the front blade of the front fan and the angle of the rear blade of the rear fan according to the regional wind speed include:

[0009] Obtain the current angle of the front blades of the front fan;

[0010] Adjust the angle of the front blade according to the wind speed in the area and the current angle of the front blade;

[0011] The angle of the rear blade is adjusted according to the adjusted angle of the front blade.

[0012] Optionally, the step of adjusting the angle of the leading blade based on the regional wind speed and the current angle of the leading blade includes:

[0013] The target blade angle of the front wind turbine is determined based on the regional wind speed and the current blade angle of the front wind turbine.

[0014] The angle of the front blade of the front fan is adjusted from the current angle of the front blade to the target angle of the front blade, and the change in regional wind speed in the area where the fan is located is continuously detected.

[0015] Based on the change in wind speed in the area, determine the adjustment angle value of the forward target blade angle;

[0016] Adjust the angle of the front blade according to the adjustment angle value.

[0017] Optionally, the step of determining the target blade angle of the front wind turbine based on the regional wind speed and the current blade angle of the front blade includes:

[0018] If the wind speed in the region is less than the second preset wind speed threshold, then a first correlation relationship between the wind speed in the region and the forward target blade angle is obtained, and the forward target blade angle is determined based on the first correlation relationship, the wind speed in the region and the forward current blade angle, wherein the second preset wind speed threshold is greater than the first preset wind speed threshold, and the larger the wind speed in the region in the first correlation relationship, the larger the forward target blade angle.

[0019] If the regional wind speed is greater than or equal to the second preset wind speed threshold, then a second correlation relationship between the regional wind speed and the forward target blade angle is obtained, and the forward target blade angle is determined based on the second correlation relationship, the regional wind speed and the forward current blade angle, wherein the greater the regional wind speed in the second correlation relationship, the smaller the forward target blade angle.

[0020] Optionally, the step of adjusting the angle of the rear blade according to the adjusted angle of the front blade includes:

[0021] Obtain the current rear blade angle of the rear fan;

[0022] Based on the difference between the front blade angle and the rear blade angle, the blade adjustment direction and blade adjustment value of the rear blade angle are determined.

[0023] The angle of the rear blade is adjusted according to the blade adjustment direction and the blade adjustment value.

[0024] Optionally, the step of adjusting the angle of the rear blade according to the adjusted angle of the front blade further includes:

[0025] Obtain a preset correlation between the angle of the front blade and the angle of the rear blade, wherein the preset correlation includes a correspondence relationship and / or a mapping relationship;

[0026] The target rear blade angle of the rear fan is determined based on the preset correlation and the front blade angle.

[0027] Adjust the rear blade angle according to the target rear blade angle.

[0028] Optionally, the control method for the fan further includes:

[0029] If the wind speed in the area is greater than a third preset wind speed threshold, then the rear fan is turned off, wherein the third preset wind speed threshold is greater than a first preset wind speed threshold.

[0030] If the wind speed in the area is less than or equal to the third preset wind speed threshold, then when the wind speed in the area is greater than the first preset wind speed threshold, the steps of adjusting the angle of the front blade of the front fan and adjusting the angle of the rear blade of the rear fan are performed according to the wind speed in the area.

[0031] Optionally, the control method for the fan further includes:

[0032] If the wind speed in the area is greater than the fourth preset wind speed threshold, then the front fan and the rear fan are turned off, wherein the fourth preset wind speed threshold is greater than the third preset wind speed threshold.

[0033] If the wind speed in the area is less than or equal to the fourth wind speed threshold, then when the wind speed in the area is greater than the third preset wind speed threshold, the step of shutting down the rear fan is executed.

[0034] Optionally, the control method for the fan further includes:

[0035] If the wind speed in the area is less than or equal to the first preset wind speed threshold, the angle of the front blade of the front fan is adjusted to the preset angle.

[0036] Adjust the angle of the rear propeller according to the preset angle.

[0037] Furthermore, in order to achieve the above objectives, the present invention also proposes a fan, the fan comprising: a memory, a processor, and a fan control program stored in the memory and executable on the processor, wherein when the fan control program is executed by the processor, it implements the steps of the fan control method as described in any of the preceding claims.

[0038] Furthermore, in order to achieve the above objectives, the present invention also proposes a computer-readable storage medium storing a fan control program thereon, wherein the fan control program, when executed by a processor, implements the steps of the fan control method as described in any of the preceding claims.

[0039] This invention proposes a control method, device, and readable storage medium for a wind turbine. This embodiment applies to a wind turbine, which includes a front-end fan and a rear-end fan. The front-end fan has a smaller blade size than the rear-end fan. The method obtains the regional wind speed of the area where the wind turbine is located. If the regional wind speed exceeds a first preset wind speed threshold, it indicates a high regional wind speed. If the blade angle of the wind turbine is not adjusted, there is a risk of the blade load exceeding the limit. Therefore, by adjusting the front blade angle of the front-end fan and the rear blade angle of the rear-end fan based on the regional wind speed, a small-bladed wind turbine is added in front of the rear-end fan (i.e., a front-end fan). Because the front-end fan has a smaller blade size, it is lightweight and has a fast response. When encountering strong winds, the blade angle of the wind turbine can respond quickly, thereby minimizing the risk of excessive blade load and optimizing the control safety of the wind turbine. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the fan structure involved in the operation of the fan control method proposed in this invention;

[0041] Figure 2 A schematic diagram of the electronic equipment structure of the hardware operating environment involved in the operation of the wind turbine control method proposed in this invention;

[0042] Figure 3 A flowchart illustrating the first embodiment of the fan control method of the present invention;

[0043] Figure 4 This is a flowchart illustrating the second embodiment of the fan control method of the present invention.

[0044] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0045] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Reference Figure 1 , Figure 1 This is a schematic diagram of the fan structure involved in an embodiment of the present invention.

[0047] like Figure 1 As shown, the fan includes: a front fan 01, a rear fan 02, a real-time sensor 03, and a controller 04. The real-time sensor 03 is configured at a preset location on the front fan 01. The preset location can be above or below the front fan 01, in front of or behind the front fan 01, or any other location of the front fan 01. It is used to sense the regional wind speed in the area where the front fan is located. The real-time sensor 03 is connected to the controller 04. The controller 04 is connected to both the front fan 01 and the rear fan 02 so that the controller 04 can adjust the blade angles of the front fan 01 and the rear fan 02 according to the regional wind speed sensed by the real-time sensor 03.

[0048] Reference Figure 2 , Figure 2 This is a schematic diagram of the electronic equipment structure of the hardware operating environment involved in the wind turbine control method in this application embodiment. For example... Figure 2 As shown, the electronic device further includes: a processor 1001, such as a central processing unit (CPU), a timer 1002, and a memory 1003. The memory 1003 can be a high-speed random access memory (RAM) or a stable non-volatile memory (NVM), such as a disk drive. Optionally, the memory 1003 can also be a storage device independent of the aforementioned processor 1001.

[0049] Those skilled in the art will understand that Figure 2 The structure shown does not constitute a limitation on the operating equipment and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0050] like Figure 2 As shown, the memory 1003, which serves as a storage medium, may include an operating system, a network communication module, and a wind turbine control program.

[0051] exist Figure 2 In the illustrated operating device, the network interface 1003 is mainly used for data communication with other devices. The processor 1001 and memory 1003 in the operating device of this invention can be located within the operating device. The operating device uses the processor 1001 to call the fan control program stored in the memory 1003 and performs the following operations:

[0052] Obtain the regional wind speed in the area where the wind turbine is located;

[0053] If the wind speed in the area is greater than a first preset wind speed threshold, then the angle of the front blade of the front fan and the angle of the rear blade of the rear fan are adjusted according to the wind speed in the area.

[0054] Furthermore, the processor 1001 can call the fan control program stored in the memory 1003 and also perform the following operations:

[0055] Obtain the current angle of the front blades of the front fan;

[0056] Adjust the angle of the front blade according to the wind speed in the area and the current angle of the front blade;

[0057] The angle of the rear blade is adjusted according to the adjusted angle of the front blade.

[0058] Furthermore, the processor 1001 can call the fan control program stored in the memory 1003, and also perform the following operations:

[0059] The target blade angle of the front wind turbine is determined based on the regional wind speed and the current blade angle of the front wind turbine.

[0060] The angle of the front blade of the front fan is adjusted from the current angle of the front blade to the target angle of the front blade, and the change in regional wind speed in the area where the fan is located is continuously detected.

[0061] Based on the change in wind speed in the area, determine the adjustment angle value of the forward target blade angle;

[0062] Adjust the angle of the front blade according to the adjustment angle value.

[0063] Furthermore, the processor 1001 can call the fan control program stored in the memory 1003, and also perform the following operations:

[0064] If the wind speed in the region is less than the second preset wind speed threshold, then a first correlation relationship between the wind speed in the region and the forward target blade angle is obtained, and the forward target blade angle is determined based on the first correlation relationship, the wind speed in the region and the forward current blade angle, wherein the second preset wind speed threshold is greater than the first preset wind speed threshold, and the larger the wind speed in the region in the first correlation relationship, the larger the forward target blade angle.

[0065] If the regional wind speed is greater than or equal to the second preset wind speed threshold, then a second correlation relationship between the regional wind speed and the forward target blade angle is obtained, and the forward target blade angle is determined based on the second correlation relationship, the regional wind speed and the forward current blade angle, wherein the greater the regional wind speed in the second correlation relationship, the smaller the forward target blade angle.

[0066] Furthermore, the processor 1001 can call the fan control program stored in the memory 1003, and also perform the following operations:

[0067] Obtain the current rear blade angle of the rear fan;

[0068] Based on the difference between the front blade angle and the rear blade angle, the blade adjustment direction and blade adjustment value of the rear blade angle are determined.

[0069] The angle of the rear blade is adjusted according to the blade adjustment direction and the blade adjustment value.

[0070] Furthermore, the processor 1001 can call the fan control program stored in the memory 1003, and also perform the following operations:

[0071] Obtain a preset correlation between the angle of the front blade and the angle of the rear blade, wherein the preset correlation includes a correspondence relationship and / or a mapping relationship;

[0072] The target rear blade angle of the rear fan is determined based on the preset correlation and the front blade angle.

[0073] Adjust the rear blade angle according to the target rear blade angle.

[0074] Furthermore, the processor 1001 can call the fan control program stored in the memory 1003, and also perform the following operations:

[0075] If the wind speed in the area is greater than a third preset wind speed threshold, then the rear fan is turned off, wherein the third preset wind speed threshold is greater than a first preset wind speed threshold.

[0076] If the wind speed in the area is less than or equal to the third preset wind speed threshold, then when the wind speed in the area is greater than the first preset wind speed threshold, the steps of adjusting the angle of the front blade of the front fan and adjusting the angle of the rear blade of the rear fan are performed according to the wind speed in the area.

[0077] Furthermore, the processor 1001 can call the fan control program stored in the memory 1003, and also perform the following operations:

[0078] If the wind speed in the area is greater than the fourth preset wind speed threshold, then the front fan and the rear fan are turned off, wherein the fourth preset wind speed threshold is greater than the third preset wind speed threshold.

[0079] If the wind speed in the area is less than or equal to the fourth wind speed threshold, then when the wind speed in the area is greater than the third preset wind speed threshold, the step of shutting down the rear fan is executed.

[0080] Furthermore, the processor 1001 can call the fan control program stored in the memory 1003, and also perform the following operations:

[0081] If the wind speed in the area is less than or equal to the first preset wind speed threshold, the angle of the front blade of the front fan is adjusted to the preset angle.

[0082] Adjust the angle of the rear propeller according to the preset angle.

[0083] Based on the hardware architecture of the aforementioned terminal, various embodiments of the wind turbine control method of the present invention are proposed.

[0084] Reference Figure 3 This invention proposes a first embodiment of a fan control method. In this embodiment, the fan includes a front fan and a rear fan, wherein the specifications of the front fan are smaller than those of the rear fan, and the fan control method includes:

[0085] Step S10: Obtain the regional wind speed in the area where the wind turbine is located;

[0086] Step S20: If the wind speed in the area is greater than the first preset wind speed threshold, then adjust the angle of the front blade of the front fan and the angle of the rear blade of the rear fan according to the wind speed in the area.

[0087] The embodiments of the present invention can be executed on a wind turbine or on the control terminal of a wind turbine. This embodiment is described using the wind turbine as an example.

[0088] In this embodiment, it should be noted that the first preset wind speed threshold is a preset critical value of the regional wind speed in the area where the wind turbine is located, indicating that the blade angle of the wind turbine needs to be adjusted. The regional wind speed can be the current wind speed in the area where the wind turbine is located, or it can be the historical wind speed in the area where the wind turbine is located. The regional wind speed can be the wind speed in the area where the front wind turbine is located, the wind speed in the area where the rear wind turbine is located, or it can be the average wind speed of the areas where the front wind turbine is located and the area where the rear wind turbine is located. The front blade angle and the rear blade angle are the blade angle parameters corresponding to the front wind turbine and the rear wind turbine, respectively.

[0089] It is understandable that when the wind speed in the area is high, the blade angle of the wind turbine may be too large or too small. If the blade angle of the wind turbine is not adjusted in time, the power generation effect of the wind turbine may be poor. Alternatively, if the blade angle adjustment is too slow, the blade load may exceed the limit or even damage the blade.

[0090] To address the aforementioned deficiencies, an external wind speed sensor is used to sense the regional wind speed in the area where the wind turbine is located, and the current blade angle of the wind turbine is obtained; it is determined whether the regional wind speed is greater than a first preset wind speed threshold; if the regional wind speed is greater than the first preset wind speed threshold, the front blade angle of the front wind turbine and the rear blade angle of the rear wind turbine are adjusted according to the regional wind speed.

[0091] Optionally, the step of determining the regional wind speed in the area where the wind turbine is located includes:

[0092] As an example, the wind speed sensor is externally mounted on the front fan, and the wind speed in the area where the front fan is located is sensed by the wind speed sensor, which is taken as the area wind speed.

[0093] As an example, the wind speed sensor is externally mounted on the rear fan, and the wind speed in the area where the rear fan is located is sensed by the wind speed sensor and used as the area wind speed.

[0094] As an example, the wind speed sensor includes a first wind speed sensor and a second wind speed sensor. The first wind speed sensor is externally mounted on the front fan, and the second wind speed sensor is externally mounted on the rear fan. The first wind speed sensor senses the wind speed in the area where the front fan is located, and the second wind speed sensor senses the wind speed in the area where the rear fan is located. The average wind speed between the front and rear wind speeds is taken as the area wind speed.

[0095] Optionally, step S20 includes:

[0096] Step S21: Obtain the current angle of the front blade of the front fan;

[0097] Step S22: Adjust the angle of the front blade according to the wind speed in the area and the current angle of the front blade;

[0098] Step S23: Adjust the angle of the rear blade according to the adjusted angle of the front blade.

[0099] In this embodiment, it should be noted that the current blade angle of the front wind turbine is the specific value of the current blade angle of the front wind turbine.

[0100] It is understandable that, since the front fan is smaller in size, it has a faster response time and therefore responds to regional wind speeds faster than the rear fan. Thus, the front blade angle of the front fan is adjusted first, and after the front blade angle is determined, the rear blade angle of the rear fan is determined based on the front blade angle, in order to improve the response speed of the rear fan blade adjustment.

[0101] As an example, step S21 includes: determining the front blade angle adjustment amount of the front wind turbine based on the regional wind speed and the current front blade angle, and adjusting the front blade angle based on the front blade angle adjustment amount.

[0102] As an example, step S21 includes: determining the target blade angle of the front wind turbine based on the regional wind speed and the current blade angle of the front wind turbine, and adjusting the front wind turbine from the current blade angle to the target blade angle.

[0103] As an example, step S22 includes: obtaining the current rear blade angle of the rear fan, determining the rear blade angle adjustment amount of the rear fan based on the front blade angle and the current rear blade angle, and adjusting the rear blade angle based on the rear blade angle adjustment amount.

[0104] As an example, step S22 includes: determining the target rear blade angle of the rear fan based on the front blade angle, and adjusting the rear blade angle of the rear fan to the target rear blade angle.

[0105] By determining the angle of the rear blades of the rear fan based on the angle of the front blades of the front fan, the response speed of the rear fan blade adjustment is improved. This avoids the technical defect that the blade load may exceed the limit or even damage the blades due to the slow response adjustment of the rear fan blade angle when encountering strong winds, which would lead to low control safety of the rear fan.

[0106] Optionally, step S21 includes:

[0107] Step A10: Determine the target blade angle of the front wind turbine based on the regional wind speed and the current blade angle of the front wind turbine.

[0108] Step A20: Adjust the angle of the front blade of the front fan from the current angle of the front blade to the target angle of the front blade, and determine the change in regional wind speed in the area where the fan is located.

[0109] Step A30: Determine the adjustment angle value of the forward target blade angle based on the change in wind speed in the area;

[0110] Step A40: Adjust the angle of the front blade according to the adjustment angle value.

[0111] It is understandable that in reality, due to changes in natural wind speed and air flow, the wind speed in the area will change at any time. If the blade angle of the wind turbine is adjusted only once based on the wind speed at a certain moment, the blade angle adjustment may be too slow when the wind speed in the area suddenly increases or decreases.

[0112] As an example, step A10 includes: obtaining a preset front blade configuration file, wherein the preset front blade configuration file includes the correspondence between the regional wind speed of the area where the wind turbine is located and the current front blade angle of the front wind turbine and the target front blade angle of the front wind turbine; querying the preset front blade configuration file according to the regional wind speed and the current front blade angle to obtain the target front blade angle of the front wind turbine corresponding to the regional wind speed and the current front blade angle.

[0113] As an example, step A10 includes: obtaining a preset front blade angle model; and obtaining the front target blade angle corresponding to the front wind turbine by inputting the regional wind speed and the current front blade angle into the preset front blade angle model.

[0114] After adjusting the angle of the front blades of the front fan from the current angle to the target angle, that is, after coarsely adjusting the angle of the front blades of the front fan, the wind speed sensor is used to continuously detect the change in regional wind speed in the area where the fan is located, or the change in regional wind speed in the area where the fan is located is detected periodically, to monitor the change in regional wind speed. Based on the change in regional wind speed, the adjustment angle value of the target front blade angle is determined. Based on the adjustment angle value, the front blade angle is adjusted, that is, the front blade angle of the front fan is finely adjusted.

[0115] Optionally, the step of determining the adjustment angle value of the forward target blade angle based on the regional wind speed change includes:

[0116] As an example, the correlation between the change in regional wind speed and the adjustment angle value of the leading blade angle is obtained. The correlation can be a mapping relationship or a correspondence relationship. Based on the correlation and the change in regional wind speed, the adjustment angle value of the leading target blade angle is determined.

[0117] As an example, a functional relationship is obtained between the change in regional wind speed and the adjustment angle value of the leading blade angle. By substituting the change in regional wind speed into the functional relationship, the adjustment angle value of the leading target blade angle is obtained.

[0118] By adjusting the angle of the front blades of the front-mounted fan in two stages, the angle of the front blades can be corrected in a timely manner when there are significant changes in the regional wind speed, thereby improving the control safety of the front-mounted fan.

[0119] Optionally, step A10 includes:

[0120] If the wind speed in the region is less than a second preset wind speed threshold, and if so, a first correlation is obtained between the wind speed in the region and the forward target blade angle. Based on this first correlation, the wind speed in the region, and the current forward blade angle, the forward target blade angle is determined. The second preset wind speed threshold is greater than the first preset wind speed threshold. In the first correlation, the greater the wind speed in the region, the larger the forward target blade angle. If the wind speed in the region is greater than or equal to the second preset wind speed threshold, a second correlation is obtained between the wind speed in the region and the forward target blade angle. Based on this second correlation, the wind speed in the region, and the current forward blade angle, the forward target blade angle is determined. In the second correlation, the greater the wind speed in the region, the smaller the forward target blade angle.

[0121] In this embodiment, it should be noted that the second preset wind speed threshold is a critical value of the wind speed in the area where the wind speed may cause damage to the blades of the wind turbine.

[0122] Therefore, when the regional wind speed does not reach the critical value that would damage the wind turbine blades, the higher the regional wind speed, the larger the forward target blade angle, thereby increasing the power generation of the wind turbine; when the regional wind speed reaches the critical value that would damage the wind turbine blades, the power generation of the wind turbine is appropriately reduced, thereby avoiding damage to the wind turbine blades, and thus increasing the power generation of the wind turbine while ensuring the safety of the wind turbine blades.

[0123] In this embodiment, during the operation of the wind turbine, the regional wind speed of the area where the wind turbine is located is obtained. If the regional wind speed is greater than a first preset wind speed threshold, it indicates that the regional wind speed in the area where the wind turbine is located is relatively high. If the blade angle of the wind turbine is not adjusted, there is a risk that the wind turbine blade load will exceed the limit. Therefore, the front blade angle of the front wind turbine and the rear blade angle of the rear wind turbine are adjusted according to the regional wind speed. The wind turbine includes a front wind turbine and a rear wind turbine. The specifications of the front wind turbine are smaller than those of the rear wind turbine. The wind turbine with a large blade is a wind turbine with a small blade installed in front of the rear wind turbine, which is the front wind turbine. Because the specifications of the front wind turbine are smaller, it has the characteristics of light structure and fast response. When encountering strong winds, the blade angle of the wind turbine can respond quickly, thereby avoiding excessive wind turbine blade load to the greatest extent and optimizing the control safety of the wind turbine.

[0124] The above-described embodiments of adjusting the fan can be freely combined, provided that the technology allows it.

[0125] Reference Figure 4 Based on the above embodiments, a second embodiment of the multi-fan control method is proposed. In this embodiment, step S22 includes:

[0126] Step B10: Obtain the current rear blade angle of the rear fan;

[0127] Step B20: Determine the blade adjustment direction and blade adjustment value of the rear blade angle based on the difference between the front blade angle and the rear current blade angle.

[0128] Step B30: Adjust the angle of the rear blade according to the blade adjustment direction and the blade adjustment value.

[0129] As an example, the current rear blade angle of the rear wind turbine is obtained; the difference between the front blade angle and the current rear blade angle is determined, wherein the difference includes the magnitude of the difference and the absolute value of the difference; the absolute value of the difference is used as the blade adjustment value of the rear blade angle, and the magnitude of the difference is used as the blade adjustment direction of the rear blade angle; the rear blade angle is adjusted according to the blade adjustment direction and the blade adjustment value.

[0130] As an example, the rear blade angle is adjusted to the angle value corresponding to the front blade angle.

[0131] By directly using the angle value corresponding to the angle of the front blade as the angle value corresponding to the angle of the rear blade of the rear fan, the response speed of the rear fan is improved.

[0132] Optionally, step S22 includes:

[0133] Step C10: Obtain a preset correlation between the front blade angle and the rear blade angle, wherein the preset correlation includes a correspondence relationship and / or a mapping relationship;

[0134] Step C20: Determine the target rear blade angle of the rear fan based on the preset correlation and the front blade angle;

[0135] Step C30: Adjust the rear blade angle according to the target rear blade angle.

[0136] It is understandable that when the front fan has a significant impact on the wake of the rear fan, directly using the angle value corresponding to the front blade angle as the angle value corresponding to the rear blade angle of the rear fan may result in the rear fan blade angle being too large or too small due to the failure to consider the impact of the wake on the rear fan, thus leading to a lower control safety of the rear fan.

[0137] To address the aforementioned deficiencies, as an example, a preset correlation relationship is obtained between the angle of the front blade and the angle of the rear blade, wherein the preset correlation relationship includes a correspondence relationship and / or a mapping relationship; based on the preset correlation relationship and the angle of the front blade, a target rear blade angle for the rear wind turbine is determined; and the rear blade angle is adjusted to the target rear blade angle.

[0138] As an example, a preset correlation relationship is obtained between the front blade angle and the rear blade angle, wherein the preset correlation relationship includes a correspondence relationship and / or a mapping relationship, and the preset correlation relationship is the relationship between the front blade angle and the angle difference between the front blade angle and the rear blade angle; the angle difference between the front blade angle and the rear blade angle is determined according to the preset correlation relationship and the front blade angle; the rear blade angle is adjusted according to the angle difference.

[0139] Optionally, the control method for the fan further includes:

[0140] If the wind speed in the area is greater than a third preset wind speed threshold, then the rear fan is turned off, wherein the third preset wind speed threshold is greater than a first preset wind speed threshold.

[0141] If the wind speed in the area is less than or equal to the third preset wind speed threshold, then when the wind speed in the area is greater than the first preset wind speed threshold, the steps of adjusting the angle of the front blade of the front fan and adjusting the angle of the rear blade of the rear fan are performed according to the wind speed in the area.

[0142] Understandably, the rear-mounted fan is larger in size, thus posing a greater risk of blade damage.

[0143] In this embodiment, it should be noted that the third preset wind speed threshold is a critical value for determining the wind speed in areas with a high risk of damage to the blades of the rear-mounted wind turbine. The third preset wind speed threshold is greater than the second preset wind speed threshold.

[0144] Determine whether the wind speed in the area is greater than a third preset wind speed threshold. If the wind speed in the area is greater than the third preset wind speed threshold, turn off the rear fan. If the wind speed in the area is not greater than the third preset wind speed threshold, return to the execution step: determine whether the wind speed in the area is greater than the third preset wind speed threshold, until the wind speed in the area is greater than the third preset wind speed threshold.

[0145] As an example, the step of determining whether the regional wind speed is greater than the third preset wind speed threshold is performed after the step of adjusting the angle of the front blade of the front fan and the angle of the rear blade of the rear fan according to the regional wind speed if the regional wind speed is greater than the first preset wind speed threshold.

[0146] As an example, the step of determining whether the regional wind speed is greater than the third preset wind speed threshold is performed before the step of adjusting the front blade angle of the front fan and the rear blade angle of the rear fan based on the regional wind speed if the regional wind speed is greater than the first preset wind speed threshold.

[0147] When the regional wind speed reaches the critical value of the area where there is a high risk of damage to the blades of the rear-mounted fan, the rear-mounted fan is shut down in time to avoid the risk of damage to the blades and thus improve the control safety of the rear-mounted fan.

[0148] Optionally, the control method for the fan further includes:

[0149] If the wind speed in the area is not greater than the first preset wind speed threshold, the angle of the front blade of the front fan is adjusted to the preset angle; and the angle of the rear blade of the rear fan is adjusted according to the preset angle.

[0150] In this embodiment, it should be noted that the preset angle is a fixed angle for setting the fan when the regional wind speed is low.

[0151] If the wind speed in the area is not greater than the first preset wind speed threshold, then obtain the wind direction in the area corresponding to the wind speed in the area; determine the preset angle according to the wind direction in the area; adjust the angle of the front blade of the front fan to the preset angle; and adjust the angle of the rear blade of the rear fan according to the preset angle.

[0152] When the wind speed in the area is low, a uniform blade angle is set to avoid frequent changes in blade angle, which would otherwise lead to poor power generation stability of the wind turbine and improve the control stability of the wind turbine.

[0153] Optionally, the control method for the fan further includes:

[0154] If the wind speed in the area is greater than the fourth preset wind speed threshold, then the front fan and the rear fan are turned off, wherein the fourth preset wind speed threshold is greater than the third preset wind speed threshold.

[0155] If the wind speed in the area is less than or equal to the fourth wind speed threshold, then when the wind speed in the area is greater than the third preset wind speed threshold, the step of shutting down the rear fan is executed.

[0156] Understandably, when the regional wind speed is high enough, even if the front wind turbine is small, there is still a risk of damage to the blades of the front wind turbine.

[0157] In this embodiment, it should be noted that the fourth preset wind speed threshold is a critical value for determining the wind speed in areas where the risk of damage to the blades of the front-end fan is relatively high.

[0158] Determine whether the wind speed in the area is greater than the fourth preset wind speed threshold. If the wind speed in the area is greater than the fourth preset wind speed threshold, then turn off the front fan and the rear fan. If the wind speed in the area is not greater than the fourth preset wind speed threshold, then return to the execution step: determine whether the wind speed in the area is greater than the fourth preset wind speed threshold, until the wind speed in the area is greater than the fourth preset wind speed threshold.

[0159] When the regional wind speed reaches the critical value of the area where there is a high risk of damage to the blades of the front fan, the front fan and the rear fan should be shut down in time to avoid the risk of damage to the blades of the front fan and the rear fan, thereby improving the control safety of the front fan and the rear fan.

[0160] Furthermore, embodiments of the present invention also propose a computer-readable storage medium storing a control program for a wind turbine. When the control program for the wind turbine is executed by a processor, it implements the relevant steps of any embodiment of the wind turbine control method described above.

[0161] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0162] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0163] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, fan, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0164] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A method for controlling a fan, characterized in that, The fan includes a front fan and a rear fan, wherein the specifications of the front fan are smaller than those of the rear fan, and the control method of the fan includes the following steps: Obtain the regional wind speed in the area where the wind turbine is located; If the wind speed in the area is greater than the first preset wind speed threshold, then the angle of the front blade of the front fan and the angle of the rear blade of the rear fan are adjusted according to the wind speed in the area. The steps of adjusting the angle of the front blade of the front fan and the angle of the rear blade of the rear fan according to the regional wind speed include: Obtain the current angle of the front blades of the front fan; Adjust the angle of the front blade according to the wind speed in the area and the current angle of the front blade; Adjust the rear blade angle according to the adjusted front blade angle; The step of adjusting the angle of the leading blade based on the regional wind speed and the current angle of the leading blade includes: The target blade angle of the front wind turbine is determined based on the regional wind speed and the current blade angle of the front wind turbine. The angle of the front blade of the front fan is adjusted from the current angle of the front blade to the target angle of the front blade, and the change in regional wind speed in the area where the fan is located is continuously detected. Based on the change in wind speed in the area, determine the adjustment angle value of the forward target blade angle; Adjust the angle of the front blade according to the aforementioned adjustment angle value; The step of determining the target blade angle of the front wind turbine based on the regional wind speed and the current blade angle of the front blade includes: If the wind speed in the region is less than the second preset wind speed threshold, then a first correlation relationship between the wind speed in the region and the forward target blade angle is obtained, and the forward target blade angle is determined based on the first correlation relationship, the wind speed in the region and the forward current blade angle, wherein the second preset wind speed threshold is greater than the first preset wind speed threshold, and the larger the wind speed in the region in the first correlation relationship, the larger the forward target blade angle. If the regional wind speed is greater than or equal to the second preset wind speed threshold, then a second correlation relationship between the regional wind speed and the forward target blade angle is obtained, and the forward target blade angle is determined based on the second correlation relationship, the regional wind speed and the forward current blade angle, wherein the greater the regional wind speed in the second correlation relationship, the smaller the forward target blade angle.

2. The fan control method as described in claim 1, characterized in that, The step of adjusting the rear blade angle based on the adjusted front blade angle includes: Obtain the current rear blade angle of the rear fan; Based on the difference between the front blade angle and the rear blade angle, the blade adjustment direction and blade adjustment value of the rear blade angle are determined. The angle of the rear blade is adjusted according to the blade adjustment direction and the blade adjustment value.

3. The fan control method as described in claim 1, characterized in that, The step of adjusting the rear blade angle based on the adjusted front blade angle includes: Obtain a preset correlation between the angle of the front blade and the angle of the rear blade, wherein the preset correlation includes a correspondence relationship and / or a mapping relationship; The target rear blade angle of the rear fan is determined based on the preset correlation and the front blade angle. Adjust the rear blade angle according to the target rear blade angle.

4. The fan control method as described in claim 1, characterized in that, The control method for the fan also includes: If the wind speed in the area is greater than a third preset wind speed threshold, then the rear fan is turned off, wherein the third preset wind speed threshold is greater than the first preset wind speed threshold. If the wind speed in the area is less than or equal to the third preset wind speed threshold, then when the wind speed in the area is greater than the first preset wind speed threshold, the steps of adjusting the angle of the front blade of the front fan and adjusting the angle of the rear blade of the rear fan are performed according to the wind speed in the area.

5. The fan control method as described in claim 4, characterized in that, The control method for the fan also includes: If the wind speed in the area is greater than the fourth preset wind speed threshold, then the front fan and the rear fan are turned off, wherein the fourth preset wind speed threshold is greater than the third preset wind speed threshold. If the wind speed in the area is less than or equal to the fourth preset wind speed threshold, then when the wind speed in the area is greater than the third preset wind speed threshold, the step of shutting down the rear fan is executed.

6. The fan control method according to any one of claims 1 to 5, characterized in that, The control method for the fan also includes: If the wind speed in the area is less than or equal to the first preset wind speed threshold, the angle of the front blade of the front fan is adjusted to the preset angle. Adjust the angle of the rear propeller according to the preset angle.

7. A control device for a fan employing the fan control method as described in any one of claims 1 to 6, characterized in that, The fan includes a front fan and a rear fan, wherein the fan size of the front fan is smaller than that of the rear fan, and the control device for the fan includes: The acquisition module is used to acquire the regional wind speed in the area where the wind turbine is located; An adjustment module is used to adjust the angle of the front blade of the front fan and the angle of the rear blade of the rear fan according to the wind speed in the area if the wind speed in the area is greater than a first preset wind speed threshold.

8. A control device for a fan, characterized in that, The control device for the wind turbine includes: a memory, a processor, and a wind turbine control program stored in the memory and executable on the processor. When the wind turbine control program is executed by the processor, it implements the steps of the wind turbine control method as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a control program for the wind turbine, which, when executed by a processor, implements the steps of the wind turbine control method as described in any one of claims 1 to 6.

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