A wind power blade and its design method, device, electronic device and storage medium

Abstract

The present application discloses a wind turbine blade and its design method, device, electronic device, and storage medium. Specifically, the method is to generate the ply data of the wind turbine blade based on the design specifications; calculate the ply data to obtain the minimum area and material corresponding to the blade ultimate safety factor; if there are multiple minimum areas, adjust the ply data of all the minimum areas so that only the blade ultimate safety factor of the middle minimum area is 1; calculate the load of the middle minimum area; calculate other structural safety factors based on the load; if the other structural safety factors meet the safety conditions, output the ply data, and if not, return to the step of adjusting the ply data of all the minimum areas. This solution ensures that the safety of the entire blade is guaranteed above the safety level by determining the minimum area with the lowest safety and making the minimum area above the safety level, so that users can design safe wind turbine blades based on this solution.

Description

Technical Field

[0001] The present application relates to the technical field of new energy equipment, and more specifically, to a wind turbine blade and its design method, device, electronic device, and storage medium. Background Art

[0002] With the upscaling of wind turbines, wind turbine blades are getting longer and the cost is getting higher. To reduce the blade cost, the safety margin of the blade has been continuously reduced. To cope with extreme wind conditions, corresponding control strategies are generally preset to reduce the blade load under extreme wind conditions to ensure the safe operation of the wind turbine.

[0003] These control strategies are mainly obtained through simulation analysis based on standard working conditions and are used to ensure that the safety factor of the blade is greater than 1. However, due to the difference between the actual wind conditions and the standard wind conditions, and the uncertainty of the incoming flow wind conditions, the blade response during actual operation will be different, resulting in excessive strain of the blade, blade damage or even fracture, thus endangering the safe operation of the wind turbine. Summary of the Invention

[0004] In view of this, the present application provides a wind turbine blade and its design method, device, electronic device, and storage medium for designing a safe wind turbine blade to improve the safe operation of the wind turbine.

[0005] To achieve the above object, the following solutions are proposed:

[0006] A design method applied to an electronic device for designing a safe wind turbine blade, the design method including the steps of:

[0007] Generating ply data of the wind turbine blade based on design specifications;

[0008] Calculating the ply data to obtain the minimum area and material corresponding to the blade ultimate safety factor;

[0009] If there are multiple minimum areas, adjusting the ply data of all the minimum areas so that only the blade ultimate safety factor of the middle minimum area is 1;

[0010] Calculating the load of the middle minimum area;

[0011] Calculating other structural safety factors according to the load;

[0012] If the other structural safety factors meet the safety conditions, outputting the ply data; if not, returning to the step of adjusting the ply data of all the minimum areas.

[0013] Optionally, the adjusting the ply data of all the minimum areas includes the steps of:

[0014] Perform ply adjustment processing on the ply data of the middle smallest region;

[0015] Perform ply enhancement processing on the ply data of the remaining smallest regions.

[0016] Optionally, the other structural safety factors include fatigue safety factors and / or buckling safety factors.

[0017] Optionally, the safety condition is that the structural safety factor is greater than 1.

[0018] A design device, applied to an electronic device, for designing a safe wind turbine blade, the design device includes:

[0019] A data generation module, configured to generate ply data of a wind turbine blade based on design specifications;

[0020] A first calculation module, configured to calculate the ply data to obtain the smallest region and material corresponding to the blade ultimate safety factor;

[0021] A data adjustment module, configured to, if there are multiple smallest regions, adjust the ply data of all the smallest regions so that only the blade ultimate safety factor of the middle smallest region is 1;

[0022] A second calculation module, configured to calculate the load of the middle smallest region;

[0023] A third calculation module, configured to calculate other structural safety factors according to the load;

[0024] An output control module, configured to, if the other structural safety factors meet the safety condition, output the ply data, and if not, return to the step of adjusting the ply data of all the smallest regions.

[0025] Optionally, the data adjustment module includes:

[0026] A first adjustment unit, configured to perform ply adjustment processing on the ply data of the middle smallest region;

[0027] A second adjustment unit, configured to perform ply enhancement processing on the ply data of the remaining smallest regions.

[0028] Optionally, the other structural safety factors include fatigue safety factors and / or buckling safety factors.

[0029] Optionally, the safety condition is that the structural safety factor is greater than 1.

[0030] An electronic device includes at least one processor and a memory connected to the processor, wherein:

[0031] The memory is used to store computer programs or instructions;

[0032] The processor is used to execute the computer programs or instructions so that the electronic device implements the design method as described above.

[0033] A storage medium is applied to an electronic device. The storage medium carries one or more computer programs, and the one or more computer programs can be executed by the electronic device so that the electronic device implements the storage medium as described above.

[0034] A wind power blade includes a blade body. There is a minimum area corresponding to a blade ultimate safety factor on the blade body. A strain sensor is arranged in the minimum area, and a signal collector signal-connected to the strain sensor is arranged at the root of the blade body, wherein:

[0035] The strain sensor outputs a strain signal to the signal collector based on the stress deformation of the blade body. The signal collector is used to output the strain signal to a controller of a wind turbine unit to which the wind power blade belongs, so that the controller performs a pitch operation on the wind power blade according to the actual strain of the material corresponding to the strain signal.

[0036] Optionally, the controller is used to control the wind power blade to perform a normal pitch operation when the actual strain of the material is within a first numerical range, and to control the wind power blade to perform an emergency pitch operation when the actual strain of the material is within a second numerical range, and the first numerical range is smaller than the second numerical range.

[0037] Optionally, the first numerical range is greater than 0.95 of the material ultimate strain and less than 0.98 of the material ultimate strain.

[0038] Optionally, the second numerical range is greater than or equal to 0.98 of the material ultimate strain.

[0039] As can be seen from the above technical solutions, the present application discloses a wind turbine blade and its design method, device, electronic device, and storage medium. The design method is applied to an electronic device and is used to design a safe wind turbine blade. Specifically, the method generates ply data of the wind turbine blade based on design specifications; calculates the ply data to obtain the minimum area and material corresponding to the blade ultimate safety factor; if there are multiple minimum areas, adjusts the ply data of all minimum areas so that only the blade ultimate safety factor of the middle minimum area is 1; calculates the load of the middle minimum area; calculates other structural safety factors based on the load; if the other structural safety factors meet the safety conditions, outputs the ply data, and if not, returns to the step of adjusting the ply data of all minimum areas. This solution ensures that the safety of the entire blade is guaranteed above the safety level by determining the minimum area with the lowest safety and bringing the minimum area above the safety level, enabling users to design safe wind turbine blades based on this solution, thereby improving the operation safety of wind turbine units. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0041] Figure 1 It is a flowchart of a design method according to an embodiment of the present application;

[0042] Figure 2 It is a block diagram of a design device according to an embodiment of the present application;

[0043] Figure 3 It is a block diagram of another design device according to an embodiment of the present application;

[0044] Figure 4 It is a block diagram of an electronic device according to an embodiment of the present application;

[0045] Figure 5 It is a schematic diagram of a wind turbine blade according to an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present application belong to the scope of protection of the present application.

[0047] Example 1

[0048] Figure 1 It is a flowchart of a design method according to an embodiment of the present application.

[0049] The design method provided in this embodiment is applied to an electronic device, and is used to obtain the layup data of a wind turbine blade based on the requirements of the user. The so-called layup data refers to the structural data of the structural components in the wind turbine blade. For example, carbon fiber, glass fiber, polyethylene fiber or other fibers are laid by winding or other means to form the basic structure or complete component structure of the wind turbine blade. The electronic device in this embodiment can be understood as a computer or server with information processing capabilities and data computing capabilities.

[0050] As Figure 1 shown, the design method provided in this embodiment includes the following steps:

[0051] S1. Generate the layup data of the wind turbine blade based on the design specifications.

[0052] The design specifications here include but are not limited to general technical specifications, industry standards, national standards, etc. in the industry. Based on the above design specifications, the layup data of the relevant wind turbine blade is generated through the operation of the user.

[0053] S2. Calculate the minimum area and materials based on the layup data.

[0054] That is, based on the layup data, calculations are performed on it to obtain the minimum area and materials corresponding to the blade ultimate safety factor of the wind turbine blade. The blade ultimate safety factor here is the ratio of the material ultimate strain of the material to the actual strain of the material. When the blade ultimate safety factor is greater than or equal to 1, it means that the material is in a safe level and the wind turbine blade will not break; on the contrary, if the safety factor is less than 1, it means that the material is in a dangerous level.

[0055] S3. Adjust the layup data of multiple minimum areas.

[0056] That is, if multiple minimum areas are obtained from the layup data after calculation, all the minimum areas are adjusted. The specific process is as follows:

[0057] Perform layup adjustment processing on the layup data at the minimum area in the middle, that is, do not perform strengthening processing, and make the blade ultimate safety factor of this minimum area equal to 1, that is, the actual strain of the material here is equal to the material ultimate strain.

[0058] Perform layup strengthening processing on the layup data of the remaining minimum areas to make their blade ultimate safety factors greater than 1, so as to ensure that the blade ultimate safety factors in other areas are greater than the above-mentioned minimum area in the middle.

[0059] S4. Calculate the load of the middle minimum area.

[0060] That is, recalculate the load of the adjusted and middle minimum area. In fact, after the adjustment of the above laminate data, only this minimum area should remain, and the other minimum areas have been eliminated.

[0061] S5. Calculate other structural safety factors based on the load.

[0062] That is, calculate other structural safety factors of this minimum area according to the load obtained above. Here, other structural safety factors include but are not limited to fatigue safety factor and buckling safety factor.

[0063] S6. Output the result according to other structural safety factors.

[0064] Here, judge other structural safety factors to determine whether they meet the safety conditions. If they meet the safety conditions, such as all other structural safety factors are greater than 1, it indicates that the design is successful. At this time, output the above laminate data. If any other structural safety factor is less than 1, return to step S3 above to further adjust the laminate data of the minimum area.

[0065] As can be seen from the above technical solution, this embodiment provides a design method, which is applied to an electronic device and is used to design a safe wind turbine blade. The method specifically includes generating laminate data of the wind turbine blade based on design specifications; calculating the laminate data to obtain the minimum area and material corresponding to the blade ultimate safety factor; if there are multiple minimum areas, adjust the laminate data of all minimum areas so that only the blade ultimate safety factor of the middle minimum area is 1; calculate the load of the middle minimum area; calculate other structural safety factors based on the load; if other structural safety factors meet the safety conditions, output the laminate data, and if not, return to the step of adjusting the laminate data of all minimum areas. This solution ensures that the safety of the entire blade is guaranteed above the safety level by determining the minimum area with the lowest safety and making the minimum area above the safety level, so that users can design a safe wind turbine blade based on this solution, thereby improving the operation safety of the wind turbine unit.

[0066] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagram may represent a module, a segment of a program, or a part of code that contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions noted in the blocks may occur in a different order than that noted in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and combinations of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system that performs the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0067] Although the operations are depicted in a particular order, this should not be construed as requiring that the operations be performed in the particular order shown or in a sequential order. In certain circumstances, multitasking and parallel processing may be advantageous.

[0068] It should be understood that the various steps recited in the method embodiments of the present disclosure may be executed in a different order and / or in parallel. In addition, method embodiments may include additional steps and / or omit performing the steps shown. The scope of the present disclosure is not limited in this regard.

[0069] Computer program code for carrying out operations of the present disclosure may be written in one or more programming languages or combinations thereof, including but not limited to object-oriented programming languages such as Java, Smalltalk, C++, and also including conventional procedural programming languages such as the C language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer, or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer.

[0070] Embodiment 2

[0071] Figure 2 This is a block diagram of a design device according to an embodiment of the present application.

[0072] As Figure 2As shown in the figure, the design device provided in this embodiment includes a data generation module 10, a first calculation module 20, a data adjustment module 30, a second calculation module 40, a third calculation module 50, and an output control module 60.

[0073] The data generation module is used to generate the layup data of the wind turbine blade based on the design specifications.

[0074] The design specifications here include but are not limited to the general technical specifications, industry standards, national standards, etc. in the industry. Based on the above design specifications, the layup data of the relevant wind turbine blade is generated through the operation of the user.

[0075] The first calculation module is used to calculate the minimum area and materials based on the layup data.

[0076] That is, calculations are performed on the layup data to obtain the minimum area and materials corresponding to the blade ultimate safety factor of the wind turbine blade. The blade ultimate safety factor here is the ratio of the material ultimate strain of the material to the actual strain of the material. When the blade ultimate safety factor is greater than or equal to 1, it indicates that the material is in a safe level and the wind turbine blade will not break; conversely, if the safety factor is less than 1, it indicates that the material is in a dangerous level.

[0077] The data adjustment module is used to adjust the layup data of multiple minimum areas.

[0078] That is, if multiple minimum areas are obtained from the calculation of the layup data, all the minimum areas are adjusted. This module specifically includes a first adjustment unit 31 and a second adjustment unit 32, as Figure 3 shown.

[0079] The first adjustment unit is used to perform layup adjustment processing on the layup data at the middle minimum area, that is, no strengthening treatment is performed, and the blade ultimate safety factor of this minimum area is made 1, that is, the actual strain of the material here is equal to the material ultimate strain.

[0080] The second adjustment unit is used to perform layup strengthening processing on the layup data of the remaining minimum areas to make their blade ultimate safety factors greater than 1, so as to ensure that the blade ultimate safety factors of other areas are greater than the above-mentioned middle minimum area.

[0081] The second calculation module is used to calculate the load of the middle minimum area.

[0082] That is, recalculate the load of the adjusted and middle minimum area. In fact, after the adjustment of the above layup data, only this minimum area should remain, and the remaining minimum areas have been eliminated.

[0083] The third calculation module is used to calculate other structural safety factors based on the load.

[0084] That is, based on the load obtained from the above calculations, the safety factors of other structures in this minimum area are calculated. The other structure safety factors here include, but are not limited to, fatigue safety factors and buckling safety factors.

[0085] The output control module is used to output results based on the safety factors of other structures.

[0086] Here, the safety factors of other structures are judged to determine whether they meet the safety conditions. If they meet the safety conditions, such as all other structure safety factors are greater than 1, it indicates that the design is successful. At this time, the above-mentioned ply data is output. If any other structure safety factor is less than 1, return to step S3 above to further adjust the ply data of the minimum area.

[0087] As can be seen from the above technical solution, this embodiment provides a design device. This design device is applied to an electronic device and is used to design a safe wind turbine blade. The method specifically includes generating ply data of the wind turbine blade based on design specifications; calculating the ply data to obtain the minimum area and materials corresponding to the blade ultimate safety factor; if there are multiple minimum areas, adjust the ply data of all minimum areas so that only the blade ultimate safety factor of the middle minimum area is 1; calculate the load of the middle minimum area; calculate the safety factors of other structures based on the load; if the safety factors of other structures meet the safety conditions, output the ply data, and if not, return to the step of adjusting the ply data of all minimum areas. This solution ensures that the safety of the entire blade is guaranteed above the safety level by determining the minimum area with the lowest safety and making the minimum area above the safety level, so that users can design safe wind turbine blades based on this solution, thereby improving the operation safety of the wind turbine unit.

[0088] The units involved in the embodiments described in this disclosure can be implemented in software or in hardware. Among them, the name of the unit does not constitute a limitation to the unit itself in some cases. For example, the first acquisition unit can also be described as "the unit for acquiring at least two Internet protocol addresses".

[0089] The functions described above herein can be at least partially performed by one or more hardware logic components. For example, without limitation, the exemplary types of hardware logic components that can be used include: Field Programmable Gate Array (FPGA), Application Specific Integrated Circuit (ASIC), Application Specific Standard Product (ASSP), System on Chip (SOC), Complex Programmable Logic Device (CPLD), and so on.

[0090] Embodiment III

[0091] Next, refer to Figure 4As shown, it shows a schematic structural diagram of an electronic device suitable for implementing the electronic device in the embodiments of the present disclosure. The terminal device in the embodiments of the present disclosure may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Tablet Computers), PMPs (Portable Multimedia Players), in-vehicle terminals (such as in-vehicle navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. This electronic device is merely an example and should not impose any limitations on the functions and usage scope of the embodiments of the present disclosure.

[0092] The electronic device may include a processing device (such as a central processing unit, a graphics processing unit, etc.) 401, which may perform various appropriate actions and processes according to the programs stored in the read-only memory (ROM) 402 or the programs loaded from the storage device 406 into the random access memory (RAM) 403. In the RAM 403, various programs and data required for the operation of the electronic device are also stored. The processing device 601, the ROM 602, and the RAM 403 are connected to each other through a bus 404. The input / output (I / O) interface 405 is also connected to the bus 404.

[0093] Generally, the following devices may be connected to the I / O interface 405: an input device 406 including, for example, a touch screen, a touchpad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; an output device 407 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 408 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 409. The communication device 409 may allow the electronic device to communicate with other devices wirelessly or wiredly to exchange data. Although the figure shows an electronic device having various devices, it should be understood that it is not required to implement or have all the shown devices. More or fewer devices may be alternatively implemented or had.

[0094] Embodiment Four

[0095] This embodiment provides a computer-readable storage medium that carries one or more computer programs. When the above one or more computer programs are executed by the electronic device, the electronic device can generate the layup data of the wind turbine blade based on the design specifications; calculate the layup data to obtain the minimum area and material corresponding to the blade ultimate safety factor; if there are multiple minimum areas, adjust the layup data of all minimum areas so that only the blade ultimate safety factor of the middle minimum area is 1; calculate the load of the middle minimum area; calculate other structural safety factors based on the load; if the other structural safety factors meet the safety conditions, output the layup data, and if not, return to the step of adjusting the layup data of all minimum areas. This solution ensures that the safety of the entire blade is guaranteed above the safety level by determining the minimum area with the lowest safety and making the minimum area above the safety level, so that users can design safe wind turbine blades based on this solution, thereby improving the operation safety of the wind turbine unit.

[0096] It should be noted that the computer-readable medium in the present disclosure can be a computer-readable signal medium, a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of the computer-readable storage medium can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present disclosure, a computer-readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or in combination with an instruction execution system, apparatus, or device. In the present disclosure, a computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, which carries computer-readable program code. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, and this computer-readable signal medium can send, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted by any appropriate medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0097] Embodiment Five

[0098] Figure 5 Schematic diagram of a wind turbine blade for its own implementation example.

[0099] As Figure 5 shown, this embodiment provides a wind turbine blade, which is designed based on the solution provided in the above-mentioned Embodiment 1. Specifically, the wind turbine blade includes a blade body 100. There is a minimum area 101 corresponding to the blade ultimate safety factor on the blade body. A strain sensor (not shown) is provided in the minimum area, and a signal collector (not shown) connected to the strain sensor in signal is provided at the root of the blade body.

[0100] The strain sensor outputs a strain signal to the signal collector based on the stress deformation of the blade body. The signal collector is used to output the strain signal to the controller of the wind turbine unit to which the wind turbine blade belongs, so that the controller performs a pitch operation on the wind turbine blade according to the actual strain of the material corresponding to the strain signal.

[0101] The controller in this embodiment is used to control the wind turbine blade to perform a normal pitch operation when the actual strain of the material is within the first numerical range, and to control the wind turbine blade to perform an emergency pitch operation when the actual strain of the material is within the second numerical range. The first numerical range is smaller than the second numerical range. The specific value of the first numerical range is greater than 0.95 of the material ultimate strain and less than 0.98 of the material ultimate strain. The specific value of the second numerical range is greater than or equal to 0.98 of the material ultimate strain.

[0102] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0103] Although the preferred embodiments of the embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted to include the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present invention.

[0104] Finally, it should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising said element.

[0105] The technical solutions provided by the present invention have been introduced in detail above. Specific examples are used in this text to elaborate on the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A design method, applied to an electronic device, for designing a safe wind turbine blade, characterized in that The design method includes the steps of: Generating ply data of a wind turbine blade based on design specifications; Calculating the ply data to obtain the minimum area and material corresponding to the blade ultimate safety factor; If there are multiple minimum areas, adjusting the ply data of all the minimum areas so that only the blade ultimate safety factor of the middle minimum area is 1. Specifically, performing ply adjustment processing on the ply data of the middle minimum area and performing ply enhancement processing on the ply data of the remaining minimum areas; Calculating the load of the middle minimum area; Calculating other structural safety factors based on the load; If the other structural safety factors meet the safety conditions, outputting the ply data; if not, returning to the step of adjusting the ply data of all the minimum areas.

2. The design method according to claim 1, wherein The other structural safety factors include a fatigue safety factor and / or a buckling safety factor.

3. The design method according to claim 1, characterized in that The safety condition is that the structural safety factor is greater than 1.

4. A design device, applied to an electronic device, for designing a safe wind turbine blade, characterized in that, The design device includes: A data generation module configured to generate ply data of a wind turbine blade based on design specifications; A first calculation module configured to calculate the ply data to obtain the minimum area and material corresponding to the blade ultimate safety factor; A data adjustment module configured to, if there are multiple minimum areas, adjust the ply data of all the minimum areas so that only the blade ultimate safety factor of the middle minimum area is 1. The data adjustment module includes a first adjustment unit and a second adjustment unit. The first adjustment unit is configured to perform ply adjustment processing on the ply data of the middle minimum area, and the second adjustment unit is configured to perform ply enhancement processing on the ply data of the remaining minimum areas; A second calculation module configured to calculate the load of the middle minimum area; A third calculation module configured to calculate other structural safety factors based on the load; An output control module configured to, if the other structural safety factors meet the safety conditions, output the ply data; if not, returning to the step of adjusting the ply data of all the minimum areas.

5. The design device according to claim 4, characterized in that, The other structural safety factors include a fatigue safety factor and / or a buckling safety factor.

6. The design device according to claim 4, characterized in that, The safety condition is that the structural safety factor is greater than 1.

7. An electronic device, characterized in that, Including at least one processor and a memory connected to the processor, wherein: The memory is used to store computer programs or instructions; The processor is used to execute the computer programs or instructions so that the electronic device implements the design method according to any one of claims 1 to 3.

8. A storage medium, applied to an electronic device, characterized in that, The storage medium carries one or more computer programs that can be executed by the electronic device so that the electronic device implements the design method according to any one of claims 1 to 3.

9. A wind turbine blade obtained by the design method according to any one of claims 1 to 3, characterized in that, Including a blade body, on which there is a minimum area corresponding to a blade ultimate safety factor. A strain sensor is provided in the minimum area, and a signal collector signal-connected to the strain sensor is provided at the root of the blade body. Wherein: The strain sensor outputs a strain signal to the signal collector based on the stress deformation of the blade body, and the signal collector is used to output the strain signal to the controller of the wind turbine to which the wind turbine blade belongs, so that the controller performs a pitch operation on the wind turbine blade according to the actual strain of the material corresponding to the strain signal.

10. The wind power blade according to claim 9, wherein The controller is used to control the wind turbine blade to perform a normal pitch operation when the actual strain of the material is within the first numerical range, and to control the wind turbine blade to perform an emergency pitch operation when the actual strain of the material is within the second numerical range, where the first numerical range is smaller than the second numerical range.

11. The wind power blade according to claim 10, wherein, The first numerical range is greater than 0.95 of the material ultimate strain and less than ~0.98 of the material ultimate strain.

12. The wind power blade according to claim 10, wherein The second numerical range is greater than or equal to 0.98 of the material ultimate strain.

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