Segmentation scheme determination method and device, storage medium and electronic equipment

Abstract

The embodiment of the invention provides a segmentation scheme determining method and device, a storage medium and electronic device.The method comprises the steps that a first finite element analysis model of a target blade is established, and first structural strength distribution of the target blade is determined based on the first finite element analysis model; the load of each area of the target blade is determined according to the first structural strength distribution, a target area is determined according to the load of each area, and the target area is one or more areas with the lowest load; and determining a segmentation position of the target blade according to the target area, and determining a segmentation scheme for segmenting the target blade according to the segmentation position.

Description

Technical Field

[0001] The present application relates to the field of wind power, and in particular, to a method and device for determining a segmentation scheme, a storage medium, and an electronic device. Background Art

[0002] In the field of wind power generation, especially for large wind turbines, the size of the blades is often very large, which brings significant challenges to the manufacture, transportation and installation of the blades. The manufacturing process of large blades is complex and costly, while the transportation and installation process is limited by road conditions, the size and load capacity of the transport vehicles, and the installation equipment on site. In addition, long blades are subject to large aerodynamic loads during operation, which may cause vibration, fatigue and even damage to the blades.

[0003] In order to solve the above problems, the concept of segmented blades was introduced, that is, long blades are designed into several shorter segments, which are manufactured separately and then assembled on site. This design can significantly reduce manufacturing costs, simplify transportation and installation processes, and by optimizing the connection structure, it can reduce vibration and fatigue of the blades during operation.

[0004] However, in the prior art, engineers generally design segmented blades based on their design experience, which results in a low accuracy rate of the segmentation scheme for the blades.

[0005] With regard to the problem of low accuracy of blade segmentation schemes in the prior art, no effective solution has been proposed yet.

[0006] Therefore, it is necessary to improve the related technology to overcome the above-mentioned defects in the related technology. Summary of the invention

[0007] The embodiments of the present application provide a method and device for determining a segmentation scheme, a storage medium, and an electronic device, so as to at least solve the problem of low accuracy of the segmentation scheme for segmenting blades in the prior art.

[0008] According to one embodiment of the present application, a method for determining a segmentation scheme is provided, including: establishing a first finite element analysis model of a target blade, and determining a first structural strength distribution of the target blade based on the first finite element analysis model; determining the load of each area of ​​the target blade according to the first structural strength distribution, and determining a target area according to the load of each area, wherein the target area is one or more areas with the lowest load; determining a segmentation position of the target blade according to the target area, and determining a segmentation scheme for segmenting the target blade according to the segmentation position.

[0009] In an exemplary embodiment, a segmentation scheme for segmenting the target blade is determined according to the segmentation position, including: determining a plurality of sub-blades corresponding to the target blade according to the segmentation position; establishing a second finite element analysis model of the target blade based on the plurality of sub-blades, and determining a second structural strength distribution of the target blade based on the second finite element analysis model; and determining the segmentation scheme according to whether the second structural strength distribution conforms to a preset structural strength distribution.

[0010] In an exemplary embodiment, the segmentation scheme is determined according to whether the second structural strength distribution conforms to a preset structural strength distribution, including: when the structural strength distribution conforms to the preset structural strength distribution, determining the segmentation scheme for segmenting the target blade according to the segmentation position; when the structural strength distribution does not conform to the preset structural strength distribution, adjusting the segmentation position, and determining the segmentation scheme for segmenting the target blade according to the adjusted segmentation position.

[0011] In an exemplary embodiment, establishing a first finite element analysis model of a target blade includes: determining a rated wind speed and a rated power of a wind turbine, wherein the target blade is a blade on the wind turbine; determining a rotor swept area of ​​the target blade according to the rated wind speed and the rated power, and determining a blade length of the target blade according to the rotor swept area; and establishing a first finite element analysis model of the target blade according to the blade length.

[0012] In an exemplary embodiment, a first finite element analysis model of a target blade is established according to the blade length, including: calculating the lift and drag of the target blade at the rated wind speed and target angle of attack through aerodynamic theory; determining the aerodynamic load of the target blade according to the lift and drag; and establishing the first finite element analysis model of the target blade according to the blade length and the aerodynamic load.

[0013] In an exemplary embodiment, after establishing a first finite element analysis model of the target blade according to the blade length and the aerodynamic load, the method further includes: determining the stress, strain and displacement of the first finite element analysis model under the aerodynamic load; determining a first comparison result between the stress and a preset stress, a second comparison result between the strain and a preset strain, and a third comparison result between the displacement and a preset displacement; optimizing the ply of the target blade when the first comparison result indicates that the stress is greater than the preset stress, and / or the second comparison result indicates that the strain is greater than the preset strain, and / or the displacement is greater than the preset displacement; establishing a third finite element analysis model based on the optimized target blade, and determining a first structural strength distribution of the target blade based on the third finite element analysis model.

[0014] According to another embodiment of the present application, a device for determining a segmentation scheme is provided, including: a first determination module, used to establish a first finite element analysis model of a target blade, and determine a first structural strength distribution of the target blade based on the first finite element analysis model; a second determination module, used to determine the load of each area of ​​the target blade according to the first structural strength distribution, and determine a target area according to the load of each area, wherein the target area is one or more areas with the lowest load; a third determination module, used to determine a segmentation position of the target blade according to the target area, and determine a segmentation scheme for segmenting the target blade according to the segmentation position.

[0015] According to another embodiment of the present application, a computer-readable storage medium is provided, in which a computer program is stored, wherein the computer program is configured to execute the steps of any of the above method embodiments when run.

[0016] According to another embodiment of the present application, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0017] According to another embodiment of the present application, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the steps in any of the above method embodiments are implemented.

[0018] Through the present application, a first finite element analysis model of a target blade is established, and the first structural strength distribution of the target blade is determined based on the first finite element analysis model; the load of each area of ​​the target blade is determined according to the first structural strength distribution, and the target area is determined according to the load of each area, wherein the target area is one or more areas with the lowest load; the segmentation position of the target blade is determined according to the target area, and the segmentation scheme for segmenting the target blade is determined according to the segmentation position. The establishment and use of the finite element analysis model can more accurately predict the behavior of the blade in actual operation, thereby avoiding the uncertainty that may exist in the traditional design method and reducing the negative impact of the segmentation scheme on the blade performance. Therefore, the problem of low accuracy of the segmentation scheme for segmenting the blade can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 It is a hardware structure block diagram of a computer device for a method for determining a segmentation scheme according to an embodiment of the present application;

[0022] Figure 2 is a flow chart (I) of a method for determining a segmentation scheme according to an embodiment of the present application;

[0023] Figure 3 is a flow chart (II) of a method for determining a segmentation scheme according to an embodiment of the present application;

[0024] Figure 4 It is a structural block diagram of a device for determining a segmentation scheme according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0027] The method embodiments provided in the embodiments of the present application can be executed in a computer device or a similar computing device. Taking running on a computer device as an example, Figure 1 1 is a hardware structure block diagram of a computer device for determining a segmentation scheme according to an embodiment of the present application. Figure 1 As shown, the computer device may include one or more ( Figure 1 Only one is shown in the figure) a processor 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data, wherein the above-mentioned computer device may also include a transmission device 106 and an input and output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the above-mentioned computer device. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations are shown.

[0028] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the method for determining the segmentation scheme in the embodiment of the present application. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, to implement the above method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0029] The transmission device 106 is used to receive or send data via a network. The above-mentioned network specific examples may include a wireless network provided by a communication provider of the computer device. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0030] In this embodiment, a method for determining a segmentation scheme is provided. Figure 2 is a flow chart (I) of a method for determining a segmentation scheme according to an embodiment of the present application, such as Figure 2 As shown, the process includes the following steps:

[0031] Step S202, establishing a first finite element analysis model of a target blade, and determining a first structural strength distribution of the target blade based on the first finite element analysis model;

[0032] Step S204, determining the load of each region of the target blade according to the first structural strength distribution, and determining a target region according to the load of each region, wherein the target region is one or more regions with the lowest load;

[0033] It should be noted that, when the target area is a plurality of areas, the plurality of areas with the lowest loads can be understood as areas with the first lowest, second lowest, ... Nth lowest loads.

[0034] Step S206: determining the segmentation position of the target blade according to the target area, and determining a segmentation scheme for segmenting the target blade according to the segmentation position.

[0035] The segmentation scheme mentioned above carries the segmentation positions.

[0036] Through the above steps, a first finite element analysis model of the target blade is established, and the first structural strength distribution of the target blade is determined based on the first finite element analysis model; the load of each area of ​​the target blade is determined according to the first structural strength distribution, and the target area is determined according to the load of each area, wherein the target area is one or more areas with the lowest load; the segmentation position of the target blade is determined according to the target area, and the segmentation scheme for segmenting the target blade is determined according to the segmentation position. The establishment and use of the finite element analysis model can more accurately predict the behavior of the blade in actual operation, thereby avoiding the uncertainty that may exist in the traditional design method and reducing the negative impact of the segmentation scheme on the blade performance. Therefore, the problem of low accuracy of the segmentation scheme for segmenting the blade can be solved.

[0037] In an exemplary embodiment, a segmentation scheme for segmenting the target blade is determined according to the segmentation position, including: determining a plurality of sub-blades corresponding to the target blade according to the segmentation position; establishing a second finite element analysis model of the target blade based on the plurality of sub-blades, and determining a second structural strength distribution of the target blade based on the second finite element analysis model; and determining the segmentation scheme according to whether the second structural strength distribution conforms to a preset structural strength distribution.

[0038] According to the segmentation position, the target blade is divided into multiple sub-blades, each of which is an independent part. A finite element analysis model is established for each sub-blade or the entire segmented blade to evaluate the structural strength distribution after segmentation. Based on the second finite element analysis model, the structural strength distribution of the segmented blade is calculated to check whether it meets the preset structural strength requirements. The preset structural strength distribution may be set based on design specifications, safety standards and engineering experience to ensure that the segmented blade can maintain sufficient structural integrity under various load conditions.

[0039] Optionally, in the embodiments of the present application, microscopic and macroscopic level analyses may be combined to evaluate different levels of structural strength, such as strength at the fiber level, laminate level, and overall blade level.

[0040] In the embodiment of the present application, the mechanical properties of the segmented connection points can be analyzed in detail based on the second finite element analysis model, and the connection design can be optimized, such as adding local reinforcement structures, using high-performance connection materials, etc., to ensure that the strength of the connection points is not lower than other parts of the blade.

[0041] In an exemplary embodiment, the segmentation scheme is determined according to whether the second structural strength distribution conforms to a preset structural strength distribution, including: when the structural strength distribution conforms to the preset structural strength distribution, determining the segmentation scheme for segmenting the target blade according to the segmentation position; when the structural strength distribution does not conform to the preset structural strength distribution, adjusting the segmentation position, and determining the segmentation scheme for segmenting the target blade according to the adjusted segmentation position.

[0042] In the embodiment of the present application, a solution for determining the blade segmentation scheme through iterative finite element analysis (FEA) and structural strength verification is provided, as follows:

[0043] After the segmented positions are preliminarily determined, a finite element analysis model of the segmented blade is established to calculate its secondary structural strength distribution.

[0044] If the second structural strength distribution matches the preset structural strength distribution, that is, the segmented blade reaches the design standard in structural strength, then it can be confirmed that the current segmentation position is appropriate, and then a specific segmentation plan can be formulated based on this position.

[0045] If the second structural strength distribution does not meet the preset structural strength distribution, it indicates that the structural strength of the segmented blade in some areas may be lower than the design requirements, which may pose a potential safety hazard. In this case, it is necessary to adjust the segment position and re-perform finite element analysis until the second structural strength distribution meets the preset requirements.

[0046] It should be noted that, based on the comparison results of the structural strength distribution, if the segment position needs to be adjusted, the original segment position can be adjusted to an area that is not the lowest load. For example, the first determined segment position is the area with the first and second lowest loads, and the adjusted segment position can be the area with the second and third lowest loads, or the number of segment positions can be reduced or increased. After the adjustment, the finite element analysis model needs to be re-established to evaluate the new segmentation scheme. This process requires multiple iterations until the optimal segmentation scheme is found that meets both the preset structural strength distribution and other design requirements (such as aerodynamic performance, cost, manufacturability, etc.).

[0047] Through the above-mentioned embodiments, the accuracy of the blade segmentation scheme can be ensured, and structural problems caused by improper segmentation can be avoided. At the same time, through continuous optimization, the comprehensive performance of the blades can be improved, providing a scientific basis for the design and manufacture of wind turbines.

[0048] In an exemplary embodiment, establishing a first finite element analysis model of a target blade includes: determining a rated wind speed and a rated power of a wind turbine, wherein the target blade is a blade on the wind turbine; determining a rotor swept area of ​​the target blade according to the rated wind speed and the rated power, and determining a blade length of the target blade according to the rotor swept area; and establishing a first finite element analysis model of the target blade according to the blade length.

[0049] When designing a wind turbine, rated wind speed and rated power are two key parameters that are directly related to the size and structural design of the blades. Rated wind speed refers to the wind speed at which the wind turbine reaches its rated power output, while rated power refers to the maximum power that the generator can continuously output at the rated wind speed.

[0050] The wind swept area of ​​the wind rotor refers to the circular area covered by the blades of the wind turbine when they rotate. It is related to the length and number of the blades. The size of the wind swept area of ​​the wind rotor directly affects the power output of the wind turbine, because a larger wind swept area means more wind energy can be captured. The required wind swept area of ​​the wind rotor can be reversely calculated through the rated wind speed and rated power, and then the length of the blades can be determined.

[0051] Under given rated wind speed and rated power conditions, the calculation result of the swept area of ​​the wind rotor will determine the blade length. With the blade length information, the first finite element analysis model of the blade can be established. Finite element analysis is a numerical simulation technique used to predict the behavior of a structure under different load conditions. The geometry, material properties, connection methods and other design details of the blades need to be considered when building the model. Through FEA, the stress distribution, strain, vibration characteristics, etc. of the blades under the expected wind load conditions can be evaluated, providing key data for the subsequent determination of the segmentation scheme.

[0052] It should be noted that in addition to the rated wind speed and rated power conditions, the impact of different wind speeds, wind directions, ambient temperatures and other operating conditions on blade strength should also be considered, and FEA should be carried out under multiple operating conditions to ensure the comprehensiveness and reliability of the blade design.

[0053] In an exemplary embodiment, a first finite element analysis model of a target blade is established according to the blade length, including: calculating the lift and drag of the target blade at the rated wind speed and target angle of attack through aerodynamic theory; determining the aerodynamic load of the target blade according to the lift and drag; and establishing the first finite element analysis model of the target blade according to the blade length and the aerodynamic load.

[0054] At a given rated wind speed and target angle of attack (the relative angle between the blade and the wind direction), the lift and drag of the blades can be calculated through aerodynamic theory to predict the behavior of the blades under wind force. Lift refers to the force perpendicular to the wind direction on the blades, while drag refers to the force parallel to the wind direction. The aerodynamic performance of the blades directly affects the efficiency and stability of the wind turbine.

[0055] Aerodynamic load is the external load borne by the blade during operation, which is mainly composed of lift and drag caused by wind. By calculating the lift and drag of the blade at rated wind speed and target angle of attack, the aerodynamic load distribution of the blade can be further determined.

[0056] The first finite element analysis model is established based on the length of the blade and the distribution of aerodynamic loads, which can evaluate whether the blade meets the design requirements in terms of structural strength and stiffness. The model needs to consider factors such as the properties of the blade material, geometric shape, and connection method to ensure the accuracy and reliability of the model.

[0057] In an exemplary embodiment, after establishing a first finite element analysis model of the target blade according to the blade length and the aerodynamic load, the method further includes: determining the stress, strain and displacement of the first finite element analysis model under the aerodynamic load; determining a first comparison result between the stress and a preset stress, a second comparison result between the strain and a preset strain, and a third comparison result between the displacement and a preset displacement; optimizing the ply of the target blade when the first comparison result indicates that the stress is greater than the preset stress, and / or the second comparison result indicates that the strain is greater than the preset strain, and / or the displacement is greater than the preset displacement; establishing a third finite element analysis model based on the optimized target blade, and determining a first structural strength distribution of the target blade based on the third finite element analysis model.

[0058] After the first finite element analysis model is established, the stress, strain and displacement of the model under aerodynamic load are further calculated, which can reflect the deformation of the blade under load and the distribution of internal forces.

[0059] The calculated stress, strain and displacement are compared with the preset safety thresholds to obtain the first, second and third comparison results. The preset stress, strain and displacement values ​​are usually set based on material properties, design specifications and safety standards. The comparison results are mainly used to identify potential overload or unsafe design areas in the model, that is, locations where stress, strain or displacement exceeds the preset threshold.

[0060] If the comparison results show that the blade has problem areas with excessive stress, strain or displacement, the blade ply needs to be optimized. Ply optimization may include adjusting the distribution of materials, increasing or decreasing the number of fiber layers, changing the fiber direction, etc., to improve the structural strength and stiffness of the blade, reduce stress concentration and strain, and control the displacement within an acceptable range.

[0061] Based on the optimized ply design, the third finite element analysis model was re-established and the structural strength analysis was performed again.

[0062] It should be noted that during the ply optimization process, it is necessary to comprehensively consider the mechanical properties (strength, stiffness, toughness, etc.) and physical properties (density, thermal expansion coefficient, etc.) of the material to ensure that the optimized design meets both mechanical requirements and manufacturing and economic considerations.

[0063] Through the above embodiments, it can be ensured that the design of the wind turbine blades not only meets the aerodynamic efficiency requirements, but also ensures the strength and reliability of the structure, providing a solid engineering design foundation for the efficient and stable operation of the wind turbine generator set.

[0064] In order to better understand the process of determining the above segmentation scheme, the implementation method flow of determining the above segmentation scheme is described below in combination with an optional embodiment, but it is not used to limit the technical solution of the embodiment of the present application.

[0065] In this embodiment, a method for determining a segmentation scheme is provided. Figure 3 is a flow chart (II) of a method for determining a segmentation scheme according to an embodiment of the present application, such as Figure 3 As shown, the specific steps are as follows:

[0066] Step S301: determining the rated wind speed and rated power of the wind turbine generator set;

[0067] Step S302: estimating the efficiency of the wind turbine generator set;

[0068] Step S303: determining the wind swept area of ​​the wind wheel;

[0069] Step S304: determining the blade length;

[0070] Step S305: calculating the blade aerodynamic load;

[0071] Step S306: designing blade structure ply;

[0072] Step S307: calculating the blade structural strength;

[0073] Step S308: determining the area with the lowest blade load;

[0074] Step S309: determining the lowest load area as the segment position;

[0075] Step S310: Determine the number of segments according to the operating environment, transportation, installation and other requirements;

[0076] Among them, the general number of segments is 2 or 3.

[0077] Step S311: after determining the segmentation, carry out structural design;

[0078] Step S312: determining the structural strength of the segmented blade;

[0079] Step S313: Determine whether the structural strength meets the requirements. If it meets the requirements, execute step S314; otherwise, execute step S310 or step S309.

[0080] Executing step S310 or step S309 can be understood as adjusting the original segment position to an area other than the area with the lowest load. For example, the first determined segment position is an area with the first lowest and second lowest loads, and the adjusted segment position can be an area with the second lowest and third lowest loads, or reducing or increasing the number of segment positions. For example, the original number is two, which can be adjusted to three, or the original number is three, which can be adjusted to two.

[0081] Step S314: Determine the final segmentation scheme.

[0082] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0083] In this embodiment, a device for determining a segmentation scheme is also provided, and the device is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made are not repeated here. As used below, the term "module" can implement a combination of software and / or hardware of a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0084] Figure 4 is a structural block diagram of a device for determining a segmentation scheme according to an embodiment of the present application, such as Figure 4 As shown, the device comprises:

[0085] A first determination module 42, configured to establish a first finite element analysis model of a target blade, and determine a first structural strength distribution of the target blade based on the first finite element analysis model;

[0086] A second determination module 44 is used to determine the load of each area of ​​the target blade according to the first structural strength distribution, and determine the target area according to the load of each area, wherein the target area is one or more areas with the lowest load;

[0087] The third determination module 46 is used to determine the segmentation position of the target blade according to the target area, and determine a segmentation scheme for segmenting the target blade according to the segmentation position.

[0088] Through the above-mentioned device, a first finite element analysis model of the target blade is established, and the first structural strength distribution of the target blade is determined based on the first finite element analysis model; the load of each area of ​​the target blade is determined according to the first structural strength distribution, and the target area is determined according to the load of each area, wherein the target area is one or more areas with the lowest load; the segmentation position of the target blade is determined according to the target area, and the segmentation scheme for segmenting the target blade is determined according to the segmentation position. The establishment and use of the finite element analysis model can more accurately predict the behavior of the blade in actual operation, thereby avoiding the uncertainty that may exist in the traditional design method and reducing the negative impact of the segmentation scheme on the blade performance. Therefore, the problem of low accuracy of the segmentation scheme for segmenting the blade can be solved.

[0089] In an exemplary embodiment, the third determination module 46 is used to determine a plurality of sub-blades corresponding to the target blade according to the segmented position; establish a second finite element analysis model of the target blade based on the plurality of sub-blades, and determine a second structural strength distribution of the target blade based on the second finite element analysis model; and determine the segmentation scheme according to whether the second structural strength distribution conforms to a preset structural strength distribution.

[0090] In an exemplary embodiment, the third determination module 46 is used to determine a segmentation scheme for segmenting the target blade according to the segmentation position when the structural strength distribution conforms to the preset structural strength distribution; when the structural strength distribution does not conform to the preset structural strength distribution, adjust the segmentation position, and determine the segmentation scheme for segmenting the target blade according to the adjusted segmentation position.

[0091] In an exemplary embodiment, the first determination module 42 is used to determine the rated wind speed and rated power of the wind turbine, wherein the target blade is a blade on the wind turbine; determine the rotor swept area of ​​the target blade according to the rated wind speed and the rated power, and determine the blade length of the target blade according to the rotor swept area; and establish a first finite element analysis model of the target blade according to the blade length.

[0092] In an exemplary embodiment, the first determination module 42 is used to calculate the lift and drag of the target blade at the rated wind speed and the target angle of attack through aerodynamic theory; determine the aerodynamic load of the target blade according to the lift and drag; and establish a first finite element analysis model of the target blade according to the blade length and the aerodynamic load.

[0093] In an exemplary embodiment, the first determination module 42 is used to determine the stress, strain and displacement of the first finite element analysis model under the aerodynamic load; determine a first comparison result between the stress and the preset stress, a second comparison result between the strain and the preset strain, and a third comparison result between the displacement and the preset displacement; optimize the ply of the target blade when the first comparison result indicates that the stress is greater than the preset stress, and / or the second comparison result indicates that the strain is greater than the preset strain, and / or the displacement is greater than the preset displacement; establish a third finite element analysis model based on the optimized target blade, and determine the first structural strength distribution of the target blade based on the third finite element analysis model.

[0094] It should be noted that the above modules can be implemented by software or hardware. For the latter, it can be implemented in the following ways, but not limited to: the above modules are all located in the same processor; or the above modules are located in different processors in any combination.

[0095] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored, wherein the computer program is configured to execute the steps of any of the above method embodiments when running.

[0096] Optionally, in this embodiment, the storage medium may be configured to store program codes for executing the following steps:

[0097] S1, establishing a first finite element analysis model of a target blade, and determining a first structural strength distribution of the target blade based on the first finite element analysis model;

[0098] S2, determining the load of each region of the target blade according to the first structural strength distribution, and determining a target region according to the load of each region, wherein the target region is one or more regions with the lowest load;

[0099] S3, determining a segmentation position of the target blade according to the target area, and determining a segmentation scheme for segmenting the target blade according to the segmentation position.

[0100] In an exemplary embodiment, the computer-readable storage medium may include, but is not limited to, various media that can store computer programs, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk.

[0101] An embodiment of the present application further provides an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0102] In an exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0103] Optionally, in this embodiment, the processor may be configured to perform the following steps through a computer program:

[0104] S1, establishing a first finite element analysis model of a target blade, and determining a first structural strength distribution of the target blade based on the first finite element analysis model;

[0105] S2, determining the load of each region of the target blade according to the first structural strength distribution, and determining a target region according to the load of each region, wherein the target region is one or more regions with the lowest load;

[0106] S3, determining a segmentation position of the target blade according to the target area, and determining a segmentation scheme for segmenting the target blade according to the segmentation position.

[0107] An embodiment of the present application further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps in any one of the above method embodiments are implemented.

[0108] An embodiment of the present application further provides another computer program product, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in any of the above method embodiments are implemented.

[0109] An embodiment of the present application also provides a computer program, which includes computer instructions, which are stored in a computer-readable storage medium; a processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the steps in any one of the above method embodiments.

[0110] Optionally, in this embodiment, the processor may be configured to perform the following steps through a computer program:

[0111] S1, establishing a first finite element analysis model of a target blade, and determining a first structural strength distribution of the target blade based on the first finite element analysis model;

[0112] S2, determining the load of each region of the target blade according to the first structural strength distribution, and determining a target region according to the load of each region, wherein the target region is one or more regions with the lowest load;

[0113] S3, determining a segmentation position of the target blade according to the target area, and determining a segmentation scheme for segmenting the target blade according to the segmentation position.

[0114] For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary implementation modes, and this embodiment will not be described in detail herein.

[0115] Obviously, those skilled in the art should understand that the above modules or steps of the present application can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order from that herein, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present application is not limited to any specific combination of hardware and software.

[0116] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for determining a segmentation scheme, characterized in that: include: Establishing a first finite element analysis model of a target blade, and determining a first structural strength distribution of the target blade based on the first finite element analysis model; Determine the load of each region of the target blade according to the first structural strength distribution, and determine the target region according to the load of each region, wherein the target region is one or more regions with the lowest load; The segmentation position of the target blade is determined according to the target area, and a segmentation scheme for segmenting the target blade is determined according to the segmentation position.

2. The method according to claim 1, characterized in that Determining a segmentation scheme for segmenting the target blade according to the segmentation position includes: Determine a plurality of sub-blades corresponding to the target blade according to the segmented positions; A second finite element analysis model of the target blade is established based on the multiple sub-blades, and a second structural strength distribution of the target blade is determined based on the second finite element analysis model; and the segmentation scheme is determined according to whether the second structural strength distribution conforms to a preset structural strength distribution.

3. The method according to claim 2, characterized in that Determining the segmentation scheme according to whether the second structural strength distribution conforms to a preset structural strength distribution includes: In a case where the structural strength distribution conforms to a preset structural strength distribution, determining a segmentation scheme for segmenting the target blade according to the segmentation positions; In the case that the structural strength distribution does not conform to the preset structural strength distribution, the segmentation position is adjusted, and a segmentation scheme for segmenting the target blade is determined according to the adjusted segmentation position.

4. The method according to claim 1, characterized in that: The first finite element analysis model of the target blade is established, including: Determining the rated wind speed and rated power of the wind turbine generator set, wherein the target blade is a blade on the wind turbine generator set; Determining a wind rotor swept area of ​​the target blade according to the rated wind speed and the rated power, and determining a blade length of the target blade according to the wind rotor swept area; A first finite element analysis model of the target blade is established according to the blade length.

5. The method according to claim 4, characterized in that Establishing a first finite element analysis model of a target blade according to the blade length includes: Calculating the lift and drag of the target blade at the rated wind speed and target angle of attack by aerodynamic theory; determining the aerodynamic load of the target blade according to the lift and the drag; A first finite element analysis model of the target blade is established according to the blade length and the aerodynamic load.

6. The method according to claim 5, characterized in that After establishing a first finite element analysis model of the target blade according to the blade length and the aerodynamic load, the method further includes: determining stress, strain and displacement of the first finite element analysis model under the aerodynamic load; Determine a first comparison result between the stress and a preset stress, a second comparison result between the strain and a preset strain, and a third comparison result between the displacement and a preset displacement; When the first comparison result indicates that the stress is greater than the preset stress, and / or the second comparison result indicates that the strain is greater than the preset strain, and / or the displacement is greater than the preset displacement, optimizing the ply of the target blade; A third finite element analysis model is established based on the optimized target blade, and a first structural strength distribution of the target blade is determined based on the third finite element analysis model.

7. A device for determining a segmentation scheme, characterized in that: include: a first determination module, configured to establish a first finite element analysis model of a target blade, and determine a first structural strength distribution of the target blade based on the first finite element analysis model; A second determination module is used to determine the load of each area of ​​the target blade according to the first structural strength distribution, and determine the target area according to the load of each area, wherein the target area is one or more areas with the lowest load; The third determination module is used to determine the segmentation position of the target blade according to the target area, and determine a segmentation scheme for segmenting the target blade according to the segmentation position.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein the method according to any one of claims 1 to 6 is executed when the program is executed.

9. An electronic device, comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to execute the method according to any one of claims 1 to 6 through the computer program.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.

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