Blade shape determination method and device, storage medium and electronic equipment

Abstract

The embodiment of the invention provides a blade appearance determination method and device, a storage medium and electronic device.The method comprises the steps that the airfoil chord length distribution rule and the airfoil torsion angle distribution rule of a target blade are determined according to the rated wind speed of a wind turbine generator system, and the target blade is the blade corresponding to the wind turbine generator system; determining airfoil profile chord length distribution and airfoil profile torsional angle distribution of the target blade according to the airfoil profile chord length distribution rule and the airfoil profile torsional angle distribution rule, and constructing the target blade based on the airfoil profile chord length distribution and the airfoil profile torsional angle distribution; performing pneumatic simulation according to the constructed target blades and the number of the blades of the wind turbine generator to determine a simulation result; and determining the aerodynamic performance of the wind turbine generator according to the simulation result, and determining the blade shape of the target blade according to the airfoil chord length distribution and the airfoil torsional angle distribution under the condition that the aerodynamic performance accords with the preset aerodynamic performance.

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 blade shape, a storage medium, and an electronic device. Background Art

[0002] In the field of wind power generation, the shape design of the blade has a decisive influence on the overall performance of the wind turbine, including its aerodynamic efficiency, load control, noise level and impact on the environment. However, in the prior art, determining the blade shape, especially the precise design of the vertical axis wind turbine blade, still faces major challenges.

[0003] The blade design parameters in the prior art are often fixed and are not adjusted with changes in external conditions such as the rated wind speed of the wind turbine, which limits the application flexibility of the blades under different wind conditions and reduces their versatility and adaptability.

[0004] With respect to the problem in the prior art that the blade shape cannot be accurately determined, no effective solution has been proposed yet.

[0005] Therefore, it is necessary to improve the related technology to overcome the above-mentioned defects in the related technology. Summary of the invention

[0006] The embodiments of the present application provide a method and device for determining a blade shape, a storage medium, and an electronic device, so as to at least solve the problem in the prior art that the blade shape cannot be accurately determined.

[0007] According to one embodiment of the present application, a method for determining a blade shape is provided, comprising: determining an airfoil chord length distribution law and an airfoil twist angle distribution law of a target blade according to a rated wind speed of the wind turbine generator set, wherein the target blade is a blade corresponding to the wind turbine generator set; determining an airfoil chord length distribution and an airfoil twist angle distribution of the target blade according to the airfoil chord length distribution law and the airfoil twist angle distribution law, and constructing the target blade based on the airfoil chord length distribution and the airfoil twist angle distribution; performing an aerodynamic simulation based on the constructed target blade and the number of blades of the wind turbine generator set to determine a simulation result; determining an aerodynamic performance of the wind turbine generator set based on the simulation result, and determining a blade shape of the target blade based on the airfoil chord length distribution and the airfoil twist angle distribution when the aerodynamic performance meets a preset aerodynamic performance.

[0008] In an exemplary embodiment, the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade are determined according to the rated wind speed of the wind turbine generator set, including: determining the rated wind speed and the rated power of the wind turbine generator set; determining a first unit efficiency of the wind turbine generator set according to the rated wind speed and the rated power; determining a first blade length of the target blade according to the first unit efficiency, and determining a corresponding first sample blade according to the first blade length; determining the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade according to the first sample blade.

[0009] In an exemplary embodiment, determining the first blade length of the target blade according to the first unit efficiency includes: determining a wind rotor swept area of ​​the wind turbine set according to the first unit efficiency, and determining a wind rotor height and a wind rotor radius of the wind turbine set according to the wind rotor swept area and a blade angle of the target blade; and determining a blade length of the target blade according to the wind rotor height and the wind rotor radius.

[0010] In an exemplary embodiment, the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade are determined based on the first sample blade, including: determining the airfoil chord length distribution and the airfoil twist angle distribution of each first sample blade along the airfoil span direction; determining the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade along the airfoil span direction according to the airfoil chord length distribution and the airfoil twist angle distribution of each first sample blade along the airfoil span direction.

[0011] In an exemplary embodiment, after determining the aerodynamic performance of the wind turbine according to the simulation results, the method further includes: determining the unit efficiency according to the aerodynamic performance; when the unit efficiency meets the preset unit efficiency, determining that the aerodynamic performance meets the preset aerodynamic performance; when the unit efficiency does not meet the preset unit efficiency, determining that the aerodynamic performance does not meet the preset aerodynamic performance.

[0012] In an exemplary embodiment, after determining the aerodynamic performance of the wind turbine according to the simulation results, the method further includes: when the aerodynamic performance does not meet the preset aerodynamic performance, adjusting the first unit efficiency according to the unit efficiency to obtain a second unit efficiency, wherein the first unit efficiency is determined according to the rated wind speed and the rated power of the wind turbine; determining the second blade length of the target blade according to the second unit efficiency, and determining the corresponding second sample blade according to the second blade length; determining the airfoil chord length distribution and the airfoil twist angle distribution of each second sample blade along the span direction of the airfoil; determining the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade along the span direction of the airfoil according to the airfoil chord length distribution and the airfoil twist angle distribution of each second sample blade along the span direction of the airfoil.

[0013] According to another embodiment of the present application, a device for determining a blade shape is provided, comprising: a first determination module, for determining an airfoil chord distribution law and an airfoil twist angle distribution law of a target blade according to a rated wind speed of the wind turbine, wherein the target blade is a blade corresponding to the wind turbine; a construction module, for determining an airfoil chord distribution law and an airfoil twist angle distribution law of the target blade according to the airfoil chord distribution law and the airfoil twist angle distribution law, and constructing the target blade based on the airfoil chord distribution and the airfoil twist angle distribution; a simulation module, for performing an aerodynamic simulation based on the constructed target blade and the number of blades of the wind turbine to determine a simulation result; a second determination module, for determining an aerodynamic performance of the wind turbine according to the simulation result, and determining a blade shape of the target blade according to the airfoil chord distribution and the airfoil twist angle distribution when the aerodynamic performance meets a preset aerodynamic performance.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] Through the present application, the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade are determined according to the rated wind speed of the wind turbine generator set, wherein the target blade is the blade corresponding to the wind turbine generator set; the airfoil chord length distribution and the airfoil twist angle distribution law of the target blade are determined, and the target blade is constructed based on the airfoil chord length distribution and the airfoil twist angle distribution; aerodynamic simulation is performed based on the constructed target blade and the number of blades of the wind turbine generator set to determine the simulation result; the aerodynamic performance of the wind turbine generator set is determined based on the simulation result, and when the aerodynamic performance meets the preset aerodynamic performance, the blade shape of the target blade is determined based on the airfoil chord length distribution and the airfoil twist angle distribution. In the embodiments of the present application, the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade are determined according to the rated wind speed, and the blade shape of the target blade is determined according to the airfoil chord length and the airfoil twist angle distribution law, so as to realize scientific and personalized blade design, so as to improve the performance of the wind turbine at the rated wind speed, and at the same time improve its adaptability to different wind speed zones. Therefore, the problem of not being able to accurately determine the blade shape can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] 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.

[0020] Figure 1 It is a hardware structure block diagram of a computer device for a method for determining a blade shape according to an embodiment of the present application;

[0021] Figure 2 is a flow chart (I) of a method for determining a blade shape according to an embodiment of the present application;

[0022] Figure 3 is a flow chart (II) of a method for determining a blade shape according to an embodiment of the present application;

[0023] Figure 4 It is a structural block diagram of a device for determining a blade shape according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] The embodiments of the present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] 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.

[0026] 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 blade shape 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.

[0027] 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 blade shape 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.

[0028] 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.

[0029] In this embodiment, a method for determining a blade shape is provided, which is applied to the above-mentioned computer device. Figure 2 is a flow chart (I) of a method for determining a blade shape according to an embodiment of the present application, such as Figure 2 As shown, the process includes the following steps:

[0030] Step S202, determining the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade according to the rated wind speed of the wind turbine generator set, wherein the target blade is the blade corresponding to the wind turbine generator set;

[0031] The airfoil chord length distribution and airfoil twist angle distribution of the target blade are determined according to the rated wind speed of the wind turbine. The airfoil chord length distribution refers to the variation of the chord length of the blade along its span direction (from the root to the tip), while the airfoil twist angle distribution describes the variation of the twist angle of the airfoil of each section of the blade along the span direction.

[0032] Step S204, determining the airfoil chord length distribution and the airfoil twist angle distribution of the target blade according to the airfoil chord length distribution law and the airfoil twist angle distribution law, and constructing the target blade based on the airfoil chord length distribution and the airfoil twist angle distribution;

[0033] According to the above determined airfoil chord length distribution law and airfoil twist angle distribution law, the airfoil design is performed for each section (different positions along the span) of the target blade. Therefore, each part of the blade will have different airfoil characteristics to adapt to changes in wind speed and wind direction.

[0034] Step S206, performing aerodynamic simulation according to the constructed target blades and the number of blades of the wind turbine generator set to determine the simulation result;

[0035] Optionally, the aerodynamic performance of the designed target blade is simulated by three-dimensional fluid dynamics (CFD) simulation software. The simulation process will simulate the flow field of the blade under various wind speed conditions and evaluate the lift, drag, torque and overall aerodynamic efficiency of the blade. The impact of blade design on wind turbine performance can then be quantified.

[0036] Step S208, determining the aerodynamic performance of the wind turbine according to the simulation result, and determining the blade shape of the target blade according to the airfoil chord length distribution and the airfoil twist angle distribution when the aerodynamic performance meets the preset aerodynamic performance.

[0037] Through the above steps, the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade are determined according to the rated wind speed of the wind turbine generator set, wherein the target blade is the blade corresponding to the wind turbine generator set; the airfoil chord length distribution and the airfoil twist angle distribution law of the target blade are determined, and the target blade is constructed based on the airfoil chord length distribution and the airfoil twist angle distribution; aerodynamic simulation is performed according to the constructed target blade and the number of blades of the wind turbine generator set to determine the simulation result; the aerodynamic performance of the wind turbine generator set is determined according to the simulation result, and when the aerodynamic performance meets the preset aerodynamic performance, the blade shape of the target blade is determined according to the airfoil chord length distribution and the airfoil twist angle distribution. In the embodiments of the present application, the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade are determined according to the rated wind speed, and the blade shape of the target blade is determined according to the airfoil chord length and the airfoil twist angle distribution law, so as to realize scientific and personalized blade design, so as to improve the performance of the wind turbine at the rated wind speed, and at the same time improve its adaptability to different wind speed zones. Therefore, the problem of not being able to accurately determine the blade shape can be solved.

[0038] In an exemplary embodiment, the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade are determined according to the rated wind speed of the wind turbine generator set, including: determining the rated wind speed and the rated power of the wind turbine generator set; determining a first unit efficiency of the wind turbine generator set according to the rated wind speed and the rated power; determining a first blade length of the target blade according to the first unit efficiency, and determining a corresponding first sample blade according to the first blade length; determining the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade according to the first sample blade.

[0039] The rated wind speed defines the wind speed condition under which a wind turbine can achieve its highest designed efficiency, while the rated power is the maximum electrical power that a wind turbine is expected to output under this wind speed condition.

[0040] The unit efficiency is a comprehensive indicator that reflects the ability of a wind turbine to convert wind energy into electrical energy. Through the rated wind speed and rated power, the embodiment of the present application can estimate the first unit efficiency of the wind turbine under rated conditions, for example, by predicting through a large model, or by establishing a functional relationship between the rated wind speed, rated power and unit efficiency, and predicting based on the functional relationship.

[0041] Blade length is one of the key geometric parameters that affect the performance of wind turbines, and is directly related to the wind rotor swept area and energy capture capability. Based on the efficiency of the first unit and the preset performance target, the blade length required to achieve the expected efficiency, i.e., the first blade length, can be reversely calculated.

[0042] Based on the first blade length, a first sample blade corresponding to the first blade length is determined, wherein the blade length of the first sample blade is within a preset blade length range, and the preset blade length range may be [first blade length-n, first blade length+m]. Then, the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade are determined according to the airfoil chord length distribution law and the airfoil twist angle distribution law of the first sample blade.

[0043] In an exemplary embodiment, determining the first blade length of the target blade according to the first unit efficiency includes: determining a wind rotor swept area of ​​the wind turbine set according to the first unit efficiency, and determining a wind rotor height and a wind rotor radius of the wind turbine set according to the wind rotor swept area and a blade angle of the target blade; and determining a blade length of the target blade according to the wind rotor height and the wind rotor radius.

[0044] The wind swept area of ​​the wind rotor refers to the circular area perpendicular to the wind direction covered by the wind rotor when it rotates. The size of this area directly affects the wind energy that the unit can capture, and thus affects the efficiency of the unit. In the embodiment of the present application, the ideal wind swept area of ​​the wind rotor is first calculated based on the first unit efficiency, that is, the efficiency of the wind turbine unit in converting wind energy into electrical energy under rated conditions. Then, the energy conversion formula can be used to consider factors such as wind speed, air density, and wind rotor speed to ensure that the wind energy captured by the wind rotor matches the power output and efficiency targets of the unit.

[0045] After the wind rotor swept area is determined, the height and radius of the wind rotor are further calculated. The determination of the height and radius of the wind rotor is based on the blade angle and the swept area, because the blade angle affects the geometry of the wind rotor and the wind energy capture efficiency, and there is a direct relationship between the swept area and the height and radius of the wind rotor. By combining the blade angle, the wind rotor swept area, and other design parameters of the wind turbine (such as the number of blades, the ratio of the wind rotor diameter to the height, etc.), the ideal height and radius of the wind rotor can be calculated. This calculation process involves complex geometric and fluid dynamics analysis to ensure that the structural design of the wind rotor is coordinated with the aerodynamic performance.

[0046] After determining the height and radius of the wind rotor, the target blade length is determined based on the wind rotor geometric parameters.

[0047] In an exemplary embodiment, the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade are determined based on the first sample blade, including: determining the airfoil chord length distribution and the airfoil twist angle distribution of each first sample blade along the airfoil span direction; determining the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade along the airfoil span direction according to the airfoil chord length distribution and the airfoil twist angle distribution of each first sample blade along the airfoil span direction.

[0048] By analyzing the first sample blade, the chord length and twist angle data of each section (different positions along the span of the airfoil) are determined and analyzed to find the distribution law hidden in the data. Specifically: through statistical analysis, curve fitting and mathematical modeling, the chord length and twist angle distribution values ​​of the first sample blade are converted into mathematical expressions or laws that can describe the chord length and twist angle change trends in the entire span direction.

[0049] In an exemplary embodiment, after determining the aerodynamic performance of the wind turbine according to the simulation results, the method further includes: determining the unit efficiency according to the aerodynamic performance; when the unit efficiency meets the preset unit efficiency, determining that the aerodynamic performance meets the preset aerodynamic performance; when the unit efficiency does not meet the preset unit efficiency, determining that the aerodynamic performance does not meet the preset aerodynamic performance.

[0050] Aerodynamic performance is the basis for evaluating its unit efficiency. Unit efficiency here refers to the efficiency of the blade in converting wind energy into mechanical energy (or electrical energy) within a given wind speed range. Based on the aerodynamic performance data in the simulation results, the overall conversion efficiency at rated wind speed and other operating wind speeds, that is, the unit efficiency of the blade, is calculated.

[0051] When the unit efficiency verification result meets the preset unit efficiency, it can be determined that the aerodynamic performance has also reached the preset aerodynamic performance standard. If the unit efficiency evaluation result does not meet the preset standard, this feedback will be regarded as a signal of insufficient design, and the aerodynamic performance parameters will be adjusted and optimized.

[0052] In an exemplary embodiment, after determining the aerodynamic performance of the wind turbine according to the simulation results, the method further includes: when the aerodynamic performance does not meet the preset aerodynamic performance, adjusting the first unit efficiency according to the unit efficiency to obtain a second unit efficiency, wherein the first unit efficiency is determined according to the rated wind speed and the rated power of the wind turbine; determining the second blade length of the target blade according to the second unit efficiency, and determining the corresponding second sample blade according to the second blade length; determining the airfoil chord length distribution and the airfoil twist angle distribution of each second sample blade along the span direction of the airfoil; determining the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade along the span direction of the airfoil according to the airfoil chord length distribution and the airfoil twist angle distribution of each second sample blade along the span direction of the airfoil.

[0053] When the aerodynamic performance does not meet expectations, the first unit efficiency is adjusted based on the determined unit efficiency according to the rated wind speed and the rated power to obtain the second unit efficiency. The unit efficiency reflects the efficiency of the wind turbine in converting wind energy into electrical energy.

[0054] The first unit efficiency is adjusted based on the determined unit efficiency to obtain the second unit efficiency, including: when the unit efficiency is less than the first unit efficiency, reducing the first unit efficiency to obtain the second unit efficiency; when the unit efficiency is greater than the first unit efficiency, increasing the first unit efficiency to obtain the second unit efficiency.

[0055] The second blade length is determined based on the new efficiency target. Subsequently, the second sample blade is determined based on the second blade length. The airfoil chord length and airfoil twist angle data of the second sample blade at different spanwise heights are analyzed, and new airfoil parameter distribution laws are established through mathematical fitting or empirical analysis. These laws will guide the optimal design of the target blade to ensure that the aerodynamic performance of the blade can reach or exceed the preset aerodynamic performance standards under the new design parameters.

[0056] In order to better understand the process of the above-mentioned method for determining the blade shape, the implementation method flow of the above-mentioned blade shape determination 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.

[0057] In this embodiment, a method for determining a blade shape is provided. Figure 3 Flowchart (II) of the method for determining the blade shape according to an embodiment of the present application, such as Figure 3 As shown, the specific steps are as follows:

[0058] Step S301: determining the rated power and rated wind speed set for the wind turbine generator set;

[0059] Step S302: estimating wind turbine efficiency according to the rated power and the rated wind speed;

[0060] Step S303: determining the wind rotor swept area of ​​the wind turbine according to the wind turbine efficiency;

[0061] Step S304: Calculate the height and radius of the wind rotor according to the wind rotor swept area and the blade angle;

[0062] Step S305: determining the blade length according to the wind rotor height and the wind rotor radius;

[0063] Step S306: determining N standard airfoils according to the blade length;

[0064] Step S307: determining the airfoil chord length distribution and airfoil twist angle distribution corresponding to the N standard airfoils;

[0065] Step S308: determining the airfoil chord length distribution rule and the airfoil twist angle distribution rule according to the airfoil chord length distribution and the airfoil twist angle distribution corresponding to the N standard airfoils;

[0066] Step S309: determining the geometric shape of the target blade according to the airfoil chord length distribution law and the airfoil twist angle distribution law;

[0067] Step S310: determining the number of blades of the wind turbine;

[0068] Step S311: performing aerodynamic simulation on the wind turbine generator set to determine the aerodynamic performance of the wind turbine generator set;

[0069] Step S312: determining whether the unit efficiency of the wind turbine generator set meets the preset unit efficiency according to the aerodynamic performance, wherein the aerodynamic performance includes: the unit efficiency; if it does not meet the preset unit efficiency, executing step S314, and if it meets the preset unit efficiency, executing step S313;

[0070] Step S313: Determine whether the comprehensive performance of the wind turbine generator system meets the preset comprehensive performance; if it meets the preset comprehensive performance, execute step S315; if it does not meet the preset comprehensive performance, execute step S306;

[0071] Step S314: re-determine the unit efficiency according to the unit efficiency obtained by simulation;

[0072] Step S306 is executed to determine N standard airfoils for re-determining the blade length, wherein the re-determined N standard airfoils are different from the previous N standard airfoils in at least one aspect.

[0073] Step S315: Determine the geometric shape of the blade.

[0074] 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.

[0075] In this embodiment, a device for determining a blade shape is also provided, and the device is used to implement the above-mentioned embodiments and preferred embodiments, and the descriptions that have been made will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware of a predetermined function. Although the device described in the following embodiments is preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0076] Figure 4is a structural block diagram of a device for determining a blade shape according to an embodiment of the present application, such as Figure 4 As shown, the device comprises:

[0077] A first determination module 42 is used to determine the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade according to the rated wind speed of the wind turbine generator set, wherein the target blade is a blade corresponding to the wind turbine generator set;

[0078] A construction module 44 is used to determine the airfoil chord length distribution and the airfoil twist angle distribution of the target blade according to the airfoil chord length distribution law and the airfoil twist angle distribution law, and construct the target blade based on the airfoil chord length distribution and the airfoil twist angle distribution;

[0079] A simulation module 46, configured to perform aerodynamic simulation according to the constructed target blades and the number of blades of the wind turbine to determine a simulation result;

[0080] The second determination module 48 is used to determine the aerodynamic performance of the wind turbine according to the simulation result, and determine the blade shape of the target blade according to the airfoil chord length distribution and the airfoil twist angle distribution when the aerodynamic performance meets the preset aerodynamic performance.

[0081] By means of the above-mentioned device, the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade are determined according to the rated wind speed of the wind turbine generator set, wherein the target blade is the blade corresponding to the wind turbine generator set; the airfoil chord length distribution and the airfoil twist angle distribution law of the target blade are determined, and the target blade is constructed based on the airfoil chord length distribution and the airfoil twist angle distribution; aerodynamic simulation is performed according to the constructed target blade and the number of blades of the wind turbine generator set to determine the simulation result; the aerodynamic performance of the wind turbine generator set is determined according to the simulation result, and when the aerodynamic performance meets the preset aerodynamic performance, the blade shape of the target blade is determined according to the airfoil chord length distribution and the airfoil twist angle distribution. In the embodiments of the present application, the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade are determined according to the rated wind speed, and the blade shape of the target blade is determined according to the airfoil chord length and the airfoil twist angle distribution law, so as to realize scientific and personalized blade design, so as to improve the performance of the wind turbine at the rated wind speed, and at the same time improve its adaptability to different wind speed zones. Therefore, the problem of not being able to accurately determine the blade shape can be solved.

[0082] In an exemplary embodiment, the first determination module 42 is used to determine the rated wind speed and rated power of the wind turbine; determine the first unit efficiency of the wind turbine according to the rated wind speed and the rated power; determine the first blade length of the target blade according to the first unit efficiency, and determine the corresponding first sample blade according to the first blade length; determine the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade according to the first sample blade.

[0083] In an exemplary embodiment, the first determination module 42 is used to determine the rotor swept area of ​​the wind turbine set according to the first unit efficiency, and determine the rotor height and rotor radius of the wind turbine set according to the rotor swept area and the blade angle of the target blade; and determine the blade length of the target blade according to the rotor height and the rotor radius.

[0084] In an exemplary embodiment, the first determination module 42 is used to determine the airfoil chord length distribution and the airfoil twist angle distribution of each first sample blade along the airfoil span direction; and determine the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade along the airfoil span direction based on the airfoil chord length distribution and the airfoil twist angle distribution of each first sample blade along the airfoil span direction.

[0085] In an exemplary embodiment, the second determination module 48 is used to determine the unit efficiency based on the aerodynamic performance; when the unit efficiency meets the preset unit efficiency, determine that the aerodynamic performance meets the preset aerodynamic performance; when the unit efficiency does not meet the preset unit efficiency, determine that the aerodynamic performance does not meet the preset aerodynamic performance.

[0086] In an exemplary embodiment, a second determination module 48 is used to adjust the first unit efficiency according to the unit efficiency to obtain a second unit efficiency when the aerodynamic performance does not meet the preset aerodynamic performance, wherein the first unit efficiency is determined according to the rated wind speed and the rated power of the wind turbine; determine the second blade length of the target blade according to the second unit efficiency, and determine the corresponding second sample blade according to the second blade length; determine the airfoil chord length distribution and the airfoil twist angle distribution of each second sample blade along the span direction of the airfoil; determine the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade along the span direction of the airfoil according to the airfoil chord length distribution and the airfoil twist angle distribution of each second sample blade along the span direction of the airfoil.

[0087] 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.

[0088] 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.

[0089] Optionally, in this embodiment, the storage medium may be configured to store program codes for executing the following steps:

[0090] S1, determining a distribution law of an airfoil chord length and an airfoil twist angle of a target blade according to a rated wind speed of the wind turbine generator set, wherein the target blade is a blade corresponding to the wind turbine generator set;

[0091] S2, determining the airfoil chord length distribution and the airfoil twist angle distribution of the target blade according to the airfoil chord length distribution law and the airfoil twist angle distribution law, and constructing the target blade based on the airfoil chord length distribution and the airfoil twist angle distribution;

[0092] S3, performing aerodynamic simulation according to the constructed target blades and the number of blades of the wind turbine generator set to determine a simulation result;

[0093] S4, determining the aerodynamic performance of the wind turbine generator set according to the simulation result, and determining the blade shape of the target blade according to the airfoil chord length distribution and the airfoil twist angle distribution when the aerodynamic performance meets the preset aerodynamic performance.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] Optionally, in this embodiment, the processor may be configured to perform the following steps through a computer program:

[0098] S1, determining a distribution law of an airfoil chord length and an airfoil twist angle of a target blade according to a rated wind speed of the wind turbine generator set, wherein the target blade is a blade corresponding to the wind turbine generator set;

[0099] S2, determining the airfoil chord length distribution and the airfoil twist angle distribution of the target blade according to the airfoil chord length distribution law and the airfoil twist angle distribution law, and constructing the target blade based on the airfoil chord length distribution and the airfoil twist angle distribution;

[0100] S3, performing aerodynamic simulation according to the constructed target blades and the number of blades of the wind turbine generator set to determine a simulation result;

[0101] S4, determining the aerodynamic performance of the wind turbine generator set according to the simulation result, and determining the blade shape of the target blade according to the airfoil chord length distribution and the airfoil twist angle distribution when the aerodynamic performance meets the preset aerodynamic performance.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] Optionally, in this embodiment, the processor may be configured to perform the following steps through a computer program:

[0106] S1, determining a distribution law of an airfoil chord length and an airfoil twist angle of a target blade according to a rated wind speed of the wind turbine generator set, wherein the target blade is a blade corresponding to the wind turbine generator set;

[0107] S2, determining the airfoil chord length distribution and the airfoil twist angle distribution of the target blade according to the airfoil chord length distribution law and the airfoil twist angle distribution law, and constructing the target blade based on the airfoil chord length distribution and the airfoil twist angle distribution;

[0108] S3, performing aerodynamic simulation according to the constructed target blades and the number of blades of the wind turbine generator set to determine a simulation result;

[0109] S4, determining the aerodynamic performance of the wind turbine generator set according to the simulation result, and determining the blade shape of the target blade according to the airfoil chord length distribution and the airfoil twist angle distribution when the aerodynamic performance meets the preset aerodynamic performance.

[0110] 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.

[0111] 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.

[0112] 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 blade shape, characterized in that: include: Determine the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade according to the rated wind speed of the wind turbine generator set, wherein the target blade is the blade corresponding to the wind turbine generator set; Determining the airfoil chord length distribution and the airfoil twist angle distribution of the target blade according to the airfoil chord length distribution law and the airfoil twist angle distribution law, and constructing the target blade based on the airfoil chord length distribution and the airfoil twist angle distribution; Performing aerodynamic simulation according to the constructed target blades and the number of blades of the wind turbine to determine the simulation result; The aerodynamic performance of the wind turbine generator set is determined according to the simulation result, and when the aerodynamic performance meets the preset aerodynamic performance, the blade shape of the target blade is determined according to the airfoil chord length distribution and the airfoil twist angle distribution.

2. The method according to claim 1, characterized in that The airfoil chord length distribution law and airfoil twist angle distribution law of the target blade are determined according to the rated wind speed of the wind turbine, including: Determining the rated wind speed and rated power of the wind turbine generator set; Determining a first unit efficiency of the wind turbine generator set according to the rated wind speed and the rated power; Determine a first blade length of the target blade according to the first unit efficiency, and determine a corresponding first sample blade according to the first blade length; The airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade are determined according to the first sample blade.

3. The method according to claim 2, characterized in that Determining a first blade length of the target blade according to the first unit efficiency includes: Determine a wind rotor swept area of ​​the wind turbine set according to the efficiency of the first unit, and determine a wind rotor height and a wind rotor radius of the wind turbine set according to the wind rotor swept area and a blade angle of the target blade; The blade length of the target blade is determined according to the wind rotor height and the wind rotor radius.

4. The method according to claim 2, characterized in that: Determining the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade according to the first sample blade includes: Determine the airfoil chord length distribution and the airfoil twist angle distribution of each first sample blade along the airfoil span direction; The airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade along the airfoil span direction are determined according to the airfoil chord length distribution and the airfoil twist angle distribution of each first sample blade along the airfoil span direction.

5. The method according to claim 1, characterized in that After determining the aerodynamic performance of the wind turbine generator set according to the simulation results, the method further includes: Determining the unit efficiency of the wind turbine generator set according to the aerodynamic performance; In the case where the unit efficiency meets the preset unit efficiency, determining that the aerodynamic performance meets the preset aerodynamic performance; When the unit efficiency does not meet the preset unit efficiency, it is determined that the aerodynamic performance does not meet the preset aerodynamic performance.

6. The method according to claim 5, characterized in that After determining the aerodynamic performance of the wind turbine generator set according to the simulation results, the method further includes: When the aerodynamic performance does not meet the preset aerodynamic performance, adjusting the first unit efficiency according to the unit efficiency to obtain a second unit efficiency, wherein the first unit efficiency is determined according to the rated wind speed and rated power of the wind turbine; Determine a second blade length of the target blade according to the second unit efficiency, and determine a corresponding second sample blade according to the second blade length; Determine the airfoil chord length distribution and the airfoil twist angle distribution of each second sample blade along the airfoil span direction; The airfoil chord length distribution rule and the airfoil twist angle distribution rule of the target blade along the airfoil span direction are determined according to the airfoil chord length distribution and the airfoil twist angle distribution of each second sample blade along the airfoil span direction.

7. A device for determining a blade shape, characterized in that: include: A first determination module is used to determine the airfoil chord length distribution law and the airfoil twist angle distribution law of the target blade according to the rated wind speed of the wind turbine generator set, wherein the target blade is a blade corresponding to the wind turbine generator set; A construction module, used to determine the airfoil chord length distribution and the airfoil twist angle distribution of the target blade according to the airfoil chord length distribution law and the airfoil twist angle distribution law, and construct the target blade based on the airfoil chord length distribution and the airfoil twist angle distribution; A simulation module, used for performing aerodynamic simulation according to the constructed target blades and the number of blades of the wind turbine to determine the simulation result; The second determination module is used to determine the aerodynamic performance of the wind turbine according to the simulation result, and determine the blade shape of the target blade according to the airfoil chord length distribution and the airfoil twist angle distribution when the aerodynamic performance meets the preset aerodynamic performance.

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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