Transmission system design parameter optimization method and device based on complete machine dynamics simulation of draught fan

Abstract

The invention relates to the technical field of wind generating sets, and discloses a transmission system design parameter optimization method and device based on fan complete machine dynamics simulation, and the method comprises the steps: constructing a complete machine dynamics model and a rigid body transmission system dynamics model; assembling the complete machine dynamic model and the rigid body transmission system dynamic model to obtain a rigid-flexible coupling complete machine refined dynamic model; operating parameters of the rigid-flexible coupling complete machine refined dynamic model during simulation are collected, and simulation operating parameters are obtained; and performing optimization processing on the design parameters of the rigid-flexible coupling complete machine refined dynamic model by adopting the simulation operation parameters to obtain optimized design parameters. The method is used for predicting resonance risk points and resonance excitation sources through analysis and modal shape analysis; the method can be used for analyzing the influence of a main bearing, a box body, a planet carrier, a gear load transmission path, a shaft system deformation condition, an emergency shutdown condition, a paddle clamping power-down condition, a short-circuit condition and other working conditions on key stressed parts of a transmission system under the limit load.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine generator sets, and in particular to a method and device for optimizing design parameters of a transmission system based on wind turbine whole machine dynamics simulation. Background Art

[0002] In order to accelerate the development of deep sea wind resources, foreign complete machine manufacturers continue to launch offshore wind turbines with larger power and wind rotor diameter. The trend of large-scale development of wind turbines has become a foregone conclusion, and the high-power density fully integrated transmission route is an inevitable choice for large-scale and low-cost units.

[0003] Since large offshore wind turbines face multi-field coupling excitations of hydrodynamics, aerodynamics, structural dynamics, and mechatronics, the dynamic characteristics of the fully integrated transmission system are extremely complex.

[0004] Conventional Bladed load simulation software has obvious deficiencies in building refined transmission model. It cannot consider the influence of variable stiffness excitation, time-varying error excitation, meshing impact and tooth side clearance on transmission chain load and whole machine vibration, resulting in many potential transmission load and vibration stability problems that cannot be accurately simulated, which are the key factors affecting transmission failure. In addition, in previous studies, the optimization of key design parameters of fan transmission system ignored the role of coupled excitation of fan aerodynamics and whole machine structural dynamics, which has certain limitations. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention proposes a method and device for optimizing the design parameters of a transmission system based on the dynamics simulation of a whole wind turbine, so as to solve the above-mentioned technical problems.

[0006] In a first aspect, a method for optimizing design parameters of a transmission system based on dynamics simulation of a wind turbine is provided, comprising:

[0007] Construct the whole machine dynamics model and rigid body transmission system dynamics model respectively;

[0008] Assembling the whole machine dynamics model and the rigid body transmission system dynamics model to obtain a rigid-flexible coupling whole machine refined dynamics model;

[0009] Collecting the operating parameters of the rigid-flexible coupling whole machine refined dynamics model during simulation to obtain simulation operating parameters;

[0010] The simulation operation parameters are used to optimize the design parameters of the refined dynamics model of the rigid-flexible coupling whole machine to obtain optimized design parameters.

[0011] Furthermore, the construction of the whole machine dynamics model includes:

[0012] Extracting data from the first model of the wind turbine generator set to obtain blade data and tower data in the first model;

[0013] The blade data is used to construct a model to obtain a flexible blade sub-model of the beam unit, and the tower data is used to construct a model to obtain a tower data sub-model of the beam unit;

[0014] Extract attribute data of the yaw system, gearbox, nacelle cover, and hub components in the wind turbine solid 3D model to obtain the mass, inertia, and center of gravity information of the wind turbine components;

[0015] Modeling the mass, inertia, and center of gravity information of the fan components to obtain sub-models corresponding to m fan components;

[0016] The flexible blade sub-model, the flexible tower sub-model and the sub-models corresponding to the m wind turbine components are assembled to obtain a whole machine dynamics model.

[0017] Furthermore, the construction of the rigid body transmission system dynamics model includes:

[0018] Draw the mechanical topology diagram based on the three-dimensional model of the transmission system;

[0019] The mechanical topological structure diagram is used to construct a model to obtain a rigid body transmission system dynamics model.

[0020] Furthermore, the whole machine dynamics model and the rigid body transmission system dynamics model are assembled to obtain a rigid-flexible coupling whole machine refined dynamics model, including:

[0021] Performing flexible processing on key components in the rigid body transmission system dynamics model to obtain a flexible transmission system mechanical model;

[0022] The flexible transmission system mechanical model and the whole machine dynamics model are assembled to obtain a rigid-flexible coupling whole machine refined dynamics model.

[0023] Furthermore, the simulation operation parameters are used to optimize the design parameters of the refined dynamics model of the rigid-flexible coupling whole machine to obtain the optimized design parameters, including:

[0024] Obtaining design parameters that need to be optimized in the dynamic model simulation results, wherein the design parameters include the main shaft stiffness of the transmission chain, the main bearing span, the gear box tooth root height, the tooth addendum height, and the displacement coefficient;

[0025] The design parameters that need to be optimized are optimized according to the optimization algorithm to obtain optimization results of the design parameters.

[0026] In a second aspect, a device for optimizing design parameters of a transmission system based on dynamics simulation of a wind turbine is provided, which is characterized by comprising:

[0027] A construction module, used to construct a whole machine dynamics model and a rigid body transmission system dynamics model respectively;

[0028] An assembly module assembles the whole machine dynamics model and the rigid body transmission system dynamics model to obtain a rigid-flexible coupling whole machine refined dynamics model;

[0029] A simulation module, used to collect the operating parameters of the rigid-flexible coupling whole machine refined dynamics model during simulation to obtain simulation operating parameters;

[0030] The optimization processing module is used to optimize the design parameters of the refined dynamics model of the rigid-flexible coupling whole machine by using the simulation operation parameters to obtain the optimized design parameters.

[0031] In a third aspect, a transmission system design parameter optimization device based on the whole-machine dynamics simulation of a wind turbine is provided, comprising a processor and a memory storing program instructions, wherein the processor is used to execute a transmission system design parameter optimization method based on the whole-machine dynamics simulation of a wind turbine as described in any one of the foregoing items when running the program instructions.

[0032] In a fourth aspect, an electronic device is provided, comprising the aforementioned device for optimizing transmission system design parameters based on wind turbine whole machine dynamics simulation.

[0033] In a fifth aspect, a storage medium is provided, storing program instructions, which, when run, execute a method for optimizing transmission system design parameters based on wind turbine whole machine dynamics simulation as described in any of the foregoing items.

[0034] The invention adopting the above technical solution has the following advantages:

[0035] The present invention builds a large offshore wind turbine unit fine dynamics simulation model of wind wheel-fine transmission system-tower-foundation multi-system coupling in Simpack software, and develops an automatic optimization platform for key design parameters of the transmission system in conjunction with Isight multidisciplinary simulation software. The platform can be used to predict resonance risk points and resonance excitation sources through transmission system sweep frequency analysis and modal vibration type analysis; it can analyze the main bearing, housing, planetary frame, gear load transfer path, shaft system deformation under extreme load, as well as the impact of emergency shutdown conditions, propeller power-off conditions, short-circuit conditions and other conditions on key load-bearing components of the transmission system such as bearings and primary planetary frames, and evaluate the design safety and reliability of the wind turbine transmission system; with the gearbox gear tooth top height, tooth root height, displacement coefficient, main shaft stiffness, and main shaft bearing span as optimization variables, the transmission system bearing load size can be automatically optimized to improve the wind turbine design efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific implementation of the present invention, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0037] Figure 1 It is a flow chart of a method for optimizing design parameters of a transmission system based on dynamics simulation of a whole wind turbine according to the present invention;

[0038] Figure 2 This is a flow chart of the refined dynamics simulation analysis of the whole machine in a method for optimizing the design parameters of a transmission system based on the dynamics simulation of the whole machine of a wind turbine according to the present invention;

[0039] Figure 3 A diagram of the dynamics model of a Simpack flexible blade in a method for optimizing the design parameters of a transmission system based on dynamics simulation of a complete wind turbine according to the present invention;

[0040] Figure 4 It is a diagram of the dynamic model of the Simpack flexible tower in a method for optimizing the design parameters of a transmission system based on dynamic simulation of a wind turbine as a whole in the present invention;

[0041] Figure 5 A diagram of the wind turbine overall dynamics model in a method for optimizing design parameters of a transmission system based on wind turbine overall dynamics simulation according to the present invention;

[0042] Figure 6 A topological structure diagram of a wind turbine gearbox in a transmission system design parameter optimization method based on wind turbine whole machine dynamics simulation according to the present invention;

[0043] Figure 7 It is a condensation analysis diagram of a planetary carrier of a transmission system in a transmission system design parameter optimization method based on dynamics simulation of a whole wind turbine according to the present invention;

[0044] Figure 8 A diagram of a process of modeling a transmission system dynamics model in a transmission system design parameter optimization method based on wind turbine whole machine dynamics simulation according to the present invention;

[0045] Fig. 9 A diagram of setting transmission system vibration measurement points in a transmission system design parameter optimization method based on wind turbine whole machine dynamics simulation according to the present invention;

[0046] Fig.10 It is a three-dimensional Campbell diagram of the transmission system frequency sweep in a transmission system design parameter optimization method based on the dynamics simulation of the whole wind turbine according to the present invention;

[0047] Fig.11A diagram showing the setting of transmission system deformation measuring points in a transmission system design parameter optimization method based on wind turbine whole machine dynamics simulation according to the present invention;

[0048] Fig.12 It is a diagram of the deformation result of the transmission system in a transmission system design parameter optimization method based on the dynamics simulation of the whole wind turbine according to the present invention;

[0049] Fig.13 A diagram showing the setting of transmission system bearing load measurement points in a transmission system design parameter optimization method based on wind turbine whole machine dynamics simulation according to the present invention;

[0050] Fig.14 A transmission system bearing load result diagram in a transmission system design parameter optimization method based on wind turbine whole machine dynamics simulation according to the present invention;

[0051] Fig.15 It is a functional module diagram of the gearbox optimization design process in a transmission system design parameter optimization method based on wind turbine whole machine dynamics simulation of the present invention;

[0052] Fig.16 It is a definition diagram of optimization variables in a method for optimizing design parameters of a transmission system based on dynamics simulation of a whole fan according to the present invention;

[0053] Fig.17 It is a diagram for defining an optimization target in a method for optimizing design parameters of a transmission system based on dynamics simulation of a complete wind turbine according to the present invention;

[0054] Fig.18 The present invention is a flow chart of a device for optimizing transmission system design parameters based on dynamics simulation of a wind turbine. DETAILED DESCRIPTION

[0055] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0056] like Figures 1 to 18 As shown, a method for optimizing transmission system design parameters based on wind turbine whole machine dynamics simulation of the present invention comprises:

[0057] Step S01, constructing a whole machine dynamics model and a rigid body transmission system dynamics model respectively;

[0058] Step S02, assembling the whole machine dynamics model and the rigid body transmission system dynamics model to obtain a rigid-flexible coupling whole machine refined dynamics model;

[0059] Step S03, collecting the operating parameters of the rigid-flexible coupling whole machine refined dynamics model during simulation to obtain simulation operating parameters;

[0060] Step S04: optimizing the design parameters of the refined dynamics model of the rigid-flexible coupling whole machine using simulation operation parameters to obtain optimized design parameters.

[0061] Specifically, the present invention builds a large offshore wind turbine unit fine dynamics simulation model of wind wheel-fine transmission system-tower-foundation multi-system coupling in Simpack software, and develops an automatic optimization platform for key design parameters of the transmission system in conjunction with Isight multidisciplinary simulation software. The platform can be used to predict resonance risk points and resonance excitation sources through transmission system sweep frequency analysis and modal vibration analysis; it can analyze the main bearing, housing, planetary frame, gear load transfer path, shaft system deformation under extreme load, as well as the impact of emergency shutdown conditions, propeller power-off conditions, short-circuit conditions and other conditions on key load-bearing components of the transmission system such as bearings and primary planetary frames, and evaluate the design safety and reliability of the wind turbine transmission system; with the gearbox gear tooth top height, tooth root height, displacement coefficient, main shaft stiffness, and main shaft bearing span as optimization variables, the transmission system bearing load size can be automatically optimized to improve the design efficiency of the wind turbine.

[0062] In some embodiments, constructing a whole machine dynamics model includes:

[0063] Extract data from the first model (Bladed model) of the wind turbine generator set to obtain blade data and tower data in the first model;

[0064] The blade data is used to construct the model, and the flexible blade sub-model of the beam element is obtained. The tower data is used to construct the model, and the tower data sub-model of the beam element is obtained.

[0065] Extract attribute data of the yaw system, gearbox, nacelle cover, and hub components in the wind turbine solid 3D model to obtain the mass, inertia, and center of gravity information of the wind turbine components;

[0066] Model the mass, inertia, and center of gravity information of the fan components to obtain sub-models corresponding to m fan components;

[0067] The flexible blade sub-model, the flexible tower sub-model and the sub-models corresponding to the m wind turbine components are assembled to obtain the dynamic model of the whole machine.

[0068] Specifically, the blade geometry data, swing and flapping frequency data, stiffness and mass data in the Bladed model of the wind turbine are extracted, and the data are written into a .rbl file that can be recognized by Simpack. The file is then imported into the Simpack blade generator module to generate a flexible blade sub-model of the beam element, such as Figure 3 .

[0069] Similarly, the geometric data, stiffness and mass data of the tower height and diameter in the Bladed model are extracted, and the flexible tower model of the beam element is generated in the Simpack software, such as Figure 4 .

[0070] According to the solid 3D model of the wind turbine, the mass, inertia and center of gravity information of the yaw system, gearbox, nacelle cover, hub and other components are extracted. In the Simpack software, simple sub-models of the yaw system, gearbox system, hub system and nacelle cover system are established using mass blocks.

[0071] Finally, the blade, tower, simple yaw, gearbox and other sub-models are assembled into a simple Simpack whole machine dynamics model, such as Figure 5 .

[0072] In order to simulate the dynamic behavior of wind turbines under different working conditions, wind load files under different working conditions are compiled and imported into AeroDyn software to generate corresponding aerodynamic loads. Since Bladed software and Simpack software have certain similarities, in order to realize the motion control of the whole wind turbine, the controller of the Bladed model is converted into a controller file that can be recognized by the Simpack software interface. Using the 243: Wind Controller Interface force element, the controller program encapsulated by the Bladed software is implanted into the Simpack software to control the motion logic of the wind turbine. Then, the correctness of the simple dynamic model of the whole machine is checked by comparing the modal, mass, damping, load and other information of the Bladed model and the Simpack model, as well as the motion logic.

[0073] In some embodiments, constructing a rigid body transmission system dynamics model includes:

[0074] Draw the mechanical topology diagram based on the three-dimensional model of the transmission system;

[0075] The mechanical topological structure diagram is used to construct the model and obtain the dynamic model of the rigid body transmission system.

[0076] Specifically, at the same time, a dynamic topological structure diagram is drawn based on the three-dimensional model of the wind turbine transmission chain entity, such as Figure 6, a pure rigid body Simpack transmission chain dynamics model is established, in which 25:Gear Wheel force element is used to perform fine modeling of gear profile, including gear tooth direction and tooth top profile modification, 225:Gear Pair force element is used to establish gear meshing relationship, 88:Rolling Bearing force element is used to establish main shaft bearing and all planetary carrier bearing models, 41:Spring-Damper MatrixCmp force element is used to input the six-degree-of-freedom diagonal stiffness matrix of the bearing to establish all planetary wheel bearing models, 242:SplineCoupling force element is used to establish all spline meshing relationships, and 50:ForeTorque Expression Cmp force element is used to apply the generator feedback torque curve to the generator rotor.

[0077] In some embodiments, the whole machine dynamics model and the rigid body transmission system dynamics model are assembled to obtain a rigid-flexible coupling whole machine refined dynamics model, including:

[0078] The key components in the rigid body transmission system dynamics model are made flexible to obtain a flexible transmission system mechanical model.

[0079] The mechanical model of the flexible transmission system and the dynamic model of the whole machine are assembled to obtain a refined dynamic model of the rigid-flexible coupling whole machine.

[0080] Specifically, after the model is checked and found to be correct, the transmission system is processed flexibly. When processing the flexibility of key components of the transmission system, the vibration energy analysis method is used to find the location and number of the condensation points of the flexible components, and the natural frequency comparison method is used to find the modal truncation order of the flexible components, such as Figure 7 .

[0081] Among them, the flexible parts include the frame, bearing seat, main shaft, flexible pin-sleeve, planetary frame, sun gear shaft, high-speed shaft, gear box body, generator stator, and generator rotor. The flexible parts replace the rigid parts to establish the flexible transmission system dynamics sub-model, such as Figure 8 .

[0082] The refined rigid-flexible coupled fully integrated transmission dynamics model replaces the simple transmission model to form a refined dynamics model of the whole machine. The modeling efficiency of the whole machine dynamics model can be significantly improved by replacing the simple model with the refined model. Figure 5 .

[0083] In some embodiments, the design parameters of the rigid-flexible coupling machine refined dynamics model are optimized using simulation operation parameters to obtain optimized design parameters, including:

[0084] Obtain the design parameters that need to be optimized from the dynamic model simulation results, including the main shaft stiffness of the transmission chain, the main bearing span, the gearbox tooth root height, the tooth top height, and the displacement coefficient;

[0085] The design parameters that need to be optimized are optimized according to the optimization algorithm to obtain the optimization results of the design parameters.

[0086] Specifically, based on the refined dynamic model of the whole machine, a transmission chain sweep frequency analysis is performed on the wind turbine within the cut-in to cut-out wind speed range, where the sampling frequency of the simulation analysis is 1000 Hz, and the analysis time domain results are transformed into a three-dimensional Campbell diagram through Fourier transformation, as shown in Fig. 9 and Fig.10 The Campbell diagram can be used to clearly determine whether the acceleration threshold of the transmission chain measurement point is within the safety threshold of 7.5 mm2 / s, and the specific components that cause resonance can be determined through the whole machine modal vibration analysis.

[0087] The specific steps of modal vibration type analysis are as follows: the peak frequency of the acceleration peak exceeding 7.5m2 / s in the three-dimensional Campbell diagram is used as the reference frequency of the modal vibration type analysis; if the component with the largest proportion of modal energy at this peak frequency is at the same speed level as the corresponding excitation source, then the component is judged to be the specific component causing resonance.

[0088] According to the definition of each working condition in IEC61400-1, the aerodynamic load and control logic of the working conditions such as DLC5.1 emergency shutdown, DLC6.1 power failure, and DLC2.2.5 short circuit are established to analyze the impact of the above extreme working conditions on the key load-bearing components of the transmission system such as bearings and the first-stage planetary carrier, and the load distribution of the key load-bearing components under each extreme working condition is extracted to determine whether it meets the extreme design requirements. Establish measurement points at the positions of each key load-bearing component, extract the deformation and extreme load of each measurement point, analyze the deformation of the transmission system and the transmission results of the extreme load, and evaluate whether the load transfer path meets the design requirements, such as Fig.11 and Fig.12 shown.

[0089] The analysis results show that the deformation of the transmission chain and the bearing load are the largest under the propeller stuck condition. In order to achieve the cost-saving design of the transmission chain under the whole machine dynamics model, multidisciplinary optimization design is required to reduce the bearing load.

[0090] Through the joint simulation of Isight and Simpack software, a multidisciplinary optimization process and Python algorithm for the transmission chain are developed. The transmission chain main shaft stiffness, main bearing span, gearbox tooth root height, tooth top height, and displacement coefficient are used as optimization variables and parameterized. The bearing load size is used as the objective function. Finally, the transmission chain cost reduction design is achieved by finding the optimal combination of key variables of the transmission chain. The specific process is as follows: Fig.15 , Fig.16 and Fig.17 .

[0091] Minimize,f m (x),m=1,2...MSubjectto,g j (x)<=0,j=1,2.....J

[0092]

[0093] Among them, x i is the i-th design variable, n is the total number of design variables, and is the upper and lower limits of the value of the i-th design variable, f m (x) is the total number of the mth sub-objective function, g j (x) is the jth inequality constraint, J is the total number of inequality constraints, h k (x) is the kth equality constraint, and K is the total number of equality constraints.

[0094] Isight multidisciplinary optimization process steps are:

[0095] First, define the gearbox gear parameters through standardized text, and complete the data exchange function between Simpack and Isight through the Data Exchanger module of Isight; call the Create_sjs_Batch.bat command through the OS Command3 module of Isight to generate the Simpack calculation batch sjs file; call the UpdateSubVar.bat batch command through the OS Command2 module to complete the iterative update of the Simpack model; call the Solver.bat batch command through the OS Command module of Isight to iteratively solve the Simpack dynamic model; call the Post.bat batch command through the OS Command1 module of Isight to iteratively process the Simpack binary result data into text data; and complete the exchange of the result text data and Isight data completed in the previous step through the Data Exchanger module of Isight. The programs called by the above four *.bat batch files are *.EXE application files developed and encapsulated in Python, and the purpose is to achieve full automation of model update, solution, and post-processing.

[0096] This patent takes into account the coupled excitation effects of aerodynamics and structural dynamics of wind turbines, establishes a refined dynamic model of a large offshore wind turbine with a fully integrated transmission system in the Simpack software, and jointly develops an optimization process and Python algorithm with fully automated functions for dynamic model updating, solving, and post-processing in combination with the Isight software.

[0097] This patent can predict the resonance risk points and resonance excitation sources of the wind turbine transmission system within the range of cut-in wind speed to cut-out wind speed, analyze the impact of IEC typical working conditions on the dynamic performance of key load-bearing components of the transmission system such as the main shaft, bearings, first-level planetary carriers, gears, etc., evaluate the design safety and reliability of the wind turbine transmission system, and automatically find the optimal combination of key design parameters of the transmission system to achieve the purpose of reasonable optimization of the bearing load of the transmission system under extreme working conditions. The technical route of this invention patent is clear and can be used for all onshore and offshore three-blade horizontal axis wind turbines. It can realize the automatic optimization design of key design parameters of the wind turbine transmission system and significantly improve the design efficiency of wind turbines.

[0098] In some other embodiments, a device for optimizing transmission system design parameters based on wind turbine whole machine dynamics simulation is provided, characterized in that it includes:

[0099] A construction module, used to construct a whole machine dynamics model and a rigid body transmission system dynamics model respectively;

[0100] The assembly module assembles the whole machine dynamics model and the rigid body transmission system dynamics model to obtain a rigid-flexible coupling whole machine refined dynamics model;

[0101] The simulation module is used to collect the operating parameters of the rigid-flexible coupling whole machine refined dynamics model during simulation to obtain the simulation operating parameters;

[0102] The optimization processing module is used to optimize the design parameters of the refined dynamics model of the rigid-flexible coupling whole machine by using simulation operation parameters to obtain optimized design parameters.

[0103] In other embodiments, a transmission system design parameter optimization device based on wind turbine whole machine dynamics simulation is provided, comprising a processor and a memory storing program instructions, wherein the processor is used to execute a transmission system design parameter optimization method based on wind turbine whole machine dynamics simulation as any one of the foregoing items when running the program instructions.

[0104] In other embodiments, an electronic device (eg, a mobile phone) is provided, comprising the aforementioned transmission system design parameter optimization device based on wind turbine whole machine dynamics simulation.

[0105] In other embodiments, a storage medium is provided, storing program instructions, which, when executed, execute a method for optimizing transmission system design parameters based on wind turbine whole machine dynamics simulation as described in any of the above items.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A method for optimizing transmission system design parameters based on wind turbine whole machine dynamics simulation, characterized in that: include: Construct the whole machine dynamics model and rigid body transmission system dynamics model respectively; Assembling the whole machine dynamics model and the rigid body transmission system dynamics model to obtain a rigid-flexible coupling whole machine refined dynamics model; Collecting the operating parameters of the rigid-flexible coupling whole machine refined dynamics model during simulation to obtain simulation operating parameters; The simulation operation parameters are used to optimize the design parameters of the refined dynamics model of the rigid-flexible coupling whole machine to obtain the optimized design parameters.

2. The method for optimizing the design parameters of a transmission system based on the dynamics simulation of a wind turbine according to claim 1, characterized in that: The construction of the whole machine dynamics model comprises: Extracting data from the first model of the wind turbine generator set to obtain blade data and tower data in the first model; The blade data is used to construct a model to obtain a flexible blade sub-model of the beam unit, and the tower data is used to construct a model to obtain a tower data sub-model of the beam unit; Extract attribute data of the yaw system, gearbox, nacelle cover, and hub components in the wind turbine solid 3D model to obtain the mass, inertia, and center of gravity information of the wind turbine components; Modeling the mass, inertia, and center of gravity information of the fan components to obtain sub-models corresponding to m fan components; The flexible blade sub-model, the flexible tower sub-model and the sub-models corresponding to the m wind turbine components are assembled to obtain a whole machine dynamics model.

3. The method for optimizing the design parameters of a transmission system based on the dynamics simulation of a wind turbine according to claim 2, characterized in that: The construction of the rigid body transmission system dynamics model comprises: Draw the mechanical topology diagram based on the three-dimensional model of the transmission system; The mechanical topological structure diagram is used to construct a model to obtain a rigid body transmission system dynamics model.

4. The method for optimizing the transmission system design parameters based on the wind turbine whole machine dynamics simulation according to claim 3 is characterized in that: The whole machine dynamics model and the rigid body transmission system dynamics model are assembled to obtain a rigid-flexible coupling whole machine refined dynamics model, including: Performing flexible processing on key components in the rigid body transmission system dynamics model to obtain a flexible transmission system mechanical model; The flexible transmission system mechanical model and the whole machine dynamics model are assembled to obtain a rigid-flexible coupling whole machine refined dynamics model.

5. The method for optimizing the design parameters of a transmission system based on the dynamics simulation of a wind turbine according to claim 4, characterized in that: The simulation operation parameters are used to optimize the design parameters of the rigid-flexible coupling whole machine refined dynamics model to obtain the optimized design parameters, including: Obtaining design parameters that need to be optimized in the dynamic model simulation results, wherein the design parameters include the main shaft stiffness of the transmission chain, the main bearing span, the gear box tooth root height, the tooth addendum height, and the displacement coefficient; The design parameters that need to be optimized are optimized according to the optimization algorithm to obtain optimization results of the design parameters.

6. A device for optimizing transmission system design parameters based on wind turbine whole machine dynamics simulation, characterized in that: include: A construction module, used to construct a whole machine dynamics model and a rigid body transmission system dynamics model respectively; An assembly module assembles the whole machine dynamics model and the rigid body transmission system dynamics model to obtain a rigid-flexible coupling whole machine refined dynamics model; A simulation module, used to collect the operating parameters of the rigid-flexible coupling whole machine refined dynamics model during simulation to obtain simulation operating parameters; The optimization processing module is used to optimize the design parameters of the refined dynamics model of the rigid-flexible coupling whole machine by using the simulation operation parameters to obtain the optimized design parameters.

7. A device for optimizing transmission system design parameters based on wind turbine whole machine dynamics simulation, comprising a processor and a memory storing program instructions, characterized in that: The processor is used to execute a method for optimizing transmission system design parameters based on wind turbine whole machine dynamics simulation as described in any one of claims 1 to 5 when running the program instructions.

8. An electronic device, characterized in that: It includes a transmission system design parameter optimization device based on wind turbine whole machine dynamics simulation as described in claim 6 or 7.

9. A storage medium storing program instructions, characterized in that: When the program instructions are run, they execute a method for optimizing transmission system design parameters based on wind turbine whole machine dynamics simulation as described in any one of claims 1 to 5.

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