Floating platform for offshore wind power generation and design method thereof

Abstract

The invention discloses a floating platform for offshore wind power generation and a design method thereof, and the method comprises the steps: 1) carrying out theoretical numerical simulation analysis, and building a floating platform model; (2) a platform structure and a supporting assembly are manufactured through the three-dimensional printing technology; 3) building a test device in the experiment pool; (4) after all the assemblies are built, equipment safety check is conducted; 5) setting initial environment parameters, and determining sampling frequency and sampling time; 6) starting an experiment, and adjusting a control system to obtain a set sea condition; 7) carrying out platform performance measurement, and adjusting parameters to obtain an optimal state; 8) acquiring response data of the platform in different environments; according to the method, starting from platform structure design, optimization steps are simple, operation is easy, the method is suitable for floating platform design and optimization under different sea conditions, and reliable verification is provided for offshore wind power generation.

Description

Technical Field

[0001] The present invention relates to the field of offshore wind power generation and floating platform design, and in particular to a floating platform for offshore wind power generation and a design method thereof. Background Art

[0002] With the growth of global energy demand, the development and utilization of offshore wind energy has become an important trend. Traditional fixed offshore wind power platforms are limited in deep water areas, while floating platforms can generate wind power in deeper waters and have broad application prospects. However, the stability and wind resistance of floating platforms under different sea conditions are key issues in the design. Therefore, it is particularly important to propose an optimized floating platform design method.

[0003] As a clean and renewable energy source, offshore wind power generation has received increasing attention in recent years. Compared with onshore wind power generation, offshore wind resources are more abundant and stable, which can effectively improve the efficiency of wind power generation. However, offshore wind power generation faces more severe challenges, especially in deep sea areas. Traditional fixed wind power generation platforms are difficult to achieve large-scale application in deep sea areas due to the limitations of their infrastructure.

[0004] The emergence of floating wind power generation platforms provides a new solution for offshore wind power generation. Floating platforms can adapt to sea areas of different depths and have strong flexibility and adaptability. The platform floats on the water through buoyancy devices, and then is fixed to the seabed through anchor chains and other fixing devices. This structural design enables floating platforms to generate wind power in deeper waters, greatly expanding the application scope of offshore wind power generation.

[0005] However, floating wind power platforms also face many technical challenges in practical applications. First, the marine environment is complex and changeable, and factors such as wind, waves, and tides place high demands on the stability of floating platforms. Secondly, the wind resistance and durability of floating platforms are key issues in the design, which need to be optimized through precise numerical simulation and experimental testing. Finally, the manufacturing and installation costs of floating platforms are high, and it is necessary to reduce costs and improve economic benefits through optimized design and the application of new technologies.

[0006] Currently, many research institutions and enterprises are actively exploring the design and optimization methods of floating wind power platforms. Through the combination of numerical simulation, experimental testing and field application, the performance and reliability of floating platforms are gradually improved. However, due to the complexity and variability of the marine environment, the design and optimization of floating platforms still face many technical difficulties, and new technologies and methods are urgently needed to solve these problems. Summary of the invention

[0007] The purpose of the present invention is to overcome the defects of the prior art and provide a floating platform for offshore wind power generation and a design method thereof. By combining theoretical numerical simulation with experimental testing, a floating platform model is established, the platform structure design is optimized, the stability and wind resistance of the platform are improved, and the design and optimization of floating platforms suitable for different sea conditions are provided to provide reliable technical support and verification for offshore wind power generation.

[0008] The object of the present invention is achieved in one aspect as follows: A design method for a floating platform for offshore wind power generation comprises the following steps: 1) Theoretical numerical simulation analysis and establishment of floating platform model; 2) Use 3D printing technology to manufacture the floating platform structure and support components, and use high-precision 3D printing technology to manufacture the platform model based on the numerical simulation results; 3) Build a test device in the experimental pool to simulate the real sea conditions; 4) After all components are built, perform a safety check on the equipment to ensure that the fastening bolts are not loose, the circuit connections are correct and operating normally, and the platform is stable; 5) Set the initial environmental parameters and determine the sampling frequency and sampling time; 6) Start the experiment, adjust the control system to obtain the set sea conditions, and simulate different marine environmental conditions; 7) Platform performance measurement: perform platform performance measurement, adjust parameters to obtain the best state, and collect data such as stability and wind resistance of the platform under different states; 8) Response data collection: Collect the response data of the platform under different environments and record the performance indicators of the platform under various sea conditions; 9) Orthogonal experimental design: Use the orthogonal experimental design method to conduct multiple experiments to optimize the platform design; 10) Collect and process all data; analyze and process the experimental data to obtain the performance indicators of the platform under different environmental conditions, and optimize the platform design based on the data results.

[0009] As a further limitation of the present invention, step 1) includes: using the basic theories of fluid mechanics and structural mechanics to perform numerical simulation analysis on the platform, performing stress analysis on the platform structure by using the finite element method FEM, and using the computational fluid dynamics CFD method to analyze the dynamic response of the platform under different wind speeds, waves and tidal conditions, and the basic equations include: , in, is the velocity field, is the pressure field, is the fluid density, is the kinematic viscosity, For external force.

[0010] As a further limitation of the present invention, the step 3) specifically includes building a floating platform model, installing a sensor system and a data acquisition device; the building of the floating platform model includes: a) Installation of the base: transport the base to the experimental site, install the buoy, and ensure that the connection between the buoy and the base is firm; b) Support structure installation: fix the vertical pillars at the four corners of the base and connect them by welding; install the transverse beams to form a stable frame; c) Solar panel installation: install the solar panel on the top of the supporting structure and adjust the tilt angle of the solar panel; d) Wind turbine installation: Install the wind turbine on the top of the tower, connect it to the tower through the flange, install the wind rotor, and ensure the normal operation of the wind turbine; e) Tidal current generator installation: Install the tidal current generator at the bottom of the base and fix it with brackets and buoys to ensure that the propeller can rotate freely.

[0011] As a further limitation of the present invention, step 4) specifically includes: after completing the assembly, performing overall debugging and testing of the platform to ensure that each component works properly, the debugging includes adjusting the angle of the solar panel, the wind direction of the wind turbine, and the tidal direction of the tidal generator.

[0012] Another aspect of the purpose of the present invention is achieved as follows: a floating platform for offshore wind power generation, comprising a base, a supporting structure, a solar panel, a wind turbine, a tidal generator and a tower; the supporting structure is installed on the base; the solar panel is fixed to the top of the supporting structure by a mounting bracket; the solar panel and the supporting structure are connected by a rotating shaft and can be automatically adjusted according to the angle of sunlight; the wind turbine is fixedly installed on the top of the tower; the tidal generator is installed at the bottom of the base.

[0013] As a further limitation of the present invention, the base includes a buoy and a connecting piece, and the buoy is installed at four corners of the base and fixed by the connecting piece.

[0014] As a further limitation of the present invention, the support structure includes vertical pillars and transverse beams; the vertical pillars are fixedly installed at the four corners of the base; and the transverse beams are installed in the middle of the vertical pillars to form a stable frame.

[0015] As a further limitation of the present invention, the wind turbine generator comprises a flange, a wind wheel and a generator one; the wind wheel is mounted on the main shaft of the generator one through a bearing; and the wind turbine generator is fixedly mounted on the top of the tower through a flange and bolts.

[0016] As a further limitation of the present invention, the tidal generator includes a bracket, a propeller and a second generator, wherein the propeller is installed on the main shaft of the second generator and can generate electricity using ocean tides; the tidal generator is fixedly installed on the lower part of the base through a bracket and a buoy; and the bracket is made of stainless steel.

[0017] The present invention adopts the above technical scheme, and compared with the prior art, the beneficial effects are as follows: the present invention establishes a floating platform model and optimizes the platform structure design by combining theoretical numerical simulation with experimental testing. The experimental platform is modularly designed and can simulate the working state in the actual marine environment in the experimental environment to conduct dynamic performance testing; the stability and wind resistance of the platform are improved, and it is suitable for the design and optimization of floating platforms under different sea conditions, providing reliable technical support and verification for offshore wind power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0019] Figure 2 It is a side view structural schematic diagram of the present invention.

[0020] Figure 3 It is a top view of the solar panel in the present invention.

[0021] Figure 4 It is a schematic diagram of the solar panel structure in the present invention.

[0022] Figure 5 It is a schematic diagram of the structure of the tidal energy turbine in the present invention.

[0023] Figure 6 It is a schematic diagram of the tower structure in the present invention.

[0024] Figure 7 It is a schematic diagram of the structure of the wind turbine generator in the present invention.

[0025] Among them, 1 is a base, 1-1 is a buoy, 1-2 is a connecting piece; 2 is a supporting structure, 2-1 is a vertical pillar, 2-2 is a transverse beam; 3 is a solar panel, 3-1 is a rotating shaft; 4 is a wind turbine, 4-1 is a flange, 4-2 is a wind wheel, 4-3 is a generator one, 5 is a tidal generator, 5-1 is a bracket, 5-2 is a propeller, 5-3 is a generator two, and 6 is a tower. DETAILED DESCRIPTION

[0026] A method for designing a floating platform for offshore wind power generation, characterized by comprising the following steps: 1) Theoretical numerical simulation analysis, establish a floating platform model; use the basic theories of fluid mechanics and structural mechanics to perform numerical simulation analysis on the platform, use the finite element method (FEM) to perform stress analysis on the platform structure, and use the computational fluid dynamics (CFD) method to analyze the dynamic response of the platform under different wind speeds, waves and tidal conditions. The basic equations include: , in, is the velocity field, is the pressure field, is the fluid density, is the kinematic viscosity, For external force.

[0027] 2) The floating platform structure and supporting components are manufactured through 3D printing technology. The platform model is manufactured based on the numerical simulation results using high-precision 3D printing technology to ensure the accuracy and functionality of the platform structure.

[0028] 3) Build a test device in the experimental pool to simulate the real sea conditions; specifically, build a floating platform model, install the sensor system and data acquisition device; the sensor system is used to monitor the dynamic response and various performance indicators of the platform in real time; the construction of the floating platform model includes: a) Installation of the base: transport the base to the experimental site, install the buoy, and ensure that the connection between the buoy and the base is firm; b) Support structure installation: fix the vertical pillars at the four corners of the base and connect them by welding; install the transverse beams to form a stable frame; c) Solar panel installation: install the solar panel on the top of the supporting structure and adjust the tilt angle of the solar panel; d) Wind turbine installation: Install the wind turbine on the top of the tower, connect it to the tower through the flange, install the wind rotor, and ensure the normal operation of the wind turbine; e) Tidal current generator installation: Install the tidal current generator at the bottom of the base and fix it with brackets and buoys to ensure that the propeller can rotate freely.

[0029] 4) After all components are assembled, conduct a safety check on the equipment to ensure that the fastening bolts are not loose, the circuit connections are correct and operate normally, and the platform is stable. After assembly, conduct overall debugging and testing of the platform to ensure that all components operate normally. Debugging includes adjusting the angle of the solar panels, the wind direction of the wind turbines, and the tidal direction of the tidal generators.

[0030] 5) Set the initial environmental parameters and determine the sampling frequency and sampling time. The initial environmental parameters include wave height, wind speed, wind direction, etc.

[0031] 6) Start the experiment, adjust the control system to obtain the set sea conditions, and simulate different marine environmental conditions; by adjusting the control system, different wind speeds, waves and tidal conditions can be simulated to test the performance of the platform under various environmental conditions.

[0032] 7) Platform performance measurement: Measure platform performance, adjust parameters to obtain the best state, and collect data such as the stability and wind resistance of the platform under different states; measure the dynamic response of the platform under different environmental conditions, including the platform's tilt angle, acceleration, vibration frequency, etc.

[0033] 8) Response data collection: Collect the response data of the platform under different environments and record the performance indicators of the platform under various sea conditions; through the data acquisition device, record the dynamic response data of the platform in real time to ensure the accuracy and completeness of the data.

[0034] 9) Orthogonal Experimental Design: Use the orthogonal experimental design method to conduct multiple experiments to optimize the platform design; by setting multiple experimental variables (such as wind speed, wave height, tidal speed, etc.), conduct multiple experiments, analyze the impact of each variable on the platform performance, and optimize the platform design parameters.

[0035] 10) Collect and process all data; analyze and process the experimental data to obtain the performance indicators of the platform under different environmental conditions, and optimize the platform design based on the data results.

[0036] like Figure 1-3 As shown, a floating platform for offshore wind power generation includes a base 1, a supporting structure 2, a solar panel 3, a wind turbine 4, a tidal generator 5 and a tower 6; the supporting structure 2 is installed on the base 1; the solar panel 3 is fixed to the top of the supporting structure 2 through a mounting bracket; the solar panel 3 and the supporting structure 2 are connected through a rotating shaft 3-1, which can be automatically adjusted according to the angle of sunlight; the inclination angle of the solar panel 3 can be adjusted to maximize the use of solar energy; the wind turbine 4 is fixedly installed on the top of the tower 6; the tidal generator 5 is installed at the lower part of the base 1; the base 1, as the foundation of the entire platform, is made of high-strength corrosion-resistant material and can be used for a long time in an offshore environment.

[0037] like Figure 4 As shown, the support structure 2 includes vertical pillars 2-1 and transverse beams 2-2; the vertical pillars 2-1 are fixedly installed at the four corners of the base 1; and the transverse beams 2-2 are installed in the middle of the vertical pillars 2-1 to form a stable frame. Figure 6As shown, the base 1 includes a buoy 1-1 and a connector 1-2. The buoy 1-1 is installed at the four corners of the base 1 and fixed by the connector 1-2 to provide buoyancy and stability for the platform.

[0038] like Figure 7 As shown, the wind turbine 4 includes a flange 4-1, a wind wheel 4-2 and a generator 4-3; the wind wheel 4-2 is installed on the main shaft of the generator 4-3 through a bearing and can rotate with the wind; the wind turbine 4 is fixedly installed on the top of the tower 6 through the flange 4-1 and bolts.

[0039] like Figure 5 As shown, the tidal generator 5 includes a bracket 5-1, a propeller 5-2 and a generator 5-3. The propeller 5-2 is installed on the main shaft of the generator 5-3 and can generate electricity using the ocean tide. The tidal generator 5 is fixedly installed on the lower part of the base 1 through the bracket 5-1 and the buoy 1-1. The bracket 5-1 is made of stainless steel and has good corrosion resistance.

[0040] When the present invention is working, the optimal working state of each power generation component is ensured by adjusting the inclination angle of the solar panel 3, the wind direction angle of the wind generator 4 and the installation position of the tidal generator 5. The solar panel 3 receives sunlight and converts light energy into electrical energy. The solar panel 3 is installed on the top of the supporting structure 2 and fixed by the mounting bracket 3-1; the inclination angle of the solar panel 3 can be automatically adjusted according to the angle of sunlight exposure to maximize the use of solar energy; the solar panel 3 converts solar energy into electrical energy and transmits it to the energy storage system through cables; the wind generator 4 rotates under the action of wind power and converts wind energy into electrical energy; the wind generator 4 is installed on the top of the tower 6, and the generator 1 4-3 converts wind energy into electrical energy. The tidal generator 5 uses the kinetic energy of the ocean tide to generate electricity; the tidal generator 5 is installed at the lower part of the base 1 and fixed by the bracket 5-1 and the buoy 1-1; the propeller 5-2 uses the flow of the ocean tide to generate rotational kinetic energy, and the generator 2 5-3 converts this part of kinetic energy into electrical energy and transmits it to the energy storage system.

[0041] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present invention, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present invention.

Claims

1. A design method for a floating platform for offshore wind power generation, characterized in that: The following steps are involved: 1) Theoretical numerical simulation analysis and establishment of floating platform model; 2) Use 3D printing technology to manufacture the floating platform structure and support components, and use high-precision 3D printing technology to manufacture the platform model based on the numerical simulation results; 3) Build a test device in the experimental pool to simulate the real sea conditions; 4) After all components are built, perform a safety check on the equipment to ensure that the fastening bolts are not loose, the circuit connections are correct and operating normally, and the platform is stable; 5) Set the initial environmental parameters and determine the sampling frequency and sampling time; 6) Start the experiment, adjust the control system to obtain the set sea conditions, and simulate different marine environmental conditions; 7) Platform performance measurement: perform platform performance measurement, adjust parameters to obtain the best state, and collect data such as stability and wind resistance of the platform under different states; 8) Response data collection: Collect the response data of the platform under different environments and record the performance indicators of the platform under various sea conditions; 9) Orthogonal experimental design: Use the orthogonal experimental design method to conduct multiple experiments to optimize the platform design; 10) Collect and process all data; The experimental data are analyzed and processed to obtain the performance indicators of the platform under different environmental conditions, and the platform design is optimized based on the data results.

2. A design method for a floating platform for offshore wind power generation according to claim 1, characterized in that: The step 1) includes: using the basic theories of fluid mechanics and structural mechanics to perform numerical simulation analysis on the platform, using the finite element method FEM to perform stress analysis on the platform structure, and using the computational fluid dynamics CFD method to analyze the dynamic response of the platform under different wind speeds, waves and tidal conditions. The basic equations include: ， in, is the velocity field, is the pressure field, is the fluid density, is the kinematic viscosity, For external force.

3. A design method for a floating platform for offshore wind power generation according to claim 1, characterized in that: The step 3) specifically includes building a floating platform model, installing a sensor system and a data acquisition device; the building of the floating platform model includes: a) Installation of the base: transport the base to the experimental site, install the buoy, and ensure that the connection between the buoy and the base is firm; b) Support structure installation: fix the vertical pillars at the four corners of the base and connect them by welding; install the transverse beams to form a stable frame; c) Solar panel installation: install the solar panel on the top of the supporting structure and adjust the tilt angle of the solar panel; d) Wind turbine installation: Install the wind turbine on the top of the tower, connect it to the tower through the flange, install the wind rotor, and ensure the normal operation of the wind turbine; e) Tidal current generator installation: Install the tidal current generator at the bottom of the base and fix it with brackets and buoys to ensure that the propeller can rotate freely.

4. A design method for a floating platform for offshore wind power generation according to claim 1, characterized in that: The step 4) specifically includes: after the assembly is completed, the overall debugging and testing of the platform is carried out to ensure that each component works normally, and the debugging includes the angle adjustment of the solar panel, the wind direction adjustment of the wind turbine and the tidal direction adjustment of the tidal generator.

5. A floating platform for offshore wind power generation, characterized in that: The invention comprises a base (1), a supporting structure (2), a solar panel (3), a wind turbine (4), a tidal current generator (5) and a tower (6); the supporting structure (2) is mounted on the base (1); the solar panel (3) is fixed to the top of the supporting structure (2) via a mounting bracket; the solar panel (3) and the supporting structure (2) are connected via a rotating shaft (3-1) and can be automatically adjusted according to the angle of sunlight; the wind turbine (4) is fixedly mounted on the top of the tower (6); and the tidal current generator (5) is mounted at the bottom of the base (1).

6. A floating platform for offshore wind power generation according to claim 5, characterized in that: The base (1) comprises a buoy (1-1) and a connecting piece (1-2); the buoy (1-1) is installed at four corners of the base (1) and fixed by the connecting piece (1-2).

7. A floating platform for offshore wind power generation according to claim 5, characterized in that: The support structure (2) comprises a vertical support (2-1) and a transverse beam (2-2); the vertical support (2-1) is fixedly mounted at the four corners of the base (1); and the transverse beam (2-2) is mounted in the middle of the vertical support (2-1) to form a stable frame.

8. The floating platform for offshore wind power generation according to claim 5, characterized in that: The wind turbine generator (4) comprises a flange (4-1), a wind wheel (4-2) and a generator one (4-3); the wind wheel (4-2) is mounted on the main shaft of the generator one (4-3) via a bearing; and the wind turbine generator (4) is fixedly mounted on the top of a tower (6) via the flange (4-1) and bolts.

9. A floating platform for offshore wind power generation according to claim 5, characterized in that: The tidal current generator (5) comprises a bracket (5-1), a propeller (5-2) and a second generator (5-3); the propeller (5-2) is mounted on the main shaft of the second generator (5-3) and can generate electricity using ocean tidal currents; the tidal current generator (5) is fixedly mounted on the lower part of the base (1) via the bracket (5-1) and a buoy (1-1); the bracket (5-1) is made of stainless steel.

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