A floating platform for offshore wind power generation and a method of designing the same

Abstract

The application discloses a kind of floating platform for offshore wind power generation and its design method, comprising: 1) theoretical numerical simulation analysis, establish floating platform model;2) manufacture platform structure and supporting assembly by three-dimensional printing technology;3) build test device in experimental pool;4) after each component is built, carry out equipment safety inspection;5) set initial environmental parameter, determine sampling frequency and sampling time;6) start experiment, adjust control system to obtain set sea state;7) carry out platform performance measurement, adjust parameter to obtain optimal state;8) collect the response data of platform under different environments;9) using orthogonal experimental design method, carry out multiple experiments to optimize platform design;10) collect and process all data.The application starts from platform structure design, and the optimization step is simple and easy to operate, suitable for floating platform design and optimization under different sea conditions, and provides reliable verification for offshore wind power generation.

Description

TECHNICAL FIELD

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

[0002] With the growth of global energy demand, developing and utilizing 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 sea areas, with broad application prospects. However, the stability and wind resistance of floating platforms in different sea conditions are key issues in design, therefore, it is particularly important to propose an optimized floating platform design method.

[0003] Offshore wind power generation as a clean and renewable energy form has received more and more 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, the challenges faced by offshore wind power generation are more severe, especially in deep sea areas, traditional fixed wind power platforms are difficult to achieve large-scale application in deep sea areas due to the limitations of their foundation structure.

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

[0005] However, floating wind power platforms also face many technical challenges in practical application. First, the marine environment is complex and variable, factors such as wind and waves, tides, etc. pose high requirements on the stability of floating platforms. Second, the wind resistance and durability of floating platforms are key issues in design, which need to be optimized through precise numerical simulation and experimental testing. Finally, the manufacturing and installation cost of floating platforms is high, which needs to be reduced through optimized design and application of new technologies to improve economic benefits.

[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 marine environment, the design and optimization of floating platforms still face many technical difficulties, and new technologies and methods are needed to solve these problems. SUMMARY

[0007] The purpose of the present application is to overcome the defects of the prior art, provide a floating platform for offshore wind power generation and a design method thereof, establish a floating platform model by combining theoretical numerical simulation and experimental test, optimize the platform structure design, improve the stability and wind resistance of the platform, and be suitable for the design and optimization of floating platforms in different sea conditions, thereby providing reliable technical support and verification for offshore wind power generation.

[0008] The purpose of the present application is achieved in one aspect by a design method of a floating platform for offshore wind power generation, comprising the following steps:

[0009] 1) numerical simulation analysis, establishing a floating platform model;

[0010] 2) manufacturing the floating platform structure and support assembly by three-dimensional printing technology, using high-precision 3D printing technology to manufacture the platform model according to the numerical simulation results;

[0011] 3) building a test device in an experimental pool to simulate real sea conditions;

[0012] 4) after the assembly of each component is completed, the safety of the equipment is checked to ensure that the fastening bolts are not loose, the circuit connection is correct and normally operating, and the platform is stable;

[0013] 5) setting initial environmental parameters, determining the sampling frequency and sampling time;

[0014] 6) starting the experiment, adjusting the control system to obtain the set sea conditions, and simulating different marine environmental conditions;

[0015] 7) platform performance measurement: measuring the platform performance, adjusting the parameters to obtain the best state, and sequentially collecting the stability, wind resistance and other data of the platform under different states;

[0016] 8) response data collection: collecting the response data of the platform under different environments, and recording the performance indicators of the platform under various sea conditions;

[0017] 9) orthogonal experimental design: using the orthogonal experimental design method to perform multiple experiments to optimize the platform design;

[0018] 10) collecting and processing all data; analyzing and processing the experimental data to obtain the performance indicators of the platform under different environmental conditions, and optimizing the platform design according to the data results.

[0019] As a further limitation of the present application, step 1) includes: using the basic theory of fluid mechanics and structural mechanics to perform numerical simulation analysis on the platform, performing stress analysis on the platform structure by finite element method FEM, and analyzing the dynamic response of the platform under different wind speed, wave and tidal conditions by computational fluid dynamics CFD method, the basic equations include:

[0020] ,

[0021] in, For the velocity field, For pressure field, For fluid density, Kinematic viscosity, It is an external force.

[0022] As a further limitation of the present invention, step 3) specifically includes the construction of a floating platform model, and the installation of a sensor system and a data acquisition device; the construction of the floating platform model includes:

[0023] a) Base installation: Transport the base to the experimental site, install the float, and ensure that the connection between the float and the base is firm;

[0024] b) Support structure installation: Fix the vertical columns to the four corners of the base and connect them by welding; install the horizontal beams to form a stable frame;

[0025] c) Solar panel installation: Install the solar panels on top of the supporting structure and adjust the tilt angle of the solar panels;

[0026] d) Wind turbine installation: Install the wind turbine on top of the tower, connect it to the tower via a flange, install the wind turbine, and ensure the wind turbine operates normally;

[0027] e) Installation of the tidal current generator: Install the tidal current generator at the bottom of the base and fix it with brackets and floats to ensure that the propeller can rotate freely.

[0028] As a further limitation of the present invention, step 4) specifically includes: after the assembly is completed, the platform is debugged and tested to ensure that each component works normally. The debugging includes adjusting the angle of the solar panel, adjusting the wind direction of the wind turbine, and adjusting the tidal direction of the tidal generator.

[0029] Another aspect of the present invention is achieved as follows: a floating platform for offshore wind power generation includes a base, a support structure, solar panels, a wind turbine, a tidal current generator, and a tower; the support structure is mounted on the base; the solar panels are fixed to the top of the support structure via mounting brackets; the solar panels are connected to the support structure via a rotating shaft and can be automatically adjusted according to the angle of sunlight; the wind turbine is fixedly mounted on the top of the tower; and the tidal current generator is mounted on the lower part of the base.

[0030] As a further limitation of the present invention, the base includes floats and connectors, the floats being installed at the four corners of the base and fixed by the connectors.

[0031] As a further limitation of the application, the support structure comprises vertical supports and transverse beams; the vertical supports are fixedly installed at the four corners of the base; the transverse beams are installed at the middle part of the vertical supports, forming a stable frame.

[0032] As a further limitation of the application, the wind turbine comprises a flange, a wind wheel and a generator one; the wind wheel is installed on the main shaft of the generator one through a bearing; the wind turbine is fixedly installed on the top of the tower through the flange and bolts.

[0033] As a further limitation of the application, the tidal power generator comprises a support, a propeller and a generator two; the propeller is installed on the main shaft of the generator two and can generate power by using ocean currents; the tidal power generator is fixedly installed on the lower part of the base through the support and the buoy; the support is made of stainless steel material.

[0034] The above technical scheme is adopted in the application, compared with the prior art, and has the beneficial effects that: the application establishes a floating platform model by combining theoretical numerical simulation and experimental testing, optimizes the platform structure design, the experimental platform can simulate the working state under the actual marine environment in the experimental environment through modular design, and dynamic performance testing is carried out; the stability and wind resistance of the platform are improved, the floating platform design and optimization under different sea conditions are suitable, and reliable technical support and verification are provided for offshore wind power generation. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a front view structural schematic diagram of the application.

[0036] Figure 2 It is a side view structural schematic diagram of the application.

[0037] Figure 3 It is a top view of the solar panel in the application.

[0038] Figure 4 It is a structural schematic diagram of the solar panel in the application.

[0039] Figure 5 It is a structural schematic diagram of the tidal power turbine in the application.

[0040] Figure 6 It is a structural schematic diagram of the tower cylinder in the application.

[0041] Figure 7 It is a structural schematic diagram of the wind turbine in the application.

[0042] Wherein, 1 base, 1-1 pontoon, 1-2 connecting piece; 2 support structure, 2-1 vertical column, 2-2 cross beam; 3 solar panel, 3-1 rotating shaft; 4 wind turbine, 4-1 flange, 4-2 wind wheel, 4-3 generator one, 5 tidal current generator, 5-1 support, 5-2 propeller, 5-3 generator two, 6 is a tower. DETAILED DESCRIPTION

[0043] A design method for a floating platform for offshore wind power generation, characterized in that it comprises the following steps:

[0044] 1) Theoretical numerical simulation analysis, establish a floating platform model; using the basic theory of fluid mechanics and structural mechanics to carry out numerical simulation analysis on the platform, through the finite element method (Finite Element Method, FEM) to analyze the stress of the platform structure, using computational fluid dynamics (Computational Fluid Dynamics, CFD) method to analyze the dynamic response of the platform under different wind speed, wave and tidal current conditions, the basic equation includes:

[0045] ,

[0046] Wherein, is the velocity field, is the pressure field, is the fluid density, is the kinematic viscosity, is the external force.

[0047] 2) Manufacture the floating platform structure and support assembly through three-dimensional printing technology, use high-precision 3D printing technology to manufacture the platform model according to the numerical simulation results, ensure the accuracy and functionality of the platform structure.

[0048] 3) Build a test device in the experimental pool to simulate real sea conditions; including floating platform model building, sensor system and data acquisition device installation; the sensor system is used to monitor the dynamic response and performance indicators of the platform in real time; the floating platform model building includes:

[0049] a) Base installation: transport the base to the experimental site, install the pontoon, and ensure that the pontoon is firmly connected to the base;

[0050] b) Support structure installation: fix the vertical column at the four corners of the base and connect it by welding; install the cross beam to form a stable frame;

[0051] c) Solar panel installation: install the solar panel on the top of the support structure and adjust the inclination angle of the solar panel;

[0052] d) Wind turbine installation: Install the wind turbine on the top of the tower, connect it with the tower through the flange, install the wind wheel, and ensure the normal operation of the wind turbine;

[0053] e) Tidal turbine installation: Install the tidal turbine at the lower part of the base, fix it with the support and float, and ensure the free rotation of the propeller.

[0054] 4) After the assembly of each component, perform safety inspection to ensure that the fastening bolts are not loose, the circuit connection is correct and normal, and the platform is stable. After the assembly is completed, perform overall debugging and testing of the platform to ensure that each component works normally. The debugging includes angle adjustment of the solar panel, wind direction adjustment of the wind turbine, and tidal direction adjustment of the tidal turbine.

[0055] 5) Set the initial environmental parameters, determine the sampling frequency and sampling time, and the initial environmental parameters include sea wave height, wind speed, wind direction, etc.

[0056] 6) Start the experiment, adjust the control system to obtain the set sea conditions, and simulate different marine environmental conditions. Through the adjustment of the control system, different wind speed, wave and tidal conditions can be simulated to test the performance of the platform under various environmental conditions.

[0057] 7) Platform performance measurement: Perform platform performance measurement, adjust parameters to obtain the best state, and collect data such as platform stability and wind resistance under different conditions; measure the dynamic response of the platform under different environmental conditions, including the inclination angle, acceleration, vibration frequency, etc.

[0058] 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 collection device, real-time record the dynamic response data of the platform to ensure the accuracy and integrity of the data.

[0059] 9) Orthogonal test design: Use orthogonal test design method to optimize platform design through multiple experiments; by setting multiple experimental variables (such as wind speed, wave height, tidal velocity, etc.), perform multiple experiments, analyze the influence of each variable on platform performance, and optimize platform design parameters.

[0060] 10) Collect and process all data; analyze and process experimental data to obtain performance indicators of the platform under different environmental conditions, and optimize platform design according to data results.

[0061] For example Figures 1-3As shown, a floating platform for offshore wind power generation includes a base 1, a support structure 2, solar panels 3, a wind turbine 4, a tidal current generator 5, and a tower 6. The support structure 2 is mounted on the base 1. The solar panels 3 are fixed to the top of the support structure 2 via mounting brackets. The solar panels 3 and the support structure 2 are connected by a rotating shaft 3-1, which can automatically adjust according to the angle of sunlight. The tilt angle of the solar panels 3 can be adjusted to maximize the utilization of solar energy. The wind turbine 4 is fixedly mounted on the top of the tower 6. The tidal current generator 5 is mounted on 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 the marine environment.

[0062] like Figure 4 As shown, the support structure 2 includes vertical columns 2-1 and horizontal beams 2-2; the vertical columns 2-1 are fixedly installed at the four corners of the base 1; the horizontal beams 2-2 are installed in the middle of the vertical columns 2-1, forming a stable frame. Figure 6 As shown, the base 1 includes floats 1-1 and connectors 1-2. The floats 1-1 are installed at the four corners of the base 1 and fixed by the connectors 1-2, providing buoyancy and stability to the platform.

[0063] like Figure 7 As shown, the wind turbine 4 includes a flange 4-1, a wind rotor 4-2, and a generator 4-3; the wind rotor 4-2 is mounted on the main shaft of the generator 4-3 via bearings and can rotate with the wind; the wind turbine 4 is fixedly mounted on the top of the tower 6 via the flange 4-1 and bolts.

[0064] like Figure 5 As shown, the tidal current generator 5 includes a bracket 5-1, a propeller 5-2, and a generator 5-3. The propeller 5-2 is mounted on the main shaft of the generator 5-3 and can generate electricity using ocean currents. The tidal current generator 5 is fixedly mounted on the lower part of the base 1 via the bracket 5-1 and the float 1-1. The bracket 5-1 is made of stainless steel and has good corrosion resistance.

[0065] In operation, 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 turbine 4 and the installation position of the tidal current generator 5. The solar panel 3 receives sunlight and converts light energy into electric energy. The solar panel 3 is installed on the top of the support 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 irradiation, so as to maximize the utilization of solar energy. The solar panel 3 converts solar energy into electric energy, which is transmitted to the energy storage system through a cable. The wind turbine 4 rotates under the action of wind and converts wind energy into electric energy. The wind turbine 4 is installed on the top of the tower 6, and the generator 4-3 converts wind energy into electric energy. The tidal current generator 5 utilizes the kinetic energy of ocean tidal current to generate electricity. The tidal current generator 5 is installed on the lower part of the base 1 and fixed by the bracket 5-1 and the buoy 1-1. The propeller 5-2 utilizes the flow of ocean tidal current to generate rotary kinetic energy, and the generator 2 5-3 converts the kinetic energy into electric energy, which is transmitted to the energy storage system.

[0066] The present application is not limited to the above-mentioned embodiments, and on the basis of the technical solutions disclosed in the present application, those skilled in the art can make some substitutions and modifications to some technical features without creative labor, and these substitutions and modifications are all within the protection scope of the present application.

Claims

1. A method of designing a floating platform for offshore wind power generation, characterized in that, The method comprises the following steps: 1) theoretical numerical simulation analysis, establishing a floating platform model; 2) manufacturing the floating platform structure and support assembly through three-dimensional printing technology, manufacturing the floating platform model according to the numerical simulation results by using high-precision 3D printing technology; the floating platform model comprises a base (1), a support structure (2), a solar panel (3), a wind turbine (4), a tidal turbine (5) and a tower (6); the support structure (2) is installed on the base (1); the solar panel (3) is fixed on the top of the support structure (2) through a mounting bracket; the solar panel (3) is connected with the support structure (2) through a rotating shaft (3-1); the wind turbine (4) is fixedly installed on the top of the tower (6); the tidal turbine (5) is installed on the lower part of the base (1); The base (1) comprises a float (1-1) and a connecting piece (1-2), the float (1-1) is installed at the four corners of the base (1) and is fixed through the connecting piece (1-2); The support structure (2) comprises vertical struts (2-1) and transverse beams (2-2); the vertical struts (2-1) are fixedly installed at the four corners of the base (1); the transverse beams (2-2) are installed at the middle part of the vertical struts (2-1); The wind turbine (4) comprises 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; the wind turbine (4) is fixedly installed on the top of the tower (6) through the flange (4-1) and bolts; The tidal turbine (5) comprises 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); the tidal turbine (5) is fixedly installed on the lower part of the base (1) through the bracket (5-1) and the float (1-1); 3) building a test device in an experimental pool to simulate real sea state environment; 4) after each component is built, performing equipment safety inspection to ensure that the fastening bolts are not loose, the circuit connection is correct and normally operates, and the platform is stable; 5) setting initial environmental parameters, determining sampling frequency and sampling time; 6) starting the experiment, adjusting the control system to obtain the set sea state, and simulating different marine environmental conditions; 7) platform performance measurement: performing platform performance measurement, adjusting parameters to obtain the best state, and sequentially collecting the stability and wind resistance data of the platform under different states; 8) response data collection: collecting the response data of the platform under different environments and recording the performance indicators of the platform under various sea states; 9) orthogonal test design: adopting an orthogonal test design method to perform multiple experiments to optimize the platform design; 10) collecting and processing all data; Analyzing and processing the experimental data to obtain the performance indicators of the platform under different environmental conditions, and optimizing the platform design according to the data results.

2. A design method of a floating platform for offshore wind power generation according to claim 1, characterized in that, The step 1) comprises: using the basic theory of fluid mechanics and structural mechanics to perform numerical simulation analysis on the platform, performing stress analysis on the platform structure by the finite element method (FEM), and analyzing the dynamic response of the platform under different wind speeds, waves and tidal currents by the computational fluid dynamics (CFD) method, and the basic equations include: Wherein, u is the velocity field, p is the pressure field, rho is the fluid density, v is the kinematic viscosity, and f is the external force.

3. A design method of a floating platform for offshore wind power generation according to claim 1, characterized in that, The step 3) specifically comprises floating platform model building, sensor system and data acquisition device installation; the floating platform model building comprises: a) base installation: transport the base to the experimental site, install the float, and ensure that the connection between the float and the base is firm; b) support structure installation: fix the vertical support column at the four corners of the base and connect it by welding; install the horizontal beam to form a stable frame; c) solar panel installation: install the solar panel on the top of the support structure and adjust the inclination angle of the solar panel; d) wind turbine installation: install the wind turbine on the top of the tower and connect it with the tower through the flange, install the wind wheel and ensure the normal operation of the wind turbine; e) tidal current generator installation: install the tidal current generator at the lower part of the base and fix it through the support and the float, and ensure that the propeller can rotate freely.

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

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