Floating wind turbine structure stability analysis method, device, equipment and storage medium

Abstract

The application relates to a floating wind turbine structure stability analysis method, device, equipment, computer equipment, storage medium and computer program product. The method comprises the following steps: obtaining inherent structural characteristic data of a floating wind turbine model; configuring ballast of the floating wind turbine model in a static force balance state according to the inherent structural characteristic data; calculating a static water restoring moment of the floating wind turbine model under a preset inclination angle after the ballast is configured; and obtaining a stability constant of the floating wind turbine model according to the static water restoring moment, wherein the floating wind turbine model is a parameterized three-dimensional geometric model constructed according to a parent shape design of a floating wind turbine structure, and the stability constant is used for representing a stable state of the floating wind turbine model. The method can automatically complete stability analysis of a large number of floating wind turbine structure design schemes in a short time, and significantly improves the efficiency of floating wind turbine structure selection and optimization design scheme in the conceptual design stage.

Description

TECHNICAL FIELD

[0001] The present application relates to the offshore wind power technology field, in particular to a floating wind turbine structure stability analysis method, device, equipment, computer device, computer readable storage medium and computer program product. BACKGROUND

[0002] With the development of power technology, offshore wind power technology appears, and green energy utilization efficiency can be effectively improved by using offshore wind power. The floating wind turbine is one of the important equipment for realizing deep-sea wind resource development, and the stable operation of the floating wind turbine can be ensured by reasonable configuration of weight and buoyancy. When designing the floating wind turbine, the basic form and main size parameters of the structure need to be determined, and the main size optimization of the structure is an effective means to ensure that the floating wind turbine can work stably on the sea surface, and good stability is a property that must be possessed by each floating wind turbine design scheme.

[0003] In the traditional technology, the stability analysis of the floating wind turbine structure mainly depends on professional ocean engineering structure analysis software such as SESAM, AQWA, MOSES and the like. However, the automation degree of these software is not high, and the working performance is poor. SUMMARY

[0004] Therefore, it is necessary to provide a floating wind turbine structure stability analysis method, device, equipment, computer device, computer readable storage medium and computer program product capable of automatically and quickly analyzing the stability of the floating wind turbine structure design scheme in view of the above technical problems.

[0005] In a first aspect, the present application provides a floating wind turbine structure stability analysis method, which comprises:

[0006] obtaining inherent structural characteristic data of a floating wind turbine model; the floating wind turbine model is a parameterized three-dimensional geometric model constructed according to a parent form design of a floating wind turbine structure;

[0007] configuring ballast of the floating wind turbine model in a static force balance state according to the inherent structural characteristic data;

[0008] calculating a static water restoring moment of the floating wind turbine model after the ballast is configured at a preset inclination angle;

[0009] obtaining a stability constant of the floating wind turbine model according to the static water restoring moment; the stability constant is used to represent a stable state of the floating wind turbine model.

[0010] In one embodiment, the configuring ballast of the floating wind turbine model in a static force balance state according to the inherent structural characteristic data comprises:

[0011] calculating, according to the inherent structural characteristic data, the ballast parameters of the floating wind turbine model in reaching a target draft state;

[0012] ballast configuring the floating wind turbine model according to the ballast parameters.

[0013] In one embodiment, the ballast parameters include ballast sizes, and the calculating, according to the inherent structural characteristic data, the ballast parameters of the floating wind turbine model in reaching a target draft state includes:

[0014] calculating, according to the inherent structural characteristic data, the total mass of ballast, the center of gravity position of the total ballast, and the ballast mass of each cabin of the floating wind turbine model;

[0015] obtaining the ballast sizes of each cabin according to the ballast mass of each cabin.

[0016] In one embodiment, the calculating the hydrostatic righting moment of the floating wind turbine model after the ballast configuring includes:

[0017] transmitting a preset inclination angle to the floating wind turbine model after the ballast configuring; the preset inclination angle is used to control the inclination of the floating wind turbine model after the ballast configuring;

[0018] obtaining the inherent structural characteristic data of the inclined floating wind turbine model;

[0019] obtaining the hydrostatic righting moment according to the inherent structural characteristic data of the inclined floating wind turbine model.

[0020] In one embodiment, after the obtaining the inherent structural characteristic data of the inclined floating wind turbine model, and before the obtaining the hydrostatic righting moment according to the inherent structural characteristic data of the inclined floating wind turbine model, the method further includes:

[0021] judging whether the inclined floating wind turbine model is in a static equilibrium state;

[0022] if yes, executing the obtaining the hydrostatic righting moment according to the inherent structural characteristic data of the inclined floating wind turbine model;

[0023] if no, adjusting the draft depth of the inclined floating wind turbine model, and returning to the obtaining the inherent structural characteristic data of the inclined floating wind turbine model.

[0024] In one embodiment, the obtaining the stability constant of the floating wind turbine model according to the hydrostatic righting moment includes:

[0025] obtaining the stability constant of the floating wind turbine model according to the hydrostatic righting moment and the overturning moment of the floating wind turbine model.

[0026] In one embodiment, the floating wind turbine model is a parameterized three-dimensional geometric model constructed according to a parent design of the floating wind turbine structure and preset constraint conditions.

[0027] In a second aspect, the present application further provides a floating wind turbine structure stability analysis device, which comprises:

[0028] a data acquisition module configured to acquire inherent structural characteristic data of a floating wind turbine model; the floating wind turbine model is a parameterized three-dimensional geometric model constructed according to a parent design of the floating wind turbine structure;

[0029] a ballast configuration module configured to configure ballast of the floating wind turbine model in a static force balance state according to the inherent structural characteristic data;

[0030] a data calculation module configured to calculate hydrostatic restoring moment of the floating wind turbine model in a preset inclination angle after the ballast is configured;

[0031] a stability analysis module configured to obtain a stability constant of the floating wind turbine model according to the hydrostatic restoring moment; the stability constant is used to represent a stable state of the floating wind turbine model.

[0032] In a third aspect, the present application further provides a floating wind turbine structure stability analysis device, which comprises an analysis unit, a data transmission unit and a modeling unit, the analysis unit is in communication connection with the modeling unit through the data transmission unit, the modeling unit is configured to construct a floating wind turbine model according to a parent design of the floating wind turbine structure, and transmit inherent structural characteristic data of the floating wind turbine model to the analysis unit through the data transmission unit, and the analysis unit realizes the following steps when the floating wind turbine structure stability analysis method is executed:

[0033] acquire inherent structural characteristic data of a floating wind turbine model; the floating wind turbine model is a parameterized three-dimensional geometric model constructed according to a parent design of the floating wind turbine structure;

[0034] configure ballast of the floating wind turbine model in a static force balance state according to the inherent structural characteristic data;

[0035] calculate hydrostatic restoring moment of the floating wind turbine model in a preset inclination angle after the ballast is configured;

[0036] obtain a stability constant of the floating wind turbine model according to the hydrostatic restoring moment; the stability constant is used to represent a stable state of the floating wind turbine model.

[0037] In a fourth aspect, the present application provides a computer device. The computer device comprises a memory and a processor. The memory stores a computer program. The processor implements the following steps when executing the computer program:

[0038] obtaining inherent structural property data of a floating wind turbine model; the floating wind turbine model is a parameterized three-dimensional geometric model constructed according to a parent shape design of a floating wind turbine structure;

[0039] configuring ballast of the floating wind turbine model in a static force balance state according to the inherent structural property data;

[0040] calculating a static water restoring moment of the floating wind turbine model in a preset inclination angle after the ballast is configured;

[0041] obtaining a stability constant of the floating wind turbine model according to the static water restoring moment; the stability constant is used to represent a stable state of the floating wind turbine model.

[0042] In a fifth aspect, the present application provides a computer readable storage medium. The computer readable storage medium stores a computer program. The computer program is executed by a processor to implement the following steps:

[0043] obtaining inherent structural property data of a floating wind turbine model; the floating wind turbine model is a parameterized three-dimensional geometric model constructed according to a parent shape design of a floating wind turbine structure;

[0044] configuring ballast of the floating wind turbine model in a static force balance state according to the inherent structural property data;

[0045] calculating a static water restoring moment of the floating wind turbine model in a preset inclination angle after the ballast is configured;

[0046] obtaining a stability constant of the floating wind turbine model according to the static water restoring moment; the stability constant is used to represent a stable state of the floating wind turbine model.

[0047] In a sixth aspect, the present application provides a computer program product. The computer program product comprises a computer program. The computer program is executed by a processor to implement the following steps:

[0048] obtaining inherent structural property data of a floating wind turbine model; the floating wind turbine model is a parameterized three-dimensional geometric model constructed according to a parent shape design of a floating wind turbine structure;

[0049] configuring ballast of the floating wind turbine model in a static force balance state according to the inherent structural property data;

[0050] calculating a hydrostatic restoring moment of the floating wind turbine model under a preset inclination angle after the configuration of the ballast;

[0051] obtaining a stability constant of the floating wind turbine model according to the hydrostatic restoring moment; the stability constant is used to represent a stable state of the floating wind turbine model.

[0052] The floating wind turbine structure stability analysis method, device, equipment, computer device, computer readable storage medium and computer program product have the following advantages. The inherent structural characteristic data of the floating wind turbine model is obtained, and the ballast of the floating wind turbine model in a static force balance state is configured according to the inherent structural characteristic data. Then, the hydrostatic restoring moment of the floating wind turbine model after the configuration of the ballast is calculated under a preset inclination angle, and then the stability constant is obtained. The floating wind turbine model is analyzed according to the stability constant. The entire analysis process is automated, the ballast is automatically configured, and the analysis of the stability constant is automatically performed. The automatic adjustment and automatic analysis of the floating wind turbine structure stability analysis are realized, and the efficiency of the floating wind turbine stability analysis is improved. A large amount of stability analysis of floating wind turbine structure design schemes can be automatically completed in a short time, and the efficiency of the floating wind turbine structure selection and optimization design scheme in the conceptual design stage is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0053] Figure 1 An application environment diagram of the floating wind turbine structure stability analysis method in an embodiment;

[0054] Figure 2 A flowchart of the floating wind turbine structure stability analysis method in an embodiment;

[0055] Figure 3 A flowchart of the step of configuring the ballast of the floating wind turbine model in a static force balance state according to the inherent structural characteristic data in an embodiment;

[0056] Figure 4 A flowchart of the step of calculating the ballast parameter of the floating wind turbine model under a target draft state according to the inherent structural characteristic data in an embodiment;

[0057] Figure 5 A flowchart of the step of calculating the hydrostatic restoring moment of the floating wind turbine model under a preset inclination angle after the configuration of the ballast in an embodiment;

[0058] Figure 6 A flowchart of the step of calculating the hydrostatic restoring moment of the floating wind turbine model under a preset inclination angle after the configuration of the ballast in another embodiment;

[0059] Figure 7 A flowchart of the floating wind turbine structure stability analysis method in another embodiment;

[0060] Figure 8 A structural block diagram of a stability analysis device for a floating wind turbine structure in an embodiment;

[0061] Figure 9 A ballast configuration diagram of a three-column semi-submersible wind turbine platform in an embodiment;

[0062] Figure 10 A structural diagram of a three-column semi-submersible wind turbine in an embodiment;

[0063] Figure 11 A roll angle-static water restoring force curve diagram of a three-column semi-submersible wind turbine structure in an embodiment;

[0064] Figure 12 A pitch angle-static water restoring force curve diagram of a three-column semi-submersible wind turbine structure in an embodiment;

[0065] Figure 13 An implementation flowchart of parameterized modeling and stability analysis of a floating wind turbine model in an embodiment;

[0066] Figure 14 An internal structure diagram of a computer device in an embodiment. DETAILED DESCRIPTION

[0067] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application is further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application.

[0068] It can be understood that, in the following embodiments, “connection” between the circuits, modules, units, etc. connected to each other should be understood as “electrical connection”, “communication connection” and the like if there is transmission of electrical signals or data between them.

[0069] As used herein, the singular forms “a”, “an” and “the” can include plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprise / comprises” or “have / have” specify the presence of stated features, integers, steps, operations, components, parts or combinations thereof, but do not exclude the presence or addition of one or more other features, integers, steps, operations, components, parts or combinations thereof.

[0070] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.

[0071] The floating wind turbine structure stability analysis method provided by the embodiments of the application can be applied to the application environment as shown in Figure 1 The analysis unit 102 is connected to the data transmission unit 104, and the data transmission unit 104 is connected to the modeling unit 106. The modeling unit 106 is configured to construct a parameterized three-dimensional geometric model, i.e., a floating wind turbine model, according to a parent design of the floating wind turbine structure. The analysis unit 102 is connected to the modeling unit 106 through the data transmission unit 104, and obtains inherent structural characteristic data of the floating wind turbine model in the modeling unit 106. The analysis unit 102 can analyze the stability of the floating wind turbine structure according to the inherent structural characteristic data of the floating wind turbine model and preset inclination data stored in the analysis unit 102.

[0072] The analysis unit 102 and the modeling unit 106 can also be connected to the interactive unit 108. The parent design of the floating wind turbine structure can be input by a user through the interactive unit 108, and then transmitted to the modeling unit 106 by the interactive unit 108. The modeling unit 106 constructs the floating wind turbine model in a parameterized manner according to the parent design of the floating wind turbine structure. In addition, the modeling unit 106 can transmit the constructed floating wind turbine model and the inherent structural characteristic data of the floating wind turbine model to the interactive unit 108, and display the floating wind turbine model and the inherent structural characteristic data through the interactive unit 108. The analysis unit 102 analyzes the stability of the floating wind turbine structure, and obtains a stable state result. The stable state result can also be displayed through the interactive unit 108.

[0073] In one embodiment, as shown in Figure 2 , a floating wind turbine structure stability analysis method is provided. The analysis unit in the method is taken as an example for illustration, and the method includes the following steps: Figure 1

[0074] Step 202: Obtain inherent structural characteristic data of the floating wind turbine model.

[0075] ​The floating wind turbine model is a parameterized three-dimensional geometric model constructed according to the parent design of the floating wind turbine structure. The floating wind turbine is a new type of offshore wind turbine, which is also commonly called a floating wind turbine. The floating wind turbine can float on the sea surface to utilize wind energy to generate electric energy. The wind makes the blades of the floating wind turbine rotate, and the wind turbine converts the kinetic energy into electric energy, which is transmitted to the offshore substation through the underwater cable. The floating wind turbine usually needs to be fixed in position by mooring and to distribute mass and weight through the design of the structure. The structural sketch and initial parameters for designing the floating wind turbine are referred to as the parent design of the floating wind turbine structure. The inherent structural characteristic data of the floating wind turbine structure is obtained according to the structural design of the floating wind turbine, and the inherent structural characteristic data represents the physical characteristics possessed by the structure of the floating wind turbine.

[0076] Specifically, the analysis unit obtains the inherent structural characteristic data of the floating wind turbine model. The inherent structural characteristic data can be obtained from the modeling unit through the data transmission unit, or can be obtained through other means. Optionally, the analysis unit not only obtains the inherent structural characteristic data of the floating wind turbine model, but also obtains other design data of the floating wind turbine.

[0077] Illustratively, the inherent structural characteristic data of the floating wind turbine model includes mass, center of gravity, position of the center of buoyancy, and moment of inertia, etc.

[0078] Step 204, according to the inherent structural characteristic data, configuring the ballast of the floating wind turbine model in the static force balance state.

[0079] The static force balance is a state of force, in which the structure is in a state of rest relative to the surrounding objects under the action of static load, and the structure is said to be in a state of static force balance. In order to keep the floating wind turbine in a state of static force balance on the sea surface, the floating wind turbine needs to be configured with ballast. The specific way is to mark the hollow structure inside the floating wind turbine as one or more cabins, and to configure a certain mass of weight in each cabin, which is called ballast.

[0080] Specifically, the analysis unit calculates the required ballast mass of the floating wind turbine model according to the inherent structural characteristic data and the static force balance formula of the floating wind turbine, and converts the ballast mass into the ballast size of each cabin, to complete the ballast configuration of the floating wind turbine model in the static force balance state.

[0081] Optionally, after configuring the ballast of the floating wind turbine model in the static force balance state, the corresponding floating wind turbine model will also be changed. Specifically, the modeling unit receives the ballast configuration of the analysis unit through the data transmission unit, updates the floating wind turbine model in real time according to the ballast configuration, and updates the corresponding parameters in the parent design of the floating wind turbine structure.

[0082] For example, the ballast configuration is not unique, and concrete or seawater can be used as ballast.

[0083] In step 206, the hydrostatic restoring moment of the floating wind turbine model after the ballast configuration at a preset inclination angle is calculated.

[0084] The stability analysis of the floating wind turbine structure is mainly to test whether the self-righting ability of the floating wind turbine structure, i.e., the risk resistance ability, meets the use requirements when the floating wind turbine is tilted due to strong wind or uneven force during operation on the sea surface. The static water restoring moment is usually used to represent the anti-overturning ability of the floating wind turbine structure. The static water restoring moment refers to the moment that makes the floating wind turbine structure right when the floating wind turbine tilts and performs longitudinal rocking motion in seawater. The size is proportional to the angle of the floating wind turbine relative to the static water surface.

[0085] Specifically, the floating wind turbine model after the ballast configuration satisfies the static balance condition. On this basis, a preset inclination angle value is set, the tilted floating wind turbine model is adjusted to be in static balance again, and the static water restoring moment under the tilted state is calculated according to the inherent structural characteristic data of the tilted floating wind turbine model.

[0086] Optionally, the preset inclination angle can be an inclination angle value or a set of inclination angle values.

[0087] In step 208, the stability constant of the floating wind turbine model is obtained according to the hydrostatic restoring moment.

[0088] The stability constant is used to represent the stable state of the floating wind turbine model. The stability constant is an important basis for evaluating the stability of the offshore floating structure, and the stability constant can be used to quantify the anti-overturning ability of the floating wind turbine structure.

[0089] Specifically, under the preset inclination angle, the analysis unit can calculate the hydrostatic restoring moment under the preset inclination angle and the overturning moment under the preset inclination angle according to the inherent structural characteristic data of the tilted floating wind turbine model. According to the hydrostatic restoring moment under the preset inclination angle and the overturning moment under the preset inclination angle, the stability constant of the floating wind turbine model is obtained. The size of the stability constant represents the stability performance of the floating wind turbine model. When the stability constant is greater than the preset stability constant, it is judged that the stability of the floating wind turbine model is good, and the stability analysis is qualified.

[0090] In the floating wind turbine structure stability analysis method, the inherent structural characteristic data of the floating wind turbine model is obtained, ballast of the floating wind turbine model in a static force balance state is configured according to the inherent structural characteristic data. Then, the static water restoring moment of the floating wind turbine model after the ballast is configured is calculated under a preset inclination angle, and a stability constant is obtained. The floating wind turbine model is analyzed according to the stability constant. The whole analysis process is automated, the ballast is automatically configured, and the analysis of the stability constant is automatically performed. The automatic adjustment and automatic analysis of the floating wind turbine structure stability analysis are realized, and the efficiency of the stability analysis of the floating wind turbine is improved. A large amount of stability analysis of the floating wind turbine structure design scheme can be automatically completed in a short time, and the efficiency of the floating wind turbine structure selection and optimization design scheme in the conceptual design stage is significantly improved.

[0091] In one embodiment, as shown in FIG. 3, Figure 3 Step 204 includes step 302 and step 304.

[0092] Step 302, according to the inherent structural characteristic data, the ballast parameters of the floating wind turbine model in the target water state are calculated.

[0093] The water state refers to the vertical distance from the bottom of the floating wind turbine structure to the connection between the floating wind turbine structure and the water surface, which indirectly reflects the buoyancy of the floating wind turbine structure. The greater the water depth of the floating wind turbine structure, the greater the load of the floating wind turbine. The ballast parameters are the parameters of the ballast configured according to the model, size and structural design of the floating wind turbine, which usually refer to the density and size of the ballast in the configured cabin of the floating wind turbine model.

[0094] Specifically, when designing the parent shape of the floating wind turbine structure, the designer will set a target water depth of the floating wind turbine. Based on the relationship between the floating wind turbine model in the target water state and the static force balance state, the ballast parameters of the floating wind turbine model in the target water state in the static force balance state are calculated according to the inherent structural characteristic data, such as total mass and total center of gravity position.

[0095] Step 304, according to the ballast parameters, the floating wind turbine model is ballasted.

[0096] Specifically, the ballast configuration of the floating wind turbine model refers to the ballast configuration of the cabin designed in the floating wind turbine model. According to the ballast parameters, the cabin of the floating wind turbine model that needs to be ballasted is configured, the ballast of the floating wind turbine model is adjusted one by one, and the parameters of the floating wind turbine model are adjusted according to the ballast configuration. After the ballast configuration, the modeling unit can also update the floating wind turbine model to the floating wind turbine model after the ballast configuration.

[0097] Optionally, when the cabin is one, the ballast parameters include total ballast mass, total ballast center of gravity and ballast size in the cabin. When the cabins are multiple, the ballast parameters include total ballast mass, total ballast center of gravity, ballast mass of each cabin and ballast size of each cabin.

[0098] In the embodiment, the parameter optimization of the floating wind turbine model is performed by calculating the ballast parameters of the floating wind turbine model in reaching the target draft state according to the inherent structural characteristic data, and adjusting the ballast configuration of the floating wind turbine model according to the ballast parameters. The ballast parameters of each cabin in the floating wind turbine model are configured so that the total ballast mass and the total ballast center of gravity meet the static balance state, and are configured according to the required ballast parameters of the target draft state. The design scheme reliability of the floating wind turbine is ensured.

[0099] In one embodiment, as shown in FIG. 4, the ballast parameters include the ballast size, and the step 302 includes a step 402 and a step 404. Figure 4

[0100] The step 402 calculates the total ballast mass, the total ballast center of gravity and the ballast mass of each cabin of the floating wind turbine model according to the inherent structural characteristic data.

[0101] Specifically, the inherent structural characteristic data of the floating wind turbine model is obtained, including the mass, the displacement, the center of gravity, the center of buoyancy and the moment of inertia of each structure of the floating wind turbine model. The analysis unit also obtains the parent design related data of the floating wind turbine structure. According to the force relationship, the static balance equation of the structural gravity, the mooring pre-tension and the buoyancy is established:

[0102] m balst = ρV sub -m ptfim -m tarb -T moor，z / g (1)

[0103] In the equation, m balst is the ballast mass; ρ is the seawater density; V sub is the displacement of the floating wind turbine model structure in reaching the target draft state; m ptfm is the mass of the floating platform of the floating wind turbine model; m turb is the mass of the wind turbine of the floating wind turbine model; T moor，z is the vertical pre-tension of the mooring system applied to the floating wind turbine model; and g is the gravity acceleration.

[0104] In the equation, the ballast mass m balst , the platform mass m ptfm and the wind turbine mass m turb ​The sum of the total mass of the floating wind turbine model. Mooring system is a positioning system to limit the position of the floating wind turbine model, which is provided at the platform end point of the floating wind turbine model. The total ballast mass can be obtained from equation (1).

[0105] Further, under the premise of satisfying equation (1), taking any point in the floating wind turbine model as the coordinate origin, the center of gravity position of the total ballast is calculated according to the static torque balance relationship caused by gravity and buoyancy from equation (2) and equation (3):

[0106] m balst gx balst = ρgV sub x CoB -m ptfm gx ptfm -m turb gx turb -M moor，y (2)

[0107] In the formula, x balst is the x-axis center of gravity coordinate of the ballast; x CoB is the x-axis floating center coordinate of the floating wind turbine model; x ptfm is the x-axis center of gravity coordinate of the platform; x turb is the x-axis center of gravity coordinate of the wind turbine; M m oor, y is the torque around the y-axis exerted by the mooring system on the floating wind turbine model.

[0108] m ballst gy balst = ρgV sub y CoB -m ptfm gy ptfm -m turb g yturb -M moor，x (3)

[0109] In the formula, y balst is the y-axis center of gravity coordinate of the ballast; y CoB is the y-axis floating center coordinate of the floating wind turbine model; y ptfm is the y-axis center of gravity coordinate of the platform; y turb is the y-axis center of gravity coordinate of the wind turbine; M moor，x is the torque around the x-axis exerted by the mooring system on the floating wind turbine model.

[0110] Then, according to the following equation, the ballast configuration of each cabin is carried out:

[0111]

[0112]

[0113]

[0114] In formula (4) to formula (6), m balst，i is the mass of the ballast arranged in the ith cabin; x balst，i is the x-axis barycentric coordinate of the ballast arranged in the ith cabin; y balst，i is the y-axis barycentric coordinate of the ballast arranged in the ith cabin.

[0115] The mass and barycentric position of the ballast arranged in each cabin can be determined by using formula (4) to formula (6). Meanwhile, in combination with the specific structural form of the floating platform and the arrangement mode of the ballast cabin, an additional constraint equation is added to obtain a unique solution of the mass m balst，i of the ballast in each cabin.

[0116] For example, in the design of a floating wind turbine, the floating platform adopts an equilateral triangle arrangement, and three columns are located at the vertices of the triangle and are connected through a rectangular pontoon at the bottom. The wind turbine is installed on one of the columns, which is the middle column, and the other two columns without the wind turbine are outer columns. An additional constraint equation is established with the center of the intersection between the middle column and the waterline as the coordinate origin to calculate the ballast mass in each cabin.

[0117] It is assumed that the ballast is arranged in the cabins of the two outer columns and the bottom rectangular pontoon, and the cabin of the middle column is not arranged with ballast, and the total ballast mass is:

[0118] m balst = m balst，1 + m balst，3 , m balst，2 = 0 (7)

[0119] In formula (7), m balst，1 and m balst，3 are the ballast masses of the outer columns and the pontoon, respectively; and m balst，2 is the ballast mass of the middle column.

[0120] Correspondingly, the ballast barycentric position is constrained according to the ballast mass:

[0121]

[0122] y balst = y balst，1 = y balst，3 = 0 (9)

[0123] In formula (8) and formula (9), x balst，1 and x balst，3 are the x-axis barycentric positions of the ballast of the outer columns and the pontoon, respectively; and y balst，1 and y balst，3 are the y-axis barycentric positions of the ballast of the outer columns and the pontoon, respectively.

[0124] Using equations (7) to (9) as constraints, the product of the pontoon height, the bottom area of ​​the pontoon compartment, and the density of the ballast is calculated as a criterion. This criterion is the maximum ballast weight that the compartment can accommodate. The obtained m balst，1 The magnitude of the maximum counterweight value. When m balst，1 When the value is less than the maximum counterweight, m ​​is calculated according to equations (7) to (9). balst，3 When m balst，1 If the value is greater than or equal to the maximum counterweight, then the central column must also be equipped with ballast. Calculate m according to the following equations (10) to (13). balst，2 and m balst，3 .

[0125] m balst =m balst，1 +m balst，2 +m balst，3 (10)

[0126] n balst，1 =(h pontn -2t pontn A pontn ρ b (11)

[0127] In the above formula, h pontn t is the height of the pontoon of the floating platform. pontn A is the thickness of the pontoon wall; pontn ρ is the bottom area of ​​the pontoon compartment; b The density is the ballast material.

[0128]

[0129] y balst =y balst，1 =y balst，2 =y balst，3 =0 (13)

[0130] In equations (12) and (13), x balst,2 The x-axis position of the center of gravity of the central column ballast; y balst,2 This is the position of the center of gravity of the y-axis of the central column ballast.

[0131] This allows us to obtain the ballast mass of each compartment.

[0132] Step 404: Obtain the ballast dimensions of each compartment based on the ballast mass of each compartment.

[0133] Ballast dimensions include volume-related parameters such as the length, width, and height of the ballast. In floating wind turbine structures, seawater or concrete is often used as ballast. In this case, the length and width of the ballast are determined by the structure of each compartment, and the ballast dimensions mainly refer to the height of the ballast.

[0134] Specifically, the ballast weight of each cabin is obtained according to the specific structure form of each cabin and the arrangement mode of the ballast cabin, and the ballast size is input into the cabin corresponding to the floating fan model to complete the ballast configuration. The input ballast size can also correspond to change the parameter data of the floating fan model, and then change the inherent structural characteristic data of the floating fan model, and then update the floating fan three-dimensional model and obtain the structural inherent characteristic data.

[0135] In the embodiment, the static force balance equation is established by analyzing the force relationship, the constraint condition is set according to the specific structure form of each cabin and the arrangement mode of the ballast cabin, and the ballast weight of each cabin is calculated according to the inherent structural characteristic data and converted into the ballast size. The automatic configuration of the ballast of each cabin in the floating fan model is realized, and the floating fan model is adjusted to keep static force balance in the target draft state.

[0136] In one embodiment, as shown in FIG. 5, step 206 includes step 502, step 504 and step 506. Figure 5

[0137] Step 502, the preset inclination is transmitted to the floating fan model after the ballast is configured.

[0138] The preset inclination is used to control the inclination of the floating fan model after the ballast is configured.

[0139] The floating fan model after the ballast is configured has reached the static force balance in the target draft state, at this time, the stability analysis of the floating fan model is started. Specifically, the preset inclination input by the user is obtained, and the preset inclination is transmitted to the floating fan model after the ballast is configured, at this time, the floating fan model after the ballast is configured is inclined due to the preset inclination, and the force state is changed.

[0140] Further, the preset inclination can be an inclination value or a set of inclination values. When the preset inclination is a set of inclination values, the inclination value range and the discrete step can be input by the user.

[0141] Optionally, the preset inclination can be the roll angle of the floating fan model around the x axis, or the pitch angle around the y axis.

[0142] Step 504, the inherent structural characteristic data of the inclined floating fan model is obtained.

[0143] ​Specifically, the inclined floating wind turbine model has different inherent structural characteristic data from the non-inclined floating wind turbine model, and floating wind turbine models with different inclination angles also have different inherent structural characteristic data. The analysis unit obtains the inherent structural characteristic data of the inclined floating wind turbine model, which can be obtained from the modeling unit through the data transmission unit or through other means. Optionally, the analysis unit not only obtains the inherent structural characteristic data of the inclined floating wind turbine model, but also obtains other design data of the inclined floating wind turbine model.

[0144] In step 506, the hydrostatic restoring moment is obtained according to the inherent structural characteristic data of the inclined floating wind turbine model.

[0145] Specifically, the horizontal distance between the center of gravity and the center of buoyancy of the inclined floating wind turbine model is obtained according to the inherent structural characteristic data of the inclined floating wind turbine model, and the couple composed of the buoyancy and the gravity, i.e. the hydrostatic restoring moment, is calculated from the horizontal distance between the center of gravity and the center of buoyancy.

[0146] In this embodiment, a preset inclination angle is set for the floating wind turbine model, and the inherent structural characteristic data of the inclined floating wind turbine model is obtained. According to the inherent structural characteristic data of the inclined floating wind turbine model, the hydrostatic restoring moment under the preset inclination angle is calculated. The hydrostatic restoring moment under each inclination angle is obtained, and the automation of the stability analysis of the floating wind turbine model is realized.

[0147] In one embodiment, as shown in FIG. 6, after step 504 and before step 506, steps 602 and 604 are further included. Figure 6

[0148] In step 602, it is judged whether the inclined floating wind turbine model is in a static force balance state.

[0149] When the stability of the floating wind turbine model is analyzed, it is necessary to ensure that the buoyancy and gravity of the floating wind turbine model are in a static force balance state, and the test data obtained under this state can be used as the data for stability analysis. Specifically, according to the inherent structural characteristic data of the inclined floating wind turbine model and other related design parameters, formula (1) is substituted, if formula (1) is established, it is proved that the inclined floating wind turbine model is in a static force balance state; if formula (1) is not established, it is proved that the inclined floating wind turbine model is not in a static force balance state.

[0150] If the inclined floating wind turbine model is in a static force balance state, step 506 is executed.

[0151] Specifically, when the inclined floating wind turbine model is in a static force balance state, the calculation of the hydrostatic restoring moment can be directly performed.

[0152] ​If the tilted floating wind turbine model is not in static force balance state, step 604 is performed to adjust the draft of the tilted floating wind turbine model, and step 504 is returned.

[0153] When the tilted floating wind turbine model is not in static force balance state, the tilted floating wind turbine model needs to be adjusted to be in static force balance state so as to facilitate subsequent stability analysis. Specifically, the draft of the tilted floating wind turbine model is automatically adjusted by using an optimization algorithm, and after adjustment, step 504 is returned. That is, the adjusted inherent structural characteristic data is obtained, and step 602 is performed to determine again whether the tilted floating wind turbine model is in static force balance state.

[0154] Optionally, the draft of the tilted floating wind turbine model is adjusted by using an optimization algorithm. The optimization algorithm can be a trust-region dogleg algorithm, or can be other types of optimization algorithms.

[0155] In the embodiment, whether the tilted floating wind turbine model is in static force balance state is determined, and when the tilted floating wind turbine model is not in static force balance state, balance is achieved by adjusting the draft of the floating wind turbine model. The accuracy of the stability analysis result is ensured.

[0156] In one embodiment, as shown in FIG. 7, step 208 includes step 702. Figure 7

[0157] Step 702 obtains the stability constant of the floating wind turbine model according to the static water restoring moment and the overturning moment of the floating wind turbine model.

[0158] The overturning moment refers to the moment that causes the self-propelled machine or equipment to overturn. In the application scenario of the floating wind turbine, the overturning moment is usually provided by wind, and in the present scheme, it can also be referred to as wind overturning moment.

[0159] Specifically, the overturning moment of the floating wind turbine model can be calculated according to the inherent structural characteristic data of the floating wind turbine model, the static water restoring moment is compared with the overturning moment, and a proportionality number is obtained. The proportionality number is the stability constant, and the size of the stability constant represents the stability performance of the floating wind turbine model. When the stability constant is greater than the value of the preset stability constant, it is determined that the stability of the floating wind turbine model is good, and the stability analysis is qualified.

[0160] Optionally, the size of the preset stability constant is not limited, and is usually 1.3.

[0161] In the embodiment, the stability constant of the floating wind turbine model is obtained according to the static water restoring moment and the overturning moment of the floating wind turbine model, and the stability analysis of the floating wind turbine model is realized. Since the static water restoring moment and the overturning moment can be automatically calculated, the analysis efficiency is improved.​

[0162] In one embodiment, the floating wind turbine model is a parameterized three-dimensional geometric model constructed according to a mother design of the floating wind turbine structure and preset constraint conditions.

[0163] Specifically, the floating wind turbine model is obtained according to the mother design of the floating wind turbine structure. After the user performs basic processing such as stretching and cutting on the mother design sketch of the floating wind turbine structure, the user sets the parameterized geometric dimensions in the floating wind turbine structure. These geometric dimensions are automatically mapped to corresponding components in the construction process of the floating wind turbine model. In the mapping process, the position relationship between different geometries is specified by the preset constraint conditions, so that the finally generated floating wind turbine model conforms to the basic characteristics of the mother design.

[0164] Further, after the three-dimensional modeling of the floating wind turbine model is completed, a design table is also exported. The design table contains all the geometric parameters defined by the user, and the geometric parameters in the design table are directly associated with the component sizes in the floating wind turbine model by corresponding mapping. The modification of the three-dimensional floating wind turbine model can be quickly completed by modifying the geometric parameters in the design table.

[0165] For example, the user sets an equilateral triangle-shaped floating platform as the support structure of the wind turbine. When the user inputs the length data of one floating platform, the other two sides are automatically assigned equal values, so that the equilateral triangle shape remains unchanged.

[0166] In this embodiment, by directly associating the geometric parameters of the mother design of the floating wind turbine structure with the floating wind turbine model, the modification of the structure shape and attitude of the floating wind turbine model can be quickly realized.

[0167] It should be understood that, although each step in the flowchart involved in each embodiment as described above is displayed in sequence according to the arrow, these steps are not necessarily executed in sequence according to the arrow. Unless otherwise specified herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other sequences. Moreover, at least part of the steps in the flowchart involved in each embodiment as described above can include multiple steps or stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence of these steps or stages is not necessarily sequential, but can be executed in rotation or alternation with at least part of other steps or steps or stages in other steps.

[0168] Based on the same inventive concept, the application further provides a floating wind turbine structure stability analysis device for implementing the floating wind turbine structure stability analysis method described above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, so the specific limitations in one or more floating wind turbine structure stability analysis device embodiments provided below can refer to the limitations of the floating wind turbine structure stability analysis method described above, which will not be repeated here.

[0169] In one embodiment, as shown in Figure 8 a floating wind turbine stability analysis device is provided, comprising: a data acquisition module 802, a ballast configuration module 804, a data calculation module 806, and a stability analysis module 808, wherein:

[0170] The data acquisition module 802 is configured to acquire inherent structural characteristic data of a floating wind turbine model. The floating wind turbine model is a three-dimensional geometric model constructed according to the parent shape design of the floating wind turbine structure.

[0171] The ballast configuration module 804 is configured to configure the ballast of the floating wind turbine model when it is in a static force balance state according to the inherent structural characteristic data.

[0172] The data calculation module 806 is configured to calculate the static water restoring moment of the floating wind turbine model at a preset inclination angle after the ballast is configured.

[0173] The stability analysis module 808 is configured to obtain a stability constant of the floating wind turbine model according to the static water restoring moment. The stability constant is used to represent the stable state of the floating wind turbine model.

[0174] In one embodiment, the ballast configuration module 804 is configured to calculate the ballast parameters of the floating wind turbine model to reach a target draft state according to the inherent structural characteristic data, and to configure the ballast of the floating wind turbine model according to the ballast parameters.

[0175] In one embodiment, the ballast configuration module 804 is configured to calculate the total mass of the ballast, the center of gravity position of the total ballast, and the ballast mass of each cabin of the floating wind turbine model according to the inherent structural characteristic data, and to obtain the ballast size of each cabin according to the ballast mass of each cabin.

[0176] In one embodiment, the data calculation module 806 is configured to transmit the preset inclination angle to the floating wind turbine model after the ballast is configured. The preset inclination angle is used to control the inclination of the floating wind turbine model after the ballast is configured. The inherent structural characteristic data of the inclined floating wind turbine model is acquired, and the static water restoring moment is obtained according to the inherent structural characteristic data of the inclined floating wind turbine model.

[0177] In one embodiment, the data calculation module 806 is further configured to determine whether the tilted floating wind turbine model is in a state of static equilibrium; if so, to obtain the static water restoring torque based on the inherent structural characteristic data of the tilted floating wind turbine model; if not, to adjust the draft of the tilted floating wind turbine model and return the obtained inherent structural characteristic data of the tilted floating wind turbine model.

[0178] In one embodiment, the stability analysis module 808 is used to obtain the stability constant number of the floating wind turbine model based on the hydrostatic restoring moment and the overturning moment of the floating wind turbine model.

[0179] In one embodiment, the floating wind turbine model is a parametric three-dimensional geometric model constructed based on the prototype design of the floating wind turbine structure and preset constraints.

[0180] Based on the same inventive concept, this application also provides a floating wind turbine stability analysis device for implementing the floating wind turbine structural stability analysis method described above. The solution provided by this device is similar to the solution described in the above method. Therefore, the specific limitations of one or more floating wind turbine structural stability analysis device embodiments provided below can be found in the limitations of the floating wind turbine structural stability analysis method described above, and will not be repeated here.

[0181] In one embodiment, such as Figure 1 As shown, a floating wind turbine structural stability analysis device is provided, including an analysis unit 102, a data transmission unit 104, and a modeling unit 106. The analysis unit 102 is communicatively connected to the modeling unit 106 through the data transmission unit 104. The modeling unit 106 is used to construct a floating wind turbine model based on the prototype design of the floating wind turbine structure, and transmits the inherent structural characteristic data of the floating wind turbine model to the analysis unit 102 through the data transmission unit 104. The analysis unit 102 is used to perform floating wind turbine structural stability analysis according to the method of any of the embodiments described above.

[0182] Specifically, the modeling unit 106 is configured to construct a corresponding parameterized three-dimensional geometric model, i.e., a floating wind turbine model, according to the parent design of the floating wind turbine structure, and the analysis unit 102 can control the modeling unit 106 through the data transmission unit 104. The analysis unit 102 controls the modeling unit 106 to calculate the inherent structural characteristic data of the floating wind turbine model through the data transmission unit 104, and obtains the inherent structural characteristic data of the floating wind turbine model. When the analysis unit 102 performs the ballast configuration, the analysis unit 102 sends an instruction to change the ballast-related parameters to the modeling unit 106 through the data transmission unit 104, so as to change the ballast configuration of the floating wind turbine model in the modeling unit 106. During the stability analysis process of the analysis unit 102, the analysis unit 102 sends an instruction to change the inclination angle parameter to the modeling unit 106 through the data transmission unit 104 according to the preset inclination angle, so as to change the inclination angle value of the floating wind turbine model in the modeling unit 106. At the same time, the analysis unit 102 controls the modeling unit 106 to calculate the inherent structural characteristic data again through the data transmission unit 104, and obtains the inherent structural characteristic data to calculate whether the floating wind turbine model reaches static force balance. When the floating wind turbine model has not reached the static force balance state, the analysis unit 102 sends an instruction to change the draft depth parameter to the modeling unit 106 through the data transmission unit 104 according to the optimization algorithm, so as to change the draft depth of the floating wind turbine model in the modeling unit 106. Until the floating wind turbine model is in the static force balance state, the static water restoring moment of the floating wind turbine model under the preset inclination angle is calculated, and the stability analysis of the floating wind turbine model is performed.

[0183] The analysis unit 102 and the modeling unit 106 can also be connected to the interactive unit 108. The parent design of the floating wind turbine structure can be input by a user through the interactive unit 108, and then transmitted to the modeling unit 106 by the interactive unit 108. The modeling unit 106 constructs the floating wind turbine model in a parameterized manner according to the parent design of the floating wind turbine structure. Moreover, the modeling unit 106 can also transmit the constructed floating wind turbine model and the inherent structural characteristic data of the floating wind turbine model to the interactive unit 108 for display through the interactive unit 108. The preset inclination angle data used by the analysis unit 102 for the stability analysis of the floating wind turbine can be stored in the analysis unit 102, input by a user through the interactive unit 108, or automatically generated from the data input by the user to generate a preset inclination angle data set in turn. The analysis unit 102 performs the stability analysis of the floating wind turbine to obtain a stable state result. The stable state result can also be displayed through the interactive unit 108.

[0184] Further, when the analysis unit 102 obtains the static water restoring moment according to different preset inclination angles, the inclination angle-static water restoring moment curve can be output through the interactive unit 108 to more directly display the stability analysis result of the floating wind turbine model.

[0185] Optionally, the analysis unit 102 can be a software Matlab (a commercial mathematical software), the modeling unit 106 can be a CATLA software (a three-dimensional design software) in CAD, and the data transmission unit 104 can be a connection between the analysis unit 102 and the modeling unit 106 by using a DLL (dynamic link library).

[0186] In order to better understand the above scheme, the application scenario shown in Figure 1 is combined, and the following is explained and described in detail in combination with a specific embodiment.

[0187] In an embodiment, a floating wind turbine model is designed as shown in Figure 9 and Figure 10 , and the design values of the floating wind turbine model are shown in Table 1. The modeling-stability analysis process is shown in Figure 13 .

[0188] Table 1 Three-column semi-submersible wind turbine structure parameters

[0189] Parameter Character Parameter Name Unit Value r TwrT ]]> Tower top radius m 2.250 [CAT TwrT ]]> Tower top wall thickness m 0.030 r TwrBs ]]> Tower bottom radius m 4.200 [CAT TwrBs ]]> Tower bottom wall thickness m 0.060 r Column radius m 7 [cat col ]]> Column wall thickness m 0.040 d Column spacing m 68 w pontn ]]> Pontoon width m 14 h pontn ]]> Pontoon height m 5 [cat pontn ]]> Pontoon wall thickness m 0.040 h Column above water height m 10 h d ]]> Draft m 18 h bl ]]> Pontoon ballast height m 0.994 h b2 ]]> Center column ballast height m 4.338 h b3 ]]> Outer column ballast height m 10.136 x ]]> ​ Platform roll angle (heel angle) about x-axis ° 0 y ]]> ​ Platform pitch angle (trim angle) about y-axis ° 0 z Platform z-displacement m 0

[0190] First, the parent design of the floating wind turbine structure is selected. The floating wind turbine model is a floating wind turbine model of a certain 10MW three-column semi-submersible wind turbine structure, which is composed of an impeller 1, a cabin 2, a tower 3, a central column 4, an outer column 5, a floating box 6, and a mooring 7. The floating platform is arranged in an equilateral triangle, and the three columns are located at the vertices of the triangle and are connected through the rectangular floating box 6 at the bottom.

[0191] Before parameterized modeling in CATLA, 18 geometric parameters are defined in the parameter library, a three-dimensional floating wind turbine model is established, and the set physical parameters are given to the corresponding components of the floating wind turbine model through size constraints. The design table is exported, as shown in Table 1. The design table builds the association of the 18 parameters and the three-dimensional model through corresponding mapping, and subsequent modification of the numerical values of the parameters in the design table can realize the update of the floating wind turbine model.

[0192] Matlab controls CATLA to calculate the inherent structural property data of the floating wind turbine model through a DLL, and transmits the data to Matlab. By configuring ballast for the floating wind turbine model in the target draft state, the floating wind turbine model reaches static equilibrium in a non-inclined state. According to equations (1) to (13), the ballast is configured, and the ballast configuration is updated to the design table synchronously. When the load is configured, the floating box compartment is placed with concrete ballast, and the central column and outer column compartments are placed with seawater ballast.

[0193] After achieving static equilibrium in the non-inclined state, stability analysis is carried out. In this example, the preset inclination range is selected to be -90° to 90°, with a discrete step of 5°, i.e. every 5°, a preset inclination is taken. θ yis modified to -90°, the inherent structural property data including the center of gravity, the center of buoyancy and the displacement volume are measured, and it is determined whether the static equilibrium is achieved at the inclination angle of -90° according to equation (1); if not, the z value in Table 1 is modified until the residual value of equation (1) is within the allowable range. The equation is solved by calling the trust-region dogleg algorithm in Matlab. After the static equilibrium is achieved, the distance between the center of gravity and the center of buoyancy along the x axis is measured, and the hydrostatic righting moment can be conveniently calculated. Subsequently, the θ y is modified to -85°, and the righting moment calculation at the next inclination angle is carried out. After the calculation at all inclination angles is completed, the inclination angle-hydrostatic righting stiffness curve can be plotted.

[0194] Figure 11 and Figure 12 is the inclination angle-hydrostatic righting moment curve of the three-column semi-submersible wind turbine structure obtained according to the inclination angle and the hydrostatic righting moment. The fine line (labeled as 2) in the figure represents the wind heeling moment generated by the floating wind turbine model under the rated power generation condition, and the overturning moment at the inclination angle of 90° is selected to ensure the effectiveness of the stability analysis. The thick line (labeled as 1) in the figure represents the hydrostatic righting moment corresponding to each inclination angle of the floating wind turbine model. The first intersection angle of the righting moment and the wind heeling moment is about 5°, and before the second intersection angle, the area enclosed by the righting moment curve is greater than 1.3 times the area enclosed by the wind heeling moment curve, so it can be determined that the stability of the three-column semi-submersible wind turbine structure meets the requirements. Subsequently, the Matlab program will automatically realize rapid modeling by modifying the main size parameters of the structure in Table 1 to carry out stability analysis of the next design scheme.

[0195] In this embodiment, based on the parametric three-dimensional modeling technology, the floating wind turbine model stability analysis method provided by the present application overcomes the problem of insufficient automation capability of mainstream ocean engineering structure analysis software in stability analysis, and can complete the stability analysis of a large number of design schemes in a short time without manual intervention, which can significantly improve the efficiency of floating wind turbine structure selection and main size optimization design in the conceptual design stage.

[0196] Each module in the floating wind turbine structure stability analysis device described above can be realized by software, hardware and combinations thereof, in whole or in part. Each module described above can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory in the computer device in software form, so as to be called and executed by the processor to perform the operations corresponding to each module.

[0197] In one embodiment, a computer device is provided, which can be a terminal, and the internal structure diagram thereof can be as shown in Figure 14As shown in the figure. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. Among them, the processor, the memory and the input / output interface are connected through the system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control ability. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals in a wired or wireless manner. The wireless manner can be realized through WIFI, mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by the processor to realize a floating wind turbine structure stability analysis method. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen. The input device of the computer device can be a touch layer overlaid on the display screen, or a key, trackball or touchpad arranged on the shell of the computer device, or an external keyboard, touchpad or mouse, etc.

[0198] Those skilled in the art can understand that, Figure 14 The structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied. The specific computer device can include more or fewer components than those shown in the figure, or combine certain components, or have a different component arrangement.

[0199] In one embodiment, a computer device is also provided, including a memory and a processor, the memory storing a computer program, and the processor executing the computer program to realize the steps in each of the above method embodiments.

[0200] In one embodiment, a computer readable storage medium is provided, which stores a computer program, and the computer program is executed by a processor to realize the steps in each of the above method embodiments.

[0201] In one embodiment, a computer program product is provided, including a computer program, and the computer program is executed by a processor to realize the steps in each of the above method embodiments.

[0202] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when the computer program is executed, the processes of the above-mentioned embodiments of the methods can be included. Any reference to memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (Read-Only Memory, ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetoresistive random access memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric memory (Ferroelectric Random Access Memory, FRAM), phase change memory (Phase Change Memory, PCM), graphene memory, etc. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, etc. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.

[0203] Any combination of the technical features of the above embodiments can be made. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0204] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A method for structural stability analysis of a floating wind turbine, characterized in that, The method includes: Obtain the inherent structural characteristic data of the floating wind turbine model; the floating wind turbine model is a parametric three-dimensional geometric model constructed based on the prototype design of the floating wind turbine structure; Based on the inherent structural characteristic data, configure the ballast of the floating wind turbine model when it is in static equilibrium. Calculating the hydrostatic restoring moment of the ballasted floating wind turbine model at a preset tilt angle includes: transmitting the preset tilt angle to the ballasted floating wind turbine model; the preset tilt angle is used to control the tilt of the ballasted floating wind turbine model; acquiring the inherent structural characteristic data of the tilted floating wind turbine model; determining whether the tilted floating wind turbine model is in static equilibrium; if yes, obtaining the hydrostatic restoring moment based on the inherent structural characteristic data of the tilted floating wind turbine model; if no, adjusting the draft of the tilted floating wind turbine model and returning the acquired inherent structural characteristic data of the tilted floating wind turbine model. The stability constant number of the floating wind turbine model is obtained based on the still water restoring moment; this includes: calculating the overturning moment of the floating wind turbine model at a preset tilt angle based on the inherent structural characteristic data of the tilted floating wind turbine model, comparing the still water restoring moment with the overturning moment, and obtaining the ratio as the stability constant number; the stability constant number is used to characterize the stable state of the floating wind turbine model.

2. The method according to claim 1, characterized in that, The step of configuring the ballast of the floating wind turbine model in a static equilibrium state based on the inherent structural characteristic data includes: Based on the inherent structural characteristic data, calculate the ballast parameters of the floating wind turbine model when it reaches the target draft. The floating wind turbine model is configured with ballast according to the ballast parameters.

3. The method according to claim 2, characterized in that, The ballast parameters include ballast dimensions. The calculation of the ballast parameters of the floating wind turbine model under the target draft, based on the inherent structural characteristic data, includes: Based on the inherent structural characteristics data, calculate the total mass of the ballast, the position of the center of gravity of the total ballast, and the ballast mass of each compartment of the floating wind turbine model; The ballast dimensions of each compartment are obtained based on the ballast mass of each compartment.

4. The method according to claim 3, characterized in that, After configuring the ballast of the floating wind turbine model according to the ballast parameters, the method further includes: The ballast dimensions correspond to changes in the inherent structural characteristic data of the floating wind turbine model, thereby updating the three-dimensional model of the floating wind turbine.

5. The method according to claim 1, characterized in that, Adjusting the draft of the tilted floating wind turbine model includes: The draft of the tilted floating wind turbine model is adjusted using an optimization algorithm, which includes a trust region algorithm.

6. The method according to claim 1, characterized in that, After obtaining the stability constant number of the floating wind turbine model based on the hydrostatic restoring torque, the method further includes: If the stability constant is greater than the preset stability constant, the floating wind turbine model is judged to have good stability and the stability analysis is qualified.

7. The method according to claim 6, characterized in that, The preset stable constant number is set to 1.

3.

8. The method according to claim 1, characterized in that, The floating wind turbine model is a parametric three-dimensional geometric model constructed based on the prototype design of the floating wind turbine structure and preset constraints.

9. A floating wind turbine structural stability analysis device, characterized in that, The device includes: The data acquisition module is used to acquire the inherent structural characteristic data of the floating wind turbine model; the floating wind turbine model is a parametric three-dimensional geometric model constructed based on the prototype design of the floating wind turbine structure. A ballast configuration module is used to configure the ballast of the floating wind turbine model when it is in static equilibrium, based on the inherent structural characteristic data. The data calculation module is used to calculate the hydrostatic restoring moment of the ballasted floating wind turbine model at a preset tilt angle; including: transmitting the preset tilt angle to the ballasted floating wind turbine model; the preset tilt angle is used to control the tilt of the ballasted floating wind turbine model; acquiring the inherent structural characteristic data of the tilted floating wind turbine model; determining whether the tilted floating wind turbine model is in a state of static equilibrium; if yes, obtaining the hydrostatic restoring moment based on the inherent structural characteristic data of the tilted floating wind turbine model; if no, adjusting the draft of the tilted floating wind turbine model and returning the acquired inherent structural characteristic data of the tilted floating wind turbine model. The stability analysis module is used to obtain the stability constant number of the floating wind turbine model based on the still water restoring moment; it includes: calculating the overturning moment of the floating wind turbine model at a preset tilt angle based on the inherent structural characteristic data of the tilted floating wind turbine model, comparing the still water restoring moment with the overturning moment, and obtaining the ratio as the stability constant number; the stability constant number is used to characterize the stable state of the floating wind turbine model.

10. A floating wind turbine structural stability analysis device, characterized in that, The system includes an analysis unit, a data transmission unit, and a modeling unit. The analysis unit is communicatively connected to the modeling unit through the data transmission unit. The modeling unit is used to construct a floating wind turbine model based on the prototype design of the floating wind turbine structure and transmit the inherent structural characteristic data of the floating wind turbine model to the analysis unit through the data transmission unit. The analysis unit is used to perform structural stability analysis of the floating wind turbine using the method according to any one of claims 1-8.

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