Stability analysis method for supporting structure of floating type offshore wind power equipment, electronic equipment and computer readable storage medium

Abstract

The invention discloses a stability analysis method for a floating type offshore wind power equipment supporting structure, electronic equipment and a computer readable storage medium, belongs to the field of structural stability analysis, and aims to solve the problems of improving stability analysis reliability and considering efficiency of the floating type offshore wind power equipment supporting structure. The method is characterized in that at least two sequential foundation stability judgment conditions are used for judging the foundation stability of the floating type offshore wind power equipment supporting structure corresponding to model parameters under the environment condition; using at least two acceleration stability judgment conditions with sequence to judge the acceleration stability of the floating type offshore wind power equipment supporting structure corresponding to the model parameters under the environmental condition; if the floating type offshore wind power equipment supporting structure corresponding to the model parameters does not meet at least one of the basic stability and the acceleration stability under the environmental condition, it is judged that the floating type offshore wind power equipment supporting structure corresponding to the model parameters does not meet the stability requirement, and otherwise, the stability requirement is met.

Description

Technical Field

[0001] The present invention belongs to the field of structural stability analysis, and in particular relates to a stability analysis method for a supporting structure of a floating offshore wind power equipment, an electronic device, and a computer-readable storage medium. Background Art

[0002] The supporting structure of a floating offshore wind turbine primarily consists of a floating platform, mooring system, anchor foundation, and tower transition section. The floating platform provides buoyancy to support the turbine, while the mooring system and anchor foundation constrain the platform's displacement and stabilize its position. The transition section cushions vibrations and transmits loads, thus overcoming the limitations of deepwater operations and enabling stable operation in complex wind, wave, and current environments, ultimately realizing the development and utilization of deep-sea wind energy resources.

[0003] However, the design, construction, and operation of floating offshore wind turbine support structures are challenging tasks. These challenges stem primarily from the coupling effects between the wind turbine, the floating offshore wind turbine support structure, and the mooring system. The floating offshore wind turbine support structure plays a crucial role as the intermediate link between the wind turbine and the mooring system.

[0004] The stability of the support structure of floating offshore wind turbines is the key to ensuring that the floating wind turbine platform can operate stably in harsh marine environments, and it is related to the safety of the entire system. At present, stability analysis is mostly based on the static theory of the roll restoring arm curve in still water as a standard to evaluate the stability of the support structure of floating offshore wind turbines. It cannot reflect the complex fluid dynamics phenomena under real wave conditions and cannot fundamentally ensure the stability and safety of the support structure of floating offshore wind turbines. The existing time domain analysis method is extremely reliable. However, it is difficult to model and the analysis time is long. It is difficult to achieve more efficient batch analysis and has great applicability limitations for the design of large-scale floating offshore wind turbine support structures.

[0005] Therefore, in order to improve the stability of the supporting structure of floating offshore wind turbines and ensure the safety and reliability of the overall structure, it is necessary to develop a more comprehensive and effective stability analysis method. This method should fully consider the wave dynamics phenomena of complex fluids and comprehensively improve the reliability of the stability of the supporting structure of floating offshore wind turbines. However, it should also take into account the analysis efficiency so as to be applicable to the stability analysis of the support structure design of a large number of floating offshore wind turbines. Summary of the Invention

[0006] In order to improve the reliability of stability analysis of a floating offshore wind turbine support structure while taking into account efficiency, so as to adapt to the stability analysis of a large number of floating offshore wind turbine support structure designs, in a first aspect, a stability analysis method for a floating offshore wind turbine support structure according to some embodiments of the present application includes: According to the parameters of the model of the floating offshore wind turbine support structure and the environmental conditions, using at least two foundation stability determination conditions in a sequence, determining the foundation stability of the floating offshore wind turbine support structure under the environmental conditions corresponding to the model parameters; The foundation stability judgment step includes: judging the foundation stability judgment conditions one by one according to the order of the foundation stability judgment conditions; if the model parameter satisfies at least one foundation stability judgment condition, the floating offshore wind turbine support structure corresponding to the model parameter satisfies the foundation stability; otherwise, the foundation stability is not satisfied; According to the parameters of the model of the floating offshore wind turbine support structure and the environmental conditions, at least two sequential acceleration stability determination conditions are used to determine the acceleration stability of the floating offshore wind turbine support structure under the environmental conditions corresponding to the model parameters; The acceleration stability determination step includes: determining each acceleration stability determination condition one by one according to the order of the acceleration stability determination conditions; if the model parameter satisfies at least one acceleration stability determination condition, then the floating offshore wind turbine support structure corresponding to the model parameter satisfies the acceleration stability; otherwise, the acceleration stability is not satisfied; If the floating offshore wind turbine support structure corresponding to the model parameters does not satisfy at least one of foundation stability and acceleration stability under environmental conditions, it is determined that the floating offshore wind turbine support structure corresponding to the model parameters does not satisfy the stability requirement; otherwise, the stability requirement is satisfied.

[0007] According to the stability analysis method of the floating offshore wind turbine support structure in some embodiments of the present application, the foundation stability judgment specifically includes: (A) If the parameters of the model of the floating offshore wind turbine support structure satisfy the current foundation stability determination conditions, the model of the floating offshore wind turbine support structure satisfies foundation stability, and the foundation stability determination of the model of the floating offshore wind turbine support structure is terminated; (B) if the parameters of the model of the floating offshore wind turbine support structure do not satisfy the current foundation stability determination condition, taking the next foundation stability determination condition as the current foundation stability determination condition and repeating (A) and (B); Until (A) is met, the model of the floating offshore wind turbine support structure meets the foundation stability; or The current foundation stability determination condition is the final foundation stability determination condition, and if the parameters of the model of the floating offshore wind turbine support structure do not meet the current foundation stability determination condition, the model of the floating offshore wind turbine support structure does not meet foundation stability.

[0008] According to the stability analysis method of the floating offshore wind turbine support structure in some embodiments of the present application, the foundation stability determination condition includes a first foundation stability determination condition of a first order, and the first foundation stability determination condition is shown in the following formula: Where, Indicates the heel angle caused by steady wind; Indicates the angle at which the deck edge enters the water; Indicates the enclosed area, which is the curve of the restoring arm GZ and the unsteady wind tilting arm The first intersection angle of a curve between two curves , critical restoring force curve angle The area enclosed by the angle range; Indicates the enclosed area, which is the curve of the restoring arm GZ and the unsteady wind tilting arm The first intersection angle of a curve between two curves , windward roll angle The area enclosed by the angular range.

[0009] According to the stability analysis method of the floating offshore wind turbine support structure in some embodiments of the present application, the foundation stability determination condition includes a second foundation stability determination condition of the second order, and the second foundation stability determination condition is shown in the following formula: Where, It represents the short-term stability failure index of the supporting structure of floating offshore wind turbine equipment under all sea conditions; A weighting factor representing short-term environmental conditions; Indicates the total number of short-term environmental conditions; Indicates a specific sea condition Short-term stability failure index of supporting structure of floating offshore wind turbine equipment.

[0010] According to the stability analysis method for a floating offshore wind turbine support structure in some embodiments of the present application, the foundation stability determination condition includes a third foundation stability determination condition of a third order, and the third foundation stability determination condition includes: In a time domain simulation of a certain period of time under the set sea conditions, wind conditions and encounter angle parameters of the time domain model, neither the roll angle nor the pitch angle in the parameters of the model of the floating offshore wind turbine equipment support structure exceeds the capsizing threshold; wherein the time domain model is a model established based on the parameters of the model of the floating offshore wind turbine equipment support structure and environmental conditions.

[0011] According to the stability analysis method of the floating offshore wind turbine support structure in some embodiments of the present application, the acceleration stability judgment specifically includes: (C) If the parameters of the model of the floating offshore wind turbine support structure satisfy the current acceleration stability determination conditions, the model of the floating offshore wind turbine support structure satisfies the acceleration stability, and the acceleration stability determination of the model of the floating offshore wind turbine support structure is terminated; (D) If the parameters of the model of the floating offshore wind turbine support structure do not satisfy the current acceleration stability determination condition, the next acceleration stability determination condition is used as the current acceleration stability determination condition, and steps (C) and (D) are repeated; Until (C) is met, the model of the floating offshore wind turbine support structure satisfies acceleration stability; or The current acceleration stability determination condition is the last acceleration stability determination condition, and if the parameters of the model of the floating offshore wind turbine support structure do not meet the current acceleration stability determination condition, then the model of the floating offshore wind turbine support structure does not meet acceleration stability.

[0012] According to the stability analysis method of the floating offshore wind turbine support structure in some embodiments of the present application, the acceleration stability judgment condition includes a first acceleration stability judgment condition of a first order, and the first acceleration stability judgment condition is shown in the following formula: Where, Indicates the acceleration limit threshold, Indicates the acceleration value calculated directly by the scale.

[0013] According to the stability analysis method of the floating offshore wind turbine support structure in some embodiments of the present application, the acceleration stability judgment condition includes a second acceleration stability judgment condition of the second order, and the second acceleration stability judgment condition is shown in the following formula: Where, Represents the different sea state statistics in the scatter plot; Indicates the weight coefficients for different sea conditions; It represents the probability of short-term failure of acceleration under a certain sea condition; Indicates the acceleration failure probability threshold According to the stability analysis method of the floating offshore wind power equipment support structure in some embodiments of the present application, the acceleration stability judgment condition includes a third acceleration stability judgment condition of the third order, and the third acceleration stability judgment condition includes: in the time domain simulation of the time domain model for a certain period of time under the set sea conditions, wind conditions and encounter angle parameters, any one of the roll angle and pitch angle in the parameters of the model of the floating offshore wind power equipment support structure does not exceed the overturning threshold; wherein, the time domain model is a model established according to the parameters of the model of the floating offshore wind power equipment support structure and environmental conditions.

[0014] In a second aspect, an embodiment of the present application further provides an electronic device, comprising: one or more processors, a memory, and one or more programs; wherein the one or more programs are stored in the memory, and the one or more programs include instructions, which, when executed by the electronic device, enable the electronic device to execute the first aspect and any possible technical solution of the first aspect thereof.

[0015] In a third aspect, an embodiment of the present application further provides a computer-readable storage medium, which includes a computer program. When the computer program runs on an electronic device, the electronic device executes the first aspect and any possible technical solution of the first aspect.

[0016] Beneficial effects: On the first aspect, within the stability framework of the floating offshore wind turbine support structure, the huge mass and position of the large wind turbine cabin at the top of the support structure make it extremely sensitive to the movement of the platform. The inertial force generated by it constitutes a key additional dynamic overturning load, which directly affects the platform's anti-overturning ability. At the same time, the requirements for acceleration tolerance limits for the expensive and sophisticated equipment inside the cabin make controlling acceleration a rigid constraint to ensure the safety of system operation and structural integrity. In addition, the presence of the cabin profoundly changes the dynamic characteristics of the platform, amplifies the risk of resonance, and further highlights the indispensability of acceleration analysis in platform optimization design and sea condition adaptability assessment. Therefore, the present invention includes two analysis dimensions for the stability analysis of the entire floating offshore wind turbine support structure: foundation stability and acceleration stability.

[0017] Based on the first aspect, the basic stability analysis is mainly used to evaluate the satisfaction of the scale, and the acceleration stability analysis is mainly used to evaluate the satisfaction of the configuration in providing damping and out-of-plane motion stiffness. The present invention uses two dimensions to judge, which improves the accuracy of the stability analysis.

[0018] On the second aspect, the present invention sets three levels of judgment conditions in each dimension to perform stability analysis. The technical difficulty of each level of judgment conditions gradually increases, and the index requirements gradually decrease. Each level of judgment conditions will only be applicable when the judgment conditions of the previous level are not met. Only when the judgment conditions of the third level still do not meet the stability requirements, it is considered that the structure does not meet the stability requirements, and the platform scale and configuration need to be redesigned or the operating sea conditions of the platform need to be restricted. By judging in sequence with multi-level evaluation conditions, the technical difficulty gradually increases, and the index requirements gradually decrease, the model that meets the stability requirements can be screened out as soon as possible. In the three judgments with gradually increasing technical difficulty, the number of judged models gradually decreases sharply. The number of models for the third step of time domain modeling analysis is extremely small, which can take into account both accuracy and efficiency.

[0019] Based on the second aspect, for the first foundation stability determination condition, the present invention incorporates the heel angle caused by steady wind, which has a direct impact on power generation efficiency, into the foundation stability assessment index. This is based on reference to the kinematic performance requirements of offshore floating wind turbines, combined with a statistical analysis of the average maximum heel angle from hundreds of capsizing accidents in marine engineering projects, and considering that if the deck of a floating wind turbine floods, the deck openings will cause the entire platform to flood, and the turbine blades will also contact the water. In addition, in the stability assessment, the stability recovery capacity of the floating offshore wind turbine support structure is also crucial when the platform tilts. The area ratio describes the reserve capacity of the restoring force from an energy perspective. From the perspective of energy balance scheduling, it is necessary to ensure that the energy dissipation capacity of the floating offshore wind turbine support structure exceeds the input energy. This invention achieves this objective by ensuring that the area enclosed by the unsteady wind heel arm and the restoring arm curves between the first intersection angle and the critical restoring force curve angle is greater than or equal to the area enclosed by the unsteady wind heel arm and the restoring arm curves between the first intersection angle and the windward roll angle.

[0020] Based on the second aspect, for the second foundation stability determination condition, the present invention considers the roll response of the floating offshore wind turbine support structure under real sea conditions. Based on nonlinear dynamics theory, a simplified parametric motion assessment of the floating offshore wind turbine support structure is performed. The nonlinear roll motion of the floating offshore wind turbine support structure is converted into an equivalent linear system through local linearization, and the roll angle is calculated using frequency domain spectrum analysis. The present invention utilizes random process statistical methods and a Poisson distribution model to predict the capsizing probability. The physical significance of this indicator method lies in quantifying the energy accumulation and dissipation balance of the floating offshore wind turbine support structure under random wind and wave excitation, which can effectively reflect the foundation stability.

[0021] Based on the second aspect, for the first acceleration stability judgment condition, the first acceleration stability judgment condition directly calculates the lateral acceleration. If, under a certain working condition, the swaying acceleration calculated by the floating offshore wind turbine support structure is less than the swaying acceleration limit threshold, then the floating offshore wind turbine support structure is not prone to the failure mode phenomenon under this working condition.

[0022] Based on the second aspect, for the second acceleration stability determination condition, the present invention considers the acceleration response of the floating offshore wind turbine support structure under real sea conditions. Based on nonlinear dynamics theory, a simplified parametric motion assessment of the floating offshore wind turbine support structure is performed. The nonlinear motion of the floating offshore wind turbine support structure is converted into an equivalent linear system through local linearization, and acceleration is calculated using frequency domain spectrum analysis. The present invention utilizes random process statistical methods and a Poisson distribution model to predict capsizing probability. The physical significance of this indicator method is to quantify the risk of loss of stability due to insufficient restoring force caused by the small scale factor of the floating offshore wind turbine support structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a flow chart of the stability assessment method for the supporting structure of the floating offshore wind turbine equipment.

[0024] Figure 2 It is the foundation stability assessment criterion diagram.

[0025] Figure 3 is the wind turbine thrust coefficient estimation curve. DETAILED DESCRIPTION

[0026] The following describes embodiments of the present application in detail with reference to the accompanying drawings, examples of which are shown in the accompanying drawings. The present application provides a method, an electronic device, and a computer storage medium. The method, the electronic device, and the computer storage medium are based on the same technical concept. Since the method, the electronic device, and the computer storage medium solve similar problems, their implementations can be referenced to each other, and any repetitions will not be repeated.

[0027] Figure 1 This is a flow chart of the stability analysis method for the supporting structure of floating offshore wind turbines. Figure 1 As shown, a stability analysis is performed based on environmental conditions and floating wind power platform parameters, wherein the floating wind power platform parameters are also referred to as parameters of a model of a floating offshore wind power equipment support structure.

[0028] Among them, stability analysis includes basic stability analysis and acceleration stability analysis.

[0029] Stability analysis includes three levels of criteria, also referred to as stability judgment conditions in this disclosure. The basic stability judgment conditions include the first, second, and third basic stability judgment conditions, while the acceleration stability judgment conditions include the first, second, and third acceleration stability judgment conditions.

[0030] The foundation stability judgment step includes: judging the foundation stability judgment conditions one by one according to the order of the foundation stability judgment conditions; if the model parameters meet at least one foundation stability judgment condition, the floating offshore wind turbine support structure corresponding to the model parameters meets the foundation stability; otherwise, the foundation stability is not met.

[0031] The acceleration stability judgment step includes: judging each acceleration stability judgment condition one by one according to the order of the acceleration stability judgment conditions; if the model parameter satisfies at least one acceleration stability judgment condition, the floating offshore wind turbine support structure corresponding to the model parameter satisfies the acceleration stability; otherwise, the acceleration stability is not satisfied.

[0032] If any stability criteria, including foundation stability and acceleration stability, are not met, the floating offshore wind turbine support structure corresponding to the model parameters should be restricted to operating sea conditions to ensure its stability. If unacceptable or inoperable, the model parameters should be redesigned to ensure structural stability.

[0033] In the present invention, the stability analysis of the model of the floating offshore wind turbine support structure can be carried out in batches, which can achieve more reliable and efficient screening of the floating offshore wind turbine support structures that meet the stability requirements and determine the floating offshore wind turbine support structures that do not meet the stability requirements.

[0034] S10. In a specific embodiment of the present invention, obtaining parameters and environmental conditions of a model of a floating offshore wind turbine support structure mainly includes the following steps: a. Establish a model of the floating offshore wind turbine support structure. This model is a geometric model, a digital representation of the external shape of the floating offshore wind turbine support structure. It defines the spatial topology of the floating offshore wind turbine support structure, including the three-dimensional geometric parameters representing the lower buoy, columns, and struts; the spatial positioning coordinates and boundaries of non-watertight deck openings; the center coordinates and installation azimuth of the wind turbine; principal dimensions; and mass attribute constraints. Principal dimensions include the model's overall length, overall width, and profile depth; mass attribute constraints include the coordinates of the center of gravity and the mass moment of inertia. Modeling can be performed using existing software such as NAPA, GHS, or MOSE. Hydrostatic analysis can also be performed using existing marine stability analysis software such as NAPA, GHS, or MOSE. Based on the hydrostatic analysis, the projected area A above the waterline, the vertical distance Z from the center calculation point of A to half the draft, and the initial stability height GM of the floating offshore wind turbine support structure are determined.

[0035] b. Divide the internal compartments of the model of the floating offshore wind turbine support structure and perform loading design based on this. According to the loading design, obtain the floating displacement of the floating offshore wind turbine support structure .

[0036] c. Perform traditional stability analysis on the model of the floating offshore wind turbine support structure. This can be achieved using existing marine stability analysis software such as NAPA, GHS, or MOSE. Based on the traditional stability analysis, the GZ curve of the restoring arm under different working conditions and different inclination angles, the deck edge entry angle, and the stability of the floating offshore wind turbine support structure can be obtained. , water inlet angle .

[0037] d. Analysis of the ocean conditions in the sea area where the floating offshore wind turbine support structure operates can be conducted using basic ocean data. If the data is incomplete, calculations can be conducted based on recommendations from similar specifications such as DNV-RP-C205 or proprietary databases. Based on the analysis of the ocean conditions in the operating sea area, the wave spectrum of the operating sea area can be obtained. , weighting factor for short-term environmental conditions .

[0038] S20. In a specific embodiment of the present invention, the foundation stability determination step includes the following steps: S21. Perform a first judgment on the model of the floating offshore wind turbine support structure using the first basic stability judgment condition, as shown in the following formula: Where, Indicates the heel angle caused by steady wind; Indicates the angle at which the deck edge enters the water; Indicates the enclosed area, which is the curve of the restoring arm GZ and the unsteady wind tilting arm The first intersection angle of a curve between two curves , critical restoring force curve angle The area enclosed by the angle range Indicates the enclosed area, which is the curve of the restoring arm GZ and the unsteady wind tilting arm The first intersection angle of a curve between two curves , windward roll angle The area enclosed by the angular range.

[0039] In the design of supporting structures for floating offshore wind turbines, stability not only affects the platform's ability to resist external loads, but also directly affects the efficiency of wind turbine power generation. It has a direct impact on the power generation efficiency, so the heel angle caused by the steady wind Incorporating foundation stability assessment indicators and referring to the requirements for motion performance of offshore floating wind turbines, the maximum heel angle caused by steady wind under operating conditions is determined to be 10°; combined with statistical analysis of the average maximum heel angle of 12-14° in hundreds of capsizing accidents in marine engineering projects, a certain margin is taken into account to limit the heel angle caused by steady wind. Less than 10°. In addition, if the deck of a floating wind turbine is flooded, the opening on the deck will cause the entire platform to be flooded, and the blades of the wind turbine will also touch the water. Therefore, the heel angle generated by the steady wind is set. The deck edge entry angle should also be considered , ensure the heel angle Less than the deck edge entry angle , and taking into account a certain margin, the final heel angle is determined to be Less than or equal to the deck edge water entry angle 0.8× .

[0040] In the stability assessment, when the platform tilts, the stability recovery ability of the floating offshore wind turbine support structure is also very important. The area ratio describes the reserve capacity of the recovery force from the perspective of energy. From the perspective of energy balance scheduling, it is necessary to ensure that the energy consumption capacity of the floating offshore wind turbine support structure is greater than the input energy, that is, the unsteady wind tilt arm At the first intersection angle between the curve and the restoring arm GZ curve and critical restoring force curve angle The area b enclosed by the angles must be greater than or equal to the unsteady wind tilting arm At the first intersection angle between the curve and the restoring arm GZ curve and windward roll angle In addition, according to the International Maritime Organization's statistical analysis of 37 capsizing accidents that have occurred in history, the b / a data in 92% of the accidents was between 0.7 and 1.0. .

[0041] Among them, Figure 2 The foundation stability assessment criteria shown in the figure, the heel angle Expressed as steady wind tilt arm The intersection of the curve and the restoring arm GZ curve.

[0042] Among them, the restoring arm GZ is related to the shape of the supporting structure of the floating offshore wind turbine equipment and is calculated by software such as NAPA or MOSES.

[0043] Among them, the steady wind tilt arm Calculated according to the following formula: Where, represents the steady thrust of the floating wind turbine; Z represents the vertical distance from the central calculation point of A to half the draft; P represents the wind pressure of the steady wind; A represents the projected area above the waterline of the supporting structure of the floating offshore wind turbine equipment, Indicates the displacement of the floating body.

[0044] Among them, the floating wind turbine steady thrust Calculated according to the following formula: Where, Indicates the air density; represents the thrust coefficient, represents the swept area of ​​the rotor; Indicates the 10-minute average wind speed in the far field.

[0045] The thrust coefficient is given by Figure 3 The thrust coefficient of the wind turbine at the tower top height shown is selected.

[0046] The swept area of ​​the rotor is Calculated according to the following formula: Where R represents the fan blade rotor radius.

[0047] Among them, the deck edge entry angle Obtained from the supporting structure model of floating offshore wind turbines.

[0048] Among them, such as Figure 2 As shown, the enclosed area b is the unsteady wind tilting arm At the first intersection angle between the curve and the restoring arm GZ curve and critical restoring force curve angle The area enclosed by the angles. Figure 2 The horizontal axis represents the angle, and the vertical axis represents the restoring arm GZ.

[0049] Among them, the unsteady wind tilt arm Calculated according to the following formula: Among them, the critical restoring force curve angle Calculated according to the following formula: Where, represents the water inlet angle, which is obtained from the supporting structure model of floating offshore wind turbine equipment; Indicates the unsteady wind tilt arm The second intersection angle with the restoring arm GZ curve.

[0050] Among them, such as Figure 2 As shown, the enclosed area a is the unsteady wind tilting arm At the first intersection angle between the curve and the restoring arm GZ curve and windward roll angle The area enclosed by the angles.

[0051] Among them, the windward roll angle It is obtained by solving the following system of equations, which can be calculated with the help of Matlab or other numerical tools: Where, represents the sine of the half-wind angle, represents the corrected roll period, represents the natural roll period.

[0052] S22. Perform a second judgment on the model of the floating offshore wind turbine support structure using the second basic stability judgment condition, as shown in the following formula: Where, It represents the short-term stability failure index of the supporting structure of floating offshore wind turbine equipment under all sea conditions; represents the weight factor of the short-term environmental condition, obtained from the wave scatter diagram; N represents the total number of short-term environmental conditions; C S,i It represents the short-term stability failure index of the supporting structure of floating offshore wind turbine equipment under a specified sea condition i.

[0053] When the simplified calculation of the main parameters determined based on the first basic stability judgment condition does not meet the requirements, the present invention considers the roll response of the floating offshore wind power equipment support structure under real sea conditions. However, for the sake of operability, no full coupling calculation is performed under the second basic stability judgment condition. Instead, a simplified parameter motion evaluation of the floating offshore wind power equipment support structure is performed based on nonlinear dynamics theory. The nonlinear roll motion of the floating offshore wind power equipment support structure is converted into an equivalent linear system through a local linearization method, and the roll angle is calculated using frequency domain spectrum analysis. Using the random process statistical method, the Poisson distribution model is used to predict the capsizing probability, that is, the short-term stability failure index of the floating offshore wind power equipment support structure The physical significance of this indicator method lies in quantifying the balance between energy accumulation and dissipation of the short-term stability failure index of the supporting structure of floating offshore wind turbines under random wind and wave excitation, which can effectively reflect the stability of the foundation. Among them, the threshold value of the short-term stability failure index is based on accident statistics, exposure time model and engineering safety margin. According to the inversion of 37 capsizing accidents that have occurred in history by the International Maritime Organization, it is shown that when the threshold value of the short-term stability failure index is 0.06, it covers 95% of the safety margin.

[0054] Among them, the short-term stability failure index C of the floating offshore wind power equipment support structure is S,i Calculated according to the following formula: Where, It represents the exponential decay rate of short-term stability failure; Indicates the duration, usually 3600s.

[0055] Among them, the decay rate of the short-term stability failure index is measured Calculated according to the following formula: Where, represents the average zero-crossing period of the wave, obtained from the wave scatter diagram; Indicates a positive risk indicator; Indicates a negative risk indicator.

[0056] Among them, positive risk index Calculated according to the following formula: Where, represents the standard deviation of hydrodynamic statistics for roll and pitch motions; It represents the residual stability range corresponding to the virtual limit angle of the equivalent area on the leeward side.

[0057] Among them, the hydrodynamic statistical standard deviation of rolling and pitching motion is Calculated according to the following formula: Where, Represents the zero-order spectral moment of the hydrodynamic forces of roll and pitch motions.

[0058] Among them, the zero-order spectral moment of the hydrodynamic force of roll and pitch motion is Calculated according to the following formula: Where, represents the wave spectrum, obtained from the wave scatter diagram; represents the modified frequency response function after considering aerodynamic coupling; Indicates the wave frequency.

[0059] Among them, the modified frequency response function after considering aerodynamic coupling is Calculated according to the following formula: Where, represents the hydrodynamic frequency response function, which is obtained from the hydrodynamic calculation; Indicates the coupling coefficient, which is 0.25 for semi-submersible type and 0.15 for other types; represents the thrust spectrum density of the floating wind turbine, which is obtained by transforming the wind turbine load spectrum; The wave force spectrum density of the floating offshore wind turbine support structure is obtained by hydrodynamic calculation.

[0060] Among them, the residual stability range corresponding to the virtual limit angle of the equivalent area on the downwind side is Calculated according to the following formula: Where, Indicates the virtual limit angle of equivalent area on the leeward side; It represents the dynamic equilibrium angle, which can be approximately taken as 1.2φ0.

[0061] Among them, the virtual limit angle of equivalent area on the downwind side Calculated according to the following formula: Where, Indicates the heel angle resulting from the steady wind To the leeward stability failure angle The area under the curve of the remaining righting arm within the angle range is Residual stability height, which is the heel angle produced by the residual righting arm curve under steady wind The derivative at ; Among them, the dynamic equilibrium angle generated by the steady wind To the leeward stability failure angle The area under the curve of the remaining righting arm within the angle range , calculated according to the following formula: Where, represents the residual restoring torque curve; Indicates an angle.

[0062] Among them, the downwind stability failure angle Calculated according to the following formula: Where, Indicates the second intersection of the leeward righting arm curve and the wind-tilting arm curve; Indicates the water inlet angle on the leeward side; Indicates degree.

[0063] Among them, negative risk index Calculated according to the following formula: Where, represents the standard deviation of hydrodynamic statistics for roll and pitch motions; Indicates the residual stability range corresponding to the virtual limit angle of the equivalent area on the upwind side.

[0064] Among them, the residual stability range corresponding to the virtual limit angle of the equivalent area on the upwind side is Calculated according to the following formula: Where, represents the dynamic equilibrium angle; represents the stability failure angle from the upwind side To a fixed dynamic balance angle The area under the curve of the remaining righting arm within the angle range; Residual stability height, which is the residual righting arm curve at the dynamic equilibrium angle The derivative at ; Among them, the stability failure angle from the upwind side To dynamic equilibrium angle The area under the curve of the remaining righting arm within the angle range Calculated according to the following formula: Where, represents the residual restoring torque curve; Indicates an angle.

[0065] Among them, the upwind stability failure angle Calculated according to the following formula: Where, Indicates the second intersection point of the upwind righting arm curve and the wind tilting arm curve; Indicates the water inlet angle on the upwind side; Indicates degree.

[0066] S23. Perform a third judgment on the model of the floating offshore wind turbine support structure using the third basic stability judgment condition, in the following steps: This method uses high-precision time-domain numerical simulation to dynamically reproduce the nonlinear motion of floating wind turbine support structures under extreme sea conditions, directly quantifying the capsizing risk. Its simplified operating logic, output results, and stability evaluation mechanism are as follows: (1) Define the calculation model and environmental conditions: The model includes detailed three-dimensional geometry, accurate mass distribution (weight, center of gravity position KG), detailed loading conditions (including free surface correction), and roll damping model. Environmental conditions refer to the actual design sea conditions.

[0067] (2) Establish the six-degree-of-freedom nonlinear motion coupling equation and solve it using a solver (such as NUMECA FINE / Marine, SIMO-RIFLEX, etc.), as shown in the following equation: Where, represents the motion response of the supporting structure of the floating wind turbine; M is the mass matrix; C is the nonlinear damping term; K is the nonlinear restoring force; Fwave is the wave force; Fwind is the wind load; and Fvis is the viscous force.

[0068] (3) Stability evaluation: Under the specified design sea conditions, wind conditions, and encounter angles, conduct a sufficiently long time domain simulation (e.g., 3-6 hours) to statistically analyze the roll and pitch of the floating wind turbine support structure. If no capsizing occurs during the simulation (defined as a roll angle or pitch angle exceeding 90°), the floating wind turbine support structure is considered to meet the third foundation stability criteria under this operating condition.

[0069] S30. In a specific embodiment of the present invention, the acceleration stability determination step comprises the following steps: S31. Perform a first judgment on the model of the floating offshore wind turbine support structure using the first acceleration stability judgment condition, as shown in the following formula: Where, Indicates the acceleration limit threshold, which is 0.3g in operating conditions and 0.6g in self-storage conditions; Indicates the acceleration value calculated directly by the scale.

[0070] Motion acceleration is a key consideration within the stability framework of floating offshore wind turbine support structures. Its central importance stems directly from the large wind turbine nacelle atop the support structure. The nacelle's significant mass and location make it extremely sensitive to platform motion. The inertial forces it generates constitute a critical additional dynamic overturning load, directly impacting the platform's ability to resist overturning (dynamic stability). Furthermore, the acceleration tolerance requirements of the expensive and sophisticated equipment within the nacelle make acceleration control a rigid constraint for ensuring system operational safety and structural integrity. Any equipment or structural failure could potentially lead to a chain reaction that compromises overall stability. Furthermore, the presence of the nacelle profoundly alters the platform's dynamic characteristics, amplifying the risk of resonance and further highlighting the essential importance of acceleration analysis in optimizing platform design and assessing sea-state adaptability. Therefore, accurate prediction, assessment, and control of the platform's acceleration response are fundamental to ensuring adequate stability margins and operational reliability throughout the lifecycle of floating wind turbines.

[0071] The first acceleration stability judgment condition directly calculates the lateral acceleration. If, under a certain working condition, the sway acceleration calculated for the floating offshore wind turbine support structure is Less than the sway acceleration limit threshold , it is considered that the floating offshore wind turbine support structure is not prone to this failure mode under this working condition. Referring to the requirements for motion performance of offshore floating wind turbines, the value is 0.3g under operating conditions and 0.6g under self-storage conditions.

[0072] Acceleration values ​​calculated directly from the scale Calculated according to the following formula: Where, Indicates the roll acceleration value; Indicates the pitch acceleration value; represents the vertical acceleration.

[0073] Among them, the roll acceleration value Calculated according to the following formula: Where g represents the acceleration due to gravity; represents the natural period of roll, which is calculated from the hydrodynamics; express The corresponding roll acceleration value is obtained by hydrodynamic calculation; represents the spectral peak period corresponding to the roll response, obtained from the hydrodynamic calculation; Represents the characteristic amplitude, which is the input condition; represents the correction factor considering the aerodynamic coupling of the supporting structure of the floating offshore wind turbine.

[0074] Among them, the correction factor considering the aerodynamic coupling of the supporting structure of floating offshore wind turbines is Calculated according to the following formula: Where, It represents the coupling coefficient, which is 0.25 for semi-submersible type and 0.15 for other types; represents the steady thrust of the floating wind turbine; represents the displacement, obtained from the hydrostatic part of the platform shell; is the initial stability height, obtained from the hydrostatic part of the platform shell; Indicates the heel angle caused by steady wind.

[0075] Among them, the pitch acceleration value Calculated according to the following formula: Where g represents the acceleration due to gravity; represents the natural period of pitch, which is calculated from the hydrodynamics; express The corresponding pitch acceleration value is obtained by hydrodynamic calculation; represents the spectral peak period corresponding to the pitch response, obtained from the hydrodynamic calculation; Indicates the characteristic amplitude·; It represents the height magnification factor of the tower supporting structure of floating offshore wind turbine equipment.

[0076] Among them, the height magnification factor of the tower supporting structure of floating offshore wind power equipment is Calculated according to the following formula: Where, Indicates the tower height; D indicates the platform draft.

[0077] Among them, the vertical acceleration Calculated according to the following formula: Where, represents the natural period of heave, obtained from hydrodynamic calculations; represents the spectral peak period corresponding to the heave response, obtained from the hydrodynamic calculation; express The corresponding heave acceleration value is obtained from the hydrodynamic calculation; Indicates the characteristic amplitude.

[0078] S32. Perform a second judgment on the model of the floating offshore wind turbine support structure using the second acceleration stability judgment condition, as shown in the following formula: Where, Represents the different sea state statistics in the scatter plot; The weight coefficients representing different sea conditions are obtained from the wave scatter diagram; Indicates a certain sea condition Acceleration short-term failure probability under ; represents the acceleration failure probability threshold, and is taken After the simplified calculation based on the main parameters of the first acceleration stability judgment condition determines that the acceleration is not satisfied, the present invention considers the acceleration response of the floating offshore wind power equipment support structure under real sea conditions. However, for the sake of operability, a full coupling calculation is not performed in the second acceleration stability judgment condition. Instead, a simplified parameter motion evaluation of the floating offshore wind power equipment support structure is performed based on nonlinear dynamics theory. The nonlinear motion of the floating offshore wind power equipment support structure is converted into an equivalent linear system through a local linearization method, and the acceleration of the floating offshore wind power equipment support structure is calculated using frequency domain spectrum analysis. Using random process statistical methods, a Poisson distribution model is used to predict the capsizing probability, that is, the overspeed short-term stability failure index of the floating offshore wind power equipment support structure. The physical significance of this indicator method lies in quantifying the risk of instability loss due to insufficient restoring force in floating offshore wind turbine support structures due to their small size. The threshold for the short-term over-acceleration stability failure index is based on accident statistics, exposure time models, and engineering safety margins. Based on the International Maritime Organization's inversion of 37 historical capsizing accidents, a threshold of 0.0039 for the short-term stability failure index covers a 95% safety margin.

[0079] Among them, the short-term failure probability Calculated according to the following formula: Where, Indicates the acceleration due to gravity of 9.81 m / s 2 ; represents the lateral acceleration variance.

[0080] Among them, the lateral acceleration variance Calculated according to the following formula: Where, Indicates the lower limit of lateral acceleration variance calculation; Indicates the upper limit of lateral acceleration variance calculation; represents the lateral acceleration; Represents the wave spectrum.

[0081] Among them, the lower limit of the lateral acceleration variance calculation is Calculated according to the following formula: Where, represents the natural period of rolling motion, which is calculated from the hydrodynamics.

[0082] Among them, the upper limit of the lateral acceleration variance calculation is Calculated according to the following formula: Where, represents the natural period of rolling motion, which is calculated from the hydrodynamics.

[0083] Among them, the lateral acceleration Calculated according to the following formula: Where, Indicates that the roll influence factors at different positions are considered; represents the roll amplitude, which is calculated from the hydrodynamic force; Indicates the wave frequency; Indicates the height of the tower top from the roll axis.

[0084] Among them, the roll influence factors at different positions are considered Calculated according to the following formula: Where, Indicates the distance from the top of the tower to the tail end; Indicates the total length of the supporting structure of the floating offshore wind turbine.

[0085] S33. Perform a third judgment on the model of the floating offshore wind turbine support structure using the third acceleration stability judgment condition, the steps being as follows: This method uses high-precision time-domain numerical simulation to dynamically reproduce the nonlinear motion of floating wind turbine support structures under extreme sea conditions, directly quantifying the capsizing risk. Its simplified operating logic, output results, and stability evaluation mechanism are as follows: (1) Define the computational model and environmental conditions: The model includes detailed three-dimensional geometry, accurate mass distribution (weight, center of gravity position KG), detailed loading conditions (including free surface correction), and roll damping model. Specify the realistic design sea conditions.

[0086] (2) Establish the six-degree-of-freedom nonlinear motion coupling equation and solve it with the help of a professional solver (such as NUMECA FINE / Marine, SIMO-RIFLEX), as shown in the following equation: Where, represents the motion response of the supporting structure of the floating wind turbine; M is the mass matrix; C is the nonlinear damping term; K is the nonlinear restoring force; Fwave is the wave force; Fwind is the wind load; and Fvis is the viscous force.

[0087] (3) Stability evaluation: Under the specified design sea conditions, wind conditions, and encounter angles, conduct a sufficiently long time domain simulation (e.g., 3-6 hours) to statistically analyze the roll and pitch of the floating wind turbine support structure. If no capsizing occurs during the simulation (defined as a roll angle or pitch angle exceeding 90°), the floating wind turbine support structure is considered to meet the third acceleration stability determination criteria under this operating condition.

[0088] The biggest difference between floating offshore wind turbine support structures and traditional marine structures is that they are supported by a large wind turbine. The heavy weight of the wind turbine and its high location cause the acceleration of the platform's roll, which can seriously affect its stability. Therefore, this paper divides the stability analysis of the entire floating offshore wind turbine support structure into two analytical dimensions: foundation stability and acceleration stability.

[0089] Foundation stability analysis is mainly used to evaluate the satisfaction of scales, that is, the waterplane area and moment of inertia that can be provided by the waterplane structure and span of the floating offshore wind turbine support structure can further provide the required out-of-plane hydrostatic restoring stiffness and restoring moment, thereby ensuring the foundation stability requirements of the platform.

[0090] While floating at sea, the support structure of a floating offshore wind turbine is subject to continuous swaying due to the influence of wind and waves. Every part of the support structure experiences the same angular velocity, but different linear velocities. The nacelle at the top of the tower experiences particularly high angular and linear accelerations. If the wave suddenly changes the roll direction when the platform is experiencing its maximum roll angle, the acceleration will severely affect the platform's stability.

[0091] Acceleration stability analysis is mainly used to evaluate the effect of the configuration of the floating offshore wind turbine support structure in providing damping and out-of-plane motion stiffness, so as to ensure that the floating offshore wind turbine support structure meets the stability requirements in terms of acceleration.

[0092] In each dimension, in the foundation stability analysis and acceleration stability analysis, the present invention takes into account that in the actual application process of engineering projects, both accuracy and efficiency must be considered. Therefore, three levels of judgment conditions are set to conduct stability analysis of the supporting structure of floating offshore wind power equipment. The technical difficulty of each level of judgment conditions gradually increases, and the index requirements gradually decrease. Each level of judgment conditions will only be applicable when the judgment conditions of the previous level are not met. For example, if the first judgment condition is checked to meet the requirements, it is considered that the stability of this dimension meets the requirements and no further verification is required. If the requirements are not met, the second judgment condition is checked. The same rules apply to the third level judgment conditions. Only if the third level judgment conditions still do not meet the stability requirements, it is necessary to redesign the platform scale and configuration or limit the operating sea conditions of the platform.

[0093] Based on the above embodiments, an embodiment of the present application further provides a computer program, which, when executed on a computer, enables the computer to execute the method provided in the above embodiments.

[0094] Based on the above embodiments, an embodiment of the present application further provides a computer storage medium, in which a computer program is stored. When the computer program is executed by a computer, the computer executes the method provided in the above embodiments.

[0095] The storage medium may be any available medium that can be accessed by a computer. By way of example and not limitation, computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer.

[0096] Based on the above embodiments, an embodiment of the present application further provides a chip, which is used to read a computer program stored in a memory to implement the method provided in the above embodiments.

[0097] Based on the above embodiments, an embodiment of the present application provides a computer program product, which implements the methods provided in the above embodiments when the computer program product is run on an electronic device.

[0098] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0099] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0100] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0101] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

[0102] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A method for analyzing the stability of a floating offshore wind turbine support structure, characterized in that: include: According to the parameters of the model of the floating offshore wind turbine support structure and the environmental conditions, using at least two foundation stability determination conditions in a sequence, determining the foundation stability of the floating offshore wind turbine support structure under the environmental conditions corresponding to the model parameters; The foundation stability judgment step includes: judging the foundation stability judgment conditions one by one according to the order of the foundation stability judgment conditions; if the model parameter satisfies at least one foundation stability judgment condition, the floating offshore wind turbine support structure corresponding to the model parameter satisfies the foundation stability; otherwise, the foundation stability is not satisfied; According to the parameters of the model of the floating offshore wind turbine support structure and the environmental conditions, at least two sequential acceleration stability determination conditions are used to determine the acceleration stability of the floating offshore wind turbine support structure under the environmental conditions corresponding to the model parameters; The acceleration stability determination step includes: determining each acceleration stability determination condition one by one according to the order of the acceleration stability determination conditions; if the model parameter satisfies at least one acceleration stability determination condition, then the floating offshore wind turbine support structure corresponding to the model parameter satisfies the acceleration stability; otherwise, the acceleration stability is not satisfied; If the floating offshore wind turbine support structure corresponding to the model parameters does not satisfy at least one of foundation stability and acceleration stability under environmental conditions, then it is determined that the floating offshore wind turbine support structure corresponding to the model parameters does not meet the stability requirements; otherwise, the stability requirements are met; Among them, the model of the floating offshore wind turbine support structure is a geometric model of the floating offshore wind turbine support structure, including the three-dimensional geometric shape parameters characterizing the lower floating body, columns and struts, the spatial positioning coordinates and boundaries of the non-watertight openings on the deck, the center coordinates and installation azimuth of the wind turbine, the main scale quantification and mass attribute constraints.

2. The stability analysis method of the floating offshore wind turbine support structure according to claim 1, characterized in that: in, The foundation stability assessment specifically includes: (A) If the parameters of the model of the floating offshore wind turbine support structure satisfy the current foundation stability determination conditions, the model of the floating offshore wind turbine support structure satisfies foundation stability, and the foundation stability determination of the model of the floating offshore wind turbine support structure is terminated; (B) if the parameters of the model of the floating offshore wind turbine support structure do not satisfy the current foundation stability determination condition, taking the next foundation stability determination condition as the current foundation stability determination condition and repeating (A) and (B); Until (A) is met, the model of the floating offshore wind turbine support structure meets the foundation stability; or The current foundation stability determination condition is the final foundation stability determination condition, and if the parameters of the model of the floating offshore wind turbine support structure do not meet the current foundation stability determination condition, the model of the floating offshore wind turbine support structure does not meet foundation stability.

3. The stability analysis method of the floating offshore wind turbine support structure according to claim 2, characterized in that: The basic stability determination condition includes a first basic stability determination condition of a first order, and the first basic stability determination condition is shown in the following formula: Where, Indicates the heel angle caused by steady wind; Indicates the angle at which the deck edge enters the water; Indicates the enclosed area, which is the curve of the restoring arm GZ and the unsteady wind tilting arm The first intersection angle of a curve between two curves , critical restoring force curve angle The area enclosed by the angle range; Indicates the enclosed area, which is the curve of the restoring arm GZ and the unsteady wind tilting arm The first intersection angle of a curve between two curves , windward roll angle The area enclosed by the angular range.

4. The stability analysis method of the floating offshore wind turbine support structure according to claim 3 is characterized in that: The basic stability determination condition includes a second basic stability determination condition of the second order, and the second basic stability determination condition is shown in the following formula: Where, It represents the short-term stability failure index of the supporting structure of floating offshore wind turbine equipment under all sea conditions; A weighting factor representing short-term environmental conditions; Indicates the total number of short-term environmental conditions; Indicates a specific sea condition Short-term stability failure index of supporting structure of floating offshore wind turbine equipment.

5. The stability analysis method of the floating offshore wind turbine support structure according to claim 4, characterized in that: The basic stability determination condition includes a third basic stability determination condition of a third order, and the third basic stability determination condition includes: In a time domain simulation of a certain period of time under the set sea conditions, wind conditions and encounter angle parameters of the time domain model, neither the roll angle nor the pitch angle in the parameters of the model of the floating offshore wind turbine equipment support structure exceeds the capsizing threshold; wherein the time domain model is a model established based on the parameters of the model of the floating offshore wind turbine equipment support structure and environmental conditions.

6. The stability analysis method of a floating offshore wind turbine support structure according to claim 1, characterized in that: in, Acceleration stability judgment specifically includes: (C) If the parameters of the model of the floating offshore wind turbine support structure satisfy the current acceleration stability determination conditions, the model of the floating offshore wind turbine support structure satisfies the acceleration stability, and the acceleration stability determination of the model of the floating offshore wind turbine support structure is terminated; (D) If the parameters of the model of the floating offshore wind turbine support structure do not satisfy the current acceleration stability determination condition, the next acceleration stability determination condition is used as the current acceleration stability determination condition, and steps (C) and (D) are repeated; Until (C) is met, the model of the floating offshore wind turbine support structure satisfies acceleration stability; or The current acceleration stability determination condition is the last acceleration stability determination condition, and if the parameters of the model of the floating offshore wind turbine support structure do not meet the current acceleration stability determination condition, then the model of the floating offshore wind turbine support structure does not meet acceleration stability.

7. The stability analysis method of the floating offshore wind turbine support structure according to claim 6, characterized in that: The acceleration stability determination condition includes a first acceleration stability determination condition of a first order, and the first acceleration stability determination condition is shown in the following formula: Where, Indicates the acceleration limit threshold, Indicates the acceleration value calculated directly by the scale.

8. The stability analysis method of the floating offshore wind turbine support structure according to claim 7, characterized in that: The acceleration stability determination condition includes a second acceleration stability determination condition of the second order, and the second acceleration stability determination condition is expressed as follows: Where, Represents the different sea state statistics in the scatter plot; Indicates the weight coefficients for different sea conditions; It represents the probability of short-term failure of acceleration under a certain sea condition; Indicates the acceleration failure probability threshold.

9. The stability analysis method of a floating offshore wind turbine support structure according to claim 8, characterized in that: The acceleration stability determination condition includes a third acceleration stability determination condition of a third order, wherein the third acceleration stability determination condition includes: in a time domain simulation of a certain period of time under the set sea conditions, wind conditions and encounter angle parameters of the time domain model, neither the roll angle nor the pitch angle in the parameters of the model of the floating offshore wind turbine equipment support structure exceeds the capsizing threshold; wherein the time domain model is a model established based on the parameters of the model of the floating offshore wind turbine equipment support structure and environmental conditions.

10. An electronic device, comprising: One or more processors, a memory, and one or more programs; wherein the one or more programs are stored in the memory, and the one or more programs include instructions that, when executed by the electronic device, cause the electronic device to perform any of the methods described in claims 1-9.

11. A computer-readable storage medium comprising a computer program, wherein when the computer program is run on an electronic device, the electronic device is caused to execute the method according to any one of claims 1 to 9.

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