A design method and product of a floating wind power active-passive coordinated ballast stabilization system

Abstract

The application relates to the technical field of offshore wind power analysis and design, and discloses a design method and product of a floating wind power active-passive coordinated ballast stabilization system, which comprises the following steps: obtaining an environmental condition parameter set and a wind turbine capacity parameter set of a target sea area, determining an initial main dimension parameter set of a semi-submersible platform, further determining initial layout parameters of an active ballast tank and a tuned liquid column damper, using the environmental condition parameter set and inherent period requirements of heave, pitch and roll to review the initial main dimension parameter set of the semi-submersible platform, combining the initial main dimension parameter set of the semi-submersible platform that passes the review, and sequentially performing complete stability review, motion performance review and main structural component section modulus review, and when all the reviews pass, using the parameters that pass the review to perform system optimization design, so that the target floating wind power active-passive coordinated ballast stabilization system is obtained, the overall adaptability and operation stability of the floating wind power platform are improved, and the design repetition cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of offshore wind power analysis and design technology, specifically to a design method and product for a floating wind power active-passive coordinated ballast roll reduction system. Background Technology

[0002] Currently, in optimizing the motion performance of floating wind turbines, a dynamic ballast system that can adjust the ballast water in the ballast chamber in real time is often used. This system adjusts the ballast water volume in the floating chamber according to changes in environmental loads and working conditions, adjusting the draft and floating state of the floating foundation. In addition, a tuned liquid column damper commonly used in the marine engineering field is also used. Through the built-in connected oscillating tuned liquid column, a passive form of damping that suppresses the motion of the floating body is provided near the natural frequency of the floating body's motion.

[0003] Based on the above two technical principles, various dynamic ballast water regulation systems and control methods for floating wind turbines have been proposed, including multi-connected water tank ballast water regulation, air-water dual-medium linkage ballast water regulation with external connection, and linkage control methods for ballast water and blade pitch control based on the real-time tilt and rolling states of the floating body. As for passive roll reduction technology, technologies such as grid-shaped tuning liquid column, serpentine pipe tuning liquid column, and joint tuning and frequency conversion with multiple systems (frequency monitoring and adaptive ballast water regulation, oscillating air chamber self-rectifying turbine, variable mass system, adjustable direction components, etc.) have been proposed.

[0004] Existing dynamic ballast systems and tuned liquid column dampers for floating wind turbines / floating platforms can provide targeted technical solutions for specific floating body types and scenarios. For example, they can provide real-time load adjustment for the tilting state of the floating body under real-time monitoring; propose novel foundation forms and tuned liquid column structures for specific floating wind turbines; and propose control strategies that combine dynamic ballast and blade pitch control, as well as solutions that combine dynamic ballast and oscillating tuned liquid columns, to address the power generation stability of wind turbines and the stability and safety of the floating body.

[0005] However, the aforementioned technologies lack two key aspects: first, they fail to provide a feasibility analysis for application in floating wind power systems, neglecting to specify applicable scenarios and conditions, such as actual operating environments; second, they fail to analyze the impact on the stability, overall motion, and structural performance of floating wind power systems, and do not propose practical benefits. Therefore, while these technologies can offer solutions and approaches to specific issues such as motion attitude adjustment and motion suppression, they still lack a systematic approach. Summary of the Invention

[0006] This invention provides a design method and product for a floating wind power active-passive coordinated ballast sway reduction system, which addresses the problem that while existing technologies can offer solutions and approaches for specific issues such as motion attitude adjustment and motion suppression, they still lack a systematic approach.

[0007] In a first aspect, the present invention provides a design method for a floating wind power active-passive coordinated ballast sway reduction system, the method comprising: Obtain the environmental condition parameter set and wind turbine capacity parameter set for the target sea area; based on the environmental condition parameter set, determine the initial principal dimension parameter set of the semi-submersible platform for the initial floating wind power active-passive coordinated ballast roll reduction system, which includes an active ballast system and a tuned liquid column damping system; based on the initial principal dimension parameter set of the semi-submersible platform, determine the first initial layout parameter set for multiple active ballast tanks in the active ballast system and the second initial layout parameter set for multiple passive tuned liquid column dampers in the tuned liquid column damping system; using the environmental condition parameter set and the inherent period requirements for heave and roll, verify the initial principal dimension parameter set of the semi-submersible platform to obtain the verified original principal dimensions of the semi-submersible platform. Parameter set: Using the original master-scale parameter set of the semi-submersible platform, the wind turbine capacity parameter set, the first initial layout parameter set, and the second initial layout parameter set, the initial floating wind power active-passive coordinated ballast roll reduction system is sequentially subjected to complete stability verification, motion performance verification, and main structural component section modulus verification. When the complete stability verification, motion performance verification, and main structural component section modulus verification are all passed, the initial floating wind power active-passive coordinated ballast roll reduction system is optimized based on the verified target master-scale parameter set of the semi-submersible platform, the first target layout parameter set of multiple active ballast chambers, and the second target layout parameter set of multiple passive tuned liquid column dampers, to obtain the target floating wind power active-passive coordinated ballast roll reduction system.

[0008] The design method for a floating wind power active-passive coordinated ballast anti-roll system provided by this invention clarifies the design boundaries and external load conditions by acquiring the target marine environment and wind turbine parameter set, providing a basic input basis for subsequent design and verification. Furthermore, by determining the initial principal dimension parameter set of the semi-submersible platform, the basic structural framework of the floating wind power platform is constructed, which helps to match the on-site application conditions. Furthermore, by determining the initial layout parameters of the active ballast tank and tuned liquid column damper, the initial layout of active and passive anti-roll components is achieved, realizing the integrated configuration of the two types of anti-roll systems. Furthermore, by verifying the initial principal dimension parameters of the platform, the inherent motion period of the floating body can be ensured to meet design requirements, avoiding resonance risks from the source. Furthermore, by sequentially conducting checks on complete stability, motion performance, and structural profile modulus, the three core performance characteristics of the platform—stability, anti-roll capability, and structural strength—can be verified layer by layer, helping to control the overall operational safety and reliability. Furthermore, after all multiple checks are passed, the system optimization design is carried out using the verified parameters, resulting in a finished system that adapts to the operating conditions and meets the performance standards, realizing the design objectives. Therefore, by implementing this invention, by integrating the active ballast and passive liquid column anti-sway systems, and establishing a systematic iterative design process, the stability, motion performance and structural strength of the floating body can be coordinated, thereby improving the overall adaptability and operational stability of the floating wind power platform and reducing the cost of repeated design iterations.

[0009] In one alternative implementation, the initial principal scale parameter set of the semi-submersible platform for the initial floating wind power active-passive coordinated ballast sway reduction system is determined based on the environmental condition parameter set, including: Based on the environmental condition parameter set, determine the direction and magnitude of the main environmental loads; based on the environmental condition parameter set and motion performance requirements, determine the initial principal dimension parameter set of the semi-submersible platform.

[0010] The design method for a floating wind power active-passive coordinated ballast sway reduction system provided by this invention can accurately quantify the influence range and intensity of external loads by determining the direction and magnitude of environmental loads, thereby ensuring that the main dimension design conforms to the actual stress state. Furthermore, by combining environmental condition parameter sets and motion performance requirements to determine the initial main dimensions of the platform, the platform foundation dimensions are adapted to both environmental conditions and motion indicators, balancing practicality and performance requirements. Therefore, by implementing this invention, the design basis for the platform's main dimensions is refined, ensuring that the initial structural parameters match the on-site loads and motion requirements, and improving the rationality of the initial design.

[0011] In one optional implementation, the initial principal scale parameter set of the semi-submersible platform is reviewed using the environmental condition parameter set and the inherent period requirements of heave and roll, resulting in a reviewed and approved original principal scale parameter set for the semi-submersible platform, including: Based on the environmental condition parameter set and the initial principal scale parameter set of the semi-submersible platform, the waterline area of ​​the platform is calculated using the heave natural period relationship. The column diameter is then verified using the platform's waterline area. Once the verified column diameter passes verification, the hydrostatic motion inertial parameter set of the floating body is obtained through numerical model processing based on the initial principal scale parameter set. The roll natural period is calculated using the initial stability height relationship and the roll natural period relationship. If the roll natural period is less than or equal to a preset threshold, the initial principal scale parameter set of the semi-submersible platform is adjusted, and the adjusted initial principal scale parameter set is verified until it passes verification, resulting in the verified original principal scale parameter set of the semi-submersible platform. If the roll natural period is greater than a preset threshold, the initial principal scale parameter set of the semi-submersible platform is determined as the original principal scale parameter set of the semi-submersible platform.

[0012] The design method for a floating wind power active-passive coordinated ballast roll reduction system provided by this invention calculates the platform's waterline area and uses periodic indicators to reverse-check the platform's water-passing cross-sectional parameters, thus constraining the column foundation dimensions. Furthermore, by verifying the column diameter, it ensures that the column dimensions meet the heave period design standards, preventing excessive heave motion. Further, by extracting the set of hydrostatic motion inertial parameters of the floating body and calculating the natural roll period, it is possible to assess whether the platform's roll motion characteristics meet operational specifications. Further, by iteratively adjusting the principal dimensional parameters and correcting unqualified dimensional parameters until the floating body's roll performance meets the standards, the problem of excessive roll is avoided. Furthermore, by determining a qualified set of original principal dimensional parameters, the platform foundation dimensions that meet the periodic requirements are locked, helping to solidify the foundation for motion performance. Therefore, by implementing this invention, through layered verification of the natural period and parameter iteration, the heave and roll motion characteristics of the floating body can be strictly controlled, thereby effectively avoiding resonance and large-scale swaying problems and ensuring the stability of the platform's motion state.

[0013] In one optional implementation, using the original master-scale parameter set of the semi-submersible platform, the wind turbine capacity parameter set, the first initial layout parameter set, and the second initial layout parameter set, the initial floating wind power active-passive coordinated ballast roll reduction system is sequentially subjected to complete stability verification, motion performance verification, and main structural component section modulus verification, including: Based on the wind turbine capacity parameter set, the first initial layout parameter set, and the second initial layout parameter set, a complete stability check is performed on the initial floating wind turbine active-passive coordinated ballast anti-roll system. Once the complete stability check passes, the main cross-sectional positions of the floating structure are determined based on the extreme operating condition loads of the wind turbine and the directions of the main wave loads. Frequency domain hydrodynamic analysis and calculations are performed on the floating body using an underwater structure outer surface mesh model, yielding the frequency domain hydrodynamic calculation results. Using the main cross-sectional positions of the floating structure, the water pressure distribution on the structural surface mesh from the frequency domain hydrodynamic calculation results is then analyzed along the ship. Integrating along the longitudinal direction to the cross-section yields the main structural cross-sectional loads. Based on the frequency domain hydrodynamic calculation results of the floating body, the original principal dimension parameter set of the semi-submersible platform, and the second initial layout parameter set, the integrated numerical model of the target is used to determine whether multiple tuned liquid column dampers in the initial floating wind power active-passive coordinated ballast anti-sway system meet the anti-sway requirements. When multiple tuned liquid column dampers meet the anti-sway requirements, the cross-sectional modulus of the main structural components of the initial floating wind power active-passive coordinated ballast anti-sway system is checked using the main structural cross-sectional loads and the original principal dimension parameter set of the semi-submersible platform.

[0014] The design method for a floating wind power active-passive coordinated ballast anti-rolling system provided by this invention, through comprehensive stability verification, can verify the overturning resistance of the floating body after incorporating active and passive anti-rolling components, ensuring the static stability and safety of the platform. Furthermore, by selecting the main cross-sectional locations of the floating body structure, key stress areas can be identified, facilitating targeted subsequent load and strength analysis. Furthermore, by conducting frequency domain hydrodynamic analysis of the floating body and obtaining data such as hydrodynamic response and pressure distribution, it helps support load calculation and performance evaluation. Furthermore, by calculating the load on the main structural cross-sections through integration, the actual stress values ​​of key sections can be accurately obtained, providing a load basis for structural strength verification. Furthermore, by verifying the anti-rolling effect through an integrated model, it is possible to determine whether the tuned liquid column damper can achieve the expected anti-rolling effect, thereby verifying the effectiveness of the passive anti-rolling system. Furthermore, by verifying the cross-sectional modulus of structural components, the strength of key structural sections can be checked, and structural failure under load can be avoided. Therefore, by implementing this invention, the stability, hydrodynamics, anti-roll performance, and structural strength were fully verified according to the process, and potential operational hazards of the system were comprehensively investigated, ensuring the safe and effective operation of the active and passive coordinated anti-roll system under complex working conditions.

[0015] In one optional implementation, a complete stability check is performed on the initial floating wind power active-passive coordinated ballast sway reduction system based on the wind turbine capacity parameter set, the first initial layout parameter set, and the second initial layout parameter set, including: Based on the first and second initial layout parameter sets, calculate the floating body equilibrium state parameter set containing multiple active ballast tanks and multiple tuned liquid column dampers; based on the wind turbine capacity parameter set, calculate the tilt angle generated by the maximum turbine wind tilting moment and determine the maximum tilt angle of the active ballast system; using the maximum tilt angle as the target, calculate the operating condition parameter set of the active ballast system at the maximum tilt angle using the first initial layout parameter set and the floating body equilibrium state parameter set; based on the operating condition parameter set, calculate the maximum restoring arm value of the floating body and construct a static stability curve; using the static stability curve, perform a complete stability check on the initial floating wind power active-passive coordinated ballast roll reduction system; when the initial floating wind power active-passive coordinated ballast roll reduction system meets the preset complete stability performance requirements, the complete stability check of the initial floating wind power active-passive coordinated ballast roll reduction system is deemed passed.

[0016] The design method for a floating wind power active-passive coordinated ballast anti-roll system provided by this invention clarifies the mechanical state of the floating body foundation after installing anti-roll components by calculating the floating body's equilibrium state parameter set. Furthermore, by calculating the wind tilt angle and the system's maximum tilt angle, the maximum tilt amplitude of the floating body caused by wind force and active ballast is quantified, and the tilt limit is defined. Furthermore, calculating the operating condition parameter set at the maximum tilt angle helps simulate extreme operating conditions. Furthermore, by calculating the recovery arm and constructing a static stability curve, the overturning resistance recovery capability of the floating body can be intuitively reflected, quantifying the stability level. Furthermore, stability verification through the static stability curve can determine whether the platform meets safety standards under extreme tilting conditions. Furthermore, by confirming the stability verification results, qualified / unqualified operating conditions can be distinguished, thereby controlling the platform's anti-overturning safety baseline. Therefore, by implementing this invention, through complete simulation of extreme tilting conditions, the complete stability of the floating body after configuring active-passive anti-roll components is accurately evaluated, effectively preventing the risk of platform overturning under the combined effects of wind and waves.

[0017] In one optional implementation, based on the frequency domain hydrodynamic calculation results of the floating body, the original principal dimension parameter set of the semi-submersible platform, and the second initial layout parameter set, the target integrated numerical model is used to determine whether multiple tuned liquid column dampers in the initial floating wind power active-passive coordinated ballast anti-roll system meet the anti-roll requirements, including: Based on the frequency domain hydrodynamic calculation results of the floating body, the original principal scale parameter set and the second initial layout parameter set of the semi-submersible platform, the free decay simulation of the integrated model under still water conditions was carried out using the target integrated numerical model, and the free decay simulation results were obtained. Based on the frequency domain hydrodynamic calculation results of the floating body, the time domain dynamic motion performance analysis of the integrated model under random wave conditions was carried out using the target integrated numerical model, and the time domain dynamic motion performance analysis results were obtained. When both the free decay simulation results and the time domain dynamic motion performance analysis results meet the corresponding requirements, it is determined that the multiple tuned liquid column dampers in the initial floating wind power active and passive coordinated ballast anti-roll system meet the anti-roll requirements.

[0018] The design method for a floating wind turbine active-passive coordinated ballast roll reduction system provided by this invention utilizes an integrated numerical model to conduct free decay simulation under still water conditions, enabling the measurement of the inherent sway period of the floating body. This provides a reference for frequency matching of the liquid column damper. Furthermore, by conducting time-domain dynamic motion performance analysis of the integrated model under random wave conditions, the dynamic motion state of the platform under real marine conditions can be simulated, and the actual roll reduction performance can be verified. Moreover, by comprehensively evaluating the roll reduction effect through the combined results of the two simulations, the roll reduction capability of the tuned liquid column under different conditions is fully verified, ensuring that the motion indicators meet the standards under all conditions. Therefore, by implementing this invention, combining motion simulation under still water and real wave conditions, and verifying the roll reduction efficiency of the passively tuned liquid column in multiple scenarios, the roll amplitude of the platform is controlled under various sea conditions, improving the operational stability of the unit.

[0019] In one optional implementation, when multiple tuned liquid column dampers meet the sway reduction requirements, the main structural component section modulus of the initial floating wind power active-passive coordinated ballast sway reduction system is checked using the main structural section loads and the original master dimension parameter set of the semi-submersible platform, including: When multiple tuned liquid column dampers meet the sway reduction requirements, the theoretical section modulus of the required cross-section of the floating structure is determined based on the main structural section load and the minimum yield strength of the structural components; the moment of inertia contribution value of each component in the main section of the floating structure is calculated, and the actual effective section modulus is determined; when the actual effective section modulus is greater than the theoretical section modulus and the actual effective section modulus is greater than the specified minimum section modulus, the section modulus of the main structural components of the initial floating wind power active and passive coordinated ballast sway reduction system is verified and approved.

[0020] The design method for a floating wind power active-passive coordinated ballast roll reduction system provided by this invention, by combining actual loads and material properties, can derive the minimum strength standard required for the structural cross-section. Furthermore, by calculating the moment of inertia of the components and the actual effective section modulus, the weakening effect of ballast tanks and liquid columns on the structural cross-section is considered, thus restoring the true structural load-bearing capacity. Furthermore, by comparing the actual structural strength with theoretical values ​​and the minimum values ​​specified in the code, it can be determined whether the structure meets the strength requirements. Therefore, by implementing this invention, the structural cross-section losses caused by the tanks and liquid columns are taken into account, the actual load-bearing capacity of key components is accurately verified, ensuring that the platform structure does not fail under long-term loads and extending the service life of the equipment.

[0021] In one optional implementation, the method further includes: If the overall stability check fails, adjust the original master scale parameter set and the first initial layout parameter set of the semi-submersible platform respectively, and use the adjusted original master scale parameter set and the first initial layout parameter set of the semi-submersible platform to perform an overall stability check on the initial floating wind power active-passive coordinated ballast anti-sway system; if multiple tuned liquid column dampers do not meet the anti-sway requirements, adjust the original master scale parameter set and the second initial layout parameter set of the semi-submersible platform respectively, and use the adjusted original master scale parameter set and the second initial layout parameter set of the semi-submersible platform to determine whether the multiple tuned liquid column dampers meet the anti-sway requirements; if the profile modulus check of the main structural components fails, adjust the original master scale parameter set of the semi-submersible platform, and use the adjusted original master scale parameter set of the semi-submersible platform to perform a profile modulus check on the main structural components of the initial floating wind power active-passive coordinated ballast anti-sway system.

[0022] The design method for a floating wind power active-passive coordinated ballast roll reduction system provided by this invention can specifically optimize structural dimensions and active ballast layout by adjusting the main dimensions and ballast tank parameters when the overall stability check fails, thereby improving the stability of the floating body. Furthermore, when the roll reduction effect is insufficient, the platform dimensions and damper structural parameters are corrected by adjusting the main dimensions and liquid column parameters, restoring the roll reduction performance. Moreover, when the structural strength is insufficient, the main dimensions are adjusted to optimize the platform foundation dimensions, improving the overall structural load-bearing capacity. Therefore, by implementing this invention and formulating corresponding adjustment schemes for different check failures, a closed-loop iterative optimization mechanism is formed, which can gradually correct design defects and ultimately ensure that all system performance meets design and specification requirements.

[0023] Secondly, the present invention provides a design device for a floating wind power active-passive coordinated ballast sway reduction system, the device comprising: The system comprises the following modules: an acquisition module for acquiring environmental condition parameter sets and wind turbine capacity parameter sets for the target sea area; a first determination module for determining the initial principal scale parameter set of the semi-submersible platform for the initial floating wind power active-passive coordinated ballast roll reduction system based on the environmental condition parameter set, wherein the initial floating wind power active-passive coordinated ballast roll reduction system includes an active ballast system and a tuned liquid column damping system; a second determination module for determining the first initial layout parameter set of multiple active ballast tanks in the active ballast system and the second initial layout parameter set of multiple passive tuned liquid column dampers in the tuned liquid column damping system based on the initial principal scale parameter set of the semi-submersible platform; and a verification module for verifying the initial principal scale parameter set of the semi-submersible platform using the environmental condition parameter set and the inherent period requirements of heave and roll, thereby obtaining a semi-submersible platform that has passed the verification. The system comprises: a semi-submersible platform original master-scale parameter set; a verification module, which uses the original master-scale parameter set of the semi-submersible platform, the wind turbine capacity parameter set, the first initial layout parameter set, and the second initial layout parameter set to sequentially perform complete stability verification, motion performance verification, and main structural component section modulus verification on the initial floating wind power active-passive coordinated ballast roll reduction system; and an optimization design module, which, when the complete stability verification, motion performance verification, and main structural component section modulus verification have all passed, optimizes the initial floating wind power active-passive coordinated ballast roll reduction system based on the verified target master-scale parameter set of the semi-submersible platform, the first target layout parameter set of multiple active ballast chambers, and the second target layout parameter set of multiple passively tuned liquid column dampers, to obtain the target floating wind power active-passive coordinated ballast roll reduction system.

[0024] Thirdly, the present invention provides a computer program product, including computer instructions, which are used to cause a computer to execute the design method of a floating wind power active-passive coordinated ballast sway reduction system described in the first aspect or any corresponding embodiment above. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of an application scenario according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the first process of the design method for a floating wind power active-passive coordinated ballast sway reduction system according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the active ballast tank arrangement of a three-pillar semi-submersible platform according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the overall arrangement of the active ballast tank and tuned liquid column damper of a semi-submersible platform according to an embodiment of the present invention. Figure 5 This is a schematic diagram of the structural dimensions of a tuned liquid column damper according to an embodiment of the present invention; Figure 6 This is a schematic diagram showing the selection of the main cross-sectional positions of the floating structure according to an embodiment of the present invention; Figure 7 This is a second flowchart illustrating the design method of a floating wind power active-passive coordinated ballast sway reduction system according to an embodiment of the present invention; Figure 8 This is a structural block diagram of a floating wind power active-passive coordinated ballast sway reduction system design device according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the hardware structure of an electronic device according to an embodiment of the present invention. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] It is understood that before using the technical solutions disclosed in the various embodiments of the present invention, users should be informed of the types, scope of use, and usage scenarios of the personal information involved in the present invention and their authorization should be obtained in accordance with relevant laws and regulations through appropriate means.

[0029] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] As an optional application scenario of this invention, the specific application environment architecture or specific hardware architecture on which the design method for a floating wind power active-passive coordinated ballast sway reduction system depends is described here. For example... Figure 1 As shown, the architecture system may include at least one terminal device and at least one server. Figure 1The system is illustrated in the example, which includes a computer 101, a mobile terminal 102, and a server 103, and the terminal devices such as the computer 101 and the mobile terminal 102 are connected to the server 103 through a network 110.

[0031] Specifically, the terminal device can be a smartphone, tablet, laptop, PDA, desktop computer, game console, smart TV, smart wearable device, in-vehicle terminal, VR (Virtual Reality) device, AR (Augmented Reality) device, etc. Server 103 can be a standalone physical server, a server cluster, a distributed system, or a cloud server providing cloud services. Network 110 can be a wired or wireless network, examples of which include, but are not limited to, the Internet, corporate intranet, local area network, wide area network, mobile communication network, and combinations thereof.

[0032] For example, this invention provides a design method for a floating wind power active and passive coordinated ballast anti-sway system. By integrating active ballast and passive liquid column anti-sway systems and establishing a systematic iterative design process, it can coordinate the stability, motion performance and structural strength of the floating body, improve the overall adaptability and operational stability of the floating wind power platform, and reduce the cost of repeated design.

[0033] According to an embodiment of the present invention, a design method for a floating wind power active-passive coordinated ballast sway reduction system is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0034] This embodiment provides a design method for a floating wind power active-passive coordinated ballast sway reduction system, which can be used in the aforementioned mobile terminals, such as mobile phones and tablets. Figure 2 This is a flowchart of a design method for a floating wind power active-passive coordinated ballast sway reduction system according to an embodiment of the present invention, such as... Figure 2 As shown, the process includes the following steps: Step S201: Obtain the set of environmental condition parameters and the set of wind turbine capacity parameters for the target sea area.

[0035] In one optional embodiment, the target sea area refers to the actual offshore operation area where the floating wind power platform to be designed is deployed and installed; it is the application field corresponding to the entire design scheme. Furthermore, in this embodiment, all parameter values ​​and performance verifications are based on the actual sea conditions of this sea area.

[0036] Furthermore, the environmental condition parameter set represents the sum of various technical parameters of the marine and meteorological environment of the target sea area, which may include sea depth, wave height, wave period, seawater current speed, and ambient wind speed.

[0037] Furthermore, the wind turbine capacity parameter set represents the set of technical parameters of the wind turbine body that is matched with the floating wind power platform, which may include turbine installed capacity, ultimate combined bending moment at the bottom of the tower, ultimate combined shear force at the bottom of the tower, and other unit load parameters.

[0038] In one alternative embodiment, by comprehensively collecting environmental data of the target sea area and the parameters of the supporting wind turbine, the design boundaries, external load conditions and unit operating requirements can be clearly defined.

[0039] For example, basic environmental data of the target sea area can be collected through field surveys, data collection, or marine monitoring, and basic parameters such as water depth, wave height, wave period, ocean current velocity, and ambient wind speed can be obtained.

[0040] Furthermore, relevant parameters of the corresponding wind turbine units, such as installed capacity and ultimate load, can be extracted from the wind turbine equipment data to form a set of wind turbine unit capacity parameters.

[0041] Step S202: Determine the initial master scale parameter set of the semi-submersible platform for the initial floating wind power active-passive coordinated ballast sway reduction system based on the environmental condition parameter set.

[0042] In one optional embodiment, the initial floating wind power active-passive coordinated ballast anti-roll system refers to the integrated floating wind power supporting system built in the early design stage, using a semi-submersible platform as a carrier, and simultaneously equipped with an active ballast system and a tuned liquid column damping system. Furthermore, this system achieves floating body attitude adjustment and roll suppression by relying on the synergistic action of these two types of devices.

[0043] Furthermore, the active ballast system is an active attitude control device. By adjusting the ballast water capacity of the ballast tanks inside the platform pillars in real time, it dynamically adjusts the draft, buoyancy, and center of gravity distribution of the float, thereby offsetting the platform tilt caused by wind and wave loads and achieving active load adjustment and tilt adjustment.

[0044] Furthermore, the tuned liquid column damping system is a passive roll reduction device, consisting of multiple interconnected tuned liquid column dampers. Moreover, this tuned liquid column damping system utilizes the oscillation of the liquid column itself to generate damping force. By matching the frequency of the floating body's motion, it can dissipate the platform's swaying energy, thereby suppressing the floating body's pitching and rolling motions.

[0045] Furthermore, the initial master dimensional parameter set of the semi-submersible platform represents the sum of the geometric and performance parameters of the semi-submersible floating body foundation structure initially proposed during the design phase, and may include the column diameter. Column height Column spacing Discharge drinking water wait.

[0046] In one optional embodiment, the main dimensions of the floating semi-submersible platform, such as its external dimensions, displacement, and draft, directly determine the floating body's stress characteristics, hydrodynamic response, inherent motion characteristics, and load-bearing capacity. Meanwhile, environmental parameters such as water depth, waves, wind speed, and current velocity in the target sea area define the external load boundaries and spatial constraints for platform operation. Therefore, it is essential to reverse-engineer the platform's main dimensions according to the environmental conditions to ensure the floating body is adaptable to the marine environment from the outset, while also meeting the installation and operating conditions of subsequent active and passive ballast anti-roll systems.

[0047] In this embodiment, the target sea area environmental load, spatial conditions, and wave frequency characteristics are used as external constraints, while the hydrodynamic characteristics, inherent motion laws, and static stability of the floating body are used as internal mechanical basis. At the same time, the installation and operation requirements of two types of anti-roll devices, active ballast and tuned liquid column, are taken into account. By reverse deduction through environmental conditions, the main dimensions of the platform structure can be initially determined, and the initial adaptation of external conditions, floating body structure, and anti-roll system is achieved.

[0048] Step S203: Based on the initial master dimension parameter set of the semi-submersible platform, determine the first initial layout parameter set of multiple active ballast tanks in the active ballast system and the second initial layout parameter set of multiple passively tuned liquid column dampers in the tuned liquid column damping system.

[0049] In one optional embodiment, the active ballast tank is a water storage tank arranged inside the column of the semi-submersible platform. It can change the overall center of gravity and buoyancy of the platform by adjusting the mass and distribution of ballast water in the tank, actively counteract the tilt of the platform caused by wind and waves, and achieve attitude correction.

[0050] Furthermore, the first initial layout parameter set represents the sum of initial geometric and positional parameters determined for multiple active ballast tanks, which may include the spatial coordinates, installation position, tank volume, and arrangement of each ballast tank, and is used to define the layout scheme of the ballast tanks on the platform.

[0051] Furthermore, the passively tuned liquid column damper is a passive roll reduction component, generally employing a continuous liquid column structure. It relies on the internal liquid to oscillate as the platform rocks, generating damping force to dissipate kinetic energy. Moreover, by matching the natural frequency of the float, it can suppress roll and pitch, reducing the platform's oscillation amplitude.

[0052] Furthermore, the second initial layout parameter set represents the sum of initial structure and layout parameters determined for multiple passively tuned liquid column dampers. It may include liquid column installation position, vertical / horizontal section cross-sectional area, liquid column height, liquid column length, overall arrangement, etc., which are used to determine the structural form and installation position of the damper.

[0053] In one alternative embodiment, by utilizing the determined main dimensions of the semi-submersible platform and combining the platform's structural space, stress characteristics, and anti-roll function requirements, it is possible to achieve preliminary position planning and structural parameter setting for the active ballast tank and the tuned liquid column damper, and complete the integrated layout design of the active and passive anti-roll devices.

[0054] For example, firstly, considering the dimensions of the semi-submersible platform's columns and its overall spatial structure, the installation areas for the active ballast tanks are selected. For instance, they can be placed on the upper part of each column. Then, the three-dimensional coordinate position of each ballast tank is determined sequentially, forming a ballast tank location layout.

[0055] Secondly, based on the internal space of the pillars and the load adjustment capacity requirements, the shape, volume and other parameters of each active ballast tank can be determined, and then summarized to form the corresponding first initial layout parameter set.

[0056] Finally, by utilizing the overall platform structure and the requirements for sway suppression, the installation positions of multiple sets of tuned liquid column dampers can be planned, and they can be arranged in a connected U-shaped liquid column configuration. Furthermore, by combining the platform dimensions and the preset sway reduction target, the structural parameters of the dampers, such as the vertical liquid column cross-sectional area, vertical height, horizontal liquid column cross-sectional area, and horizontal length, can be determined, and these parameters can be aggregated to form a corresponding second initial layout parameter set.

[0057] Furthermore, it is also possible to verify whether there is spatial interference between the layout of the two types of devices and the main structure of the platform, in order to confirm whether the layout scheme is reasonable.

[0058] In one embodiment, the active ballast tanks are located on the upper part of three pillars, such as... Figure 3 As shown, these are ballast tanks. Ballast tanks and ballast tanks The passively tuned liquid column damper consists of three interconnected U-shaped liquid columns, such as... Figure 4 As shown, these are liquid columns. liquid column and liquid column .further, Figure 4 In the middle, A refers to the position of the cross section; the view from section AA is... Figure 5 .

[0059] Furthermore, taking a three-pillar arrangement of three ballast tanks as an example, the center of gravity positions of the ballast tanks are respectively... , and .

[0060] Furthermore, such as Figure 5 As shown, the cross-sectional area of ​​the vertical liquid column in the tuned liquid column damper is... The vertical liquid column height is The cross-sectional area of ​​the horizontal liquid column is The length of the liquid column is .

[0061] Step S204: Using the environmental condition parameter set and the inherent period requirements of heave and roll, the initial master scale parameter set of the semi-submersible platform is reviewed to obtain the original master scale parameter set of the semi-submersible platform that has passed the review.

[0062] In an optional embodiment, the heave and roll natural period requirements represent the natural motion period limit standards set for the three-column semi-submersible floating wind turbine platform, which are motion performance indicators specified by industry and design standards. In this embodiment, the heave natural period needs to be controlled within the range of 20~25s, and the roll natural period needs to be greater than 25s, in order to constrain the basic motion characteristics of the floating body in the marine environment.

[0063] In one optional embodiment, based on marine environmental parameters and predetermined motion cycle indicators, compliance verification of the initially proposed platform master scale parameters can eliminate parameter schemes that do not meet the cycle requirements, and finally determine the official platform master scale parameter set that meets all indicators.

[0064] Step S205: Using the original master dimension parameter set of the semi-submersible platform, the wind turbine capacity parameter set, the first initial layout parameter set, and the second initial layout parameter set, the initial floating wind power active and passive coordinated ballast sway reduction system is sequentially subjected to complete stability verification, motion performance verification, and main structural component section modulus verification.

[0065] In one optional embodiment, the complete stability check is used to verify the anti-overturning capability and static stability performance of a floating body equipped with an active ballast tank and a tuned liquid column damper under extreme tilting conditions caused by wind and ballast linkage, and to evaluate whether the platform meets the stability safety standards for offshore operations.

[0066] Furthermore, motion performance verification is used to examine the sway amplitude and motion period of the floating body under marine environmental loads through comprehensive hydrodynamic analysis and integrated simulation, while verifying the anti-sway effect of the tuned liquid column damper and determining whether the overall motion state of the platform is suitable for the operation requirements of the wind turbine.

[0067] Furthermore, the section modulus verification of the main structural components is used to calculate the effective bearing capacity of key structural sections in conjunction with the actual stress on the floating body. Then, by comparing the material properties with industry standard limits, it is determined whether the core structure of the platform has sufficient strength under continuous load.

[0068] In one alternative embodiment, stability is fundamental to the safe operation of the floating platform. Wind, waves, and ballast adjustments alter the floating platform's center of gravity and tilt state, necessitating verification of its anti-overturning capability to mitigate the risk of capsizing. Furthermore, ocean waves, wind, and currents continuously excite the floating body's motion, requiring the associated anti-roll devices to match its motion characteristics. Therefore, overall motion performance and anti-roll effectiveness must be checked to ensure stable turbine operation. Additionally, ballast tanks and liquid column dampers occupy structural cross-sections and reduce the effective load-bearing area. Therefore, when combined with environmental and turbine ultimate loads, structural strength needs to be verified to ensure the long-term safety and reliability of the platform's main structure.

[0069] In this embodiment, by utilizing the established set of original master dimensions parameters of the semi-submersible platform, the set of wind turbine capacity parameters, the first set of initial layout parameters, and the second set of initial layout parameters, the systemic verification of the three core dimensions of stability, motion performance, and structural strength is completed in sequence. This allows for a comprehensive verification of whether the overall performance of the entire active-passive coordinated ballast sway reduction system meets the standards.

[0070] Step S206: When the integrity stability check, motion performance check, and main structural component section modulus check are all passed, the initial floating wind power active-passive coordinated ballast anti-sway system is optimized based on the verified semi-submersible platform target main scale parameter set, the first target layout parameter set of multiple active ballast chambers, and the second target layout parameter set of multiple passive tuned liquid column dampers, to obtain the target floating wind power active-passive coordinated ballast anti-sway system.

[0071] In one optional embodiment, provided that the stability, motion performance and structural strength are all qualified, the initial system is optimized and integrated by using the finalized platform main dimensions, active ballast tank layout parameters and tuned liquid column damper layout parameters. This results in a finished floating wind power active and passive coordinated ballast anti-sway system that meets the requirements of marine conditions, unit operation and specifications.

[0072] For example, the water distribution logic and control range of the active ballast tank can be finely optimized by combining the target sea area environmental conditions and wind turbine operating requirements to match the attitude adjustment needs under different sea conditions. Furthermore, based on the verified frequency matching relationship, the structural parameters and layout of the tuned liquid column damper can be optimized in detail to further improve the response efficiency and damping effect of passive roll reduction.

[0073] Furthermore, by combining the structural strength verification results, the connection structure and cross-sectional construction of the ballast tank, liquid column damper and platform body can be optimized, thereby compensating for the structural section weakening effect caused by the tank and liquid column and improving the overall structural reliability.

[0074] Furthermore, by integrating the operating logic of the active ballast system and the tuned liquid column damping system, the collaborative adaptation design of the two systems is completed, and the linkage of active and passive functions is realized.

[0075] Finally, once the entire system drawings, parameter files, and design scheme are finalized, the target floating wind power active and passive coordinated ballast sway reduction system that meets performance standards and is adapted to on-site working conditions will be output.

[0076] The floating wind power active and passive coordinated ballast anti-sway system design method provided in this embodiment integrates two systems, active ballast and passive liquid column anti-sway, and establishes a systematic iterative design process. It can take into account the stability, motion performance and structural strength of the floating body, improve the overall adaptability and operational stability of the floating wind power platform, and reduce the cost of repeated design.

[0077] In some optional implementations, step S202 above includes: Step S2021: Determine the direction and magnitude of the main environmental loads based on the set of environmental condition parameters.

[0078] In one optional embodiment, the main environmental load refers to the external natural loads acting on the floating wind power platform in the target sea area, which may include three categories: wave load, ocean current load, and wind load.

[0079] Furthermore, the direction of action of the main environmental loads indicates the direction of the loads such as wind waves and ocean currents relative to the semi-submersible platform; the magnitude of the main environmental loads indicates the intensity and size of various environmental loads, which is determined by parameters such as wave height, period, current velocity, and wind speed, and is used to determine the lower limit of the platform's load-bearing and anti-motion capabilities.

[0080] In one optional embodiment, the direction of flow and magnitude of force of the three core loads—waves, currents, and wind—can be determined sequentially using the obtained set of environmental condition parameters.

[0081] For example, the main direction of wave arrival can be determined based on the wave parameters of the sea area, and the wave load magnitude can be determined by combining wave height and period.

[0082] Furthermore, the direction of the main current can be determined based on the distribution of ocean current velocity, and the magnitude of the current load can be calculated by combining the velocity values.

[0083] Furthermore, by combining the region's annual wind direction and speed data, the dominant wind direction can be determined. Simultaneously, wind speed can be used to determine the magnitude of wind loads, and then all load directions and corresponding magnitude data can be compiled and organized to form complete environmental load information.

[0084] Step S2022: Determine the initial master scale parameter set of the semi-submersible platform based on the environmental condition parameter set and motion performance requirements.

[0085] In one optional embodiment, the motion performance requirements represent the motion index constraints set for the semi-submersible floating wind power platform. The core of these requirements is the inherent period limit: the heave inherent period is controlled within 20~25s, and the roll inherent period is greater than 25s. It also includes operational indicators such as the floating body sway angle and nacelle acceleration to ensure the stable operation of the platform and the wind turbine.

[0086] In one optional embodiment, by combining the characteristics of marine environmental loads with the platform's predetermined motion performance indicators, a complete set of basic structural parameters for the semi-submersible platform, such as columns, displacement, and draft, is initially determined, thereby forming the corresponding initial set of principal scale parameters.

[0087] For example, the initial range of values ​​for the column diameter, column height, and column spacing can be determined by considering water depth, load direction, and magnitude to avoid issues such as bottoming out and localized load concentration. Then, the platform's displacement and draft can be initially set by referring to the inherent period requirements in motion performance and considering the marine conditions.

[0088] Furthermore, the platform's operational requirements can be matched synchronously, and the initial mooring stiffness parameters can be determined. Then, by integrating the obtained column parameters, displacement, draft, mooring stiffness, and other parameters, the final set of initial master dimension parameters for the semi-submersible platform can be formed.

[0089] In some optional implementations, step S204 above includes: Step S2041: Based on the environmental condition parameter set and the initial principal scale parameter set of the semi-submersible platform, calculate the waterline area of ​​the platform using the heave inherent periodicity relationship.

[0090] In one optional embodiment, the platform waterline surface area represents the total area of ​​the closed cross section formed by the intersection of the water surface and the floating structure when the floating body is floating on the water surface.

[0091] In one alternative embodiment, by combining the environmental condition parameters of the target sea area and the initial principal scale parameters of the semi-submersible platform, and using the heave natural period theory formula, the total waterline area required for the platform design can be calculated in reverse.

[0092] For example, extract the seawater density and gravitational acceleration from the environmental parameters, and retrieve the platform displacement and heave direction added mass from the initial principal scale parameters. At the same time, clarify the range of the heave natural period specified in the design (20~25s) and select the compliant period calculation value.

[0093] Furthermore, using the heave natural period theory formula shown in the following relationship (1), the total waterline area required for platform design can be calculated in reverse:

[0094] In the formula: Indicates the inherent period of heave; This indicates the displacement, which is determined by the volume of the underwater portion of the floating body. The added mass in the heave direction can be initially determined using design empirical coefficients. Indicates the density of seawater; Represents gravitational acceleration; This represents the surface area of ​​the waterline (determined by the diameter of the column).

[0095] Step S2042: Using the waterline area of ​​the platform, the initial master dimensional parameters of the semi-submersible platform, including the diameter of the support columns, are reviewed.

[0096] In one optional embodiment, the total waterline area calculated in the previous step is used as the standard. By combining the cross-sectional calculation logic of the three-column platform, the compliance review of the initially set column diameter can be carried out, and it can be further determined whether the initial column size meets the waterline area requirements.

[0097] For example, in a three-column semi-submersible platform, the cross-section of the columns is circular, the water surface area of ​​a single column is the area of ​​a circle, and the total water surface area is the sum of the cross-sectional areas of the three columns.

[0098] Furthermore, by substituting the total waterline area and the number of columns into the multi-column waterline area calculation formula shown in equation (2), the theoretically compliant column diameter can be derived:

[0099] In the formula: Indicates the number of platform pillars; Indicates the diameter of the column.

[0100] Furthermore, the theoretical column diameter is compared with the column diameter initially proposed in the design phase. If the deviation is within the allowable design range, the column diameter verification is deemed successful; if the deviation exceeds the limit, the verification is deemed unsuccessful, and the process is returned to adjust the initial principal dimension parameters and recalculate.

[0101] Step S2043: When the verification of the column diameter is passed, the set of hydrostatic motion inertial parameters of the floating body is obtained based on the initial master scale parameter set of the semi-submersible platform and processed by the numerical model of the semi-submersible platform.

[0102] In one optional embodiment, the numerical model of the semi-submersible platform represents a digital three-dimensional simulation model built using professional marine engineering simulation software, which fully replicates the structural form, dimensional parameters and spatial layout of the semi-submersible platform.

[0103] Furthermore, the set of hydrostatic motion inertial parameters of the floating body may include parameters such as waterline surface area moment, center of buoyancy height, center of gravity height, displacement volume, roll moment of inertia, roll radius of inertia, and additional roll moment of inertia.

[0104] In one optional embodiment, after the column diameter has passed the verification, the initial master dimensional parameters of the entire semi-submersible platform are input into the numerical model of the semi-submersible platform. Then, through model simulation calculation, a complete set of parameters related to the hydrostatic force and motion inertia of the floating body can be obtained in batches.

[0105] For example, input all the confirmed and qualified initial principal dimension parameters, such as column diameter, column height, column spacing, total platform displacement, and design draft, into the semi-submersible platform numerical model in sequence, and complete the basic configuration of the model.

[0106] Furthermore, environmental parameters such as water depth and seawater density of the target sea area can be matched, and the simulation calculation mode can be set to hydrostatic and inertial parameter solution mode, while the additional load condition can be turned off.

[0107] Furthermore, a numerical model of the semi-submersible platform is run, and the software automatically performs analytical calculations on the floating body's spatial morphology, drainage area, and mass distribution. Further, after the simulation is complete, all parameters are extracted from the model results and integrated to form a data set including the waterline surface area moment. Height of the center of buoyancy Center of gravity height Rolling moment of inertia A set of inertial parameters for the hydrostatic motion of a floating body with equal parameters.

[0108] Step S2044: Based on the set of inertial parameters of the buoy's hydrostatic motion, the natural period of the roll is calculated using the initial stability relation and the natural period of the roll relation.

[0109] In one optional embodiment, by combining the set of hydrostatic motion inertial parameters of the floating body, the platform's roll natural period value can be obtained by sequentially calculating the formulas for the center of gravity radius, initial stability height, and roll natural period.

[0110] For example, the geocentric radius is first calculated using the following relationship (3):

[0111] In the formula: Indicates the geocentric radius; Represents the surface area moment of the waterline; Indicates the volume of water drained.

[0112] Furthermore, the initial stability height is calculated using the following relationship (4):

[0113] In the formula: Indicates high initial stability, and is a core indicator for measuring the static stability performance of a floating body under small angles of inclination; it refers to the center of gravity of the floating body. To stabilize The vertical distance between them; This indicates the height of the platform's center of gravity.

[0114] Furthermore, the natural period of roll is calculated using the following relationship (5):

[0115] In the formula: Indicates the inherent period of the roll; Indicates the moment of inertia of rolling; Indicates the radius of roll inertia; This represents the additional roll moment of inertia, which can be initially determined by a coefficient. The coefficient is a design empirical coefficient, generally taken as 1 to 1.5.

[0116] Step S2045: When the inherent period of the roll is less than or equal to a preset threshold, adjust the initial master scale parameter set of the semi-submersible platform, and review the adjusted initial master scale parameter set of the semi-submersible platform until the initial master scale parameter set of the semi-submersible platform passes the review, and obtain the original master scale parameter set of the semi-submersible platform that has passed the review.

[0117] In one optional embodiment, when the calculated inherent roll period does not meet the design threshold requirement, the initial master scale parameters of the platform can be adjusted accordingly, and all the review processes described above can be repeated in full for continuous iterative optimization until the roll period index meets the standard.

[0118] For example, the calculated roll natural period Compare with the preset threshold (25s), if If the current master dimension parameters are not met, then the initial master dimension parameters of the semi-submersible platform are modified accordingly, based on the periodic calculation logic. The main adjustments are made to two core parameters: column diameter and column spacing. If necessary, auxiliary parameters such as column height and displacement can also be fine-tuned simultaneously.

[0119] Furthermore, after the parameters are adjusted, the process jumps back to step S2041 and repeats steps S2041 to S2044. A period determination is performed after each round of calculation. If the requirements are still not met, the main scale parameters are adjusted again and the entire verification process is repeated to form a closed loop iteration until the inherent roll period meets the design standard.

[0120] Step S2046: When the inherent period of the roll is greater than the preset threshold, the initial master scale parameter set of the semi-submersible platform is determined as the original master scale parameter set of the semi-submersible platform.

[0121] In an optional embodiment, when the inherent period of the roll meets the design threshold requirement, the parameter iteration process is terminated, and the current set of master scale parameters is finally determined as the original master scale parameter set that has passed the review.

[0122] For example, the calculated roll natural period Compare with the preset threshold (25s), if If the platform's motion cycle index is found to fully meet the design requirements, then it is determined that the platform's motion cycle index fully meets the design requirements.

[0123] Furthermore, the current and subsequent parameter adjustments and repeated verification work are concluded, confirming that all current master-scale parameters of the semi-submersible platform are compliant. Then, the current set of initial master-scale parameters can be organized, numbered, and archived, and used as the final set of original master-scale parameters for the semi-submersible platform that has passed verification.

[0124] In some optional implementations, step S205 above includes: Step S2051: Based on the wind turbine capacity parameter set, the first initial layout parameter set, and the second initial layout parameter set, perform a complete stability check on the initial floating wind power active-passive coordinated ballast sway reduction system.

[0125] In one optional embodiment, by utilizing the wind turbine capacity parameter set, the first initial layout parameter set, and the second initial layout parameter set, a complete stability-specific verification of the floating wind power platform integrating active and passive ballast anti-rolling system can be carried out. This can verify whether the platform's anti-overturning capability under extreme working conditions of wind, waves, and ballast linkage meets the design and specification requirements.

[0126] Specifically, step S2051 includes: Step a1: Calculate the float balance state parameter set of the float, which includes multiple active ballast tanks and multiple tuned liquid column dampers, based on the first initial layout parameter set and the second initial layout parameter set.

[0127] In one optional embodiment, the floating body equilibrium state parameter set represents the sum of all basic static parameters of a semi-submersible platform equipped with an active ballast tank and a tuned liquid column damper under still water buoyancy and without additional tilting loads. These parameters may include the empty ship's center of gravity position, the volume of each liquid tank (active ballast tank and tuned liquid column), the free surface moment of inertia of the liquid tanks, the wind-exposed surface area of ​​the platform's outer plate above water, the position of the center of buoyancy, and the displacement volume.

[0128] In one optional embodiment, by combining the initial layout parameters of the active ballast tank and the tuned liquid column damper, and by calculating and summarizing the various basic hydrostatic parameters of the platform in the static water buoyancy state, a corresponding set of floating body equilibrium state parameters can be finally formed.

[0129] For example, the active ballast compartments on the upper part of the three pillars can be obtained from the first initial layout parameter set. ,cabin , The three-dimensional coordinates, external dimensions, single-compartment design volume, and compartment layout are obtained. Simultaneously, the spatial location, cavity volume, liquid column cross-sectional area, and length parameters of the three sets of U-shaped tuned liquid column dampers can be obtained from the second initial layout parameter set.

[0130] Furthermore, considering the overall structural dimensions of the platform, the total volume of all active ballast tanks and tuning liquid column cavities is calculated. Simultaneously, the free surface moment of inertia of each liquid tank and liquid column cavity is calculated separately.

[0131] Furthermore, the wind-exposed surface area of ​​the platform's above-water outer plates, wind turbine supports, and other structures can be calculated using the platform's outer contour dimensions to determine the area affected by wind loads. Then, based on the empty vessel state, and considering the ballast tanks, liquid column structures, and internal liquid mass, the platform's center of gravity position can be calculated. Simultaneously, based on the platform's displacement volume, the position of the center of buoyancy and the displacement volume in still water buoyancy can be determined.

[0132] Furthermore, all the data obtained from the solution, such as the hull volume, free surface moment of inertia, wind-exposed surface area, center of gravity, center of buoyancy, and displacement volume, are integrated and archived to form a complete set of floating body equilibrium state parameters.

[0133] Step a2: Calculate the tilt angle generated by the maximum unit wind tilting moment based on the wind turbine capacity parameter set, and determine the maximum tilt angle of the active ballast system.

[0134] In one optional embodiment, the maximum unit wind tilting moment represents the ultimate overturning moment formed at the bottom of the tower when strong offshore winds act on the upper structure of the wind turbine tower, blades and platform. It is determined by the ultimate operating load of the wind turbine and is directly used to calculate the wind-induced tilting angle.

[0135] Furthermore, the maximum tilt angle represents the ultimate total tilt angle that the platform can achieve under the combined effect of the tilt adjustment of the active ballast system and the tilt caused by the wind tilting moment.

[0136] In an alternative embodiment, the maximum tilt angle can be calculated using the following relationship (6):

[0137] In the formula: Indicates the maximum tilt angle; This represents the maximum tilt angle of the float when the active ballast system is working, and is a known design value. The tilt angle generated by the maximum unit wind tilting moment is calculated by extracting the bending moment load from the unit manufacturer, as shown in the following relationship (7):

[0138] In the formula: This indicates that the data was obtained through the generator set manufacturer. This indicates the pitching hydrostatic stiffness of a floating wind turbine platform.

[0139] Step a3: With the maximum tilt angle as the target, use the first initial layout parameter set and the floating body balance state parameter set to calculate the operating parameter set of the active ballast system at the maximum tilt angle.

[0140] In one optional embodiment, the operating condition parameter set represents the set of mechanical and morphological parameters of the platform under the maximum tilt angle limit operating condition, which may include parameters such as the platform's displacement, buoyancy center position, drift center position, overall center of gravity position, ballast water mass allocated to each ballast tank, and hydrostatic stiffness at that tilt angle.

[0141] In an alternative embodiment, at the maximum tilt angle With the objective of calculating the ballast water allocation of each ballast tank under extreme tilting conditions, and combining the hull layout and floating body balance parameters, the final set of operating condition parameters can be formed by solving the complete set of mechanical parameters of the platform under this condition.

[0142] For example, the coordinates of the three ballast tank centers of gravity can be obtained from the first initial layout parameter set, i.e. , and .

[0143] Furthermore, the maximum tilt angle of the active ballast system is calculated using the following relationships (8) and (9), respectively. Ballast tanks of lower pillar 2 and pillar 3 , Adjusting the quality of ballast water:

[0144] In the formula: This indicates the heave hydrostatic stiffness of a floating wind power platform; and These represent the platform's roll and pitch angles, respectively. Represents gravitational acceleration; Indicates the maximum tilt angle Ballast tank of lower column 2 Adjusting the quality of ballast water; Indicates the maximum tilt angle Ballast tank of lower column 3 Adjust the ballast water quality. Furthermore, and It can be used as an input parameter for the mass distribution of the floating body to recalculate the tilt angle. The lower center of gravity position.

[0145] Furthermore, based on the law of conservation of mass, the ballast tank of column 1 was calculated. The mass of ballast water is adjusted as shown in the following formula (10):

[0146] In the formula: Indicates the maximum tilt angle Ballast tank of lower column 1 Adjust the quality of ballast water.

[0147] Furthermore, using the three sets of ballast water masses calculated above as input parameters for mass distribution, and combining them with the floating body equilibrium state parameter set, the platform displacement, buoyancy center position, drift center position, and overall center of gravity position under the maximum tilt angle condition are recalculated. Finally, all data such as ballast water distribution mass, displacement, buoyancy center, drift center, center of gravity, and static stiffness under this condition are summarized to form the corresponding condition parameter set.

[0148] Step a4: Calculate the maximum restoring arm value of the float based on the set of working condition parameters, and construct the static stability curve.

[0149] In one optional embodiment, the maximum restoring lever arm value of the float represents the maximum lever arm formed by the line of action of buoyancy and the line of action of gravity after the float tilts. Furthermore, this value represents the ultimate ability of the float to resist capsizing and return to an upright buoyant state.

[0150] Furthermore, the static stability curve represents a relationship curve plotted with the inclination angle of the float as the horizontal axis and the restoring arm GZ as the vertical axis, which can intuitively reflect the change law of the restoring ability of the float under different inclination angles.

[0151] In one alternative embodiment, by utilizing the set of operating parameters and combining the floating body geometry, displacement volume, center of gravity and center of buoyancy, the restoring arm GZ value under different tilting states can be calculated angle by angle using a static calculation method.

[0152] Furthermore, the platform is traversed across the entire angular range from upright to ultimate capsizing angle, and the maximum restoring arm value (GZ maximum value) of the float is extracted within the entire range. This value represents the ultimate anti-capsizing capability of the float.

[0153] Furthermore, using the tilt angle as the horizontal axis and the restoring arm GZ as the vertical axis, the GZ values ​​corresponding to each of the full angles are marked one by one, and a smooth line is drawn to generate a static stability curve. At the same time, key feature points such as the tilt angle corresponding to the maximum restoring arm and the tilt angle with zero restoring arm can also be marked on the curve.

[0154] Step a5: Using the static stability curve, perform a complete stability check on the initial floating wind power active-passive coordinated ballast sway reduction system.

[0155] In one optional embodiment, obtaining the preset complete stability performance requirements may include criterion indicators such as minimum restoring arm limit, maximum restoring arm limit, effective stability tilt angle range, and ultimate safe tilt angle.

[0156] Furthermore, verify whether the restoring arm is positive throughout the entire effective working tilt angle range, and determine whether the float has self-restoring capability throughout the entire range. At the same time, compare the maximum restoring arm value in the curve with the specification limit, and confirm that the value meets the minimum requirements.

[0157] Furthermore, the limit tilt angle was checked. The corresponding restoring arm is determined, ensuring that the float still possesses an effective restoring moment under design extreme conditions and will not capsize. Finally, an overall judgment is made based on multiple criteria, distinguishing between two results: qualified and unqualified in terms of stability.

[0158] Step a6: When the initial floating wind power active-passive coordinated ballast sway reduction system meets the preset integrity stability performance requirements, the integrity stability check of the initial floating wind power active-passive coordinated ballast sway reduction system is determined to be passed.

[0159] In one optional embodiment, all stability indicators such as static stability curve, maximum recovery arm, and extreme tilt angle are reviewed. When it is confirmed that all parameters meet the complete stability performance requirements preset by the project and the classification society, the complete stability check of the initial floating wind power active and passive coordinated ballast roll reduction system can be determined to be passed.

[0160] Furthermore, it also includes: Step a7: If the complete stability check fails, adjust the original master scale parameter set and the first initial layout parameter set of the semi-submersible platform respectively, and use the adjusted original master scale parameter set and the first initial layout parameter set of the semi-submersible platform to perform a complete stability check on the initial floating wind power active and passive coordinated ballast sway reduction system.

[0161] In one optional embodiment, when the overall stability check fails, the cause of the defect is first analyzed: if the overall anti-tipping capacity is insufficient, the original master dimension parameter set of the semi-submersible platform is adjusted first, which may include increasing the column diameter, adjusting the column spacing, optimizing the draft and displacement, etc., to improve the stability of the floating body foundation.

[0162] Furthermore, if the ballast tank layout results in an unreasonable center of gravity or excessive influence from the free surface, the first initial layout parameter set is adjusted to optimize the position, volume, and arrangement of the active ballast tanks.

[0163] Furthermore, once the parameters are adjusted, return to step a1 and repeat steps a1 to a7 until the complete stability check is passed and the iteration stops.

[0164] Step S2052: Once the integrity stability check is passed, determine the main cross-sectional position of the floating structure based on the extreme operating condition load of the wind turbine and the direction of action of the main wave load.

[0165] In one optional embodiment, the ultimate operating condition load of the wind turbine represents the combination of loads transmitted to the floating platform by the wind turbine under extreme operating conditions such as extreme operation, storm, and shutdown. It is the maximum force exerted by the wind turbine on the platform and may include the ultimate combined bending moment at the bottom of the tower and the ultimate combined shear force at the bottom of the tower.

[0166] Furthermore, the main wave load direction represents the direction of the most frequent and strongest wave in the target sea area. The impact and disturbance forces of the waves on the floating body are most significant in this direction, which is the load direction that must be considered in structural hazard profile determination and hydrodynamic simulation.

[0167] Furthermore, the main cross-sectional location of the floating structure represents the structural cross-sectional location defined in key stress areas such as the semi-submersible platform columns and connecting structures, taking into account the ultimate load of the wind turbine and the direction of the mainstream wave load. Moreover, this location is preferentially selected from the sections containing the active ballast tank, the tuned liquid column damper, and areas of concentrated load.

[0168] In one example, the selected structural cross-sectional load calculation section location is as follows: Figure 6 As shown.

[0169] In one optional embodiment, provided that the integrity and stability check is qualified, by combining the two boundary conditions of the extreme working condition load of the wind turbine and the direction of the mainstream wave load in the sea area, the area where the platform is under the most severe stress can be identified, and the main cross-sectional position of the floating structure can be accurately delineated.

[0170] For example, the ultimate combined bending moment and ultimate combined shear force at the bottom of the tower can be extracted from the wind turbine capacity parameters, thereby determining the load's action form, location, and force transmission path, as well as which structural areas of the platform the ultimate load will be concentratedly transmitted to.

[0171] Furthermore, by combining the environmental parameters of the target sea area, the main wave load direction with the highest proportion and largest load magnitude throughout the year can be identified, thereby determining the main impact direction of wave force on the floating body and identifying the areas where the floating body is prone to bending and shearing damage under wave action.

[0172] Furthermore, by combining the superposition of the ultimate load of the wind turbine and the mainstream wave load, the areas of platform stress concentration and maximum deformation under the combined action of the two types of loads can be analyzed. For example, in this embodiment, the three-column semi-submersible platform focuses on the column body, the connection structure between the columns, and the structural area where the active ballast tank and U-shaped tuned liquid column damper are embedded. These locations are inherently mechanically weak areas due to structural openings and weakened cross-sections.

[0173] Furthermore, based on the load transfer direction and structural layout, cross-sections can be defined one by one in weak and high-load areas: corresponding sections can be set for each column, and additional sections can be added in the structural sections through which the tuning liquid column and active ballast tank penetrate. Furthermore, all sections are numbered and marked (e.g., section 1, section 2, section 3), and the spatial coordinates, cross-sectional shape, and structural location of each section are recorded.

[0174] Step S2053: Perform frequency domain hydrodynamic analysis and calculation of the floating body using the mesh model of the outer surface of the underwater structure to obtain the frequency domain hydrodynamic calculation results of the floating body.

[0175] In one optional embodiment, the underwater structure's outer surface mesh model is represented by a digital mesh model formed by discretizing the entire underwater outer contour surface of the floating body using finite element / hydrodynamic simulation software. Furthermore, this model can accurately reproduce the platform's underwater shape, dimensions, and spatial configuration.

[0176] In one optional embodiment, by constructing a mesh model of the outer surface of the underwater structure and using hydrodynamic simulation software to conduct frequency domain hydrodynamic analysis, the hydrodynamic response parameters of the floating body under different wave periods and different wave directions can be solved, and a complete set of frequency domain hydrodynamic calculation results can be output.

[0177] For example, based on the platform's three-dimensional structural shape, the above-water structure is ignored, and only the entire underwater outer surface is selected as the modeling object. Then, according to the accuracy requirements of hydrodynamic simulation, the underwater curved surfaces, cylindrical surfaces, and connecting surfaces are discretized into meshes, ensuring uniform mesh size and smooth transitions. At the same time, the mesh is refined in areas with large curvature changes and concentrated loads, such as around columns and liquid columns, to improve computational accuracy.

[0178] Furthermore, after performing model checks and eliminating issues such as mesh distortion, missing surfaces, and overlaps, a compliant mesh model of the outer surface of the underwater structure can finally be formed.

[0179] Further, select simulation software (such as Wadam) and import the constructed underwater structure's outer surface mesh model into the software. Then, input the platform's center of gravity, six-degree-of-freedom moment of inertia, and initial parameters for the additional mass. Further, based on the wave characteristics of the sea area, set the wave period range and wave direction angle (including the direction of the main wave load). Finally, input environmental constants such as sea depth, seawater density, and gravitational acceleration, and complete all calculation condition configurations.

[0180] Furthermore, by running the software solver and performing frequency domain hydrodynamic iterative calculations, the software can then solve for the interaction between the floating body and the waves based on potential flow theory.

[0181] Furthermore, after the calculation is completed, the corresponding frequency domain hydrodynamic calculation results of the floating body are exported, which may include the six-degree-of-freedom motion amplitude response curve, the six-degree-of-freedom wave force transfer function, the added mass of the floating body in each direction, the radiation damping coefficient, the water pressure distribution cloud map of the structural surface grid and the water pressure value of each grid cell, etc.

[0182] Step S2054: Using the main cross-sectional position of the floating body structure, integrate the water pressure distribution of the structural surface grid in the frequency domain hydrodynamic calculation results of the floating body along the ship length to the cross-section to obtain the main structural cross-sectional load.

[0183] In an optional embodiment, the main structural section load represents the total internal force of the section obtained by integrating the surface water pressure generated by the waves along the specified structural section, with bending moment as the main characterization form.

[0184] In an alternative embodiment, the cutting plane and integration direction (along the ship's length) of the section can be determined by locating the main cross-sectional position of the floating structure in the underwater mesh model.

[0185] Furthermore, the coordinates, cell area, and real-time water pressure of all underwater grid cells in the frequency domain hydrodynamic results are extracted, and the spatial relationship between each grid cell and the target profile is determined.

[0186] Furthermore, the water pressure exerted by waves on the surface of the floating body is a distributed load. The pressure of a single grid cell will generate internal forces on a specified cross section. Therefore, the total cross section load can be obtained by vector integration of the pressure loads of all grids on one side of the cross section.

[0187] First, for the main cross-section of the floating structure, all underwater mesh elements on the wave-facing / load-bearing side of the cross-section are selected. Second, the infinitesimal loads generated by a single mesh element on the cross-section can be calculated by combining the mesh element area and the element water pressure. Then, along the ship's length, all infinitesimal loads within the cross-section are continuously integrated, and the total bending moment of the section can be obtained by superposition, which is the main structural cross-sectional load of that section. .

[0188] Step S2055: Based on the frequency domain hydrodynamic calculation results of the floating body, the original master scale parameter set and the second initial layout parameter set of the semi-submersible platform, and using the target integrated numerical model, determine whether the multiple tuned liquid column dampers in the initial floating wind power active and passive coordinated ballast anti-sway system meet the anti-sway requirements.

[0189] In one optional embodiment, the target integrated numerical model represents a fully integrated digital simulation model of the wind turbine, tower structure, semi-submersible platform body, mooring system, active ballast tank, tuned liquid column damper, and other structures and devices, built using professional marine engineering simulation software such as Sima and Bladed. This model represents a fully coupled digital simulation model of the wind turbine, tower, floating body, and mooring system.

[0190] Furthermore, the roll reduction requirements refer to the comprehensive performance indicators set for the active and passive coordinated ballast roll reduction system in this embodiment, which are divided into two major judgment dimensions: First, the frequency matching requirement, the oscillation period of the tuned liquid column damper is similar to the natural period of the buoy's roll and pitch, which can form a resonance energy absorption effect; Second, the motion limit requirement, under all working conditions of still water and random waves, the buoy's roll, pitch angle, and nacelle position acceleration all meet the industry specifications and unit design standards, the buoy's sway amplitude is effectively suppressed, and the wind turbine unit operates smoothly.

[0191] Specifically, step S2055 above includes: Step b1: Based on the frequency domain hydrodynamic calculation results of the floating body, the original master scale parameter set and the second initial layout parameter set of the semi-submersible platform, the free decay simulation of the integrated model under still water conditions is carried out using the target integrated numerical model to obtain the free decay simulation results.

[0192] In one optional embodiment, by calling the target integrated numerical model and importing the frequency domain hydrodynamic calculation results, free decay simulation can be carried out in pure still water conditions without waves, ocean currents, or wind interference, and data such as the motion period of the floating body's natural swaying can be obtained.

[0193] For example, the frequency domain hydrodynamic calculation results of the floating body are input into the target integrated numerical model. Simultaneously, the original master-scale parameter set of the semi-submersible platform is input into this model to reconstruct the platform's physical morphology and constraints. Furthermore, a second initial layout parameter set is input into the target integrated numerical model.

[0194] Furthermore, the simulation condition is set to a still water free decay condition, with all external environmental loads such as waves, currents, and wind loads turned off. Then, according to the design requirements, initial roll and pitch angles are artificially applied to the floating body to induce initial sway displacement. Furthermore, by setting the simulation duration and data sampling frequency, the entire process of the floating body's gradual sway decay can be fully captured.

[0195] Furthermore, the simulation solver was run to obtain motion data of the floating body during its decaying oscillation under the combined action of its own inertia, water damping, and tuned liquid column damping.

[0196] Furthermore, after the simulation, the period of the buoy's roll motion is extracted from the results. and the cycle of pitching motion Simultaneously acquire auxiliary data such as the buoy's sway attenuation rate and the change in sway amplitude during a single cycle.

[0197] Furthermore, by combining the second initial layout parameter set, the natural oscillation frequency of the damper can be calculated using the oscillation frequency formula of the tuned liquid column damper, as shown in the following relationship (11):

[0198] In the formula: This indicates the inherent oscillation frequency of the tuned liquid column damper; Indicates the first Vertical liquid column height; Represents the cross-sectional area of ​​the vertical liquid column; This represents the cross-sectional area of ​​the horizontal liquid column; Indicates the first Length of the horizontal liquid column; Indicates the total number of vertical liquid columns; This indicates the total number of horizontal liquid columns.

[0199] Furthermore, based on the damper's inherent oscillation frequency, the liquid column oscillation period can be calculated from the frequency. .

[0200] Furthermore, this period is compared with the period of the buoy's rolling motion. and the cycle of pitching motion The comparisons are made, the period differences are recorded, and the final free decay simulation results are generated.

[0201] Step b2: Based on the frequency domain hydrodynamic calculation results of the floating body, the integrated numerical model of the target is used to carry out the time domain dynamic motion performance analysis of the integrated model under random wave conditions, and the time domain dynamic motion performance analysis results are obtained.

[0202] In one optional embodiment, based on the same integrated numerical model, by loading real marine environmental loads and conducting long-term time-domain simulations under random wave conditions, the dynamic motion state of the platform in actual sea conditions can be simulated, and the actual roll reduction performance of the tuned liquid column under complex loads can be verified.

[0203] For example, based on the environmental parameters of the target sea area and according to the statistical characteristics of real ocean waves, a random wave spectrum, wave height range, wave period interval, and dominant wave direction angle are set. At the same time, corresponding levels of ocean currents and turbulent wind loads are superimposed to recreate the real composite working conditions at sea. In accordance with the design requirements, the duration of a single simulation is set to be no less than 3 hours, and high-density data sampling points are set. Data such as the attitude and acceleration of the floating body are collected throughout the process.

[0204] Furthermore, the operating model conducts long-term time-domain calculations to simulate the combined effects of wind, waves, and current, including the linkage response process of the floating body, wind turbine, and tuned liquid column damper, as well as the kinetic energy consumed by the continuous oscillation of the liquid inside the tuned liquid column as the floating body swings.

[0205] Furthermore, the maximum roll and pitch angles of the floating body were statistically analyzed throughout the entire simulation period, and the sway amplitude was compared with that under the condition of no tuned liquid column to calculate the sway suppression rate. Then, the three-dimensional acceleration data of the engine room position were extracted, and the peak and mean acceleration values ​​were statistically analyzed. At the same time, the oscillation state and damping output of the liquid inside the tuned liquid column were recorded, and all motion index data were summarized. By comparing with specifications and design limits, the final time-domain dynamic motion performance analysis results were formed.

[0206] Step b3: When the free decay simulation results and the time-domain dynamic motion performance analysis results both meet the corresponding requirements, it is determined that the multiple tuned liquid column dampers in the initial floating wind power active-passive coordinated ballast anti-sway system meet the anti-sway requirements.

[0207] In an optional embodiment, the oscillation period of the tuned liquid column is compared with the rolling motion period of the float. Pitching motion cycle If the three values ​​are similar and the deviation is within the design allowable range, the frequency matching is considered qualified, meaning that the damper can efficiently absorb the swaying energy of the floating body by relying on the principle of frequency resonance; if the period deviation is too large, the frequency matching is unqualified.

[0208] Furthermore, the maximum roll and pitch angles of the floating body were checked, and it was confirmed that all angle values ​​were less than the maximum permissible angles specified by the design and classification society. Then, the peak and average values ​​of the nacelle position acceleration were checked, ensuring that the acceleration was within the limits for safe operation of the wind turbine unit. Finally, it was confirmed that the floating body's roll decay rate and motion stability met the operational requirements of the offshore wind power platform.

[0209] Furthermore, if frequency matching, motion tilt angle, and nacelle acceleration all meet the roll reduction requirements, then the multiple tuned liquid column dampers are deemed to meet the roll reduction requirements. Conversely, if any one of these indicators fails to meet the requirements, then the roll reduction requirements are deemed not met.

[0210] Furthermore, it also includes: Step b4: When multiple tuned liquid column dampers do not meet the roll reduction requirements, adjust the original master dimension parameter set and the second initial layout parameter set of the semi-submersible platform respectively, and use the adjusted original master dimension parameter set and the second initial layout parameter set of the semi-submersible platform to determine whether the multiple tuned liquid column dampers meet the roll reduction requirements.

[0211] In an optional embodiment, when multiple tuned liquid column dampers fail to meet the anti-sway requirements, the adjustment direction can be distinguished by combining the non-compliance items.

[0212] Specifically, if there is a frequency mismatch or a large deviation in the natural period, the second initial layout parameter set should be adjusted first, and the cross-sectional area of ​​the vertical segment of the tuning liquid column should be modified. ,high Horizontal cross-sectional area ,length This can be done to change the oscillation period of the liquid column itself. At the same time, the original master scale parameter set of the semi-submersible platform can be fine-tuned, such as the column diameter and column spacing, to change the natural periods of the buoy's roll and pitch, thereby reducing the difference between the two periods.

[0213] Furthermore, if the sway amplitude and acceleration exceed the standard under wave conditions, in addition to adjusting the size and layout of the liquid column, the main dimensional parameters such as the platform's draft, displacement, and mooring stiffness can be optimized simultaneously to improve the overall motion stability of the platform.

[0214] Furthermore, the adjusted original master scale parameter set and second initial layout parameter set of the semi-submersible platform are re-entered into the target integrated numerical model, and the process returns to step b1. Steps b1 to b4 are repeated until all indicators of the tuned liquid column damper meet the requirements for roll reduction.

[0215] Step S2056: When multiple tuned liquid column dampers meet the sway reduction requirements, the main structural component section modulus of the initial floating wind power active-passive coordinated ballast sway reduction system is checked using the main structural section load and the original master dimension parameter set of the semi-submersible platform.

[0216] Specifically, step S2056 above includes: Step c1: When multiple tuned liquid column dampers meet the anti-sway requirements, determine the theoretical section modulus of the required cross section of the floating structure based on the main structural section load and the minimum yield strength of the structural components.

[0217] In one optional embodiment, the minimum yield strength of the structural member represents the lower limit of the yield strength of the steel / marine structural material constituting the main structure of the semi-submersible platform. It is also the critical stress value at which the material undergoes plastic deformation and the structure suffers permanent damage, and is determined by the material grade and industry standards.

[0218] Furthermore, the theoretical section modulus is the minimum theoretical load-bearing index of a cross section, representing the minimum section modulus that a structural cross section must possess to resist ultimate loads and prevent plastic failure.

[0219] In an alternative embodiment, the ultimate load is determined by the main structural section. The minimum yield strength of the structural material is used as the input condition. The theoretical section modulus that the section must have can be solved by the strength calculation formula, as shown in the following relationship (12):

[0220] In the formula: Represents the theoretical profile module; This indicates the minimum yield strength of a structural member.

[0221] Step c2: Calculate the contribution value of the moment of inertia of each component in the main cross-section of the floating structure, and determine the actual effective cross-sectional modulus.

[0222] In an alternative embodiment, the moment of inertia contribution value represents the equivalent moment of inertia of a single component (including the platform body, ballast tank, and tuning liquid column region) relative to a reference axis on the structural cross-section.

[0223] Furthermore, the actual effective section modulus represents the actual section modulus of the platform's solid structure section after deducting hollow non-stressed areas such as the active ballast tank and the tuned liquid column damper, and can reflect the true load-bearing capacity of the structural section.

[0224] In one optional embodiment, by combining the original principal dimension parameters of the semi-submersible platform, the layout of the active ballast tank and the tuned liquid column, the contribution value of the moment of inertia of each solid component on the cross-section can be calculated. Furthermore, by deducting the influence of the hollow cavity, the final overall effective cross-sectional modulus can be obtained.

[0225] For example, for each major structural section to be checked, a unified baseline reference axis is selected and used as the basis for calculating the moment of inertia. Furthermore, combining the original master scale parameter set of the semi-submersible platform and the first / second layout parameter set, the cross-section components are broken down: including the platform solid structure, the hollow area of ​​the active ballast tank, and the hollow area of ​​the tuning liquid column; the outline, cross-sectional area, and centroid position of each area are clearly defined.

[0226] Furthermore, the contribution value of the moment of inertia is calculated using the following relationship (13):

[0227] In the formula: Indicates the first The contribution of each component to the moment of inertia about the baseline reference axis; Indicates the first The local moment of inertia of each component; Indicates the original total cross-sectional area of ​​the component; This represents the cross-sectional area of ​​the hollow region in the tuning fluid column / active ballast tank (non-stressed areas need to be deducted); Indicates the first The vertical distance from the centroid of each component to the baseline reference axis.

[0228] Furthermore, based on the cross-sectional geometry, the distance from the farthest stressed fiber to the baseline reference axis is determined. Then, using material mechanics formulas, the actual effective section modulus of the cross-section can be calculated by dividing the contribution value of the moment of inertia by this distance.

[0229] Step c3: When the actual effective profile modulus is greater than the theoretical profile modulus and the actual effective profile modulus is greater than the specified minimum profile modulus, the profile modulus verification of the main structural components of the initial floating wind power active-passive coordinated ballast sway reduction system is confirmed to be passed.

[0230] In one optional embodiment, the minimum section modulus is defined as the legally mandated / standard minimum section modulus value for key stress sections such as the columns and connecting structures of floating platforms, based on the classification society specifications and industry design standards related to offshore wind power and marine engineering platforms.

[0231] In one optional embodiment, the actual effective section modulus of the cross section is compared with the theoretical section modulus and the minimum section modulus specified by the classification society. This allows for a comprehensive determination of whether the structural section strength is up to standard, and ultimately, the overall section modulus verification result can be determined.

[0232] For example, the actual effective section modulus is compared with the theoretical section modulus and the specified minimum section modulus. If the actual effective section modulus is greater than the theoretical section modulus (i.e., the actual load-bearing capacity of the structure is greater than the theoretically calculated modulus), and the actual effective section modulus is greater than the specified minimum section modulus (i.e., the actual load-bearing capacity of the structure is higher than the mandatory minimum value in the code), then it means that after deducting the weakening effect of the ballast tank and liquid column, the structural section can still withstand the ultimate load. In this case, it can be determined that the section modulus verification of the main structural components has passed.

[0233] Furthermore, if the actual effective section modulus is less than or equal to the theoretical section modulus or the actual effective section modulus is less than or equal to the specified minimum section modulus, then the section modulus verification of the main structural components is deemed to have failed.

[0234] Furthermore, it also includes: Step c4: If the profile modulus verification of the main structural components fails, adjust the original master dimension parameter set of the semi-submersible platform, and use the adjusted original master dimension parameter set of the semi-submersible platform to verify the profile modulus of the main structural components of the initial floating wind power active and passive coordinated ballast sway reduction system.

[0235] In an optional embodiment, when the structural section modulus verification does not meet the requirements, the cross-sectional structure can be optimized by adjusting the original principal dimension parameters of the semi-submersible platform, and the strength calculation and verification process can be repeated cyclically until the structural strength meets the standard.

[0236] For example, we first analyze the root causes of substandard cross-sections. Specifically, if the actual effective section modulus is too small, it indicates that the cross-sectional area is insufficient, the moment of inertia is too low, or the hollow area accounts for too large a proportion.

[0237] Furthermore, the original master dimension parameter set of the semi-submersible platform can be adjusted in a targeted manner. For example, priority can be given to increasing the diameter of the columns, thickening the wall thickness of the platform connection structure, optimizing the column spacing, increasing the overall structural cross-sectional dimensions, and improving the solid cross-sectional area and moment of inertia. If necessary, the draft and displacement can also be fine-tuned simultaneously to reduce the ultimate section load.

[0238] Furthermore, the adjusted original master-scale parameter set of the semi-submersible platform was updated in the simulation model and calculation files, and the main structural section loads of the corresponding cross-sections were recalculated. .

[0239] Further, return to step c1 and repeat steps c1 to c4 until the section modulus of the main structural components passes the verification.

[0240] In one example, from the perspective of balancing multiple performance aspects, a preliminary design and floating wind power performance verification method for a combined dynamic ballast system and a tuned liquid column passive roll damping system is provided. This method can simultaneously achieve dynamic ballast adjustment and liquid column frequency modulation roll damping for floating wind power. The design method considers the stability of the floating body, overall motion performance, and structural strength requirements. It proposes the design boundaries of the active and passive ballast roll damping system and the interaction factors with the main performance of the floating body, forming an iterative design process for the main dimensions of the active and passive ballast roll damping system and the floating body. This not only realizes the joint design of the dynamic ballast and the tuned liquid column damper, but also provides a qualitative analysis approach (design interaction factors) and a quantitative analysis basis for the impact of the combined system on the main performance of the floating body.

[0241] like Figure 7 As shown, a design method for a floating wind power active-passive coordinated ballast sway reduction system is provided. This system includes an active ballast system and a tuned liquid column damping system. The main process is as follows: S1: Confirm environmental condition parameters: Collect the main environmental condition parameters of the target sea area, including water depth, wave height and period, current speed, and wind speed; S2: Confirm the main dimensions of the floating body: Based on environmental conditions and motion performance requirements, preliminarily confirm the range of main dimensions of the floating platform, including column diameter, column height, column spacing, displacement, and draft; S3: Confirm the position and dimensions of the active ballast tank and the passive tuned liquid column damper; S4: Completeness Check: Calculate the float's equilibrium parameters, wind tilt moment, and initial stability height, including the active ballast tank and the tuned liquid column damper. Then, calculate the static stability curve of the float's foundation and confirm the maximum restoring arm GZ value. Conduct key stability criterion checks. If the stability performance meets the requirements, proceed to S5. If the stability performance does not meet the requirements, return to S2 to modify and confirm the main dimensional parameters, and then conduct the checks in sequence. S5: Select the main structural sections based on wind turbine load and wave load: Select the main section positions of the floating structure based on the ultimate operating condition load of the wind turbine, including the ultimate combined bending moment and combined shear force at the bottom of the tower, and based on the direction of the main wave load. S6: Verify overall motion performance: The motion performance verification consists of two parts. First, verify the hydrodynamic performance of the floating body by performing frequency domain hydrodynamic analysis and calculation. Then, use the integrated numerical model of the unit-tower-floating body-mooring to perform free decay simulation, obtain the pitch and roll motion periods of the integrated floating wind power model, calculate the oscillation period of the tuned liquid column damper, and verify whether the tuned liquid column damper effectively produces a roll reduction effect under the main operating conditions. If the motion performance meets the motion requirements of the unit and the floating body, proceed to S7; if the motion performance does not meet the motion requirements of the unit and the floating body, return to S2 to modify and confirm the main scale parameters, and then carry out the verification in sequence. S7: Verify Structural Strength: Conduct section modulus verification of major structural components. Based on the frequency domain hydrodynamic analysis of the floating body in S6, obtain the loads on the main structural sections of interest. Estimate the section modulus of the sections based on the minimum yield strength of the structural members and verify it against the minimum section modulus specified in the classification society's formula. If the section modulus meets the requirements, the initial iteration of design and performance verification is completed, and proceed to S8. If the section modulus does not meet the requirements, return to S2 to modify and confirm the main dimensional parameters, and then conduct verification in sequence. S8: Preliminary design verification completed.

[0242] The design method for a floating wind power active-passive coordinated ballast roll reduction system provided in this example offers a highly feasible and adaptable design approach for the comprehensive performance optimization design of floating platforms for floating wind power and offshore new energy equipment, the integrated design of active ballast tilting and tuned liquid column passive roll reduction equipment, and the design of active-passive ballast roll reduction equipment. This approach enables the design of active-passive ballast roll reduction equipment while reducing the design iteration costs of floating stability, overall motion performance, and structural performance, and improving the stable power generation performance of the unit.

[0243] Furthermore, taking a three-pillar semi-submersible floating wind turbine platform as an example, the specific implementation of the above-mentioned design method for a coordinated active and passive ballast roll reduction system for floating wind turbines is explained, including: Step 1: Collect key environmental parameters of the target sea area, including water depth, wave height and period, current velocity, and wind speed; confirm the direction and magnitude of the main environmental loads; collect wind turbine capacity parameters; confirm the initial principal dimensional parameters of the semi-submersible platform, including column diameter. Column height Column spacing Discharge drinking water .

[0244] Step 2: Based on the environmental conditions in Step 1 and the requirements for heave and roll natural periods (for semi-submersible platforms, the heave natural period is generally 20-25s, and the roll natural period is generally more than 25s), verify whether the main dimensions of the floating platform meet the requirements. Among them, the heave natural period is confirmed according to the above relationship (1); the roll natural period is confirmed according to the above relationship (5); the initial stability is as shown in the above relationship (4).

[0245] The specific review steps are as follows: 1) Input , Calculate the waterline area Aw of the platform using the above formula (1), and check whether the column diameter meets the requirements using the above formula (2); if it meets the requirements, proceed to step 2). 2) Use modeling software to build a numerical model of the semi-submersible platform, inputting the displacement. and drinking water Available , , , The parameters are calculated using the above relation (5). Check if the requirements are met. If it does not exceed 25 seconds, readjust the column diameter. and column spacing If the requirements are met, proceed to step 3.

[0246] Step 3: Confirm the location and configuration of the active ballast tank and the passive tuned liquid column damper. In this example, the active ballast tank is located on the upper part of each of the three pillars, as shown below. Figure 3 As shown, ballast tank Ballast tanks and ballast tanks The passively tuned liquid column damper consists of three interconnected U-shaped liquid columns, such as... Figure 4 As shown, these are liquid columns. liquid column and liquid column .

[0247] Further, confirm the position and size of the tuning liquid column, such as... Figure 5 As shown, the cross-sectional area of ​​the vertical liquid column in the tuned liquid column damper is... The vertical liquid column height is The cross-sectional area of ​​the horizontal liquid column is The length of the liquid column is .

[0248] Step 4: Conduct active ballast integrity stability verification, which can be done using third-party numerical software (such as HydroD): First, calculate the balance parameters of the float, including the active ballast tank and the tuned liquid column damper, including the position of the empty ship's center of gravity, the volume and free surface moment of inertia of all liquid tanks, including the active ballast tank, and the wind-exposed surface area of ​​the float on the water's outer plate. Then calculate the displacement of the floating body, the position of the center of buoyancy, the position of the center of drift, and the overall center of gravity position under the maximum tilt angle condition of the active ballast system; Next, we need to confirm the maximum tilt angle of the float. It needs to be calculated according to the above relationship (6); Furthermore, the maximum tilt angle of the active ballast system Ballast tanks of lower pillar 1, pillar 2 and pillar 3 , , The mass of ballast water can be calculated according to the above formulas (8) to (10); Furthermore, The calculation requires obtaining the maximum wind tilting moment, which can be obtained from the turbine manufacturer by extracting the maximum bending moment load at the bottom of the tower. Then calculate according to the above relationship (7).

[0249] Finally, the maximum restoring arm GZ value of the buoy was calculated, the static stability curve was plotted, and key stability criterion checks were carried out: Furthermore, if the overall stability performance meets the requirements, proceed to step 5 for motion performance verification; if the overall stability requirements are not met, return to step 2 to adjust the main dimensions, including the column diameter, column height and column spacing, then adjust the ballast tank size and position in step 3, and then repeat step 4 for stability verification.

[0250] Step 5: Based on the ultimate operating condition loads of the wind turbine, including the ultimate combined bending moment and combined shear force at the bottom of the tower, and based on the direction of the main wave loads, select the main cross-sectional position of the floating structure and calculate the frequency domain cross-sectional loads. Furthermore, the main cross-sections of the floating body structure are determined based on the direction of the combined load and the form of the floating body structure. Special attention should be paid to the structural sections where the tuning fluid column and the active ballast tank are located, such as... Figure 6 The image shows the location of the selected structural cross-section for load calculation. Different red lines correspond to different cross-sections.

[0251] Step 6: The performance assessment consists of two parts.

[0252] (1) Verification of the hydrodynamic performance of the floating body.

[0253] Frequency domain hydrodynamic analysis of floating bodies can be performed using third-party software (such as Wadam). The basic steps are to establish a mesh model of the underwater structure's outer surface, input the design wave period range and wave direction angle, input the floating body's center of gravity and moment of inertia, define the ambient water depth, and finally perform frequency domain hydrodynamic calculations. The calculation results include motion amplitude response curves in six degrees of freedom, six-degree-of-freedom wave force transfer functions, the floating body's added mass and radiation damping, and the water pressure distribution on the structure's surface mesh, etc. Based on the main structural profile selected in step 5, the obtained water pressure distribution on the structural surface grid is integrated along the ship's length to the profile to obtain the load on the main structural profile. This is used for structural verification in step 7.

[0254] (2) Verification of the time-domain motion performance of the floating body.

[0255] The time-domain motion performance analysis of the floating wind turbine body requires inputting the six-degree-of-freedom wave force transfer function, the added mass of the floating body and the radiation damping calculated in (1), and using third-party analysis software (such as Sima, Bladed) to build an integrated numerical model of the unit-tower-floating body-mooring, and carry out time-domain motion verification. We conducted free decay simulations using an integrated model under still water conditions to obtain the pitch and roll periods of a floating wind turbine under the action of a mooring system. and The oscillation frequency of the tuned liquid column damper needs to be close to or consistent with the buoyancy frequency in order to produce a rocking reduction effect. The oscillation frequency of the tuned liquid column damper is calculated according to the above relationship (11). Subsequently, dynamic motion performance analysis of the integrated model under random wave conditions can be conducted. By inputting different wave, current, and turbulent wind conditions, a time-domain motion numerical simulation calculation with a single duration of no less than 3 hours can be performed. If the motion calculation results meet the motion requirements of the unit and the floating body, that is, the motion tilt angle and the engine room position acceleration meet the specifications or design requirements, then the structural profile module verification described in step 7 can be carried out; if the overall roll reduction requirements are not met, return to step 2 to adjust the main dimensions, including the column diameter, column height, and column spacing, and then adjust the cross-sectional area and effective length of the tuning liquid column in step 3.

[0256] Step 7: Conduct section modulus verification of major structural components. Based on the section selected in Step 5 and the frequency domain hydrodynamic analysis of the floating body in Step 6, obtain the loads on the section of the main structure of interest. Based on the minimum yield strength of structural members Estimate the required section modulus of the structure As shown in the above relation (12); Furthermore, the minimum section modulus specified in the classification society's formula is... Perform verification; Furthermore, considering the active ballast compartment and the tuned liquid column damper, the effective section modulus contributing to the strength of the actual structure is reduced. Taking section 1 as an example, the calculation of the effective section modulus requires subtracting its occupied cross-sectional area, assuming it includes the horizontal liquid column section. The equivalent moment of inertia (about the baseline reference axis) is The distance from the centroid to the reference axis is The area is The contribution of the moment of inertia of the component to the entire cross section is shown in the above relationship (13); Furthermore, the calculation of the effective section modulus, including the ballast compartment section, is similar.

[0257] Step 8: If the verification in Steps 5, 6, and 7 does not meet the requirements, you need to go back to Step 2 to modify and confirm the main scale parameters, and then carry out the verification in sequence.

[0258] This embodiment also provides a design device for a floating wind power active-passive coordinated ballast sway reduction system. This device is used to implement the above embodiments and preferred embodiments, and details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0259] This embodiment provides a design device for a floating wind power active-passive coordinated ballast sway reduction system, such as... Figure 8 As shown, the device includes: The acquisition module 801 is used to acquire the set of environmental condition parameters and the set of wind turbine capacity parameters for the target sea area.

[0260] The first determining module 802 is used to determine the initial master scale parameter set of the semi-submersible platform for the initial floating wind power active-passive coordinated ballast anti-sway system based on the environmental condition parameter set. The initial floating wind power active-passive coordinated ballast anti-sway system includes an active ballast system and a tuned liquid column damping system.

[0261] The second determining module 803 is used to determine, based on the initial master dimension parameter set of the semi-submersible platform, the first initial layout parameter set of multiple active ballast tanks in the active ballast system and the second initial layout parameter set of multiple passively tuned liquid column dampers in the tuned liquid column damping system.

[0262] The verification module 804 is used to verify the initial master scale parameter set of the semi-submersible platform using the environmental condition parameter set and the inherent period requirements of heave and roll, so as to obtain the original master scale parameter set of the semi-submersible platform that has passed the verification.

[0263] The verification module 805 is used to perform complete stability verification, motion performance verification, and main structural component section modulus verification on the initial floating wind power active and passive coordinated ballast anti-sway system by utilizing the original master dimension parameter set of the semi-submersible platform, the wind turbine capacity parameter set, the first initial layout parameter set, and the second initial layout parameter set.

[0264] The optimization design module 806 is used to optimize the initial floating wind power active-passive coordinated ballast roll reduction system when the integrity stability check, motion performance check, and main structural component section modulus check have all passed. Based on the checked semi-submersible platform target main dimension parameter set, the first target layout parameter set of multiple active ballast chambers, and the second target layout parameter set of multiple passive tuned liquid column dampers, the module obtains the target floating wind power active-passive coordinated ballast roll reduction system.

[0265] The floating wind power active-passive coordinated ballast sway reduction system design device provided in this embodiment of the invention can execute the floating wind power active-passive coordinated ballast sway reduction system design method provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method. Further functional descriptions of the above modules and units are the same as in the corresponding embodiments described above, and will not be repeated here.

[0266] Figure 9 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention.

[0267] The following is a detailed reference. Figure 9 This diagram illustrates a structural schematic suitable for implementing an electronic device according to embodiments of the present invention. The electronic device may include a processor (e.g., a central processing unit, graphics processor, etc.) 901, which can perform various appropriate actions and processes according to a program stored in read-only memory (ROM) 902 or a program loaded from memory 908 into random access memory (RAM) 903. The RAM 903 also stores various programs and data required for the operation of the electronic device. The processor 901, ROM 902, and RAM 903 are interconnected via a bus 904. An input / output (I / O) interface 905 is also connected to the bus 904.

[0268] Typically, the following devices can be connected to I / O interface 905: input devices 906 including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 907 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; memory devices 908 including, for example, magnetic tapes, hard disks, etc.; and communication devices 909. Communication device 909 allows electronic devices to exchange data via wireless or wired communication with other devices. Although Figure 9Electronic devices with various devices are shown, but it should be understood that it is not required to implement or have all of the devices shown, and more or fewer devices may be implemented or have instead.

[0269] In particular, according to embodiments of the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program carried on a non-transitory computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device 909, or installed from a memory 908, or installed from a ROM 902. When the computer program is executed by the processor 901, it performs the functions defined in the floating wind power active-passive coordinated ballast sway reduction system design method of the embodiments of the present invention.

[0270] Figure 9 The electronic device shown is merely an example and should not be construed as limiting the functionality and scope of the embodiments of the present invention.

[0271] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code. When the software or computer code is accessed and executed by the computer, processor, or hardware, the floating wind power active-passive coordinated ballast sway reduction system design method shown in the above embodiments is implemented.

[0272] A portion of this invention can be applied as a computer program product, such as computer program instructions, which, when executed by a computer, can invoke or provide the methods and / or technical solutions according to the invention through the operation of the computer. Those skilled in the art will understand that the forms in which computer program instructions exist in a computer-readable medium include, but are not limited to, source files, executable files, installation package files, etc. Correspondingly, the ways in which computer program instructions are executed by a computer include, but are not limited to: the computer directly executing the instructions, or the computer compiling the instructions and then executing the corresponding compiled program, or the computer reading and executing the instructions, or the computer reading and installing the instructions and then executing the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible to a computer.

[0273] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A design method for a floating wind power active-passive coordinated ballast sway reduction system, characterized in that, The method includes: Obtain the set of environmental condition parameters and wind turbine capacity parameters for the target sea area; Based on the environmental condition parameter set, the initial principal scale parameter set of the semi-submersible platform for the initial floating wind power active-passive coordinated ballast sway reduction system is determined. The initial floating wind power active-passive coordinated ballast sway reduction system includes an active ballast system and a tuned liquid column damping system. Based on the initial master dimension parameter set of the semi-submersible platform, determine the first initial layout parameter set of multiple active ballast tanks in the active ballast system and the second initial layout parameter set of multiple passively tuned liquid column dampers in the tuned liquid column damping system. Using the environmental condition parameter set and the inherent period requirements of heave and roll, the initial principal scale parameter set of the semi-submersible platform is reviewed to obtain the original principal scale parameter set of the semi-submersible platform that has passed the review. Using the original master dimension parameter set of the semi-submersible platform, the capacity parameter set of the wind turbine, the first initial layout parameter set and the second initial layout parameter set, the initial floating wind power active and passive coordinated ballast sway reduction system is sequentially subjected to complete stability verification, motion performance verification and main structural component section modulus verification. Once the integrity stability check, motion performance check, and main structural component section modulus check are all passed, the initial floating wind power active-passive coordinated ballast roll reduction system is optimized based on the checked semi-submersible platform target main scale parameter set, the first target layout parameter set of multiple active ballast chambers, and the second target layout parameter set of multiple passive tuned liquid column dampers, to obtain the target floating wind power active-passive coordinated ballast roll reduction system.

2. The method according to claim 1, characterized in that, Based on the aforementioned environmental condition parameter set, the initial principal dimension parameter set for the semi-submersible platform of the initial floating wind power active-passive coordinated ballast sway reduction system is determined, including: Based on the set of environmental condition parameters, determine the direction and magnitude of the main environmental loads. Based on the environmental condition parameter set and motion performance requirements, the initial master scale parameter set of the semi-submersible platform is determined.

3. The method according to claim 1, characterized in that, Using the aforementioned environmental condition parameter set and the inherent period requirements for heave and roll, the initial principal scale parameter set of the semi-submersible platform is reviewed to obtain a reviewed and approved original principal scale parameter set for the semi-submersible platform, including: Based on the environmental condition parameter set and the initial principal scale parameter set of the semi-submersible platform, the waterline area of ​​the platform is calculated using the heave inherent periodicity relationship. Using the waterline area of ​​the platform, the initial principal dimensional parameters of the semi-submersible platform, including the diameter of the support columns, are reviewed. Once the diameter of the verification column passes verification, the set of hydrostatic motion inertial parameters of the floating body is obtained based on the initial master dimension parameter set of the semi-submersible platform and processed by the numerical model of the semi-submersible platform. Based on the set of inertial parameters of the buoy's hydrostatic motion, the natural period of the roll is calculated using the initial stability height relation and the natural period of the roll relation. When the inherent period of the roll is less than or equal to a preset threshold, the initial master scale parameter set of the semi-submersible platform is adjusted, and the adjusted initial master scale parameter set of the semi-submersible platform is reviewed until the initial master scale parameter set of the semi-submersible platform passes the review, and the original master scale parameter set of the semi-submersible platform that has passed the review is obtained. When the inherent period of the roll is greater than the preset threshold, the initial master scale parameter set of the semi-submersible platform is determined to be the original master scale parameter set of the semi-submersible platform.

4. The method according to claim 1, characterized in that, Using the original master dimension parameter set of the semi-submersible platform, the capacity parameter set of the wind turbine, the first initial layout parameter set, and the second initial layout parameter set, the initial floating wind power active-passive coordinated ballast sway reduction system is subjected to complete stability verification, motion performance verification, and main structural component section modulus verification in sequence, including: Based on the wind turbine capacity parameter set, the first initial layout parameter set, and the second initial layout parameter set, a complete stability check is performed on the initial floating wind power active and passive coordinated ballast sway reduction system. Once the integrity stability check is passed, the location of the main cross-section of the floating structure is determined based on the extreme operating condition load of the wind turbine and the direction of action of the main wave load. The frequency domain hydrodynamic analysis and calculation of the floating body were performed using a mesh model of the outer surface of the underwater structure, and the results of the frequency domain hydrodynamic calculation of the floating body were obtained. By integrating the water pressure distribution on the surface of the floating body along the ship's length to the cross-section using the main cross-sectional position of the floating body structure, the main structural cross-sectional load is obtained. Based on the frequency domain hydrodynamic calculation results of the floating body, the original principal scale parameter set of the semi-submersible platform and the second initial layout parameter set, the target integrated numerical model is used to determine whether the multiple tuned liquid column dampers in the initial floating wind power active and passive coordinated ballast anti-sway system meet the anti-sway requirements. When the multiple tuned liquid column dampers meet the sway reduction requirements, the main structural component section modulus of the initial floating wind power active-passive coordinated ballast sway reduction system is checked using the main structural section load and the original master dimension parameter set of the semi-submersible platform.

5. The method according to claim 4, characterized in that, Based on the wind turbine capacity parameter set, the first initial layout parameter set, and the second initial layout parameter set, a complete stability check is performed on the initial floating wind power active-passive coordinated ballast sway reduction system, including: Based on the first initial layout parameter set and the second initial layout parameter set, calculate the floating body equilibrium state parameter set of the floating body containing multiple active ballast tanks and multiple tuned liquid column dampers; Based on the set of wind turbine capacity parameters, calculate the tilt angle generated by the maximum wind tilting moment of the turbine, and determine the maximum tilt angle of the active ballast system. Using the maximum tilt angle as the target, the operating parameter set of the active ballast system at the maximum tilt angle is calculated using the first initial layout parameter set and the floating body balance state parameter set; Based on the set of operating parameters, the maximum restoring arm value of the floating body is calculated, and the static stability curve is constructed. The static stability curve is used to perform a complete stability check on the initial floating wind power active-passive coordinated ballast sway reduction system; When the initial floating wind power active-passive coordinated ballast sway reduction system meets the preset integrity stability performance requirements, the integrity stability check of the initial floating wind power active-passive coordinated ballast sway reduction system is determined to be passed.

6. The method according to claim 4, characterized in that, Based on the frequency domain hydrodynamic calculation results of the floating body, the original principal scale parameter set of the semi-submersible platform, and the second initial layout parameter set, using the integrated numerical model of the target, it is determined whether the multiple tuned liquid column dampers in the initial floating wind power active-passive coordinated ballast anti-roll system meet the anti-roll requirements, including: Based on the frequency domain hydrodynamic calculation results of the floating body, the original principal scale parameter set of the semi-submersible platform and the second initial layout parameter set, the free decay simulation of the integrated model under still water conditions is carried out using the target integrated numerical model to obtain the free decay simulation results. Based on the frequency domain hydrodynamic calculation results of the floating body, the time domain dynamic motion performance analysis of the integrated model under random wave conditions is carried out using the target integrated numerical model to obtain the time domain dynamic motion performance analysis results. When both the free decay simulation results and the time-domain dynamic motion performance analysis results meet the corresponding requirements, it is determined that the multiple tuned liquid column dampers in the initial floating wind power active-passive coordinated ballast anti-sway system meet the anti-sway requirements.

7. The method according to claim 4, characterized in that, When the multiple tuned liquid column dampers meet the sway reduction requirements, the main structural component section modulus of the initial floating wind power active-passive coordinated ballast sway reduction system is checked using the main structural section load and the original master dimension parameter set of the semi-submersible platform, including: When the multiple tuned liquid column dampers meet the anti-sway requirements, the theoretical section modulus of the required cross section of the floating structure is determined based on the main structural section load and the minimum yield strength of the structural components. Calculate the contribution value of the moment of inertia of each component in the main cross-section of the floating structure, and determine the actual effective cross-sectional modulus; When the actual effective profile modulus is greater than the theoretical profile modulus and the actual effective profile modulus is greater than the specified minimum profile modulus, the profile modulus verification of the main structural components of the initial floating wind power active-passive coordinated ballast sway reduction system is deemed to have passed.

8. The method according to claim 4, characterized in that, The method further includes: If the complete stability check fails, the original master scale parameter set of the semi-submersible platform and the first initial layout parameter set are adjusted respectively, and the complete stability check of the initial floating wind power active and passive coordinated ballast sway reduction system is performed using the adjusted original master scale parameter set of the semi-submersible platform and the first initial layout parameter set. When the plurality of tuned liquid column dampers do not meet the roll reduction requirements, the original master dimension parameter set and the second initial layout parameter set of the semi-submersible platform are adjusted respectively, and the adjusted original master dimension parameter set and the second initial layout parameter set of the semi-submersible platform are used to determine whether the plurality of tuned liquid column dampers meet the roll reduction requirements. If the profile modulus verification of the main structural components fails, the original master dimension parameter set of the semi-submersible platform is adjusted, and the profile modulus of the main structural components of the initial floating wind power active-passive coordinated ballast sway reduction system is verified using the adjusted original master dimension parameter set of the semi-submersible platform.

9. A design device for a floating wind power active-passive coordinated ballast sway reduction system, characterized in that, The device includes: The acquisition module is used to acquire the set of environmental condition parameters and the set of wind turbine capacity parameters for the target sea area; The first determining module is used to determine the initial principal dimension parameter set of the semi-submersible platform for the initial floating wind power active-passive coordinated ballast sway reduction system based on the environmental condition parameter set. The initial floating wind power active-passive coordinated ballast sway reduction system includes an active ballast system and a tuned liquid column damping system. The second determining module is used to determine the first initial layout parameter set of multiple active ballast tanks in the active ballast system and the second initial layout parameter set of multiple passively tuned liquid column dampers in the tuned liquid column damping system based on the initial master dimension parameter set of the semi-submersible platform. The verification module is used to verify the initial master scale parameter set of the semi-submersible platform using the environmental condition parameter set and the inherent period requirements of heave and roll, so as to obtain the original master scale parameter set of the semi-submersible platform that has passed the verification. The verification module is used to perform complete stability verification, motion performance verification, and main structural component section modulus verification on the initial floating wind power active and passive coordinated ballast sway reduction system by using the original master scale parameter set of the semi-submersible platform, the wind turbine capacity parameter set, the first initial layout parameter set, and the second initial layout parameter set. The optimization design module is used to optimize the design of the initial floating wind power active-passive coordinated ballast roll reduction system when the integrity stability check, motion performance check, and main structural component section modulus check have all passed. Based on the checked semi-submersible platform target main dimension parameter set, the first target layout parameter set of multiple active ballast chambers, and the second target layout parameter set of multiple passive tuned liquid column dampers, the module obtains the target floating wind power active-passive coordinated ballast roll reduction system.

10. A computer program product, characterized in that, The system includes computer instructions for causing a computer to execute the design method for a floating wind power active-passive coordinated ballast sway reduction system as described in any one of claims 1 to 8.

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