Marine ranch construction system and method based on offshore wind plant

Abstract

The invention discloses a marine ranch construction system based on an offshore wind plant and a method thereof, and belongs to the technical field of fusion of offshore renewable energy sources and marine ranches. The system comprises a wind generating set, a floating platform and an aquaculture net cage unit, the aquaculture net cage unit is connected with the floating platform through a self-adaptive elastic suspension system, and the self-adaptive elastic suspension system comprises a sensing control unit, a mode switching execution mechanism and an elastic damping assembly. And the rigid connection state and the elastic suspension state can be intelligently switched according to sea conditions. Rigid connection is kept under a normal sea condition to ensure system stability, and an elastic suspension state is converted under a severe sea condition to effectively isolate vibration impact. Meanwhile, the culture net cage unit adopts a netting structure with an adjustable lead angle, the curved surface form can be adjusted according to needs, and netting self-cleaning is achieved. The problem of structural conflict caused by simple superposition of the wind power plant and the marine ranching is solved, and the purposes of structural safety and efficient breeding are achieved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of offshore renewable energy and mariculture integration, and particularly relates to a mariculture construction system based on an offshore wind farm and a method thereof. BACKGROUND

[0002] With the accelerated pace of marine resource development, the integration of offshore wind farms and mariculture has become a research hotspot. However, existing technologies mostly stay at the level of simple spatial superposition and fail to solve the deep-seated problems caused by structural coupling: the continuous vibration generated during the operation of the wind turbine unit is directly transmitted to the net cage through rigid connection, which is prone to cause structural fatigue damage in the long term; and the wave impact force under adverse sea conditions is more likely to exceed the design load. On the contrary, if flexible connection is used for a long time, it will affect the wind precision of the wind turbine and bring inconvenience to the mariculture operation, and there is a risk of collision. At the same time, the traditional net structure lacks self-adaptive ability and is easy to attach pollutants, affecting water exchange. Therefore, it is urgent to develop an integrated construction system that can intelligently adapt to different sea conditions, effectively isolate vibration, maintain system stability, and have self-cleaning ability. SUMMARY

[0003] The purpose of the present application is to provide a mariculture construction system based on an offshore wind farm and a method thereof, which can intelligently switch the mariculture net cage unit between rigid connection and elastic suspension state through sensing control and mode switching mechanism, thereby ensuring the system stability under normal sea conditions and effectively isolating vibration impact under adverse sea conditions.

[0004] This invention adopts the following technical solution: a marine ranching construction system based on an offshore wind farm, including a wind turbine generator set and aquaculture cage units, and a floating platform. The wind turbine generator set is fixedly installed on the floating platform, and the aquaculture cage units are connected to the floating platform through an adaptive elastic suspension system. The adaptive elastic suspension system includes a sensor control unit, a mode switching actuator, and an elastic damping component. The sensor control unit is used to monitor the vibration state of the floating platform, and the mode switching actuator is communicatively connected to the sensor control unit to realize the switching between rigid connection and elastic suspension states. This invention solves the structural conflict problem caused by the simple superposition of offshore wind power and marine ranching by integrating the wind turbine generator set, floating platform, and aquaculture cage units and introducing an adaptive elastic suspension system. This invention achieves a leap from "passive disturbance resistance" to "active disturbance avoidance." Traditional offshore structures mainly rely on enhancing their own stiffness to resist the impact of wind and waves, while this invention, through the sensor control unit and mode switching actuator, enables the aquaculture cage units to intelligently switch between rigid connection and elastic suspension states. Under normal sea conditions, rigid connections ensure the overall stability of the system. In severe sea conditions, the flexible suspension not only effectively isolates the severe vibrations transmitted from the wind turbine and floating platform to the aquaculture cages, but its damping effect also acts as a "dynamic vibration absorber," absorbing some of the vibration energy and thus improving the operational stability of the wind turbine in waves. The significance of intelligently switching between rigid connections and flexible suspension lies in the following: If a rigid connection is always maintained, the wind turbine will generate continuous low-frequency vibrations during operation due to wind shear and yaw. These vibrations will directly act on the aquaculture cage units and their connection points through the rigid structure. Over time, this can easily lead to metal fatigue, causing cracks or even fractures in critical parts such as connection points and cage frames. In severe sea conditions, the enormous wave impact force will act like a lever on the entire structure through the rigid connection. If this enormous impact force far exceeds the static design load, it may lead to structural damage and system failure. If the floating platform remains in a flexible state for an extended period, excessive drifting or swaying will directly affect the wind turbine's alignment accuracy and power generation efficiency, exacerbate fatigue damage to the turbine tower, and cause the aquaculture cage units to continuously sway relative to the platform. This will greatly inconvenience operations such as feeding, monitoring, and maintenance, and may lead to unnecessary collisions between the aquaculture cage units and the platform's support structure. In addition, for normal, small-amplitude movements of the platform (such as slow turns caused by changes in wind direction), rigid connections enable it to respond quickly and maintain consistency, while constant decoupling will cause the aquaculture cage units to react slowly, affecting overall coordination.

[0005] Specifically, the sensing control unit includes a platform vibration sensing module, a connection status sensing module, and an environmental sensing module. The platform vibration sensing module includes an accelerometer and a displacement meter installed on the floating platform to monitor the vibration frequency and amplitude of the floating platform. The connection status sensing module includes a displacement sensor and a force sensor installed on the adaptive elastic suspension system to monitor the relative displacement, relative velocity, and connector load between the aquaculture cage unit and the floating platform. The environmental sensing module includes a wave radar and an anemometer to predict upcoming wave impacts. The preset thresholds include single or multiple judgment conditions related to the heave amplitude, roll / pitch angle, or vibration acceleration of the floating platform. Most importantly, the platform vibration sensing module monitors the vibration frequency and amplitude of the floating platform in real time. When it determines that the vibration state is close to the preset danger threshold (i.e., it may cause system resonance), it will immediately instruct the mode switching actuator to release the rigid connection between the aquaculture cage unit and the floating platform, so that it enters an elastic suspension state. This instantly changes the dynamic model and vibration transmission path of the entire system, destroying the core condition for resonance to occur—the matching of the excitation frequency and the natural frequency of the structure—thereby achieving active avoidance of resonance.

[0006] Specifically, the mode switching actuator is configured to: maintain a rigid or quasi-rigid connection between the aquaculture cage unit and the floating platform when the vibration state is below the preset threshold; and release the rigid or quasi-rigid connection when the vibration state is above the preset threshold, allowing the aquaculture cage unit to enter an elastic suspension state. The quasi-rigid connection means that, in this connection state, the relative displacement between the aquaculture cage unit and the floating platform is controlled within 2mm, and the relative rotation angle is controlled within 0.5°. Even under sea conditions deemed "normal" by the system, there may be sudden large waves or gusts. The small deformations allowed by the quasi-rigid connection can absorb sudden peak energy, preventing excessive stress within the structure. In this state, the connection between the aquaculture cage unit and the floating platform is not a completely immovable rigid connection, but rather allows for extremely small, controllable relative displacement or deformation, while its overall performance remains close to rigidity, effectively transmitting most of the load and maintaining the integrity of the system. The specific value of the preset threshold is determined based on the structural dynamic characteristics of the floating platform (such as heave amplitude, roll / pitch angle, and vibration acceleration) and the stress tolerance range of the organisms in the aquaculture cage unit (for example, for large yellow croaker, the preset vertical vibration acceleration threshold is 0.3 m / s²). 2The system comprehensively considers factors such as decreased feeding willingness and physiological stress (exceeding this threshold may lead to decreased feeding willingness and physiological stress) and short-term wave prediction information from the environmental perception module. The system uses a sensor control unit to evaluate these parameters in real time. When monitoring data indicates that the vibration state is about to endanger structural safety, significantly affect aquaculture efficiency, or foreshadow extreme wave conditions, it determines that the preset threshold has been exceeded and immediately triggers a mode switch. This multi-factor integrated intelligent judgment mechanism ensures that the system provides the optimal growth environment for aquaculture organisms while protecting the structural safety.

[0007] Specifically, the mode switching actuator includes a controller and an actuator. The controller is communicatively connected to the sensing control unit, and the actuator is at least one of a hydraulic locking cylinder, a pneumatic locking cylinder, or an electromagnetic locking pin.

[0008] Specifically, the elastic damping assembly includes an elastic element and a damping element arranged in parallel. The elastic element is at least one of a helical spring, an air spring, and an elastic rubber component, and the damping element is at least one of a hydraulic damper, a viscous fluid damper, and an electromagnetic damper. For example, a helical spring is fitted over a hydraulic damper.

[0009] In the rigid / quasi-rigid connection state, the mode switching actuator (e.g., the piston rod of the hydraulic locking cylinder extends, or the pin of the electromagnetic locking stop pin is inserted) physically forms a rigid connection point, rigidly or quasi-rigidly locking the cage frame of the aquaculture cage unit to the floating platform. The elastic element of the elastic damping assembly (e.g., a coil spring) is in an "idle" state in this condition, hardly participating in the main force bearing, thus being protected and avoiding fatigue caused by continuous operation. In the elastic suspension state, the mode switching actuator is released (e.g., the piston rod of the hydraulic locking cylinder retracts, or the pin of the electromagnetic locking stop pin is disengaged). At this time, the elastic element of the elastic damping assembly becomes the main connection and force transmission component between the two. The vibration energy of the floating platform is no longer directly transmitted to the aquaculture cage unit, but is absorbed through the elastic deformation of the elastic damping assembly, and the kinetic energy is dissipated as heat energy through its damping effect, thereby achieving vibration isolation and protection for the aquaculture cage unit.

[0010] Specifically, the aquaculture cage unit includes a cage frame and a net fixed thereon, the net being a spirally wound curved structure. The net is supported and fixed by a spiral skeleton, the helix angle of which is adjustable.

[0011] This invention integrates an adaptive elastic suspension system with a helical angle-adjustable netting structure, achieving adaptive mode switching and netting self-cleaning under different sea conditions. When the sensor control unit detects that the vibration of the floating platform exceeds a preset threshold, the mode switching actuator immediately activates, putting the aquaculture net cage unit into an elastic suspension state. Based on this state signal, the adjustment control mechanism can be automatically or confirmed to initiate the netting self-cleaning procedure. When the cleaning procedure is initiated in the elastic suspension state, the system drives the helical frame to perform periodic reciprocating motion. At this time, the aquaculture net cage unit has a certain degree of floating freedom, which, combined with the active drive of the helical frame, produces an excellent synergistic cleaning effect: the netting generates complex multi-dimensional fluctuations and shaking, effectively shaking off attached materials and enhancing the local shear force of the water flow on the netting surface, thereby thoroughly washing away the loosened attached materials. When the vibration subsides and stabilizes, the system controls the aquaculture net cage unit to restore a rigid connection, while adjusting the helical angle to a suitable angle for the aquaculture organisms to inhabit, forming a stable aquatic environment.

[0012] A control method for a marine ranching construction system based on an offshore wind farm includes the following steps: monitoring the vibration state of a floating platform and determining whether the vibration state exceeds a preset threshold; when the vibration state exceeds the preset threshold, a control mode switching actuator disconnects the rigid or quasi-rigid connection between the aquaculture cage unit and the floating platform, causing the aquaculture cage unit to enter an elastic suspension state; when the vibration state falls below the preset threshold and remains there for a predetermined time, the control mode switching actuator restores the rigid or quasi-rigid connection.

[0013] A method for supporting and adjusting a net includes: supporting the net using a spiral frame; adjusting the helix angle of the spiral frame to change the surface shape and water flow adaptability of the net. The adjustment of the helix angle is based on factors such as water flow velocity, fish activity within the net cage, or deposits on the net. The method also includes a self-cleaning step: controlling the aquaculture net cage unit to enter an elastic suspension state; driving the spiral frame to perform periodic reciprocating motion; and dynamically adjusting the helix angle during the reciprocating motion to change the shaking mode of the net.

[0014] The core advantage of this invention lies in providing a marine ranching construction system and method based on offshore wind farms. Through the innovative design of an adaptive elastic suspension system and an adjustable netting structure, it solves the structural conflict problem caused by the simple superposition of offshore wind farms and marine ranches. Specifically, through sensor control and a mode switching mechanism, the aquaculture netting unit can intelligently switch between rigid connection and elastic suspension states, ensuring system stability under normal sea conditions while effectively isolating vibration impacts under harsh sea conditions. The adaptive elastic suspension system absorbs some vibration energy, improving the operational stability of the wind turbine generator in waves. The adjustable helix angle netting structure enhances water flow adaptability and, combined with the elastic suspension state, achieves a self-cleaning function for the netting. Attached Figure Description

[0015] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the adaptive elastic suspension system described in Embodiment 1.

[0017] Figure 2 This is a schematic diagram of the sensing control unit described in Embodiment 1.

[0018] Figure 3 This is a schematic diagram of a marine ranching construction system based on an offshore wind farm according to the present invention.

[0019] Figure 4 This is a schematic diagram of the aquaculture cage unit described in Example 1.

[0020] Figure 5 This is a schematic diagram of adjusting the spiral angle of the aquaculture cage unit described in Example 1.

[0021] Figure descriptions: 1-Wind turbine generator set; 2-Floating platform; 3-Aquaculture cage unit; 31-Cage frame; 32-Network; 33-Spiral skeleton; 34-Adjustment and control mechanism; 4-Adaptive elastic suspension system; 41-Sensing control unit; 411-Platform vibration sensing module; 412-Connection status sensing module; 413-Environmental sensing module; 42-Mode switching actuator; 43-Elastic damping component. Detailed Implementation

[0022] 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, and 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.

[0023] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Example 1 A marine ranching construction system based on an offshore wind farm includes a wind turbine generator 1 and an aquaculture cage unit 3, as well as a floating platform 2. The wind turbine generator 1 is fixedly installed on the floating platform 2. The aquaculture cage unit 3 is connected to the floating platform 2 via an adaptive elastic suspension system 4. The adaptive elastic suspension system 4 includes a sensor control unit 41, a mode switching actuator 42, and an elastic damping component 43. The sensor control unit 41 is used to monitor the vibration state of the floating platform 2, and the mode switching actuator 42 is communicatively connected to the sensor control unit 41 to switch between rigid connection and elastic suspension states. This invention solves the structural conflict problem caused by the simple superposition of offshore wind power and marine ranching by integrating the wind turbine generator, floating platform, and aquaculture cage unit into a single system and introducing an adaptive elastic suspension system. This invention achieves a leap from "passive interference resistance" to "active interference avoidance." Traditional offshore structures primarily rely on enhancing their own rigidity to resist the impact of wind and waves. However, this invention, through a sensor control unit 41 and a mode-switching actuator 42, enables the aquaculture cage unit 3 to intelligently switch between rigid connection and elastic suspension states. Under normal sea conditions, the rigid connection ensures the overall stability of the entire system; under severe sea conditions, the elastic suspension state not only effectively isolates the severe vibrations transmitted to the cage from the wind turbine generator 1 and the floating platform 2, but its damping effect also acts as a "dynamic vibration absorber," absorbing some of the vibration energy, thereby improving the operational stability of the wind turbine generator in waves.

[0025] Specifically, the sensing control unit 41 includes a platform vibration sensing module 411, a connection status sensing module 412, and an environmental sensing module 413. The platform vibration sensing module 411 includes an accelerometer and a displacement meter mounted on the floating platform 2 to monitor the vibration frequency and amplitude of the floating platform 2. The connection status sensing module 412 includes a displacement sensor and a force sensor mounted on the adaptive elastic suspension system 4 to monitor the relative displacement, relative velocity, and connector load between the aquaculture cage unit 3 and the floating platform 2. The environmental sensing module 413 includes a wave radar and an anemometer to predict upcoming wave impacts. The preset threshold includes single or multiple judgment conditions related to the heave amplitude, roll / pitch angle, or vibration acceleration of the floating platform 2. Most importantly, the platform vibration sensing module 411 monitors the vibration frequency and amplitude of the floating platform 2 in real time. When it determines that the vibration state is close to the preset danger threshold (i.e., it may cause system resonance), it will immediately instruct the mode switching actuator 42 to release the rigid connection between the aquaculture cage unit 3 and the floating platform 2, so that it enters the elastic suspension state. This instantly changes the dynamic model and vibration transmission path of the entire system, destroying the core condition for resonance to occur—the matching of the excitation frequency and the natural frequency of the structure, thereby achieving active avoidance of resonance.

[0026] Specifically, the mode switching actuator 42 is configured to: maintain a rigid or quasi-rigid connection between the aquaculture cage unit 3 and the floating platform 2 when the vibration state is below the preset threshold; and release the rigid or quasi-rigid connection when the vibration state is above the preset threshold, allowing the aquaculture cage unit 3 to enter an elastic suspension state. The specific value of the preset threshold is determined comprehensively based on the structural dynamic characteristics of the floating platform 2 (such as heave amplitude, roll / pitch angle, and vibration acceleration), the stress tolerance range of the organisms in the aquaculture cage unit 3, and the short-term wave prediction information from the environmental sensing module 413. The system evaluates the above parameters in real time through the sensor control unit 41. When the monitoring data indicates that the vibration state is about to endanger structural safety, significantly affect aquaculture efficiency, or foreshadow extreme wave conditions, it is determined that the preset threshold has been exceeded, and mode switching is immediately triggered. This multi-factor integrated intelligent judgment mechanism ensures that the system provides the optimal growth environment for the aquaculture organisms while ensuring the safety of the structure.

[0027] Specifically, the mode switching actuator 42 includes a controller and an actuator. The controller is communicatively connected to the sensing control unit 41, and the actuator is at least one of a hydraulic locking cylinder, a pneumatic locking cylinder, or an electromagnetic locking pin.

[0028] The elastic damping assembly 43 includes an elastic element and a damping element arranged in parallel. The elastic element is at least one of a helical spring, an air spring, and an elastic rubber component. The damping element is at least one of a hydraulic damper, a viscous fluid damper, and an electromagnetic damper.

[0029] In the rigid / quasi-rigid connection state, the mode switching actuator 42 (e.g., the piston rod of the hydraulic locking cylinder extends, or the pin of the electromagnetic locking stop pin is inserted) physically forms a rigid connection point, rigidly or quasi-rigidly locking the cage frame 31 of the aquaculture cage unit 3 to the floating platform 2. The elastic element of the elastic damping assembly 43 (e.g., a coil spring) is in an "idle" state in this state, hardly participating in the main force bearing, thus being protected and avoiding fatigue caused by continuous operation. In the elastic suspension state, the mode switching actuator 42 is released (e.g., the piston rod of the hydraulic locking cylinder retracts, or the pin of the electromagnetic locking stop pin is withdrawn). At this time, the elastic element of the elastic damping assembly 43 becomes the main connection and force transmission component between the two. The vibration energy of the floating platform 2 is no longer directly transmitted to the aquaculture cage unit 3, but is absorbed through the elastic deformation of the elastic damping assembly 43, and the kinetic energy is converted into heat energy and dissipated through its damping effect, thereby achieving vibration isolation and protection for the aquaculture cage unit 3.

[0030] Specifically, the aquaculture cage unit 3 includes a cage frame 31 and a net 32 ​​fixed thereon, the net 32 ​​being a spirally wound curved structure. The net 32 ​​is supported and fixed by a spiral skeleton 33, the spiral angle of which is adjustable.

[0031] This invention integrates the adaptive elastic suspension system 4 with the adjustable helix angle netting 32 into a cohesive design, achieving adaptive mode switching and netting self-cleaning functions under different sea conditions. When the sensor control unit 41 detects that the vibration state of the floating platform 2 exceeds a preset threshold, the mode switching actuator 42 immediately activates, putting the aquaculture cage unit 3 into an elastic suspension state. Based on this state signal, the adjustment control mechanism 34 can be automatically or confirmed to initiate the netting 32 self-cleaning procedure. When the cleaning procedure is initiated in the elastic suspension state, the system drives the helical frame 33 to perform periodic reciprocating motion. At this time, the aquaculture cage unit 3 has a certain degree of floating freedom, which, combined with the active drive of the helical frame 33, produces an excellent synergistic cleaning effect: the netting 32 generates complex multi-dimensional fluctuations and shaking, which can effectively detach attached materials and enhance the local shear force of the water flow on the netting surface, thereby thoroughly washing away the loosened attached materials. When the vibration state subsides and stabilizes, the system controls the aquaculture cage unit 3 to restore rigid connection, while adjusting the helix angle to a suitable angle for the aquaculture organisms to inhabit, forming a stable aquatic environment.

[0032] A control method for a marine ranching construction system based on an offshore wind farm includes the following steps: monitoring the vibration state of a floating platform 2 and determining whether the vibration state exceeds a preset threshold; when the vibration state exceeds the preset threshold, a control mode switching actuator 42 disconnects the rigid or quasi-rigid connection between the aquaculture cage unit 3 and the floating platform 2, causing the aquaculture cage unit 3 to enter an elastic suspension state; when the vibration state falls below the preset threshold and remains there for a predetermined time, the control mode switching actuator 42 is used to restore the rigid or quasi-rigid connection.

[0033] A method for supporting and adjusting a net includes: supporting the net 32 ​​via a spiral frame 33; adjusting the helix angle of the spiral frame 33 to change the curved shape and water flow adaptability of the net 32. The adjustment of the helix angle is based on factors such as water flow velocity, fish activity within the net cage, or attachments to the net. The method also includes a self-cleaning step: controlling the aquaculture net cage unit 3 to enter an elastic suspension state; driving the spiral frame 33 to perform periodic reciprocating motion; and dynamically adjusting the helix angle during the reciprocating motion to change the shaking mode of the net 32.

[0034] The embodiments and / or implementation methods described above are merely preferred embodiments and / or implementation methods for implementing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any way. Any person skilled in the art may make some modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but these should still be regarded as the technology or embodiments that are substantially the same as the present invention.

[0035] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A marine ranching construction system based on an offshore wind farm, comprising a wind turbine generator set (1) and a farming net cage unit (3), characterized in that, Also include a floating platform (2), the wind turbine generator set (1) is fixedly installed on the floating platform (2), the aquaculture net cage unit (3) is connected with the floating platform (2) through adaptive elastic suspension system (4), the adaptive elastic suspension system (4) includes sensing control unit (41), mode switching actuator (42) and elastic damping assembly (43), the sensing control unit (41) is used for monitoring the vibration state of the floating platform (2), the mode switching actuator (42) is connected with the sensing control unit (41), for realizing the switch of rigid connection and elastic suspension state.

2. The mariculture construction system of claim 1, wherein The sensing control unit (41) is provided with platform vibration sensing module (411), connection state sensing module (412) and environment perception module (413), the platform vibration sensing module (411) includes accelerometer and displacement meter installed on the floating platform (2), the connection state sensing module (412) includes displacement sensor and force sensor installed on the adaptive elastic suspension system (4), and the environment perception module (413) includes wave radar and anemograph.

3. The mariculture construction system of claim 1, wherein, The mode switching actuator (42) is configured to: when the vibration state is lower than the preset threshold, the aquaculture net cage unit (3) is kept rigid or quasi-rigid connection with the floating platform (2); when the vibration state is higher than the preset threshold, the rigid or quasi-rigid connection is released, and the aquaculture net cage unit (3) enters the elastic suspension state.

4. The mariculture construction system of claim 1, wherein The mode switching actuator (42) includes a controller and an actuator, the controller is connected with the sensing control unit (41), and the actuator is at least one of a hydraulic locking cylinder, a pneumatic locking cylinder or an electromagnetic locking pin.

5. The mariculture construction system of claim 1, wherein The elastic damping assembly (43) includes parallelly connected elastic elements and damping elements, the elastic elements are at least one of helical spring, air spring and elastic rubber member, and the damping elements are at least one of hydraulic damper, viscous fluid damper and electromagnetic damper.

6. The mariculture construction system of claim 1, wherein The aquaculture net cage unit (3) includes a net cage frame (31) and a netting (32) fixed thereon, and the netting (32) is a spiral winding curved surface structure.

7. The method of establishing a marine ranching system according to claim 6, wherein The netting (32) is supported and fixed by a spiral skeleton (33), and the spiral angle of the spiral skeleton (33) is adjustable.

8. A control method of a marine ranching system construction system based on an offshore wind farm, which employs the system according to any one of claims 1 to 7, characterized by The method comprises the following steps: Monitoring the vibration state of the floating platform (2), determining whether the vibration state exceeds the preset threshold, when the vibration state exceeds the preset threshold, controlling the mode switching actuator (42) to release the rigid or quasi-rigid connection between the aquaculture net cage unit (3) and the floating platform (2), so that the aquaculture net cage unit (3) enters the elastic suspension state, and when the vibration state falls below the preset threshold and lasts for a predetermined time, the mode switching actuator (42) is controlled to restore the rigid or quasi-rigid connection.

9. A method of supporting and adjusting a netting using the system of claim 7, characterized in that, The method comprises: The net cover (32) is supported by a helical skeleton (33), and the helical pitch of the helical skeleton (33) is adjusted to change the curved shape of the net cover (32) and the adaptability to water flow.

10. The method of supporting and adjusting a netting according to claim 9, wherein, The self-cleaning step is also included, that is, the aquaculture net cage unit (3) is controlled to enter an elastic suspension state, the helical skeleton (33) is driven to perform periodic reciprocating motion, and the helical pitch is dynamically adjusted during the reciprocating motion to change the shaking mode of the net cover (32).

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