A floating semi-submersible platform and offshore power generation system

Abstract

This application discloses an offshore floating semi-submersible platform and an offshore power generation system. The offshore floating semi-submersible platform provided by this application includes a platform body equipped with wind turbine components and photovoltaic components to achieve wind and solar complementary power generation. A heave assembly is provided below the platform body, which includes at least two different sizes of heave plates and forms at least two moon pool structures, which together constitute a damping coupling system. The differentiated heave plates provide a graded response to broadband waves, and the moon pool structure adds additional mass and radiation damping, thereby continuously consuming wave energy, significantly reducing the platform's heave response, and improving operational stability. The photovoltaic components include fixed photovoltaic panels and telescopic photovoltaic panels. The fixed photovoltaic panels are located on the top surface of the platform body, and the telescopic photovoltaic panels can switch between a retracted state and an extended state, effectively increasing the photovoltaic power generation area and improving power generation efficiency.

Description

Technical Field

[0001] This application relates to the field of offshore power generation technology, and more specifically, to an offshore floating semi-submersible platform and an offshore power generation system. Background Technology

[0002] Driven by the continued growth in global demand for renewable energy, offshore wind power is rapidly expanding into deep-sea areas. Deep-sea regions offer richer and more stable wind energy resources, possessing enormous potential for large-scale development. However, compared to nearshore areas, the deep-sea environment is harsher, with strong combined effects of wind, waves, and currents. This makes traditional semi-submersible platforms prone to significant heave responses under environmental loads, which not only affects power generation efficiency but also increases the risk of structural fatigue, resulting in lower operational stability.

[0003] In conclusion, improving the operational stability and power generation efficiency of semi-submersible platforms is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide an offshore floating semi-submersible platform and an offshore power generation system to improve the operational stability and power generation efficiency of the semi-submersible platform.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A floating semi-submersible platform includes: a platform body equipped with a wind turbine assembly and a photovoltaic assembly; wherein a heave assembly is disposed below the platform body, the heave assembly comprising at least two heave plates of different sizes forming at least two moon pool structures; the photovoltaic assembly includes a fixed photovoltaic panel and a telescopic photovoltaic panel, the fixed photovoltaic panel being fixedly disposed on the top surface of the platform body, and the telescopic photovoltaic panel having a retracted state and an extended state; in the retracted state, the telescopic photovoltaic panel is located inside the platform body; in the extended state, the telescopic photovoltaic panel extends out of the platform body and forms a continuous photovoltaic plane with the fixed photovoltaic panel.

[0007] In some embodiments, the platform body has an equilateral triangular structure and a box-shaped structure, with columns connected to all three vertices of the platform body; a support base is provided in the central area of ​​the platform body, the support base is used to support the wind turbine assembly, and the support base is fixedly connected to the platform body through a support rod.

[0008] In some embodiments, the sway assembly includes: three first sway plates, each corresponding to the bottom surface of one of the three columns, with a first connecting rod fixedly connected between adjacent first sway plates; and three second sway plates, each corresponding to the midpoint of one of the three first connecting rods, with a second connecting rod fixedly connected between adjacent second sway plates, to enclose and form four moon pool structures.

[0009] In some embodiments, both the first and second sway plates are regular hexagonal structures, and the size of the second sway plate is smaller than the size of the first sway plate.

[0010] In some embodiments, the top surface of the second sway plate is provided with three supporting diagonal rods, each corresponding to one of the second sway plate; the two ends of the supporting diagonal rods are respectively fixedly connected to the second sway plate and the supporting base.

[0011] In some embodiments, there are three sets of telescopic photovoltaic panels, and the three sets of telescopic photovoltaic panels correspond one-to-one with the three sides of the platform body; each set of telescopic photovoltaic panels is movably connected to a scissor lift assembly, and the scissor lift assembly drives the telescopic photovoltaic panel to switch between a retracted state and an extended state.

[0012] In some embodiments, a slide rail is provided on the outer inner wall of the platform body; the scissor lift assembly includes a drive push rod and a scissor link, the drive push rod is fixedly connected to the slide rail, the extension and retraction direction of the drive push rod extends along the length direction of the slide rail, and the two ends of the scissor link are respectively movably connected to the two ends of the drive push rod and the telescopic photovoltaic panel.

[0013] In some embodiments, the side of the column connected to the platform body is a vertical plane, the side of the column facing outward is a smooth cylindrical surface, and the fixed photovoltaic panel is provided on the top surface of the column.

[0014] In some embodiments, the wind turbine assembly includes a wind turbine body and a tower; the wind turbine body is mounted on top of the tower via a yaw system, and the bottom of the tower is fixedly mounted on the support base.

[0015] An offshore power generation system includes a floating semi-submersible platform as described above.

[0016] The floating semi-submersible platform provided in this application includes a platform body equipped with wind turbine components and photovoltaic components to achieve combined wind and photovoltaic power generation and improve utilization efficiency. Below the platform body, a heave assembly is installed, comprising at least two different sizes of heave plates forming at least two moon pool structures. The heave plates of different sizes and the moon pool structures form a synergistic damping coupling system. The differentiated sizes of the heave plates generate a graded response to broadband waves, and the moon pool structures significantly increase the platform's added mass and radiation damping, enabling the platform to adapt to a wider range of wave frequencies and continuously dissipate wave energy, greatly reducing the platform's operating costs. The improved heave response enhances the platform's operational stability. Furthermore, the photovoltaic modules include fixed photovoltaic panels and telescopic photovoltaic panels. The fixed photovoltaic panels are fixedly installed on the top surface of the platform body, while the telescopic photovoltaic panels have a retracted state and an extended state. In the retracted state, the telescopic photovoltaic panels are located inside the platform body, allowing them to be stored inside the platform body in extreme weather conditions to provide effective shading. In normal operation, they can be converted to the extended state, where the telescopic photovoltaic panels extend out of the platform body and form a continuous photovoltaic plane with the fixed photovoltaic panels, effectively improving the utilization rate of the upper space of the platform, significantly increasing the photovoltaic power generation area, and improving power generation efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or 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 only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of a floating semi-submersible platform provided in an embodiment of this application;

[0019] Figure 2 A front view schematic diagram of a floating semi-submersible platform provided in an embodiment of this application;

[0020] Figure 3 A schematic diagram of the structure of the platform body and heave components in a floating semi-submersible platform provided in an embodiment of this application;

[0021] Figure 4 for Figure 3 A top view of the platform body and heave components shown;

[0022] Figure 5 This is a schematic diagram of the scissor lift assembly in a floating semi-submersible platform provided in an embodiment of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100-Platform body, 101-Slide rail, 110-Column, 120-Support base, 130-Support link, 131-Guide rail;

[0025] 210 - Wind turbine body, 220 - Tower;

[0026] 310-Fixed photovoltaic panel, 320-Telescopic photovoltaic panel, 330-Scissor lift assembly, 331-Drive push rod, 332-Scissor lift linkage;

[0027] 410 - First heave plate, 420 - First connecting rod, 430 - Second heave plate, 440 - Second connecting rod, 450 - Supporting diagonal rod. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The terminology used in the following embodiments is for the purpose of describing specific embodiments only and is not intended to be a limitation of this application. As used in the specification and appended claims of this application, the singular expressions "a," "an," "the," "the," "the," and "this" are intended to also include expressions such as "one or more," unless the context clearly indicates otherwise. It should also be understood that in the embodiments of this application, "one or more" refers to one, two, or more; "and / or" describes the relationship between related objects, indicating that three relationships may exist; for example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0030] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0031] The "multiple" mentioned in the embodiments of this application refers to two or more. It should be noted that in the description of the embodiments of this application, terms such as "first" and "second" are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0032] The “plane” referred to in this application is a “plane that is substantially parallel to the horizontal plane” in actual operation.

[0033] like Figure 1 As shown in the embodiment of this application, the offshore floating semi-submersible platform includes a platform body 100, which is equipped with wind turbine components and photovoltaic components to realize combined power generation of wind and photovoltaic energy and improve the utilization efficiency of the semi-submersible platform.

[0034] The platform body 100 is equipped with a heave assembly below it. The heave assembly includes at least two different sizes of heave plates and forms at least two moon pool structures. The heave plates of different sizes and the moon pool structures form a synergistic damping coupling system. The differentiated size of the heave plates generates a graded response to broadband waves. The moon pool structure significantly increases the platform's added mass and radiation damping, enabling the platform to adapt to a wider range of wave frequencies and continuously dissipate wave energy. This greatly reduces the platform's heave response and improves the platform's operational stability, thereby improving the stability of wind turbine components in capturing wind energy during operation and increasing the power generation efficiency of wind turbine components.

[0035] Furthermore, the photovoltaic module includes a fixed photovoltaic panel 310 and a telescopic photovoltaic panel 320. The fixed photovoltaic panel 310 is fixedly installed on the top surface of the platform body 100 to generate photovoltaic power, and the telescopic photovoltaic panel 320 has a retracted state and an extended state.

[0036] In its stowed state, the telescopic photovoltaic panel 320 is located inside the platform body 100, so that when the platform needs to be towed or transported or in extreme weather, the telescopic photovoltaic panel 320 can be completely retracted into the platform body 100 to provide effective shading for the telescopic photovoltaic panel 320 and reduce the risk of damage to the telescopic photovoltaic panel 320.

[0037] In normal operation, it can be converted into an extended state, so that the telescopic photovoltaic panel 320 extends out of the platform body 100 and forms a continuous photovoltaic surface with the fixed photovoltaic panel 310, which improves the utilization rate of the upper area of ​​the platform, significantly increases the photovoltaic power generation area, and improves the power generation efficiency.

[0038] It should be noted that heave response refers to the dynamic response of a floating structure at sea to the action of waves in the vertical direction. Specifically, when waves pass over a floating platform, the wave crests and troughs alternately act on the bottom of the platform, causing the platform to rise and sink periodically. This reciprocating motion in the vertical direction is called heave motion, and the amplitude, velocity, acceleration, and related dynamic characteristics of the platform's heave motion are collectively referred to as heave response.

[0039] For offshore floating semi-submersible platforms, heave response is a key indicator affecting their motion stability and operational performance. Excessive heave response can lead to the following problems: reduced power generation efficiency, as the platform's violent up-and-down motion is transmitted to the onboard wind turbine, causing misalignment of the rotor and increased blade vibration, thus reducing wind energy capture efficiency. It can also affect the solar panel's angle to the sun, reducing photovoltaic power generation; increased structural fatigue load, as frequent heave motion generates alternating stress on the platform structure, mooring system, and wind turbine tower, accelerating fatigue damage and shortening equipment lifespan; and compromised operational safety, as large heaves in extreme sea conditions may cause platform instability, capsizing, or impact with mooring cables, threatening overall safety.

[0040] It should be noted that the moon pool structure refers to a vertical cavity or open area that runs through the interior of an offshore floating platform and is connected to seawater at both ends. The moon pool structure has a significant impact on the hydrodynamic performance of the platform. It can increase the added mass. When the platform heaves in waves, the water column inside the moon pool does not move rigidly with the platform, but will generate relative motion with the platform. This relative motion will increase the effective mass of the seawater displaced by the platform, that is, the added mass. The increase in added mass will increase the natural heave period of the platform, making it far away from the period range of common waves, thereby avoiding resonance. It also generates radiation damping. The oscillating motion of the water column in the moon pool will radiate waves to the surrounding sea area, carrying away energy. This energy dissipation mechanism is manifested as radiation damping. The greater the radiation damping, the faster the energy of the platform's heave motion is consumed, and the more rapidly the heave amplitude decays. Furthermore, it can form a dissipative interface of alternating water and air. In the moon pool, as the platform moves up and down, the water column forms a piston-like motion in the cavity, and its surface will continuously come into alternating contact with the air, generating vortices, breaking waves, and fluid friction. These nonlinear effects further convert wave kinetic energy into thermal energy and turbulent energy, enhancing the damping effect.

[0041] In this application, such as Figures 1-3 As shown, the platform body 100 has an equilateral triangular structure, and in order to provide storage space for the telescopic photovoltaic panel 320, the platform body 100 has a box-type structure so that the telescopic photovoltaic panel 320 can be stored inside the platform body 100.

[0042] Each of the three vertices of the platform body 100 is connected to a column 110, which can be fixed by welding to improve the connection strength and stability, so as to form a stable triangular structure and further improve the stability of the platform.

[0043] A support base 120 is provided in the central area of ​​the platform body 100. The support base 120 is used to support the wind turbine assembly, and the support base 120 is fixedly connected to the platform body 100 through the support connecting rod 130 to improve the connection strength and provide stable support for the wind turbine assembly.

[0044] Specifically, such as Figure 1 As shown, the wind turbine assembly includes a wind turbine body 210 and a tower 220. The wind turbine body 210 is installed on the top of the tower 220 via a yaw system, and the bottom of the tower 220 is fixedly installed on a support base 120 to ensure stable support for the wind turbine body 210 and to ensure stable operation of the wind turbine body 210.

[0045] It should be noted that, in practice, a power generation system is integrated inside the tower 220, which can convert the wind energy of the wind turbine body 210 into electrical energy, and transmit the generated electrical energy to the submarine power grid through the cable channel laid in the tower 220 and the platform body 100.

[0046] like Figures 3-4 As shown, the sway assembly includes a first sway plate 410 and a second sway plate 430. There are three first sway plates 410, which are respectively disposed on the bottom surfaces of the three columns 110. Specifically, they can be fixed by welding to improve the connection strength. Adjacent first sway plates 410 are fixedly connected by first connecting rods 420, so that the three first sway plates 410 and the three first connecting rods 420 form an equilateral triangle structure corresponding to the platform body 100 to improve the stability of the platform.

[0047] There are also three second heave plates 430, each corresponding to one of the midpoints of the three first links 420. Adjacent second heave plates 430 are fixedly connected by second links 440, forming an equilateral triangle structure. The first heave plate 410, first link 420, second heave plate 430, and second link 440 enclose a four-moon pool structure. This four-moon pool structure synergistically increases the added mass and radiation damping, effectively suppressing the heave response, and generates coupling dissipation through multi-pool connectivity. The multi-pool coupling mechanism, which broadens the damping frequency band, avoids the limitation of a single-size moon pool being effective only in a narrow frequency range. This allows the platform to maintain a high damping level across a wide wave spectrum, significantly improving its adaptability to complex deep-sea conditions. Furthermore, the four moon pools provide a more stable base environment for the wind turbine components, reducing wind turbine blade deviation and fatigue load, and improving wind energy capture efficiency. At the same time, it creates a more stable planar attitude for the photovoltaic modules, which helps the photovoltaic panels maintain the optimal solar angle, resulting in a significant improvement in overall power generation efficiency and an extension of equipment life.

[0048] In this application, such as Figures 3-4 As shown, both the first heave plate 410 and the second heave plate 430 are regular hexagonal structures, and the size of the second heave plate 430 is smaller than that of the first heave plate 410. The regular hexagonal structure increases the bottom coverage area and reduces ineffective water gaps. Furthermore, by using heave plates of different sizes, the larger first heave plate 410 can cope with lower frequency waves and effectively dampen long-period swells, while the smaller second heave plate 430 can cope with higher frequency waves and significantly dissipate eddy currents in short-period wind waves. This multi-level collaborative coverage of a wide frequency band further improves the stability of the platform.

[0049] like Figure 3As shown, three support rods 450 are provided on the top surface of the second sway plate 430, each corresponding to one of the three second sway plates 430. The two ends of the support rods 450 are fixedly connected to the second sway plate 430 and the support base 120, respectively. Specifically, they can be fixed by welding to further enhance the connection strength and stability of the sway assembly and further improve the stability of the platform.

[0050] like Figures 4-5 As shown, there are three sets of telescopic photovoltaic panels 320. The three sets of telescopic photovoltaic panels 320 correspond one-to-one with the three sides of the platform body 100. Each set of telescopic photovoltaic panels 320 is movably connected to a scissor lift assembly 330, so that the telescopic photovoltaic panel 320 can be driven to switch between the retracted state and the extended state through the scissor lift assembly 330.

[0051] Among them, such as Figure 3 As shown, a guide rail 131 is provided on the inner wall of the support link 130. The telescopic photovoltaic panel 320 slides with the guide rail 131 so that the telescopic photovoltaic panel 320 moves back and forth along the guide rail 131 to improve the stability of the telescopic photovoltaic panel 320 during the storage and extension process.

[0052] like Figure 5 As shown, a slide rail 101 is provided on the inner wall of the outer side of the platform body 100. The scissor lift assembly 330 includes a drive push rod 331 and a scissor link 332. The drive push rod 331 is fixedly connected to the slide rail 101. The extension and retraction direction of the drive push rod 331 extends along the length direction of the slide rail 101. The two ends of the scissor link 332 are respectively movably connected to the two ends of the drive push rod 331 and the telescopic photovoltaic panel 320. Specifically, both ends of the scissor link 332 can rotate and slide around the two ends of the drive push rod 331 and the side wall of the telescopic photovoltaic panel 320, so that the extension and retraction of the drive push rod 331 can drive the scissor link 332 to rise and fall, so that the scissor link 332 can drive the telescopic photovoltaic panel 320 to be retracted or extended.

[0053] In this application, such as Figure 3 As shown, the side of the column 110 connected to the platform body 100 is a vertical plane, and the other sides facing outward are smooth cylindrical surfaces. This allows the smooth cylindrical surfaces to optimize wave turbulence characteristics, effectively reduce the overall wave load on the platform, and reduce the mutual interference of hydrodynamics between the columns 110 through the vertical plane on the inner side, further improving the stability of the platform.

[0054] Furthermore, such as Figure 3 As shown, a fixed photovoltaic panel 310 is also installed on the top surface of the column 110 to further expand the photovoltaic power generation area and improve power generation efficiency.

[0055] It should be noted that in this application, the photovoltaic module also includes an inverter and a controller. The inverter and controller are installed together with the photovoltaic panel on the top surface of the platform body 100, the top surface of the column 110, and the telescopic photovoltaic panel 320, so that the photovoltaic module is located on the upper part of the platform, away from the splash zone, effectively avoiding wave splash and seawater erosion, thereby ensuring the power generation efficiency of the system and extending its service life.

[0056] The floating semi-submersible platform provided in this application embodiment, by setting up a heave assembly, which includes at least two heave plates of different sizes forming at least two moon pool structures, forms a synergistic damping coupling system through the heave plates of different sizes and the moon pool structures. The differentiated sizes of the heave plates generate a graded response to broadband waves, and the moon pool structures significantly increase the platform's added mass and radiation damping, enabling the platform to adapt to a wider range of wave frequencies and continuously dissipate wave energy. This greatly reduces the platform's heave response, improves the platform's operational stability, and thus improves the stability of wind turbine components in capturing wind energy during operation, thereby increasing the power generation efficiency of the wind turbine components.

[0057] Furthermore, by setting up a fixed photovoltaic panel 310 and a telescopic photovoltaic panel 320, the telescopic photovoltaic panel 320 extends out of the platform body 100 and forms a continuous photovoltaic surface with the fixed photovoltaic panel 310 in the extended state, thereby improving the utilization rate of the platform area, significantly increasing the photovoltaic power generation area, and improving the power generation efficiency.

[0058] This application also provides an offshore power generation system, which includes the offshore floating semi-submersible platform described in the above embodiments.

[0059] Since the aforementioned floating semi-submersible platform has the aforementioned technical effects, and the aforementioned offshore power generation system includes the aforementioned floating semi-submersible platform, the aforementioned offshore power generation system also has the corresponding technical effects, which will not be elaborated here.

[0060] The above description of the embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A floating semi-submersible platform for offshore use, characterized in that, include: The platform body (100) is equipped with wind turbine components and photovoltaic components; Among them, a heave assembly is provided below the platform body (100), the heave assembly includes at least two different sizes of heave plates and forms at least two moon pool structures; The photovoltaic module includes a fixed photovoltaic panel (310) and a telescopic photovoltaic panel (320). The fixed photovoltaic panel (310) is fixedly installed on the top surface of the platform body (100), and the telescopic photovoltaic panel (320) has a retracted state and an extended state. In the retracted state, the telescopic photovoltaic panel (320) is located inside the platform body (100); In the extended state, the telescopic photovoltaic panel (320) extends out of the platform body (100) and forms a continuous photovoltaic plane with the fixed photovoltaic panel (310).

2. The offshore floating semi-submersible platform according to claim 1, characterized in that, The platform body (100) has an equilateral triangle structure and a box-shaped structure. Each of the three vertices of the platform body (100) is connected to a column (110). The platform body (100) has a support base (120) in the central area. The support base (120) is used to support the wind turbine assembly. The support base (120) is fixedly connected to the platform body (100) through a support link (130).

3. The offshore floating semi-submersible platform according to claim 2, characterized in that, The heave component includes: The first sway plate (410) consists of three plates, each of which is disposed on the bottom surface of one of the three columns (110). A first connecting rod (420) is fixedly connected between adjacent first sway plates (410). The second sway plate (430) consists of three parts, with each part corresponding to the midpoint of one of the three first connecting rods (420). Adjacent second sway plates (430) are fixedly connected to each other by a second connecting rod (440) to enclose and form four moon pool structures.

4. The offshore floating semi-submersible platform according to claim 3, characterized in that, Both the first helical plate (410) and the second helical plate (430) are regular hexagonal structures, and the size of the second helical plate (430) is smaller than that of the first helical plate (410).

5. The offshore floating semi-submersible platform according to claim 3, characterized in that, The top surface of the second sway plate (430) is provided with three support diagonal rods (450), which correspond one-to-one with the second sway plate (430); The two ends of the support rod (450) are respectively fixedly connected to the second sway plate (430) and the support base (120).

6. The offshore floating semi-submersible platform according to claim 2, characterized in that, There are three sets of telescopic photovoltaic panels (320), and the three sets of telescopic photovoltaic panels (320) correspond one-to-one with the three sides of the platform body (100); Each of the telescopic photovoltaic panels (320) is movably connected to a scissor lift assembly (330), which drives the telescopic photovoltaic panel (320) to switch between a retracted state and an extended state. The inner wall of the support link (130) is provided with a guide rail (131), and the telescopic photovoltaic panel (320) slides in cooperation with the guide rail (131).

7. The offshore floating semi-submersible platform according to claim 6, characterized in that, The platform body (100) is provided with a slide rail (101) on the outer inner wall surface. The scissor lift assembly (330) includes a drive push rod (331) and a scissor link (332). The drive push rod (331) is fixedly connected to the slide rail (101). The extension and retraction direction of the drive push rod (331) extends along the length direction of the slide rail (101). The two ends of the scissor link (332) are respectively movably connected to the two ends of the drive push rod (331) and the telescopic photovoltaic panel (320).

8. The offshore floating semi-submersible platform according to claim 2, characterized in that, The side of the column (110) connected to the platform body (100) is a vertical plane, the side of the column (110) facing outward is a smooth cylindrical surface, and the top surface of the column (110) is provided with the fixed photovoltaic panel (310).

9. The offshore floating semi-submersible platform according to claim 2, characterized in that, The wind turbine assembly includes a wind turbine body (210) and a tower (220). The wind turbine body (210) is installed on the top of the tower (220) via a yaw system, and the bottom of the tower (220) is fixedly installed on the support base (120).

10. An offshore power generation system, characterized in that, Including the offshore floating semi-submersible platform as described in any one of claims 1-9.

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