Omni-directional energy-obtaining wind-light-wave multi-energy complementary offshore power supply system

Abstract

An octagonal semi-submersible base body module is used for achieving floating of the offshore power supply system, and a wind power generation module, a photovoltaic power generation module and a wave energy power generation module are used for achieving wind power generation, photovoltaic power generation and wave energy power generation respectively. The mooring module is used for achieving offshore positioning of the offshore power supply system. According to the scheme, three ocean clean renewable energy sources including wind energy, solar energy and wave energy are integrated into the same power generation platform, a multi-energy cooperative and complementary energy system is constructed, and the power generation stability and the total output power of the whole platform are remarkably improved. In addition, a structural integration design is adopted, the platform space utilization rate and the system integration degree are remarkably improved, and the construction cost and the operation and maintenance complexity are effectively reduced. The platform has good ocean adaptability and module expansion capability, and is suitable for various application scenes such as deep and far sea power supply, ocean observation, marine ranching and the like.

Description

Technical Field

[0001] The present invention belongs to the field of marine renewable energy power generation, and in particular relates to an omnidirectional wind, solar and wave multi-energy complementary marine power supply system. Background Art

[0002] With the ongoing adjustments to the global energy mix and the proposed goals of achieving carbon peak and carbon neutrality, the development and utilization of renewable energy has become a key development direction. Marine renewable energy resources are abundant and diverse, primarily including wind, solar, and wave energy. Offshore wind and photovoltaic technologies are relatively mature, boasting high power generation efficiency and extensive engineering application experience. Wave energy, owing to its high energy density, continuous operation day and night, and strong complementarity with wind and solar resources, has become a hot topic in marine energy utilization research in recent years.

[0003] Synergizing wind, solar, and wave energy to create a unified energy collection, management, and output system, creating a "multi-energy complementary" power generation model, can significantly improve the stability and resilience of offshore energy systems to environmental fluctuations, while reducing energy storage system capacity and overall construction costs, offering promising application prospects. However, existing multi-energy complementary offshore power generation platforms still face numerous challenges. For example, they suffer from complex system structures, poor coordination, high development costs, and low versatility, making them difficult to scale and rapidly deploy. Furthermore, all three offshore resources—wind, solar, and wave—change direction over time, and most existing offshore energy devices are designed for unidirectional energy capture, making them unsuitable for the actual marine environment. Therefore, there is an urgent need to develop a new omnidirectional capture multi-energy complementary offshore power generation platform with high structural integration, rational modular design, intelligent operation and control, and strong adaptability. This will improve the operational efficiency and engineering applicability of marine energy systems and meet the practical needs of green, autonomous energy supply systems for multiple marine scenarios. Summary of the Invention

[0004] In view of the above problems, the object of the present invention is to provide an omnidirectional wind, solar and wave multi-energy complementary offshore power supply system.

[0005] The specific technical solutions for achieving the purpose of the present invention are as follows:

[0006] An omnidirectional wind, solar and wave multi-energy complementary offshore power supply system includes an octagonal semi-submersible base module, a wind power generation module, a photovoltaic power generation module, a wave energy generation module and a mooring module;

[0007] The octagonal semi-submersible base module is used to realize the floating of the offshore power supply system; the wind power generation module, photovoltaic power generation module, and wave power generation module are used to realize wind power generation, photovoltaic power generation, and wave power generation respectively; and the mooring module is used to realize the offshore positioning of the offshore power supply system;

[0008] The wind power generation module and the photovoltaic power generation module are arranged above the octagonal semi-submersible base module, the wave energy power generation module is arranged on the octagonal semi-submersible base module, and a mooring module is arranged below the octagonal semi-submersible base module.

[0009] Furthermore, the octagonal semi-submersible base module includes a column-type buoy, a support rod, and a damping plate;

[0010] The octagonal semi-submersible base module is octagonal in shape as a whole and is formed by octagonal column-type buoys connected in series through support rods;

[0011] A damping plate is provided at the bottom of each column-type buoy to increase the contact area with water.

[0012] Furthermore, the column-type buoy is divided from bottom to top into a bottom buoyancy cabin, a middle equipment cabin, and an upper office cabin;

[0013] When the floating state of the offshore power supply system needs to be adjusted, it is achieved by injecting or releasing water into the bottom buoyancy tank.

[0014] Furthermore, the wind power generation module includes a wind turbine impeller, a wind turbine nacelle and a wind turbine tower;

[0015] The wind turbine tower is arranged above the center of the octagonal semi-submersible base module, and its bottom passes through the center of the octagonal semi-submersible base module and extends out of the octagonal semi-submersible base module. A wind turbine cabin is arranged on the wind turbine tower, and a wind turbine generator is arranged in the wind turbine cabin and connected to the wind turbine impeller.

[0016] Furthermore, the photovoltaic power generation module includes a solar panel and a vertical support rod;

[0017] A plurality of the vertical support rods are arranged on the octagonal semi-submersible base module to form a vertical support rod array, and the solar panels are arranged on the octagonal semi-submersible base module through the vertical support rod array.

[0018] Furthermore, the wave energy power generation module includes a heaving wave absorbing float;

[0019] The swaying buoy is a circular ring structure mounted on a column-type buoy. A linear motor is installed between the swaying buoy and the column-type buoy. Under the action of waves, the swaying buoy moves vertically along the column-type buoy, thereby driving the linear motor to generate electricity.

[0020] Furthermore, the number of the heave-type wave-absorbing floats is the same as the number of the column-type floats.

[0021] Furthermore, the wave energy power generation module further comprises a rotating wave absorbing float, a rotating rod, a hydraulic cylinder, a piston rod and a fixing frame;

[0022] The fixing frame is arranged on the supporting rod, the hydraulic cylinder is hinged on the fixing frame, and is connected to the rotating rod;

[0023] One side of the piston rod is connected to the rotating rod, and the other side is connected to the hydraulic cylinder. A rotating wave-absorbing float is provided on the rotating rod.

[0024] Under the action of waves, the rotating wave-absorbing float drives the rotating rod connected to it to rotate, thereby driving the piston rod to repeatedly enter and exit the hydraulic cylinder, thereby converting wave energy into electrical energy.

[0025] Furthermore, the heaving wave-absorbing floats and the rotating wave-absorbing floats are evenly arranged circumferentially outside the octagonal semi-submersible base module to absorb the energy of incident waves in all directions.

[0026] Furthermore, the mooring module includes an anchor chain and a seabed anchor block;

[0027] One end of the anchor chain is connected to the bottom end of the column buoy, and the other end of the anchor chain is connected to the seabed anchor block;

[0028] There are multiple anchor chains, which are evenly arranged circumferentially below the octagonal semi-submersible base module.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] (1) The present invention provides an omnidirectional wind, solar, and wave multi-energy complementary offshore power supply system that integrates three clean and renewable marine energy sources: wind, solar, and wave energy, into a single power generation platform, creating a multi-energy synergistic and complementary energy system. These three energy sources exhibit good complementarity across time and climate conditions, enabling continuous and stable power output under varying marine environmental conditions, thereby significantly improving the power generation stability and total output power of the entire platform.

[0031] (2) This invention adopts a structurally integrated design, with each energy system sharing the mooring system and power control system. This significantly improves the platform's space utilization and system integration, while also effectively reducing construction costs and operational complexity. The platform has excellent marine adaptability and modular expansion capabilities, making it suitable for a variety of application scenarios, including deep-sea power supply, ocean observation, and marine ranching.

[0032] (3) The semi-submersible platform of the present invention adopts an octagonal structure, consisting of eight column-type buoys with damping plates installed at the lower ends of the column-type buoys. This design can greatly improve the platform's wave resistance and enhance its stability in the marine environment. In the face of extreme sea conditions such as typhoons, water can be injected into the buoyancy compartments in the column-type buoys to cause the entire platform to submerge. The two wave-absorbing floats also descend into the seawater and lock their movement, ensuring its safety and self-sustainability in extreme sea conditions.

[0033] (4) The present invention uses two types of wave-absorbing floats to capture wave energy, which can adapt to different sea wave parameters and improve energy conversion efficiency. The two types of wave-absorbing floats are evenly arranged along the circumference of the octagonal semi-submerged base and can absorb the energy of incident waves in all directions.

[0034] The present invention will be further described below with reference to specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the three-dimensional structure of the omnidirectional energy-harvesting wind, solar and wave multi-energy complementary offshore power supply system of the present invention.

[0036] Figure 2 It is a schematic top view of the structure of the omnidirectional energy-harvesting wind, solar and wave multi-energy complementary offshore power supply system of the present invention.

[0037] Figure 3 It is a schematic diagram of the vertical wave energy power generation and absorbing float of the present invention.

[0038] Figure 4 It is a schematic diagram of the rotating wave energy power generation and absorbing float of the present invention. DETAILED DESCRIPTION

[0039] Example

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0041] As used in this application and the claims, the words "a," "an," "an," and / or "the" are not intended to refer to the singular but may include the plural unless the context clearly indicates otherwise. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.

[0042] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0043] Combine Figure 1 and Figure 2 , an omnidirectional wind, solar and wave multi-energy complementary offshore power supply system, including an octagonal semi-submersible base module, a wind power generation module, a photovoltaic power generation module, a wave energy generation module and a mooring module;

[0044] The octagonal semi-submersible base module is used to realize the floating of the offshore power supply system; the wind power generation module, photovoltaic power generation module, and wave power generation module are used to realize wind power generation, photovoltaic power generation, and wave power generation respectively; and the mooring module is used to realize the offshore positioning of the offshore power supply system;

[0045] The wind power generation module and the photovoltaic power generation module are arranged above the octagonal semi-submersible base module, the wave energy power generation module is arranged on the octagonal semi-submersible base module, and a mooring module is arranged below the octagonal semi-submersible base module.

[0046] The octagonal semi-submersible base module includes a column-type buoy 5, a support rod 8, and a damping plate 7;

[0047] The octagonal semi-submersible base module is octagonal in shape as a whole and is formed by eight octagonal column-type buoys 5 connected in series by support rods 8. This structural design can improve the system's wave resistance and ensure the smooth operation of the platform.

[0048] A circular damping plate 7 is provided at the bottom of each column-type pontoon 5 to increase the contact area with water. When the system is acted upon by waves, it tends to move, and the damping plate 7 is located underwater and has a larger contact area with water. Therefore, it will be subject to a force imposed by water to hinder movement, thereby reducing the movement of the device and making the platform more stable.

[0049] In addition, the column-type buoy 5 is divided into a bottom buoyancy cabin, a middle equipment cabin, and an upper office cabin from bottom to top;

[0050] When the floating state of the offshore power supply system needs to be adjusted, it is achieved by filling or draining water into the bottom buoyancy tank. For example, when facing extreme sea conditions such as typhoons, water can be added to the buoyancy tank in the column float 5 to make the entire system dive to ensure safety. The hydraulic control system, linear motor, energy storage system, integrated power distribution system, etc. can be placed in the equipment cabin, and the office cabin can be used for work and life by engineering personnel.

[0051] The wind power generation module includes a wind turbine impeller 1, a wind turbine nacelle 2 and a wind turbine tower 3;

[0052] The wind turbine tower (3) is arranged above the center of the octagonal semi-submersible base module, and its bottom penetrates the center of the octagonal semi-submersible base module and extends out of the octagonal semi-submersible base module. A wind turbine cabin 2 is arranged on the wind turbine tower 3, and a wind turbine generator is arranged in the wind turbine cabin 2 and connected to the wind turbine impeller 1. In actual implementation, a biasing system can also be arranged in the wind turbine cabin 2 to ensure that the wind turbine impeller 1 is always facing the wind, thereby improving the power generation capacity of the wind turbine. The wind turbine is installed in the middle position of the platform, which can ensure that the overall device is more stable and the subsequent operation and maintenance is more convenient.

[0053] The photovoltaic power generation module includes a solar panel 4 and a vertical support rod;

[0054] A plurality of the vertical support rods are arranged on the octagonal semi-submersible base module to form a vertical support rod array. The solar panels 4 are arranged on the octagonal semi-submersible base module through the vertical support rod array. This design enables the solar panels 4 to fully cover the entire platform and improve the power generation capacity. The solar panels 4 are at a certain distance from the sea surface, which is conducive to reducing the impact of wave loads on the solar panels 4 and facilitating construction.

[0055] Combine Figure 3 and Figure 4 , the wave energy power generation module includes a heaving wave absorbing float 6;

[0056] The heaving wave-absorbing float 6 is in a circular ring structure. The number of the heaving wave-absorbing float 6 is the same as the number of the column-type buoys 5. The heaving wave-absorbing float 6 is arranged on the column-type buoy 5. A linear motor is installed between the heaving wave-absorbing float 6 and the column-type buoy 5. Under the action of waves, the heaving wave-absorbing float 6 moves vertically along the column-type buoy 5, thereby driving the linear motor to generate electricity.

[0057] In addition, the wave energy power generation module further includes a rotating wave absorbing float 9, a rotating rod 10, a hydraulic cylinder 11, a piston rod 12 and a fixing frame 13;

[0058] The fixing frame 13 is arranged on the support rod 8, the hydraulic cylinder 11 is hinged on the fixing frame 13, and is connected to the rotating rod 10;

[0059] One side of the piston rod 12 is connected to the rotating rod 10, and the other side is connected to the hydraulic cylinder 11. The rotating rod 10 is provided with a rotating wave-absorbing float 9, that is, the other side of the rotating rod 10 is connected to the rotating wave-absorbing float 9;

[0060] A number of rotating wave-absorbing floats 9 can be installed on the horizontal support rod 8 according to actual conditions. Under the action of waves, the rotating wave-absorbing floats 9 drive the rotating rod 10 connected to it to rotate, thereby driving the piston rod 12 to repeatedly enter and exit the hydraulic cylinder 11, converting wave energy into hydraulic energy, and then converting the hydraulic energy into electrical energy through the hydraulic motor.

[0061] The vertical wave-absorbing floats 6 and the rotating wave-absorbing floats 9 are evenly arranged circumferentially outside the octagonal semi-submersible base module to absorb the energy of incident waves in all directions. In extreme sea conditions, the two types of wave-absorbing floats descend into the seawater and lock their movement to ensure the safety and self-sustainability of the device.

[0062] The mooring module includes an anchor chain 14 and a seabed anchor block 15;

[0063] One end of the anchor chain 14 is connected to the bottom end of the column buoy 5, and the other end of the anchor chain 14 is connected to the seabed anchor block 15;

[0064] There are multiple anchor chains 14, which are evenly arranged circumferentially below the octagonal semi-submersible base module.

[0065] In this embodiment, four anchor chains 14 are arranged in total, and the anchor chains 14 are evenly arranged in a 90° circumferential direction, and the offshore power supply system is positioned at sea through the mooring system.

[0066] The omnidirectional wind, solar and wave multi-energy complementary offshore power supply system of this solution integrates three types of clean and renewable marine energy, wind energy, solar energy and wave energy, into the same power generation platform, building a multi-energy synergistic and complementary energy system. The three energy sources have good complementarity under time and climate conditions, and can continuously and stably output electrical energy under different marine environmental conditions, thereby significantly improving the power generation stability and total output power of the entire platform. In addition, the present invention adopts a structural integration design, and each energy system shares a mooring system and a power control system, which significantly improves the platform space utilization and system integration, and also effectively reduces construction costs and operation and maintenance complexity. The platform has good marine adaptability and module expansion capabilities, and is suitable for a variety of application scenarios such as deep-sea power supply, ocean observation, and marine ranching.

[0067] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. An omnidirectional wind, solar and wave multi-energy complementary offshore power supply system, characterized by: It includes an octagonal semi-submersible base module, a wind power generation module, a photovoltaic power generation module, a wave energy power generation module and a mooring module; The octagonal semi-submersible base module is used to realize the floating of the offshore power supply system; the wind power generation module, photovoltaic power generation module, and wave power generation module are used to realize wind power generation, photovoltaic power generation, and wave power generation respectively; and the mooring module is used to realize the offshore positioning of the offshore power supply system; The wind power generation module and the photovoltaic power generation module are arranged above the octagonal semi-submersible base module, the wave energy power generation module is arranged on the octagonal semi-submersible base module, and a mooring module is arranged below the octagonal semi-submersible base module.

2. The omnidirectional energy-harvesting wind, solar, and wave multi-energy complementary offshore power supply system according to claim 1 is characterized in that: The octagonal semi-submersible base module comprises a column-type buoy (5), a support rod (8), and a damping plate (7); The octagonal semi-submersible base module is octagonal in shape as a whole and is formed by eight octagonal column-type buoys (5) connected in series via support rods (8); A damping plate (7) is provided at the bottom of each column-type buoy (5) to increase the contact area with water.

3. The omnidirectional energy-harvesting wind, solar, and wave multi-energy complementary offshore power supply system according to claim 2 is characterized in that: The column-type buoy (5) is divided from bottom to top into a bottom buoyancy cabin, a middle equipment cabin, and an upper office cabin; When the floating state of the offshore power supply system needs to be adjusted, it is achieved by injecting or releasing water into the bottom buoyancy tank.

4. The omnidirectional energy-harvesting wind, solar, and wave multi-energy complementary offshore power supply system according to claim 2 is characterized in that: The wind power generation module comprises a wind turbine impeller (1), a wind turbine nacelle (2) and a wind turbine tower (3); The wind turbine tower (3) is arranged above the center of the octagonal semi-submerged base module, and its bottom penetrates the center of the octagonal semi-submerged base module and extends out of the octagonal semi-submerged base module. A wind turbine cabin (2) is arranged on the wind turbine tower (3), and a wind turbine generator is arranged in the wind turbine cabin (2) and is connected to the wind turbine impeller (1).

5. The omnidirectional energy-harvesting wind, solar, and wave multi-energy complementary offshore power supply system according to claim 2 is characterized in that: The photovoltaic power generation module comprises a solar panel (4) and a vertical support rod; A plurality of the vertical support rods are arranged on the octagonal semi-submersible base module to form a vertical support rod array, and the solar panel (4) is arranged on the octagonal semi-submersible base module through the vertical support rod array.

6. The omnidirectional energy-harvesting wind, solar, and wave multi-energy complementary offshore power supply system according to claim 2 is characterized in that: The wave energy power generation module comprises a heaving wave absorbing float (6); The heaving wave absorbing float (6) is in a circular ring structure and is arranged on a column-type buoy (5). A linear motor is installed between the heaving wave absorbing float (6) and the column-type buoy (5). Under the action of waves, the heaving wave absorbing float (6) moves heavingly along the column-type buoy (5), thereby driving the linear motor to generate electricity.

7. The omnidirectional energy-harvesting wind, solar, and wave multi-energy complementary offshore power supply system according to claim 6 is characterized in that: The number of the heaving wave-absorbing floats (6) is the same as the number of the column-type floats (5).

8. The omnidirectional energy-harvesting wind, solar, and wave multi-energy complementary offshore power supply system according to claim 6 is characterized in that: The wave energy power generation module further comprises a rotating wave absorbing float (9), a rotating rod (10), a hydraulic cylinder (11), a piston rod (12) and a fixing frame (13); The fixing frame (13) is arranged on the supporting rod (8), the hydraulic cylinder (11) is hinged on the fixing frame (13), and is connected to the rotating rod (10); One side of the piston rod (12) is connected to the rotating rod (10), and the other side is connected to the hydraulic cylinder (11), and a rotating wave-absorbing float (9) is provided on the rotating rod (10); Under the action of waves, the rotating wave-absorbing float (9) drives the rotating rod (10) connected thereto to rotate, thereby driving the piston rod (12) to repeatedly enter and exit the hydraulic cylinder (11), thereby converting wave energy into electrical energy.

9. The omnidirectional energy-harvesting wind, solar, and wave multi-energy complementary offshore power supply system according to claim 8, characterized in that: The vertical wave absorbing floats (6) and the rotating wave absorbing floats (9) are evenly arranged circumferentially outside the octagonal semi-submerged base module to absorb the energy of incident waves in all directions.

10. The omnidirectional energy-harvesting wind, solar, and wave multi-energy complementary offshore power supply system according to claim 2, characterized in that: The mooring module comprises an anchor chain (14) and a seabed anchor block (15); One end of the anchor chain (14) is connected to the bottom end of the column-type buoy (5), and the other end of the anchor chain (14) is connected to the seabed anchor block (15); There are multiple anchor chains (14) which are evenly arranged circumferentially below the octagonal semi-submersible base module.

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