Novel offshore wind-light-wave energy comprehensive complementary power generation structure system

Abstract

The invention discloses a novel offshore wind-light-wave energy comprehensive complementary power generation structure system which comprises a vertical axis wind power generation module, a solar photovoltaic power generation module, a point absorption type wave energy power generation module, a floating platform and a mooring system. A point absorption type wave energy power generation device is arranged in the middle of the floating platform, and the mooring system is connected with the floating platform so as to keep the floating platform at the sea position. According to the novel offshore wind-light-wave energy comprehensive complementary power generation structure system, wind energy, solar energy and wave energy can be fully utilized, the cost per kilowatt-hour is effectively reduced, pollution and consumption are avoided, and application and popularization are suggested.

Description

Technical Field

[0001] The present invention discloses a marine renewable energy power generation technology, which belongs to the field of building technology of wind power, solar power generation and wave power generation systems, and specifically relates to a wind energy-solar energy-wave energy multi-energy comprehensive complementary power generation platform. Background Art

[0002] With the gradual depletion of traditional energy sources like coal and oil, there is an urgent need to shift energy supply from traditional to renewable energy. However, existing single-type marine renewable energy power generation devices generally face challenges such as low resource utilization, high cost per kilowatt-hour, and difficulty in grid connection. Therefore, the research on integrated floating platforms that integrate and complement multiple renewable energy sources at sea has become an inevitable trend in the future development and utilization of marine resources.

[0003] The offshore wind-solar-wave energy integrated complementary power generation device is committed to organically combining multiple offshore energy power generation methods and utilizing the complementary characteristics of different energy sources. It can effectively improve energy utilization efficiency and the stability of the power generation system, ensure the reliable supply of offshore electricity, and promote the large-scale development and utilization of offshore renewable energy.

[0004] It should be noted that the information disclosed in the above background technology section is only used to understand the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Summary of the Invention

[0005] In response to the above-mentioned defects of the background technology, the present invention proposes a multi-energy complementary offshore power generation device with novel structure, convenient construction, and the ability to effectively combine wind power generation, solar power generation and wave power generation.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A novel offshore wind-solar-wave energy integrated complementary power generation structure system, characterized by comprising:

[0008] A vertical axis wind power generation module, a point absorption wave energy power generation module, a photovoltaic power generation module, a floating platform, and a mooring system. The vertical axis wind power generation module and the solar photovoltaic power generation module are arranged on the floating platform, and the point absorption wave energy power generation module is arranged in the middle thin-walled open cylinder of the floating platform. The mooring system is connected to the floating platform through a guide hole to maintain the relative stability of the floating platform at sea.

[0009] The floating platform is an ultra-large semi-submersible circular platform foundation used to provide buoyancy. The point absorption wave energy power generation device is arranged in the middle thin-walled open cylinder and includes a buoy, a pressure rod and a hollow cylinder. The buoy is connected to the pressure rod. The buoy begins to perform vertical linear reciprocating motion with the rise and fall of waves, thereby driving the pressure rod to move up and down in the hollow cylinder, converting wave energy into mechanical energy, and then driving the generator to generate electricity through the pressure rod;

[0010] The wind power generation module includes wind turbine blades, a tower, a rotating shaft and a tower. The tower is arranged in a cross shape at both ends of the opening of a thin-walled cylinder, and the nacelle is located inside the tower. The wind turbine blades convert the collected wind energy into rotational mechanical energy, which is then transmitted to the transmission system in the nacelle through the rotating shaft to drive the generator to generate electricity.

[0011] The movement of the buoy is achieved through the expansion and contraction of the connected rods, which enables the flow of gas at the opening of the thin-walled cylinder, thereby driving the rotation of the vertical axis wind turbine arranged at the wind outlet, thereby improving the power generation efficiency of the wind turbine and reducing the impact of waves on the floating platform.

[0012] The photovoltaic power generation module includes a solar photovoltaic panel, a photovoltaic support, a rotating shaft and a base platform. The rotating shaft is equipped with a light sensor that can detect the direction of direct sunlight and then automatically control the photovoltaic panel to rotate in the direction of direct sunlight.

[0013] The floating platform is an ultra-large semi-submersible circular structure for providing buoyancy;

[0014] A thin-walled cylindrical structure is provided in the middle of the floating platform, with four square holes opened around the thin wall, and the point absorption wave energy power generation module is arranged in the thin-walled cylindrical structure;

[0015] The mooring system is a multi-point mooring system, comprising a plurality of anchor chains, one end of each of which is connected to a winch through a guide hole of the floating platform, and the other end is connected to an anchor, with buoys and iron blocks arranged on the anchor chains; the plurality of anchor chains are arranged in four groups, with two anchor chains in each group, and the anchor chains in each group are arranged at 90° around the floating platform.

[0016] One end of the dynamic cable is connected to the generator set on the floating platform, and the other end is connected to the static cable on the seabed, transmitting the generated electricity to the substation, where it is boosted by the transformer and then connected to the power grid.

[0017] The beneficial effects of the present invention are:

[0018] The present invention utilizes a large, semi-submersible, circular floating platform as a carrier. Wind and photovoltaic power generation modules are deployed on the platform, and a point-absorbing wave energy generation module is located in the center of the platform. This achieves efficient, reliable, and stable utilization of offshore wind, wave, and solar energy through complementary energies. The point-absorbing wave energy generation module, housed within a thin-walled cylinder in the center of the platform's foundation, not only absorbs wave energy but also drives airflow as the buoy moves vertically with the waves, allowing the wind turbine to generate electricity even in calm conditions, thereby improving the overall platform's power generation efficiency. Furthermore, the wave energy generation device of the present invention enhances the platform's stability, significantly increasing its ability to resist heave motion. Furthermore, the solar power generation device installed on the floating platform ensures that the photovoltaic panels are always facing the sun, effectively utilizing the abundant solar energy at sea while also overcoming the significant land occupation associated with photovoltaic panels. Furthermore, the placement of buoys and iron blocks on the anchor chain effectively improves the platform's safety and resilience in extreme wind and wave conditions.

[0019] Compared with traditional single power generation devices, the present invention realizes the multi-energy-level complementarity of offshore wind energy, solar energy and wave energy, improves the power generation efficiency and platform stability, can ensure stable power supply, has good economic benefits, and is suitable for promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the three-dimensional structure of the power generation device of the present invention

[0021] Figure 2 This is a schematic diagram of the main structure of the present invention

[0022] Figure 3 Schematic diagram of the top view of the device of the present invention

[0023] Figure 4 This is a schematic diagram of the side structural cross-sectional view of the present invention

[0024] Figure 5 Schematic diagram of the wind power generation device of the present invention

[0025] Figure 6 Schematic diagram of the solar photovoltaic power generation device of the present invention

[0026] Figure numerals: 1. Solar power generation module; 2. Wind power generation module; 3. Point absorption wave energy power generation module; 4. Floating platform; 5. Mooring line; 6. Thin-walled cylinder; 7. Counterweight iron block; 8. Buoy; 9. Guide hole. DETAILED DESCRIPTION

[0027] In order to illustrate the technical solution and technical effects of the present invention, the present invention is further described in detail below with reference to the accompanying drawings. It should be emphasized that the following description is only exemplary and is not intended to limit the scope of the present invention and its application.

[0028] like Figure 1-6 As shown, an offshore wind, solar and wave energy integrated complementary power generation platform includes a solar photovoltaic power generation module, a vertical axis wind power generation module, a point absorption wave energy power generation module, a floating platform and a mooring system. The photovoltaic power generation module and the wind power generation module are arranged on the platform, and the point absorption wave energy power generation module is arranged under the platform. The mooring system is connected to the platform to maintain the position of the floating platform at sea.

[0029] The floating platform 4 is an ultra-large circular semi-submersible floating platform, which is connected to a mooring system via a guide hole 9 to maintain a relatively stable position of the floating platform at sea.

[0030] The wind power generation module includes wind turbine blades 2-1, tower 2-2, rotating shaft 2-3 and tower 2-4, and the generator cabin is arranged in 2-4; the top of the tower 2-4 is the rotating shaft 2-3; the towers 2-2 are evenly arranged at 120° on the rotating shaft, and the blades 2-1 are connected to the tower 2-2; the wind turbine blades 2-1 convert the absorbed wind energy into mechanical energy, and then transmit it to the cabin in the tower 2-4 through the rotating shaft 2-3, and finally drive the transmission system generator to generate electricity.

[0031] The solar photovoltaic power generation device includes a foundation 1-1, a rotating shaft 1-2, a support 1-3, and a solar photovoltaic panel 1-4. The solar photovoltaic panel 1-4 is arranged on the support 1-3, and the rotating shaft 1-2 is connected to the support 1-3. The rotating shaft 1-2 is equipped with a light sensor that can automatically track the direction of direct sunlight, thereby controlling the rotation of the rotating shaft so that the photovoltaic panel 1-4 always faces the direction of direct sunlight, improving the utilization rate of solar energy and thereby improving the efficiency of the entire power generation platform. The foundation 1-1 can be fixed to the floating platform 4 by bolts, thereby maintaining the relative stability of the solar photovoltaic module and the floating platform. The rotating shaft 1-2 is equipped with a power connection cable, which can integrate the electricity generated by the solar power generation module 1 into an external cable for external transmission.

[0032] The point absorption wave energy power generation device 3 is placed below the center of the floating platform 4. It consists of a thin-walled cylinder 3-1, a pressure rod 3-2 and a buoy 3-3. The buoy 3-3 performs vertical linear reciprocating motion to convert wave energy into mechanical energy, which is then driven by the pressure rod to generate electricity. Compared with the traditional method of arranging wave energy power generation devices around the platform, arranging the wave energy power generation device 3 in the middle of the floating platform is not

[0033] It can not only improve the stability of the floating platform 4, but also increase the power generation of the wind power generation module 2. Firstly, the wave energy power generation device is equivalent to a damping plate, which can greatly increase the damping of the floating platform in the vertical swing direction, thereby reducing the amplitude response of the floating platform in the vertical swing direction, and ultimately effectively improve the stability of the platform; secondly, when the buoy moves in the thin-walled cylinder with the waves, it drives the air flow at the upper open cylinder 8, thereby increasing the power generation of the wind power generation module 2.

[0034] The mooring system includes anchor chains 5, counterweight iron blocks 6, and buoys 7. Compared with traditional mooring systems, arranging iron blocks and buoys on the mooring lines not only increases the stability of the platform, but also reduces the impact of first-order wave forces on the mooring lines, alleviates fatigue damage to the mooring lines, and thus reduces the risk of structural fatigue failure.

[0035] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A novel offshore wind-solar-wave energy integrated complementary power generation structure system, characterized by: include: A solar photovoltaic power generation module (1), a wind power generation module (2) and a point absorption wave energy power generation module (3), wherein the photovoltaic power generation module (1) is arranged on a floating platform (4), the wave energy power generation module (3) is installed at the geometric center cylinder of the floating platform (4), and the wind power generation module (2) is arranged in a "cross" shape on the floating platform (4).

2. The novel offshore wind-solar-wave energy integrated complementary power generation structure system according to claim 1, characterized in that: The wave energy power generation device (3) starts to perform vertical linear reciprocating motion with the rise and fall of waves through the buoy (3-3), converts wave energy into mechanical energy, and then drives the upper generator to generate electricity through the pressure rod (3-2). When the pressure rod (3-2) moves in the hollow cylinder (3-1), it can drive the air flow at the opening of the upper buoy, thereby driving the wind turbine (2) to work.

3. The novel offshore wind-solar-wave energy integrated complementary power generation structure system according to any one of claims 1 to 2, characterized in that: The wind power generation module is composed of wind turbine blades (2-1), a tower (2-2), a rotating shaft (2-3) and a tower (2-4), which are symmetrically arranged in a "cross shape" on both sides of the air outlet of the middle thin-walled cylinder (6). The wind turbine blades convert the collected wind energy into mechanical energy, which is then transmitted to the transmission system in the tower (2-4) through the rotating shaft (2-3) to drive the generator to generate electricity.

4. The novel offshore wind-solar-wave energy integrated complementary power generation structure system according to any one of claims 1 to 3, characterized in that: The solar power generation device (1) comprises a base platform (1-1), a rotating shaft (1-2), a support (1-3), and a solar photovoltaic panel (1-4). The rotating shaft is provided with a light sensor that can detect the direction of direct sunlight. The rotating shaft (1-2) can be adjusted according to the direction of the sunlight to control the rotating shaft (1-2) to rotate along the direction, and finally drive the photovoltaic panel (1-4) to rotate in the direction of direct sunlight.

5. The novel offshore wind-solar-wave energy integrated complementary power generation structure system according to claim 4 is characterized in that: Cables for power supply connection and transmission are arranged inside the solar power generation devices.

6. The novel offshore wind-solar-wave energy integrated complementary power generation structure system according to any one of claims 1 to 5, characterized in that: The floating platform (4) is a semi-submersible circular super-large floating body, a thin-walled cylindrical open hole structure is provided at its geometric center, and a point absorption wave energy power generation device (3) is provided inside the structure.

7. The novel offshore wind-solar-wave energy integrated complementary power generation structure system according to any one of claims 1 to 6, characterized in that: The mooring system is a multi-point mooring system, wherein four groups of mooring lines (5) are arranged in a rectangular shape below the floating platform, each group of mooring lines is composed of two anchor chains, which are arranged at 90 degrees to the circumference of the platform foundation and are connected to the floating platform (4) through guide holes (9). Counterweight iron blocks (7) and buoys (8) are arranged on the anchor chains (5).

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