Wind-solar combined power generation device

Abstract

The invention relates to the technical field of offshore power generation, and discloses a wind-solar combined power generation device. The photovoltaic generator set and the wind generator set are arranged on the mounting platform at the same time, so that the power generation device of the structure can integrate solar energy and wind energy, energy fluctuation can be reduced, power output is more stable, stable operation of a power grid can be guaranteed, the overall energy utilization rate is improved, dependence on a traditional power grid is reduced, and the power generation device is worthy of popularization and application. Therefore, the energy self-sufficiency rate is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore power generation, and in particular to a wind-solar combined power generation device. Background Art

[0002] As the global demand for renewable energy continues to grow, the development and application of clean energy forms are increasingly valued. Traditional photovoltaic power generation systems mainly rely on ground-mounted photovoltaic arrays. However, with the increasing shortage of land resources and the pursuit of efficient use of new energy, offshore photovoltaic power generation has gradually emerged as an innovative model.

[0003] Compared with land-based photovoltaics, offshore photovoltaics can not only effectively utilize the vast ocean space, but also avoid environmental problems caused by land occupation. At the same time, the long and stable sunshine time at sea provides more superior natural conditions for photovoltaic power generation.

[0004] However, although there are some design schemes for offshore photovoltaic brackets, most of them focus on the single photovoltaic power generation function and fail to fully utilize the comprehensive resource advantages of the marine environment. Intuitively, photovoltaic power generation depends on sunlight. When weather conditions are bad, such as cloudy, rainy or snowy days, the intensity of solar radiation will decrease, resulting in reduced power generation and affecting power generation efficiency. Summary of the invention

[0005] In view of this, the present invention provides a wind-solar combined power generation device to solve the problem of reduced power generation due to the intensity of solar radiation during photovoltaic power generation.

[0006] Specifically, the wind-solar combined power generation device provided by the present invention comprises an installation platform, a photovoltaic generator set, a wind generator set and an electric storage component. The photovoltaic generator set is installed on the installation platform, and is used to receive solar energy and convert it into electric energy; the wind generator set is fixedly installed on the installation platform, and is used to receive wind energy and convert it into electric energy; the electric storage component is electrically connected to the photovoltaic generator set and the wind generator set through a transmission line, and is used to receive the electric energy generated by the photovoltaic generator set and the electric energy generated by the wind generator set.

[0007] Beneficial effects: The present invention provides a photovoltaic generator set and a wind generator set on the installation platform at the same time, so that the power generation device of this structure can integrate solar energy and wind energy, reduce energy fluctuations, make the power output more stable, help to ensure the stable operation of the power grid, thereby improving the overall energy utilization rate, and reducing the dependence on the traditional power grid, thereby improving the energy self-sufficiency rate. Specifically, during the period of sufficient solar radiation, such as a clear and windless day, photovoltaic power generation becomes the main source of energy, while at night or during the period of sufficient wind, wind power generation becomes the main source of energy. At the same time, since solar energy and wind energy are both clean and renewable energy sources, the wind-solar combined power generation device will not generate greenhouse gas emissions when generating electricity, which is more environmentally friendly, helps to reduce dependence on traditional fossil energy, and promotes sustainable development. In addition, compared with the construction of a photovoltaic power station or a wind power station separately, the wind-solar combined power generation device can save a lot of ground space by integrating the photovoltaic generator set and the wind generator set on the same installation platform.

[0008] In an optional embodiment, the installation platform includes a steel truss group and a steel pipe pile group, the steel pipe pile group includes at least two rows of steel pipe piles arranged at intervals, and the at least two rows of steel pipe piles are used to support and fix the steel truss group.

[0009] Beneficial effects: By setting the installation platform as a combination of steel truss groups and steel pipe pile groups, since both steel truss groups and steel pipe pile groups have high bearing capacity, the installation platform can provide reliable support and installation foundation for photovoltaic generators and wind turbines, so that photovoltaic generators can fully receive solar energy and wind turbines can fully receive wind energy, which helps to improve their power generation efficiency. At the same time, the steel pipe pile group can be quickly installed by prefabrication and on-site splicing, greatly shortening the construction period, while the steel truss group can be quickly assembled and disassembled through modular design, which is convenient for later maintenance and replacement.

[0010] In an optional embodiment, the steel truss group is arranged obliquely in the height direction; the heights of the steel pipe piles in two adjacent rows are different, and the tops of the steel pipe piles with lower heights are used to support or connect the lower positions in the steel truss group, and the steel pipe piles with higher heights are used to support or connect the higher positions in the steel truss group.

[0011] Beneficial effects: By tilting the steel truss group and using two adjacent rows of steel pipe piles of different heights for support or connection, it helps to disperse and transfer the load, making the steel truss group more evenly stressed, reducing stress concentration, and improving its overall stability and durability. At the same time, by tilting the steel truss group, a wide installation space can be provided for photovoltaic generators and wind turbines, thereby improving the space utilization and power generation efficiency of the entire power generation device.

[0012] In an optional embodiment, the wind turbine generator set includes a wind turbine tower, a nacelle hub and wind turbine blades, the wind turbine tower is installed on the top of the highest row of steel pipe piles; the fixed end of the nacelle hub is installed on the top of the tower; and the wind turbine blades are installed on the rotating end of the nacelle hub.

[0013] Beneficial effects: By installing the wind turbine tower on the top of a row of steel pipe piles at a high altitude, the wind turbine generator set can be located at a higher position. Since the wind speed at high altitude is higher and more stable, wind energy can be effectively captured, which helps to improve the power generation efficiency of the wind turbine generator set. At the same time, as the main supporting structure of the wind turbine generator set, the tower can effectively stabilize the nacelle hub and wind turbine blades, reduce the shaking and vibration caused by wind force, and ensure the long-term stable operation of the wind turbine generator set.

[0014] In an optional embodiment, the wind turbine tower is composed of a plurality of tower bodies stacked in the axial direction; wherein two adjacent tower bodies are connected by a flange.

[0015] Beneficial effects: By making the wind turbine tower consist of multiple tower bodies stacked in the axial direction, the size and weight of a single component can be reduced, making it easier to transport, install on site, and disassemble for maintenance or replacement. At the same time, by connecting two adjacent tower bodies through flanges, the two adjacent tower bodies are ensured to be tightly connected, which not only improves the overall stability of the tower, but also effectively resists the vibration and impact generated during the operation of the wind turbine.

[0016] In an optional embodiment, the wind-solar combined power generation device also includes an operation and maintenance platform, one end of the operation and maintenance platform arranged in the horizontal direction is connected to the side wall of the row of steel pipe piles with the highest height, and the other opposite end of the operation and maintenance platform arranged in the horizontal direction is connected to the steel truss group.

[0017] Beneficial effects: By adding an operation and maintenance platform and connecting the highest row of steel pipe piles with the steel truss group, the operation and maintenance personnel can approach the wind turbine generator set and photovoltaic generator set for daily maintenance, inspection and repair work, shortening the moving distance of the operation and maintenance personnel and improving the operation and maintenance efficiency. At the same time, the operation and maintenance platform, as a bridge between the steel pipe pile group and the steel truss group, can effectively utilize the space that might have been wasted. The operation and maintenance personnel can work on the platform without occupying additional ground space, thereby optimizing the spatial layout of the entire power generation device.

[0018] In an optional implementation, the wind-solar combined power generation device further includes a box-type transformer platform, and the box-type transformer platform is installed on the operation and maintenance platform.

[0019] Beneficial effect: By installing the box-type substation platform on the operation and maintenance platform, the operation and maintenance personnel can easily approach the box-type substation to carry out daily operation and maintenance work, such as inspection, maintenance and troubleshooting.

[0020] In an optional embodiment, the installation platform further includes a connection node, and the connection node is used to connect at least one row of the steel pipe piles with a lower height to the steel truss group.

[0021] In an optional embodiment, the wind-solar combined power generation device further includes a mooring ladder, which is installed on the side of the steel pipe pile.

[0022] Beneficial effect: By installing a berthing ladder on the side of the steel pipe pile, a safe and convenient up and down passage is provided for the operation and maintenance personnel when the ship is berthed at the steel pipe pile, allowing them to more easily approach the wind turbine and photovoltaic generator sets for daily maintenance, inspection and repair work.

[0023] In an optional embodiment, the photovoltaic power generation group includes a photoelectric conversion element, and the photoelectric conversion element is installed on the top of the steel truss group.

[0024] Beneficial effects: The photoelectric converter is installed on the top of the steel truss group, so that the photoelectric converter can fully receive solar radiation, which helps to improve the utilization rate of solar energy and increase the power generation of the photovoltaic generator set. At the same time, in the wind-solar combined power generation device, the photoelectric converter is installed on the top of the steel truss group, which can complement the wind generator set. In the case of insufficient wind power or low wind speed, the photovoltaic generator set can make up for the deficiency of wind power generation and ensure the stable and reliable power output of the entire power generation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the specific implementation modes of the present invention, the drawings required for use in the description of the specific implementation modes will be briefly introduced below. Obviously, the drawings described below are some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A three-dimensional view of a wind-solar combined power generation device provided by an embodiment of the present invention;

[0027] Figure 2 A side view of a wind-solar combined power generation device provided in an embodiment of the present invention;

[0028] Figure 3 A three-dimensional view of a wind-solar combined power generation device from another perspective provided by an embodiment of the present invention;

[0029] Figure 4A side view of a box-type transformer platform, an operation and maintenance platform, a steel truss group and a connection node in a wind-solar combined power generation device provided by an embodiment of the present invention when connected;

[0030] Figure 5 A half-section view of a connection node in a wind-solar combined power generation device provided in an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 1. Installation platform; 11. Steel truss group; 12. Steel pipe pile group; 121. Steel pipe pile; 13. Connection node; 131. Connector; 132. Sphere; 133. Fastener; 134. Sleeve; 135. Cone head; 136. Closing plate; 137. Steel pipe;

[0033] 2. Photovoltaic generator set; 21. Photovoltaic conversion element;

[0034] 3. Wind turbine generator set; 31. Wind turbine tower; 311. Tower body; 32. Nacelle hub; 33. Wind turbine blades;

[0035] 4. Flange;

[0036] 5. Operation and maintenance platform;

[0037] 6. Box transformer platform;

[0038] 7. Berthing ladder. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0040] In the description of the present application, it should be understood that the terms "horizontal", "top", "bottom", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In the description of the present application, unless otherwise specified, “plurality” means two or more.

[0042] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0044] Traditional photovoltaic power generation systems mainly rely on ground-mounted photovoltaic arrays. However, with the increasing scarcity of land resources and the pursuit of efficient use of new energy, offshore photovoltaic power generation has gradually emerged as an innovative model.

[0045] Compared with land-based photovoltaics, offshore photovoltaics can not only effectively utilize the vast ocean space, but also avoid environmental problems caused by land occupation. At the same time, the long and stable sunshine time at sea provides more superior natural conditions for photovoltaic power generation.

[0046] However, although there are some design schemes for offshore photovoltaic brackets, most of them focus on the single photovoltaic power generation function and fail to fully utilize the comprehensive resource advantages of the marine environment. Intuitively, photovoltaic power generation depends on sunlight. When weather conditions are bad, such as cloudy, rainy or snowy days, the intensity of solar radiation will decrease, resulting in reduced power generation and affecting power generation efficiency.

[0047] To this end, this application adopts a wind-solar combined power generation device, whose supporting body is made of steel structure trusses. The steel trusses are connected to the foundation at different angles. The supporting foundation uses steel pipe piles, and the foundation can be increased according to different direct sizes. The top of the truss is designed with a flange connected to the upper wind turbine tower, which is used to connect to the upper wind turbine. When the weather is bad and the light resources are poor, the wind turbine can be used to generate electricity, so as to achieve wind-solar complementarity and greatly improve the power generation efficiency.

[0048] Combine the following Figures 1 to 5 , describing an embodiment of the present invention.

[0049] like Figure 1 As shown, the wind-solar combined power generation device provided by the present invention includes an installation platform 1, a photovoltaic power generation group 2, a wind power generation group 3 and an electricity storage component.

[0050] Among them, the photovoltaic generator set 2 is installed on the installation platform 1, and the photovoltaic generator set 2 is used to receive solar energy and convert it into electrical energy; the wind generator set 3 is fixedly installed on the installation platform 1, and the wind generator set 3 is used to receive wind energy and convert it into electrical energy; the energy storage device is electrically connected to the photovoltaic generator set 2 and the wind generator set 3 through a transmission line, and the energy storage device is used to receive the electrical energy generated by the photovoltaic generator set 2 and the electrical energy generated by the wind generator set 3.

[0051] By arranging a photovoltaic generator set 2 and a wind generator set 3 on the installation platform 1, the power generation device of this structure can integrate solar energy and wind energy to achieve multi-energy coordinated power generation, reduce energy fluctuations, make power output more stable, help to ensure the stable operation of the power grid, thereby improving the overall energy utilization rate, and reducing dependence on traditional power grids, thereby improving energy self-sufficiency.

[0052] Specifically, during periods of sufficient solar radiation, such as clear and windless days, photovoltaic power generation becomes the main source of energy, while at night or during periods of sufficient wind, wind power generation becomes the main source of energy.

[0053] At the same time, since solar energy and wind energy are both clean and renewable energy sources, the combined wind and solar power generation device will not produce greenhouse gas emissions when generating electricity, which is more environmentally friendly, helps reduce dependence on traditional fossil energy and promote sustainable development.

[0054] In addition, compared with building a photovoltaic power station or a wind power station separately, the wind-solar combined power generation device can save a lot of ground space by integrating the photovoltaic power generation group 2 and the wind power generation group 3 on the same installation platform 1.

[0055] It can be explained that the power storage components provided in the above embodiments usually use energy storage batteries as devices for storing electrical energy.

[0056] like Figures 1 to 3 As shown in FIG. 1 , the installation platform 1 includes a steel truss group 11 and a steel pipe pile group 12 . The steel pipe pile group 12 includes at least two rows of steel pipe piles 121 arranged at intervals. The at least two rows of steel pipe piles 121 are used to support and fix the steel truss group 11 .

[0057] The present invention configures the installation platform 1 as a combination of a steel truss group 11 and a steel pipe pile group 12. Since both the steel truss group 11 and the steel pipe pile group 12 have a high bearing capacity, the installation platform 1 can provide a reliable support and installation foundation for the photovoltaic generator set 2 and the wind generator set 3, so that the photovoltaic generator set 2 can fully receive solar energy and the wind generator set 3 can fully receive wind energy, which helps to improve their power generation efficiency.

[0058] At the same time, the steel pipe pile group 12 can be quickly installed by prefabrication and on-site splicing, which greatly shortens the construction period, and the steel truss group 11 can be quickly assembled and disassembled through modular design, which is convenient for later maintenance and replacement.

[0059] It can be explained that, in the present application, the number of any row of steel pipe piles 121 in the steel pipe pile group 12 can be two or more, specifically arranged according to the field array.

[0060] It can be explained that in the present application, the steel truss group 11 is arranged obliquely in the height direction; the heights of two adjacent rows of steel pipe piles 121 are different, and the tops of the lower steel pipe piles 121 are used to support or connect the lower positions in the steel truss group 11, and the higher steel pipe piles 121 are used to support or connect the higher positions in the steel truss group 11.

[0061] It can be explained that the steel truss group can be welded from a plurality of rods.

[0062] The present invention helps to disperse and transfer the load by tilting the steel truss group 11 and using two adjacent rows of steel pipe piles 121 of different heights for support or connection, so that the steel truss group 11 is subjected to more uniform force, stress concentration is reduced, and its overall stability and durability are improved.

[0063] At the same time, by arranging the steel truss group 11 at an angle, a wide installation space can be provided for the photovoltaic power generation group 2 and the wind power generation group 3, thereby improving the space utilization and power generation efficiency of the entire power generation device.

[0064] like Figures 1 to 3 As shown, the wind turbine generator set 3 includes a wind turbine tower 31, a nacelle hub 32 and wind turbine blades 33. The wind turbine tower 31 is installed on the top of a row of steel pipe piles 121 with the highest height; the fixed end of the nacelle hub 32 is installed on the top of the wind turbine tower 31. Preferably, a flange is installed at the fixed end of the nacelle hub 32, and the nacelle hub 32 is connected to the wind turbine tower 31 through a flange 4; the wind blades 33 are installed on the rotating end of the nacelle hub 32.

[0065] The present invention installs the wind turbine tower 31 on top of a row of steel pipe piles 121 at a height, so that the wind turbine generator set 3 can be located at a higher position. Since the wind speed at high altitudes is larger and more stable, wind energy can be effectively captured, which helps to improve the power generation efficiency of the wind turbine generator set 3.

[0066] At the same time, the tower, as the main supporting structure of the wind turbine generator set 3, can effectively stabilize and fix the nacelle hub 32 and the wind turbine blades 33, reduce the shaking and vibration caused by wind force, and ensure the long-term stable operation of the wind turbine generator set 3.

[0067] like Figure 2and Figure 3 As shown, the wind turbine tower 31 is composed of a plurality of tower bodies 311 stacked in the axial direction; wherein two adjacent tower bodies 311 are connected by a flange 4 .

[0068] The present invention makes the wind turbine tower 31 consist of a plurality of tower bodies 311 stacked in the axial direction, thereby reducing the size and weight of a single component, making transportation, on-site installation, and disassembly, maintenance or replacement easier.

[0069] At the same time, by connecting two adjacent tower bodies 311 through flange 4, the two adjacent tower bodies 311 are ensured to be tightly connected, which not only improves the overall stability of the tower, but also effectively resists the vibration and impact generated by the wind turbine generator set 3 during operation.

[0070] It can be explained that a vertical ladder is installed at the top of the interior of the tower body 311 to facilitate operation and maintenance personnel to enter the interior of the nacelle hub 32 for inspection and maintenance.

[0071] like Figure 2 and Figure 4 As shown, the wind-solar combined power generation device also includes an operation and maintenance platform 5, one end of which is arranged in the horizontal direction and connected to the side wall of the highest row of steel pipe piles 121, and the other opposite end of the operation and maintenance platform 5 is arranged in the horizontal direction and connected to the steel truss group 11.

[0072] The present invention connects the highest row of steel pipe piles 121 with the steel truss group 11 by adding an operation and maintenance platform 5, so that the operation and maintenance personnel can approach the wind turbine generator set 3 and the photovoltaic generator set at the operation and maintenance platform to carry out daily maintenance, inspection and repair work, thereby shortening the movement distance of the operation and maintenance personnel and improving the operation and maintenance efficiency.

[0073] At the same time, the operation and maintenance platform 5 serves as a bridge between the steel pipe pile group 12 and the steel truss group 11, which can effectively utilize the space that might have been wasted. The operation and maintenance personnel can work on the platform without occupying additional ground space, thereby optimizing the spatial layout of the entire power generation device.

[0074] like Figures 1 to 4 As shown, the wind-solar combined power generation device also includes a box-type transformer platform 6 , that is, a box-type substation, and the box-type transformer platform 6 is installed on the operation and maintenance platform 5 .

[0075] The present invention installs the box-type transformer platform 6 on the operation and maintenance platform 5, so that the operation and maintenance personnel can easily approach the box-type transformer substation to perform daily operation and maintenance work, such as inspection, maintenance and troubleshooting.

[0076] It can be explained that, in the present application, the operation and maintenance platform 5 should be equipped with safety protection facilities, such as safety guardrails and anti-slip floors, to ensure the safety of the operation and maintenance personnel.

[0077] like Figure 2 and Figure 4 As shown, the installation platform 1 further includes a connection node 13 , and the connection node 13 is used to connect at least one row of steel pipe piles 121 of lower height to the steel truss group 11 .

[0078] It can be explained that, in the present application, the connection node 13 is preferably a bolt ball joint connection structure.

[0079] Specifically, if Figure 5 As shown, the connection node 13 includes a connection piece 131 , a sphere 132 , a fastener 133 , a sleeve 134 , a cone head 135 and a sealing plate 136 , and is suitable for connecting a steel pipe 137 .

[0080] The connecting member 131 is preferably a high-strength bolt, the sphere 132 is preferably a bolt ball, and the fastener 133 is preferably a fastening screw. During installation, the cone head 135 or the sealing plate 136 with the fastening bolts are first welded to the two ends of the steel pipe 137, and the long hexagonal sleeve 134 (or the long hexagonal plain nut) is set on the screw extending from the cone head 135 or the sealing plate, and the high-strength bolt and the sleeve 134 are connected together with the fastening screw. During assembly, the long hexagonal sleeve 134 is directly screwed to drive the high-strength bolt to rotate through the fastening screw, so that the high-strength bolt is screwed into the sphere 132 until the head of the high-strength bolt is tightly attached to the sealing plate 136 or the cone head 135. After the intersection rods are connected in this way, a node is formed, and the tightening degree of the bolt is controlled by the fastening screw.

[0081] When the rod is pulled, the force transmission route is: tension→steel pipe 137→cone head 135 or sealing plate 136→high-strength bolt→bolt ball.

[0082] When the rod is under pressure, the force transmission route is: pressure→steel pipe 137→cone head 135 or sealing plate 136→sleeve 134→bolt ball.

[0083] In this way, the bolt ball hinge connection structure can realize relative rotation in multiple directions, making the connection between the steel truss group 11 and the steel pipe pile 121 more reliable, and at the same time, it can adapt to more complex load and deformation conditions. At the same time, by adopting the bolt ball hinge connection structure, this structure makes most of the rods in the steel truss group 11 subject to axial tension or axial compression, forming a two-force rod structure, which can make the upper steel truss deform in a coordinated manner when encountering large waves, and the overall force resistance is better. At the same time, it can also greatly reduce the cross-sectional area of ​​the rods and greatly reduce the amount of engineering.

[0084] It can be explained that, in the present application, there is one, two or more connecting nodes 13 .

[0085] When one connection node 13 is provided, the connection node 13 directly connects the steel pipe pile 121 and the steel truss group 11 .

[0086] When two or more connection nodes 13 are provided, a connection structure is formed between the two or more connection nodes 13. For example, when three connection nodes 13 are provided, the three connection nodes 13 are connected to each other. Figure 2 and Figure 4 As shown, the whole structure is a triangle, in which one of the connection nodes 13 is installed on the top of the steel pipe pile 121 , and the other two connection nodes 13 are connected to the previous connection node 13 and the steel truss group 11 .

[0087] It can be explained that in the present application, when N rows of steel pipe piles 121 are provided, N-1 rows of steel pipe piles 121 with lower height are provided, wherein among the N-1 rows of steel pipe piles 121 with lower height, at least one row of steel pipe piles 121 is connected to the steel truss group 11 through a connecting node.

[0088] For example, when two rows of steel pipe piles 121 are provided, one row of steel pipe piles 121 with a lower height is provided, and at this time, the row of steel pipe piles 121 with a lower height is connected to the steel truss group 11 through the connecting node 13; when three or more rows of steel pipe piles 121 are provided, two or more rows of steel pipe piles 121 with a lower height are provided, and at least one row of steel pipe piles 121 with a lower height is connected to the steel truss group 11 through the connecting node 13.

[0089] Preferably, all rows of steel pipe piles 121 of relatively low height are connected to the steel truss group 11 via connection nodes 13 .

[0090] like Figure 2 and Figure 3 As shown, the wind-solar combined power generation device also includes a mooring ladder 7, which is installed on the side of the steel pipe pile 121.

[0091] The present invention provides a safe and convenient up and down passage for operation and maintenance personnel by installing a berthing ladder 7 on the side of the steel pipe pile 121 when the ship is berthed at the steel pipe pile 121, so that they can more easily approach the wind turbine generator set 3 and the photovoltaic generator set 2 to carry out daily maintenance, inspection and repair work.

[0092] It can be explained that, in the present application, the berthing ladder 7 comprises a ladder body and a limiting mechanism, wherein the limiting mechanism is used to buckle the ladder body on the ship to prevent personnel from slipping. The limiting mechanism may be a footrest.

[0093] Similarly, tread strips for operation and maintenance personnel to step on and guardrails for operation and maintenance personnel to support can be provided on the main body of the ladder.

[0094] It should be noted that, in the above embodiment, the berthing ladder 7 is arranged close to the operation and maintenance platform 5 to facilitate the operation and maintenance personnel to climb up the berthing ladder 7 at the ship to enter the operation and maintenance platform 5 .

[0095] like Figure 1 and Figure 3 As shown, the photovoltaic power generation group 2 includes a photoelectric conversion element 21 , and the photoelectric conversion element 21 is installed on the top of the steel truss group 11 .

[0096] The present invention installs the photoelectric conversion element 21 on the top of the steel truss group 11 so that the photoelectric conversion element 21 can fully receive solar radiation, which helps to improve the utilization rate of solar energy and increase the power generation of the photovoltaic power generation group 2.

[0097] At the same time, in the wind-solar combined power generation device, the photovoltaic conversion element 21 is installed on the top of the steel truss group 11, which can complement the wind power generator set 3. In the case of insufficient wind power or low wind speed, the photovoltaic generator set 2 can make up for the deficiency of wind power generation and ensure the stable and reliable power output of the entire power generation device.

[0098] It can be explained that the photoelectric conversion element 21 is preferably a photovoltaic panel, and during installation, the photovoltaic panel is laid on the top of the truss.

[0099] Furthermore, when designing a photovoltaic power generation unit, the layout and size of the steel truss group 11 are first determined so that photovoltaic panels of appropriate size can be selected for installation. Generally, one installation platform can install at least one or two photovoltaic panels of string inverter capacity, and then the size and specification of each structural component are determined according to the marine hydrology, wind pressure, wind turbine load and photovoltaic panel load of the site.

[0100] During installation, all steel structure components are prefabricated on land, the upper steel truss main frame of the steel truss group 11 is welded on site, the remaining diagonal braces and transverse braces are pre-assembled through ball joint structures, the steel pipe piles 121 and the tower body 311 are rolled on site by plates, and the installation of photovoltaic panels is completed on site.

[0101] It can be explained that the photovoltaic power generation group 2 also includes structures such as an inverter and a distribution box. At this time, the inverter converts the direct current generated by the photoelectric conversion element 21 into alternating current, and by using transmission lines, the electric energy generated by each photoelectric conversion element is collected in the energy storage battery, and distributed and protected at the distribution box.

[0102] Of course, components for overvoltage protection, undervoltage protection, short circuit protection, leakage protection, etc. may also be provided. Since they have not been improved and are still implemented in a conventional manner, they will not be described in detail here.

[0103] During offshore construction, the foundation steel pipe piles 121 are first driven into the specified position and specified elevation, and then the steel truss group 11 is hoisted as a whole. The front pile is welded to the steel pipe pile 121 through a ball joint structure, and the rear pile is connected to the bolts in the steel truss group 11 through the flange 4. After the steel truss group 11 is installed at sea, the box-type transformer is hoisted to the specified position of the box-type transformer platform 6, and finally the wind turbine tower 31, the nacelle hub 32 and the wind turbine blades 33 are hoisted.

[0104] In addition, the circuit of the photoelectric converter 21 on the steel truss group 11 is mainly routed through the wiring troughs set up between the steel truss groups 11. The DC between the photoelectric converters 21 is connected in series and collected to the string inverter, and then fixed through the truss and collected to the box transformer. The DC power generated by the upper wind turbine generator set 3 is collected to the transformer through the trough box laid from the operation and maintenance platform 5 through the wind turbine tower 31, and then sent out uniformly.

[0105] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A wind-solar combined power generation device, characterized in that: include: Mounting platform (1); A photovoltaic power generation group (2), the photovoltaic power generation group (2) being installed on the installation platform (1), the photovoltaic power generation group (2) being used to receive solar energy and convert it into electrical energy; A wind turbine generator set (3), wherein the wind turbine generator set (3) is fixedly mounted on the mounting platform (1), and the wind turbine generator set (3) is used to receive wind energy and convert it into electrical energy; An electricity storage component, the electricity storage component is electrically connected to the photovoltaic generator set (2) and the wind generator set (3) via a power transmission line, and the electricity storage component is used to receive the electric energy generated by the photovoltaic generator set (2) and the electric energy generated by the wind generator set (3).

2. The wind-solar combined power generation device according to claim 1, characterized in that: The installation platform (1) comprises: Steel truss group (11); A steel pipe pile group (12), the steel pipe pile group (12) comprising at least two rows of steel pipe piles (121) arranged at intervals, the at least two rows of steel pipe piles (121) being used to support and fix the steel truss group (11).

3. The wind-solar combined power generation device according to claim 2, characterized in that: The steel truss group (11) is arranged obliquely in the height direction; The heights of the steel pipe piles (121) in two adjacent rows are different. The tops of the steel pipe piles (121) with a lower height are used to support or connect the lower positions in the steel truss group (11), and the steel pipe piles (121) with a higher height are used to support or connect the higher positions in the steel truss group (11).

4. The wind-solar combined power generation device according to claim 3, characterized in that: The wind turbine generator set (3) comprises: A wind turbine tower (31), wherein the wind turbine tower (31) is installed on the top of the highest row of steel pipe piles (121); A nacelle hub (32), wherein a fixed end of the nacelle hub (32) is mounted on the top of the wind turbine tower (31); A fan blade (33) is mounted on the rotating end of the nacelle hub (32).

5. The wind-solar combined power generation device according to claim 4, characterized in that: The wind turbine tower (31) is composed of a plurality of tower bodies (311) stacked in an axial direction; Two adjacent tower bodies (311) are connected via a flange (4).

6. The wind-solar combined power generation device according to claim 3, characterized in that: Also includes: An operation and maintenance platform (5), wherein one end of the operation and maintenance platform (5) arranged in the horizontal direction is connected to the side wall of the highest row of the steel pipe piles (121), and the other oppositely arranged end of the operation and maintenance platform (5) arranged in the horizontal direction is connected to the steel truss group (11).

7. The wind-solar combined power generation device according to claim 6, characterized in that: Also includes: A box-type transformer platform (6), wherein the box-type transformer platform (6) is installed on the operation and maintenance platform (5).

8. The wind-solar combined power generation device according to any one of claims 3 to 7, characterized in that: The installation platform (1) further comprises a connection node (13), wherein the connection node (13) is used to connect at least one row of the steel pipe piles (121) of a lower height to the steel truss group (11).

9. The wind-solar combined power generation device according to any one of claims 2 to 7, characterized in that: Also includes: A mooring ladder (7), wherein the mooring ladder (7) is installed on the side of the steel pipe pile (121).

10. The wind-solar combined power generation device according to any one of claims 2 to 7, characterized in that: The photovoltaic power generation group (2) comprises a photoelectric conversion element (21), and the photoelectric conversion element (21) is installed on the top of the steel truss group (11).

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