Photovoltaic supporting structure for same offshore wind and light field

Abstract

The utility model discloses a photovoltaic support structure for a same offshore wind and light field in the technical field of renewable energy power generation. The photovoltaic supporting structure for the same offshore wind and light field comprises an offshore wind power plant used for power generation and photovoltaic panels, the photovoltaic panels are laid in unoccupied sea areas between wind turbine generators of the offshore wind power plant, the photovoltaic supporting structure further comprises first rail cables fixedly connected to the wind turbine generators, and each first rail cable comprises a middle parallel section and anchoring sections at the two ends; the parallel sections are parallel to the horizontal plane and arranged between the wind turbine generators, and the anchoring sections are used for anchoring the two ends of the first rail cable to the seabed. The system further comprises a frame-type steel truss structure, the frame-type steel truss structure is fixedly connected to the adjacent first rail cables, and a photovoltaic panel is laid on the upper end face of the frame-type steel truss structure. The first rail cable and the frame type steel truss structure serve as supporting structures, implementation is convenient, the engineering amount is small, the construction cost is low, the method can be suitable for deeper sea areas, and when the method is suitable for construction near the built wind power plant, the built wind power plant is not disturbed by pile soil.

Description

Technical Field

[0001] The utility model relates to the technical field of renewable energy power generation, and in particular to a photovoltaic support structure used for offshore wind and solar power generation. Background Art

[0002] The development of offshore wind power and offshore photovoltaic power on the same site refers to the use of unused sea space between wind turbines within the offshore wind farm area to deploy offshore photovoltaic power generation systems to develop offshore solar energy. The advantages of developing offshore wind and solar power on the same site are: first, intensive and economical use of the sea. The use of the sea for offshore wind power is exclusive to a certain extent. The vacant sea area between wind turbines is used to lay offshore photovoltaic modules, and the transmission corridors and landing points are shared, which can achieve multi-dimensional and three-dimensional use of the sea and comprehensive development of resources; second, it reduces construction costs. The development of wind and solar power on the same site can share booster stations, transmission corridors, and geological survey and hydrological and other preliminary data, which can share and reduce construction costs; third, it improves the quality of electricity. Wind power and photovoltaic power have different output characteristics and are complementary to a certain extent. The development of the same site can improve the quality of output electricity.

[0003] However, the development and construction of offshore photovoltaic power plants on the same site while ensuring the power generation of the planned offshore wind farms has extremely high requirements for the design and construction of offshore photovoltaic foundations and supporting structures. In particular, when building new offshore photovoltaic power plants in an existing offshore wind farm, how to ensure that the existing wind farm is not affected by construction such as pile soil disturbance, and how to ensure the safe operation of photovoltaic construction vessels and machinery on site are difficult problems that need to be solved urgently.

[0004] At present, when the water depth is less than 10m, fixed pile foundations are often proposed as the supporting structure for offshore photovoltaics; when the water depth is greater than 10m, floating bodies are often used as the supporting structure for offshore photovoltaic modules. Under the conditions of offshore wind and solar power, there are still many difficulties in the manufacture, launching, floating, and anchoring of floating photovoltaic structure systems.

[0005] In order to reduce the impact of offshore wind farm construction on the marine environment, offshore wind farms should, in principle, be developed and constructed in waters with a water depth of more than 10 meters and 10 kilometers offshore. When fixed pile foundations are applied to deep waters, the engineering workload is large, and the cost of pile foundation production and construction is more obvious. Utility Model Content

[0006] In order to overcome the technical problems in the existing offshore wind and solar power co-construction that the fixed pile foundation photovoltaic structure has a large construction workload, high construction cost and is mainly suitable for shallow water areas, the utility model provides a photovoltaic support structure for offshore wind and solar power co-construction.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] A photovoltaic support structure for offshore wind and solar power generation comprises an offshore wind farm and photovoltaic panels for power generation. The photovoltaic panels are laid in the spare sea area between the wind turbines of the offshore wind farm. The structure also comprises a first rail fixedly connected to the wind turbines. The first rail comprises a parallel section in the middle and anchoring sections at both ends. The parallel sections are arranged parallel to the horizontal plane and arranged between the wind turbines. The anchoring sections are used to anchor the two ends of the first rail to the seabed. The structure also comprises a frame steel truss structure. The frame steel truss structure is fixedly connected to the adjacent first rails. The photovoltaic panels are laid on the upper end surface of the frame steel truss structure.

[0009] In this application, an offshore photovoltaic support structure suitable for offshore wind and solar co-field scenarios is proposed, specifically a fixed support structure fixed by a rail cable anchoring system. Compared with the existing fixed pile-based photovoltaic structure, the support structure of this application, specifically including a first rail cable and a frame-type steel truss structure, is easy to implement, has a small amount of engineering, low construction cost, and can be applied to deeper waters. When it is applied to construction near an existing wind farm, the existing wind farm is not disturbed by pile soil.

[0010] In some embodiments, four adjacent wind turbine sets are used as a unit, and the connection line of the four wind turbine sets in a unit forms a rectangle, and a first rail cable parallel section is arranged between the wind turbine sets at both ends of the long side of the rectangle.

[0011] In this embodiment, four adjacent wind turbines are used as a unit, and the four wind turbines in a unit are connected in a rectangular shape according to this standard. Since the wind turbines are located at the end points of a unit, there is no wind turbine in the middle of a unit, which is convenient for laying photovoltaic panels and avoids difficulty in repairing or maintaining the wind turbines after the construction of wind power on the same site. Furthermore, a first rail is set corresponding to the long side of the rectangle to better support the photovoltaic panels.

[0012] In some embodiments, within a unit, the first rail cable corresponding to the long side of the rectangle includes two groups of upper and lower rail cables, each group of upper and lower rail cables consists of two steel cables, the two steel cables are arranged in parallel above and below in the parallel section, and the upper and lower ends of the frame-type steel truss structure are respectively connected and fixed to the upper and lower parallel steel cables.

[0013] In this embodiment, the first rail cable is arranged as above, so that the upper and lower ends of the frame steel truss structure are fixed on the steel cable to provide a good installation and fixing effect, which is convenient for providing long-term positioning and support effect for the frame steel truss structure during photovoltaic power generation operation.

[0014] In some embodiments, the two steel cables of each set of upper and lower rail cables are anchored together in a rail cable anchoring system.

[0015] In this embodiment, it is easy to see from the above that each set of upper and lower rail cables is arranged between wind turbines, that is, the aforementioned parallel section includes upper and lower parallel steel cables. In order to simplify the construction and reduce the amount of engineering work, the two steel cables of a set of upper and lower rail cables can be anchored together in a rail cable anchoring system.

[0016] In some embodiments, within one unit, the frame-type steel truss structure is divided into a plurality of truncated steel truss beam units along the long side of the rectangle, and the plurality of truncated steel truss beam units are fixedly connected.

[0017] In this embodiment, multiple sections of truncated steel truss beam units are fixedly connected to form a frame-type steel truss structure, which is convenient for the installation of the photovoltaic panel support structure during construction; and the frame-type steel truss structure is divided into multiple sections along the long side of the rectangle. At this time, during construction, the first rail cable can be used as a beam shifting track for installing the truncated steel truss beam unit to provide guidance and upper support for the installation process of the truncated steel truss beam unit, thereby facilitating installation and construction.

[0018] In some embodiments, within a unit, the first rail cables corresponding to two long sides of the rectangle have different horizontal heights.

[0019] In this embodiment, taking into account the different sunlight environments at the construction site, the angle of the photovoltaic panel is usually set accordingly, and the two long sides of the rectangle correspond to different horizontal heights of the first rail cable so that the installed photovoltaic panel reaches a preset angle. Obviously, the horizontal height difference here is related to the inclination angle of the photovoltaic panel.

[0020] In some embodiments, the height of the first rail cable parallel section is above the designed high water level of the wind farm.

[0021] In this embodiment, the height of the first rail cable parallel section is set above the designed high water level of the wind farm to ensure that the photovoltaic panels are not affected by ocean currents and waves as much as possible.

[0022] In some embodiments, the wind turbine generator set includes a wind turbine generator set foundation at the lower end and a wind turbine generator set tower at the upper end, and the first rail cable is fixedly connected to the wind turbine generator set foundation.

[0023] In this embodiment, the first rail cable is installed on the foundation of the wind turbine generator set to reduce the force influence of the photovoltaic support structure on the tower of the wind turbine generator set.

[0024] In some embodiments, the photovoltaic panel delivery cable is connected to the wind turbine delivery cable through a frame-type steel truss structure.

[0025] In this embodiment, the frame-type steel truss structure is convenient for laying cables inside, and the photovoltaic panels are laid in one unit as above, that is, in four wind turbines, which facilitates the connection between the photovoltaic panel delivery cables and the wind turbine delivery cables, greatly reducing the project cost.

[0026] The beneficial effects of the utility model are:

[0027] 1. An innovative pile-free fixed photovoltaic support structure that can be used under the same field conditions as offshore wind and solar power is proposed. Compared with the existing fixed pile-based photovoltaic structure, the support structure of this application specifically includes a first rail cable and a frame-type steel truss structure, which is easy to implement, has a small amount of engineering, low construction cost, and can be applied to deeper sea areas. Moreover, when it is applicable to the construction near an existing wind farm, the existing wind farm will not be disturbed by piles and soil.

[0028] 2. The traditional floating offshore photovoltaic system is supported by a buoy to float on the sea surface. It is affected by waves, currents and other loads for a long time. The photovoltaic power generation efficiency is low, the support structure strength requirements are high, and dynamic submarine cables are required to be sent out, which further increases the cost. The bottom of the photovoltaic support structure for offshore wind and solar power proposed by the present invention is located above the designed high water level of the wind farm, avoiding the influence of waves, currents and other loads. The structure is more stable, the photovoltaic power generation efficiency is improved, and the sending cable can be placed in a frame steel truss structure and connected to the wind turbine sending submarine cable, which greatly reduces the project cost.

[0029] 3. Four adjacent wind turbines are divided into one unit, which is convenient for laying photovoltaic panels, and the laying of photovoltaic panels does not affect the maintenance of wind turbines; supplemented by the segmented design of the frame-type steel truss structure, the first rail cable can be used as the installation guide and upper support of the truncated steel truss unit during construction, which is convenient for installation and construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of a photovoltaic support structure for offshore wind and solar power generation provided by the utility model;

[0031] Figure 2 A front view of the photovoltaic support structure provided by the utility model;

[0032] Figure 3 A side view of the photovoltaic support structure provided by the utility model;

[0033] Figure 4 A top view of the photovoltaic support structure provided by the utility model;

[0034] Figure 5 A schematic diagram of a section of a frame-type steel truss structure in a photovoltaic support structure provided by the utility model;

[0035] Figure 6 This is a schematic diagram of the construction of the truncated steel truss unit sliding beam in the utility model;

[0036] Figure 7 It is a schematic diagram of the floating construction of the truncated steel truss beam unit in the utility model.

[0037] Marked in the figure are, 1-first rail cable, 2-rail cable anchoring system, 3-frame steel truss structure, 4-wind turbine foundation, 5-wind turbine, 6-photovoltaic panel, 7-upper and lower rail cables, 8-wind turbine tower, 9-mud surface, 10-truncated steel truss unit, 11-sliding beam system, 12-beam-shifting traction floating vessel, 13-water surface. DETAILED DESCRIPTION

[0038] The utility model is further described below in conjunction with the accompanying drawings.

[0039] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0040] Combination Figure 1-Figure 7 As shown, the utility model provides a photovoltaic support structure for offshore wind and solar power generation.

[0041] A photovoltaic support structure for offshore wind and solar power generation comprises an offshore wind farm and photovoltaic panels 6 for generating electricity. The photovoltaic panels 6 are laid in the empty sea area between the wind turbines 5 of the offshore wind farm. The structure also comprises a first rail 1 fixedly connected to the wind turbines 5. The first rail 1 comprises a parallel section in the middle and anchoring sections at both ends. The parallel sections are arranged parallel to the horizontal plane and arranged between the wind turbines 5. The anchoring sections are used to anchor the two ends of the first rail 1 to the seabed. The structure also comprises a frame steel truss structure 3. The frame steel truss structure 3 is fixedly connected to the adjacent first rail 1. The photovoltaic panels 6 are laid on the upper end surface of the frame steel truss structure 3.

[0042] In the present application, an offshore photovoltaic support structure suitable for offshore wind and solar co-field scenarios is proposed, specifically a fixed support structure fixed by a rail cable anchoring system 2. Compared with the existing fixed pile-based photovoltaic structure, the support structure of the present application, specifically including a first rail cable 1 and a frame-type steel truss structure 3, is easy to implement, has a small amount of engineering, low construction cost, and can be applied to deeper sea areas. When it is applied to construction near an existing wind farm, the existing wind farm is not disturbed by pile soil. Specifically, the rail cable anchoring system 2 is arranged below the mud surface 9 on the seabed.

[0043] The first rail cable 1 is in a tensioned state during the construction period and the power generation operation. The strength of the steel cable used can support the dead weight of the designed frame steel truss structure 3 and the photovoltaic panel 6, and meet the load displacement requirements under various design conditions.

[0044] In this embodiment, four adjacent wind turbines 5 are formed into a unit, and the four wind turbines 5 in a unit are connected in a rectangular shape, and a first rail 1 parallel section is set between the wind turbines 5 at both ends of the long side of the rectangle. According to this standard, since the wind turbines 5 are all at the end positions of a unit, there is no wind turbine 5 in the middle of a unit, which is convenient for laying photovoltaic panels 6 and also avoids the difficulty of repairing or maintaining the wind turbines 5 after the wind power is constructed at the same site; further, the first rail 1 is set corresponding to the long side of the rectangle to better support the photovoltaic panels 6.

[0045] In this embodiment, in one unit, the first rail cable 1 corresponding to the long side of the rectangle includes two groups of upper and lower rail cables 7, each group of upper and lower rail cables 7 is composed of two steel cables, the two steel cables are arranged in parallel in the parallel section, and the upper and lower ends of the frame steel truss structure 3 are respectively connected and fixed to the upper and lower parallel steel cables. The first rail cable 1 is arranged as above, so that the upper and lower ends of the frame steel truss structure 3 are fixed on the steel cables to provide a good installation and fixing effect, which is convenient for providing long-term positioning and support effects for the frame steel truss structure 3 during photovoltaic power generation operations.

[0046] In this embodiment, two steel cables of each set of upper and lower rail cables 7 are anchored together in one rail cable anchoring system 2. As can be seen from the above, each set of upper and lower rail cables 7 is arranged between wind turbines, that is, the aforementioned parallel section includes upper and lower parallel steel cables. In order to simplify the construction and reduce the engineering workload, two steel cables of a set of upper and lower rail cables 7 can be anchored together in one rail cable anchoring system 2.

[0047] In this embodiment, within one unit, the frame-type steel truss structure 3 is divided into multiple sections of truncated steel truss beam units 10 along the long side of the rectangle, and the multiple sections of truncated steel truss beam units 10 are fixedly connected. Multiple sections of truncated steel truss beam units 10 are fixedly connected to form the frame-type steel truss structure 3, which is convenient for the installation of the photovoltaic panel 6 support structure during construction; and combined with the frame-type steel truss structure 3 being divided into multiple sections along the long side of the rectangle, during construction, the first rail 1 can be used as a beam moving track for installing the truncated steel truss beam unit 10, so as to provide guidance and upper support for the installation process of the truncated steel truss beam unit 10, so as to facilitate installation and construction.

[0048] In some embodiments, within a unit, the horizontal heights of the first rails 1 corresponding to the two long sides of the rectangle are different. Considering that the sunlight environment at the construction site is different, the angle of the photovoltaic panel 6 is usually set accordingly, and the horizontal heights of the first rails 1 corresponding to the two long sides of the rectangle are different, so that the installed photovoltaic panel 6 reaches a preset angle. Obviously, the horizontal height difference here is related to the inclination angle of the photovoltaic panel 6.

[0049] In this embodiment, the height of the parallel section of the first rail cable 1 is located above the designed high water level of the wind farm, that is, it is always above the water surface 13. The wind turbine 5 includes a wind turbine foundation 4 at the lower end and a wind turbine tower 8 at the upper end. The first rail cable 1 is fixedly connected to the wind turbine foundation 4. The height of the parallel section of the first rail cable 1 is set above the designed high water level of the wind farm to ensure that the photovoltaic panel 6 is not affected by the ocean current and waves as much as possible; the first rail cable 1 is installed on the wind turbine foundation 4 to reduce the force influence of the photovoltaic support structure on the wind turbine tower 8.

[0050] In this embodiment, the photovoltaic panel 6 output cable is connected to the wind turbine 5 output cable through the frame steel truss structure 3. The aforementioned support structure is the frame steel truss structure 3, which is convenient for laying cables inside, and the photovoltaic panel 6 is laid in one unit, that is, in four wind turbines 5, which is convenient for connecting the photovoltaic panel 6 output cable and the wind turbine 5 output cable, greatly reducing the project cost.

[0051] The following briefly discusses the construction method of the photovoltaic support structure used for offshore wind and solar power generation in this application, including the following steps:

[0052] S1. Use a small pile-driving ship to install the rail cable anchoring system 2;

[0053] S2. Use a small construction ship to install the first rail cable 1 between the two wind turbines 5. The first rail cable 1 is connected to the wind turbine foundation 4 for positioning. Both ends of the first rail cable 1 are installed on the rail cable anchoring system 2. Tighten the first rail cable 1 to make the first rail cable 1 reach the required internal force and linear state.

[0054] S3, installing the truncated steel truss beam unit 10 on the first rail cable 1 through the sliding beam transfer system 11, and starting from the vicinity of the wind turbines 5 at both ends by two beam transfer traction floating vessels 12 to symmetrically tow and move the truncated steel truss beam unit 10;

[0055] S4, when the cut steel truss beam unit 10 is moved to the designated position, the two beam-moving traction floating vessels 12 simultaneously float and lift the cut steel truss beam unit 10 to a certain height, so that the upper and lower ends of the cut steel truss beam unit 10 are respectively installed on the upper and lower rail cables 7;

[0056] S5, the two beam-shifting traction floating vessels 12 return to prepare to traction and float the next section of the steel truss beam unit 10;

[0057] S6. After all the truncated steel truss beam units 10 are installed in place, they are assembled by welding or riveting to form a frame-type steel truss structure 3;

[0058] S7, using a photovoltaic module hoisting ship crane to hoist and install the photovoltaic panel 6 on the installed frame steel truss structure 3;

[0059] S8. Install cables in the frame-type steel truss structure 3 and connect them to the submarine cables sent out by the wind turbine generator set.

[0060] For ease of understanding, in this embodiment, the sliding beam system 11 refers to the stage steel truss beam unit 10 being slidably connected to the first rail cable 1, and the first rail cable 1 provides horizontal positioning for it. When it moves to the position just below the installation position, the beam-moving traction floating vessel 12 floats the truncated steel truss beam unit 10 to position it vertically, thereby installing the truncated steel truss beam unit 10 on the first rail cable 1. Adjacent truncated steel truss beam units 10 are assembled by welding or riveting, etc., to form a frame-type steel truss structure 3.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A photovoltaic support structure for offshore wind and solar power generation, comprising an offshore wind farm and photovoltaic panels (6) for generating electricity, wherein the photovoltaic panels (6) are laid in the empty sea area between wind turbines (5) of the offshore wind farm, and wherein the photovoltaic panels (6) are characterized in that: It also comprises a first rail cable (1) fixedly connected to the wind turbine generator set (5), the first rail cable (1) comprising a parallel section in the middle and anchoring sections at both ends, the parallel section being arranged parallel to the horizontal plane and arranged between the wind turbine generator sets (5), and the anchoring sections being used to anchor both ends of the first rail cable (1) to the seabed; It also comprises a frame-type steel truss structure (3), the frame-type steel truss structure (3) is fixedly connected to the adjacent first rail cable (1), and a photovoltaic panel (6) is laid on the upper end surface of the frame-type steel truss structure (3).

2. The photovoltaic support structure for offshore wind and solar power generation as claimed in claim 1 is characterized in that: Four adjacent wind turbine generator sets (5) form a unit, the four wind turbine generator sets (5) in a unit are connected in a rectangular shape, and parallel sections of the first rail cable (1) are arranged between the wind turbine generator sets (5) at both ends of the long side of the rectangle.

3. The photovoltaic support structure for offshore wind and solar power generation as claimed in claim 2 is characterized in that In one unit, the first rail cable (1) corresponding to the long side of the rectangle includes two groups of upper and lower rail cables (7), each group of upper and lower rail cables (7) is composed of two steel cables, and the two steel cables are arranged in parallel in the upper and lower parallel sections, and the upper and lower ends of the frame-type steel truss structure (3) are respectively connected and fixed to the upper and lower parallel steel cables.

4. The photovoltaic support structure for offshore wind and solar power generation as claimed in claim 3 is characterized in that: The two steel cables of each set of upper and lower rail cables (7) are anchored together in a rail cable anchoring system (2).

5. The photovoltaic support structure for offshore wind and solar power generation as claimed in claim 2, characterized in that In one unit, the frame-type steel truss structure (3) is divided into a plurality of truncated steel truss beam units (10) along the long side direction of the rectangle, and the plurality of truncated steel truss beam units (10) are fixedly connected.

6. The photovoltaic support structure for offshore wind and solar power generation as claimed in claim 2, characterized in that: In one unit, the first rails (1) corresponding to the two long sides of the rectangle have different horizontal heights.

7. The photovoltaic support structure for offshore wind and solar power generation as claimed in claim 1, characterized in that: The height of the parallel section of the first rail cable (1) is located above the designed high water level of the wind farm.

8. The photovoltaic support structure for offshore wind and solar power generation as claimed in claim 1, characterized in that: The wind turbine generator set (5) comprises a wind turbine generator set foundation (4) at the lower end and a wind turbine generator set tower (8) at the upper end, and the first rail cable (1) is fixedly connected to the wind turbine generator set foundation (4).

9. The photovoltaic support structure for offshore wind and solar power generation according to any one of claims 1 to 8, characterized in that: The photovoltaic panel (6) output cable is connected to the wind turbine generator set (5) output cable via the frame-type steel truss structure (3).

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