Offshore photovoltaic system

Abstract

The utility model provides an offshore photovoltaic system, and relates to the technical field of offshore photovoltaic power generation. The system comprises a plurality of photovoltaic modules, wherein each photovoltaic module comprises at least one supporting part and a plurality of photovoltaic panels; the supporting part comprises a first supporting structure and a second supporting structure, the first supporting structure is arranged in the direction perpendicular to the sea level, the first face of the second supporting structure is fixedly connected to the second end of the first supporting structure, and the multiple photovoltaic panel arrays are laid on the second face of the second supporting structure; an included angle of 10-20 degrees is formed between the second surface of the second supporting structure and the sea level; a preset distance exists between the photovoltaic area and the coastline, the outer contour of the photovoltaic area is polygonal, the plurality of photovoltaic modules are arranged in the photovoltaic area, and the total area of the projections of the plurality of photovoltaic modules on the photovoltaic area accounts for 90%-98% of the total area of the photovoltaic area. According to the system, the offshore area is fully utilized, and the installation stability and reliability of the system are improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of offshore photovoltaic power generation, in particular to an offshore photovoltaic system. BACKGROUND

[0002] Offshore power generation is a method of converting environmental resources on the sea into electric energy. The offshore resources generally include sea area, offshore wind, offshore solar energy, etc. The utilization of offshore environmental resources has the characteristics of cleanness and resource availability, and the development of offshore resources has good application prospects.

[0003] At present, the main development direction of the utilization of offshore resources is offshore wind power projects, and the utilization of offshore solar energy is still in the exploratory stage. The effective and reasonable utilization of sea area becomes an important influencing factor for the development of offshore resources. The existing power generation structure includes wind power projects, occupies a large sea area, and has a relatively dispersed structure, resulting in low sea area utilization rate and poor structural stability and reliability.

[0004] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. CONTENT OF THE INVENTION

[0005] Therefore, an offshore photovoltaic system is provided, which can improve the utilization rate of the offshore area, improve the economy of the system, ensure the stability of the installation of the structure in the system, and improve the reliability of the system.

[0006] Other characteristics and advantages of the present disclosure will become apparent from the following detailed description, or will be learned by practice of the present disclosure.

[0007] According to one aspect of the present disclosure, an offshore photovoltaic system is provided, which comprises:

[0008] a plurality of photovoltaic assemblies, each of which comprises at least one support part and a plurality of photovoltaic panels arranged on the support part, the photovoltaic panels being used to convert solar energy into electric energy;

[0009] The support part comprises a first support structure and a second support structure, the first support structure is arranged in a direction perpendicular to the sea level, the first end of the first support structure is fixed below the sea level, the second end of the first support structure protrudes above the sea level, the first surface of the second support structure is fixedly connected to the second end of the first support structure, a plurality of photovoltaic panels are arrayed on the second surface of the second support structure, and the second surface of the second support structure has an included angle of 10°-20° with the sea level;

[0010] The photovoltaic region has a preset distance from the coastline, and an outer contour of the photovoltaic region is a polygon. A plurality of photovoltaic components are arranged in the photovoltaic region, and a total area of projections of the plurality of photovoltaic components on the photovoltaic region accounts for 90% to 98% of a total area of the photovoltaic region.

[0011] In an exemplary embodiment of the present disclosure, an area of the photovoltaic region is 4.44km 2 to 8.44km 2 .

[0012] In an exemplary embodiment of the present disclosure, an area of the photovoltaic region is 4.44km 2 to 8.44km 2 .

[0013] In an exemplary embodiment of the present disclosure, a minimum value of the preset distance of the photovoltaic region from the coastline is 1km to 3km, and a maximum value of the preset distance of the photovoltaic region from the coastline is 4.8km to 6.8km.

[0014] In an exemplary embodiment of the present disclosure, a minimum value of the preset distance of the photovoltaic region from the coastline is 2km, and a maximum value of the preset distance of the photovoltaic region from the coastline is 5.8km.

[0015] In an exemplary embodiment of the present disclosure, the number of the support parts in one photovoltaic component is one, and the first support structure is a pile foundation. The number of the pile foundations in each support part is 2 to 8.

[0016] In an exemplary embodiment of the present disclosure, the number of the support parts in one photovoltaic component is two, and the two second support structures are connected to each other. The first support structure is a pile foundation. The number of the pile foundations in each support part is 4 to 20.

[0017] In an exemplary embodiment of the present disclosure, the number of the pile foundations is 100 to 200.

[0018] In an exemplary embodiment of the present disclosure, the number of the photovoltaic panels arranged on each second support structure is 100 to 200.

[0019] In an exemplary embodiment of the present disclosure, the photovoltaic region further comprises a plurality of sub-photovoltaic regions and a plurality of channels. The plurality of channels are arranged in a cross manner. At least one photovoltaic component is arranged in each sub-photovoltaic region. Two adjacent sub-photovoltaic regions are separated by one channel.

[0020] The offshore photovoltaic system provided by the present disclosure comprises a plurality of photovoltaic assemblies, the plurality of photovoltaic assemblies are arranged in a photovoltaic area, in a first aspect, the photovoltaic panels in the photovoltaic assemblies have an included angle with the sea level, which improves the utilization rate of the photovoltaic panels on the solar energy; in a second aspect, the photovoltaic area is away from the coastline by a preset distance, the outer contour of the photovoltaic area is a polygon, and the total area of the projections of the plurality of photovoltaic assemblies on the photovoltaic area accounts for 90% to 98% of the total area of the photovoltaic area, the photovoltaic assemblies are arranged in the photovoltaic area, which can improve the utilization rate of the offshore area, meanwhile, the photovoltaic assemblies arranged in the photovoltaic area have a compact structure, and the interference between the plurality of photovoltaic assemblies is avoided, the photovoltaic assemblies have high installation stability, and thus the reliability of the system is improved.

[0021] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure. It is apparent that the accompanying drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0023] Figure 1 It is a plane structure schematic diagram of an offshore photovoltaic system in an exemplary embodiment of the present disclosure.

[0024] Figure 2 It is a side view of a photovoltaic assembly in an exemplary embodiment of the present disclosure.

[0025] Figure 3 It is a perspective structure schematic diagram of a photovoltaic assembly in an exemplary embodiment of the present disclosure.

[0026] In the drawings, the reference signs are explained as follows:

[0027] 10, photovoltaic assembly; 11, support part; 110, first support structure; 111, first end of the first support structure; 112, second end of the first support structure; 120, second support structure; 121, first surface of the second support structure; 122, second surface of the second support structure; 12, photovoltaic panel; 20, photovoltaic area; 21, sub-photovoltaic area; 22, channel. DETAILED DESCRIPTION

[0028] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations can be implemented in any

[0029] Although relative terms such as "on", "under", etc. are used herein to describe one component's relationship to another component, these terms are used herein to describe the relative position of components in the drawings, and are not necessarily used to describe a specific spatial arrangement of the components. For example, if a component is said to be "on" another component, it can be directly on the other component or intervening components can also be present. In contrast, when a component is referred to as being "directly on" another component, there are no intervening components present. It will be understood that when a structure is "on" another structure, it can be directly on the other structure or it can be indirectly on the other structure through one or more intervening structures.

[0030] The terms "one", "a", "an", "the", and "at least one" are used to mean one or more elements / components / etc.; the term "includes" and the term "comprising", and variations thereof, mean the inclusion of a recited element / component / etc. and the possibility of other elements / components / etc. being present in addition to the recited element / component / etc.; and the term "first", "second", and "third", and the like, are used merely as labels, and are not meant to impose numerical requirements on their objects.

[0031] In the related art, the use of offshore resources is mainly offshore wind power generation, but the structure of the wind power generation system is completely different from that of the photovoltaic power generation system, and the requirements for sea area or structural layout are also quite different. Offshore photovoltaic power generation needs to use solar energy, and solar energy changes with the angle of the sun. Therefore, it is necessary to combine the structural characteristics of photovoltaic modules to improve the utilization rate of the offshore area, and at the same time, the stability of the system becomes an important factor affecting the development of offshore photovoltaic power generation systems. At present, there is little research on improving the utilization rate of offshore resources for offshore photovoltaic.

[0032] Based on this, the embodiment of the present disclosure provides an offshore photovoltaic system, as shown in Figure 1 As shown in Figure 2 The system comprises a plurality of photovoltaic modules 10 and a photovoltaic area 20.

[0033] Each photovoltaic assembly 10 comprises at least one support part 11 and a plurality of photovoltaic panels 12 arranged on the support part 11, the photovoltaic panels 12 being configured to convert solar energy into electric energy; the support part 11 comprises a first support structure 110 and a second support structure 120, the first support structure 110 is arranged along a direction perpendicular to the sea level, a first end 111 of the first support structure 110 is fixed below the sea level, a second end 112 of the first support structure 110 extends above the sea level, a first surface 121 of the second support structure 120 is fixedly connected to the second end 112 of the first support structure 110, the plurality of photovoltaic panels 12 are arranged on a second surface 122 of the second support structure 120, the second surface 122 of the second support structure 120 forms an angle of 10°-20° with the sea level; the photovoltaic area 20 is located at a predetermined distance from the coastline, the outer contour of the photovoltaic area 20 is a polygon, the plurality of photovoltaic assemblies 10 are arranged in the photovoltaic area 20, and the total area of the projection of the plurality of photovoltaic assemblies 10 on the photovoltaic area 20 accounts for 90%-98% of the total area of the photovoltaic area 20.

[0034] The offshore photovoltaic system provided by the present disclosure comprises a plurality of photovoltaic assemblies 10 arranged in a photovoltaic area 20, the photovoltaic area 20 is located at a predetermined distance from the coastline, the outer contour of the photovoltaic area 20 is a polygon, which facilitates the installation of the photovoltaic assemblies 10 in the photovoltaic area 20, thereby improving the installation stability of the photovoltaic assemblies 10 and further improving the reliability of the system; the total area of the projection of the plurality of photovoltaic assemblies 10 on the photovoltaic area 20 accounts for 90%-98% of the total area of the photovoltaic area 20, the photovoltaic assemblies 10 can effectively utilize the offshore area, while ensuring that the components do not interfere with each other, thereby improving the utilization rate of the sea area and the compactness and economy of the system; the photovoltaic assemblies 10 form an angle with the sea level, which further improves the utilization rate and absorption rate of solar energy by the assemblies and improves the working efficiency of the system.

[0035] The various parts of the offshore photovoltaic system provided by the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings:

[0036] In the embodiments provided by the present disclosure, as shown in Figure 1 , in combination Figure 2 , the system comprises a plurality of photovoltaic assemblies 10, each photovoltaic assembly 10 comprises at least one support part 11 and a plurality of photovoltaic panels 12 arranged on the support part 11, the photovoltaic panels 12 being configured to convert solar energy into electric energy.

[0037] The support part 11 comprises a first support structure 110 and a second support structure 120, the first support structure 110 is arranged along a direction perpendicular to the sea level, a first end 111 of the first support structure is fixed below the sea level, a second end 112 of the first support structure extends above the sea level, a first surface 121 of the second support structure is fixedly connected to the second end 112 of the first support structure, a plurality of photovoltaic panels 12 are arrayed on a second surface 122 of the second support structure, and the second surface 122 of the second support structure has an included angle of 10°-20° with the sea level.

[0038] The first support structure 110 can be composed of a plurality of pile foundations, the axes of the pile foundations are arranged along a direction perpendicular to the sea level, the axes of the pile foundations can be parallel or substantially parallel to each other, and the pile foundations can be structures such as steel piles, concrete piles, or reinforced concrete piles. The concrete piles can be PHC (prestressed high-intensity concrete) piles. The materials and sizes of the pile foundations of the first support structure 110 can be the same or different, for example, the materials and sizes of the pile foundations can be determined according to the positions of the pile foundations in the first support structure 110 and the magnitudes of the loads borne by the pile foundations. In addition, the materials and sizes of the pile foundations in different first support structures 110 can also be the same or different, for example, steel piles can be used in shallow sea areas, and PHC piles can be used in offshore areas (except for shallow sea areas). The above embodiments do not specifically limit the specific arrangement areas of the first support structure 110, and the materials and sizes of the pile foundations in the first support structure 110 can be selected and adjusted according to actual design requirements.

[0039] The first end 111 of the first support structure is fixed in the sea, that is, one end of the pile foundation is sunk or inserted into the sea to fix the position of the pile foundation, so that the second end 112 of the first support structure has a bearing capacity; the second end 112 of the first support structure extends above the sea level, that is, the other end of the pile foundation extends above the sea level to support the second support structure 120.

[0040] The second support structure 120 has a first surface 121 and a second surface 122, the first surface 121 is a surface of the second support structure 120 facing the sea level, the second surface 122 is a surface of the second support structure 120 away from the sea level, and the second surface 122 of the second support structure is a laying plane of the photovoltaic panels 12. The first surface 121 of the second support structure is fixedly connected to the second end 112 of the first support structure, so that the first support structure 110 provides a support force for the second support structure 120.

[0041] The first support structure 110 and the second support structure 120 can be connected by one or a combination of multiple connection modes such as hinging, welding, riveting, etc. The specific connection mode can be selected according to the strength requirement of the assembly. The connection position of the first support structure 110 and the second support structure 120 is projected on the sea level within the projection of the first face 121 of the second support structure on the sea level, so as to ensure that the first support structure 110 forms an effective supporting effect on the second support structure 120.

[0042] The second support structure 120 can be a grid structure composed of multiple truss structures, and the second support structure 120 can be a cuboid or a cuboid-like shape. The second support structure 120 has an included angle of 10°-20° with the sea level. Since the photovoltaic panel 12 needs to be set according to the angle of the sun, and the photovoltaic panel 12 is laid on the second face 122, when the second support structure 120 has an included angle with the sea level, the photovoltaic panel 12 also has an included angle with the sea level, which can improve the absorption rate and utilization rate of the photovoltaic panel 12 to solar energy. However, an excessively large included angle is not conducive to the stability of the second support structure 120 on the sea, and an excessively small included angle is not conducive to the utilization rate of the photovoltaic panel 12 to solar energy. Therefore, the included angle between the second support structure 120 and the sea level can be 10°-20°, for example, the included angle between them can be 10°, 11°, 12°, 13°, 14°, 15°, 16°, 17°, 18°, 19° or 20°.

[0043] In order to ensure that the photovoltaic panel 12 is not eroded by seawater and improve the service life of the photovoltaic panel 12, a certain spacing is usually required between the second support structure 120 and the sea level, which is greater than or equal to 1 m, such as 1 m, 2 m, 3 m, 4 m, 5 m, etc. The pre-set spacing can be adjusted according to the specific structural requirements of the support structure. Specifically, the spacing needs to ensure that the photovoltaic panel 12 is not eroded by seawater while also ensuring the structural stability of the support part 11. In the present disclosure, the spacing between the second support structure 120 and the sea level refers to the distance between the part of the second support structure 120 closest to the sea level and the sea level, i.e. the minimum distance between the second support structure 120 and the sea level.

[0044] As shown in FIG. 1, the support part 11 is connected to the second support structure 120. Figure 2 As shown in FIG. 1, the support part 11 is connected to the second support structure 120. Figure 3The second surface 122 of the second support structure 120 is provided with the photovoltaic panels 12. Since the support part 11 provides a fixing and supporting structure for the photovoltaic panels 12, in order to ensure the structural strength of the support part 11, the photovoltaic panels 12 provided on the second support structure 120 should not be too many, but in order to improve the utilization rate of the sea solar energy of one photovoltaic assembly 10 and avoid the waste of the space of the second support structure 120, the photovoltaic panels 12 provided on the second support structure 120 should not be too few. In the present disclosure, the number of the photovoltaic panels 12 provided on the second support structure 120 can be 100-200, for example, can be 100, 120, 140, 160, 180 or 200, and the plurality of photovoltaic panels 12 can be arrayed and laid on the second surface 122 of the second support structure 120 to ensure the structural strength and improve the space utilization rate of the photovoltaic panels 12 on the second surface 122 of the second support structure 120, wherein the specific number of the photovoltaic panels 12 can be selected and adaptively adjusted according to the actual area of the photovoltaic panels 12 and the structure of the second support part 11.

[0045] In the embodiments provided in the present disclosure, as shown in Figure 1 The photovoltaic area 20 is provided with a plurality of photovoltaic assemblies 10, and the total area of the projections of the plurality of photovoltaic assemblies 10 on the photovoltaic area 20 accounts for 90%-98% of the total area of the photovoltaic area 20.

[0046] The photovoltaic area 20 is provided with a plurality of photovoltaic assemblies 10, and the total area of the projections of the plurality of photovoltaic assemblies 10 on the photovoltaic area 20 accounts for 90%-98% of the total area of the photovoltaic area 20.

[0047] The minimum preset distance between the photovoltaic area 20 and the coastline is 1km to 3km, such as 1km, 1.2km, 1.4km, 1.6km, 1.8km, 2km, 2.2km, 2.4km, 2.6km, 2.8km, or 3km; the maximum preset distance between the photovoltaic area 20 and the coastline is 4.8km to 6.8km, such as 4.8km, 5km, 5.2km, 5.4km, 5.6km, 5.8km, 6km, 6.2km, 6.4km, 6.6km, or 6.8km. In this disclosure, the minimum preset distance can refer to the minimum vertical distance from the coastline on the outer contour line of the photovoltaic area 20, and the maximum preset distance can refer to the maximum vertical distance from the coastline on the outer contour line of the photovoltaic area 20. The specific locations of the minimum and maximum preset distances on the photovoltaic area 20 can be determined based on the specific shape and area of ​​the photovoltaic area 20.

[0048] In some embodiments, in order to ensure the optimal installation location of the photovoltaic modules 10 within the photovoltaic area 20, that is, to improve the utilization rate of marine solar energy and marine area while reducing the impact of the harsh marine environment on the modules, the minimum preset distance between the photovoltaic area 20 and the coastline can typically be 2km; the maximum preset distance between the photovoltaic area 20 and the coastline can typically be 5.8km.

[0049] In this disclosure, photovoltaic area 20 refers to an area set up on sea surface for implementing and deploying offshore photovoltaic systems. Photovoltaic area 20 refers to an area including the installation of photovoltaic modules 10, which includes the support 11 and photovoltaic panels 12 within the photovoltaic modules 10, and may also include other auxiliary devices such as transformer substations and inverters for voltage conversion. These auxiliary devices are used to assist the system in generating electricity, and are all set up within photovoltaic area 20.

[0050] In addition, such as Figure 1 As shown, the photovoltaic area 20 also includes multiple waterways 22. No photovoltaic modules 10 are installed in any of the waterways 22. The waterways 22 can be used for operation and maintenance, and for vessel passage. The multiple waterways 22 are intersecting each other, dividing the photovoltaic area 20 into multiple sub-photovoltaic areas 21. Each sub-photovoltaic area 21 contains at least one photovoltaic module 10, and adjacent sub-photovoltaic areas 21 are separated by a waterway 22.

[0051] In some embodiments, the number of sub-photovoltaic regions 21 can be 5 to 10. For example, the number of sub-photovoltaic regions 21 can be 5, 6, 7, 8, 9 or 10. The outer contour shape and area of ​​each sub-photovoltaic region 21 can be designed according to the installation requirements and construction sequence of the photovoltaic module 10.

[0052] In the present disclosure, the outer contour of the photovoltaic region 20 can be polygonal. It should be noted that the outer contour of the photovoltaic region 20 being polygonal can mean that each side of the outer contour is a straight line or a line similar to a straight line. Since the photovoltaic assembly 10 is arranged in the photovoltaic region 20, the outer contour of the photovoltaic region 20 composed of a plurality of photovoltaic assemblies 10 can be a polygon in the strict sense, or can be a polygon similar to the polygon, such as a sawtooth shape or a wave shape or other irregular shape. It should be understood that the polygonal photovoltaic region 20 provided in the present disclosure includes the polygonal shape described above. The outer contour of the photovoltaic region 20 in the present disclosure is polygonal, which can improve the rationality of the layout of the photovoltaic region 20 and the effectiveness of the use of the sea area, and at the same time can reduce the difficulty of arranging the channel 22, facilitating the installation and construction of the photovoltaic assembly 10.

[0053] In order to improve the rationality and compactness of the layout of the photovoltaic region 20 of the photovoltaic assembly 10 and achieve the effect of improving the solar energy absorption rate, the total area of the projection of the plurality of photovoltaic assemblies 10 on the photovoltaic region 20 accounts for 90% to 98% of the total area of the photovoltaic region 20, for example, can be 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97% or 98%. Among them, since the photovoltaic panel 12 is laid on the second surface 122 of the second support structure, when the photovoltaic panel 12 is in a flat state relative to the second surface 122 of the second support structure, the projection of the photovoltaic assembly 10 on the photovoltaic region 20 can refer to the projection of the second surface 122 of the second support structure in the photovoltaic assembly 10 on the sea level, or the projection of the photovoltaic panel 12 on the sea level; when the photovoltaic panel 12 has an angle relative to the second surface 122 of the second support structure, it can refer to the projection of the photovoltaic panel 12 on the sea level.

[0054] In some embodiments, in order to provide a larger area for the arrangement of the photovoltaic assembly 10, the area of the photovoltaic region 20 can be 4.44km 2 ~ 8.44km 2 , for example, can be 4.44km 2 , 5.44km 2 , 6.44km 2 , 7.44km 2 or 8.44km 2 , etc. Among them, the projection area of the photovoltaic assembly 10 on the photovoltaic region 20 can be 4.2km 2 ~ 8.2km 2 , for example, can be 4.2km 2 , 5.2km 2 , 6.2km 2 , 7.2km 2or 8.2km 2 etc.

[0055] In some embodiments, the area of the photovoltaic region 20 can be 6.44km 2 The corresponding photovoltaic assembly 10 can have a projected area in the photovoltaic region 20 of 6.2km 2 The total projected area of the photovoltaic assembly 10 in the photovoltaic region 20 accounts for about 96% of the total area of the photovoltaic region 20.

[0056] When the photovoltaic region 20 and the area projected by the photovoltaic assembly 10 in the photovoltaic region 20 are within the range of the above embodiments, the first support structure 110 can be composed of a plurality of pile foundation structures, the plurality of pile foundation structures are arranged in the photovoltaic region 20, and the number of pile foundations can be 100-200. Within this number range, the pile foundations can ensure the support strength of the first support structure 110, and can also reduce the number of pile foundations, improve the economy of the system, and reduce the construction difficulty of the first support structure 110.

[0057] In some embodiments, the number of support parts 11 in one photovoltaic assembly 10 is one; the first support structure 110 is a pile foundation, and the number of pile foundations in each support part 11 is 2-8.

[0058] For example, when the number of pile foundations is 2, the two pile foundations constitute the first support structure 110, and the elevations of the two pile foundations are different. When the first support structure 110 supports the second support structure 120, the second support structure 120 and the sea level have a preset angle due to the different elevations of the two pile foundations.

[0059] For example, when the number of pile foundations is 4, every two pile foundations can form a pile foundation group, the elevations of the pile foundations in each pile foundation group are the same, and the elevations of the pile foundations in different pile foundation groups are different. When the first support structure 110 supports the second support structure 120, the second support structure 120 and the sea level have a preset angle due to the different elevations of the two pile foundation groups.

[0060] For example, when the number of pile foundations is 8, every two pile foundations can form a pile foundation group, the elevations of the pile foundations in each pile foundation group are the same, and the elevations of the pile foundations in three pile foundation groups increase or decrease successively. When the first support structure 110 supports the second support structure 120, the second support structure 120 and the sea level have a preset angle due to the different elevations of the three pile foundation groups, and the pile foundation group in the middle can disperse the load borne by the pile foundation groups on both sides, so that the first support structure 110 forms a uniform force structure, thereby improving the service life of the first support structure 110.

[0061] The elevation of the pile foundation can refer to the height between the top of the pile foundation and the sea level, and the top of the pile foundation is the end of the pile foundation extending above the sea level.

[0062] In some embodiments, the number of support portions 11 in one photovoltaic assembly 10 is two, and the two second support structures 120 are connected to each other; the first support structure 110 is a pile foundation, and the number of pile foundations in each support portion 11 is 4-20. In this embodiment, the support portion 11 of one photovoltaic assembly 10 can include two or more support portions 11, that is, a plurality of support portions 11 are connected to form an integral support, especially for the second support structure 120, at least two second support structures 120 are connected to each other to form an integral second support structure 120, so as to provide the required support area for a plurality of photovoltaic panels 12 and meet the regional design requirements.

[0063] The connection of the plurality of second support portions 11 to each other can be achieved by one or more of butt joint connection, buckling plate connection, expansion screw connection, angle iron connection, etc., which can be selected according to the specific connection requirements of the structure and the region provided by the structure.

[0064] In some embodiments, one photovoltaic assembly 10 includes two support portions 11, the second support structures 120 in the two support portions 11 are connected to each other, and the first support structure 110 is a pile foundation. Of course, the preset angle formed between the two different second support structures 120 and the sea level can be the same or different, but there is no overlap between the projections of the second faces 122 of the two second support structures 120 on the sea level in the same photovoltaic assembly 10, that is, the two second support structures 120 do not interfere with each other.

[0065] In the embodiment, when the total number of pile foundations in the support portion 11 is 4, two pile foundations are arranged in each support portion 11, the two pile foundations in the same support portion 11 constitute the first support structure 110, and the elevations of the two pile foundations in the same support portion 11 are different. When the first support structure 110 supports the second support structure 120, the second support structure 120 has a preset angle with the sea level due to the different elevations of the two pile foundations.

[0066] In the embodiment, when the total number of pile foundations in the support portion 11 is 8, four pile foundations are arranged in each support portion 11, the four pile foundations in the same support portion 11 constitute the first support structure 110, and in the same support portion 11, every two pile foundations can form a pile foundation group, the elevations of the pile foundations in each pile foundation group are the same, and the elevations of the pile foundations in different pile foundation groups are different. When the same first support structure 110 supports the second support structure 120, the same second support structure 120 has a preset angle with the sea level due to the different elevations of the two pile foundation groups.

[0067] Wherein, if the total number of pile foundations in each support part 11 is 16, eight pile foundations are arranged in each support part 11, and the eight pile foundations in the same support part 11 form the first support structure 110. In the same support part 11, every two pile foundations can form a pile foundation group, and the elevations of the pile foundations in the three pile foundation groups increase or decrease in turn. When the first support structure 110 supports the second support structure 120, the elevations of the three pile foundation groups in the same support part 11 are different, so that the second support structure 120 has a preset angle with the sea level, and the pile foundation group in the middle can disperse the load borne by the pile foundation groups on both sides, so that the first support structure 110 forms a uniform stress structure, thereby improving the service life of the first support structure 110.

[0068] Wherein, if the total number of pile foundations in each support part 11 is 20, ten pile foundations are arranged in each support part 11, and the ten pile foundations in the same support part 11 form the first support structure 110. In the same support part 11, three pile foundation groups can be formed, and the number of pile foundations in the three pile foundation groups can be three, four and three in turn. The elevations of the pile foundations in the three pile foundation groups increase or decrease in turn. When the first support structure 110 supports the second support structure 120, the elevations of the three pile foundation groups in the same support part 11 are different, so that the second support structure 120 has a preset angle with the sea level, and the pile foundation group in the middle can disperse the load borne by the pile foundation groups on both sides, so that the first support structure 110 forms a uniform stress structure, thereby further improving the service life of the first support structure 110.

[0069] It should be noted that, whether one photovoltaic module 10 includes one support part 11 or one photovoltaic module 10 includes two support parts 11, the number of pile foundations in the first support structure 110 can be within the above range, and the elevations, arrangement order and arrangement mode of the pile foundations can be adaptively adjusted according to the support effect or support point of the first support structure 110 on the second support structure 120, which will not be listed one by one here.

[0070] The offshore photovoltaic system provided by the present disclosure comprises a plurality of photovoltaic components 10 arranged in a photovoltaic area 20, the photovoltaic area 20 is a preset distance from the coastline, and the outer contour of the photovoltaic area 20 is a polygon, which facilitates the installation of the photovoltaic components 10 in the photovoltaic area 20, thereby improving the installation stability of the photovoltaic components 10, and further improving the reliability of the system; the total area of the projection of the plurality of photovoltaic components 10 on the photovoltaic area 20 accounts for 90% to 98% of the total area of the photovoltaic area 20, the photovoltaic components 10 can effectively utilize the offshore area, improve the utilization rate of the sea area while ensuring that each component does not interfere, improve the compactness and economy of the system; the photovoltaic components 10 and the sea level have an included angle, which further improves the utilization rate and absorption rate of the components to solar energy, and improves the working efficiency of the system.

[0071] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure following the general principles thereof and including such departures from the present disclosure that come within known use or custom in the art. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. An offshore photovoltaic system, characterized in that, The utility model relates to a photovoltaic power station, comprising: a plurality of photovoltaic assemblies, each of which comprises at least one support part and a plurality of photovoltaic panels arranged on the support part, the photovoltaic panels being used to convert solar energy into electric energy; wherein the support part comprises a first support structure and a second support structure, the first support structure being arranged in a direction perpendicular to the sea level, a first end of the first support structure being fixed below the sea level, a second end of the first support structure extending out of the sea level, a first surface of the second support structure being fixedly connected to the second end of the first support structure, a plurality of the photovoltaic panels being arrayed on a second surface of the second support structure, the second surface of the second support structure having an included angle of 10°-20° with the sea level; a photovoltaic area, the photovoltaic area having a preset distance from a coastline, and the photovoltaic area having a polygonal outer contour, a plurality of the photovoltaic assemblies being arranged in the photovoltaic area, the total area of the projections of the plurality of the photovoltaic assemblies on the photovoltaic area accounting for 90%-98% of the total area of the photovoltaic area.

2. The offshore photovoltaic system of claim 1, wherein, The area of the photovoltaic region is 4.44 km 2 ~ 8.44 km 2 .

3. The offshore photovoltaic system of claim 2, wherein, The photovoltaic assembly has a projected area on the photovoltaic region of 4.2 km 2 ~ 8.2 km 2 .

4. The offshore photovoltaic system of claim 1, wherein, The minimum value of the preset distance of the photovoltaic area from the coastline is 1km-3km, and the maximum value of the preset distance of the photovoltaic area from the coastline is 4.8km-6.8km.

5. The offshore photovoltaic system of claim 4, wherein, The minimum value of the preset distance of the photovoltaic area from the coastline is 2km, and the maximum value of the preset distance of the photovoltaic area from the coastline is 5.8km.

6. The offshore photovoltaic system of claim 1, wherein, The number of the support parts in one of the photovoltaic assemblies is one, and the first support structure is a pile foundation, the number of the pile foundations in each of the support parts being 2-8.

7. The offshore photovoltaic system of claim 1, wherein, The number of the support parts in one of the photovoltaic assemblies is two, and the two second support structures are connected to each other, the first support structure being a pile foundation, the number of the pile foundations in each of the support parts being 4-20.

8. The offshore photovoltaic system according to claim 6 or 7, characterized in that, The number of the pile foundations is 100-200.

9. The offshore photovoltaic system of claim 1, wherein, The number of the photovoltaic panels arranged on each of the second support structures is 100-200.

10. The offshore photovoltaic system of claim 1, wherein, The photovoltaic area further comprises a plurality of sub-photovoltaic areas and a plurality of navigation channels, the navigation channels being arranged in a cross manner, at least one of the photovoltaic assemblies being arranged in each of the sub-photovoltaic areas, and two adjacent sub-photovoltaic areas being separated by one of the navigation channels.

Images