A floating photovoltaic power generation device and a photovoltaic power generation system

Abstract

The present invention discloses a floating photovoltaic power generation device and a photovoltaic power generation system. The floating photovoltaic power generation device includes a floating body, which includes a plurality of buoys and a truss structure connecting the plurality of buoys, wherein a mounting cavity is provided in the buoy; a photovoltaic panel is arranged in the mounting cavity; an optical fiber array, which includes a plurality of optical fibers, and the optical fibers are used to receive light and transmit the light to the photovoltaic panel; and an optical fiber mounting housing, wherein the optical fiber mounting housing is provided with an array cavity for mounting the optical fiber array. Since the photovoltaic panel is arranged in the mounting cavity inside the buoy, the corrosion of the photovoltaic panel caused by the harsh environment such as splashing seawater, marine salt spray and marine humidity is reduced, the service life of the photovoltaic panel is extended, the replacement or maintenance frequency of the photovoltaic panel is reduced, and the subsequent maintenance cost of the floating photovoltaic power station is reduced. At the same time, the center of gravity of the floating body is lowered, and the stability of the floating body is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of floating photovoltaic power generation devices, and in particular to a floating photovoltaic power generation device and a photovoltaic power generation system. Background Art

[0002] Existing floating photovoltaic power stations usually expose photovoltaic modules directly to the changeable marine environment. In harsh environments such as splashing waves, salt spray and humidity at sea, photovoltaic modules often corrode, resulting in a shortened service life of the photovoltaic modules. Photovoltaic modules need to be replaced or repaired frequently, which increases the subsequent maintenance costs of the floating photovoltaic power station.

[0003] Therefore, how to reduce the subsequent maintenance costs of floating photovoltaic power stations is a technical problem that technicians in this field currently need to solve. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a floating photovoltaic power generation device to reduce the subsequent maintenance cost of the floating photovoltaic power station.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A floating photovoltaic power generation device, comprising:

[0007] A floating body, the floating body comprising a plurality of buoys and a truss structure connecting the plurality of buoys, wherein a mounting cavity is provided inside the buoy;

[0008] A photovoltaic panel is disposed in the installation cavity and is used to convert light energy into electrical energy;

[0009] an optical fiber array, the optical fiber array comprising a plurality of optical fibers for receiving light and transmitting the light to the photovoltaic panel; and

[0010] The optical fiber installation housing is arranged on the floating body, and the optical fiber installation housing is provided with an array cavity for installing the optical fiber array.

[0011] Preferably, in the above-mentioned floating photovoltaic power generation device, the top cover of the optical fiber installation housing is made of transparent material, and the axis of the end of the optical fiber is perpendicular to the plane where the inner wall of the top cover is located.

[0012] Preferably, in the above-mentioned floating photovoltaic power generation device, it also includes a splitter arranged in the buoy, and the multiple optical fibers are gradually converged at one end close to the buoy to form an optical fiber bundle. The buoy is provided with a through hole that allows the optical fiber bundle to pass through, and the splitter is used to support the optical fiber bundle and divide the optical fiber bundle into optical fiber sub-bundles.

[0013] Preferably, in the above-mentioned floating photovoltaic power generation device, it also includes a mounting bracket for mounting the photovoltaic panel, and the arrangement shape of the photovoltaic panel in the mounting cavity matches the shape of the mounting cavity.

[0014] Preferably, in the above-mentioned floating photovoltaic power generation device, the number of the pontoons is three, namely the first pontoon, the second pontoon and the third pontoon, the center of the first pontoon, the center of the second pontoon and the center of the third pontoon are distributed in a triangle, and the truss structure is a double-layer triangular structure.

[0015] Preferably, in the above-mentioned floating photovoltaic power generation device, when the buoy is a steel buoy and the truss structure is a steel truss, the buoy and the truss structure are welded together;

[0016] Alternatively, when the buoy is made of reinforced concrete and the truss structure is made of reinforced concrete, the buoy and the truss structure are cast in one piece.

[0017] Preferably, in the above-mentioned floating photovoltaic power generation device, the optical fiber installation housing is installed on the top of the floating body through a fixed connector, and the projection of the optical fiber installation housing on the horizontal plane can cover the buoy and the truss structure.

[0018] Preferably, in the above-mentioned floating photovoltaic power generation device, maintenance passages are provided between adjacent optical fiber arrays.

[0019] Preferably, the above-mentioned floating photovoltaic power generation device further includes an inverter connected to the photovoltaic panel, a collector line and an embedded step-up transformer connected to the inverter, and a sending submarine cable for transmitting electric energy.

[0020] A photovoltaic power generation system comprises the floating photovoltaic power generation device as described in any one of the above.

[0021] When the floating photovoltaic power generation device provided by the present invention is used, a plurality of buoys are connected by a truss structure, and the buoyancy of the plurality of buoys keeps the buoy in a floating state. Since the optical fiber installation shell is arranged on the buoy, the optical fiber installation shell is provided with an array cavity for installing the optical fiber array. Therefore, after the optical fiber array is installed in the array cavity, each optical fiber of the optical fiber array receives light and transmits the light to the photovoltaic panel, and the photovoltaic panel converts light energy into electrical energy to realize photovoltaic power generation. Since the photovoltaic panel is arranged in the installation cavity inside the buoy, the corrosion of the photovoltaic panel caused by the harsh environment such as splashing seawater, marine salt spray and marine humidity is reduced, the service life of the photovoltaic panel is extended, the replacement or maintenance frequency of the photovoltaic panel is reduced, and the subsequent maintenance cost of the floating photovoltaic power station is reduced. At the same time, after the photovoltaic panel is arranged in the installation cavity inside the buoy, the center of gravity of the buoy can be lowered, thereby improving the stability of the buoy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic structural diagram of a floating photovoltaic power generation device provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the local structure of a splitter provided in an embodiment of the present invention for dividing an optical fiber bundle into optical fiber sub-bundles.

[0025] Among them, 100 is a floating body, 101 is a buoy, 102 is a truss structure, 200 is a photovoltaic panel, 300 is an optical fiber array, 301 is an optical fiber bundle, 302 is an optical fiber sub-bundle, 400 is an optical fiber installation shell, 500 is a splitter, 600 is a mounting bracket, 700 is a fixed connector, 800 is a collector line, and 900 is an embedded step-up transformer. DETAILED DESCRIPTION

[0026] In view of this, the core of the present invention is to provide a floating photovoltaic power generation device to reduce the subsequent maintenance cost of the floating photovoltaic power station.

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figure 1 to Figure 2 As shown, an embodiment of the present invention discloses a floating photovoltaic power generation device, including a floating body 100 , a photovoltaic panel 200 , an optical fiber array 300 and an optical fiber installation housing 400 .

[0029] Among them, the floating body 100 includes multiple buoys 101 and a truss structure 102 connecting the multiple buoys 101, and an installation cavity is provided inside the buoy 101; the photovoltaic panel 200 is arranged in the installation cavity, and is used to convert light energy into electrical energy; the optical fiber array 300, the optical fiber array 300 includes multiple optical fibers, and the optical fibers are used to receive light and transmit the light to the photovoltaic panel 200; the optical fiber installation shell 400 is arranged on the floating body 100, and the optical fiber installation shell 400 is provided with an array cavity for installing the optical fiber array 300.

[0030] When the floating photovoltaic power generation device provided by the present invention is used, a plurality of buoys 101 are connected by a truss structure 102, and the buoyancy of the plurality of buoys 101 makes the floating body 100 float. Since the optical fiber installation housing 400 is arranged on the floating body 100, and the optical fiber installation housing 400 is provided with an array cavity for installing the optical fiber array 300, after the optical fiber array 300 is installed in the array cavity, each optical fiber of the optical fiber array 300 receives light and transmits the light to the photovoltaic panel 200, and the photovoltaic panel 200 converts light energy into electrical energy. Photovoltaic power generation is achieved; since the photovoltaic panel 200 is arranged in the installation cavity inside the buoy 101, the corrosion of the photovoltaic panel 200 caused by harsh environments such as splashing seawater, marine salt spray and marine humidity is reduced, the service life of the photovoltaic panel 200 is extended, the replacement or maintenance frequency of the photovoltaic panel 200 is reduced, and the subsequent maintenance cost of the floating photovoltaic power station is reduced. At the same time, after the photovoltaic panel 200 is arranged in the installation cavity inside the buoy 101, the center of gravity of the float 100 can be lowered, thereby improving the stability of the float 100.

[0031] It should be noted that the above-mentioned installation cavity and array cavity can be in the shape of a cylinder, a triangular prism or a sphere, and as long as the shape can meet the use requirements, it belongs to the protection scope of the present invention; optionally, the installation cavity provided in the embodiment of the present invention is cylindrical, and the array cavity is a triangular prism.

[0032] In addition, the top cover of the optical fiber installation housing 400 is made of transparent material, and the axis of the end of the optical fiber is perpendicular to the plane where the inner wall of the top cover is located, so as to improve the light receiving rate of the optical fiber.

[0033] It should be understood that the above-mentioned transparent material can be acrylic plastic, tempered glass or polycarbonate plastic, etc. As long as the material type can meet the use requirements, it belongs to the protection scope of the present invention.

[0034] Furthermore, the floating photovoltaic power generation device also includes a splitter 500 arranged in the buoy 101, and multiple optical fibers are gradually converged near one end of the buoy 101 to form an optical fiber bundle 301. The buoy 101 is provided with a through hole that allows the optical fiber bundle 301 to pass through, so that after the optical fiber bundle 301 passes through the through hole of the buoy 101, the optical fiber bundle 301 is supported by the splitter 500 and the optical fiber bundle 301 is divided into optical fiber sub-bundles 302, so that the optical fiber sub-bundles 302 are distributed above each photovoltaic panel 200, so that the photovoltaic panel 200 can realize photovoltaic power generation after receiving the light energy transmitted by the optical fiber sub-bundle 302.

[0035] It should be understood that in actual applications, the optical fiber array 300 can form multiple optical fiber bundles 301 according to construction requirements, and each optical fiber bundle 301 is collected in the installation cavity in the nearest buoy 101 to save the use length of the optical fiber and reduce costs.

[0036] The floating photovoltaic power generation device provided by the present invention also includes a mounting bracket 600, so that the photovoltaic panel 200 can be installed in the mounting cavity through the mounting bracket 600; and the arrangement shape of the photovoltaic panel 200 in the mounting cavity is consistent with the shape of the mounting cavity to increase the space utilization rate in the mounting cavity.

[0037] Since the present invention does not specifically limit the shape of the above-mentioned installation cavity, the arrangement shape of the above-mentioned photovoltaic panel 200 in the installation cavity can be spherical, cylindrical or polygonal, etc., as long as the arrangement shape can meet the use requirements, it belongs to the protection scope of the present invention; optionally, the float 101 provided in the embodiment of the present invention is cylindrical, and the installation cavity is cylindrical. Accordingly, the arrangement form of the photovoltaic panel 200 is cylindrical that matches the shape of the installation cavity.

[0038] It should be noted that the present invention does not specifically limit the number of the above-mentioned pontoons 101 and the distribution form of the pontoons 101. As long as the number and distribution form can meet the use requirements, they belong to the protection scope of the present invention; optionally, the number of pontoons provided in the embodiment of the present invention is three, namely the first pontoon, the second pontoon and the third pontoon. The center of the first pontoon, the center of the second pontoon and the center of the third pontoon are distributed in a triangular shape, so that the floating body 100 has higher stability. The truss structure 102 is a double-layer triangular structure to connect the first pontoon, the second pontoon and the third pontoon, so that the floating body 100 has a triangular structure to improve stability.

[0039] In addition, the above-mentioned buoy 101 and truss structure 102 can be made of steel or reinforced concrete. Specifically, when the buoy 101 is a steel buoy and the truss structure 102 is a steel truss, the buoy 101 and the truss structure 102 are welded together so that the buoy 101 and the truss structure 102 have a better connection strength; or, when the buoy 101 is made of reinforced concrete material and the truss structure 102 is made of reinforced concrete material, the buoy 101 and the truss structure 102 are cast and formed as a whole to form a floating body 100 with better integrity, thereby improving the connection strength between the buoy 101 and the truss structure 102.

[0040] The optical fiber installation housing 400 provided by the present invention is installed on the top of the floating body 100 through a fixed connector 700, and the projection of the optical fiber installation housing 400 on the horizontal plane can cover the buoy 101 and the truss structure 102, so as to make full use of the installation space on the floating body 100 and improve the installation space utilization rate of the floating body 100.

[0041] Furthermore, the optical fiber installation housing 400 can be arranged parallel to the horizontal plane, inclined to the horizontal plane, or perpendicular to the horizontal plane. Any arrangement that can meet the use requirements falls within the protection scope of the present invention.

[0042] Furthermore, an inspection channel is provided between adjacent optical fiber arrays, so that workers can inspect the floating photovoltaic power generation device in the inspection channel.

[0043] In addition, the floating photovoltaic power generation device provided by the present invention also includes an inverter connected to the photovoltaic panel 200, a collector line 800 and an embedded step-up transformer 900 connected to the inverter, and a sending submarine cable for transmitting electric energy. The buoy is provided with a through hole for the sending submarine cable to pass through, so that the current output by the photovoltaic panel 200 passes through the inverter and the collector line 800 and then enters the embedded step-up transformer 900. The current is boosted by the embedded step-up transformer 900, and the boosted high-voltage current is sent out through the sending submarine cable.

[0044] It should be understood that the above-mentioned inverter, collector line 800 and embedded step-up transformer 900 are all arranged in the installation cavity to reduce the impact of harsh environments such as splashing seawater, marine salt spray and marine humidity on the inverter, collector line 800 and embedded step-up transformer 900, thereby extending the service life of the floating photovoltaic power generation device and, at the same time, further lowering the center of gravity of the floating body 100 and improving the stability of the floating photovoltaic power generation device.

[0045] Furthermore, the through hole for passing the optical fiber bundle 301 and the through hole for passing the outgoing submarine cable are both provided with a watertight structure to improve the sealing performance of the installation cavity.

[0046] In addition, an embedded step-up transformer 900 may be respectively arranged in each pontoon 101, or multiple pontoons 101 may share one embedded step-up transformer 900. As long as the arrangement can meet the use requirements, it belongs to the protection scope of the present invention; optionally, there is only one embedded step-up transformer 900 provided in the embodiment of the present invention, that is, multiple pontoons 101 share one embedded step-up transformer 900, and the truss structure 102 adopts a hollow structure with a line channel inside. The collector line 800 in the pontoon 101 where the embedded step-up transformer 900 is not arranged enters the pontoon 101 where the embedded step-up transformer 900 is arranged through the line channel inside the truss structure 102, and is connected to the embedded step-up transformer 900 together, so as to reduce the number of components used and reduce costs.

[0047] In addition, the present invention also provides a photovoltaic power generation system, including any of the floating photovoltaic power generation devices described above, and thus has all the technical effects of the above-mentioned floating photovoltaic power generation devices, which will not be described in detail herein.

[0048] The terms "first" and "second" and the like in the specification and claims of the present invention and the above drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but may include steps or units that are not listed.

[0049] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A floating photovoltaic power generation device, characterized in that: include: A floating body, the floating body comprising a plurality of buoys and a truss structure connecting the plurality of buoys, wherein a mounting cavity is provided inside the buoy; A photovoltaic panel is disposed in the installation cavity and is used to convert light energy into electrical energy; an optical fiber array, the optical fiber array comprising a plurality of optical fibers, the optical fibers being used to receive light and transmit the light to the photovoltaic panel; A splitter is arranged in the buoy, a plurality of optical fibers are gradually gathered at one end close to the buoy to form an optical fiber bundle, the buoy is provided with a through hole through which the optical fiber bundle can pass, the splitter is used to support the optical fiber bundle and divide the optical fiber bundle into optical fiber sub-bundles, so that the optical fiber sub-bundles are distributed above each of the photovoltaic panels, so that the photovoltaic panels receive the light energy transmitted by the optical fiber sub-bundles to realize photovoltaic power generation; and The optical fiber installation housing is arranged on the floating body, and the optical fiber installation housing is provided with an array cavity for installing the optical fiber array.

2. The floating photovoltaic power generation device according to claim 1, characterized in that: The top cover of the optical fiber installation housing is made of transparent material, and the end axis of the optical fiber is perpendicular to the plane where the inner wall of the top cover is located.

3. The floating photovoltaic power generation device according to claim 1, characterized in that: It also includes a mounting bracket for mounting the photovoltaic panel, and the arrangement shape of the photovoltaic panel in the mounting cavity matches the shape of the mounting cavity.

4. The floating photovoltaic power generation device according to claim 1, characterized in that: There are three pontoons, namely a first pontoon, a second pontoon and a third pontoon. The centers of the first pontoon, the second pontoon and the third pontoon are distributed in a triangle, and the truss structure is a double-layer triangular structure.

5. The floating photovoltaic power generation device according to claim 4, characterized in that: When the buoy is a steel buoy and the truss structure is a steel truss, the buoy and the truss structure are welded together; Alternatively, when the buoy is made of reinforced concrete and the truss structure is made of reinforced concrete, the buoy and the truss structure are cast in one piece.

6. The floating photovoltaic power generation device according to claim 1, characterized in that: The optical fiber installation housing is installed on the top of the floating body through a fixed connection piece, and the projection of the optical fiber installation housing on the horizontal plane can cover the buoy and the truss structure.

7. The floating photovoltaic power generation device according to claim 1, characterized in that: An inspection channel is arranged between adjacent optical fiber arrays.

8. The floating photovoltaic power generation device according to claim 1, characterized in that: It also includes an inverter connected to the photovoltaic panel, a collector line and an embedded step-up transformer connected to the inverter, and a sending submarine cable for transmitting electric energy.

9. A photovoltaic power generation system, characterized in that: It comprises the floating photovoltaic power generation device as claimed in any one of claims 1 to 8.

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