Photovoltaic power generation unit group and offshore photovoltaic power generation system
By designing a photovoltaic power generation unit group, the box transformer is set close to the boundary of the photovoltaic array and ordinary cables are used to connect the box transformer, which solves the problem of high construction costs of offshore photovoltaic power stations and achieves the effect of reducing construction costs.
Patent Information
- Application Number
- CN202323387775.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-12
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2033-12-12
AI Technical Summary
The construction cost of existing offshore photovoltaic power stations is relatively high, mainly because the dispersed box variables need to be electrically connected through submarine cables.
A photovoltaic power generation unit group is designed, in which N photovoltaic arrays correspond one by one to N box transformers, the box transformers are electrically connected in sequence through ordinary cables, and the photovoltaic power generation unit group is electrically connected to other units or boost stations through submarine cables. The box transformers are set close to the boundary of the photovoltaic array to shorten the interval distance between the box transformers.
By shortening the box variable spacing distance and using ordinary electrical connection lines instead of submarine cables, the construction cost of offshore photovoltaic power generation system is significantly reduced.
Smart Images
Figure CN222827162U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of solar photovoltaic, in particular to a photovoltaic power generation unit group and an offshore photovoltaic power generation system. Background Art
[0002] In the related art, a large-scale centralized offshore photovoltaic power station is generally composed of multiple photovoltaic power generation units. One step-up box transformer is arranged for each power generation unit. Multiple box transformers are connected in series in turn through submarine cables and finally aggregated to a step-up substation. After being stepped up by the main transformer of the step-up substation, the power is connected to the power grid through a transmission line.
[0003] However, one box transformer is used as one foundation and the box transformers are arranged dispersedly, resulting in a high construction cost of the offshore photovoltaic power station. Summary of the Utility Model
[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a photovoltaic power generation unit group and an offshore photovoltaic power generation system, which can reduce the construction cost of the offshore photovoltaic power station.
[0005] The photovoltaic power generation unit group according to the embodiment of the first aspect of the utility model includes N photovoltaic arrays and N box transformers, 2≤N, and N is an integer.
[0006] The photovoltaic array is formed by arranging multiple photovoltaic modules in an array. The photovoltaic arrays and the box transformers are in one-to-one correspondence. Each box transformer in the photovoltaic power generation unit group is electrically connected in turn through ordinary cables. The photovoltaic power generation unit group is electrically connected to other photovoltaic power generation unit groups or a step-up substation through submarine cables.
[0007] In this embodiment, the box transformers in the photovoltaic power generation unit group are arranged close to each other, which helps to shorten the distance between the box transformers, facilitates connecting the box transformers with ordinary electrical connection lines, avoids using submarine cables, and thus reduces the construction cost of the offshore photovoltaic power generation system.
[0008] According to some embodiments of the utility model, the box transformer is arranged close to the boundary of the photovoltaic array. According to some embodiments of the utility model, the photovoltaic array is rectangular, and 4 photovoltaic arrays are arranged in a "field" - shaped array. The "field" - shaped array has a central position.
[0009] The photovoltaic power generation unit group is provided with 4 box transformers, and each box transformer is respectively arranged corresponding to one photovoltaic array and close to its central position.
[0010] According to some embodiments of the utility model, a first photovoltaic array, a second photovoltaic array and a third photovoltaic array are provided, the first, second and third photovoltaic arrays are arranged in two rows or two columns, and the boundaries of the first, second and third photovoltaic arrays provided with the box transformers are arranged close to each other.
[0011] According to some embodiments of the present invention, the distance from one of the three box-type transformers to the other two is equal, or the distance from any one of the three box-type transformers to the other two is equal.
[0012] According to some embodiments of the utility model, a first photovoltaic array and a second photovoltaic array are provided, one of the box-type transformers is arranged close to a side of the first photovoltaic array, and the other box-type transformer is arranged close to a side of the second photovoltaic array.
[0013] The first and second photovoltaic arrays are arranged in parallel, and the sides of the first and second photovoltaic arrays arranged with the box-type transformer are close to each other.
[0014] According to some embodiments of the utility model, a bridge frame for the common cable is further provided, and two ends of the bridge frame are respectively connected to the two box-type transformers.
[0015] According to some embodiments of the present invention, a carrying platform is further included, and each of the box-type transformers is arranged on the carrying platform.
[0016] According to some embodiments of the present utility model, a maintenance cruise channel is provided between two adjacent photovoltaic arrays.
[0017] An offshore photovoltaic power generation system according to an embodiment of the second aspect of the utility model comprises the photovoltaic power generation unit group in the first aspect.
[0018] Additional aspects and advantages of the present invention will be given in the following description, will become apparent from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0020] Figure 1 is a schematic diagram of a photovoltaic power generation unit group according to an embodiment of the utility model;
[0021] Figure 2 is a schematic diagram of another photovoltaic power generation unit group according to an embodiment of the utility model;
[0022] Figure 3 It is a schematic diagram of the arrangement of four photovoltaic arrays according to an embodiment of the utility model;
[0023] Figure 4 Schematic diagram of the arrangement of three photovoltaic arrays according to the embodiment of the utility model Figure 1 ;
[0024] Figure 5 Schematic diagram of the arrangement of three photovoltaic arrays according to the embodiment of the utility model Figure 2 ;
[0025] Figure 6 Schematic diagram of two photovoltaic array arrangements according to an embodiment of the present utility model Figure 2 ;
[0026] Figure 7 Schematic diagram of two photovoltaic array arrangements according to an embodiment of the present utility model Figure 2 ;
[0027] Figure 8 It is a schematic diagram of a structure in which two photovoltaic power generation unit groups are connected according to an embodiment of the utility model;
[0028] Reference numerals:
[0029] Photovoltaic power generation unit group 100, photovoltaic array 10, first photovoltaic array 10a, second photovoltaic array 10b, third photovoltaic array 10c, fourth photovoltaic array 10d;
[0030] Box transformer 20, first box transformer 20a, second box transformer 20b, third box transformer 20c, fourth box transformer 20d;
[0031] Bridge 30, common cables 40, maintenance cruise channel 50, submarine cable 60, booster station 200. DETAILED DESCRIPTION
[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0033] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.
[0034] The following is combined with Figure 1-8 , describing a photovoltaic power generation unit group 100 according to a first aspect of an embodiment of the present utility model.
[0035] like Figure 1 and Figure 2 As shown, a photovoltaic power generation unit group 100 includes N photovoltaic arrays 10 and N box transformers 20, 2≤N, N is an integer,
[0036] The photovoltaic array 10 is composed of a plurality of photovoltaic modules arranged in an array, and the photovoltaic array 10 corresponds to the box transformer 20 one by one.
[0037] The box transformers 20 in the photovoltaic power generation unit group 100 are electrically connected in sequence through common cables 40 , and the photovoltaic power generation unit group 100 is electrically connected to other photovoltaic power generation unit groups 100 or booster stations 200 through submarine cables 60 .
[0038] It should be noted that the photovoltaic array 10 is composed of multiple photovoltaic components arranged in an array. The photovoltaic array 10 can be rectangular, square, or rhombus-shaped. The photovoltaic array 10 can be any other suitable parallelogram shape besides rhombus, square, or rectangle.
[0039] The photovoltaic array 10 corresponds to the box transformer 20 one by one, that is, one photovoltaic array 10 matches one box transformer 20 (also known as a box transformer), which is equivalent to one photovoltaic power generation unit.
[0040] In practical applications, there may be 2 photovoltaic arrays, 3 photovoltaic arrays, 4 photovoltaic arrays, 5 photovoltaic arrays, 6 photovoltaic arrays, ... For example, 5 photovoltaic arrays are arranged in a regular pentagon, or 6 photovoltaic arrays are arranged in a regular hexagon.
[0041] The box transformer 20 is arranged near the boundary of the photovoltaic array 10. In other words, the box transformer 20 is arranged in an area far away from the center of the photovoltaic array. In some embodiments, the box transformer 20 can be arranged at an inner corner of the photovoltaic array 10. In some embodiments, the box transformer 20 can be arranged near the side of the photovoltaic array 10.
[0042] Preferably, in the first embodiment, as Figure 3 As shown, the photovoltaic power generation unit group 100 is provided with four photovoltaic arrays 10 arranged in a rectangular array, and the four box transformers 20 are all arranged at the inner corners of the corresponding photovoltaic arrays 10 close to the center of the above rectangular array.
[0043] In a specific embodiment, 4 photovoltaic arrays 10 can be arranged in two rows and two columns, in a "field" - shaped array layout. The box - type transformer 20 is arranged at the inner corner of the photovoltaic array 10, that is, the box - type transformer configured on the photovoltaic power generation unit is arranged at the inner corner near the center position of the "field" - shaped array, so that the 4 box - type transformers configured for the 4 photovoltaic power generation units are centrally arranged at the center position of the "field" - shaped array. That is to say, each box - type transformer 20 is respectively arranged corresponding to a photovoltaic array 10 and near its center position.
[0044] The 4 photovoltaic arrays 10: the first photovoltaic array 10a, the second photovoltaic array 10b, the third photovoltaic array 10c, and the fourth photovoltaic array 10d. The first box - type transformer 20a is arranged at an inner corner of the first photovoltaic array 10a, and this inner corner is the inner corner near the center position of the "field" - shaped array. The second box - type transformer 20b is arranged at an inner corner of the second photovoltaic array 10b, and this inner corner is the inner corner near the center position of the "field" - shaped array. The third box - type transformer 20c is arranged at an inner corner of the third photovoltaic array 10c, and this inner corner is the inner corner near the center position of the "field" - shaped array. The fourth box - type transformer 20d is arranged at an inner corner of the fourth photovoltaic array 10d, and this inner corner is the inner corner near the center position of the "field" - shaped array.
[0045] As Figure 3 shown, the first box - type transformer 20a and the second box - type transformer 20b are arranged close to each other, the first box - type transformer 20a and the fourth box - type transformer 20d are arranged close to each other, and the distance d1 between the first box - type transformer 20a and the second box - type transformer 20b is equal to the distance d1 between the first box - type transformer 20a and the fourth box - type transformer 20d; the second box - type transformer 20b and the first box - type transformer 20a are arranged close to each other, the second box - type transformer 20b and the third box - type transformer 20c are arranged close to each other, and the distance d1 between the second box - type transformer 20b and the first box - type transformer 20a is equal to the distance d1 between the second box - type transformer 20b and the third box - type transformer 20c; the third box - type transformer 20c and the second box - type transformer 20b are arranged close to each other, the third box - type transformer 20c and the fourth box - type transformer 20d are arranged close to each other, and the distance d1 between the third box - type transformer 20c and the second box - type transformer 20b is equal to the distance d1 between the third box - type transformer 20c and the fourth box - type transformer 20d.
[0046] With such a setting, the box - type transformers 20 are arranged close to each other, which helps to shorten the distance between the box - type transformers 20, facilitates connecting the box - type transformers 20 with ordinary electrical connection lines, avoids using submarine cables, and thus reduces the construction cost of the offshore photovoltaic power generation system.
[0047] Preferably, in the second embodiment, as Figure 4 、 Figure 5As shown, the photovoltaic power generation unit group 100 is provided with three photovoltaic arrays 10, including a first photovoltaic array 10a, a second photovoltaic array 10b and a third photovoltaic array 10c. The first, second and third photovoltaic arrays are arranged in two rows or two columns, and the boundaries of the first, second and third photovoltaic arrays provided with the box transformer 20 are arranged close to each other.
[0048] Three photovoltaic arrays 10: a first photovoltaic array 10a, a second photovoltaic array 10b, and a third photovoltaic array 10c. The first box transformer 20a is arranged at an inner corner of the first photovoltaic array 10a, and the second box transformer 20b is arranged at an inner corner of the second photovoltaic array 10b. The third box transformer 20c is arranged at an inner corner of the third photovoltaic array 10c, or the third box transformer 20c is arranged at a middle position of the third photovoltaic array 10c near its side.
[0049] The three photovoltaic arrays 10 are arranged in a preset manner, such as Figure 4 As shown, the third box transformer 20c is currently located at an inner corner of the third photovoltaic array 10c. Any two adjacent ones of the first box transformer 20a, the second box transformer 20b and the third box transformer 20c are arranged close to each other, and the distance d2 between the first box transformer 20a and the second box transformer 20b is equal to the distance d2 between the second box transformer 20b and the third box transformer 20c. In other words, the first box transformer 20a, the second box transformer 20b and the third box transformer 20c are arranged in an isosceles right triangle, and the distance from one of the three box transformers 20 to the other two is equal.
[0050] The three photovoltaic arrays 10 are arranged in a preset manner, such as Figure 5 As shown, the third transformer 20c is currently in the middle of the third photovoltaic array 10c near its side. Any two adjacent transformers of the first transformer 20a, the second transformer 20b and the third transformer 20c are arranged close to each other, and the distance d3 between the first transformer 20a and the second transformer 20b is equal to the distance d3 between the first transformer 20a and the third transformer 20c; the distance d3 between the second transformer 20b and the first transformer 20a is equal to the distance d3 between the second transformer 20b and the third transformer 20c. In other words, the first transformer 20a, the second transformer 20b and the third transformer 20c are arranged in an equilateral triangle, and the distance from any of the three transformers 20 to the other two is equal.
[0051] Such an arrangement enables each box-type transformer 20 to be arranged close to each other, helps to shorten the spacing between the box-type transformers 20, facilitates the use of common electrical connecting lines to connect the box-type transformers 20, avoids the use of submarine cables, and thus reduces the construction cost of the offshore photovoltaic power generation system.
[0052] Preferably, in the third embodiment, as Figure 6 , Figure 7 As shown, the photovoltaic power generation unit group 100 is provided with two photovoltaic arrays 10 .
[0053] The photovoltaic array 10 unit is provided with a first photovoltaic array 10a and a second photovoltaic array 10b. The first box transformer 20a is arranged close to the side of the first photovoltaic array 10a, and the second box transformer 20b is arranged close to the side of the first photovoltaic array 10a. The first and second photovoltaic arrays are arranged in parallel, and the side of the first photovoltaic array 10a where the first box transformer 20a is arranged and the side wall of the second photovoltaic array 10b where the second box transformer 20b is arranged are close to each other.
[0054] The two photovoltaic arrays 10 are arranged in a preset manner, such as Figure 6 or Figure 7 As shown, the first box transformer 20a and the second box transformer 20b are arranged close to each other, and the first box transformer 20a and the second box transformer 20b are arranged in parallel, and the distance between the first box transformer 20a and the second box transformer 20b is always d4.
[0055] Such an arrangement enables the two box transformers 20 to be arranged close to each other, which helps to shorten the interval between the box transformers 20, facilitates the use of ordinary electrical connecting lines to connect the box transformers 20, avoids the use of submarine cables, and thus reduces the construction cost of the offshore photovoltaic power generation system.
[0056] It should be noted that the number of photovoltaic power generation unit groups 100 can be 2, 3, 4, 5, ..., and those skilled in the art can select a suitable number of photovoltaic power generation unit groups 100 according to the power generation capacity.
[0057] The photovoltaic power generation unit group 100 is electrically connected to other photovoltaic power generation unit groups 100 or the booster station 200 via a submarine cable 60 .
[0058] In a specific embodiment, if Figure 8 As shown, there are two photovoltaic power generation unit groups 100: a first photovoltaic power generation unit group 100a and a second photovoltaic power generation unit group 100b. The first photovoltaic power generation unit group 100a and the second photovoltaic power generation unit group 100b are connected by a submarine cable 60, and the second photovoltaic power generation unit group 100b and the booster station 200 are connected by a submarine cable 60. In this way, photovoltaic power generation unit groups arranged at a long distance are electrically connected by submarine cables 60, and the box transformers of each photovoltaic array in the photovoltaic power generation unit group are electrically connected by ordinary cables, avoiding the use of submarine cables, thereby reducing the construction cost of the offshore photovoltaic power generation system.
[0059] The number of photovoltaic arrays in the first photovoltaic power generation unit group 100a may be one of 4, 3, and 2, and the number of photovoltaic arrays in the second photovoltaic power generation unit group 100b may be one of 4, 3, and 2.
[0060] It should be noted that the following embodiments are described by taking the photovoltaic power generation unit group 100 as having four photovoltaic arrays as an example:
[0061] In some embodiments of the present invention, each box-type transformer 20 is electrically connected in sequence via a common cable 40 .
[0062] It should be noted that if Figure 3 As shown, the first box transformer 20a and the second box transformer 20b are electrically connected by a common cable 40, the second box transformer 20b and the third box transformer 20c are electrically connected by a common cable 40, and the third box transformer 20c and the fourth box transformer 20d are electrically connected by a common cable 40. Compared with submarine cables, common cables 40 are inexpensive and help reduce the construction cost of offshore photovoltaic power generation systems.
[0063] Furthermore, if Figure 4 As shown, a bridge 30 for setting common cables 40 is also included. The cables 40 can be installed on the bridge 30, and the bridge 30 is used to protect the cables 40. One bridge 30 is set between the first box transformer 20a and the second box transformer 20b, another bridge 30 is set between the second box transformer 20b and the third box transformer 20c, and another bridge 30 is set between the third box transformer 20c and the fourth box transformer 20d.
[0064] The bridge frame 30 and the box-type transformer 20 may be welded, or the bridge frame 30 and the box-type transformer 20 may be connected by fastener threads, etc., which is not limited in this embodiment.
[0065] Such an arrangement enables the common cable 40 to be stably electrically connected to the box-type transformer 20 , thereby preventing the connection performance of the common cable 40 from being affected by severe seawater weather.
[0066] Furthermore, it also includes a bearing platform, and each box transformer 20 is arranged on the bearing platform.
[0067] In a specific embodiment, the supporting platform may be a floating supporting platform, and the first box transformer 20a, the second box transformer 20b, the third box transformer 20c, and the fourth box transformer 20d may be connected to the floating supporting platform.
[0068] Of course, it is understandable that the supporting platform can also be connected to the seabed through steel columns, and the first box transformer 20a, the second box transformer 20b, the third box transformer 20c, and the fourth box transformer 20d are connected to the supporting platform.
[0069] Furthermore, a maintenance cruise channel 50 is provided between two adjacent photovoltaic arrays.
[0070] like Figure 3 As shown, a cross-shaped inspection and cruise channel 50 is provided between the first, second, third and fourth photovoltaic arrays, so as to facilitate the repair and daily maintenance of each photovoltaic array 10 in the later stage.
[0071] The offshore photovoltaic power generation system of the second aspect provided by the embodiment of the utility model comprises a photovoltaic power generation unit group 100 in the first direction. The offshore photovoltaic power generation system has the advantages of the above-mentioned photovoltaic power generation unit group.
[0072] In this embodiment, the transformer boxes 20 in the photovoltaic power generation unit group 100 are arranged close to each other, which helps to shorten the spacing between the transformer boxes 20, facilitates the use of common electrical connecting lines to connect the transformer boxes 20, avoids the use of submarine cables, and thus reduces the construction cost of the offshore photovoltaic power generation system.
[0073] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0074] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.
[0075] In the description of the present invention, "plurality" means two or more.
[0076] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.
[0077] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.
[0078] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", "some examples", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0079] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A photovoltaic power generation unit group (100), characterized in that: It includes N photovoltaic arrays (10) and N box-type transformers (20), where 2 ≤ N and N is an integer. The photovoltaic array (10) is formed by arranging multiple photovoltaic modules in an array. The photovoltaic arrays (10) correspond to the box-type transformers (20) one by one. Each box-type transformer (20) in the photovoltaic power generation unit group is electrically connected in sequence through ordinary cables (40). The photovoltaic power generation unit group (100) is electrically connected to other photovoltaic power generation unit groups (100) or a booster station (200) through submarine cables (60).
2. The photovoltaic power generation unit group (100) according to claim 1, characterized in that: The box-type transformer (20) is arranged near the boundary of the photovoltaic array (10).
3. The photovoltaic power generation unit group (100) according to claim 2, characterized in that: The photovoltaic array (10) is rectangular. Four of the photovoltaic arrays (10) are arranged in a "field" - shaped array, and the shape corresponding to the "field" - shaped array has a central position. The photovoltaic power generation unit group (100) is provided with four box-type transformers (20). Each box-type transformer (20) is respectively arranged corresponding to one of the photovoltaic arrays (10) and near its central position.
4. The photovoltaic power generation unit group (100) according to claim 2, characterized in that: There are a first photovoltaic array (10a), a second photovoltaic array (10b), and a third photovoltaic array (10c). The first, second, and third photovoltaic arrays are arranged in two rows or two columns, and the boundaries where the box-type transformers (20) are arranged of the first, second, and third photovoltaic arrays are arranged close to each other.
5. The photovoltaic power generation unit group (100) according to claim 4, characterized in that: Among the three box-type transformers (20), the distance from one to the other two is equal, or the distance from any one of the three box-type transformers (20) to the other two is equal.
6. The photovoltaic power generation unit group (100) according to claim 2, characterized in that: There are a first photovoltaic array (10a) and a second photovoltaic array (10b). One box-type transformer (20) is arranged near the side of the first photovoltaic array (10a), and the other box-type transformer (20) is arranged near the side of the second photovoltaic array (10b). The first and second photovoltaic arrays are arranged side by side, and the sides where the box-type transformers (20) are arranged of the first and second photovoltaic arrays are close to each other.
7. The photovoltaic power generation unit group (100) according to claim 1, characterized in that: It further includes a cable bridge (30) for arranging the ordinary cables (40). Both ends of the cable bridge (30) are respectively connected to two box-type transformers (20).
8. The photovoltaic power generation unit group (100) according to claim 1, characterized in that: It further includes a bearing platform, and each box-type transformer (20) is arranged on the bearing platform.
9. The photovoltaic power generation unit group (100) according to claim 1, characterized in that: An inspection and cruise passage (50) is provided between two adjacent photovoltaic arrays (10).
10. An offshore photovoltaic power generation system, characterized in that: It includes the photovoltaic power generation unit group (100) according to any one of claims 1 - 9.