Fishing-light complementary photovoltaic field grounding system and fishing-light complementary photovoltaic system

Abstract

The utility model provides a fishing light complementation photovoltaic field grounding system and a fishing light complementation photovoltaic system, comprising a plurality of rows of photovoltaic assemblies arranged in parallel on the water surface, adjacent assemblies of each row of photovoltaic assemblies are connected through a grounding wire, and each assembly is connected with a corresponding assembly support through a grounding wire; in each row of photovoltaic modules, the grounding wire of the photovoltaic module at the first end is connected with the first vertical grounding electrode, and the grounding wire of the photovoltaic module at the second end is connected with the second vertical grounding electrode; in each row of photovoltaic modules, grounding wires of two adjacent photovoltaic modules in the middle are respectively connected with a third vertical grounding electrode; according to the utility model, the connection between rows is cancelled, each row is used as a unit, the vertical grounding electrodes are arranged at the two ends and the middle position of each row, the vertical grounding electrodes are reliably connected with the support at the pile heads of the photovoltaic support, a horizontal grounding grid is cancelled, and the cost is reduced on the premise of ensuring the grounding effect.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic power generation, in particular to a fishery-photovoltaic complementary photovoltaic field grounding system and a fishery-photovoltaic complementary photovoltaic system. Background Art

[0002] The statements in this section merely provide background technology related to the present invention and do not necessarily constitute prior art.

[0003] In previous photovoltaic power generation projects, the traditional grounding scheme for ground photovoltaics has been relatively mature. However, in some fish-photovoltaic complementary photovoltaic power generation projects, the photovoltaic area is restricted by water surface construction conditions, and the construction of traditional photovoltaic grounding schemes is more difficult, and a large amount of grounding materials need to be laid.

[0004] Taking a photovoltaic array as an example, the traditional grounding scheme of the fish-photovoltaic complementary photovoltaic area is as follows: Figure 1 and Figure 2 As shown in the figure, the photovoltaic modules and brackets are both metal bodies. Although there is direct contact between the two, in fact, the aluminum frame of the module and the galvanized bracket or aluminum alloy bracket are all plated, which cannot meet the requirements of reliable grounding. Therefore, in actual applications, the module grounding uses yellow-green grounding wires to connect between modules and modules, and modules and brackets, and connect the modules on each row of brackets to make the grounding stable and reliable.

[0005] Since the water surface is relatively humid, copper-plated steel is generally selected as the bracket grounding material. It is reliably welded to the photovoltaic bracket above the water surface to connect the brackets between different rows. In order to ensure reliability, both ends of each row of brackets need to be connected in the same way. The grounding conductor is laid with the cable bridge until it reaches the shore and is connected to the horizontal grounding grid. The horizontal grounding grid is arranged along the shore of the photovoltaic sub-array so that both ends of each row of components can be connected to the main grid. The grounding material can be selected according to the corrosiveness of the soil. It can be galvanized steel or copper-plated steel. A vertical grounding electrode is set, which forms the main grounding grid with the horizontal grounding grid. The setting of the horizontal grounding grid and the grounding conductor in the existing solution greatly increases the cost. Utility Model Content

[0006] In order to address the deficiencies of the prior art, the utility model provides a fish-photovoltaic complementary photovoltaic field grounding system and a fish-photovoltaic complementary photovoltaic system, which eliminates the connection between rows and uses each row as a unit. Vertical grounding electrodes are installed at both ends and in the middle of each row. The vertical grounding electrodes are reliably connected to the photovoltaic bracket at the pile head, eliminating the horizontal grounding grid, and reducing costs while ensuring the grounding effect.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] In a first aspect, the utility model provides a grounding system for a fish-photovoltaic complementary photovoltaic field.

[0009] A grounding system for a fishery-solar complementary photovoltaic field, comprising: a plurality of parallel rows of photovoltaic modules arranged on a water surface, wherein adjacent modules in each row are connected via grounding wires, and each module is connected to a corresponding module bracket via a grounding wire;

[0010] In each row of photovoltaic modules, the grounding wires of the photovoltaic modules at the first end are connected to the first vertical grounding electrode, and the grounding wires of the photovoltaic modules at the second end are connected to the second vertical grounding electrode.

[0011] As a further limitation of the first aspect of the present invention, the first vertical grounding electrode and the second vertical grounding electrode are both fixedly connected to the most adjacent component bracket.

[0012] As a further limitation of the first aspect of the present invention, the first vertical grounding electrode and the second vertical grounding electrode are both copper-plated round steel.

[0013] As a further limitation of the first aspect of the present invention, in each row of photovoltaic modules, the grounding wires of two adjacent photovoltaic modules in the middle are respectively connected to the third vertical grounding electrode.

[0014] As a further limitation of the first aspect of the present invention, the grounding wires between the components and the grounding wires between the components and the photovoltaic support are both yellow-green grounding wires.

[0015] As a further limitation of the first aspect of the present invention, the third vertical grounding electrode is fixedly connected to the nearest component bracket.

[0016] As a further limitation of the first aspect of the present invention, the third vertical grounding electrode is copper-plated round steel.

[0017] As a further limitation of the first aspect of the present invention, each row of photovoltaic modules includes multiple module strings, each module string includes multiple photovoltaic modules connected in series, and adjacent photovoltaic module strings are connected by grounding wires.

[0018] As a further limitation of the first aspect of the present invention, the grounding wires between component strings are yellow-green grounding wires.

[0019] In a second aspect, the present invention provides a fishery-photovoltaic complementary system, comprising the fishery-photovoltaic complementary photovoltaic field grounding system described in the first aspect.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This utility model innovatively proposes a grounding system for a fish-photovoltaic complementary photovoltaic field and a fish-photovoltaic complementary photovoltaic system, which eliminates the connection between rows and uses each row as a unit to install vertical grounding electrodes at both ends and the middle of each row. The vertical grounding electrodes are reliably connected to the photovoltaic bracket at the pile head, eliminating the horizontal grounding grid, and reducing costs while ensuring the grounding effect.

[0022] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0024] Figure 1 A schematic plan view of a conventional grounding scheme for a photovoltaic area provided in the background art;

[0025] Figure 2 A schematic cross-sectional view of a conventional grounding scheme for a photovoltaic area provided in the background art;

[0026] Figure 3 Schematic diagram of the grounding system for the fishery-photovoltaic hybrid photovoltaic field provided in Example 1 of the present utility model;

[0027] Figure 3 Among them, 1. First vertical grounding electrode; 2. Second vertical grounding electrode; 3. Third vertical grounding electrode; 4. Component string; 5. Fish pond; 6. Land; 7. Brass grounding wire. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0030] In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0031] Example 1:

[0032] In this implementation, a grounding system for a fishery-solar hybrid photovoltaic field is proposed, such as Figure 3As shown, it includes: multiple rows of parallel photovoltaic modules for arrangement on the water surface of a fish pond 5 (surrounded by land 6), adjacent modules in each row of photovoltaic modules are connected by grounding wires, and each module is connected to the corresponding module bracket through a grounding wire;

[0033] In each row of photovoltaic modules, the grounding wires of the photovoltaic modules at the first end are connected to the first vertical grounding electrode 1 , and the grounding wires of the photovoltaic modules at the second end are connected to the second vertical grounding electrode 2 .

[0034] In this implementation, preferably, the first vertical grounding electrode 1 and the second vertical grounding electrode 2 are both fixedly connected to the most adjacent component bracket.

[0035] In this implementation, preferably, the first vertical grounding electrode and the second vertical grounding electrode are both copper-plated round steel.

[0036] In this implementation, preferably, in each row of photovoltaic modules, the grounding wires of two adjacent photovoltaic modules in the middle are respectively connected to the third vertical grounding electrode 3 .

[0037] In this implementation, preferably, the grounding wires between the components and the grounding wires between the components and the photovoltaic support are both yellow-green grounding wires 7.

[0038] In this implementation, preferably, the third vertical grounding electrode 3 is fixedly connected to the nearest component bracket.

[0039] In this implementation, preferably, the third vertical grounding electrode 3 is copper-plated round steel.

[0040] In this implementation, preferably, each row of photovoltaic modules includes a plurality of module strings 4 , each module string 4 includes a plurality of photovoltaic modules connected in series, and adjacent photovoltaic module strings 4 are connected via a grounding wire.

[0041] In this implementation, preferably, the grounding wire between the component strings 4 is a yellow-green grounding wire 7 .

[0042] In the specific process of technological evolution, the following comparison operations were performed:

[0043] According to the main components of grounding in the fish-photovoltaic complementary photovoltaic area, the module grounding, module bracket grounding and grounding main grid are analyzed, as shown in Table 1.

[0044] Table 1: Analysis table of each grounding part.

[0045]

[0046] Based on the analysis in Table 1, it is suggested that the component bracket grounding and horizontal grounding grid can be reduced, and an optimization scheme is proposed, as shown in Table 2.

[0047] Table 2: Comparison between the optimized solution and the traditional solution.

[0048] Main components Traditional solution Optimization plan Component grounding have Same as traditional solution Component bracket grounding have Cancel the landing part of the support Grounding main grid have Only the vertical grounding electrode is retained

[0049] Taking one sub-array as a unit, the engineering quantities of the traditional scheme and the optimized scheme are listed, and the material and construction prices are estimated, as shown in Tables 3, 4 and 5.

[0050]

[0051] Table 4: Project cost table of single sub-array optimization solution.

[0052]

[0053]

[0054] Table 5: Comparison of engineering costs between the single sub-array optimization solution and the traditional solution.

[0055]

[0056] According to the comparison of the construction cost of the single sub-array optimization scheme and the traditional scheme, it can be seen that the optimized scheme of this application is significantly better than the traditional scheme in terms of construction cost.

[0057] Example 2:

[0058] This implementation provides a fishery-photovoltaic complementary photovoltaic system, including the fishery-photovoltaic complementary photovoltaic field grounding system described in Example 1 of the present utility model.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A grounding system for a fishery-photovoltaic hybrid photovoltaic field, characterized in that: The method comprises: arranging multiple rows of parallel photovoltaic modules on the water surface, wherein adjacent modules in each row are connected via a grounding wire, and each module is connected to a corresponding module bracket via a grounding wire; In each row of photovoltaic modules, the grounding wires of the photovoltaic modules at the first end are connected to the first vertical grounding electrode, and the grounding wires of the photovoltaic modules at the second end are connected to the second vertical grounding electrode.

2. The fish-photovoltaic complementary photovoltaic field grounding system according to claim 1, characterized in that: The first vertical grounding electrode and the second vertical grounding electrode are both fixedly connected to the most adjacent component bracket.

3. The fish-photovoltaic complementary photovoltaic field grounding system according to claim 1 or 2, characterized in that: The first vertical grounding electrode and the second vertical grounding electrode are both copper-plated round steel.

4. The fish-photovoltaic complementary photovoltaic field grounding system according to claim 1 or 2, characterized in that: The grounding wires between the components and the grounding wires between the components and the photovoltaic bracket are all yellow-green grounding wires.

5. The fish-photovoltaic complementary photovoltaic field grounding system according to claim 1 or 2, characterized in that: In each row of photovoltaic modules, the grounding wires of two adjacent photovoltaic modules in the middle are respectively connected to the third vertical grounding electrode.

6. The grounding system for the fishery-photovoltaic complementary photovoltaic field according to claim 5, characterized in that: The third vertical grounding electrode is fixedly connected to the nearest component bracket.

7. The grounding system for the fishery-photovoltaic complementary photovoltaic field according to claim 5, characterized in that: The third vertical grounding pole is copper-plated round steel.

8. The fish-photovoltaic complementary photovoltaic field grounding system according to claim 1, characterized in that: Each row of photovoltaic modules includes multiple module strings, each module string includes multiple photovoltaic modules connected in series, and adjacent photovoltaic module strings are connected by grounding wires.

9. The fish-photovoltaic complementary photovoltaic field grounding system according to claim 8, characterized in that: The grounding wire between component strings uses yellow-green grounding wire.

10. A fish-solar complementary photovoltaic system, characterized in that: The invention comprises the grounding system of the fish-photovoltaic complementary photovoltaic field area as described in any one of claims 1 to 9.

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