CN209993732U - Photovoltaic power plant ground structure - Google Patents
Photovoltaic power plant ground structure Download PDFInfo
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- CN209993732U CN209993732U CN201921160979.3U CN201921160979U CN209993732U CN 209993732 U CN209993732 U CN 209993732U CN 201921160979 U CN201921160979 U CN 201921160979U CN 209993732 U CN209993732 U CN 209993732U
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- grounding
- grounding body
- building foundation
- horizontal annular
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Abstract
A grounding structure of a photovoltaic power station relates to the technical field of photovoltaic power stations; the periphery of the building foundation natural grounding body is provided with a horizontal annular grounding body, and the building foundation natural grounding body is connected with the horizontal annular grounding body through a connecting wire; a plurality of equidistant vertical grounding bodies and a plurality of equidistant vertical grounding modules are uniformly distributed on the horizontal annular grounding body, and the vertical grounding bodies and the vertical grounding modules are arranged in a staggered manner; the building foundation natural grounding body is connected with an outgoing grounding electrode, and the outgoing grounding electrode is connected with a total equipotential grounding terminal board through a total outgoing line; the building foundation natural grounding body is connected with the photovoltaic module through the grounding wire down lead. The utility model discloses both can reduce total ground resistance and can form an equipotential surface through the earthing system of mutual netted interweaving connection, show and reduce the thunder and lightning effect produced overvoltage between each ground wire, can provide high-efficient reliable lightning protection for photovoltaic power plant.
Description
Technical Field
The utility model relates to a photovoltaic power plant technical field, concretely relates to photovoltaic power plant ground structure.
Background
Solar power systems have been increasingly widely used due to their characteristics of stability, reliability, convenience in installation, simplicity in operation and maintenance, and the like. Solar photovoltaic power stations are generally arranged in open places, and when thunder and lightning occur, whether induced thunder or direct lightning strike, huge lightning strike phenomena can occur to isolated power stations. For grid-connected photovoltaic power stations, not only can the solar components and the inverters be damaged, but also the whole system of a power grid can be paralyzed. Solar modules and inverters and other electrical equipment are expensive to manufacture and occupy an absolutely large percentage of the total investment. If the photovoltaic power generation system is struck by lightning, economic loss is brought to the photovoltaic power generation system, and more important relation is to national life and national safety guarantee. If the photovoltaic module is struck by lightning, the power generation power of the module is reduced, the total power generation amount is reduced, and the economic benefit is reduced. If the inverter is struck by lightning, the inverter is also possibly damaged, the total investment can be increased, and meanwhile, the maintenance cost of later equipment can also increase the total investment. Finally, the time delay of the investment of the photovoltaic power station reaching the profit and loss balance point and the extension of the investment recovery period are caused. Therefore, when designing a photovoltaic power station, the rationality of lightning protection grounding must be paid attention to, the maximum loss is reduced, and the prevention is performed in the bud.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple structure, reasonable in design, convenient to use's photovoltaic power plant ground structure to prior art's defect and not enough.
In order to achieve the above object, the utility model adopts the following technical scheme: the grounding device comprises a building foundation natural grounding body, a horizontal annular grounding body, a connecting wire, a vertical grounding body, a vertical grounding module, a main outgoing line, a main equipotential grounding terminal board, a grounding main line, the ground, an outgoing grounding electrode, a grounding wire down lead and a photovoltaic assembly; the periphery of the building foundation natural grounding body is provided with a horizontal annular grounding body, and the building foundation natural grounding body is connected with the horizontal annular grounding body through a connecting wire; a plurality of equidistant vertical grounding bodies and a plurality of equidistant vertical grounding modules are uniformly distributed on the horizontal annular grounding body, and the vertical grounding bodies and the vertical grounding modules are arranged in a staggered manner; the building foundation natural grounding body is connected with an outgoing grounding electrode, the outgoing grounding electrode is connected with a total equipotential grounding terminal board through a total outgoing line, and the total equipotential grounding terminal board is connected with a grounding main line; the building foundation natural grounding body and the horizontal annular grounding body are positioned below the ground; the building foundation natural grounding body is connected with the photovoltaic module through the grounding wire down lead.
Furthermore, an anti-corrosion layer is arranged between the ground and the natural grounding body and the horizontal annular grounding body of the building foundation.
Furthermore, the distance between the ground and the natural grounding body and the horizontal annular grounding body of the building foundation is H, and H is 800-1000 mm.
Furthermore, the distance between the vertical grounding body and the vertical grounding module is D, and D is more than or equal to 5000 mm.
Furthermore, the down lead of the grounding wire is connected with the natural grounding body of the building foundation through a crimping terminal.
The utility model discloses a theory of operation does: horizontal annular grounding body adopts phi 10mm copper-plated round steel, perpendicular grounding body adopts phi 14.2 x 2500mm copper-plated steel bar, perpendicular grounding module adopts cylindrical carbon element grounding module, horizontal annular grounding body and perpendicular grounding module's utmost point core put the hot melt welding back, after buried depth underground is no less than 0.8m, be connected with building foundation natural grounding body, form main grounding net, photovoltaic module links to each other with main grounding net with earth connection downlead, draw forth to the ground main line through total equipotential grounding terminal plate by total lead-out wire, realize the ground connection.
After the structure is adopted, the utility model discloses the beneficial effect who produces does: a photovoltaic power plant ground structure, ground resistance reduces, with the leading-in ground of lightning current, reduces the earth potential, carries out anticorrosive rust-resistant treatment in the welding department, so both can reduce total ground resistance and can form an equipotential surface through the ground system of mutual netted interweaving connection again, is showing and is reducing the produced overvoltage of thunder and lightning effect between each ground wire, can provide high-efficient reliable lightning protection for photovoltaic power plant, the utility model has the advantages of simple structure, set up reasonable, the cost of manufacture low.
Drawings
FIG. 1 is a block diagram of the present invention;
fig. 2 is a cross-sectional view of the ground and horizontal ring-shaped grounding body of the present invention;
fig. 3 is the utility model discloses photovoltaic module and building foundation natural grounding body's connection schematic diagram.
Description of reference numerals:
the natural grounding body 1 of the building foundation, the horizontal annular grounding body 2, the connecting wire 3, the vertical grounding body 4, the vertical grounding module 5, the total outgoing line 6, the total equipotential grounding terminal plate 7, the grounding main line 8, the ground 9, the outgoing grounding electrode 10, the grounding lead-down line 11, the photovoltaic module 12 and the anticorrosive coating 13.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Referring to fig. 1 to fig. 3, the following technical solutions are adopted in the present embodiment: the grounding device comprises a building foundation natural grounding body 1, a horizontal annular grounding body 2, a connecting wire 3, a vertical grounding body 4, a vertical grounding module 5, a total outgoing wire 6, a total equipotential grounding terminal plate 7, a grounding main line 8, a ground 9, an outgoing grounding electrode 10, a grounding wire down lead 11 and a photovoltaic module 12; the periphery of the building foundation natural grounding body 1 is provided with a horizontal annular grounding body 2, the horizontal annular grounding body 2 is made of phi 10mm copper-plated round steel, and the building foundation natural grounding body 1 is connected with the horizontal annular grounding body 2 through a connecting wire 3; horizontal annular grounding body 2 on the equipartition have a plurality of equidistance perpendicular grounding body 4 and a plurality of equidistance perpendicular grounding module 5, and perpendicular grounding body 4 sets up with perpendicular grounding module 5 is crisscross, perpendicular grounding body 4 adopts phi 14.2 x 2500mm copper-plated steel bar, perpendicular grounding module 5 adopts cylindrical carbon element grounding module.
The building foundation natural grounding body 1 is connected with an outgoing grounding electrode 10, the outgoing grounding electrode 10 is connected with a total equipotential grounding terminal plate 7 through a total outgoing line 6, and the total equipotential grounding terminal plate 7 is connected with a grounding main line 8; the building foundation natural grounding body 1 and the horizontal annular grounding body 2 are positioned below the ground 9; the building foundation natural grounding body 1 is respectively connected with the photovoltaic module 12 through the grounding wire down lead 11, the main lead 6 is led out to the grounding main line 8 through the main equipotential grounding terminal plate 7, the grounding resistance is reduced, the lightning current is led into the ground, the ground potential is reduced, and the grounding effect is enhanced.
An anti-corrosion layer 13 is arranged between the ground 9 and the building foundation natural grounding body 1 and the horizontal annular grounding body 2, so that the total grounding resistance can be reduced, an equipotential surface can be formed by a grounding system which is mutually meshed and interweaved, the overvoltage generated by lightning between ground wires is obviously reduced, and high-efficiency and reliable lightning protection can be provided for a photovoltaic power station.
The distance between the ground 9 and the building foundation natural grounding body 1 and the horizontal annular grounding body 2 is H, the H is 800-plus-1000 mm, after the horizontal annular grounding body 2, the vertical grounding body 4 and the pole core of the vertical grounding module 5 are subjected to heat radiation welding, and are connected with the building foundation natural grounding body 1 after being buried at a depth of not less than 0.8m to form a main grounding network, and the photovoltaic module 12 is connected with the main grounding network through a grounding wire down lead 11.
The distance between the vertical grounding body 4 and the vertical grounding module 5 is D, and D is more than or equal to 5000 mm.
The down lead 11 of the grounding wire is connected with the natural grounding body 1 of the building foundation through a crimping terminal.
The basic principles and main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a photovoltaic power plant ground structure which characterized in that: the grounding device comprises a building foundation natural grounding body, a horizontal annular grounding body, a connecting wire, a vertical grounding body, a vertical grounding module, a main outgoing line, a main equipotential grounding terminal board, a grounding main line, the ground, an outgoing grounding electrode, a grounding wire down lead and a photovoltaic assembly; the periphery of the building foundation natural grounding body is provided with a horizontal annular grounding body, and the building foundation natural grounding body is connected with the horizontal annular grounding body through a connecting wire; a plurality of equidistant vertical grounding bodies and a plurality of equidistant vertical grounding modules are uniformly distributed on the horizontal annular grounding body, and the vertical grounding bodies and the vertical grounding modules are arranged in a staggered manner; the building foundation natural grounding body is connected with an outgoing grounding electrode, the outgoing grounding electrode is connected with a total equipotential grounding terminal board through a total outgoing line, and the total equipotential grounding terminal board is connected with a grounding main line; the building foundation natural grounding body and the horizontal annular grounding body are positioned below the ground; the building foundation natural grounding body is connected with the photovoltaic module through the grounding wire down lead.
2. The photovoltaic power plant grounding structure of claim 1, wherein: and an anticorrosive layer is arranged between the ground and the building foundation natural grounding body and between the ground and the horizontal annular grounding body.
3. The photovoltaic power plant grounding structure of claim 1, wherein: the distance between the ground and the natural grounding body and the horizontal annular grounding body of the building foundation is H, and H is 800-1000 mm.
4. The photovoltaic power plant grounding structure of claim 1, wherein: the distance between the vertical grounding body and the vertical grounding module is D, and D is more than or equal to 5000 mm.
5. The photovoltaic power plant grounding structure of claim 1, wherein: the grounding wire down lead is connected with the building foundation natural grounding body through a crimping terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921160979.3U CN209993732U (en) | 2019-07-23 | 2019-07-23 | Photovoltaic power plant ground structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921160979.3U CN209993732U (en) | 2019-07-23 | 2019-07-23 | Photovoltaic power plant ground structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209993732U true CN209993732U (en) | 2020-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921160979.3U Expired - Fee Related CN209993732U (en) | 2019-07-23 | 2019-07-23 | Photovoltaic power plant ground structure |
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| Country | Link |
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| CN (1) | CN209993732U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114050425A (en) * | 2021-11-03 | 2022-02-15 | 国网山东省电力公司临沂供电公司 | Method for manufacturing lightning protection grounding grid |
-
2019
- 2019-07-23 CN CN201921160979.3U patent/CN209993732U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114050425A (en) * | 2021-11-03 | 2022-02-15 | 国网山东省电力公司临沂供电公司 | Method for manufacturing lightning protection grounding grid |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200124 Termination date: 20210723 |