CN111864420A - Three-dimensional ground net - Google Patents
Three-dimensional ground net Download PDFInfo
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- CN111864420A CN111864420A CN202010697800.9A CN202010697800A CN111864420A CN 111864420 A CN111864420 A CN 111864420A CN 202010697800 A CN202010697800 A CN 202010697800A CN 111864420 A CN111864420 A CN 111864420A
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- grounding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
Abstract
The invention belongs to the technical field of lightning protection grounding of a power transmission line, and particularly relates to a three-dimensional grounding grid which comprises an inclined grounding body, a vertical grounding body and a horizontal grounding frame; the front end of the inclined grounding body is connected with the grounding lead-in wire, the tail end of the inclined grounding body extends to the lower part of the ground at an inclined angle with the ground, the front end of the vertical grounding body is connected with the inclined grounding body, the tail end of the vertical grounding body extends to the underground vertically, the horizontal grounding frame comprises a first horizontal grounding frame and a second horizontal grounding frame, the first horizontal grounding frame is sequentially connected with the inclined grounding body, and the second horizontal grounding frame is positioned on the horizontal plane where the tail end of the inclined grounding body is positioned; according to the embodiment of the invention, the three-dimensional annular ground net is arranged, and the contact area with the soil is increased through the design of the inclination angle, so that the conduction of lightning stroke instant current is more convenient; the land occupation area is reduced, the influence of the overlarge arrangement range of the plane ground screen on the surrounding environment is avoided, and the method is more suitable for complex terrains such as mountains and hills.
Description
Technical Field
The invention relates to the technical field of lightning protection grounding of power transmission lines, in particular to a three-dimensional ground grid.
Background
Along with the change of environmental climate and the increasing demand of electric quantity, the layout scale of the power transmission line is increased; along with the increase of extreme weather, the number of times of lightning strikes on a line is increased, the lightning current amplitude of the lightning strikes is also increased continuously, in recent years, the lightning current exceeding 400kA exists, and the instantaneous impact current formed by the lightning current with a large amplitude brings great challenges to the underground current leakage capacity of a ground grid of the iron tower. The grounding grid is used as a main lightning protection means and is popularized to all towers in a large area, and the traditional grounding grid design adopts a method of extending a horizontal net to four directions, and galvanized round steel bars of 5cm are buried at a distance of 50-100cm from the ground surface. The method has large floor area, the four directions horizontally extend to be beyond 30 meters, the influence on the periphery of the iron tower is very large, and weak current equipment such as civil electric appliances, street lamps and the like which are paved on the periphery of the ground net can be influenced and even damaged during drainage. In addition, the iron tower earth screen is buried according to the traditional arrangement mode, when lightning current exceeds more than 200kA, lightning stroke counterattack line tripping can be caused due to insufficient current discharge capacity of the iron tower, the consequences caused by the tripping are multiphase tripping and reclosing failure, line disconnection can cause power failure or peak-load power supply in a certain area, and the consequences caused by power failure or peak-load power supply in an important area or important power supply customers are disastrous.
In addition, when the traditional ground net is applied to complex terrain environments such as mountains and hills, the traditional ground net is limited, for example, the horizontal plane for arranging the ground net is small, and the whole laying of the ground net cannot be completed. In some improved three-dimensional ground nets, although a vertical grounding body is used for reducing resistance, a horizontal ground net close to the ground needs to be laid, and the occupied area is too large.
Disclosure of Invention
The invention aims to provide a three-dimensional ground net which is arranged in a three-dimensional annular mode, so that the floor area is reduced, the influence of a large arrangement range of a plane ground net on the surrounding environment is avoided, and the three-dimensional ground net is more suitable for complex terrains such as mountains, hills and the like; the circuit solves the problem of influence and even damage of instantaneous impact current formed by large-amplitude lightning current on the circuit, and is convenient for conduction of lightning instantaneous current.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a three-dimensional ground net, comprising:
the inclined grounding body is inclined to the ground, the front end of the inclined grounding body is connected with a grounding lead-in wire, and the tail end of the inclined grounding body extends to the lower side of the ground;
the front end of the vertical grounding body is connected with the inclined grounding body, and the tail end of the vertical grounding body vertically extends underground;
The horizontal grounding frame comprises a first horizontal grounding frame and a second horizontal grounding frame, the first horizontal grounding frame is sequentially connected with a plurality of inclined grounding bodies, the second horizontal grounding frame is located at the horizontal plane where the tail ends of the inclined grounding bodies are located, and the second horizontal grounding frame is located below the first horizontal grounding frame.
As a preferable structure of the invention, the inclined angle of the inclined grounding body and the ground is 30-60 degrees; the three-dimensional grounding grid comprises four inclined grounding bodies which are uniformly distributed along the circumferential direction, and the horizontal included angle between the adjacent inclined grounding bodies is 90 degrees.
As a preferable structure of the present invention, a plurality of the vertical ground bodies are arranged on each of the oblique ground bodies, and the plurality of the vertical ground bodies are arranged at regular intervals on the oblique ground body.
As a preferable structure of the present invention, the number of the first horizontal ground frames is plural, the first horizontal ground frames are connected to the front ends of the vertical ground bodies on the same horizontal plane, and the vertical distances of the plural first horizontal ground frames are uniformly spaced.
As a preferable structure of the present invention, the second horizontal ground frame is provided around the tip of the inclined ground body.
In a preferred configuration of the present invention, the second horizontal ground frames are plural, and the plural second horizontal ground frames are arranged in a matrix.
As a preferable structure of the present invention, the first horizontal ground frame and the second horizontal ground frame are both square.
As a preferred structure of the present invention, the vertical grounding body is provided with a horizontal short conductor, and the horizontal short conductor and the vertical grounding body are arranged in a crisscross manner.
As a preferable structure of the present invention, there are a plurality of the horizontal short conductors on each of the vertical grounding bodies, and the horizontal short conductors are uniformly spaced on the vertical grounding body.
As a preferable structure of the present invention, the three-dimensional earth mat is made of galvanized round steel.
The invention has the beneficial effects that: the three-dimensional ground grid provided by the invention comprises an inclined grounding body, a vertical grounding body and a plurality of layers of horizontal grounding frames, wherein the vertical grounding body is provided with a plurality of horizontal short conductors, and the ground grid is arranged in a three-dimensional annular mode, so that the use of conductor materials is reduced on the premise of reducing the floor area of the ground surface, the influence of too large arrangement range of the planar ground grid on the surrounding environment is avoided, and the three-dimensional ground grid is more suitable for complex terrains such as mountainous regions, hills and the like; through the design of angle of inclination, a plurality of horizontal short conductors and multilayer horizontal grounding net increase with the area of contact of soil, the conduction of the lightning stroke instantaneous current of being more convenient for, security and reliability greatly increased.
Drawings
Fig. 1 is a front view of a three-dimensional earth mat according to a first embodiment of the present invention;
FIG. 2 is a top view of a three-dimensional earth mat according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a vertical ground body according to an embodiment of the invention;
fig. 4 is a structural plan view of a three-dimensional counterpoise provided by the second embodiment of the invention.
In the figure:
10. an inclined ground body; 20. a vertical ground body; 30. a horizontal grounding frame; 31. a first horizontal ground frame; 32. a second horizontal ground frame; 40. a horizontal short conductor; 50. a power transmission iron tower; 60. a ground lead-in.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
Example one
As shown in fig. 1-2, the embodiment of the present invention provides a three-dimensional earth mat, which is disposed after a ground lead 60 of a power transmission tower 50 enters the ground, and includes an inclined ground body 10, a vertical ground body 20, and a horizontal ground frame 30. The length of the inclined grounding body 10 is 8 meters, and the front end of the inclined grounding body is connected with the tail end of the grounding lead-in wire 60; preferably, there are four inclined grounding bodies 10, each inclined grounding body 10 is connected to the grounding lead-in wires 60 at four corners of the power transmission tower 50, as can be seen from the top view of fig. 2, the horizontal included angle between adjacent inclined grounding bodies 10 is 90 degrees, and the uniformly arranged inclined grounding bodies 10 make the current carried by the soil in unit area more even, which is more beneficial to timely current drainage during lightning strike; the tail end of the inclined grounding body 10 extends to the lower part of the ground at an inclined angle with the ground, compared with the traditional horizontal ground net, the inclined angle design has a plurality of advantages, firstly, the inclined grounding body is more convenient for the conduction of lightning stroke instant current, secondly, the inclined grounding body enables the leakage range of the traditional horizontal ground net to be reached by using less conductor materials because the inclined line section is shorter than two vertically crossed straight line sections; and thirdly, the inclined grounding body reduces the floor area of the ground grid under the condition of ensuring the conductivity, and reduces the influence and damage to objects near the ground. The inclined grounding body 10 is provided with a vertical grounding body 20, the front end of the vertical grounding body 20 is connected with the inclined grounding body 10, and the tail end of the vertical grounding body vertically extends to the underground; preferably, a plurality of vertical ground bodies 20 are disposed on each of the inclined ground bodies 10, and the vertical ground bodies 20 are uniformly spaced on the inclined ground bodies 10. In the embodiment of the present invention, one vertical grounding body 20 is disposed at the front end and 4 meters of each inclined grounding body 10, and the length of each vertical grounding body 20 is 4 meters. The vertical grounding bodies 20 at different positions on the inclined grounding body 10 have the same length, the tail ends of the vertical grounding bodies have different reaching depths, and the three-dimensional grounding grid has a wider leakage range and stronger conductive capability in depth due to staggered arrangement. Of course, in other embodiments, according to the requirement of the working environment, the inclined grounding bodies 10 and the vertical grounding bodies 20 with other lengths may also be adopted, or a greater number of vertical grounding bodies 20 are arranged on each inclined grounding body 10, which is not limited to this embodiment. The horizontal grounding frame 30 includes a first horizontal grounding frame 31 and a second horizontal grounding frame 32, as shown in fig. 2, the first horizontal grounding frame 31 is sequentially connected to the inclined grounding bodies 10, preferably, the first horizontal grounding frame 31 includes a plurality of first horizontal grounding frames 31, the first horizontal grounding frame 31 is connected to the front ends of the vertical grounding bodies 20 on the same horizontal plane, that is, the intersection points of the inclined grounding bodies 10 and the vertical grounding bodies 20 are located on the first horizontal grounding frame 31, because a plurality of vertical grounding bodies 20 are arranged on each inclined grounding body 10, a plurality of first horizontal grounding frames 31 are also arranged from top to bottom, and the vertical distances of the plurality of first horizontal grounding frames 31 are uniformly spaced, in the embodiment of the present invention, the number of first horizontal grounding frames 31 is 2, and the first horizontal grounding frames are respectively located on the horizontal planes where the front ends and the middle points of the inclined grounding bodies 10 are located. The second horizontal grounding frame 32 is located at a level where the tip of the inclined grounding body 10 is located, and the second horizontal grounding frame 32 is located below the first horizontal grounding frame 31. Preferably, the second horizontal ground frame 32 is horizontally disposed around the end of the slant ground body 10 as a center. In the present embodiment, there are 4 second horizontal ground frames 32, and 4 second horizontal ground frames 32 are located around the ends of the 4 oblique ground bodies 10 in the same horizontal plane.
Further, the inclination angle of the inclined grounding body 10 and the ground is 30-60 degrees, and the proper inclination angle can not only exert the conductive advantage of the three-dimensional ground net, but also meet the requirement of working environment limited by terrains such as mountains, hills and the like. In the embodiment of the invention, the inclined grounding body 10 with the inclination angle of 40 degrees is adopted, so that the construction difficulty is not large, and the conductive advantage of the three-dimensional grounding grid can be fully exerted.
Further, the first horizontal ground frame 31 and the second horizontal ground frame 32 are square. On one hand, the square grounding frame is adopted, the corner connection part of the conductor is easier to weld, the welding quality is better, and the electric conduction performance is more reliable. On the other hand, the square frame 32 uses a conductor length greater than the perimeter of a circular frame of the same footprint, which means more soil contact area and thus better conductivity.
Further, the vertical grounding body 20 has a short horizontal conductor 40, and as shown in fig. 3, the short horizontal conductor 40 crosses the vertical grounding body 20. Preferably, a plurality of horizontal short conductors 40 are provided on each vertical grounding body 20, and the horizontal short conductors 40 are uniformly spaced on the vertical grounding body 20. In the embodiment of the present invention, each vertical grounding body 20 is welded with a 10cm long horizontal short conductor 40 every 40cm from top to bottom, so that a cumulative length of about 1 meter of conductors is added to each vertical grounding body 20, thereby further increasing the grounding area. The horizontal short conductor 40 increases the contact area with the soil, reduces the conductive resistance, accelerates the diffusion speed of lightning current in the soil, and improves the instantaneous conductivity.
Furthermore, galvanized round steel with the diameter of 5cm is used for the inclined grounding body 10, the vertical grounding body 20 and the horizontal grounding frame 30 in the three-dimensional grounding grid. The galvanized steel has the advantages of corrosion resistance, high temperature resistance and high strength, and the increase of the conductive resistance due to corrosion in the working life of the three-dimensional ground screen is avoided.
Example two
As shown in fig. 4, the embodiment of the present invention provides a three-dimensional earth mat, which is disposed after a ground lead 60 of a transmission tower 50 enters the ground, and includes an inclined ground body 10, a vertical ground body 20, and a horizontal ground frame 30 according to the first embodiment. In the embodiment of the present invention, one vertical ground body 20 is disposed at the front end, 1/3, 2/3, of each slanted ground body 10, and the length of each vertical ground body 20 is 4 meters. The vertical grounding bodies 20 at different positions on the inclined grounding body 10 have the same length, the tail ends of the vertical grounding bodies have different reaching depths, and the three-dimensional grounding grid has a wider leakage range and stronger conductive capability in a depth range due to staggered arrangement. The horizontal grounding frame 30 includes a first horizontal grounding frame 31 and a second horizontal grounding frame 32, as shown in fig. 4, the first horizontal grounding frame 31 is sequentially connected to the inclined grounding bodies 10, preferably, the first horizontal grounding frame 31 includes a plurality of first horizontal grounding frames 31, the first horizontal grounding frame 31 is connected to the front ends of the vertical grounding bodies 20 on the same horizontal plane, that is, the intersection points of the inclined grounding bodies 10 and the direct grounding bodies 20 are located on the first horizontal grounding frame 31, because a plurality of vertical grounding bodies 20 are arranged on each inclined grounding body 10, a plurality of first horizontal grounding frames 31 are also arranged from top to bottom, the vertical distances of the plurality of first horizontal grounding frames 31 are evenly spaced, in this embodiment, the number of first horizontal grounding frames 31 is 3, and the first horizontal grounding frames are respectively located at the front ends of the inclined grounding bodies 10, 1/3, and 2/3.
The second horizontal grounding frame 32 is located at a level where the tip of the inclined grounding body 10 is located, and the second horizontal grounding frame 32 is located below the first horizontal grounding frame 31. Preferably, there are a plurality of the second horizontal grounding frames 32, and the plurality of the second horizontal grounding frames 32 are arranged in a matrix. In the present embodiment, the number of the second horizontal ground frames 32 is 9 in total, and 9 second horizontal ground frames 32 are arranged in a 3 × 3 matrix shape in the same horizontal plane. The resistivity of the deep soil of the ground is lower than that of the surface layer, and more second horizontal grounding frames 32 are arranged on the bottom layer of the three-dimensional ground net, so that the conductive drainage capacity is further enhanced while the floor area of the surface layer is not enlarged.
Further, the inclination angle of the inclined grounding body 10 and the ground is 30-60 degrees, and the proper inclination angle can not only exert the conductive advantage of the three-dimensional ground net, but also meet the requirement of working environment limited by terrains such as mountains, hills and the like.
Further, the first horizontal ground frame 31 and the second horizontal ground frame 32 are square. On one hand, the square grounding frame is adopted, the corner connection part of the conductor is easier to weld, the welding quality is better, and the electric conduction performance is more reliable. On the other hand, the square grounding frame uses a conductor with a length larger than the circumference of a circular grounding frame with the same occupied area, which means that more soil contact area is available, so that the conductivity is better.
Furthermore, the vertical grounding body 20 is provided with a short horizontal conductor 40, and the short horizontal conductor 40 and the vertical grounding body 20 are arranged in a crisscross manner. Preferably, a plurality of horizontal short conductors 40 are provided on each vertical grounding body 20, and the horizontal short conductors 40 are uniformly spaced on the vertical grounding body 20. The horizontal short conductor 40 increases the contact area with the soil, reduces the conductive resistance, accelerates the diffusion speed of lightning current in the soil, and improves the instantaneous conductivity.
Furthermore, galvanized round steel with the diameter of 5cm is used for the inclined grounding body 10, the vertical grounding body 20 and the horizontal grounding frame 30 in the three-dimensional grounding grid. The galvanized steel has the advantages of corrosion resistance, high temperature resistance and high strength, and the increase of the conductive resistance due to corrosion in the working life of the three-dimensional ground screen is avoided.
The three-dimensional ground screen provided by the embodiment of the invention is more convenient for the conduction of lightning stroke instant current through the design of the conductor inclination angle; more conductors are arranged, so that the contact area with the soil is increased; the bottom layer of the three-dimensional ground screen is provided with more second horizontal grounding frames 32, so that the conductive current leakage capacity is further enhanced while the occupied area of the surface layer is not enlarged, and the lightning current exceeding 400kA has a better lightning protection effect.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A three-dimensional counterpoise, comprising:
the inclined grounding body (10), the inclined grounding body (10) and the ground form an inclined angle, the front end of the inclined grounding body (10) is connected with a grounding lead-in wire (60), and the tail end of the inclined grounding body (10) extends towards the lower part of the ground;
the front end of the vertical grounding body (20) is connected with the inclined grounding body (10), and the tail end of the vertical grounding body (20) vertically extends underground;
horizontal grounding frame (30), horizontal grounding frame (30) includes first horizontal grounding frame (31) and second horizontal grounding frame (32), first horizontal grounding frame (31) connects gradually a plurality ofly slope grounding body (10), second horizontal grounding frame (32) are located the horizontal plane at the end place of slope grounding body (10), second horizontal grounding frame (32) are located the below of first horizontal grounding frame (31).
2. The stereoscopic earth screen of claim 1, characterized in that the inclined angle of the inclined earth body (10) to the ground is 30-60 degrees; the three-dimensional grounding grid comprises four inclined grounding bodies (10) which are uniformly distributed along the circumferential direction, and the horizontal included angle between the adjacent inclined grounding bodies (10) is 90 degrees.
3. The space earth grid according to claim 1, characterized in that a plurality of said vertical earth-grounded bodies (20) are arranged on each of said slanted earth-grounded bodies (10), a plurality of said vertical earth-grounded bodies (20) being arranged evenly spaced on said slanted earth-grounded body (10).
4. The three-dimensional ground grid according to claim 1, wherein the number of the first horizontal ground frames (31) is plural, the first horizontal ground frames (31) are connected to the front ends of the vertical ground bodies (20) on the same horizontal plane, and the vertical distances of the plural first horizontal ground frames (31) are uniformly spaced.
5. Three-dimensional counterpoise according to claim 1, characterized in that said second horizontal grounding frame (32) is placed around the ends of said inclined grounding body (10).
6. The stereoscopic earth mat as claimed in claim 1, wherein the second horizontal earth frames (32) are plural, and the plural second horizontal earth frames (32) are arranged in a matrix.
7. Three-dimensional earth screen according to claim 1, characterized in that the first horizontal earth frame (31) and the second horizontal earth frame (32) are both square.
8. The three-dimensional grounding grid according to claim 1, wherein the vertical grounding body (20) is provided with a horizontal short conductor (40), and the horizontal short conductor (40) is arranged in a criss-cross manner with the vertical grounding body (20).
9. The counterpoise according to any one of claims 1-8, wherein there are a plurality of said short horizontal conductors (40) on each of said vertical ground contacting bodies (20), said short horizontal conductors (40) being evenly spaced on said vertical ground contacting bodies (20).
10. The three-dimensional counterpoise according to any one of claims 1-9, wherein said three-dimensional counterpoise is made of galvanized round steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010697800.9A CN111864420A (en) | 2020-07-20 | 2020-07-20 | Three-dimensional ground net |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010697800.9A CN111864420A (en) | 2020-07-20 | 2020-07-20 | Three-dimensional ground net |
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| CN111864420A true CN111864420A (en) | 2020-10-30 |
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| CN202010697800.9A Pending CN111864420A (en) | 2020-07-20 | 2020-07-20 | Three-dimensional ground net |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022208422A1 (en) * | 2021-03-31 | 2022-10-06 | Terna S.P.A. | Grounding system for towers of overhead power lines |
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| CN2459767Y (en) * | 2000-12-20 | 2001-11-14 | 梁清强 | Outer inclind deep hole grounding device |
| CN2704952Y (en) * | 2004-08-23 | 2005-06-15 | 孟庆彬 | Lightning protective ground surface screen apparatus on high mountain |
| CN105048434A (en) * | 2015-07-07 | 2015-11-11 | 广东南方电信规划咨询设计院有限公司 | Outdoor optical cross-connection device lightning protection grounding system of wireless far-end TD-LTE network |
| CN205141163U (en) * | 2015-11-20 | 2016-04-06 | 韶关市擎能设计有限公司 | Tower grounding net that area is little |
| CN207994094U (en) * | 2018-02-13 | 2018-10-19 | 四平电力设计有限公司 | A kind of grounding net of transformer substation |
| CN111244629A (en) * | 2020-01-08 | 2020-06-05 | 北方工业大学 | Lightning protection grounding method of shared iron tower |
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2020
- 2020-07-20 CN CN202010697800.9A patent/CN111864420A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2459767Y (en) * | 2000-12-20 | 2001-11-14 | 梁清强 | Outer inclind deep hole grounding device |
| CN2704952Y (en) * | 2004-08-23 | 2005-06-15 | 孟庆彬 | Lightning protective ground surface screen apparatus on high mountain |
| CN105048434A (en) * | 2015-07-07 | 2015-11-11 | 广东南方电信规划咨询设计院有限公司 | Outdoor optical cross-connection device lightning protection grounding system of wireless far-end TD-LTE network |
| CN205141163U (en) * | 2015-11-20 | 2016-04-06 | 韶关市擎能设计有限公司 | Tower grounding net that area is little |
| CN207994094U (en) * | 2018-02-13 | 2018-10-19 | 四平电力设计有限公司 | A kind of grounding net of transformer substation |
| CN111244629A (en) * | 2020-01-08 | 2020-06-05 | 北方工业大学 | Lightning protection grounding method of shared iron tower |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022208422A1 (en) * | 2021-03-31 | 2022-10-06 | Terna S.P.A. | Grounding system for towers of overhead power lines |
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Application publication date: 20201030 |