KR101612747B1 - Ground system for electric supply line - Google Patents

Abstract

The present invention relates to a system for grounding an electric distribution line, which is capable of more easily installing ground bars for grounding an underground line through the medium of a manhole and at the same time, easily maintaining and repairing the ground bars. The system for grounding an electric distribution line according to the present invention includes a manhole neck, upper and lower manhole blocks, a grounding member, an insulating plate, a camera, a wireless communication module, a manhole cover, a solar cell panel, a secondary battery, and first and second connectors. According to the above configuration, the ground bars for grounding an underground distribution line through the medium of a manhole may be more easily installed and at the same time, may be easily maintained and repaired. Thus, a process of burying the grounding bars, which is inconvenient and requires a long time, may be omitted. When the installed state of the underground distribution lines in the manhole is out of order or the malfunction is worsened and the grounding and short circuit occur, a corresponding situation is exactly understood in real time so that related treatments may be rapidly performed.

Description

[0001] The present invention relates to a ground system for electric supply line,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grounding method for a distribution line in a distribution field, and more particularly, to a grounding method for grounding distribution lines, in which grounding rods for grounding a ground distribution line can be installed more easily through a manhole, To a grounding method system.

Generally, the grounding equipment provided in the power distribution line is made of a grounding rod made of a metal such as copper, and the grounding bar contacts with the earth and is connected to the power distribution line through the power line to ground the power distribution line. At this time, grounding rod causes corrosion or deterioration due to long-term use, which leads to deterioration of grounding performance. Therefore, it is necessary to regularly measure the grounding resistance of the distribution line to check and maintain the grounding condition.

However, in the case of underground distribution lines, many buried along a road or a sidewalk. Therefore, when the maintenance work of a grounding facility such as replacing a ground rod is carried out, the ground of a car or a sidewalk is searched, Thereby causing inconvenience to vehicle traffic or walking for a relatively long period of time.

On the other hand, a manhole refers to a hole or a facility that enables a worker to carry out inspection, repair, or cleaning of a water pipe, a sewage pipe, wiring (wiring), etc. buried in the ground, It is common to be buried.

However, in addition to underground distribution lines, water pipes and sewage pipes are buried in the manhole, so that the workers are frequently moved on and off, and at the same time checking and maintenance work is carried out on the relevant facilities. In this process, So that the risk of short-circuiting or grounding is increased due to the weakening of the connection portion between the underground distribution lines in the manhole.

Korean Patent Laid-Open No. 10-2012-0133766 (published Dec. 12, 2012), "Method of constructing a distribution line using a combined ground wire using a grounding electric pole" Korean Patent Registration No. 10-1012564 (issued on Mar. 23, 2011), "

The embodiments of the present invention can easily install the ground rods for grounding of the underground distribution line through the manhole and can easily perform the maintenance, which requires the cumbersome and time-consuming work for grounding the underground distribution line A grounding system for a distribution line is provided which allows the grounding rod embedding process to be omitted.

In addition, the embodiment of the present invention can be applied to a distribution line that enables accurate detection of a situation in case of an accident such as a ground fault or short-circuit due to an abnormality or abnormality in the installation state of an underground distribution line in a manhole, The grounding method of the present invention.

The grounding method of a distribution line according to an embodiment of the present invention includes a manhole for forming an upper portion of a manhole and an upper end exposed to the ground to form an entrance to the manhole, A top manhole block formed on an upper surface of the upper manhole block and having a plurality of electric wire holes formed on a side surface thereof for passing through a distribution line and opened at a lower portion thereof and embedded in the ground; A lower manhole block having an upper end connected to a lower end of the upper manhole block and having a plurality of wire holes for passing through a distribution line, a plurality of ground holes formed on a lower surface of the lower manhole block, A ground bar embedded in the ground through a ground hole of the lower manhole block and a ground bar placed at one end in the longitudinal direction of the ground bar And a head portion which is formed to have a width larger than an inner diameter of the ground hole and which is mounted on a region around the ground hole on the inner surface of the lower manhole block and has coupling projections and coupling grooves formed on both sides of the opposite direction, A plurality of grounding members connected in series through coupling between the grounding members and the grounding members, and a plurality of grounding members provided on the inner lower portion of the lower manhole block in a state of insulating the grounding members from the inside of the lowering manhole block, An insulation plate having a plurality of corresponding ground wire holes formed therein and a distribution line provided inside the upper manhole block or the lower manhole block for passing through a wire hole of the upper manhole block or a wire hole of the lower manhole block, The connection state of the ground wire to the ground member is photographed in accordance with a predetermined cycle, A camera for outputting the image data in real time and synchronously outputting the identification information of the manhole including the manhole, the upper manhole block, and the lower manhole block in synchronization with the image data; A manhole cover covering the upper end of the manhole and covering the upper end of the manhole and transmitting light through the manhole cover to the management room; A secondary battery coupled to the manhole cover or the solar panel in a state of storing electricity generated through the solar panel; a first connector to which the secondary battery is electrically connected; And the wireless communication module are electrically connected to each other, and at the same time, And a second connector for applying power of the secondary battery to the camera and the wireless communication module while being coupled with the first connector.

According to the embodiment of the present invention, the ground rods for grounding the underground distribution line can be installed more easily through the manhole, and maintenance can be easily performed. Therefore, the conventional cumbersome and time- Can be omitted.

In addition, when the installation condition of the underground distribution line in the manhole is abnormal or the degree of abnormality is excessive, when the occurrence of an accident such as a ground fault or short circuit, the situation can be accurately grasped in real time and related measures can be taken quickly.

1 is a perspective view showing an external configuration of a grounding method system of a distribution line according to an embodiment of the present invention,
2 is a cross-sectional view showing an internal configuration of a grounding method system of a distribution line according to an embodiment of the present invention.
3 is a block diagram showing an electrical configuration of a grounding method system for a distribution line according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with one embodiment. It is also to be understood that the position or arrangement of the individual components within each described embodiment may be varied without departing from the spirit and scope of the present invention.

The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which the claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term, not on the name of a simple term, but on the entire contents of the present invention.

Whenever an element is referred to as " including " an element throughout the description, it is to be understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise. In addition, "... "... Module " or the like means a unit for processing at least one function or operation, which may be implemented in hardware or software, or a combination of hardware and software.

1 to 3, a description will be made of a grounding method system of a distribution line according to an embodiment of the present invention.

FIG. 1 is a perspective view showing an external configuration of a grounding method system of a distribution line according to an embodiment of the present invention in a separated state. FIG. 2 is a perspective view illustrating an internal configuration of a grounding method system of a distribution line according to an embodiment of the present invention. And FIG. 3 is a block diagram showing an electrical configuration of a grounding method system according to an embodiment of the present invention.

As shown in the drawings, a grounding method for a distribution line according to an embodiment of the present invention includes a manhole, a top manhole block, a bottom manhole block, a plurality of grounding members, an insulation plate, a camera, a wireless communication module, , A secondary battery, a first connector, and a second connector.

The manhole (10) has a pipe shape penetrating in the up and down direction, and is embedded in the ground in a state of connecting the upper penetrating area with the ground. That is, the manhole 10 forms the upper part of the manhole and also connects the ground and the ground inside the manhole, and the operator enters and exits the inside of the manhole through the manhole 10.

The upper manhole block 20 and the lower manhole block 30 are coupled to each other in such a manner that the inner spaces communicate with each other to form the main body of the manhole, that is, the manhole 10 is coupled to the upper part of the upper manhole block 20 . The construction of each of the upper manhole block 20 and the lower manhole block 30 will be described.

The upper manhole block 20 is formed with an open hole 21 on the upper surface connected to the lower end of the manhole 10 and a plurality of electric wire holes 22 for passing the electric power distribution line 200 are formed on the side surface. The upper manhole block 20 has a lower opening.

The lower manhole block 30 has an upper opening to communicate with the inside of the upper manhole block 20 and has an upper end connected to the lower end of the upper manhole block 20 and has a plurality of A wire hole 31 is formed on the side surface. The lower manhole block 30 has a plurality of ground holes 32 formed on the lower surface thereof.

As described above, the upper manhole block 20 and the lower manhole block 30 are connected to each other through the inner space and are buried in the ground. The upper manhole block 20 and the lower manhole block 30 The operator enters and exits through the manhole 10.

The grounding member 40 includes a grounding rod portion 41 and a head portion 42. The configuration of the grounding rod portion and the head portion will be described as follows.

The grounding rod portion 41 is embedded in the ground through the ground hole 32 of the lower manhole block 30 so that the lower end of the grounding rod portion 41 can be more easily inserted into the ground It has a pointed tip shape.

The head portion 42 is formed at an upper end in the longitudinal direction of the grounding bar portion 41 to have a width larger than the inner diameter of the ground hole 32 and is mounted in a region around the ground hole 32 on the inner surface of the lower manhole block 30, The engaging portion 42 is formed with engaging projections 42a and engaging grooves 42b on opposite sides of the opposite direction. The coupling protrusions 42a and the coupling grooves 42b of the head portion 42 are for mutual coupling between the head portions 42 of the grounding members 40. In other words, 42 can be connected in series by mutual coupling between the engaging projections 42a and the engaging grooves 42b formed in the first and second engaging portions 42,

The insulating plate 50 is installed on the inner lower side of the lower manhole block 30 in such a manner that the grounding members 40 are insulated from the inside of the lower manhole block 30. The insulating plate 50 is connected to the grounding member 40, A plurality of grounding line holes 51 are formed corresponding to the head portions 42 of the grounding portions 42. [

The ground wire cap 52 of the corresponding size is prepared in the same material as the insulating plate 50 so that the ground wire hole 51 is not used or the grounding member 40 is insulated from the inside of the manhole Is used when it is necessary to maintain the < / RTI >

The inner circumferential surface of the grounding wire hole 51 and the outer circumferential surface of the grounding wire cap 52 are respectively formed with threads corresponding to each other and screwed together.

The grounding structure of the distribution line 200 can be constructed together with the manhole in the process of embedding the manhole by the construction of the grounding member 40 and the insulation plate 50 and the construction process is relatively easy Can proceed. In addition, when the grounding member (40) causing corrosion or deterioration of the grounding rod (41) is generated, the cover state of the insulating plate (50) with respect to the grounding members (40) is released from the inside of the manhole, Only the corresponding grounding member 40 needs to be replaced. Therefore, the maintenance and management of the grounding structure for the distribution line can be performed with very easy and efficient operation.

And a distribution line 200 passing through the wire holes 22 and 31 of the upper manhole block 20 or the lower manhole block 30 through the grounding member 40 is grounded, A plurality of medium wires 310 are connected to the neutral wire connection points 320 in common and a ground wire 330 is connected to the neutral wire connection point 320 so that the ground wire 330 are connected to the grounding bar portion 41 of the grounding member 40 through the grounding line hole 51 of the insulating plate 50 so that the wire holes of the upper manhole block 20 or the lower manhole block 30 22, and 31 are grounded in the ground.

The camera 60 is installed in the upper manhole block 20 or the lower manhole block 30 and passes through the wire holes 22 of the upper manhole block 20 or the wire holes 31 of the lower manhole block 30 And outputs the photographed image data in real time after photographing the grounding state of the power distribution line 200 and the grounding member 40 of each power distribution line 200 according to a predetermined period. At this time, the camera 60 outputs the identification information of the manhole including the manhole 10, the upper manhole block 20, and the lower manhole block 30 in synchronization with the image data.

The wireless communication module 70 transmits the image data output from the camera 60 to the control room managing the distribution line in real time.

By the camera 60 and the wireless communication module 70, the manager of the control room managing the distribution line 200 visually confirms the display image in a state in which identification numbers are displayed together for each manhole, 200 and the grounding state.

The manhole cover covers the top exposed to the ground of the manhole, and the manhole cover is formed of a transparent material.

The solar panel is connected to the lower surface of the manhole cover and generates electricity using light transmitted through the manhole cover.

The secondary battery is coupled to the manhole cover or the solar panel in a state of storing electricity generated through the solar panel.

The first connector is electrically connected to the secondary battery. The second connector is electrically connected to the camera and the wireless communication module, and at the same time, the first connector can be attached to and detached from the first connector. To the camera and the wireless communication module.

In other words, the power of the secondary battery is applied to the camera and the wireless communication module through the mechanical and electrical connection of the first connector and the second connector.

1 through 3, the grounding method of the distribution line according to the present invention enables the grounding rods for grounding the underground distribution line to be more easily installed through the manhole Maintenance can be easily performed, and therefore, it is possible to omit the conventional cumbersome and time-consuming burr process for grounding the underground distribution line.

In addition, when the installation condition of underground distribution line in the manhole is abnormal or the degree of abnormality is serious, in case of occurrence of an accident such as a ground fault or short circuit, the situation can be grasped in real time so that related measures can be taken promptly.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the exemplary embodiments or constructions. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described above, and all of the equivalents or equivalents of the claims, as well as the claims, will be included in the scope of the present invention.

100: Manhole neck 20: Upper manhole block
21: Opening hole 22: Wire hole
30: Lower manhole block 31: Wire hole
32: ground hole 40: grounding member
41: grounding rod portion 42: head portion
42a: engaging projection 42b: engaging hole
50: Insulation plate 51: Ground wire hole
60: camera 70: wireless communication module
80: Manhole cover 90: Solar panel
100: secondary battery 110: first connector
120: second connector 200: distribution line
310: Neutral line 320: Neutral line connection point
330: Ground lead wire

Claims (1)

A manhole which forms an upper part of the manhole and has an upper end exposed to the ground to form an entrance to the manhole;
An upper manhole block formed on an upper surface of the manhole and formed with a plurality of electric wire holes for passing through a distribution line, the lower manhole block being buried in the ground;
The upper manhole block is connected to the lower end of the upper manhole block. A plurality of electric wire holes for passing the distribution line are formed on the side surface and a plurality of ground holes are formed on the lower surface of the lower manhole block. And a lower manhole block embedded in the ground, the grounding system comprising:
A ground bar embedded in the ground through the ground hole of the lower manhole block and a ground electrode formed at one end in the longitudinal direction of the ground bar to have a width larger than an inner diameter of the ground hole and being mounted on an area around the ground hole on the inner surface of the lower manhole block A plurality of grounding members including a head portion having coupling projections and coupling grooves formed on both sides of opposite sides thereof and connected to each other via coupling projections and coupling grooves of the head portion;
An insulating plate provided on an inner lower portion of the lower manhole block to insulate the grounding members from the inside of the lower manhole block and having a plurality of grounding line holes respectively corresponding to the head portions of the grounding members;
A distribution line provided inside the upper manhole block or the lower manhole block and passing through a wire hole of the upper manhole block or a wire hole of the lower manhole block and a connection state of the ground wire to each grounding line to the grounding member, A camera for outputting photographed image data in real time in synchronism with the image data and outputting the identification information of the manhole including the manhole, the upper manhole block and the lower manhole block;
A wireless communication module for transmitting video data output from the camera to a control room managing a distribution line in real time;
A manhole cover formed of a transparent material covering an upper end exposed to the ground of the manhole;
A solar panel coupled to a lower surface of the manhole cover to generate electricity using light transmitted through the manhole cover;
A secondary battery coupled to the manhole cover or the solar panel in a state of storing electricity generated through the solar panel;
A first connector electrically connected to the secondary battery;
A second connector for electrically connecting the camera and the wireless communication module to the camera and the wireless communication module while being connected to the first connector, Including,
The lower end of the ground bar 41 in the longitudinal direction has a pointed tip,
The ground wire hole 51 is further provided with a ground wire cap 52 having a size corresponding to that of the insulation plate 50 and made of the same material as the insulation plate 50,
Corresponding threads are formed and screwed on the inner circumferential surface of the ground wire hole 51 and the outer circumferential surface of the ground wire cap 52,
The neutral conductor 310 is commonly connected to the neutral conductor connection point 320. The neutral conductor connection point 320 is connected to the ground lead conductor 330 and the neutral conductor 310 is connected to the neutral conductor connection point 320. [ Wherein one end of the lead wire (330) is connected to the ground bar (41) of the ground member (40) through the ground wire hole (51) of the insulating plate (50).

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