KR101632984B1 - The ground rod installation method for electric pole - Google Patents

Abstract

A method of constructing a ground pole of a pole is disclosed. According to an embodiment of the present invention, there is provided a method for constructing a ground pole of a pole, comprising the steps of: a) providing a plurality of ground poles at regular intervals along a circumference of the pole; A step b) of series-connecting the grounding lead of the pole and the grounding lead of the earth electrodes so as to correspond to each case derived according to the permutation of the earth electrodes; And measuring the ground resistance of each of the above cases and comparing the measured ground resistance with each other to obtain a case where the grounding effect is maximized by providing at least grounding poles among the cases derived from the permutation of the grounding poles.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a ground electrode,

The present invention relates to a method for constructing a ground pole of a pole capable of achieving a maximum grounding effect with a minimum grounding pole construction.

Generally, in order to secure electric stability from lightning or surge in various electric facilities such as electric pole, street light, and switchboard (hereinafter referred to as Jeonju), earth pole is installed in the ground to prevent various safety accidents caused by electric leakage .

1 is a conceptual view showing a state in which a conventional electric pole earth pole is installed. Referring to FIG. 1, the first ground electrode 112 is buried with a hammer or an electric hammer around the electric pole 100. If the specified grounding resistance can not be secured by constructing the first grounding electrode 112, the second grounding electrode 114 is additionally disposed in parallel with the first grounding electrode 112 at a distance of 2 m or more.

The connection between the electric poles 100 and the grounding electrodes 112 and 114 is carried out by pulling out the electric pole grounding wire 104 through the grounding wire inlet 101 and the grounding wire outlet 102 formed on the upper and lower portions of the electric pole 100, The ground leads 112a and 114a connected to the upper portions of the grounding electrodes 112 and 114 are connected by the compression connection method using the grounding sleeve 108. [

The ground lead out port 102 is formed at a position of 1 m or less from the ground G and the ground lead wires 112a and 114a are embedded in the ground G so as to be 0.75 m or more. On the other hand, copper rods are mainly used as the grounding electrodes 112 and 114.

However, in the case of excavation up to a depth of 75 cm in order to burrow the earth pole in the construction of the conventional pole earth pole, there is a case where the underground buried material such as water pipe, gas pipe and communication cable is damaged in the city area. And there is a problem that it takes a lot of work time.

In addition, when the grounding pole construction is completed without ensuring the grounding resistance to the specified value in order to avoid underground objects, the transformer, switchgear, and lightning arrester installed in the pole can not be quickly distributed through the grounding pole in case of lightning or surge, There is a problem that the possibility is high.

Therefore, a method of constructing a ground pole of a pole is sought to avoid the buried underground buried material and achieve the maximum ground effect.

Embodiments of the present invention are characterized in that a plurality of grounding electrodes are installed at regular intervals along the circumference of a pole and at least ground electrodes are provided to measure and compare the grounding resistances according to the order of the grounding electrodes, To provide a method of constructing a ground pole of a pole capable of maximizing a grounding effect while avoiding buried underground buried grounds.

According to an aspect of the present invention, there is provided a method comprising: a step of installing a plurality of grounding electrodes at equal intervals along a circumference of a pole, and assigning an identification symbol to each of the grounding electrodes; A step b) of series-connecting the grounding lead of the pole and the grounding lead of the earth electrodes so as to correspond to each case derived according to the permutation of the earth electrodes; And measuring and comparing the grounding resistance of each of the above cases to derive a case in which at least one grounding pole is provided among the cases derived from the permutation of the grounding poles to exhibit the maximum grounding effect. A method can be provided.

The method may further include a1 step of measuring individual ground resistances of the earth electrodes by connecting the pole ground wire of the pole and the ground lead of the earth poles after step a.

The method may further include a step d of interconnecting the ground lead wires of the earth electrodes corresponding to both extremes of the permutation corresponding to the case where the minimum earth electrodes are provided after step c to exhibit the maximum earth effect.

According to another aspect of the present invention, there is provided a method of manufacturing a plasma display panel, comprising: a first step of installing a first earth electrode so as to be separated from a ground wire outlet of a preform by 6 to 8 cm; A second step of installing a second earth electrode at a position where the first earth electrode installation position is rotated counterclockwise by 90 degrees with respect to the center of the electric pole; A third step of installing a third earth electrode at a position where the second earth electrode installation position is rotated counterclockwise by 90 degrees with respect to the center of the electric pole; Connecting the first ground lead wire of the first earth electrode to the first ground lead wire of the third earth electrode and connecting the first ground lead wire of the third earth electrode to the third ground lead wire of the third earth electrode, Step 4; And connecting the third ground lead wire to the second ground lead line of the second earth electrode in a clockwise direction with respect to the center of the electric pole.

And a sixth step of connecting the second ground lead wire of the second earth electrode to the first ground lead wire of the first earth electrode in a clockwise direction with respect to the center of the electric pole after the fifth step can do.

Embodiments of the present invention can provide a ground electrode by avoiding buried underground buried objects by providing a plurality of ground electrodes along the circumference of the pole.

Further, by providing a ground electrode around the electric pole to greatly narrow the construction area, it is possible to construct the ground electrode more quickly and with a reduced cost.

The grounding efficiency of the pole can be maximized by deriving the case in which the grounding effect of the grounding pole installed along the circumference of the pole is different from that of the grounding lead connecting at least one grounding pole.

1 is a conceptual view showing a state in which a conventional electric pole earth pole is installed.
2 is a flowchart showing a procedure of a method of constructing a ground pole of a pole according to an embodiment of the present invention.
Figs. 3A to 3D are conceptual diagrams sequentially showing the method of constructing the earth pole of the pole of Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a flowchart showing a procedure of a method of constructing a ground pole of a pole according to an embodiment of the present invention. The same members as those in Fig. 1 are denoted by the same reference numerals.

Referring to FIG. 2, a grounding pole construction method (p) of a pole includes a plurality of grounding electrodes 110 installed at equal intervals along a circumference of a pole 100, and an identification symbol is assigned to each of the plurality of grounding poles 110 (Step a).

The grounding electrode 110 may be a copper-based metal rod, and the number of the grounding electrodes 110 is not limited. Hereinafter, for convenience of explanation, a description will be made with reference to a case where four perimeters of the pole 100 are divided into quadrants and four ground poles 110 are installed.

The scheme of assigning the identification symbol is not limited to the specific scheme, as long as the ground electrodes 110 can be distinguished from each other. For example, the grounding electrode 110 placed closest to the grounding wire outlet 102 is referred to as a first grounding electrode 112, and the second grounding electrode 114 is sequentially counterclockwise on the basis of the first grounding electrode 112 ), The third earth electrode 116, and the fourth earth electrode 118 (step S100).

Next, the ground lead wires of the electric pole grounding wire 104 and the earth electrodes 110 of the electric pole 100 are connected in series so as to correspond to each case derived according to permutation of the grounding poles 110 step).

Here, each case derived in accordance with the permutation of the ground electrodes 110 means the number of cases in which r out of the n ground electrodes 110 given with the above-mentioned identification symbol are drawn out in one line. Calculation of the number of the case is to be in accordance with the _{n P r = n! / (} Nr)!.

For example, when four grounding electrodes 110 are installed around the electric pole 100, the number of cases where the grounding electrode 110 is set as one line is 24 ( ₄ P ₄ ), and the number of the four grounding electrodes 110 The number of cases in which 3 lines are drawn and set as one line is 24 ( ₄ P ₃ ).

In the case of the first grounding electrode 112, the second grounding electrode 114, the third grounding electrode 116 and the fourth grounding electrode 118 in various cases derived from the permutation of the grounding electrodes 110, The third ground lead wire 116a and the fourth ground lead wire 118a are connected to the first ground lead wire 112a of the first earth electrode 112 and the second ground lead wire 114a, Are serially connected in order (S200).

Next, the ground resistance in each of the above cases is measured, and the ground resistance in each case is compared with each other. In this case, at least one ground electrode is provided in each case derived from the permutation of the ground electrodes 110, (Step c).

The ground resistance can be measured by a known method. For example, the ground resistance value (?) Can be measured by a hook-type ground resistance meter (not shown) (S300).

The grounding pole construction method p of the electric pole measures the individual grounding resistance of the earth electrodes 110 by connecting the grounding poles 110 and then connecting the grounding leads of the pole grounding line 104 and the grounding poles 110 respectively. (Step a1).

In this case, there is an effect that the individual grounding resistance of the grounding electrodes 110 can be compared with the grounding resistance of the grounding electrodes 110 when they are connected to each other (S110).

Next, the ground leads of the ground electrode 110 corresponding to both ends are connected to each other in the permutation corresponding to the case where the minimum ground electrode derived as described above is provided to exhibit the maximum ground effect (step d).

For example, when at least a grounding electrode is provided to exhibit the maximum grounding effect, the first grounding electrode 112, the third grounding electrode 116, the fourth grounding electrode 118, and the second grounding electrode 114, The first ground lead wire 112a of the first ground electrode 112 corresponding to one end and the second ground lead wire 114a of the second ground electrode 114 corresponding to the other end are mutually connected.

This is because connecting the ground leads of the ground electrode 110 corresponding to both extreme ends is in inverse proportion to the distance between the ground electrodes, so that it is advantageous to lower the ground resistance by maximizing the distance between the ground electrodes. (S400).

Test Example

Hereinafter, a test example according to a method (p) for constructing a ground pole of a pole according to an embodiment of the present invention will be described in detail.

Figs. 3A to 3D are conceptual diagrams showing the earth pole construction method (p) in Fig. 2 in order. Referring to FIGS. 3A to 3D, four ground electrodes 110 are installed on the periphery of the electric pole 100 in four quarters, and the earth electrodes 110 are given respective identification symbols.

Specifically, a grounding electrode disposed at a distance of 6 to 8 cm from the grounding wire outlet 102 of the electric pole 100 is defined as a first grounding electrode 112, and the installation position of the first grounding electrode 112 is set to be half And a ground electrode provided at a position rotated clockwise by 90 degrees is defined as a second earth electrode 114. [ Likewise, the ground electrode provided at the position where the second ground electrode 114 is rotated by 90 degrees counterclockwise is defined as the third ground electrode 116, and the installation position of the third ground electrode 116 is rotated by 90 degrees counterclockwise The fourth grounding electrode 118 is defined as the grounding electrode provided at the position.

Next, the individual grounding resistances of the grounding electrodes 110 were measured by connecting the grounding lead wires of the electric pole grounding wire 104 and the grounding poles 110, respectively. The measurement results are shown in Table 1 below.

Earth pole The first earth electrode The second earth electrode Third grounding pole Fourth earth electrode Ground Resistance (Ω) 423 136 75 80

Next, the ground lead wires of the electric pole grounding wire 104 and the earth electrodes 110 of the electric pole 100 are connected in series so as to correspond to each case derived according to the permutation of the grounding electrodes 110, The grounding resistance was measured.

In each case, the ground leads of the ground electrode 110 corresponding to both extremes were interconnected and the ground resistance was measured again. Of these, five cases in which the ground resistance is low are summarized in Table 2 below.

In Table 2, the first earth electrode 112 is indicated by (1), the second earth electrode (114) is represented by (2), the third earth electrode (116) is represented by (3), and the fourth earth electrode (118) is represented by (4). For example, (1) + (2) + (3) + (4) denotes a case where the first earth electrode 112, the second earth electrode 114, the third earth electrode 116 and the fourth earth electrode 118 are fired in this order.

Connection method
Connection Example 1 Connection Example 2 Connection Example 3 Connection Example 4 Connection Example 5 ① + ② + ③ + ④ ① + ② + ③ ① + ② + ③ + ① ① + ③ + ② ① + ③ + ② + ① Ground Resistance (Ω) 79 130 88 72 47

As can be seen from Table 2, the electrostatic grounding line 104 from the grounding wire outlet 102 is connected to the first grounding lead 112a of the first earth electrode 112, and the first leading grounding wire 112a is connected to the electric pole 100 are rotated clockwise 180 degrees to be spaced apart and connected to the third ground lead 116a of the third ground electrode 116 and the third ground lead 116a is connected to the center of the pole 100 The grounding resistance is 72 Ω when the second grounding lead 114a is connected to the second grounding lead 114a of the second grounding electrode 114 by rotating and rotating 90 degrees in the clockwise direction.

This is because compared to the case where the four earth electrodes were rotated and rotated 90 degrees counterclockwise (connection example 1) or when three ground electrodes were rotated 90 degrees counterclockwise (connection examples 2 and 3) Corresponds to a low value.

In this case, the second ground lead 114a of the second ground electrode 114 is installed in the clockwise direction with respect to the center of the electric pole 100 and connected to the first ground lead wire 112a of the first ground electrode 112 It can be seen that when the ground leads of the earth electrode corresponding to both extreme ends are interconnected (Connection Example 5), the ground resistance is further reduced to 47Ω.

As described above, in the embodiments of the present invention, a plurality of grounding electrodes are provided along the circumference of the electric pole, so that the grounding pole can be constructed avoiding the buried groundmass. Further, by providing a ground electrode around the electric pole to greatly narrow the construction area, it is possible to construct the ground electrode more quickly and with a reduced cost. The grounding efficiency of the pole can be maximized by deriving the case in which the grounding effect of the grounding pole installed along the circumference of the pole is different from that of the grounding lead connecting at least one grounding pole.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, many modifications and changes may be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

G: Ground 100: Electric pole
101: Ground wire inlet port 102: Ground wire outlet port
104: ground wire 108: grounding sleeve
110: earth electrode 112: first earth electrode
112a: first ground lead wire 114: second ground electrode
114a: second ground lead wire 116: third ground electrode
116a: second ground lead wire 118: fourth earth electrode
118a: fourth ground lead wire

Claims (5)

A step of attaching a plurality of grounding electrodes at equal intervals along the circumference of the electric pole, and assigning an identification symbol to each of the grounding electrodes;
A step b) of series-connecting the grounding lead of the pole and the grounding lead of the earth electrodes so as to correspond to each case derived according to the permutation of the earth electrodes;
Measuring and comparing the grounding resistance in each of the above cases to derive a case where the grounding effect is maximized by providing at least grounding poles in each case derived from the permutation of the grounding poles; And
And d) connecting the ground leads of the earth electrodes corresponding to both extremes of the permutation corresponding to the case where the minimum earth electrodes are provided to exhibit the maximum ground effect.
The method according to claim 1,
After the step a,
Further comprising a1 step of measuring the individual grounding resistance of the earth electrodes by connecting the pole ground wire of the pole and the ground lead of the earth poles, respectively.
delete A first step of installing a first earth electrode so as to be spaced apart by 6 to 8 cm from the ground wire outlet of the electric pole;
A second step of installing a second earth electrode at a position rotated 90 degrees counterclockwise at the first earth electrode installation position with respect to the center of the electric pole;
A third step of installing a third earth electrode at a position rotated 90 degrees counterclockwise at the second earth electrode installation position with respect to the center of the electric pole;
Connecting the first ground lead wire of the first earth electrode to the first ground lead wire of the third earth electrode and connecting the first ground lead wire of the third earth electrode to the third ground lead wire of the third earth electrode, Step 4; And
And connecting the third ground lead wire to the second ground lead line of the second earth electrode in a clockwise direction with respect to the center of the electric pole.
5. The method of claim 4,
After the fifth step,
And connecting the second ground lead of the second earth electrode to the first ground lead of the first earth electrode in a clockwise direction with respect to the center of the electric pole.

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