KR20030044569A - Method of construction for grounding a distribution line - Google Patents

Abstract

PURPOSE: A power line grounding method is provided to minimize the quantity of excavation of an excavated portion where a grounding pole is buried and effectively perform grounding works. CONSTITUTION: The intrinsic resistance of the ground where a power line is grounded is measured using a ground intrinsic resistance measurement instrument(S12). The measured value is analyzed using a computer program to select a point and method having excellent grounding effect(S13). A hole in which a grounding pole is buried is formed at the selected point using a punching tool and the grounding pole is struck into the hole using the selected grounding method(S15). A telegraph pole having an earthing line for connecting the grounding pole with the power line is erected(S20).

Description

Distribution Method Grounding Method {Method of construction for grounding a distribution line}

The present invention relates to a distribution line grounding method (grounding method at the time of new construction of the distribution line and ground repair work), in particular to minimize the excavation area during the grounding work to reduce the construction cost, equipment developed to rely on manpower It is related with the distribution line grounding method which is efficient by using and grounding materials and enables scientific construction of grounding work through analysis by measuring equipment.

In general, in order to supply electric power that has undergone several stages of transformation in a substation to consumers such as homes or buildings, overhead distribution lines supported by poles installed at regular intervals on the ground are used.

Such a distribution line is electrically connected to the ground to protect the power distribution equipment from abnormal currents (brain, ground fault, surge) and to prevent various electrical disasters caused by a short circuit.

1 is a view showing a grounding method in the construction of the distribution line of the prior art, Figure 2 is a flow chart of the distribution line grounding method of FIG.

First, the ground wire 3 is inserted into the electric pole 1 to be embedded in the ground E. FIG. Then, after connecting the ground wire (3) with the distribution line, the excavation pit (5) for embedding the lower end of the jeonju (1) is excavated with equipment or manpower, and then the jeonju (1) is erected in the jeonju pit (5). And part of the soil excavated in the process of excavating the Jeonju pit (5) to fill the Jeonju pit (5) again so that Jeonju (1) does not fall. [See FIG. 1 (A)]

Next, after excavating the ground rod pit (9) for embedding the ground rod (7) in the ground (E) using a tool such as a shovel to reach a width of 0.5m and a depth of 0.75m or more from one side of the pole (1) Type a ground rod (7) into a ground rod pit (9) at least 0.5m away from (1), using a hammer, etc., and type 0.75m or more in depth, then connect the ground wire (3) and the ground rod (7).

At this time, excavating the ground (E) to reach 0.5m in width and 0.75m or more in the pole (1), ground rod (7) ground rod pit spaced 0.5m or more from the pole (1), 0.75m or more from the ground surface In order to type the ground rod (7) in (9) and to ensure the minimum working space required for excavating the ground rod pit (9) to a depth of 0.75m or more by using a shovel or the like. [See FIG. 1 (B)]

Next, measure the grounding resistance of the grounding rod (7) with a grounding resistance meter, and if the measured value does not meet the prescribed value, additionally ground the grounding rod (7). After further excavating the ground rod pit (9) to the ground, add the ground rod (7) to the ground rod pit (9) 2 m or more away from the already installed ground rod (7) using a hammer, etc. Connect 3) and ground rod (7).

Here, the ground rod 7 is continuously buried in the ground rod pit 9 at least 2 m away from the already-typed ground rod 7 as described above until the ground resistance reaches a prescribed value. [See FIG. 1 (C)]

Next, when the grounding resistance of the grounding rod 7 measured in the above state reaches the prescribed value, the work is completed by filling up the soil excavated in the excavation process in the electric pole pit 5 and the grounding rod pit 9 and arranging the work site. . [See FIG. 1 (D)]

On the other hand, since the grounding wire or grounding rod embedded in the ground by the distribution line grounding method is usually made of copper, the contact resistance increases due to corrosion caused by moisture contained in the ground after a certain period of time. In order to restore this, the ground line renovation work is performed.

FIG. 3 is a view illustrating a grounding method in the ground repair work of the distribution line of the prior art, and FIG. 4 is a flowchart illustrating the distribution line grounding method of FIG. 3.

First, by measuring the ground resistance, excavating the ground (E) of the circumference of the electric pole (1) determined to be the ground repair work with a shovel or the like to find the ground wire (3) buried in connection with the existing ground rod (7).

At this time, if the ground wire 3 is corroded and its function is lost, it is replaced with a new ground wire, and when it is in good condition, it is reused. [See FIG. 2 (A)]

Next, excavate the ground rod pit (9) in which the new ground rod (7 ') will be buried using a shovel or the like to reach a depth of 0.5m and a depth of 0.75m or more from the pole (1), and then place it 0.5m away from the pole (1). The ground rod 7 'is typed using a hammer or the like. The ground wire 3 is connected to the ground rod 7 '. [See FIG. 2 (B)]

If the ground resistance is less than the specified value by measuring the ground resistance with the next ground resistance meter, the ground rod (7 ') already buried as shown in Fig. 1 (C) of the grounding method during the construction of the distribution line until the ground resistance reaches the specified value. After further excavating the ground rod pit (9) to a distance of 2 m or more and a depth of 0.75 m or more, use a hammer or the like for the ground rod (7 ') to the ground rod pit (9) 2 m or more away from the already installed ground rod (7'). Continue to add more than 0.75m depth, then connect the ground wire (3) and ground rod (7 '). [See FIG. 2 (C)]

Next, when the ground resistance of the ground rod 7 'measured in the above state reaches the prescribed value, the soil excavated in the excavation process is filled again in the periphery of the excavated pole 11 and the ground rod pit 9 and the work site is arranged. This completes the work. [See FIG. 2 (D)]

However, as the ground rod is buried deeply in the ground, it is possible to easily reach the prescribed ground resistance. In the above-described conventional technique, a person can not bury the ground rod more than 2m deep from the surface of the ground by using a hammer or the like. In order to reach the specified value by additionally embedding in parallel at least 2m away from the grounding rod, there is the inconvenience of digging up existing roads and sidewalk blocks in order to excavate the grounding rod pit where the grounding rod is additionally buried. As a result, the excavation and recovery costs are excessively consumed and the construction period is long.

In addition, although two ground rods are additionally embedded in FIG. 1 or FIG. 3, this is only one example.

Therefore, the ground rods must be continuously buried until the specified ground resistance is reached. Therefore, the ground rods are not limited to a certain number. It is not easy to secure a space to bury the ground rod, and even if the ground space is secured, it is not easy to excavate the ground rod pit where the ground rod will be additionally buried due to underground buried material (gas pipe, water pipe, communication cable, power cable, etc.). There is this.

In addition, since the earthing rods are buried in any position so that only the gap between them is maintained when the earthing rods are to be grounded, the grounding rods are inefficiently generated when the grounding resistance is not reached. Not only do they have to bury them additionally, but they also cause problems.

In addition, when ground rods are typed as hammers on the ground, underground burials (gas pipes, water pipes, communication cables, power cables, etc.) that are buried underground are usually damaged. There is a problem that occurs.

The present invention has been made to solve the above-mentioned problems of the prior art, by minimizing the amount of excavation of the excavated portion to bury the ground rod, thereby significantly reducing the excavation cost and recovery costs, and the developed equipment and grounding materials In addition, the main purpose is to provide a grounding method for the distribution line so that the grounding work can be effectively carried out with the aid of measuring equipment.

In addition, another object of the present invention is to provide a distribution line grounding method that can be prevented from being damaged by the ground rod by detecting other underground buried (gas pipe, water pipe, communication cable, power cable, etc.) buried in the ground in advance.

1 is a view showing the grounding method in the construction of the distribution line of the prior art,

2 is a flowchart in which the distribution line grounding method of FIG. 1 is expressed;

FIG. 5 is a view illustrating a grounding method in a ground repair work of a distribution line of a prior art; FIG.

4 is a flowchart in which the distribution line grounding method of FIG. 3 is expressed;

5a to 5d is a view showing the grounding method when constructing a distribution line of the present invention,

6 is a flowchart in which the distribution line grounding method of FIG. 5 is expressed;

Figure 7a is a side view showing a drilling device in accordance with the present invention,

Figure 7b is a perspective view showing a coupling state of the support, the embedding jig and the grounding rod according to the present invention,

Figure 7c is a side view showing the striking device according to the present invention,

7d is a perspective view showing a ground electrode according to the present invention;

Figure 7e is an exploded perspective view showing a grounding apparatus according to the present invention,

8a to 8c is a view showing the grounding method in the ground repair work distribution line of the present invention,

9 is a flowchart in which the distribution line grounding method of FIG. 8 is expressed.

<Explanation of symbols on main parts of the drawings>

E: Earth 11: Electric pole 13: Ground wire

15: electric pole pit 17: ground rod 19: buried hole

20: high oil resistance measuring instrument 30: punching device

40: support 45: buried jig 50: hitting device

60: earthing electrode 70: earth resistance reducing agent molding

75: well done

In the construction of the distribution line for achieving the above technical problem, the grounding work includes the first step of measuring the earth resistance of the earth on which the grounding construction of the distribution line is to be carried out using a resistance tester for the earth, and the measurement of the first step. Analyzing the calculated values by a computer program, and adopting the position and grounding method having excellent grounding effect, and drilling and embedding the hole for embedding the ground rod in the position adopted in the second stage with a punching device. And a fourth step of establishing a ground rod with a striking device in the buried hole, and a fourth step of erecting a pole installed with a ground wire for connecting the embedded ground rod and the distribution line of the third step. It is done.

Here, the distribution line grounding method detects the presence of underground buried material (gas pipe, water pipe, communication cable, power cable, etc.) before the ground rod is typed.

On the other hand, the grounding work in the distribution line ground repair work to achieve the above technical problem, the first step of determining whether or not to replace the ground line by grasping the circumference around the pole to be carried out the distribution line ground repair work; The second step of measuring earth resistance of the ground where the distribution line ground repair work is to be carried out, and the measured value of the second step is analyzed by computer program, and the grounding method and location with excellent grounding effect in the deep drilling method and the parallel method A third step of adopting a hole and a boring device for embedding the ground rod at the position adopted in the third step with a punching device and a type of the grounding rod as a striking device in the embedding hole according to the adopted grounding method. And a fifth step of constructing a pole installed with a ground line for connecting the embedded ground rod and the distribution line of the fourth step. Shall be.

Hereinafter, the power distribution line grounding method of the present invention will be described in detail with reference to the accompanying drawings divided into a grounding method at the time of new construction of the distribution line and a grounding method at the ground repair work of the distribution line.

1. Grounding method for new construction of distribution line

5A to 5D are diagrams illustrating a grounding method when constructing a distribution line of the present invention, and FIG. 6 is a flowchart illustrating a distribution line grounding method of FIG. 5.

In the construction of the distribution line of the present invention, the grounding method first inserts the grounding wire 13 into the pole 11 to be embedded in the ground E before performing the first step (FIG. 5A), and then grounding the grounding wire 13. Connect with distribution line [See S11]

Here, the method of inserting the ground wire 13 is inserted into the inlet and the outlet by inserting a rescue line longer than the interval between the inlet (not shown) formed in the upper side of the electric pole 11 and the outlet 11a formed in the lower side through the inlet ( 11a) is passed through the conduit and then pulled out through the outlet 11a so that both ends of the rescue line are exposed to the outside. And it is completed by connecting the ground line 13 to the end of the rescue line exposed through the outlet (11a) and pulling the end of the rescue line exposed through the inlet to place the ground line 13 on the pipeline of the electric pole (11).

Next, the first step (FIG. 5A) is a step of measuring the resistance to the resistance using the resistance to high resistance (20), a measurement method using the resistance to the resistance of the high resistance 20 is a conventional four-point potential measurement method (4 A point fall of potential test or a four point wenner method is used. [See S12]

This measuring method is a method of measuring by sending four probes 21 to the ground (E) through the probe 21 by driving the low-frequency current in the high resistance measuring instrument 20 at regular intervals in a straight line.

Next, the second step (FIG. 5B) is a step of adopting a position and grounding method having excellent grounding effect by analyzing the measured value measured in the first step (FIG. 5A). [See S13]

The method of analyzing the measured values is an analytical method that estimates the soil model by comparing experimental curves based on the experiences gained through the practice of multiple measurements and interpretations, and curves obtained from measurement results based on theoretically calculated master curves. There is a method and a method by a computer program using a computer program. In the present invention, an analysis method by a computer program, which is commercially available in the field of high oil resistance analysis and which has considerable advantages in terms of cost and time, is used. .

On the other hand, Table 1 below is an example showing the analysis results according to the high oil resistance measured in the first step (Fig. 5a), looking at this table and adopting the most appropriate grounding method is as follows.

Referring to Table 1, the earth co-resistance of 0.75 m or more from the ground surface was 57.5 Ω-m, and the high oil resistance of 0.75 m or less was 94.8 Ω-m. Therefore, the grounding effect of ground rods in this area is better because the deeper the grounding effect is, the deeper the grounding point is.

On the contrary, assuming that the earth resistance is less than 0.75m in Table 1, the earthing resistance is less than 0.75m, that is, the ground side has better grounding effect. In parallel, it is preferable to adopt a parallel method to type the ground rod.

Next, the underground buried material (gas pipe, water pipe, communication cable, power cable, etc.) already buried in the ground (E) before the ground rod 17 is buried by the method adopted in the second step (FIG. 5B). In order to prevent damage by contacting the ground rod (E) of the type to detect the presence of underground buried material using a known underground buried detector. [See S14]

And using the equipment and the like to excavate the pole pit (15) for erecting the pole (11). [See S15]

Here, the pole pit 15 is preferably excavated to a depth that can be embedded in the lower portion corresponding to about 1/6 of the entire length of the pole 11.

Next, the third step (FIG. 5C) is a step of typing the ground rod 17 according to the embedding position and method adopted in the second step (FIG. 5B).

First, the method of embedding the ground rod 17 when the deep drilling method is adopted in the second step (FIG. 5B) is to embed the ground rod 17 at the bottom of the pole pit 15 as shown in (A) of FIG. 5C. Drills the buried holes 19 for the drilling device 30 and then supports the ground rods 17 so as not to flow by using the support 40 in the buried holes 19, and the ground rods 17 as the striking device 50. In this case, in order to prevent damage such as bending of the ground rod 17 by the striking force of the striking device 50, the buried jig 45 is coupled to the upper end of the ground rod 17, and thus the striking device 50 ) Exerts a striking force on the embedding jig 45, and the striking force is transmitted to the ground rod 17 to type the ground rod 17.

Here, the ground rod 17 is embedded while being coupled with a plurality of connecting ground rods 17 'in the longitudinal direction until reaching a depth capable of reaching a prescribed ground resistance. [See S16]

Meanwhile, the grounding equipment and grounding materials related to the distribution line grounding method of the present invention will be described below.

FIG. 7A shows a drilling device 30 manufactured by the present applicant, in which a screw 31 having a diameter of approximately 15 cm is provided for drilling the embedding hole 19, and the screw 31 is a crane. It is connected to (32) is operated up, down, left and right with the crane (32). And the drilling device 30 is installed in the loading box 34 of the vehicle 33 for easy mobility.

FIG. 7B is a perspective view illustrating a coupling state of the support, the embedding jig, and the grounding rod manufactured by the applicant, wherein the support 40 is inserted into the lower portion of the buried hole 19 so as not to flow. ) Is formed, and the support hole portion 42 is inserted into the upper side so that the embedding jig 45 coupled with the ground rod 17 does not flow.

Therefore, first, the cylindrical portion 41 of the support 40 is inserted into the embedding hole 19. The coupling between the ground rod 17 and the embedding jig 45 is inserted into the support hole 42 of the support 40 so that the upper side of the embedding jig 45 is exposed to the outside. . At this time, the ground rod 17 does not flow by the striking force of the striking device 50.

Here, the ground rod 17 is a stainless steel ground rod (utility model registration No. 212545) created by the applicant to prevent corrosion by moisture or the like contained in the ground (E).

And the embedding jig 45 is filed by the present applicant on April 20, 2001 and is currently in the state of technical evaluation maintenance decision (Utility Model Registration No. 238821).

FIG. 7C is a side view showing the striking device 50 filed by the present applicant on November 9, 2001 (Utility Model Application No. 34444), which is a frame 51 supported on the earth E, and the frame The hydraulic cylinder 52 moving along the longitudinal direction of the 51 and the embedding jig 45 installed at the end of the piston 52a of the hydraulic cylinder 52 and coupled to the upper end of the ground rod 17 It consists of a ram 53 that types the ground rod 17.

The striking device 50 is connected to the crane 54 is moved up, down, left and right with the crane 54, the crane 54 is installed in the stacking box 56 of the vehicle 55 for easy mobility.

Next, when the parallel method is adopted in the second step (FIG. 5B), the method of embedding the ground rod 17 includes a plurality of buried holes located at a predetermined distance from the pole pit 15 as shown in FIG. 5C (B). 19 is drilled using the punching device 30, and the ground rod 17 is typed in each of the embedding holes 19 using the striking device 50.

At this time, the distance between the ground rods 17 is close to the pole 11, the ground rod 17 is more than 0.5m away from the pole 11, the rest is buried 2m or more away from each other. [See S17]

And the number of embedding of the ground rod 17 is already determined in the second step (Fig. 3b) as shown in Table 1. For example, as shown in Table 1, the number of grounding rods 17 is buried if the required ground resistance is 10 Ω or less, 6 for 25 Ω or less, and 1 for 100 Ω or less.

The parallel method as described above uses the support 40 and the embedding jig 45 as well as the ground rod 17 when the ground rod 17 is typed as the striking device 50 as in the above-described deep punching method. Use steel ground rods.

Meanwhile, in the parallel method, instead of the ground rod 17, a ground electrode 60 capable of significantly reducing the ground resistance may be used. The ground electrode 60 is inserted into the buried hole 19 drilled to a depth capable of reaching the ground resistance defined by the punching device 30, and then installation is completed by refilling the soil excavated during the excavation process.

Here, the ground electrode 60 is filed by the present applicant on September 27, 2001 (Utility Model Application No. 29776), and as shown in FIG. 7D, a grounding resistance reducer is used to significantly lower the grounding resistance. 61 is formed, and the ground resistance reducing agent 61 is formed with a plurality of grooves 62 recessed in the longitudinal direction to increase the contact area with the earth E. As shown in FIG.

Next, although not illustrated in Table 1 of the second step (FIG. 5B), there is a case in which the earth resistance reducing agent molding 70 is embedded in the electric pole pit 15 instead of the ground rod 17. The method of embedding the earth resistance reducing agent molded article 70 is a method adopted when it is analyzed in the second step (FIG. 5B) that the grounding effect on the electric pole pit 15 is excellent.

Here, referring to FIG. 7E, the grounding resistance reduction molding 70 will be described. The grounding resistance reduction molding 70 is formed in a cylindrical shape having a short height and a plurality of grounding rods 71 are exposed at the lower ends thereof. ) Are buried at regular intervals. The lead wire 72 is embedded at one side of the circumference.

As shown in (C) of FIG. 5C, the method of embedding the ground resistance reducing agent molding 70 further excavates a predetermined depth from the electric pole pit 15 by the exposed length of the ground rod 71. Leave it as it is without digging out. When the earth resistance reducing agent molding 70 is placed on the soil softened by excavation and not excavated, and the pressure is applied, the ground rod 71 penetrates and is embedded in the earth resistance reducing agent molding 70 in this state. Cover the soil with a thickness of about 10cm. [See S18]

Next, as described above, the ground resistance of the embedded ground rod 17 is measured by any one of the methods of embedding the deep drilling method, the parallel method, and the ground resistance reducing agent molding 70 in the third step (FIG. 5C). Check if the ground resistance is reached. [See S19]

At this time, the measurement of the ground resistance is carried out in the verification procedure, and the ground resistance measured in the second step (FIG. 5b) was analyzed by a computer program and grounding was performed according to the adopted method. Must be reached.

Next, the fourth step (FIG. 5D) is a step of connecting the grounding rod 17 and the ground resistance reducing molded article 70 embedded in the third step (FIG. 5C) with the power distribution line. 5B is a view illustrating a connection state between the ground rod 17 embedded in the ground line 13 and the ground line 13, and FIG. 5D illustrates a connection state of the ground rod 17 embedded in the ground line 13 and the ground line 13. FIG. 5C is a view showing a connection state of the ground resistance reducing agent molding 70 and the ground wire 13 embedded by the method of embedding the ground resistance reducing agent molding 70.

In the fourth step (FIG. 5D), first, the electric pole 11 is built in the electric pole pit 15, and the soil which was dug in the process of excavating the electric pole pit 15 is filled in the electric pole pit 5 again. Do not fall. [See S20]

At this time, the insulator box 75 shown in FIG. 7E is covered with the lower end of the pole 11. Here, the insulator box 75 forms a grounding device together with the earth resistance reducing agent molding 70.

For reference, the grounding device is in a state filed by the present applicant on October 18, 2001 (Utility Model Application No. 3315).

Next, the exposed ground wire 13 and the ground rod 17 are connected through the outlet 11a of the electric pole 11. [See S21]

At this time, when the ground resistance reducing molding 70 is buried in the third step (FIG. 5C), the lead wire 72 and the ground wire 13 of the ground resistance reducing molding 70 are as shown in FIG. 5D. This is connected.

Since the distribution line is electrically connected to the earth E in the above state, when an abnormal current occurs, it is quickly discharged to the earth E to protect the power distribution equipment and to prevent human injury due to various electrical disasters. do.

All the work of the grounding method is completed during the construction of the distribution line by refilling the burial hole (9) with the soil excavated in the next excavation process. [See S22]

On the other hand, ground rods or ground wires embedded in the ground by the distribution line grounding method are corroded by moisture contained in the ground after a certain period of time, and this corrosion causes the contact resistance with the ground to increase, increasing the ground resistance. In this case, the electric power company periodically measures the ground resistance and performs repair work if it exceeds the specified value.

2. Grounding method for ground repair work of distribution line

8A to 8C are diagrams illustrating a grounding method in repairing the distribution line grounding of the present invention, and FIG. 9 is a flowchart illustrating the distribution line grounding method of FIG. 8.

First step (Fig. 8a) is to measure the ground resistance and excavate the ground (E) of the circumference of the electric pole 11 determined to be the ground repair work with a shovel or the like and connected to the existing ground rod (17 ") This step is to find the ground line (13).

At this time, if the ground wire 13 is corroded and its function is lost, the ground wire 13 is replaced with a new ground wire, and when it is in good condition, it is reused.

Next step (see Fig. 5a) is to measure the earth resistance of the earth where the work of the first step (Fig. 8a) is completed, and step 3 (see Fig. 5b) is to measure the measured value of the second step. Analysis by a computer program is a step of adopting the grounding method and location excellent in the grounding effect of the deep drilling method and the parallel method, the same as the grounding method in the construction of the distribution line, and the related drawings and detailed description thereof will be omitted.

Before performing the fourth step (FIG. 8B), the underground buried detector is used to detect the presence of underground buried materials (gas pipes, water pipes, communication cables, power cables, etc.) to prevent damage to the underground buried materials by the type of ground rod 17. .

Next, the fourth step (FIG. 8B) drills the embedding hole 19 for embedding the ground rod 17 in the embedding position adopted in the third step with the drilling device 30, and the embedding hole according to the embedding method. In step 19, the grounding rod 17 is typed by the striking device 50. FIG. 8B shows the core drilling method, and FIG. 8B shows the parallel construction method.

Here, the seam construction method of the construction method for the distribution line grounding work is the same as the seam construction method of the grounding method for the construction of the distribution line, but unlike the type of the ground rod (17) in the jeonju pit (15), Jeonju (11) Only the matter of type the grounding rod 17 at regular intervals in one direction. In addition, in the construction method of the distribution line ground repair work, the method of embedding the ground resistance reducing agent molding 70 is also not implemented.

As described above, when embedding of the ground rod 17 is completed by the deep percussion method or the parallel method, the ground resistance in the confirmation procedure is measured. Of course, if the ground rod 17 is buried according to the grounding method selected and analyzed in the third step, the grounding resistance reaches the prescribed grounding resistance.

Next, the fifth step (Fig. 8c) is a step of establishing a pole 11, the ground wire 13 is installed for connecting the embedded ground rod 17 and the distribution line in the fourth step, the (a) of FIG. The method is shown, and FIG. 8C (B) shows the parallel method.

As described above, the fifth step (Fig. 8c) is also the same as the grounding method and other matters in the construction of the distribution line, except that the process of installing the insulator box 75 at the bottom of the electric pole 11 is omitted.

By arranging the next work site, all work of the grounding method is completed in the ground repair work of distribution line.

Preferred embodiments of the present invention described above are disclosed by way of example and those skilled in the art will be able to make various modifications, changes, additions, etc. within the spirit and scope of the present invention.

In addition, the above-described stainless steel ground rod (utility model registration No. 212545), buried jig (utility model registration No. 238821), striking device (utility model application No. 334444), grounding electrode (utility model application No. 29776) and the grounding device (Utility Model Application No. 3315) are to be found that the applicant has been filed in advance to achieve the object of the distribution line grounding method according to the present invention.

In the distribution line grounding method according to the present invention configured as described above, since the ground rod is grounded in the ground by the striking device, the ground rod can be buried deeper (2 m or more) than when the ground rod is typed by the manpower of the prior art. There is an advantage that can be easily reached.

In addition, after drilling a buried hole having a diameter of 15 cm by a punching device, a ground rod is used as a hitting device in the buried hole, so as in the prior art, an existing pavement or sidewalk block, etc., is used to excavate a portion to bury the ground rod. The hassle of having to dig one by one is eliminated, and thus, the excavation and recovery cost is advantageously reduced by about 40 to 50% compared to the prior art.

Because of the above reasons, it is easy to secure a space for additional laying of ground rods when the ground rods are installed by the parallel method, so it is possible to easily secure a traffic space for residents even in urban areas, residential areas, and areas with various facilities. There is an advantage that the inconvenience of the residents is minimized.

In addition, when the grounding work is carried out, the earth resistance is measured and analyzed first, and then the grounding rod is buried. Therefore, the grounding resistance can be reached more efficiently, which has the advantage of scientifically constructing the grounding work.

In addition, there is an advantage in that it is possible to prevent the underground buried damage by the pointed end of the ground rod because the ground rod is embedded after the detection of the presence of underground buried ground in the ground before the ground rod is buried.

Claims (6)

A first step of measuring earth resistance of the earth where the grounding construction of the distribution line is to be carried out using a resistance of the earth resistance; A second step of analyzing the measured value of the first step by a computer program and adopting a location and grounding method having excellent grounding effect; A third step of drilling a buried hole for embedding the ground rod in the position adopted in the second step with a punching device, and forming a ground rod with the striking device in the buried hole according to the grounding method adopted; And a fourth step of establishing a pole installed with a ground line for connecting the embedded ground rod and the distribution line of the third step. The method of claim 1, The distribution line grounding method is a distribution line grounding method, characterized in that the detection of the presence of underground buried before performing the third step. The method of claim 1, In the third step, it is analyzed that the grounding effect is excellent toward the underground side in the second step. When the deep drilling method is adopted, the buried holes are drilled at the bottom of the excavated pit to erect the electric pole, and a plurality of ground rods are defined in the buried hole. A distribution line grounding method, characterized in that it is connected in the longitudinal direction until the ground resistance is reached. The method of claim 1, In the third step, it is analyzed that the grounding effect is better toward the ground side in the second step, and when the parallel method is adopted, the buried holes are drilled at regular intervals in the electric pole pit, the ground rod is typed in the buried holes, and then the ground resistance is measured. Distribution grounding method characterized in that additional ground rods are added at regular intervals from the typed ground rod until the grounding resistance is reached if the ground resistance is not specified. The method of claim 1, The third step is a distribution line grounding method characterized in that the buried ground resistance-reduced moldings in the electric pole pit when the analysis in the second step is excellent in the grounding effect of the electric pole pit. A first step of determining whether or not the grounding line is replaced by determining a state of the grounding line found by excavating a circumference around the pole where the distribution line grounding repair is to be performed; A second step of measuring earth resistance of the ground on which the grounding work of the distribution line is to be performed; A third step of analyzing a measured value of the second step by a computer program and adopting a grounding method and a position excellent in grounding effect among the deep perforation method and the parallel method; A fourth step of drilling a buried hole for embedding the ground rod in the position adopted in the third step with a punching device, and forming a ground rod with the striking device in the buried hole according to the grounding method adopted; And a fifth step of establishing a pole installed with a ground line for connecting the embedded ground rod and the distribution line of the fourth step.