KR101499420B1 - Temporary power supply through indirect methods for live - Google Patents

Abstract

The present invention relates to a temporary power supply method through an indirect live line work method in the breakdown of a transformer. The purpose of the present invention is to prevent an accident of a worker by safely connecting a high voltage line to a temporary transformer by constructing a primary side of a cutout switch to connect the high voltage line to a defective pole transformer and a primary side of a temporary cutout switch which is connected to a high voltage cable connected to the temporary transformer with an indirect live line work method through a jumper cable and a live line clamper. The temporary power supply method through the indirect live line work method in the breakdown of the transformer according to the present invention rapidly supplies power to a power user by reducing working time. The present invention uses a temporary small transformer instead of a large transformer device by using the temporary cutout switch instead of a protection fuse function embedded in the transformer and a high voltage switch.

Description

{Temporary power supply through indirect methods for live}

The present invention relates to a temporary power supply method using an indirect live wire method in the event of a transformer failure, and more particularly, to a method of supplying a temporary power supply by connecting a primary side of a cut-out switch connecting a fault- The temporary connection of the primary cut-out switch is performed through the jumper cable and the live wire clamp, so that the process of electrically connecting the high voltage cable to the temporary transformer is safe, thereby preventing worker safety accidents, As the conventional uninterruptible power transformer method, it is not necessary to reload the high-voltage wire and to restore it, so that the operation is simple and convenient, and the working time required is reduced, so that the power supply can be supplied to the power user quickly. To a temporary power supply method.

In general, when the poultry transformer is required to be replaced or repaired due to the failure of the poultry transformer, the poultry transformer is replaced or repaired through two methods.

First, the pole transformer is safely replaced or repaired in the state where the electrical connection between the high voltage and low voltage wires connected to the pancake transformer failed by the electrostatic method is cut off.

However, the above-described electrostatic method has a disadvantage in that the power user can not use the power during the period of repairing and replacing the pillar transformer, which is very inconvenient for a power user.

Second, the uninterruptible power transformer system solves the problems of the above-mentioned electrostatic method. A high-voltage switch, a transformer device, a protective fuse embedded in the transformer, a measuring device, and a low-voltage switch are electrically connected between a high-voltage wire and a low- The high-voltage switch and the low-voltage switch are connected to the low-voltage switch, and the high-voltage switch and the low-voltage switch are connected in parallel with the failed pneumatic transformer. Then, the high-voltage switch and the low-voltage switch connected to the failed p- This lancet transformer is replaced and repaired.

Here, power can be supplied to the power user through the transformer device instead of the pillar transformer, so that the pillar transformer can be replaced and repaired without power failure.

However, since the transformer system for uninterruptible power uses a direct live wire method in which the outer shell of the high-voltage cable is electrically connected to the high-voltage switch and the high-voltage cable is electrically connected to the high-voltage cable, There is a problem that the risk of safety accidents is high because the worker has to contact the high-voltage electric wire all the time.

In addition, the operation of applying the high-voltage electric wire to the jacket and restoring the backward portion of the high-tensioned wire to the original position requires a lot of working time, which slows down the construction and exposes the operator to the risk of safety accidents by the long working time.

Further, in order to perform the uninterruptible transformer method, it is required to use many facilities such as a high-voltage switch, a transformer device, a protective fuse incorporated in a transformer, a measuring device, a low-voltage switch, And there is a problem in that a large number of electric power users can not receive power for a long time because it is difficult to smoothly enter a large vehicle in a narrow road.

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve all of the above problems, and it is an object of the present invention to provide a temporary cut-off transformer which is connected to a primary side of a cut- Out switch with the jumper cable and live wire clamp, the process of electrically connecting the high-tension wire to the temporary transformer is safe, thereby preventing worker safety accidents, As the construction transformer method, it does not need to restoration of the high voltage cable, and it is not necessary to restore it again, so that the operation is simple and convenient, and the working time required is reduced, so that the transformer capable of supplying power to the power user can be supplied quickly. Power supply method.

In addition, by using a temporary cut-out switch in place of the protective fuse function built into the high-voltage switch and transformer, a small-sized temporary transformer can be used instead of a large-sized transformer device, It is possible to secure the mobility quickly and it is also possible to easily enter the small low-pressure maintenance vehicle in a narrow way, thereby inducing the construction to be carried out quickly. In the event of a failure of the transformer, provision of temporary power through indirect live- .

According to an aspect of the present invention, there is provided a temporary power supply method using an indirect live-wire method in the event of a transformer failure, including a low-voltage cable connected to a low-voltage cable connected to a pendulous pneumatic transformer, A first step (S10) of connecting the high-voltage cable to be connected to the temporary transformer and opening the low-voltage switch of the temporary transformer, a cut-off switch (COS) formed on the high-voltage line connecting the fault- (S20) for separating and recovering a low-voltage line for electrically connecting a fault-generating pneumatic transformer and a low-voltage electric line after cutting off an electrical connection between a fault-generating pneumatic transformer and a high-voltage transformer by opening a cut-out switch, A third step (S30) of connecting a low-voltage cable connected to the temporary transformer to a low-voltage cable connected to a fault-occurring pneumatic transformer, (S40) of easily fixing and fastening the spindle provided with the temporary cut-out switch to the high-voltage electric wire while fixing the temporary cut-out switch in an open state; A fifth step (S50) of connecting a cable and connecting a jumper cable to be connected to a primary side of the cut-out switch formed on a high-voltage line connected to a high-voltage line on a primary side of the temporary cut- A sixth step (S60) of connecting a live wire clamp to the end of the jumper cable and connecting the live wire clamp to the primary side of the cut-out switch through the live wire rod so that the high voltage wire and the temporary transformer are electrically connected; , The temporary cut-out switch is pressed to electrically connect the high-voltage electric wire to the temporary transformer, and the low-voltage switch of the temporary transformer is pressed to connect the temporary transformer and the low- And a seventh step (S70) of electrically connecting the high-voltage electric wire to the low-voltage electric wire via the temporary transformer,

Failure occurs when a transformer fails. Instead of the pneumatic transformer, power can be temporarily supplied through the temporary transformer, so that power failure can be prevented during the time of replacing the transformer.

The spindle is protruded from the central portion of the temporary cut-out switch. The fastening protrusion is formed with a fastening hole, and a hook-shaped fastening ring is formed on the upper portion so as to be easily fixed to the high-voltage electric wire. And a lower rod formed at an upper portion thereof with a male protrusion penetrating the binding hole of the binding protrusion and being fastened to the female screw of the upper rod,

Wherein the upper and lower rods are fixed by fixing the position of the temporary cut-out switch connected to the coupling protrusion by firmly coupling the upper and lower rods, wherein the upper rods and the lower rods are made of light FRP (fiber reinforced plastics) .

In addition, the live wire clamp has a connection ring formed at one side thereof so as to be easily connected to the jumper cable, and a fixing groove is formed therein. A guide hole having a threaded portion formed therein is passed through the fixing groove, And the other end of the binding body can be easily rotated by the operator when the user pushes the movable bar to the left and right sides, And is formed in an annular ring shape.

As described above, according to the provisional power supply method using the indirect live-wire method in the event of failure of the transformer according to the present invention, the primary side of the cut-out switch for connecting the fault-occurring pneumatic transformer and the high-voltage cable to the high-voltage cable connected to the temporary transformer The temporary connection of the primary cut-out switch is performed through the jumper cable and the live wire clamp, so that the process of electrically connecting the high voltage cable to the temporary transformer is safe, thereby preventing worker safety accidents, There is no need to restrain the casing of the high voltage cable like the conventional uninterruptible power transformer system and to restore it again, so that the operation is simple and convenient, and the working time required is reduced, so that the power can be supplied to the power user quickly.

In addition, by using a temporary cut-out switch in place of the protective fuse function built into the high-voltage switch and transformer, a small-sized temporary transformer can be used instead of a large-sized transformer device, So that it is possible to secure quick mobility and to easily enter the small low-pressure repair vehicle in a narrow route, thereby inducing the construction to be carried out quickly.

FIG. 1 is a block diagram of a temporary power supply method using an indirect live-wire method when a transformer failure occurs according to an embodiment of the present invention.
FIG. 2 is a view for explaining a temporary power supply method through indirect live wire method when the transformer failure shown in FIG. 1 occurs; FIG.

A temporary power supply method using an indirect live wire method when a transformer failure occurs according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. Detailed descriptions of well-known functions and constructions that may be unnecessarily obscured by the gist of the present invention will be omitted.

1 and 2 illustrate a temporary power supply method using an indirect live-wire method when a transformer failure occurs according to an embodiment of the present invention. FIG. 1 is a schematic diagram of a temporary power supply method according to an embodiment of the present invention, FIG. 2 is a view for explaining a temporary power supply method through the indirect live wire method when the transformer failure shown in FIG. 1 occurs.

As shown in the figure, the temporary power supply method 100 using the indirect live-wire method when a transformer failure occurs according to an embodiment of the present invention includes a first step S10, a second step S20, (S30), a fourth step (S40), a fifth step (S50), a sixth step (S60), and a seventh step (S70).

1 and 2B, the first step S10 includes a low-voltage cable 10 to be connected to the low-voltage cable 2 connected to the fault-generating pneumatic transformer 1, The high voltage cable 20 to be connected to the high voltage cable 3 connected to the temporary transformer 30 is connected to the temporary transformer 30 and the low voltage switch 31 of the temporary transformer 30 is opened.

In the third step S30 to open the low-voltage switch 31, even if the temporary transformer 30 and the low-voltage cable 2 are connected through the low-voltage cable 10, the electrical connection is blocked To ensure the safety of the work.

2, the second step S20 includes a cut-off switch 5 (COS) formed on the high-voltage line 4 connecting the fault-generating pneumatic transformer 1 and the high-voltage cable 3, phase transformer 1 and the low-voltage cable 2 are electrically connected to each other by opening a cut-out switch to cut off the electrical connection between the fault-generating pneumatic transformer 1 and the high-voltage cable 3, (6) is separated and recovered.

In other words, both the electrical connection with the pillar transformer 1 to be replaced are cut off, so that the pillar transformer 1 can be stably replaced or repaired.

 As shown in FIGS. 1 and 2D, in the third step S30, the low voltage cable 10 connected to the temporary transformer 30 is connected to the low voltage cable 2 connected to the fault generating pneumatic transformer 1 .

Here, by electrically connecting the temporary transformer 30 and the low-voltage cable 2 through the low-voltage cable 10, the electric power provided through the temporary transformer 30 is smoothly transmitted through the low-voltage cable 10 To be supplied to the low-voltage electric wire (2).

In this case, the temporary transformer 30 may be grounded to the earth so as to prevent electric safety accidents in advance.

As shown in FIGS. 1 and 2E, in the fourth step S40, the branch 50 provided with the temporary cut-out switch 40 is easily hooked to the high-voltage electric wire 3, and the temporary cut- (40) is a step of fixing in an open state.

Here, the temporary cut-out switch 40 is electrically connected to the temporary transformer 30 and the high voltage cable 3 electrically connected to each other through the fifth step S50 and the sixth step S60, It is possible to perform the functions of the high voltage switch used in the conventional uninterruptible transformer type transformer and the protective fuse incorporated in the transformer together, so that the scale of the equipment can be reduced in comparison with the conventional one, The facility can be easily installed to ensure rapid mobility.

As shown in FIG. 2E, the branch sprocket 50 is protruded from the center of the temporary cut-out switch 40 and includes a coupling protrusion 51 having a coupling hole 51a formed therein, The upper rods 52 are formed with hook-shaped fastening rings 52a so as to be easily fixed to the high-voltage electric wire 3 and have a female screw hole 52b at the bottom thereof. And a lower rod (53) having a male protrusion (53a) penetrating the binding hole (51a) and fastened to the female screw hole (52b) of the upper rod (52)

The engagement of the upper rod 52 and the lower rod 53 firmly binds the coupling protrusion 51 so that the position of the temporary cutout switch 4 connected to the coupling protrusion 51 is fixed, The position of the temporary cut-out switch 40 fixed to the spindle 50 can be easily fixed by fastening the fixed ring 52a of the branch spindle 50 to the high-voltage electric wire 3. [

At this time, it is preferable that the upper rod 52 and the lower rod 53 have insulation and are made of light and hard FRP (fiber reinforced plastics).

The high voltage cable 20 connected to the temporary transformer 30 is connected to the secondary side 42 of the temporary cut-out switch 40 as shown in FIGS. 1 and 2f. And connected to the primary 5a side of the cut-out switch 5 formed on the high-voltage line 4 connected to the high-voltage line 3 at the primary 41 side of the temporary cut-out switch 40 The jumper cable 60 is connected.

That is, the high voltage cable 20 and the jumper cable 60 are connected to prepare the electrical connection between the temporary transformer 30 and the high voltage cable 3.

1 and 2G, in the sixth step S60, a live wire clamp 70 is connected to an end of the jumper cable 60, and the live wire clamp 70 is connected to the live wire rod 7, To the primary 5a side of the cut-out switch 5 to electrically connect the high voltage cable 3 and the temporary transformer 30 to each other.

That is, the high voltage electric wire 3 and the temporary transformer 30 are electrically connected through the electrical connection of the cutout switch 5, the jumper cable 60, the temporary cutout switch 40 and the high voltage cable 20 It is easy to connect.

At this time, since the indirect live wire operation can be performed through the live wire clamp 70, it is possible not only to prevent an electric safety accident that may occur during the operation of the high voltage wire live wire, but also to perform the live wire work easily and quickly .

As shown in FIG. 2G, the live wire clamp 70 is formed at one side thereof with a connection ring 71 so as to be easily connected to the jumper cable 60, and a fixing groove 72 is formed therein. A guide hole 73 is formed in the fixing groove 72 so that a thread 73a is formed in the guide groove 73. When the guide hole 73 is rotated through the guide hole 73, And a binding body (74) for moving forward or backward in the fixing groove (72)

Out switch 5 is inserted into the fixing groove 72 of the live wire clamp 70 while the end of the jumper cable 60 is connected to the connection ring 71 of the live wire clamp 70 Out switch 5 is pressed to one end of the binding body 74 by rotating the binding body 74 with the live operating rod 7 so that the live binding clamps 7a, 70 can be easily fixed to the primary side of the cut-out switch 5 so that the indirect live wire work can be safely performed.

At this time, the other end of the binding body 74 is preferably formed in an annular ring shape so that the operator can easily rotate the binding body 74 with the barb operating rod 7.

As shown in FIGS. 1 and 2h, the seventh step S70 electrically connects the high voltage cable 3 and the temporary transformer 30 by pressing the temporary cut-out switch 40, Voltage transformer 30 and the low-voltage transformer 30 to electrically connect the low-voltage transformer 30 and the low-voltage transformer 30 to electrically connect the high-voltage transformer 30 to the low-voltage transformer 30, So that power is temporarily supplied to the power user.

That is, at the time of repairing and replacing the pillar transformer 1, power can be temporarily supplied through the temporary transformer 30 instead of the pillar transformer 1, .

The method for supplying the temporary power supply through the indirect live-wire method when the transformer failure occurs according to the present invention comprises the step-up transformer (1) and the high-voltage transformer (3) The primary side 41 of the temporary cut-out switch 40 connected to the high voltage cable 20 connected to the temporary transformer 30 is connected to the jumper cable 60 and the live clamp 70 The electric power supply circuit is constructed by the indirect live wire operation through the operation of the electric transformer 30 so that the process of electrically connecting the high voltage electric wire 3 to the temporary transformer 30 is safe, It is possible to supply the temporary power to the power user quickly because the work is simple and convenient, and the working time required is reduced because there is no need to reload the high voltage electric wire (3) like the construction transformer type and to restore it The.

In addition, since the provisional cut-out switch 40 is used in place of the protection fuse function built in the high-voltage switch and the transformer, the provisional transformer 30 can be used instead of the large-sized transformer device, It is possible to easily mount the equipment on a small vehicle, thereby ensuring quick mobility, and facilitating entry of a small vehicle into a narrow road, thereby prompting the construction to be carried out quickly.

In the event of a transformer failure in accordance with an embodiment of the present invention having the above-described configuration, the temporary power supply method 100 through the indirect live line method is performed as follows.

First, as shown in FIG. 2A, if the pillar transformer fails and needs to be replaced or repaired, the small-sized low-pressure repair vehicle equipped with the equipment is used to quickly move to the site.

Then, as shown in FIG. 2B, the low voltage cable and the high voltage cable are connected to the temporary transformer, and the low voltage switch of the temporary transformer is kept open. (S10)

Thereafter, the cut-out switch 5 (COS) formed on the high-voltage line 4 connecting the pneumatic transformer 1 and the high-voltage electric wire 3 is opened and the pneumatic transformer 1 is opened, as shown in Fig. And a low voltage line 6 for electrically connecting the pillar transformer 1 and the low voltage cable 2 to each other to separate and recover the electrical connection between the pillar transformer 1 and the pneumatic transformer 1, . (S20)

The low voltage cable 10 connected to the temporary transformer 30 is connected to the low voltage cable 2 connected to the pillar transformer 1 as shown in FIG. 2d. (S30)

At this time, the temporary transformer 30 is grounded to the earth to prevent an electrical safety accident in advance.

Thereafter, as shown in Fig. 2E, the operator mounts the fastener 50 on which the temporary cut-out switch 40 is installed on the high-voltage electric wire 3, and mounts it on the live wire. (S40)

At this time, the temporary cut-out switch 40 is fixed in an open state.

2f, the high voltage cable 20 connected to the temporary transformer 30 is connected to the secondary side 42 of the temporary cutout switch 40, and the temporary cutout switch 40 The jumper cable 60 is connected to the primary side 41 of the main body 41. (S50)

2g, a wire clamp 70 is connected to the end of the jumper cable 60 and the wire clamp 70 is connected to the cut-out switch 5 through the wire rod 7, So that the high voltage cable 3 and the temporary transformer 30 are electrically connected to each other. (S60)

2h, the temporary cutout switch 40 is pressed to electrically connect the high voltage cable 3 to the temporary transformer 30, and the low voltage switch 31 of the temporary transformer 30 is connected to the high voltage cable 3, Voltage transformer 30 and the low-voltage cable 2 to electrically connect the high-voltage cable 3 to the low-voltage cable 2 via the temporary transformer 30, Power supply. (S70)

It is needless to say that the worker can reliably perform opening and pressing of the cut-out switch 5 and the temporary cut-out switch 40 through the operating rod (not shown).

When the pneumatic transformer is repaired or replaced, when the transformer failure occurs according to the present invention, if it is required to dismantle the installed equipment in the temporary power supply method 100 through the indirect live line method, .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. You will understand the point. It goes without saying that variations can be made by those skilled in the art without departing from the spirit of the present invention. Accordingly, the scope of claim of the present invention is not limited within the scope of the detailed description, but will be defined by the following claims and technical ideas thereof.

1. Pole transformer 2. Low voltage wire
3. High voltage cable 4. High voltage cable
5. Cutout switch 6. Low voltage cable
7. Activation rod
10. Low-voltage cable 20. High-voltage cable
30. Temporary transformer 40. Temporary cutout switch
50. Spindle 51. Bonding projection
52. Upper rod 53. Lower rod
60. Jumper cable 70. Live clamp
71. Connecting ring 72. Fixing groove
73. Guide ball 74. Binding member
S10. First step S20. Step 2
S30. Third step S40. Step 4
S50. Step 5 S60. Step 6
S70. Step 7
100. Temporary power supply method by indirect live wire method in case of transformer failure

Claims (3)

The low voltage cable 10 to be connected to the low voltage electric wire 2 connected to the failure generating pneumatic transformer 1 and the high voltage cable 20 to be connected to the high voltage electric wire 3 connected to the failure occurrence pneumatic transformer 1 are connected to a temporary transformer 30), and opening the low-voltage switch (31) of the temporary transformer (30);
A cut-out switch 5 (COS) formed on a high-voltage line 4 connecting the fault-generating pneumatic transformer 1 and the high-voltage electric wire 3 is opened to generate a fault- (S20) for separating and recovering a low-voltage line (6) for electrically connecting the fault-generating pneumatic transformer (1) and the low-voltage cable (2) after the electrical connection of the faulty pneumatic transformer (3) is cut off;
A third step (S30) of connecting the low voltage cable (10) connected to the temporary transformer (30) to the low voltage cable (2) connected to the fault generating pneumatic transformer (1);
A fourth step (S40) of fixing the branch 50 provided with the temporary cut-out switch 40 to the high-voltage electric wire 3 by simple fastening, while fixing the temporary cut-out switch 40 in the open state;
A high voltage cable 20 connected to the temporary transformer 30 is connected to the secondary side 42 of the temporary cutout switch 40 and a high voltage cable 20 connected to the primary side 41 of the temporary cut- A fifth step S50 of connecting the jumper cable 60 to be connected to the primary 5a side of the cut-out switch 5 formed on the high-voltage line 4 connected to the electric wire 3;
A live wire clamp 70 is connected to the end of the jumper cable 60 and the live wire clamp 70 is connected to the primary 5a side of the cut-out switch 5 through the live wire rod 7 A sixth step (S60) of electrically connecting the high voltage cable (3) and the temporary transformer (30); And
The temporary cutout switch 40 is pressed to electrically connect the high voltage cable 3 to the temporary transformer 30 and the low voltage switch 31 of the temporary transformer 30 is pressed so that the temporary transformer 30, And a seventh step S70 of electrically connecting the low voltage wires 2 to allow the electricity of the high voltage wires 3 to be supplied to the low voltage wires 2 through the temporary transformer 30. Thus,
In the repair and replacement of the pneumatic transformer 1, it is possible to temporarily supply power through the provisional transformer 30 instead of the pneumatic transformer 1 in which the failure occurs, so that the power failure can be prevented during the time of replacing the pneumatic transformer 1 Wherein the transformer is connected to the transformer.
The method according to claim 1,
The branch (50)
A coupling protrusion 51 protruding from the center of the temporary cut-out switch 40 and having a coupling hole 51a formed therein,
An upper rod 52 having a hook-shaped fixing ring 52a formed at an upper portion thereof so as to be easily fixed to the high voltage electric wire 3 and having a female screw hole 52b formed at the lower portion thereof,
And a lower rod 53 having a male protrusion 53a penetrating through a coupling hole 51a of the coupling protrusion 51 and being fastened to the female screw hole 52b of the upper rod 52, ,
The position of the temporary cut-out switch 4 connected to the coupling protrusion 51 is fixed by tightly coupling the coupling protrusion 51 by the combination of the upper bar 52 and the lower bar 53,
Wherein the upper rod (52) and the lower rod (53) are insulative and formed of light FRP (fiber reinforced plastics) material.
The method according to claim 1,
The live wire clamp (70)
A connection ring 71 is formed at one side of the jumper cable 60 so as to be easily connected to the jumper cable 60. A fixing groove 72 is formed in the fixing groove 72 and a thread 73a is formed in the fixing groove 72 A guide hole 73 is formed to penetrate through the guide hole 73. When the guide hole 73 is rotated through the guide hole 73 and is rotated while being guided by the guide hole 73 and one end is moved forward or backward in the fixing groove 72, ),
The other end of the binding body (74) is formed in an annular ring shape so that an operator can easily rotate the binding body (74) with the live wire operating rod (7). A method of provisional powering through.

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