KR20230127474A - A fuse included jumper cable for indirect wire and the method of using it - Google Patents

Abstract

The present invention relates to a fuse-integrated indirect live line jumper cable and a COS replacement method using the same and, more specifically, to a fuse-integrated indirect live line jumper cable and a COS replacement method using the same, which can apply a COS for a distribution line or a pole-mounted transformer to indirect live line uninterruptible replacement and pole-mounted transformer uninterruptible transmission within a bypass cable method section. The fuse-integrated indirect live wire jumper cable for replacement of a faulty COS comprises: a secondary side clamp part (211) fixed to a transformer primary bushing high-speed part (112) arranged in a transformer (111); an insulated stick part (210) connected to the secondary side clamp part (211); a fuse link holder part (212) connected between the secondary side clamp part (211) and the insulated stick part (210); and a jumper cable (213) connected to a branch loop part (118) provided on a distribution line part (117) of which one end is connected to the fuse link holder part (212) and the other end is mounted on a utility pole (110). Therefore, the fuse-integrated indirect live line jumper cable can overcome difficulties in indirect live wire work using indirect sticks, thereby facilitating the replacement of COS through indirect live line work.

Description

A fuse included jumper cable for indirect wire and the method of using it}

The present invention relates to a jumper cable for indirect live wire with a built-in fuse and a COS replacement method using the same, and more specifically, COS for distribution lines or pole-type transformers is applied to uninterruptible replacement of indirect live wires and uninterruptible transmission of pole-type transformers within the bypass cable construction section. It relates to a fuse-embedded jumper cable for indirect live wire and a COS replacement method using the same.

The direct live wire construction method is a method in which workers directly handle the live wire through which current flows during distribution construction.

Since the direct live wire method may cause an electric shock or burn accident even when wearing insulated gloves or flame retardant clothing, it has recently been recommended to proceed with the indirect live wire method.

The indirect live wire method works by using a tool (such as a smart stick) from a distance of 2 to 3 m instead of handling the wire by hand, and bypasses the current so that electricity does not flow in the working section (bypass cable method), which prevents safety accidents. risk can be greatly reduced.

In other words, the 'indirect live line method' means that a power distribution uninterruptible (live line) electrician rides a live line work vehicle and uses an insulation stick and tip tool to cut/compress power lines without contact, install an insulation cover, and perform tasks such as protection of charging points. it is a technique

However, the indirect live wire construction method has a problem in that the labor cost burden increases as the construction time is longer than that of the direct live wire method.

A cut out switch (COS) used for power distribution refers to a fuse support device and may include a fuse link.

COS for distribution is classified into Expulsion Type and Liquid Filled Type. Currently, the COS used for 22.9kV lines in KEPCO uses the discharge type open type COS.

In the emission type COS, when a fault current flows, the arc heat generated by melting the fuse decomposes the material on the inner wall of the fuse cylinder to generate an insulating gas, which suppresses the continuation of the arc and expands by heat to release ionized gas to the outside to extinguish the arc and cut off the current.

Conventional direct live COS uninterruptible replacement work is shown in FIG.

First, the jumper cable support 10 is installed on the iron rail.

Next, the branch ring cover 20 is removed and a temporary COS clamp is installed in the branch ring compression part.

Next, the temporary COS lower stud bolt and the primary clamp of the jumper cable 30 are connected to each other.

Next, the secondary clamp of the jumper cable 30 is installed on the primary bushing metal part 40 of the pole-type transformer.

Next, the COS replacement operation is performed.

As such, in the case of the prior art, since the total weight of the equipment required for the replacement work is considerable, difficulties exist in the indirect live wire work using the indirect stick.

In addition, according to the prior art, there is a disadvantage in that complex facilities and structures are required for uninterruptible work, and the safety of the operator is threatened and the work efficiency is lowered due to the difficulty of the work.

On the other hand, when replacing the three-phase COS for such a conventional transformer, there is a disadvantage that an uninterruptible transformer car is required.

In other words, for uninterruptible work, a separate uninterruptible transformer vehicle was required, which was inconvenient and uneconomical.

KR 2249164 B1

The present invention to overcome the problems of the prior art as described above is a jumper cable for indirect live wire with a built-in fuse that can perform uninterruptible COS replacement work without requiring a separate uninterruptible transformer vehicle, while overcoming difficulties in indirect live wire work using an indirect stick, and using the same Its purpose is to provide a COS replacement method.

A jumper cable for an indirect live wire for replacing a defective COS, comprising: a secondary side clamp part 211 fixed to a transformer primary bushing rapid part 112 provided in a transformer 111; an insulating stick part 210 connected to the secondary side clamp part 211; a fuse link holder part 212 connected between the secondary side clamp part 211 and the insulating stick part 210; Jumper cables 213 having one end connected to the fuse link holder part 212 and the other end connected to the branch ring part 118 provided in the distribution line part 117 mounted on the electric pole 110; It includes a fuse-embedded jumper cable for indirect live wire that includes a.

In addition, the jumper cable 213 includes a fuse-embedded jumper cable for indirect live wire, characterized in that it is temporarily installed on the support part 116 provided on the electric pole 110.

In addition, the fuse link holder part 212 includes a fuse-embedded jumper cable for an indirect live wire, characterized in that the end is formed extending upward in parallel with the longitudinal direction of the electric pole 110.

In addition, the insulation stick part 210 includes a fuse-embedded jumper cable for indirect live wire, characterized in that the length is at least 1.5 meters or more.

In addition, the fuse link holder unit 212 includes a fuse-embedded jumper cable for indirect live wire, characterized in that a fuse according to the capacity of the transformer 111 is mounted.

In addition, a preparation step of preparing the insulation stick part 210, the secondary side clamp part 211, the fuse link holder part 212, and the jumper cable 213 in a pre-assembled state on the ground; an assembling step of assembling the secondary side clamp part 211 to the transformer primary bushing rapid part 112 by using the insulation stick part 210; and a method for replacing a defective COS using a fuse-embedded jumper cable for an indirect live wire including a replacement step of replacing the defective COS.

In addition, in the jumper cable for indirect live wire for replacing defective COS uninterruptedly, the secondary side clamp part 221 fixed to the transformer primary bushing rapid part 122 provided in the transformer 121; an insulating stick part 220 connected to the secondary side clamp part 221; a fuse link holder part 222 connected between the secondary side clamp part 221 and the insulation stick part 220; a jumper cable 223 having one end connected to the fuse link holder part 222 and the other end connected to the T-shaped connecting member part 300; It includes a fuse-embedded jumper cable for indirect live wire that includes a.

In addition, the T-shaped connecting member 300 includes a fuse-embedded jumper cable for indirect live wire, characterized in that it is directly connected to the transformer 121 to transmit power.

In addition, the fuse link holder unit 222 includes a fuse-embedded jumper cable for indirect live wire, characterized in that a fuse according to the capacity of the transformer 121 is mounted.

In addition, the insulation stick part 220 includes a fuse-embedded jumper cable for indirect live wire, characterized in that the length is at least 1.5 meters or more.

In addition, a preparation step of preparing the insulation stick part 220, the secondary side clamp part 221, the fuse link holder part 222, and the jumper cable 223 in a pre-assembled state on the ground; an assembling step of assembling the secondary side clamp part 221 to the transformer primary bushing rapid part 122 by using the insulating stick part 220; a replacement step of replacing the defective COS; It includes an uninterruptible defective COS replacement method using a jumper cable for indirect live wire with a built-in fuse including.

According to the present invention as described above, there are the following effects.

First, it overcomes difficulties in indirect live wire work using an indirect stick, and presents the strength of easy COS replacement through indirect live wire work.

Second, according to the bypass bank power transmission according to the second preferred embodiment of the present invention, the advantage of being able to work easily without requiring a separate uninterruptible transformer vehicle like the conventional one is exhibited.

Third, the working time is shortened compared to installing an uninterruptible transformer car, and the indirect live cable application rate is improved by solving the problem of excessive working time, which is a disadvantage of the existing indirect live cable, resulting in improved construction quality.

Fourth, uninterruptible equipment can be simplified and applied to indirect live wires, so the overall work can be simplified.

Fifth, it provides the effect of reducing budget, reducing worker's fatigue, and preventing safety accidents through indirect live wire work.

Sixth, since the T-shaped connection member 300 is used, a conventional uninterruptible transformer vehicle is not separately required.

1 is a prior art
Figure 2 is a view of replacing the indirect live line COS according to the first preferred embodiment of the present invention
3 is a view of bypass bank power transmission according to a second preferred embodiment of the present invention;

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention.

In describing each figure, like reference numbers are used for like elements.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another.

For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. The term "and/or" includes any combination of a plurality of related listed items or any of a plurality of related listed items.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this application, it should not be interpreted in an ideal or excessively formal meaning. Should not be.

First, the indirect live line COS replacement according to the first preferred embodiment of the present invention will be described.

2 is a diagram illustrating the replacement of an indirect live line COS according to a first preferred embodiment of the present invention.

A transformer 111 is installed on the electric pole 110.

On the other hand, the wancheolbu 115 is installed on the upper side of the electric pole 110, the replacement target COS (114) is provided on the wancheolbu (115).

In addition, a wancheol is provided at the top of the electric pole 110, and a support unit 116 is provided in the wancheol.

In addition, the distribution line unit 117 is supported by an insulator in the iron of the upper end of the electric pole 110.

The branch ring unit 118 is installed in the distribution line unit 117 .

At this time, the COS to be replaced 114 is the COS to be replaced.

In this case, the insulation stick part 210, the secondary side clamp part 211, the fuse link holder part 212, the jumper cable 213, and the clamp part 214 can be used for the replacement of the COS 114 to be replaced. .

The secondary side clamp unit 211 is provided to extend in the longitudinal direction of the insulation stick unit 210 from the front end of the insulation stick unit 210 .

The fuse link holder unit 212 may be provided to extend vertically between the secondary clamp unit 211 and the insulation stick unit 210 in an upward direction with respect to the longitudinal direction of the secondary clamp unit 211 .

In this case, a fuse may be embedded in the fuse link holder unit 212 .

At this time, it is preferable that the fuse can be replaced according to the capacity of the transformer.

The secondary side clamp part 211 is fixed to the transformer primary bushing rapid part 112 provided at the top of the transformer 111 .

At this time, the insulation stick part 210, the secondary side clamp part 211, the fuse link holder part 212 and the jumper cable 213 are connected to each other in advance on the ground and raised to the working position to be connected to the transformer 111 that may be desirable.

In this case, the weight of the insulation stick part 210, the secondary side clamp part 211, the fuse link holder part 212, the jumper cable 213, and the clamp part 214 is more compared to the replacement equipment according to the prior art. Since it is lightweight and has a simple configuration, the effect of greatly improving workability can be exerted.

On the other hand, it may be preferable that the secondary side clamp part 211 is made of a copper material.

More specifically, one end of a jumper cable 213 is connected to an upper end of the fuse link holder unit 212, and a clamp unit 214 is provided at the other end of the jumper cable 213.

The clamp portion 214 may be temporarily fixed to the branch ring portion 118 .

Meanwhile, the jumper cables 213 may be mounted on the support unit 116 .

Meanwhile, the length of the insulation stick unit 210 may be preferably 1.5 meters or more in order to facilitate indirect live wire work.

The indirect live wire COS replacement work according to the first preferred embodiment of the present invention is as follows.

First, the secondary clamp unit 211 and the fuse link holder unit 212 are installed on the insulation stick unit 210, and the jumper cable 213 is connected to the fuse link holder unit 212, and then the secondary clamp unit ( 211) is fixed to the transformer primary bushing rapid part 112, which is the top of the transformer 111 provided on the pole 110.

Meanwhile, the jumper cable 213 is temporarily placed on the support part 116 and the clamp part 214 is connected to the branch ring part 118.

In this case, a separate bypass path is formed in addition to the path passing through the existing COS wiring part 113 connected to the branch ring part 118, and the supply of current to the existing COS wiring part 113 is cut off.

Next, the insulation stick part 210, the secondary side clamp part 211, the fuse link holder part 212, the jumper cable 213, and the clamp part 214, which have undergone the replacement operation of the COS 114 to be replaced, By removing it, the replacement target COS 114 is completed.

Next, a view of bypass bank power transmission according to a second preferred embodiment of the present invention will be described.

3 is a view of bypass bank power transmission according to a second preferred embodiment of the present invention.

As shown in FIG. 3, the bypass bank power transmission according to the second preferred embodiment of the present invention includes an insulation stick part 220, a secondary side clamp part 221, a fuse link holder part 222, a jumper cable 223, and a clamp part 224 and the T-shaped connecting member 300 may be used.

The insulation stick part 220, the secondary side clamp part 221, the fuse link holder part 222, the jumper cable 223, and the clamp part 224 may be prepared while being connected to each other on the ground.

On the other hand, a T-shaped connecting member 300 for uninterrupted power is provided on the ground.

That is, one end of the jumper cable 223 may be connected to the T-shaped connection member 300 provided on the ground, and the other end may be installed such that the clamp part 224 is detachably attached to the fuse link holder part 222.

Meanwhile, it may be preferable that the secondary side clamp part 221 is made of copper.

A transformer 121 is provided on the electric pole 120 .

At the upper end of the transformer 121, a transformer primary bushing rapid part 122 is provided.

The replacement target COS 124 is provided at one end of the wancheolbu 125 provided at the top of the electric pole 120.

The replacement target COS 124 is a replacement COS.

Meanwhile, the existing COS wiring unit 123 has one end connected to the upper end of the transformer primary bushing rapid part 122 and the other end connected to the branch ring cover part 127 provided on the distribution line unit 126.

In this case, a replacement operation of the COS 124 to be replaced will be described.

First, a secondary clamp unit 221 is provided on one side of the insulation stick unit 220 on the ground, and a fuse link holder unit 222 is provided between the secondary clamp unit 221 and the insulation stick unit 220. .

More specifically, the fuse link holder unit 222 may have one end connected to a portion between the secondary side clamp unit 221 and the insulation stick unit 220 and the other end connected to the clamp unit 224 while extending toward the ground.

One end of the jumper cable 223 is connected to the fuse link holder part 222 by the clamp part 224, and the other end is connected to the T-shaped connector part 300 on the ground.

On the other hand, the T-shaped connection member 300 plays a role of transmitting power by being directly connected to the transformer side instead of the mobile vehicle transformer within the bypass section.

Therefore, since the T-shaped connecting member 300 is used, a conventional uninterruptible transformer vehicle is not separately required.

The operator can easily and quickly perform the primary bushing of the transformer by using the insulating stick part 220, the secondary side clamp part 221, the fuse link holder part 222, the jumper cable 223, and the clamp part 224 assembled in advance on the ground. The secondary side clamp part 221 may be coupled to the part 122 .

At this time, the operator uses the insulating stick part 220 to allow the secondary side clamp part 221 to be assembled to the transformer primary bushing rapid part 122.

Meanwhile, the length of the insulation stick unit 220 may be preferably 1.5 meters or more in order to facilitate indirect live wire work.

In this case, a fuse may be embedded in the fuse link holder unit 222 .

At this time, it is preferable that the fuse can be replaced according to the capacity of the transformer.

As such, the secondary side clamp part 221 is connected to the upper end of the transformer primary bushing rapid part 122 by using the insulation stick part 220, and the jumper cable 223 connects the fuse link holder part 222 and the T-type When connected between the connector parts 300, uninterruptible replacement of the COS 124 to be replaced becomes possible.

After replacing the COS (124) to be replaced, the insulation stick part 220, the secondary side clamp part 221, the fuse link holder part 222, the jumper cable 223, the clamp part 224, and the T-type connector part The replacement work of the COS 124 to be replaced can be completed by separating the 300 .

According to the bypass bank power transmission according to the second preferred embodiment of the present invention, the advantage of being able to work easily without requiring a separate uninterruptible transformer vehicle is exhibited.

That is, the working time is shortened compared to installing an uninterruptible transformer car, and the application rate of the indirect live cable is improved by solving the problem of excessive working time, which is a disadvantage of the existing indirect live cable, resulting in improved construction quality.

In addition, uninterruptible equipment can be simplified and applied to indirect live lines, so the overall work can be simplified.

In the end, it provides the effect of reducing budget, reducing worker's fatigue, and preventing safety accidents through indirect live wire work.

110: electric pole
111: transformer
112: transformer primary bushing metal part
113: Existing COS wiring part
114: replacement target COS
115: iron part
116: support
117: distribution line unit
118: branch ring
210: insulation stick part
211: secondary side clamp
212: fuse link holder unit
213: jumper cable
214: clamp part
120: electric pole
121: transformer
122: transformer primary bushing metal part
123: Existing COS wiring part
124: replacement target COS
125: iron part
126: distribution line unit
127: branch ring cover
220: insulation stick part
221: secondary side clamp
222: fuse link holder unit
223: jumper cable
224: clamp part
300: T-type connection member

Claims (11)

In the jumper cable for indirect live wire for replacing a defective COS,
A secondary side clamp part 211 fixed to the transformer primary bushing rapid part 112 provided in the transformer 111;
an insulating stick part 210 connected to the secondary side clamp part 211;
a fuse link holder part 212 connected between the secondary side clamp part 211 and the insulation stick part 210;
Jumper cables 213 having one end connected to the fuse link holder part 212 and the other end connected to the branch ring part 118 provided in the distribution line part 117 mounted on the electric pole 110; including,
Jumper cable for indirect live wire with built-in fuse.
According to claim 1,
Characterized in that the jumper cable 213 is temporarily installed on the support part 116 provided on the electric pole 110,
Jumper cable for indirect live wire with built-in fuse.
According to claim 1,
The fuse link holder portion 212 is characterized in that the end is formed extending upward in parallel with the longitudinal direction of the electric pole 110,
Jumper cable for indirect live wire with built-in fuse.
According to claim 1,
The insulation stick part 210 is characterized in that the length is at least 1.5 meters or more,
Jumper cable for indirect live wire with built-in fuse.
According to claim 1,
The fuse link holder unit 212 is characterized in that a fuse according to the capacity of the transformer 111 is mounted.
Jumper cable for indirect live wire with built-in fuse.
According to any one of claims 2 to 5,
A preparation step of preparing the insulation stick part 210, the secondary side clamp part 211, the fuse link holder part 212, and the jumper cable 213 in a pre-assembled state on the ground;
an assembling step of assembling the secondary side clamp part 211 to the transformer primary bushing rapid part 112 by using the insulating stick part 210;
A replacement step of replacing the defective COS; including,
How to replace defective COS using jumper cable for indirect live wire with built-in fuse.
In the jumper cable for indirect live wire for replacing defective COS uninterruptedly,
A secondary side clamp part 221 fixed to the transformer primary bushing rapid part 122 provided in the transformer 121;
an insulating stick part 220 connected to the secondary side clamp part 221;
a fuse link holder part 222 connected between the secondary side clamp part 221 and the insulation stick part 220;
a jumper cable 223 having one end connected to the fuse link holder part 222 and the other end connected to the T-shaped connecting member part 300; including,
Jumper cable for indirect live wire with built-in fuse.
According to claim 7,
Characterized in that the T-shaped connection member 300 is directly connected to the transformer 121 to transmit power,
Jumper cable for indirect live wire with built-in fuse.
According to claim 7,
Characterized in that a fuse according to the capacity of the transformer 121 is mounted in the fuse link holder unit 222.
Jumper cable for indirect live wire with built-in fuse.
According to claim 9,
The insulation stick part 220 is characterized in that the length is at least 1.5 meters or more,
Jumper cable for indirect live wire with built-in fuse.
The method of any one of claims 7 to 10,
A preparation step of preparing the insulation stick part 220, the secondary side clamp part 221, the fuse link holder part 222, and the jumper cable 223 in a pre-assembled state on the ground;
an assembling step of assembling the secondary side clamp part 221 to the transformer primary bushing rapid part 122 by using the insulating stick part 220;
a replacement step of replacing the defective COS; including,
Uninterruptible defective COS replacement method using jumper cable for indirect live wire with built-in fuse.