KR102724649B1 - COS Device for Bypass Method and Bypass Cable Device with Life and Death Display Function - Google Patents

Abstract

The bypass cable device of the present invention may include: a first connection end connected to a first live line for an uninterruptible bypass method; a second connection end connected to a second live line for an uninterruptible bypass method; a bypass line section forming a bypass distribution path between the first live line and the second live line; a first COS electrically turning on/off a rotational state of a holder while maintaining a mechanical connection state between the first connection end and the bypass line section; a first life/death indicator section indicating a pressurized state of the holder of the first COS; a second COS electrically turning on/off a rotational state of the holder while maintaining a mechanical connection state between the second connection end and the bypass line section; and a second life/death indicator section indicating a pressurized state of the holder of the second COS.

Description

{COS Device for Bypass Method and Bypass Cable Device with Life and Death Display Function}

The present invention relates to a bypass cable device having a temporary COS device equipped with a life-or-death lamp so as to replace a construction switch at a power distribution site.

Work at a power distribution site refers to a series of actions performed at power distribution facilities and their vicinity for the purpose of installing, removing, and maintaining power distribution facilities, and all work done under a clear work purpose and implementation plan.

Figure 1a shows an example of diagonal work, Figure 1b shows an example of direct live-line work, and Figure 1c shows an example of indirect live-line work.

Diagonal work is work performed on lines or equipment that are not energized due to methods such as the installation of new lines or a power outage.

The method refers to the method of construction applied to achieve the purpose of work performed in power distribution facilities and their vicinity, and when working on exposed live wires or equipment, there is a method of wearing personal safety equipment such as rubber insulating gloves appropriate for the voltage used and working while directly contacting the live part, a method of working without contact using an insulating stick, and an uninterrupted work method that supplies electricity to customers within the work area without interruption.

All work processes of the uninterruptible power construction method involve live work such as cutting and compressing wires, installing and removing clamps, etc. Therefore, there is no difference between the indirect live-line work method in which the worker uses an insulated live-line tool such as an insulating stick to work without making contact with exposed conductors or equipment that are subject to high voltage or higher outside the proximity limit of live parts, and the direct live-line work method in which the worker wears insulating protective gear suitable for the work of exposed conductors or equipment, etc. and works while in direct contact with live parts. The uninterruptible power construction method is included in the category of live-line work methods.

Figure 2 is a conceptual diagram illustrating the uninterruptible bypass cable method.

Fig. 3a shows a typical bypass terminal cable, Fig. 3b shows a typical construction-use switch, and Fig. 3b shows the installation structure of the bypass terminal cable.

Uninterruptible power supply work includes bypass cables, construction switches, mobile transformers, and mobile generators. When applying uninterruptible power supply work to a site, the power source connected to the work area must be separated to ensure the safety of workers and equipment due to customer-owned generators, ESS storage devices, and distributed power supply reverse pressure, and work must be started only after confirming whether the power source has been separated.

Bypass cable construction is a type of construction that temporarily transmits electricity to the power and load sides of a construction section using bypass cables or newly constructed lines, while cutting the jumper wires on the power and load sides of the construction section and converting the construction section into a diagonal state. This is a construction method that protects workers safely by making the construction section into a diagonal state and allows customers who use electricity to perform electrical work without inconvenience from power outages.

As shown in Fig. 3c, the bypass cable method temporarily supplies power to customer lines by connecting the power and load sides of a construction section in parallel with a bypass cable and a construction switch.

Figures 4a to 4c are photographs exemplifying a method for branching a single-phase bypass cable. Figure 4a shows a single-phase branch within a three-phase bypass section, Figure 4b shows two construction-use switches installed, and Figure 4c shows a construction-use switch product.

In order to transmit a 1-phase branch within a 3-phase bypass cable construction section, an additional 1 construction switch is required in addition to the 2 construction switches used in the existing construction method. Since the construction switch is used even in the 1-phase bypass cable construction method that does not require phase measurement, labor costs increase by 46% compared to temporary COS construction.

In addition, construction switches are mobile machines with built-in gas pressure, and there is a very high risk of safety accidents due to gas leakage and malfunctions due to frequent installation, vibration, and storage problems. In addition to the two construction switches installed in the uninterruptible bypass cable section, installing additional construction switches not only increases economic costs due to equipment and work requirements, but also increases the possibility of equipment malfunctions and resulting safety accidents.

The problems of the existing bypass method are summarized as follows: In order to transmit 1-phase branch power within the 3-phase bypass method section, additional construction switches must be used, and especially, even in the 1-phase bypass cable method that does not require phase measurement, construction switches must be used, which reduces economic efficiency. In addition, the possibility of safety accidents due to gas leakage and malfunction inside the construction switches increases, and the construction process is complicated when installing the construction switches, which takes a long time.

Republic of Korea Public Notice No. 10-2022-0030727: Cutout switching device for line capable of remote trip detection and distribution system having the same

The present invention aims to provide a COS device and a bypass cable device for a bypass method with a life-or-death indication function that can eliminate costs and work requirements due to the installation of a construction switch.

A COS device for a bypass method with a life-or-death indication function according to one aspect of the present invention may include: a connection member that is connected to a live line using an insulated live line tool; a switch frame that maintains a mechanical connection state with a bypass line in an insulated state; a holder that turns on/off an electrical connection between the live line and the bypass line as a rotational state with respect to the switch frame; and a life-or-death indication unit that indicates a pressurized state of the holder.

Here, the holder has one end rotatably connected to the switch frame, and the other end can be fastened to or detached from the switch frame.

Here, the holder may include a tool handle so as to be rotatable using an insulated live tool.

Here, the life or death indicator may be located between the holder and the switch frame near the end or on the outer surface of a part of the holder.

Here, the life-or-death display unit may include an electromagnetic induction generator that extracts driving power by an electromagnetic field emitted in a floating pressurized state; and a light-emitting element that emits light by the driving power.

According to another aspect of the present invention, a bypass cable device having a life-or-death indication function may include: a first connection end connected to a first live line for an uninterruptible bypass method; a second connection end connected to a second live line for an uninterruptible bypass method; a bypass line section forming a bypass distribution path between the first live line and the second live line; a first COS electrically turning on/off a rotational state of a holder while maintaining a mechanical connection state between the first connection end and the bypass line section; a first life-or-death indication section indicating a pressurized state of the holder of the first COS; a second COS electrically turning on/off a rotational state of the holder while maintaining a mechanical connection state between the second connection end and the bypass line section; and a second life-or-death indication section indicating a pressurized state of the holder of the second COS.

Here, the first life-or-death indicator section can secure driving power by an electromagnetic field emitted when the first COS is in a floating pressurized state and emit light, and the second life-or-death indicator section can secure driving power by an electromagnetic field emitted when the second COS is in a floating pressurized state and emit light.

Here, the holder of the first COS and the holder of the second COS may be provided with a tool handle so as to be rotated using an insulated live tool.

Here, the bypass line section may include a first elbow connecting the straight connection between the first live line and the second live line and the first COS; and a second elbow connecting the straight connection between the first live line and the second live line and the second COS.

Here, the bypass line section may further include a first bypass clamp for connecting the line of the first elbow and the line of the first COS on a support mechanism of the pole for the first live line; and a second bypass clamp for connecting the line of the second elbow and the line of the second COS on a support mechanism of the pole for the second live line.

By implementing the COS device and bypass cable device for the bypass method with the life and death indication function according to the idea of the present invention of the above-described configuration, there is an advantage in that the cost and work required due to the installation of a construction switch can be suppressed. In other words, when using the temporary COS method, economical construction is possible compared to the installation of a construction switch, and the construction time can be shortened due to increased construction efficiency compared to the construction of a construction switch.

The COS device and bypass cable device for a bypass method with a life-or-death indication function of the present invention have the advantage of significantly reducing the risk of safety accidents and power outages due to the use of construction switches, and increasing worker safety with a temporary COS for the life-or-death indication lamp.

Figure 1a is a photograph showing an example of diagonal work, Figure 1b is a photograph showing an example of direct live-line work, and Figure 1c is a photograph showing an example of indirect live-line work.
Figure 2 is a conceptual diagram expressing the uninterruptible bypass cable method.
Figure 3a shows a typical bypass terminal cable, and Figure 3b shows photographs of a typical construction switch.
Figure 3b is a conceptual diagram showing the installation structure of a bypass terminal cable.
Figures 4a to 4c are photographs illustrating a single-phase branching method for an uninterruptible bypass cable.
FIG. 5 is a photograph showing an example of a COS device for a bypass method with a life-or-death indication function according to the idea of the present invention.
FIG. 6 is a perspective view showing an embodiment of a COS device for a bypass method with a life-or-death indication function according to the invention.
FIG. 7 is a conceptual diagram illustrating one embodiment of a bypass cable device with a life-or-death indication function according to the invention.

In describing the present invention, terms such as first, second, etc. may be used to describe various components, but the components may not be limited by the terms. The terms are only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

When it is said that a component is connected or coupled to another component, it can be understood that it may be directly connected or coupled to that other component, but there may also be other components in between.

The terminology used in this specification is only used to describe specific embodiments and is not intended to limit the invention. The singular expression may include the plural expression unless the context clearly indicates otherwise.

In this specification, terms such as “include” or “have” are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, and can be understood as not excluding in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

Additionally, the shape and size of elements in the drawing may be exaggerated for clearer explanation.

The reason why a construction switch is used in the conventional bypass method described above is that it has a lamp that can confirm the input and release of electricity, and there is less risk of erroneous transmission, so a construction switch is also used in the one-phase branch transmission method.

On the other hand, in order to facilitate constructability at a construction site, reduce the risk of accidents due to equipment failure, and increase economic efficiency, if a temporary COS is applied that has a built-in lamp device that visually confirms that electricity is flowing and/or pressurized so that workers can check when the temporary COS is energized, the construction-use switch described above can be omitted. That is, the present invention proposes a temporary COS method that is safer, more constructable, and more economical than the use of a construction-use switch, and specifically proposes a bypass cable device and a COS device for the bypass method.

FIG. 5 is a photograph illustrating an example of a COS device for a bypass method with a life-or-death indication function according to the invention.

FIG. 6 is a perspective view illustrating an embodiment of a COS device for a bypass method with a life-or-death indication function according to the invention.

A COS device (100) for a bypass method with a city life-or-death indication function may include a connection member (110) that is connected to a live line using an insulated live line tool; a switch frame (120) that maintains a mechanical connection state with a bypass line in an insulated state; a holder (140) that turns on/off an electrical connection between the live line and the bypass line as a rotational state with respect to the switch frame (120); and a life-or-death indication unit (160) that indicates a pressurized state of the holder (140).

As shown, the holder (140) has one end rotatably connected to the switch frame (120) and the other end is formed to be capable of being fastened or detached from the switch frame (120), and the switch frame (120) is provided with a holder fastening portion (149) that maintains the fastening state of the other end of the holder (140).

The holder (140) is provided with a tool handle (144) so that it can be rotated using an insulated live-line tool, and depending on the implementation, the holder fastening portion (149) can also be manipulated using an insulated live-line tool. Likewise, the fastening end (110) can also be connected to a live line using an insulated live-line tool. The insulated live-line tool used here is equipment widely used in recent indirect live-line methods, and therefore, a separate description thereof will be omitted.

The above-mentioned life and death indicator (160) can be generated by an electromagnetic field emitted from the floating pressurized holder (140) even when the holder (140) is detached from the switch frame (120) (i.e., in the off state), and it is desirable to place it in a position where it can be easily observed by a worker working below.

From this perspective, for example, the life or death indicator (160) may be located between the holder (140) and the switch frame (120) near the end, or on the outer surface of a portion of the holder (140). Alternatively, it may be located at a portion (180) connected to the bypass line at the bottom of the holder (140) and the switch frame (120).

Specifically, the life and death display unit (160) may include an electromagnetic induction generator that extracts driving power by an electromagnetic field emitted in a floating pressurized state; and a light-emitting element that emits light by the driving power.

A fuse may be built into the internal space of the holder (140) as in a typical COS, and depending on the implementation, the coil constituting the electromagnetic induction generator may have a form that surrounds the fuse or fuse line.

According to the structure described above, the COS device for bypass method suggested by the present invention is characterized by being distinguished from COS devices that visually display on/off states among conventional technologies in that the life/death indicator (160) emits light not only when the distribution current flows through the holder (140) in the on state of the COS, but also when the holder (140) is removed from the switch frame (120) (i.e., in the COS off state), and the bypass line is connected to another high-voltage/ultra-high-voltage live line, so that the bypass line and the COS are in a floating state.

The floating pressurization detection method using the above-described electromagnetic induction generator effectively recognizes the floating pressurization state, and can prevent the life and death indicator from being damaged by a large current in an energized state due to the external insulation effect of the above-described electromagnetic induction generator itself. That is, even if a high electromagnetic field is applied by a large current in an energized state, power is generated only as much as the power generation capacity of the above-described electromagnetic induction generator itself, so that a large current/large voltage is not applied to the light-emitting element, thereby preventing damage.

FIG. 7 illustrates one embodiment of a bypass cable device with a life-or-death indication function according to the invention.

A bypass cable device having an illustrated life-or-death indication function may include: a first connection end connected to a first live line (LL) for an uninterruptible bypass method; a second connection end connected to a second live line for an uninterruptible bypass method; a bypass line section forming a bypass distribution path between the first live line (LL) and the second live line; a first COS (100-1) electrically turning on/off a rotational state of a holder while maintaining a mechanical connection state between the first connection end and the bypass line section; a first life-or-death indication section (160-1) for indicating a pressurized state of the holder of the first COS; a second COS (100-2) electrically turning on/off a rotational state of the holder while maintaining a mechanical connection state between the second connection end and the bypass line section; and a second life-or-death indication section (160-2) for indicating a pressurized state of the holder of the second COS (100-2).

The first life and death indicator (160-1) secures driving power by an electromagnetic field emitted when the first COS (100-1) is in a floating and pressurized state and emits light, and the second life and death indicator (160-2) secures driving power by an electromagnetic field emitted when the second COS (100-2) is in a floating and pressurized state and emits light.

Additionally, the holder of the first COS (100-1) and the holder of the second COS (100-2) may be provided with a tool handle so that they can be rotated using a separate insulated live tool.

In the case of the urban implementation, the bypass line section includes a first elbow (301) connecting the straight connection box (400) between the first live line and the second live line and the first COS (100-1); and a second elbow (302) connecting the straight connection box (400) between the first live line and the second live line and the second COS (100-2).

Additionally, the bypass line section may further include a first bypass clamp (201) for connecting the line of the first elbow (301) and the line of the first COS (100-1) on a support mechanism of a pole for the first live line (LL); and a second bypass clamp (202) for connecting the line of the second elbow (302) and the line of the second COS (100-2) on a support mechanism of a pole for the second live line.

In order to temporarily transmit power for a 1-phase branch in a 3-phase uninterruptible bypass cable construction section, it is necessary to connect a bypass cable line from a live high-voltage line to a 1-phase high-voltage line. As shown in Fig. 7, a temporary COS device can be used to replace the construction switch to perform branch bypass cable transmission. That is, the construction method shown in Fig. 7 can be applied as a 1-phase bypass cable branch transmission method having a current transmission path of 3-phase high-voltage line → temporary COS → bypass cable → straight connection box → bypass cable → 1-phase high-voltage line.

At this time, a warning lamp that informs the worker of the current being supplied or floating pressurized is lit, and the worker can visually check the current status of the relevant line. In particular, even in the case of floating pressurized state where only one side of the entire bypass current path is connected, the lamp on the other side can be lit to recognize that it is in a pressurized and dangerous state.

There are advantages in that it reduces the use of unnecessary construction switches, eliminates risk factors for safety accidents in advance, enables economical construction through cheaper temporary COS, and significantly reduces construction time, preventing customer inconvenience.

In addition, there is no need to use a separate construction switch when constructing a single-phase extra-high voltage line, so construction is completed safely and quickly.

Next, the method and configuration for branching a single-phase uninterruptible bypass cable using a temporary COS through the present invention will be exemplified, and the safety advantages will be specifically exemplified.

First, install a 1-phase bypass cable in the form of a straight connection box (400) and 1st/2nd elbows (301, 302). (The same applies to a 3-phase uninterruptible bypass cable.)

Next, a power-side temporary COS (100-1) with a built-in life-or-death lamp is installed on the power-side line, and a load-side temporary COS (100-2) is installed on the load-side line. At this time, the power-side temporary COS (100-1) and the load-side temporary COS (100-2) are installed in the off state.

Next, fasten the power side bypass clamp (201) and fasten the load side bypass clamp (202).

When all connections for the bypass current path are completed, the power-side temporary COS (100-1) is connected by connecting the holders of each temporary COS, and the load-side temporary COS (100-2) is connected. At this time, at the moment when one of the power-side temporary COS (100-1) and the load-side temporary COS (100-2) is connected first, the first life-or-death indicator (160-1) and the second life-or-death indicator (160-2) located at the 2 COS are simultaneously lit.

Afterwards, the worker disconnects the power supply to Phase 1 and initiates any necessary actions/repair work.

In the above-described process, even if the worker accidentally installs one of the two COSs on the power/load side line while turning it on, or fails to notify the other side while turning on one of the two COSs, the lamps on both COSs will light up, allowing the worker to recognize this, thereby preventing a safety accident.

Although regulations require the use of insulated live-line tools, workers who are aware that the bypass path is in an unpressurized diagonal state can easily neglect safety, and if the bypass path is unexpectedly energized, this negligence can result in a serious accident.

On the other hand, in the case of the present invention, when the bypass current path is pressurized by floating, the life and death indicators on both sides light up to notify that it is pressurized (or live), so that such accidents can be prevented without using a construction switch.

Those skilled in the art should understand that the present invention can be implemented in other specific forms without changing the technical idea or essential characteristics thereof, and that the embodiments described above are exemplary in all respects and not restrictive. The scope of the present invention is indicated by the claims described below rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

100: COS device for bypass method 110: Fastening end
120 : Switch Frame 140 : Holder
144: Tool handle 160: Life and death indicator
149: Holder fastening part 400: Straight connection box
301: 1st elbow 302: 2nd elbow
201: 1st bypass clamp 202: 2nd bypass clamp

Claims (10)

A terminal that is connected to a live wire using an insulated live wire tool;
A switch frame which maintains an insulated mechanical connection to the bypass line;
A holder for turning on/off the electrical connection of the live line and the bypass line in a rotating state with respect to the switch frame; and
A life indicator that indicates the pressurized state of the holder
Including, but not limited to,
The life and death indicator above is,
An electromagnetic induction generator extracting driving power by an electromagnetic field emitted in a floating pressurized state; and
A light-emitting element that emits light by the above driving power
COS device for bypass method including.
In the first paragraph,
The above holder,
A COS device for a bypass method, wherein one end is rotatably connected to the switch frame and the other end is capable of being connected to or detached from the switch frame.
In the second paragraph,
The above holder,
Tool handle to enable rotation using insulated live tools
COS device for bypass method including.
In the second paragraph,
The life and death indicator above is,
A COS device for bypass method located between the holder and the switch frame or on the outer surface of a part of the holder in the vicinity of the above-mentioned stage.
delete A first terminal connected to the first live line for the uninterruptible bypass method;
A second terminal connected to the second live line for the uninterruptible bypass method;
A bypass line section forming a bypass distribution path between the first live line and the second live line;
A first COS that electrically turns on/off the rotational state of the holder while maintaining the mechanical connection state of the first connecting section and the bypass line section;
A first life or death indicator indicating the pressurized state of the holder of the first COS;
A second COS that electrically turns on/off the holder in a rotational state while maintaining the mechanical connection state between the second connecting section and the bypass line section; and
A second life and death indicator indicating the pressurized state of the holder of the second COS
A bypass cable device including:
In Article 6,
The above first life and death indicator portion is driven by an electromagnetic field emitted when the first COS is in a floating pressurized state and emits light.
The above second life-or-death indicator is a bypass cable device that secures driving power by an electromagnetic field emitted when the second COS is in a floating pressurized state and emits light.
In Article 6,
The holder of the first COS and the holder of the second COS,
A bypass cable device having a tool handle so that it can be rotated using an insulated live tool.
In Article 6,
The above bypass line section,
A first elbow connecting the first COS and the straight connection between the first live wire and the second live wire; and
A straight connection between the first live wire and the second live wire and a second elbow connecting the second COS
A bypass cable device including:
In Article 9,
The above bypass line section,
A first bypass clamp for connecting the line of the first elbow and the line of the first COS on the supporting mechanism of the electric pole for the first live line; and
A second bypass clamp for connecting the line of the second elbow and the line of the second COS on the supporting mechanism of the electric pole for the second live line
A bypass cable device further comprising: