KR20230146778A - Safety screen for high voltage cable and underground power line switching device having the same - Google Patents

Abstract

The safety screen for high-voltage lines according to an embodiment of the present invention is a screen that is connected to the case of an underground distribution line switch and blocks the high-voltage line accommodated inside the case, and includes a sheet; a sheet holder that partially covers the top of the sheet and is provided along the longitudinal direction; and a connection band connected through the seat holder and extending upward to connect the seat to the case, wherein in a state where the connection band is connected to the case, the seat covers the high-voltage line and exposes it to the outside. You can block it from happening.

Description

Safety screen for high voltage lines and underground distribution line switch including the same {SAFETY SCREEN FOR HIGH VOLTAGE CABLE AND UNDERGROUND POWER LINE SWITCHING DEVICE HAVING THE SAME}

The present invention relates to a safety shield for high-voltage lines and an underground distribution line switch including the same.

In general, electricity with a voltage of about 20,000V from a power plant is boosted to an ultra-high voltage suitable for transmission and transmitted to the primary substation, and the electricity transmitted to the primary substation is stepped down to about 22.9kV and transmitted to the secondary substation or each customer. supplied. Electricity supplied from the secondary substation is supplied to each consumer's power receiving facility through a distribution system consisting of overhead distribution lines and underground distribution lines. And the electricity supplied to each customer's power receiving facility is supplied to extra-high voltage customers, high-voltage customers, and low-voltage customers who receive electricity through various outdoor transformers.

As the number of electricity consumers increases and the form of electricity usage becomes more complex, electricity suppliers are installing multi-circuit switches and breakers for underground distribution lines in each location to open or close the current as needed.

Switches for underground distribution lines are configured to measure, monitor, and control conditions remotely through a terminal unit (FRTU). By collecting and analyzing real-time information with smart sensors, the system identifies abnormal signs in power facilities and electricity quality and responds in advance. It's a situation.

Meanwhile, most of these switches require preventive inspection in advance due to equipment deterioration due to long-term use, and since the high-voltage line (22.9kV) is exposed to the outside at the bottom of the distribution automation system terminal device, there is a problem of electric shock accidents for workers. . In addition, when working on distribution automation system terminal devices, some processes are carried out on top of high-voltage lines, so there is a potential risk of causing safety accidents in the power system due to falling tools, etc.

The present invention is intended to solve the above problems, and the purpose of the embodiment of the present invention is to provide a high-voltage line that can prevent electrical disasters and power system safety accidents caused by electric shock of workers in structures where high-voltage lines are exposed. The purpose is to provide a safety screen for a furnace and an underground distribution line switch including the same.

The safety screen for high-voltage lines according to an embodiment of the present invention is a screen that is connected to the case of an underground distribution line switch and blocks the high-voltage line accommodated inside the case, and includes a sheet; a sheet holder that partially covers the top of the sheet and is provided along the longitudinal direction; and a connection band connected through the seat holder and extending upward to connect the seat to the case, wherein in a state where the connection band is connected to the case, the seat covers the high-voltage line and exposes it to the outside. You can block it from happening.

The connection band may have a ring member at an end that is detachably connected to the case.

The connection band can adjust the position of the sheet by adjusting its length.

The seat holder has a plurality of receiving holes formed to penetrate integrally with the sheet, and the connecting band can be provided by being accommodated in the receiving holes.

The receiving hole is formed in the form of a slit extending along the longitudinal direction of the sheet, and the connecting band may be provided to slide left and right along the receiving hole.

The seat and the seat holder may be made of an electrically insulating material.

It further includes a fixing band extending downward from the sheet and connected to the case, and the fixing band can fix the sheet while the connecting band is connected to the case.

The fixing band is provided with elasticity to enable extension and contraction, and may be provided with a hook at an end.

The sheet has a plurality of connection holes at the bottom, and the fixing band can be provided by being inserted into the connection holes.

An underground distribution line switch according to an embodiment of the present invention includes a case including an upper part including a control device, a terminal device, and a communication device, and a lower part including a switch device composed of a high-voltage line; And it may include a safety shield that is connected to the case and covers the high-voltage line accommodated inside the case.

According to an embodiment of the present invention, a safety shield for high-voltage lines and an underground distribution line switch including the same are provided, which can prevent electrical disasters and power system safety accidents caused by electric shock of workers in structures where high-voltage lines are exposed. It can be.

1 is a diagram schematically showing a state in which the door of a case is opened in an underground distribution line switch according to an embodiment of the present invention.
Figure 2 is a diagram schematically showing a state in which a safety screen is installed in the case of the underground distribution line switch of Figure 1.
Figure 3 is a front view schematically showing a safety shield for a high-voltage line according to an embodiment of the present invention.
Figure 4 is a side view schematically showing the safety shield for the high voltage line of Figure 3.
Figure 5 is a front view schematically showing a safety shield for a high-voltage line according to another embodiment of the present invention.
Figure 6 is a side view schematically showing the safety shield for the high voltage line of Figure 5.
Figure 7 is a diagram schematically showing the state in which the safety shield for the high-voltage line of Figure 5 is installed in the underground distribution line switch.

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

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, the second component may be referred to as the first component without departing from the scope of the present invention, and similarly, the first component may also be referred to as the second component. The term and/or includes any of a plurality of related stated items or a combination of a plurality of related stated items.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

In the description of the embodiment, in the case where one component is described as being formed “on or under” another component, (on or under) includes both components that are in direct contact with each other or one or more other components that are formed (indirectly) between the two components. Additionally, when expressed as 'on or under', it can include not only the upward direction but also the downward direction based on one component.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Hereinafter, embodiments will be described in detail with reference to the attached drawings, but identical or corresponding components will be assigned the same reference numbers regardless of reference numerals, and duplicate descriptions thereof will be omitted.

Figure 1 is a diagram schematically showing a state in which the door of the case is opened in the underground distribution line switch according to an embodiment of the present invention, and Figure 2 is a schematic diagram showing a state in which a safety screen is installed on the case in the underground distribution line switch of Figure 1. 3 is a front view schematically showing a safety shield for high-voltage lines according to an embodiment of the present invention, and FIG. 4 is a side view schematically showing the safety barrier for high-voltage lines of FIG. 3.

Referring to the drawings, the underground distribution line switch (1) according to an embodiment of the present invention may include a case (10) and a safety shield (20).

Case 10 is a structure installed on the ground in an underground distribution line, and may be made of a material with high rigidity.

The inside of the case 10 can be divided into an upper part (10A) and a lower part (10B). The upper part 10A may include a control device 12, a terminal unit (FRTU) 13, a communication device 14, etc. The lower part 10B may include a switching device 16 composed of a high-voltage line 17, etc.

The control device 12, terminal device 13, and communication device 14 are installed in the control box 15 to acquire various information on the distribution line, transmit it to the main device (not shown), and execute commands received from the main device. It can be configured to do so.

The switch device 16 is a general term for load switches and protection devices for wiring automation that are installed and used on distribution lines, and can perform the original functions of the switch such as closing and opening in connection with the high-voltage line 17. Additionally, information can be transmitted to the terminal device 13 and control commands of the terminal device 13 can be performed.

In general, the lower part 10B has no failure elements after installation and therefore requires little maintenance. On the other hand, since the upper part 10A is composed of various electronic components, most maintenance and maintenance work is concentrated on the upper part 10A.

Maintenance and maintenance work is carried out with the door 11 of the case 10 open, and there is a risk of safety accidents to workers, such as electric shock, due to contact with the high-voltage line 17 of the lower part 10B during work. Additionally, there is a risk of a power system safety accident due to falling tools, etc.

In the present invention, an insulating safety screen 20 is applied to the installation portion of the high-voltage line 17 of the lower part 10B, excluding the work space of the upper part 10A, to reduce the risk of work from electrical disasters.

The safety screen 20 according to an embodiment of the present invention is connected to the case 10 with the door 11 open and can be configured to cover the high-voltage line 17 including the switchgear accommodated inside the case 10. there is.

Referring to the drawings, the safety shield 20 according to an embodiment of the present invention may include a seat 100, a seat holder 200, and a connection band 300.

The sheet 100 may have an overall rectangular shape corresponding to the internal space of the case 10. Additionally, it may have a size that sufficiently covers and obscures the lower part 10B within the case 10.

Sheet 100 may be made of an electrical insulating material. In one embodiment, sheet 100 may be made of silicone rubber. Accordingly, the sheet 100 has flexibility in addition to electrical insulation, making it easy to store in any form, and is light in weight, improving transportation and work efficiency.

The sheet holder 200 extends a predetermined width from the top of the sheet 100 to the bottom, partially covering the top of the sheet 100, and may be provided along the longitudinal direction. That is, the sheet holder 200 may be provided in a structure in which the top of the sheet 100 is padded to a predetermined width along the longitudinal direction. Accordingly, the rigidity of the upper end of the sheet 100 can be reinforced by the sheet holder 200.

The seat holder 200 may be provided on either the front or rear side of the seat 100 at the top of the seat 100. Additionally, the seat holder 200 may be provided at the front and rear of the seat 100 at the top of the seat 100.

The seat holder 200 may be provided with a plurality of receiving holes 210 that are integrally formed with the seat 100. The receiving hole 210 may be formed in a slit shape extending along the longitudinal direction of the sheet 100.

The seat holder 200 may be made of an electrically insulating material. In one embodiment, the seat holder 200 may be made of epoxy, but is not limited thereto.

The connection band 300 may be connected to the seat 100 by penetrating the seat holder 200. Specifically, the connection band 300 may be received and connected to the receiving hole 210 provided in the seat holder 200.

The connection band 300 may be provided in plural numbers corresponding to the receiving hole 210.

The connection band 300 extends upward from the seat holder 200 and is connected to the case 10, thereby connecting the seat 100 to the case 10. That is, the sheet 100 can be connected to the case 10 through the connection band 300. And, while the connection band 300 is connected to the case 10, the sheet 100 can be arranged to cover the high-voltage line 17 and prevent it from being exposed to the outside.

For connection to the case 10, the connection band 300 may be provided with a ring member 310 at an end that is detachably connected to the case 10. In an embodiment, the ring member 310 may include a rotating loop, a snap hook, etc.

In order to secure a working space for the upper part (10A), the connection band 300 may have a structure whose length can be adjusted by being provided with a length adjustment member 320 such as a Walja aperture, and the length of the connection band 300 can be adjusted by adjusting the length of the connection band 300. The position of the sheet 100 can be adjusted.

Additionally, the connection band 300 may be provided to slide left and right along the receiving hole 210. Therefore, it is possible to secure work space by moving the connection band 300 so that the connection band 300 does not interfere with work.

Figures 5 to 7 schematically show another embodiment of a safety shield for high-voltage lines according to the present invention.

Figure 5 is a front view schematically showing a safety barrier for a high-voltage line according to another embodiment of the present invention, Figure 6 is a side view schematically showing a safety barrier for a high-voltage line of Figure 5, and Figure 7 is a schematic view of a safety barrier for a high-voltage line of Figure 5. This is a diagram schematically showing the state in which the safety shield is installed on the underground distribution line switch.

The configuration of the safety barrier 30 for high-voltage lines according to the embodiment shown in FIGS. 5 and 6 is substantially the same as the safety barrier 20 for high-voltage lines according to the embodiment shown in FIGS. 3 and 4. However, there is a difference in that the safety shield 30 for a high-voltage line according to the embodiment shown in FIGS. 5 and 6 further includes a fixing band 400. Below, we will mainly explain the differences.

Referring to the drawings, the safety shield 30 for a high-voltage line according to an embodiment of the present invention may further include a fixing band 400 provided at the lower part of the sheet 100.

The fixing band 400 may extend downward from the seat 100 and be connected to the case 10. In an embodiment, the sheet 100 has a plurality of connection holes 110 at the bottom, and the fixing band 400 may be provided by being inserted into the connection holes 110.

The connection hole 110 may be eyelet-processed to reinforce rigidity.

The fixing band 400 may be provided to connect and secure the sheet 100 to the case 10 in conjunction with the connecting band 300. Specifically, while the connecting band 300 is connected to the upper part of the case 10 to connect the sheet 100 to the upper part of the case 10, the fixing band 400 is connected to the lower part of the case 10 to connect the sheet 100 to the upper part of the case 10. (100) can be connected to the lower part of the case (10).

Accordingly, the sheet 100 can be fixed to the case 10 in a state in which it is pulled in the vertical direction by the connection band 300 extending upward and the fixing band 400 extending downward.

The fixing band 400 has elasticity and can be extended and contracted. In an embodiment, the fixing band 400 may include an elastic rope with elasticity.

For connection to the case 10, the fixing band 400 may be provided with a hook 410 at an end.

A worker performing maintenance and maintenance work on the switch (1) opens the door (11) of the case (10) and attaches the connection band (300) or the connection band (300) and fixing band (400) to the case (10). ), you can simply install the safety screens (20, 30) by connecting them. Additionally, work space can be easily secured by adjusting the length and position of the connection band 300 as needed.

In this way, by covering the high-voltage line (17) exposed to the outside with a safety screen (20, 30), the risk of work from electrical disasters such as electric shock can be reduced, thereby ensuring the safety of workers and improving work efficiency. You can.

After the work is completed, simply remove the safety shields (20, 30), fold them for easy transportation, and move to the switch (1) to perform the next work.

Although the present invention has been described above with reference to embodiments, those skilled in the art can make various modifications and modifications to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that you can change it. And, the differences related to these modifications and changes should be construed as being included in the scope of the present invention as defined in the appended claims.

1: switch 10: case
10A: upper part 10B: lower part
11: door 12: control device
13: Terminal device (FRTU) 14: Communication device
15: Control box 16: Switchgear
17: high voltage line 20: safety shield
100: Sheet 110: Connection hole
200: seat holder 210: receiving hole
300: Connection band 310: Ring member
320: Length adjustment member 400: Fixing band
410: Hanging hook

Claims (10)

As a screen connected to the case of the underground distribution line switch and covering the high-voltage line accommodated inside the case,
Sheet;
a sheet holder that partially covers the top of the sheet and is provided along the longitudinal direction; and
a connection band connected through the seat holder and extending upward to connect the seat to the case;
Including,
A safety shield for a high-voltage line, characterized in that while the connection band is connected to the case, the sheet covers the high-voltage line and blocks it from being exposed to the outside.
According to paragraph 1,
A safety shield for a high-voltage line, characterized in that the connection band has a ring member at an end that is detachably connected to the case.
According to paragraph 1,
A safety shield for high-voltage lines, characterized in that the connection band adjusts the position of the sheet by adjusting the length.
According to paragraph 1,
The seat holder is provided with a plurality of receiving holes integrally formed with the sheet, and the connection band is provided by being accommodated in the receiving holes.
According to paragraph 4,
The receiving hole is formed in the form of a slit extending along the longitudinal direction of the sheet, and the connection band is provided to slide left and right along the receiving hole.
According to paragraph 1,
A safety shield for high-voltage lines, characterized in that the sheet and the sheet holder are made of an electrical insulating material.
According to paragraph 1,
Further comprising a fixing band extending downward from the seat and connected to the case,
The fixing band is a safety shield for high-voltage lines, characterized in that the sheet is fixed in a state in which the connection band is connected to the case.
In clause 7,
The fixing band is provided with elasticity to enable extension and contraction, and is a safety shield for a high-voltage line, characterized in that it is provided with a catching hook at an end.
In clause 7,
The sheet is provided with a plurality of connection holes at the bottom, and the fixing band is provided by being inserted into the connection holes.
A case including an upper part including a control device, a terminal device, and a communication device, and a lower part including a switch device composed of a high-voltage line; and
A safety screen connected to the case and covering the high-voltage line accommodated inside the case;
Including,
The safety barrier is an underground distribution line switch, characterized in that the safety barrier according to paragraph 1.

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