KR102678930B1 - Electric shock accident prevention system for extra-high voltage transmission and distribution line - Google Patents

Abstract

The present invention relates to workers who perform inspection and repair work on the transmission tower of an extra-high voltage transmission line or around the transmission tower, or to workers who are located around the transmission tower of the extra-high voltage transmission line and move clothes or belongings toward the transmission tower. It relates to an electric shock prevention system for extra-high voltage transmission lines that allows ordinary pedestrians approaching the direction of transmission towers due to blowing phenomenon, etc. to be more safely protected from electric shock accidents. The system for preventing electric shock accidents in extra-high voltage transmission lines according to the present invention is the first electric shock accident prevention system. It is configured to include an accident protection device and a second electric shock protection device, wherein the first electric shock accident protection device includes an insulating coating layer, an operator floor board, an earth leakage monitoring unit, and an earth leakage warning unit, and the second electric shock protection device The device consists of an insulated walkway structure, a human body detection sensor, a voice output unit, and a control unit.

Description

Electric shock accident prevention system for extra-high voltage transmission and distribution line}

The present invention relates to an electric shock prevention system for extra-high voltage transmission lines in the field of power transmission technology. More specifically, the present invention relates to transmission towers of extra-high voltage transmission lines and workers or workers who perform inspection and repair work on the extra-high voltage transmission lines around the transmission towers. An electric shock prevention system for extra-high voltage transmission lines that allows ordinary pedestrians who are located near the towers of extra-high voltage transmission lines and approach the towers to be more safely protected from electric shock accidents due to the phenomenon of clothing or belongings flying toward the tower. It's about.

In general, extra-high voltage power produced from a supplier is supplied through overhead transmission lines or underground transmission lines.

To further explain the example of an overhead transmission line that supplies extra-high voltage power (hereinafter referred to as “extra-high voltage transmission line”), extra-high voltage transmission lines are usually installed by being supported on a transmission tower and are protected from lightning, salt damage, and internal overvoltage. Various protective devices are installed to ensure this.

In order to stably transmit power through the above-mentioned extra-high voltage transmission line, regular inspection and maintenance/repair work on the extra-high voltage transmission line is necessary.

Accordingly, workers climb the transmission tower of the extra-high voltage transmission line and perform inspection and maintenance/repair work on the extra-high voltage transmission line equipment, such as insulators and clamps.

However, during the regular inspection and maintenance/repair work on the extra-high voltage transmission line as described above, there was a constant risk of the worker receiving an electric shock.

In addition, when extra-high voltage transmission lines are installed close to residential areas, roadsides, factories, and agricultural fields, etc., there is a constant risk of electric shock occurring around the transmission towers of the extra-high voltage transmission lines.

Korean Patent No. 10-2356744 (announced on February 8, 2022), “Electric shock prevention system for distribution lines and its construction method” Korean Patent No. 10-2306935 (announced on October 1, 2021), “Electric shock prevention system for workers on high-voltage power lines” Korean Patent No. 10-1890907 (announced on September 28, 2018), “Support iron for fixing overhead distribution lines with reduced risk of electric shock”

An embodiment of the present invention is a special high-voltage transmission line electric shock prevention system that can significantly reduce the risk of electric shock for workers performing inspection and repair work on the special high-voltage transmission line and around the transmission tower. provides.

In addition, in an embodiment of the present invention, general pedestrians who are located around the transmission tower of an extra-high voltage transmission line and approach the direction of the transmission tower due to the phenomenon of clothing or belongings flying in the direction of the transmission tower are provided with an insulated walking path temporarily formed around the transmission tower. We provide an electric shock prevention system for special high-voltage transmission lines that significantly reduces the risk of electric shocks around transmission towers.

The extra-high voltage transmission line electric shock prevention system according to an embodiment of the present invention is installed on the transmission tower of the extra-high voltage transmission line, and prevents electric shock accidents for workers climbing the transmission tower to inspect and repair the extra-high voltage transmission line. The first electric shock accident protection is performed in the form of periodically measuring leakage current in the tower ascending section, which is predetermined as the area where the worker climbs in physical contact among the entire area of the transmission tower. It is installed around the transmission tower, and workers located around the transmission tower for inspection and repair work on the extra-high voltage transmission line, as well as general pedestrians moving around the transmission tower due to flying clothing or articles or other reasons. It performs the function of preventing electric shock accidents, but temporarily forms an insulated walkway (hereinafter referred to as “insulated walkway”) up to a predetermined distance from the transmission tower according to the transmission of the operator's operation control signal or the approach monitoring of general pedestrians. It may include a second electric shock protection device.

In addition, the transmission tower includes a pylon bridge buried below the ground and forming the lower end of the transmission tower, a pylon body installed on an upper side of the pylon bridge to form a lower part of the transmission tower, and a pylon body installed on an upper side of the pylon body and forming the transmission tower. An upper post forming the upper part of the upper post, a branch wire supporter installed on the upper side of the upper post and supporting an overhead branch wire composed of multiple grounding conductors to protect the transmission tower and electric line from lightning, and horizontal posts on both sides of the upper post. It has a form that includes a cross arm that protrudes in the direction and is installed to support the electric line, and a suspension insulator connected to the cross arm on which the conductors of the electric line hang, and the first electric shock protection device is installed in the tower ascending section. The target is the pylon body, upper post, and cross arm of the transmission tower, and an electrical insulating paint is applied to the pylon ascending section formed on the pylon body and upper post among the pylon ascending sections, and at the same time, the pylon of the pylon body is formed. An insulating coating layer formed in a form that connects the ascending section and the pylon ascending section of the upper post, and an insulating coating layer located below the pylon ascending section formed on the cross arm among the pylon ascending sections, and at the same time, the pylon ascending section of the cross arm It is coupled to the upper post in a parallel state, and is arranged to be located laterally from directly below the pylon ascending section of the cross arm, while the coupling portion to the upper post is located in the pylon ascending section of the upper post. An operator floor board made of an insulating material, a running rail made of an insulating material formed along the insulating film layer, and an autonomous rail installed on the running rail to operate in a one-way running manner along the running rail according to a preset operation cycle. A leakage current meter that is installed in a driving vehicle and the autonomous vehicle and performs a leakage current measurement function on the surface of the insulating coating layer after switching from a dormant mode to an active mode every time the autonomous vehicle is driven according to the operation cycle; , an earth leakage monitoring unit including a wireless communication module that transmits the measured value of the leakage current meter to an external receiving target in real time, installed at the lower part of the tower body, and the measured value of the leakage current meter from the wireless communication module. It may include an earth leakage warning unit that operates when the received measured value of the leakage current meter exceeds a preset electric shock accident safety standard value and prevents the worker from climbing on the insulating coating layer.

In addition, the second electric shock protection device is located directly below the bottom of the ascending section of the tower body and has a three-stage folding or more structure that sequentially unfolds in a direction away from the transmission tower, and responds to an operation signal from the outside. An insulating walkway structure made of an insulating material that operates to expand and temporarily forms the insulating walkway around the transmission tower, and is installed on the transmission tower to generate a human body detection signal when a human body enters within a predetermined radius centered on the transmission tower. A human body detection sensor that transmits to an external receiving target, a voice output unit installed on the transmission tower and operating according to a control signal from the outside to guide general pedestrians approaching the transmission tower through the insulated sidewalk structure, It is installed on the transmission tower, and operates the insulated sidewalk structure in an unfolded state according to the transmission of the operation control signal through the worker's smart mobile device, and unfolds the insulated sidewalk structure as a human body detection signal is received from the human body detection sensor. It may include a control unit that operates the audio output unit by operating it in a state and transmitting the control signal to the audio output unit.

According to an embodiment of the present invention, the risk of electric shock accident for workers performing inspection and repair work on the extra-high voltage transmission line and around the transmission tower can be significantly reduced.

In addition, ordinary pedestrians who are located near the transmission tower of an extra-high voltage transmission line and approach the tower due to the phenomenon of clothing or belongings flying toward the tower, access the tower through an insulated pedestrian path temporarily formed around the tower. , the risk of electric shock accidents occurring around transmission towers of extra-high voltage transmission lines can be significantly reduced.

1 is a configuration diagram schematically illustrating an electric shock prevention system for an extra-high voltage transmission line according to an embodiment of the present invention.
Figure 2 is a diagram illustrating an earth leakage detection unit of the first electric shock protection device in the extra-high voltage transmission line electric shock prevention system according to an embodiment of the present invention.
Figure 3 is a block diagram illustrating the electrical configuration of the first electric shock protection device in the special high-voltage transmission line electric shock prevention system according to an embodiment of the present invention.
Figure 4 is a block diagram illustrating the electrical configuration of the second electric shock protection device in the special high-voltage transmission line electric shock prevention system according to an embodiment of the present invention.
Figure 5 is a diagram illustrating the operating state of the insulated sidewalk structure of the second electrocution protection device in the extra-high voltage transmission line electric shock prevention system according to an embodiment of the present invention.

The following detailed description of the present invention is an embodiment in which the present invention can be practiced and refers to the accompanying drawings, which are shown as examples of the corresponding embodiments. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the invention are different from one another but are not necessarily mutually exclusive. For example, specific shapes, structures and characteristics described herein may be implemented in one embodiment without departing from the spirit and scope of the invention. Additionally, it should be understood that the location or arrangement of individual components within each described embodiment may be changed without departing from the spirit and scope of the invention.

Accordingly, the detailed description set forth below is not intended to be taken in a limiting sense, and the scope of the present invention is limited only by the appended claims together with all equivalents to what those claims would assert if properly described. Similar reference numbers in the drawings refer to identical or similar functions across various aspects.

The terms used in the present invention are general terms that are currently widely used as much as possible while considering the functions in the present invention, but this may vary depending on the intention or precedent of a person working in the art, the emergence of new technology, etc. In addition, in certain cases, there are terms arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the relevant invention. Therefore, the terms used in the present invention should be defined based on the meaning of the term and the overall content of the present invention, rather than simply the name of the term.

When it is said that a certain part of the whole of an invention “includes” a certain component, this means that, unless specifically stated to the contrary, it does not exclude other components but may further include other components. In addition, “…” stated in the specification. wealth", "… Terms such as “module” refer to a unit that processes at least one function or operation, which may be implemented as hardware or software, or as a combination of hardware and software.

Referring to FIGS. 1 to 5, a system for preventing electric shock accidents in extra-high voltage transmission lines according to an embodiment of the present invention will be described.

Figure 1 is a configuration diagram schematically illustrating an electric shock prevention system for an extra-high voltage transmission line according to an embodiment of the present invention, and Figure 2 is a diagram showing the first example of an electric shock prevention system for an extra-high voltage transmission line according to an embodiment of the present invention. It is a diagram illustrating the earth leakage detection unit of the electric shock protection device, and Figure 3 is a block diagram illustrating the electrical configuration of the first electric shock protection device in the extra-high voltage transmission line electric shock prevention system according to an embodiment of the present invention, Figure 4 is a block diagram illustrating the electrical configuration of the first electric shock protection device in the electric shock prevention system for extra-high voltage transmission lines according to an embodiment of the present invention, and Figure 5 is a block diagram illustrating the electrical configuration of the first electric shock protection device according to an embodiment of the present invention. This is a diagram illustrating the operating status of the insulated walkway structure of the second electrocution protection device in the transmission line electric shock prevention system.

As shown, the extra-high voltage transmission line electric shock prevention system according to an embodiment of the present invention includes a first electric shock protection device 100 and a second electric shock protection device 200.

The first electric shock protection device 100 is installed on the transmission tower 11 of the extra-high voltage transmission line, and this first electric shock protection device 100 is installed on the transmission tower 11 for inspection and repair work on the extra-high voltage transmission line. It performs the function of preventing electric shock accidents for workers climbing the stairs. At this time, the first electric shock protection device 100 periodically measures leakage current for the tower ascending section, which is predetermined as the area where the worker climbs in physical contact among the entire area of the transmission tower 11. It is made in the form

To be more specific, in the first electric shock protection device 100, the tower ascending section is determined to target the tower body (11b), upper post (11c), and cross arm (11b) of the transmission tower (11).

In other words, the transmission tower 11 includes a pylon bridge 11a that is buried below the ground and forms the bottom of the transmission tower 11, and a pylon body that is installed on the upper side of the pylon bridge 11a and forms the lower part of the transmission tower 11. (11b), an upper post (11c) installed on the upper side of the tower body (11b) to form the upper part of the transmission tower (11), and In order to protect the branch wire supporter (not shown), which supports an overhead branch wire composed of multiple grounding conductors, a cross arm (11d) that protrudes horizontally on both sides of the upper post (11c) and is installed to support the wire line, , It is connected to the cross arm (11d) and includes a suspension insulator (11e) on which the conductors of the electric line hang.

And the tower ascending section is determined for the tower body (11b), upper post (11c), and cross arm (11b) of the transmission tower (11).

And the first electric shock protection device 100 includes an insulating coating layer 120, an operator floor board 130, an earth leakage monitoring unit 140, and an earth leakage warning unit 150.

The insulating coating layer 120 is formed by applying an electrical insulating paint to the rising section of the tower formed on the tower body (11b) and the upper post (11c) among the tower rising sections, and at the same time, the rising section and upper part of the tower body (11b). It is formed in a form that connects the steel tower ascending section of the post (11c).

The worker floor board 130 is located below the tower ascending section formed on the cross arm 11d among the tower ascending sections and is coupled to the upper post 11c in a state parallel to the tower ascending section of the cross arm 11d. However, it is arranged to be located laterally from directly below the pylon ascending section of the cross arm (11d), and the coupling portion to the upper post (11c) is located in the pylon ascending section of the upper post (11c). And this worker floor board 130 is formed of an insulating material.

The earth leakage monitoring unit 140 includes a traveling rail 141, an autonomous vehicle 142, a leakage current meter 143, and a wireless communication module 144.

The running rail 141 is formed along the insulating coating layer 120, and this running rail 141 is made of an insulating material.

The autonomous vehicle 142 is installed on the traveling rail 141 to operate in a one-way driving manner along the traveling rail 141 according to a preset operation cycle.

The leakage current meter 143 is installed in the autonomous vehicle 142, and the leakage current meter 143 switches from the dormant mode to the active mode every time the autonomous vehicle 142 is driven according to the operation cycle, and then changes the insulating film layer. A leakage current measurement function is performed on the surface of (120).

The wireless communication module 144 transmits the measured value of the leakage current meter 143 to an external receiving target in real time. To elaborate, the wireless communication module 144 transmits the measured value of the leakage current meter 143 in real time to the earth leakage warning unit 150, which will be described later.

The earth leakage warning unit 150 is installed at the lower part of the tower body 11b, and this earth leakage warning unit 150 receives the measured value of the leakage current meter 143 from the wireless communication module 144 of the earth leakage monitoring unit 140. When the received measurement value of the leakage current meter 143 exceeds a preset electric shock accident safety standard value, it operates to prevent the worker from climbing onto the insulating coating layer 120. In this embodiment, the earth leakage warning unit 150 is configured to visually indicate that the leakage current is flowing on the surface of the insulating coating layer 120 in excess of the electric shock safety standard, but the present invention is limited to this. It doesn't work.

The second electric shock protection device 200 is installed around the transmission tower 11, and this second electric shock protection device 200 is installed around the transmission tower 11 for inspection and repair work on the extra-high voltage transmission line. It performs an electric shock prevention function for workers and general pedestrians moving around the power transmission tower (11) due to flying clothes or items or other reasons. At this time, the second electric shock protection device 200 temporarily forms an insulated walking path (hereinafter referred to as “insulated walking path”) up to a predetermined distance from the transmission tower 11 according to the worker's operation control signal transmission or general pedestrian approach monitoring. It is done in the form of orders.

And the second electric shock protection device 200 may be configured to include an insulated sidewalk structure 220, a human body detection sensor 230, an audio output unit 240, and a control unit 150.

The insulated walkway structure 220 is located directly below the bottom of the tower ascending section of the tower body 11b and is composed of three or more folds that sequentially unfold in a direction away from the transmission tower 11. Accordingly, the insulated walkway structure 220 expands according to an operation signal transmitted from the outside to temporarily form the insulated walkway around the transmission tower 11, and for this purpose, the insulated walkway structure 220 is made of an insulating material. . In addition, since the configuration of three or more stages of folding and sequential unfolding of the insulated sidewalk structure 220 can be implemented in various ways through known technologies, detailed descriptions and illustrations thereof are omitted in this embodiment.

The human body detection sensor 230 is installed on the transmission tower 11 and transmits a human body detection signal to an external receiving target when a human body enters within a predetermined radius around the transmission tower 11. To elaborate, the human body detection sensor 230 transmits a human body detection signal to the control unit 250, which will be described later.

The audio output unit 240 is installed in the transmission tower 11, and this audio output unit 240 operates according to a control signal from the outside to provide an insulated sidewalk structure 220 to general pedestrians approaching in the direction of the transmission tower 11. It performs the function of inducing access through To explain further, the voice output unit 240 operates according to the control signal transmitted from the control unit 250 and outputs a voice that induces general pedestrians approaching in the direction of the transmission tower 11 to approach through the insulated sidewalk structure 220. do.

The control unit 250 is installed on the transmission tower 11, and the control unit 250 operates the insulated sidewalk structure 220 in an unfolded state upon receipt of the operation control signal through the worker's smart mobile device 1000. In addition, the control unit 250 operates the insulated sidewalk structure 220 in an unfolded state as a human body detection signal is received from the human body detection sensor 230, and transmits the control signal to the audio output unit 240 to output audio. Operate unit 240.

Due to the above-described configuration, the risk of electric shock through the insulating film layer before workers performing inspection and repair work on the extra-high voltage transmission line contacts the steel tower ascending section provided on the transmission tower of the extra-high voltage transmission line and its insulating film layer. By visually checking in advance whether or not there is an insulating film layer and going up the transmission tower while touching the corresponding insulating coating layer, the risk of electric shock accident for workers performing various tasks on the transmission tower of an extra-high voltage transmission line can be significantly reduced.

In addition, workers who perform inspection and repair work on extra-high voltage transmission lines around the transmission towers of the extra-high voltage transmission lines, or those who are located around the transmission towers of the extra-high voltage transmission lines, may be affected by the phenomenon of clothing or belongings being thrown toward the tower. As general pedestrians approaching the transmission tower approach the transmission tower through an insulated walking path temporarily formed around the transmission tower, the risk of electric shock accidents occurring around the transmission tower of the extra-high voltage transmission line can be significantly reduced.

As described above, in this description, specific details such as specific components and limited embodiments and drawings have been described, but this is only provided to facilitate a more general understanding of the present invention, and the present invention is not limited to the above embodiments. No, those of ordinary skill in the field to which the present invention pertains can make various modifications and variations from this description.

Therefore, the idea of the present invention should not be limited to the described embodiments, and the claims described below as well as all modifications that are equivalent or equivalent to the claims will be said to fall within the scope of the idea of the present invention.

11: Transmission tower 11a: Steel tower bridge
11b: steel tower body 11c: upper post
11d: Cross arm 11e: Suspension arm
100: First electric shock protection device 120: Insulating coating layer
130: worker floor board 140: earth leakage monitoring unit
141: driving rail 142: autonomous vehicle
143: Leakage current meter 144: Wireless communication module
150: Earth leakage warning unit 200: Second electric shock protection device
220: Insulated sidewalk structure 230: Human body detection sensor
240: audio output unit 250: control unit
1000: Smart mobile device

Claims (2)

delete It is installed on the transmission tower 11 of the extra-high voltage transmission line, and performs the function of preventing electric shock accidents for workers climbing the transmission tower 11 for inspection and repair work of the extra-high voltage transmission line. A first electric shock protection device (100) configured to periodically measure leakage current in the tower climbing section, which is predetermined as the area where the worker climbs in physical contact among the entire area, and the transmission tower. It is installed around the transmission tower (11) and moves around the transmission tower (11) for inspection and repair work on the extra-high voltage transmission line, as well as workers and clothing or articles located around the transmission tower (11) flying or for other reasons. It performs the function of preventing electric shock accidents for general pedestrians, and provides an insulated walkway (hereinafter referred to as “insulated walkway”) up to a predetermined distance from the transmission tower 11 according to the transmission of the operator's operation control signal or monitoring the approach of general pedestrians. In the extra-high voltage transmission line electric shock prevention system including a second electric shock protection device 200 that is formed temporarily,
The transmission tower 11 includes a pylon bridge 11a that is buried below the ground and forms the lower end of the transmission tower 11, and is installed on the upper side of the pylon bridge 11a to form the lower part of the transmission tower 11. A steel tower body (11b), an upper post (11c) installed on the upper side of the steel tower body (11b) to form the upper part of the transmission tower (11), and installed on the upper side of the upper post (11c) to protect against lightning. In order to protect the transmission tower 11 and the electric wire, a branch wire supporter supporting an overhead branch wire composed of multiple grounding conductors, and a cross arm installed to project horizontally on both sides of the upper post 11c to support the electric wire 11d) and a suspension insulator (11e) connected to the cross arm (11d) on which the conductors of the electric line hang,
The first electric shock protection device 100,
The tower ascending section is determined for the tower body (11b), upper post (11c), and cross arm (11b) of the transmission tower (11),
An electrical insulating paint is applied to the tower rising section formed on the tower body (11b) and the upper post (11c) among the tower rising sections, and at the same time, the tower rising section of the tower body (11b) and the upper post (11c) are formed. An insulating coating layer 120 formed in a shape that connects the ascending section of the steel tower;
It is located below the pylon ascending section formed on the cross arm (11d) among the pylon ascending sections and is coupled to the upper post (11c) in a state parallel to the pylon ascending section of the cross arm (11d). An insulating material is arranged to be located laterally from directly below the tower ascending section of the arm (11d), and the coupling portion to the upper post (11c) is located in the tower ascending section of the upper post (11c). operator floor board (130);
A running rail 141 made of an insulating material formed along the insulating coating layer 120, and a one-way running operation along the running rail 141 according to a preset operation cycle are attached to the running rail 141. An autonomous vehicle 142 is installed, and the insulating coating layer 120 is installed on the autonomous vehicle 142 and switches from a dormant mode to an active mode whenever the autonomous vehicle 142 is driven according to the operation cycle. Earth leakage monitoring including a leakage current meter 143 that performs a leakage current measurement function on the surface of the device, and a wireless communication module 144 that transmits the measured value of the leakage current meter 143 to an external receiving target in real time. Wealth (140); and
It is installed at the lower part of the tower body 11b, receives the measured value of the leakage current meter 143 from the wireless communication module 144, and the received measured value of the leakage current meter 143 is preset by electric shock. It includes an earth leakage warning unit 150 that operates when the accident safety standard value is exceeded to prevent the worker from climbing on the insulating coating layer 120,
The second electric shock protection device 200,
It is located directly below the bottom of the tower ascending section of the tower body 11b and is configured to be folded in three stages or more in a sequential unfolding direction away from the transmission tower 11, and the unfolding operation is performed according to an operating signal transmitted from the outside. an insulated walkway structure 220 made of an insulating material that temporarily forms the insulated walkway around the transmission tower 11;
A human body detection sensor 230 that is installed on the transmission tower 11 and transmits a human body detection signal to an external receiving target when a human body enters within a predetermined radius centered on the transmission tower 11;
A voice output unit 240 installed in the transmission tower 11 and operating in accordance with a control signal from the outside to guide general pedestrians approaching the transmission tower 11 through the insulated sidewalk structure 220; and
It is installed on the transmission tower 11, and operates the insulated sidewalk structure 220 in an unfolded state according to the transmission of the operation control signal through the worker's smart mobile device 1000, and detects the human body from the human body detection sensor 230. As a detection signal is received, the insulated sidewalk structure 220 is operated in an unfolded state and the control signal is transmitted to the audio output unit 240, comprising a control unit 250 that operates the audio output unit 240. An electric shock prevention system for special high-voltage transmission lines.