KR102320470B1 - Cable leakage detecting system for transformer of apartment house - Google Patents

Abstract

The present invention relates to a cable leakage detecting system connected to a transformer of an apartment house, when a water leakage phenomenon occurs in a transformer installed in an underground substation of the apartment house along a low-voltage cable connected to the low-voltage bushing in the direction of the low-voltage bushing, or when water leaks from the ceiling of the underground substation to the connection part between the low-voltage bushing of the transformer and the low-voltage cable, the information on the facts is transmitted in real time to the management server in the management office of the apartment house, and the leak information is immediately visually delivered, through the sequential automatic control operation of the management server, to the manager of the management office through lighting and thermal image data. The cable leakage detecting system connected to a transformer of an apartment house according to the present invention includes a cabling, a water expansion material, a pressure sensor, a first short-range wireless communication module, a relay communication unit, a management server, a water leak detection display unit, a water drop detection unit, a third short-range wireless communication module and a thermal imaging camera device.

Description

Cable leakage detecting system for transformer of apartment house

According to the present invention, in a transformer installed in an underground substation of an apartment house, water leaks along the low voltage cable connected to the low voltage bushing in the direction of the low voltage bushing, or water falls from the ceiling of the underground substation to the connection part between the low voltage bushing and the low voltage cable of the transformer. When a leak occurs due to a phenomenon, information on the facts is transmitted in real time to the management server in the management room of the apartment house, and the information about the leak is sent to the manager in the management room through sequential automatic control operation of the management server. It relates to a cable leak detection system that is connected to a transformer of indoor electricity for an apartment house so that data can be visually immediately transmitted.

In general, in a multi-family house such as an apartment or officetel, a substation for supplying power to each household is located in the basement, and a transformer is installed in this substation.

1 illustrates an example of a transformer installed in a substation of an apartment house, as shown, the transformer is an enclosure 10 forming a rectangular or cylindrical appearance, and is installed inside the enclosure 10 and supplied It includes a transformation unit 30 that transforms electric power, and a heat dissipation unit 40 that cools the insulating oil 20 that absorbs heat generated during the transformation operation of the transformation unit 30 .

In addition, the enclosure 10 of the transformer is a primary bushing 50 that is electrically connected to supply high-voltage power supplied from the outside to the transformation unit 30, and the low-pressure power transformed in the transformer unit again. It includes a low-pressure bushing 60, which is a secondary bushing electrically connected to be supplied to the outside.

In addition, the transformer includes a plurality of high-voltage power cables 51 electrically connected to the high-voltage bushing 50 so as to receive primary power of high voltage supplied from the outside, and secondary power transformed to a low voltage in the transformer unit 50 . It includes a plurality of low voltage cables 61 electrically connected to the low voltage bushing 60 so as to supply the .

However, as described above, the substation of an apartment house is usually located in the basement, and therefore, the transformer located in the substation in the basement is connected between the low-voltage bushing and the low-voltage cable due to water dripping from the ceiling of the substation or dew condensation due to high humidity in the basement. Leakage may occur in the area.

Korean Patent Registration No. 10-1727007 (2017.04.14. Announcement), “Electrical wiring line structure of public housing” Korean Patent Registration No. 10-1483492 (announced on January 16, 2015), “Insulated switchgear for underground burial” Korea Registered Utility Model No. 20-0440600 (2008.06.19.Announcement), “Basic base for transformer and switchgear”

In an embodiment of the present invention, in a transformer installed in an underground substation of a multi-family house, water leakage occurs along a low-voltage cable connected to the low-voltage bushing in the direction of the low-voltage bushing, or the connection between the low-voltage bushing and the low-voltage cable of the transformer from the ceiling of the underground substation When a water leak occurs due to a partial leak, information about the facts is transmitted to the management server in the management room of the apartment building in real time, and the information about the leak is turned on to the manager of the management room through the sequential automatic control operation of the management server. And it provides a cable leak detection system connected to the transformer of the indoor electricity for the apartment house so that it can be visually immediately transmitted through the thermal image data.

A cable leak detection system connected to a transformer of indoor electricity for an apartment house according to an embodiment of the present invention includes a flexible connection part for opening and closing, and a low-voltage cable connected to a low-voltage bushing of a transformer in an underground substation of an apartment house is inserted. A cable ring detachably coupled to the low voltage cable and having a sensor groove formed on an inner surface thereof, a water expandable material coupled along an inner surface of the cable ring and expanded by water absorption, and installed in the sensor groove, the sensor groove comprises: A pressure sensor for detecting the expansion of the water expandable material, a first short-range wireless communication module installed on the cable ring and transmitting the pressure detection signal of the pressure sensor to an external reception target, and the transformer in the underground substation A second short-range wireless communication module that is installed adjacently and receives the pressure sensing signal of the pressure sensor from the first short-range wireless communication module, and the second short-range wireless communication module receives the pressure sensing signal of the pressure sensor. It may include a relay communication unit including a communication module for transmitting to the management server in the management room of the apartment house, and a water leak detection display unit installed in the management room of the apartment house and operated under the control of the management server.

In addition, the cable leak detection system connected to the transformer of the indoor electricity for the apartment house according to the embodiment of the present invention is installed on the floor surface of the underground substation so as to be located directly below the connection part of the low voltage bushing and the low voltage cable. a detection sensor and a plurality of satellite fall detection sensors installed on the floor surface of the underground substation adjacent to the periphery of the central water fall detection sensor, wherein the central water fall detection sensor and the satellite fall detection sensor set the dormant mode to a basic mode, respectively In one state, it is activated in a sensing mode for detecting falling water under the control of the management server, a plurality of falling water detection units installed for each low-pressure bushing, installed for each falling water detection unit, and a falling water detection signal of the central falling water sensor and a third short-range wireless communication module for receiving the falling water detection signal of the satellite falling water detection sensor and transmitting the falling water detection signal to the second short-range wireless communication module; and a housing in which the relay communication unit is installed; It is installed in the housing to photograph the connection part of the low voltage cable, and according to a control signal of the management server received through the communication module, the low voltage bushings and the connection part of the low voltage cable for each low voltage bushing are photographed after the operation It may further include a thermal imaging camera device for transmitting the photographed data to the management server through the communication module.

In addition, the transformer includes a plurality of the low-pressure bushings, and the cable ring, the water expansion material, the pressure sensor and the first short-range wireless communication module are installed for each of the low-voltage cables connected to the low-voltage bushings, respectively, and the cable ring The sensor groove may be formed in a hemispherical shape.

In addition, the pressure sensor includes a circular plate located at the entrance of the sensor groove and elastically installed so as to have a restoring force when released from the pressure according to the expansion of the water expandable material to measure the pressure applied through the circular plate may be in the form

In the management server, a threshold pressure and a critical time for controlling the operation of the water leak detection display unit, and an operating time of a one-time operation reference for the thermal imaging camera device are set in advance, and a pressure detection signal detected through the pressure sensor the process of determining whether the threshold pressure of The process of outputting a first control signal to the water leak detection display unit when the pressure detection signal reception of the detection sensor continues beyond the threshold time, and the process of outputting a control signal for operation to the falling water detection units through a relay function of the relay communication unit , outputting a control signal for operation to the thermal imaging camera device when a fall detection signal is received from at least one of the falling water detection units and temporarily operating the device for the operating time; outputting a second control signal to the water leakage detection display unit and receiving thermal image data acquired through the thermal imaging camera device through the communication module and outputting the thermal image data to the leak detection display unit.

In addition, the leak detection display unit operates according to the lamp operating according to the first control signal of the management server and the second control signal of the management server to operate the thermal image of the thermal imaging camera device transmitted from the management server The display panel may include a display panel for displaying data in a screen display method in which unit frames are continuous.

According to an embodiment of the present invention, in a transformer installed in an underground substation of an apartment house, water leakage occurs in the low-voltage bushing direction along the low-voltage cable connected to the low-voltage bushing, or the low-voltage bushing and low-voltage cable of the transformer from the ceiling of the underground substation. When a water leak occurs due to the connection between the parts, information about the facts is transmitted to the management server in the management room of the apartment house in real time, and the information about the leak is sent to the manager of the management room through the sequential automatic control operation of the management server. Lighting and thermal imaging data can be visually communicated immediately.

1 is a view illustrating an example of a conventional transformer installed in a substation of an apartment house;
FIG. 2 is a side view illustrating the components installed around the transformer in the underground substation in the cable leak detection system connected to the transformer of the indoor electricity for the apartment house according to an embodiment of the present invention; FIG.
FIG. 3 is a plan view illustrating the configurations installed around the transformer in the underground substation in the cable leak detection system connected to the transformer of the indoor electricity for the apartment house according to an embodiment of the present invention;
4 is a block diagram illustrating an electrical configuration of a cable leak detection system connected to a transformer of indoor electricity for an apartment house according to an embodiment of the present invention;
5 is a flowchart illustrating a control operation of a management server in a cable leak detection system connected to a transformer of indoor electricity for an apartment house according to an embodiment of the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following detailed description of the present invention is an embodiment in which the present invention may be practiced, and reference is made to the accompanying drawings shown by way of example of the embodiment. These embodiments are described in sufficient detail to enable those skilled in the art to practice the present invention. It should be understood that various embodiments of the present invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in relation to one embodiment. In addition, it should be understood that the position or arrangement of individual components in each described embodiment may be changed without departing from the spirit and scope of the present 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, if properly described, is limited only by the appended claims, along with all scopes equivalent to those claimed by the claims. Like reference numerals in the drawings refer to the same or similar functions throughout the various aspects.

The terms used in the present invention have been selected as currently widely used general terms as possible while considering the functions in the present invention, but these may vary depending on the intention or precedent of a person skilled in the art, the emergence of new technology, and the like. In addition, in a specific case, there is a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the corresponding invention. Therefore, the term 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 the name of a simple term.

In the present invention, when a certain part “includes” a certain component in the whole, this means that other components may be further included, rather than excluding other components, unless specifically stated to the contrary. In addition, the “… wealth", "… The term “module” means a unit that processes at least one function or operation, which may be implemented as hardware or software, or a combination of hardware and software.

A cable leak detection system connected to a transformer of indoor electricity for an apartment house according to an embodiment of the present invention will be described with reference to FIGS. 2 to 5 .

FIG. 2 is a side view illustrating the configurations installed around the transformer in the underground substation in the cable leak detection system connected to the transformer of the indoor electricity for the apartment house according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. In the cable leak detection system connected to the transformer of the indoor electricity for the apartment house according to Block diagram illustrating the electrical configuration of the cable leak detection system. And FIG. 5 is a flowchart illustrating the control operation of the management server in the cable leak detection system connected to the transformer of the indoor electricity for the apartment house according to an embodiment of the present invention.

As shown, the cable leak detection system connected to the transformer of the indoor electricity for the apartment house according to an embodiment of the present invention is a cable ring 100, a water expander 200, a pressure sensor 300, a first short-range wireless It is configured to include a communication module 400 , a relay communication unit 500 , a management server 600 , and a leak detection display unit 650 . In addition, the cable leak detection system connected to the transformer of the indoor electricity for the apartment house according to an embodiment of the present invention includes a water fall detection unit 700 , a third short-range wireless communication module 800 , and a thermal imaging camera device 900 . may be included.

The cable ring 100 includes a flexible connection part 110 for opening and closing, and the cable ring 100 is a low voltage cable 1200 connected to the low voltage bushing 1110 of the transformer 1100 in the underground substation 1000 of the apartment house. ) is detachably coupled to the low voltage cable 1200 in the inserted state. And the cable ring 100 is formed with a sensor groove 120 on the inner surface, in this case, the sensor groove 120 may be formed in a hemispherical shape.

The water expandable material 200 is coupled along the inner surface of the cable ring 100 , and the water expandable material 200 is expanded by water absorption. That is, the water expandable material 200 has a property of expanding when water is absorbed. Here, the “water” refers to a liquid state that does not contain moisture in the form of water vapor contained in the air. In other words, the “water” is a concept that encompasses all that can expand the suppurative window material 200 with a liquid including rainwater, water supply, groundwater, and the like. To elaborate, the above “water” does not mean only pure H2O. This will be apparent to those skilled in the art to which the present invention pertains.

And as the material of the water expandable material 200, any material that absorbs water and expands and thus the volume can be increased can be used. For example, as a material of the water expandable material 200, a cellulose-based fiber material such as a natural pulp material, a rayon material, or a mixed material thereof may be used. In this embodiment, the water expandable material 200 was compressed by processing the fiber material of the cellulose component into a nonwoven fabric. be able to

The pressure sensor 300 is installed in the sensor groove 120 of the cable ring 100 to detect the expansion of the water expandable material 200 . And the pressure sensor 300 is located at the inlet of the sensor groove 120 of the cable ring 100 and at the same time a circular plate 310 that is elastically installed to have a restoring force when released from the pressure caused by the expansion of the water expandable material 200. It may be in the form of measuring the pressure according to the expansion of the water expandable material 200 applied through the circular plate 310 accordingly.

The first short-range wireless communication module 400 is installed on the cabling 100, and this first short-range wireless communication module 400 transmits the pressure detection signal of the pressure sensor 300 to an external reception target. do. In other words, the first short-range wireless communication module 400 functions to transmit the pressure detection signal of the pressure sensor 300 to the second short-range wireless communication module 510 of the relay communication unit 500 to be described later.

And the transformer 1100 includes a plurality of low-pressure bushings 1110, and accordingly, the cabling 100, the water expandable material 200, the pressure sensor 300 and the first short-range wireless communication module 400 are low-pressure bushings. Each of the low voltage cables 1200 connected to each of the 1110 is installed.

The relay communication unit 500 is installed adjacent to the transformer 1100 in the underground substation 100 , and the relay communication unit 500 receives the pressure detection signal of the pressure sensor 300 from the first short-range wireless communication module 400 . A communication module for receiving the pressure sensing signal of the pressure sensor 300 from the second short-range wireless communication module 510 and the second short-range wireless communication module 510 and transmitting it to the management server 600 in the management room of the apartment house 520 .

The water leak detection display unit 650 is installed in the management office of the apartment house, and this water leak detection display unit 650 operates under the control of the management server 600, which is further described in connection with the control operation of the management server to be described later. Let's explain.

The water fall detection unit 700 is installed on the bottom surface of the substation room 1000 , and the water drop detection unit 700 is located directly below the connection part of the low voltage bushing 1110 and the low voltage cable 1200 of the transformer 1100 . A central falling water sensor 710 installed on the floor of the substation 1000 so as to be located in the It includes a detection sensor 720 . Also, the central fall sensor 710 and the satellite fall sensor 720 may each be activated in a sensing mode for detecting falling water under the control of the management server 600 in a state in which the dormant mode is set as the basic mode. In addition, the falling water detection unit 700 has a plurality of components installed for each low voltage bushing 1110 of the transformer 1100 .

Also, the central fall sensor 710 and the satellite fall sensor 720 of the fall water detection unit 700 may be implemented in various ways through known technologies within a range that satisfies the conditions for detecting falling water. In other words, the central fall sensor 710 and the satellite fall sensor 720 of the fall water detection unit 700 may be any type of sensing configuration capable of detecting water falling from the air in the underground substation 1000. . For this, reference may be made to the configuration of the rainwater sensor of Korean Patent Registration No. 10-1030144.

The third short-range wireless communication module 800 is installed for each falling water detection unit 700, and the third short-range wireless communication module 800 includes a falling water detection signal from the central falling water sensor 710 and a satellite falling water sensor 720. Receives the falling water detection signal of , and transmits it to the second short-range wireless communication module 510 of the relay communication unit 500 .

The thermal imaging camera device 900 is a type including a housing 910 in which the relay communication unit 500 is installed, and accordingly, the thermal imaging camera device 900 includes the low-pressure bushings 1110 and the low-pressure bushing of the transformer 1100 . It is installed in the housing 910 to photograph the connection part of the low voltage cable 1200 by 1110. And the thermal imaging camera device 900 according to the control signal of the management server 600 received through the communication module 520 of the relay communication unit 500, the low-pressure bushings 1110 and the low-pressure bushings 1110 of the transformer 1100 ) of each low voltage cable 1200 after the shooting operation for the connection portion, and then transmits the shooting data to the management server 600 through the communication module 520 of the relay communication unit (500).

In the management server 600 , a threshold pressure and a threshold time for operation control of the water leak detection display unit 650 and an operation time of one operation reference for the thermal imaging camera device 900 are set in advance. Based on this, the management server 600 determines whether the pressure detection signal detected through the pressure detection sensor 300 exceeds the threshold pressure, and the pressure detection of the pressure detection sensor 300 exceeds the threshold pressure. In the process of determining whether signal reception continues beyond the threshold time, when the pressure detection signal reception of the pressure detection sensor 300 exceeding the threshold pressure continues beyond the threshold time, the leak detection display unit 650 is displayed. 1 A process of outputting a control signal, a process of outputting a control signal for operation through a relay function of the relay communication unit 500 to the falling water detection units 700 , and a process of outputting a falling water detection signal from at least one of the falling water detection units 700 When received, the process of outputting a control signal for operation to the thermal imaging camera device 900 and temporarily operating it for the operating time, the process of outputting a second control signal to the leak detection display unit 650, the thermal imaging camera device 900 ) receives the thermal image data obtained through the communication module 520 of the relay communication unit 500 and outputs the received thermal image data to the leak detection display unit 650 .

When the control operation of the management server 600 is described in detail with reference to FIG. 4 , the management server in step S110, the critical pressure and the critical time for controlling the operation of the leak detection display unit 650, and the thermal imaging camera device 900 The operating time for the operation control of the

In step S120, it is determined whether the received pressure sensing signal of the pressure sensing sensor 300 exceeds the threshold time.

In step (S130), when it is determined that the pressure detection signal of the pressure sensor 300 exceeds the threshold time through step 120, the pressure detection of the pressure detection sensor 300 that exceeds the threshold time in this way It is determined whether the signal exceeds the threshold time.

In step S140 , when it is determined that the pressure detection signal of the pressure sensor 300 exceeds the threshold time through step S130 , a first control signal is output to the water leak detection display unit 650 .

In step S150 , an operation control signal is output to the falling water detection units 700 .

In operation S160 , reception of a falling water detection signal from the at least one falling water detection unit 700 is awaited.

In step S170 , a control signal is output to the thermal imaging camera device 900 .

In step S180 , a second control signal is output to the leak detection display unit 650 .

In step S190 , the thermal image data of the thermal imaging camera device 900 is output to the leak detection display unit 650 .

The leak detection display unit 650 operates according to the second control signal of the lamp 651 and the management server 600 to be turned on according to the first control signal of the management server 600 and transmitted from the management server 600 and a display panel 652 for displaying the thermal image data of the thermal imaging camera device 900 to be displayed in a continuous screen display method of unit frames.

According to the above configuration, in the transformer installed in the underground substation of the apartment house, water leakage occurs along the low-voltage cable connected to the low-voltage bushing in the direction of the low-voltage bushing, or the connection between the low-voltage bushing and the low-voltage cable of the transformer from the ceiling of the underground substation. When a water leak occurs due to a partial leak, information about the facts is transmitted to the management server in the management room of the apartment building in real time, and the information about the leak is turned on to the manager of the management room through the sequential automatic control operation of the management server. and the thermal image data can be visually immediately transmitted.

As described above, in the present description, specific matters such as specific components and limited embodiments and drawings have been described, but these are only provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments No, various modifications and variations are possible from these descriptions by those of ordinary skill in the art to which the present invention pertains.

Therefore, the spirit of the present invention should not be limited to the described embodiments and should not be written, and not only the claims described below, but also all of the claims and all equivalents or equivalent modifications to these claims will fall within the scope of the spirit of the present invention.

100: cabling 110: flexible connection
120: sensor groove 200: water expandable material
300: pressure sensor 310: round plate
400: first short-range wireless communication module 500: relay communication unit
510: second short-range wireless communication module 520: communication module
600: management server 650: leak detection display unit
651: lamp 652: display panel
700: falling water detection unit 710: central falling water detection sensor
720: satellite fall water detection sensor 800: third short-range wireless communication module
900: thermal imaging camera 910: housing
1000: underground substation 1100: transformer
1110: low voltage bushing 1200: low voltage cable

Claims (2)

It includes a flexible connection part 110 for opening and closing, and the low voltage cable 1200 connected to the low voltage bushing 1110 of the transformer 1100 in the underground substation 1000 of the apartment house is inserted into the low voltage cable 1200 in a state in which it is inserted. The cable ring 100 is detachably coupled, and the sensor groove 120 is formed on one surface of the inside;
a water expandable material 200 coupled along an inner surface of the cable ring 100 and expanded by water absorption;
a pressure sensor 300 installed in the sensor groove 120 to detect the expansion of the water expandable material 200;
a first short-range wireless communication module 400 that is installed on the cable ring 100 and transmits the pressure sensing signal of the pressure sensing sensor 300 to an external reception target;
A second short-range wireless communication module 510 that is installed adjacent to the transformer 1100 in the underground substation 100 and receives the pressure detection signal of the pressure sensor 300 from the first short-range wireless communication module 400 . ) and a communication module 520 for receiving the pressure detection signal of the pressure sensor 300 from the second short-range wireless communication module 510 and transmitting it to the management server 600 in the management room of the apartment house. communication unit 500;
A cable leak detection system connected to a transformer of indoor electricity for an apartment house, which is installed in the management room of the apartment house, and includes a leak detection display unit 650 that operates under the control of the management server 600 . The method of claim 1,
The central water drop sensor 710 and the central fall water sensor 710 installed on the floor of the underground substation 1000 so as to be located directly below the connection part of the low pressure bushing 1110 and the low voltage cable 1200. A plurality of satellite fall detection sensors 720 installed on the bottom surface of the substation 1000 so as to be adjacent to the periphery, wherein the central water fall detection sensor 710 and the satellite fall detection sensor 720 are each in a dormant mode a plurality of falling water detecting units 700 that are activated in a sensing mode for detecting falling water under the control of the management server 600 in a basic mode, and installed for each of the low pressure bushings 1110;
It is installed for each of the falling water detection units 700, and receives the falling water detection signal of the central falling water detection sensor 710 and the falling water detection signal of the satellite falling water detection sensor 720 to the second short-range wireless communication module 510. a third short-range wireless communication module 800 for transmitting; and
It includes a housing 910 in which the relay communication unit 500 is installed, and in the housing 910 to photograph the low-pressure bushings 1110 and the connection portion of the low-voltage cable 1200 for each low-pressure bushing 1110. Installed and according to the control signal of the management server 600 received through the communication module 520, the low-pressure bushings 1110 and the low-voltage bushing 1110 for each connection part of the low-voltage cable 1200. Further comprising a thermal imaging camera device 900 for transmitting the photographing data to the management server 600 through the communication module 520 after the photographing operation,
The transformer 1100 includes a plurality of the low-pressure bushings 1110, and the cable ring 100, the water expander 200, the pressure sensor 300 and the first short-range wireless communication module 400 are the low-pressure Each of the low-voltage cables 1200 connected to each of the bushings 1110 are installed,
The sensor groove 120 of the cable ring 100 is formed in a hemispherical shape,
The pressure sensor 300 is located at the entrance of the sensor groove 120 and includes a circular plate 310 that is elastically installed to have a restoring force when released from the pressure caused by the expansion of the water expandable material 200. It is a form of measuring the pressure applied through the circular plate 310,
In the management server 600, a threshold pressure and a critical time for controlling the operation of the water leak detection display unit 650 and an operating time of a one-time operation standard for the thermal imaging camera device 900 are set in advance, and the pressure The process of determining whether the pressure detection signal detected through the detection sensor 300 exceeds the threshold pressure, the pressure detection signal reception of the pressure detection sensor 300 exceeding the threshold pressure exceeds the threshold time The process of determining whether or not it continues, the process of outputting a first control signal to the water leak detection display unit 650 when the reception of the pressure detection signal of the pressure detection sensor 300 exceeding the threshold pressure continues beyond the threshold time , the process of outputting an operation control signal to the falling water detection units 700 through the relay function of the relay communication unit 500. When a falling water detection signal is received from at least one of the falling water detection units 700, the The process of outputting a control signal for operation to the thermal imaging camera device 900 and temporarily operating it for the operating time, the process of outputting a second control signal to the leak detection display unit 650, the thermal imaging camera device 900 performing a control operation including the step of receiving thermal image data obtained through the communication module 520 and outputting it to the leak detection display unit 650;
The water leak detection display unit 650 operates according to the second control signal of the lamp 651 and the management server 600 to be turned on according to the first control signal of the management server 600, and the management server ( 600) connected to a transformer of indoor electricity for apartment houses, characterized in that it includes a display panel 652 that displays the thermal image data of the thermal imaging camera device 900 transmitted from the unit frame in a continuous screen display method. Cable leak detection system.

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