KR102395120B1 - setup method of underground distribution line device with earth leakage protection function - Google Patents

Abstract

The present invention relates to an earth leakage monitoring setup device of an underground transmission line connected to a transformer which comprises the following steps of: selecting an earth leakage monitoring device installation location in the ground; installing the earth leakage monitoring device at the selected location in the ground; and installing an external environment identification unit (1000) around an upper ground where the earth leakage monitoring device is installed so as to identify and detect factors affecting the earth leakage monitoring device.

Description

Set-up method of underground distribution line device with earth leakage protection function of an underground transmission line connected to a transformer

The present invention relates to an optical composite underground transmission and transformation cable (line) monitoring device connected to a transformer. It relates to a method of setting up an earth leakage monitoring device for an underground transmission line that is connected to a transformer that can be installed and managed effectively and stably in consideration of the underground as well as the ground conditions.

A transformer is a component that boosts or steps down the input voltage at a designed ratio, and refers to a device or system used to raise the power generated by a power plant to a voltage suitable for transmission to a destination with little loss or lower it to a voltage suitable for use at the destination. do.
A transmission line is an electric line that sends power of a relatively high voltage level to a specific destination, and a distribution line generally refers to an electric line that distributes or supplies power converted to a level of a relatively low voltage to each corresponding place of use. When a distribution line is collectively referred to as a transmission/distribution line.
It is managed as one of the transmission facilities. In the case of an underground cable, the real-time monitoring system has not been configured due to installation and operating cost problems, and the applicable cable condition monitoring technology is also limited. [0006] Accordingly, until now, the underground transmission cable conducts periodic off-line diagnosis to determine the deterioration state. am. In the case of an underground cable, once a failure occurs, it takes a long time to recover, and it takes a lot of money and time to detect the failure point, which can cause great damage to consumers connected to the underground line. Therefore, countermeasures are required. It is necessary to construct an economical monitoring system in consideration of the transmission line operating environment. In addition, it is necessary to provide an earth leakage monitoring device for underground transmission lines by monitoring and controlling the ground conditions that affect the underground situation.

Korean Patent No. 10-2255638

An object of the present invention is to provide an optical composite underground power transmission and substation cable monitoring device capable of inspecting whether a sensor for detecting the state of an optical composite cable installed underground has a failure at a set period.
In addition, it is possible to provide a method of setting up an earth leakage monitoring device for an underground transmission line that can identify what things are going on or have room to proceed in the ground condition, which is the upper part of the underground, and consider whether it has a negative effect on the earth leakage monitoring device. there is.
In addition, while identifying various factors on the ground affecting the safety devices of underground transmission lines, measuring accurately and precisely in various conditions in various ways, and providing various means for understanding the situation, the stable handling of the means for understanding the situation and It is possible to provide a method for setting up an earth leakage monitoring device for an underground transmission line that enables maintenance operation.
In addition, it is possible to properly establish an installation plan for the underground transmission line safety device and determine the appropriateness of the installation, and to ensure stable management even after installation by thoroughly understanding the impact that may have on the power transmission line safety device underground. It is possible to provide a method for setting up an earth leakage monitoring device of an underground transmission line that can be performed.

The present invention provides a method for setting up an earth leakage monitoring device for an underground power transmission line connected to a transformer, the method comprising: selecting an installation location of the earth leakage monitoring device in the ground; installing the electric leakage monitoring device at a selected location in the underground; and installing an external environment detection unit 1000 around the upper ground where the earth leakage monitoring device is installed to detect and detect factors affecting the earth leakage monitoring device, wherein the earth leakage monitoring device includes the state of the underground transmission line a sensor unit that detects a data collection device for collecting sensing information of the underground power transmission line detected by the sensor unit; an upper server receiving the sensing information from the data collection device and monitoring the state of the underground transmission line based on the sensing information; a control unit for generating at least one operation state information of the operation state of the ventilation equipment and the lighting that is the electric power equipment in the electric power sphere; and a detection unit for detecting whether the sensor unit has failed when a set time has elapsed; The sensor unit may include: a partial discharge detection sensor installed at a predetermined interval on the underground transmission line to detect partial discharge of the underground transmission line; It is installed in the form of an optical cable together with the underground power transmission line, it may include a temperature sensor for sensing the temperature of the underground power transmission line.

According to the present invention as described above, there are one or more of the following effects.
An object of the present invention is to provide an optical composite underground power transmission and substation cable monitoring device capable of inspecting whether a sensor for detecting the state of an optical composite cable installed underground has a failure at a set period.
In addition, it is possible to provide a method of setting up an earth leakage monitoring device for an underground transmission line that can identify what things are going on or have room to proceed in the ground condition, which is the upper part of the underground, and consider whether it has a negative effect on the earth leakage monitoring device. there is.
In addition, while identifying various factors on the ground affecting the safety devices of underground transmission lines, measuring accurately and precisely in various conditions in various ways, and providing various means for understanding the situation, the stable handling of the means for understanding the situation and It is possible to provide a method for setting up an earth leakage monitoring device for an underground transmission line that enables maintenance operation.
In addition, it is possible to properly establish an installation plan for the underground transmission line safety device and determine the appropriateness of the installation, and to ensure stable management even after installation by thoroughly understanding the impact that may have on the power transmission line safety device underground. It is possible to provide a method for setting up an earth leakage monitoring device of an underground transmission line that can be performed.
In addition, based on the structural seismic performance and shock mitigation of the situation identification means itself, it is possible to provide a residual structure to the structure and to ensure the stability of functional operation for situation identification. can

1 is a block diagram showing an optical complex underground power transmission and substation cable monitoring apparatus according to an embodiment of the present invention.
2 is a block diagram illustrating a data collection device of an optical complex underground power transmission and substation cable monitoring device according to an embodiment of the present invention.
3 is a block diagram illustrating a sensing unit of an optical complex underground power transmission and substation cable monitoring apparatus according to an embodiment of the present invention.
4 to 5 are views additionally illustrating the configurations according to FIG. 1 .

Hereinafter, an embodiment of an optical complex underground power transmission and substation cable monitoring apparatus according to the present invention will be described with reference to the accompanying drawings.
In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to intentions or customs of users and operators. Therefore, definitions of these terms should be made based on the content throughout this specification.
1 is a block diagram showing an optical complex underground power transmission and substation cable monitoring apparatus according to an embodiment of the present invention, and FIG. 2 is data collection of the optical complex underground power transmission and substation cable monitoring apparatus according to an embodiment of the present invention. It is a block diagram showing the device, and FIG. 3 is a block diagram showing the sensing unit of the optical complex underground power transmission and substation cable monitoring device according to an embodiment of the present invention. 1 to 3 , the optical complex underground power transmission and substation cable monitoring apparatus according to an embodiment of the present invention includes a sensor unit 100 , a control unit 120 , a data collection device 200 , and an upper server 300 . ) and a sensing unit 700 . The sensor unit 100 monitors the state of the underground power transmission line installed in the electric power sphere and the environment of the electric power sphere. The sensor unit 100 includes a partial discharge detection sensor (PDMS: Partial Discharge Monitoring Sensor: 104) for detecting partial discharge of an underground power transmission line, a temperature sensor for measuring the distribution temperature of an underground transmission line (Temperature Sensor: 102), underground It includes a strain sensor (108) that detects deformation of the transmission line due to external factors, and a water level sensor (submersion sensor: 106) that detects whether the underground transmission line is submerged.
The partial discharge detection sensor 104 detects partial discharge in an underground transmission line, and is installed in a conductor portion of the underground transmission line, and is disposed at various places in the underground transmission line to be monitored at a predetermined interval. Conventionally, partial discharge is monitored only at the connection part of the underground transmission line where partial discharge is likely to occur, but by installing and monitoring the partial discharge monitoring sensor throughout the entire underground transmission line, the reliability of the partial discharge monitoring system can be improved. The temperature sensor 102 may be provided as a sensor in the form of an optical cable to be laid together with an underground power transmission line.
In this case, the sensing of the temperature appears as a continuous distribution throughout the fiber, rather than at any point. The water level sensor 106 is for monitoring whether the underground power transmission line is submerged. ) is included. The control unit 120 detects the operation state of the ventilation equipment and lighting, which are main facilities of the underground power outlet, and the opening/closing state of the door, generates operation state information accordingly, and receives a control signal from the data collection device 200 to control each facility. operation can be controlled.
In addition, when the set period has elapsed, the control unit 120 transmits a driving signal to the monitoring unit 700 to determine whether the sensor unit 100 has malfunctioned by the operation of the monitoring unit 700 . The data collection device 200 collects sensing information of the sensor unit 100 and operation state information of the control unit 120 , and transmits the collected information to the upper server 300 . The data collection device 200 is provided in a plurality of power spheres at predetermined intervals to transmit each position of the sensor unit 100 and the measured sensing information. The data collection device 200 and the sensor unit 100 may communicate at regular time intervals in a sleep & wake up manner. In this case, the data collection device 200 that can always receive power transmits a synchronization packet to the sensor unit 100 , and the sensor included in the sensor unit 100 synchronizes and operates according to the synchronization packet. The sleep time may be set by an operator through the upper server 300 , and the sensor unit 100 receives a synchronization packet after waking up and transmits sensing information to the data collection device 200 .
The upper server 300 may receive the sensing information and operation state information collected by the data collection device 200, and monitor the state of the underground power transmission line and the operation state of the electric power equipment based on the received information. The upper server 300 stores and manages sensing information and operation state information as a database, and provides a monitoring and diagnosis environment of an underground power transmission line using the stored information.
For example, it is possible to monitor whether or not there is a partial discharge of an underground transmission line, provide diagnostic information about the partial discharge to the operator, calculate the transmission capacity of the underground transmission line based on temperature sensing information on the underground transmission line, and provide it to the operator there is. In addition, by using a flood sensor and a water level sensor, it can be used to monitor the possibility of flooding inside the electric power sphere and to take measures against flood damage in advance. That is, the operator may determine whether to inspect and repair the underground transmission line by utilizing the monitoring and diagnosis system of the underground transmission line based on the sensing information received from the data collection device 200 . In addition, based on the operation state information of the electric power equipment received from the control unit 120, it is possible to monitor the operation status of each facility and control the operation. For example, in the case of a ventilation system, if the concentration (ppm) of CO, CO2, H2S, CH4, etc. in the electric power outlet is above a certain level, or operates according to a predetermined time interval, the ventilation system is not If it does not work, it is possible to remotely operate the ventilation system or to determine whether to check and repair the ventilation system.
The upper server 300 generates a control signal for controlling the operation of each facility and transmits it to the control unit 120 through the data collection device 200 to determine whether each facility is operated. The host server acts as a Human Machine Interface (HMI) that provides an interface for the operator to control power facilities. Alternatively, an alarm signal may be output when a failure occurs in the power supply equipment. The alarm signal may be implemented by outputting a warning message on a display screen or transmitting a message to an email or mobile phone of an operator registered in a database.
The data collection device 200 includes a data collection unit 210 , a data transmission unit 220 , a central processing unit 230 , and a power supply unit 240 . The data collection unit 210 is connected to the sensor unit 100 and the control unit 120 to collect sensing information and operation state information, and transmits a control signal received from the upper server 300 to the control unit 120 . carry out In this case, the data collection unit 210 and the sensor unit 100 may perform wired or wireless communication. In the case of performing wired communication, the data collection unit 210 and the sensor unit 100 may be connected by analog signal lines, or RS232, RS422, RS485 type serial communication or Ethernet communication may be used, and when performing wireless communication, Wireless LAN, Zigbee, or Bluetooth can be used.
The data transmitter 220 is connected to the upper server 300 to transmit sensing information and operation state information, and serves to receive a control signal from the upper server 300 . The data transmission unit 220 and the upper server 300 may be connected to a local area network (LAN), and preferably, may be an Ethernet-based TCP/IP protocol. In addition, IEC61850, a standard for communication with substation facilities, can be applied.
The central processing unit 230 stores sensing information and operation state information in a storage unit (not shown), and processes information to be transmitted/received between the data collection unit 210 and the data transmission unit 220 according to a communication standard. The central processing unit 230 generates a synchronization packet, transmits it to the sensor through the data collection unit 210, and collects sensing information according to a sleep & wake up method.
The power supply unit 240 serves to supply power so that each functional unit of the data collection device 200 can operate. At this time, the power supply unit 240 is preferably a rechargeable battery capable of charging and discharging, and when charging the power supply unit 240 , a battery floating charging method may be used. When the data collection device 200 communicates with the sensor unit 100, the control unit 120, or the upper server, it may be affected by the environment of the power sphere, and in particular, it is sensitive to the noise caused by the interference phenomenon with the charging signal of the power supply source. may be exposed. In the case of the floating charging method, since it is possible to charge the power supply through a lower voltage than the equalization charging method, there is an effect that the amount of noise generated in the communication environment can be further reduced than that of the equalization charging method.
In addition, the power supply unit 240 may be charged through a battery power storage system (BESS: Battery Energy Storage System). Battery Energy Storage System (BESS) refers to a facility for storing late-night power using batteries to level the power load during the day, which is relatively higher than at night, and then using it during the day. The battery power storage system can be installed directly in an area requiring power, and in the present invention, it can be installed in a power outlet to supply charging power to the data collection device 200 . The sensing unit 700 includes a first coil 714 wound around a resistor 712 connected to the temperature sensor 102 , and a power supply 710 that supplies current to the first coil 714 to generate heat. ), a discharge detection unit 720 that supplies current to the partial discharge detection sensor 104 to check whether the partial discharge detection sensor 104 is faulty, a light emitting unit 732 and a light receiving unit 734 ) between the light emitting unit 732 and the light receiving unit 734 to determine whether the water level sensor 106 for detecting the water level by , by providing a deformed image to the deformation detection sensor 108 that detects deformation by photographing the outer shape of the underground power transmission line, and includes a deformation detection unit for detecting whether the deformation detection sensor 108 is faulty.
When a driving signal is transmitted after a set period has elapsed from the control unit 120, power is supplied from the power supply 710 to the resistor 712 to generate heat from the first coil 714, and the temperature sensor 102 is overheated. Inspection to detect In addition, it is checked whether the partial discharge detection sensor 104 detects a discharge by supplying a current to the partial discharge detection sensor 104 from the current supply unit 720 according to a driving signal transmitted from the control unit 120 . In addition, according to the driving signal transmitted from the control unit 120, the rod protrudes from the cylinder 730 and advances the translucent panel 736 to the interval between the light emitting unit 732 and the light receiving unit 734, so that in the light emitting unit 732 By delaying the time for the irradiated light to arrive at the light receiving unit 734 , it is inspected whether the water level sensor 106 is malfunctioning. In addition, by transmitting a deformation signal to the deformation detection sensor 108 from the image providing unit according to the driving signal transmitted from the control unit 120, the failure of the deformation detection sensor 108 is checked.
Since the inspection operation as described above is performed, it is possible to determine whether the sensor unit 100 is faulty, so that a safety accident caused by a failure of the sensor unit 100 can determine whether the underground transmission line is being monitored normally. do.
4 to 5 are views additionally illustrating the configurations according to FIG. 1 . 4 to 5 based on the above description, there is provided a method for setting up an earth leakage monitoring device for an underground power transmission line, the method comprising the steps of: selecting an installation location of the earth leakage monitoring device underground; installing the electric leakage monitoring device at a selected location in the underground; and installing the external environment detection unit 1000 around the upper ground on which the earth leakage monitoring device is installed to detect and detect factors affecting the earth leakage monitoring device.
Here, the earth leakage monitoring device includes: a sensor unit for detecting a state of an underground power transmission line; a data collection device for collecting sensing information of the underground power transmission line detected by the sensor unit; an upper server receiving the sensing information from the data collection device and monitoring the state of the underground transmission line based on the sensing information; A control unit for generating at least one operating state information of the operating state of the ventilation equipment and the lighting that is a power facility in the power sphere; and a detection unit configured to detect whether the sensor unit has failed when a set time has elapsed; The sensor unit may include: a partial discharge detection sensor installed at a predetermined interval on the underground transmission line to detect partial discharge of the underground transmission line; It is installed in the form of an optical cable together with the underground transmission line, and includes a temperature sensor for sensing the temperature of the underground transmission line.
In addition, the external environment detection unit 1000 is installed on the main support 1100 and the main support 1100 installed on the ground (SC) above the ground where the earth leakage monitoring device is installed to monitor the surrounding situation. The grasping module 121,131,141 and the first support support 1300 installed opposite to one side of the main support 1100 on the ground (S), and the other side of the main support 1100 on the ground (S) facing the other side installed A second support support 1400, a third support support 1500 installed opposite to the outside of the first support support 1300 on the ground (S), and the second support support (1400) on the ground (S) ) includes a fourth support support 1600 that is installed opposite to the outside.
The first support support 1300 protrudes from the inner wall and is inserted into the main support 1100 to fix the main support 1100, and a first protruding panel 1320 to the inner wall, and the first protruding panel 1320 It is located at an upper portion, protrudes from the inner wall, is inserted into the main support 1100 , fixes the main support 1100 , and includes a second protruding panel 1310 on the inner wall. The second support support 1400 protrudes from the inner wall, is inserted into the main support 1100, fixes the main support 1100, and includes a third protruding panel 1420 and the third protruding panel 1420 on the inner wall. It is located higher, protrudes from the inner wall, is inserted into the main support 1100, fixes the main support 1100, and includes a fourth protruding panel 1410 on the inner wall.
The third support support 1500 is provided on the inner wall and penetrates the first support support 1300 and includes a first through body 1510 that is pressed in contact with the main support 1100, and the first through body ( 1510) is provided with a first downwardly protruding and protruding lower body 1511 to press the upper portion of the first protruding panel 1320, and is provided with a single upper emitting and protruding upper and lower extruded body 1512, the second protruding panel By pressing the lower part of 1310, a fixing force is simultaneously applied between the first protruding panel 1320 and the second protruding panel 1310, and the fourth support support 1600 is provided on the inner wall to provide the second support. It includes a second through-body 1610 penetrating the support 1400 and pressing in contact with the main support 1100 .
The second penetrating body 1610 is provided with a second downwardly emitting and protruding downwardly protruding body 1611 to press the upper portion of the third protruding panel 1420, and the second upwardly emitting and protruding upwardly and downwardly upwardly downwardly emitting and embossed body 1612 is provided. provided and by pressing the lower portion of the fourth protruding panel 1410, a fixing force is simultaneously applied between the third protruding panel 1420 and the fourth protruding panel 1410, the external environment detecting unit 1000 , Connecting between the third support support 1500 and the fourth support support 1600 , but further includes a connector 1710 penetrating the main support 1100 .
Here, the situation understanding module (121, 131, 141) includes the main body (1211, 1311, 1411) connected to the main support (1100), and the photographing body (1212, 1312, 1212, 1312, 1412) and an independent vehicle 1213, 1313, 1413 seated on the upper part of the main body 1211, 1311, 1411, wherein the independent vehicle 1213, 1313, 1413 is the main body 1211, 1311, 1411 The charging is performed through the charging unit 1240 installed on the main body 1211 , 1311 , and 1411 while being seated on the body 1211 , 1311 , and 1411 .
The situation understanding module (121, 131, 141) includes a first situation understanding module 121 at the top, a second situation understanding module 131 at the bottom, the first situation understanding module 121 and the second situation understanding module ( 131) and a third situation understanding module 141 provided between.
The lower portion of the second photographing body 1312 is supported through a second interlocking support installed in the fourth support support 1600 and the third photographing body 1412 which is a photographing body of the third situation understanding module 141 . ) is supported through the third interlocking support body installed on the third support support (1500),
The first interlocking support body includes a first vertical plate 1811 installed on the second photographing body 1312 and a first guide piece 1813 installed on the first vertical plate 1811 in the center. and a first horizontal plate 1812 mounted on the first photographing body 1212 through the second interlocking support body, a second vertical plate 1911 installed on the third support support 1500 and a second horizontal plate 1912 installed on the second vertical plate 1911 and mounted on the third photographing body 1412 through a second guide piece in the center.
Here, the third interlocking support body, a third vertical plate 2011 installed on the fourth support support 1600, and a third guide piece 2012 installed on top of the third vertical plate 2011 in the center ) through a third horizontal plate 2013 mounted on the second photographing body 1312, and the first guide piece 1813 to the third guide piece 2012 are rotated through the first The photographing body 1212 to the third photographing object 1412 are fixed. It further includes an external module for operating the situation detection module (121, 131, 141) in a limited state while protecting the exposure to the external environment.
The external module includes a first outer body 2110 installed to be located on the outside of the third support support 1500 on the ground, and an upper portion of the first outer body 2110 to determine the situation. A first protective panel 2120 installed to surround at least a portion of (121,131,141), a second outer body 3110 installed to be positioned outside the fourth support support 1600 on the ground, and the second A second protection panel 3120 installed above the outer body 3110 to surround the situation detection module 121,131,141, and a first closing panel 2130 installed on the first protection panel 2120. and a second closing panel 3130 installed on the second protective panel 3120 . The first closing panel 2130 is provided with an opening and closing panel 2131 that is opened and closed by reciprocating from the inside toward the second closing panel 3130, and the independent aircraft 1213, 1313, and 1413 are the opening and closing panels ( 2131) to the outside and photographing the external situation, and through the opening and closing of the opening/closing panel 2131, the situation understanding modules 121, 131, and 141 minimize exposure from the external environment for a set period and as necessary.
On the other hand, a first cochlear interlocking module is provided on the outside of the first concave body 2110, and the first outer interlocking module is, the first lower level driving unit 4110 installed on the ground (S) and the first lower level A first upper driving unit 4120 provided as an upper portion of the driving unit 4110, and the first outer body 2110 and the third support support 1500 from the first upper driving unit 4120, passing through the first A first interlocking body 4130 that is inserted and mounted on the support support 1100, and a second concave interlocking module are provided on the outside of the second concave body 3110.
The second outer interlocking module includes a second lower floor driving unit 5110 installed on the ground (S), a second upper floor driving unit 5120 provided above the second lower driving unit 5110, and the second and a second interlocking body 5130 inserted and mounted on the second support support through the second concave body and the fourth support support from the upper driving part 5120 .
Here, the first interlocking body 4130 and the second interlocking body 5130 are axially rotated on the first upper driving part 4120 and the second upper driving part 5120, respectively, and the first support support 1300 and The second support support 1400 is fixed. The first upper driving part 4120 and the second upper driving part 5120 are moved back and forth in the first lower driving part 4110 and the second lower driving part 5110, respectively, and based on the forward and backward movement, the first The interlocking body 4130 and the second interlocking body 5130 are fixed by pushing the first support support 1300 and the second support support 1400, respectively.
The driving method of the physical components described above is based on a motor, an actuator, etc., and the forward and backward movement and rotational movement are made, and the shape and size of each component can be variously selected and provided according to the installation site and materials to be implemented. . Although the present invention has been described with reference to the embodiment shown in the drawings, which is merely exemplary, it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. Accordingly, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

100: sensor unit 120: control unit
200: data collection device 210: data collection unit
220: data transmission unit 230: central processing unit

Claims (3)

Installed at a selected location in the underground, the external environment detection unit 1000 is installed around the upper ground (SC) where the earth leakage monitoring device is installed, and the underground power transmission line connected to the transformer in which the factors affecting the earth leakage monitoring device are identified. As an earth leakage monitoring device,
A sensor unit for detecting the state of the underground power transmission line; a data collection device for collecting sensing information of the underground power transmission line detected by the sensor unit; an upper server receiving the sensing information from the data collection device and monitoring a state of an underground power transmission line based on the sensing information; A control unit for generating at least one operating state information of the operating state of the ventilation equipment and the lighting that is a power facility in the power sphere; and a detection unit configured to detect whether the sensor unit has failed when a set time has elapsed; The sensor unit may include: a partial discharge detection sensor installed at a predetermined interval on the underground transmission line to detect partial discharge of the underground transmission line; It is installed in the form of an optical cable together with the underground transmission line and includes a temperature sensor for sensing the temperature of the underground transmission line,
The external environment detection unit 1000,
The main support 1100 installed on the ground and
Situation understanding modules (121, 131, 141) installed on the upper part of the main support (1100) to monitor the surrounding situation,
A first support support 1300 installed opposite to one side of the main support 1100,
a second support support 1400 installed opposite to the other side of the main support 1100;
and a third support support 1500 installed opposite to the outside of the first support support 1300 on the ground;
and a fourth support support 1600 installed opposite to the outside of the second support support 1400 on the ground;
The first support support 1300 is,
It protrudes from the inner wall, is inserted into the main support 1100, fixes the main support 1100, and a first protruding panel 1320 on the inner wall;
It is located above the first protruding panel 1320, protrudes from the inner wall, is inserted into the main support 1100, fixes the main support 1100, and includes a second protruding panel 1310 on the inner wall,
The second support support 1400 is,
It protrudes from the inner wall, is inserted into the main support 1100, fixes the main support 1100, and a third protruding panel 1420 on the inner wall;
It is located above the third protruding panel 1420, protrudes from the inner wall, is inserted into the main support 1100, fixes the main support 1100, and includes a fourth protruding panel 1410 on the inner wall,
The third support support 1500 includes a first through body 1510 that is provided on the inner wall, penetrates the first support support 1300 and presses in contact with the main support 1100,
The first through body 1510 is
A first downwardly projecting and projecting body 1511 protruding downward is provided to press the upper portion of the first projecting panel 1320,
A first upper emitting and protruding body 1512 protruding upwards is provided, and by pressing the lower portion of the second protruding panel 1310, a fixing force between the first protruding panel 1320 and the second protruding panel 1310 is applied. applied at the same time,
The fourth support support 1600 includes a second through-body 1610 that is provided on the inner wall, penetrates the second support support 1400 and presses in contact with the main support 1100,
The second through body 1610 is
A second downwardly projecting and projecting body 1611 protruding downward is provided to press the upper portion of the third projecting panel 1420,
A second upper emitting and protruding body 1612 protruding and protruding upward is provided, and by pressing the lower portion of the fourth protruding panel 1410, a fixing force between the third protruding panel 1420 and the fourth protruding panel 1410 is applied. at the same time, but
The external environment detection unit 1000,
Connecting between the third support support 1500 and the fourth support support 1600, but further comprising a connector 1710 penetrating the main support 1100,
The situation understanding module (121, 131, 141) is.
The main body 1211, 1311, 1411 connected to the main support 1100, the photographing body 1212, 1312, 1412 installed at the front end of the main body 1211, 1311, 1411, the main body 1211, 1311, 1411) including independent flying vehicles (1213, 1313, 1413) seated on the upper part,
The independent flying vehicle (1213, 1313, 1413) is seated on the main body (1211, 1311, 1411) and is charged through the charging unit 1240 installed on the main body (1211, 1311, 1411), but in a flying or seated state Each shooting is performed separately in
The situation understanding module (121, 131, 141) includes a first situation understanding module 121 at the top, a second situation understanding module 131 at the bottom, the first situation understanding module 121 and the second situation understanding module ( 131) including a third situation understanding module 141 provided between,
The first situation detection module 121 and the second situation identification module 131 are installed to face each other in the vertical direction,
The first photographing body 1212, which is the photographing body of the first situation understanding module 121, is supported through the first interlocking support body installed on the second photographing body 1312 which is the photographing body of the second situation detection module 131. becomes,
The lower portion of the second photographing body 1312 is supported through a second interlocking support installed in the fourth support support 1600, and a third photographing body ( 1412) is supported through the third interlocking support body installed in the third support support (1500),
The first interlocking support body includes a first vertical plate 1811 installed on the second photographing body 1312 and a first guide piece 1813 installed on the first vertical plate 1811 in the center. An earth leakage monitoring device of an underground power transmission line connected to a transformer including a first horizontal plate 1812 mounted on the first photographing body 1212 through the . delete delete

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