KR20220039039A - Apparatus for detecting surge and leakage current, and current detecting system - Google Patents

Abstract

The present invention provides a contactless apparatus for detecting a surge and leakage current that does not impose a load on a down conductor of a lightning arrester, is simply connected to the lightning arrester during working on the ground such as an electric pole and the like, and remotely monitors an explosion of a disconnecting switch caused by deterioration to improve maintenance efficiency of the lightning arrester. According to the present invention, the apparatus receives serge current information and leakage current information in real time to predict a fault occurrence caused by lightning of a power facility and other electric apparatuses and immediately checks the explosion of the disconnecting switch of the lightning arrester to enhance efficiency for managing the lightning arrester.

Description

Surge and leakage current detection device and current detection system comprising same

The present invention relates to a surge and leakage current sensing device, and a current sensing system including the same, and more particularly, connected to a lightning arrester installed on a pole and other electrical devices supporting a line to detect surge and leakage current caused by lightning. It relates to a non-contact surge and leakage current sensing device capable of monitoring the status of lines, other electrical devices and arresters, and a current sensing system including the same.

In general, due to surge caused by lightning, failures occur in lines and other electrical devices, and in order to prevent such failures, a lightning arrester for discharging the surge caused by lightning in distribution lines and other electric devices to the ground and blocking the rapid current may be connected to other structures such as electric poles. The lightning arrester may be installed in the inlet and outlet of overhead wires of power plants and substations, inlets of receiving places supplied from overhead wires, and the like.

Also, in general, arresters are divided into gap-type arresters and gapless-type arresters, and a series gap is attached to the gapless arresters. The gap type arrester does not discharge in the normal state and maintains the insulation state, but in the event of an abnormal voltage caused by lightning, it rapidly discharges these surges to the ground and at the same time blocks the rapid flow and non-linearity with respect to current and voltage. A characteristic element (made of silicon carbide) that forms the body of the lightning arrester and has a small limiting voltage for large currents can be composed of

The gapless type arrester is made of only characteristic elements using zinc oxide as a non-linear resistor. There is no series gap, so there is no discharge characteristic and anti-fouling characteristic. It is being used a lot. However, since the gapless type arrester has a risk of a ground fault when the characteristic element deteriorates, a disconnector is formed between the lower part of the arrester and the down-conductor, and the disconnector explodes when the characteristic element deteriorates to prevent a ground fault accident. However, there is an inconvenience in that the arrester manager must visually identify the arrester and replace the arrester.

In relation to a surge detection device related to the maintenance of such an arrester, there is a digital lightning and surge counter disclosed in Korean Patent Laid-Open Publication No. 10-2011-0101266. The prior art is provided with a sensor unit configuring a closed loop by wrapping the torpedo-down conductor of the lightning arrester with a Rogowski coil in order to detect and transmit lightning detection information such as whether or not there is a lightning strike, the number of lightning strikes, the date and time, and the magnitude of the surge current, and transmit it to the management server. However, there are problems in that it is difficult to fix the Rogowski coil in an environment in which the down-conductor of the arrester is not fixed, and the down-conductor falls off from the bottom of the arrester as a load is applied to the down-conductor.

Republic of Korea Patent Publication No. 10-2011-0101266

The embodiment is to overcome the above-mentioned problems, and the present invention has been devised to solve the above-mentioned problems. The object of the present invention is not to apply a load to the down-conductor of the arrester, and to simplify the operation at high altitudes such as electric poles. The purpose of this invention is to provide a non-contact surge and leakage current sensing device that can improve the efficiency of maintenance of the arrester by remotely monitoring the explosion of the disconnector due to deterioration while being connected to the arrester.

In addition, in order to model the occurrence of failures such as flashover failure due to lightning in power transmission and distribution lines and use it as a performance indicator for lightning resistance design, information about lightning strikes caused by lightning of power transmission and distribution lines in operation is transferred to a remote management server. It is intended to provide a non-contact surge and leakage current sensing device capable of transmitting.

The technical problems to be achieved by the embodiment are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those of ordinary skill in the art from the description of the embodiment.

In order to solve the above problems, a current sensing device according to an embodiment of the present invention includes a fixing bracket connected to a lightning arrester connected to a down-conductor, and a housing coupled to the fixing bracket and arranged with a first interval from the conductor. wherein the fixing bracket includes a hinge and includes first and second tongs formed to surround the body of the arrester around the hinge, and the housing detects a surge current flowing through the down-conductor during a lightning strike. It includes a first sensor that

In addition, in the current sensing device according to the embodiment, the first sensor is disposed with the first gap from the down-conducting wire.

In addition, in the current sensing device according to the embodiment, the housing further includes a second sensor included in the fixing bracket and detecting a leakage current of the lightning arrester.

In addition, in the current sensing device according to the embodiment, the fixing bracket is configured to rotate the housing in a state coupled to the arrester.

In addition, the first tongs of the current sensing device according to the embodiment include a housing connector coupled to the housing, and one surface of the housing includes a screw fastening hole, and the screw fastening hole and the housing connecting part are coupled with a screw. do.

In addition, in the current sensing device according to the embodiment, the first tongs and the second tongs are formed in the same shape as the body shape of the arrester so as to surround the body of the arrester.

In addition, in the current sensing device according to the embodiment, the lower surface of the housing includes an extension surface extending from one surface of the housing, the screw fastening hole is included in the extension surface, and the housing connection part is the extension surface and the screw is fastened to the screw fastening hole in a state in which the screw fastening hole is in contact, thereby being coupled to the housing.

In addition, in the current sensing device according to the embodiment, the lightning arrester includes: a body; a disconnector disposed at a lower portion of the body; and a down-conductor terminal connected to the down-conductor, wherein an insulating hanger is connected to an upper portion of the disconnector.

In addition, by using the output signal of the first sensor and the output signal of the second sensor of the current sensing device according to the embodiment, the surge current information and leakage current information are generated, and the generated, the surge current information and leakage It further includes a control unit for transmitting the current information to the management server.

In addition, the first sensor of the current sensing device according to the embodiment is a magnetic sensor, the second sensor is a current transformer, and the control unit, when the detected leakage current is not measured for a preset time, that the disconnector has exploded judge

In addition, the fixing bracket of the current sensing device according to the embodiment includes a hinge, the fixing bracket is composed of first tongs and second tongs, and the first tongs and the second tongs are formed using the hinge. coupled, and the fixing bracket is connected to the lightning arrester using the first and second tongs.

In addition, a current sensing system according to another embodiment includes a current sensing device, and the current sensing device includes: a fixing bracket connected to a lightning arrester connected to a down-conductor; and a housing coupled to the fixing bracket and disposed at a first interval from the conducting wire, wherein the fixing bracket includes a hinge and a first tong and a second tong formed to surround the body of the lightning arrester around the hinge. Including, the housing includes a first sensor for detecting a surge current flowing in the down-conductor when lightning strikes.

In addition, the first sensor of the current sensing system according to another embodiment is disposed with the first gap from the down-conducting wire.

In addition, the housing of the current sensing system according to another embodiment further includes a second sensor included in the fixing bracket and detecting the leakage current of the lightning arrester.

In addition, the fixing bracket of the current sensing system according to another embodiment is configured to rotate the housing in a state coupled to the arrester.

In addition, the first tongs of the current sensing system according to another embodiment include a housing connection part coupled to the housing, and a screw fastening hole is included on one surface of the housing, and the screw fastening hole and the housing connection part are screwed. are combined

In addition, the first tongs and the second tongs of the current sensing system according to another embodiment are formed in the same shape as the body shape of the arrester so as to surround the body of the arrester.

In addition, the bottom surface of the housing of the current sensing system according to another embodiment includes an extension surface extending from one surface of the housing, the screw fastening hole is included in the extension surface, the housing connection portion, the extension surface and the screw is fastened to the screw fastening hole in a state in which the screw fastening hole is in contact, thereby being coupled to the housing.

In addition, the lightning arrester of the current sensing system according to another embodiment includes a body; a disconnector disposed at a lower portion of the body; and a down-conductor terminal connected to the down-conductor, wherein an insulating hanger is connected to an upper portion of the disconnector.

In addition, by using the output signal of the first sensor and the output signal of the second sensor of the current sensing system according to another embodiment, to generate surge current information and leakage current information, the generated, the surge current information and leakage It further includes a control unit for transmitting the current information to the management server.

In addition, the first sensor of the current sensing system according to another embodiment is a magnetic sensor, the second sensor is a current transformer, and the controller, when the detected leakage current is not measured for a preset time, the disconnector explodes judge that it did

In addition, the fixing bracket of the current sensing system according to another embodiment includes a hinge, the fixing bracket includes first and second tongs, and the first and second tongs use the hinge. to be coupled, and the fixing bracket is connected to the lightning arrester using the first and second tongs.

According to the present invention as described above, it is possible to efficiently manage electrical transmission facilities and other electrical devices by evaluating lightning resistance design performance by utilizing lightning information on power transmission/distribution lines and other electrical devices.

In addition, the manager can immediately check the condition and explosion of the disconnector due to the deterioration of the arrester from a remote location and then replace it. That is, there is no need to visually check the arrester in the area where the arrester is installed, so the management of the arrester can be performed efficiently. , this can further fundamentally prevent the failure of the electrical transmission equipment due to the unattended lightning arrester whose disconnector has exploded.

1 is a block diagram showing the configuration of a current sensing system according to an embodiment of the present invention.
2 is a perspective view of a non-contact surge and leakage current sensing device according to an embodiment of the present invention.
3 is an assembly view of a non-contact surge and leakage current sensing device according to an embodiment of the present invention.
4 is a block diagram illustrating a configuration of a non-contact surge and leakage current sensing device included in a current sensing system according to an embodiment of the present invention.
5A and 5B are diagrams illustrating a state in which a non-contact surge and leakage current sensing device is fixed to an arrester according to an embodiment of the present invention.

Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar reference numerals are assigned to the same or similar components, and overlapping descriptions thereof will be omitted. The suffixes "module" and "part" for components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have distinct meanings or roles by themselves. In addition, in describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical spirit disclosed in the present specification is not limited by the accompanying drawings, and all changes included in the spirit and scope of the embodiments; It should be understood to include equivalents and substitutes.

Terms including an ordinal number such as 1st, 2nd, etc. may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When an element is referred to as being “connected” or “connected” to another element, it is understood that it may be directly connected or connected to the other element, but other elements may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as “comprises” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, a surge and leakage current sensing device and a current sensing system including the same according to a preferred embodiment of the present invention will be described in detail with reference to the drawings.

1 is a block diagram showing the configuration of a current sensing system according to an embodiment of the present invention.

2 is a perspective view of a non-contact surge and leakage current sensing device according to an embodiment of the present invention.

3 is an assembly view of a non-contact surge and leakage current sensing device according to an embodiment of the present invention.

5A and 5B are diagrams illustrating a state in which a non-contact surge and leakage current sensing device is fixed to an arrester according to an embodiment of the present invention.

1 is a block diagram showing the configuration of a current sensing system according to an embodiment of the present invention.

Referring to FIG. 1 , the current sensing system 1 according to the embodiment includes a surge and leakage current sensing device 1000 and a management server 2000 .

The surge and leakage current sensing device 1000 is coupled to the lightning arrester 400 (see FIG. 4A) and stores the surge current information flowing through the lightning arrester 400 during lightning strikes and the leakage current information that normally flows through the lightning arrester 400 at a remote location to the management server ( 2000) can be transmitted.

The management server 2000 receives the surge current information and generates and manages lightning detection information such as whether there is a lightning strike on the electrical system device of the corresponding lightning arrester 400, the number of lightning strikes, the date and time, and the size of the surge current, thereby designing lightning resistance according to the lightning strike. It can be used as data. In addition, the management server 2000 receives leakage current information on the arrester 400 and monitors the deterioration state of the arrester 400 to immediately grasp the state of the arrester 400 and information on the management of the arrester 400 . can provide

2 and 3 , the surge and leakage current sensing device 1000 detects a surge current during lightning strike and transmits the surge current information to the management server 2000 through wired and/or wireless communication (100) and a fixing bracket 200 connecting the housing 100 to the lightning arrester 400 .

The fixing bracket 200 includes a hinge 220 including a spring. The fixing bracket 200 includes a first tongs 211 and a second tongs 212 . The first tongs 211 and the second tongs 212 are connected to each other and formed to surround the body of the lightning arrester 400 around the hinge 220 . For example, one end of the first tongs 211 and one end of the second tongs 212 are coupled through a hinge 220 , and the first tongs 211 and the second tongs 212 are the body of the lightning arrester 400 . It may be formed in the same shape as the body shape of the lightning arrester 400 so as to surround it.

The first tongs 211 include an enclosure connection part 250 . The first tongs 211 may be coupled to the housing 100 through the housing connection part 250 . For example, the housing connection part 250 includes an extension surface 252 extending from one surface of the housing 100 , and includes two screw fastening holes 251 in the extension surface 252 . As the screw 251a is fastened to the two screw fastening holes 251 in a state where the housing connection part 250 and the extension surface 252 are in contact with each other, the first tongs 211 and the housing 100 are coupled.

In the housing 100 , the solar cell 300 may be formed on one surface of the case. Electricity generated from the solar cell 300 may be charged in a battery 170 (refer to FIG. 3 ) and used as a power source. The assembly 100 has a ring formed on one side, one side is connected to the ring, and the other side is connected to a hook that can be fastened to a part of the arrester 400 through a safety line connected to the fixing bracket 200 and the arrester 400. When separated from, it is possible to prevent the housing 100 from falling down. The housing 100 may be formed in a completely sealed type to perform a waterproof and dustproof function that can fundamentally block the inflow of dirt and moisture.

5A and 5B, the lightning arrester 400 has a circular body 10 for accommodating a series gap and a characteristic element, a disconnector 30 and a down-conductor terminal 20 connected to the down-conductor 21 at the lower part of the body. ) is formed, and an insulating hanger 40 is connected to the upper part of the disconnector 30, and the insulating hanger 40 is a clamp (not shown) for installing the arrester 400 on a fixed frame connected to an electric pole and can be connected

The insulating hanger 40 may be fixed to the arrester 400 body 10 by the insulating hanger fixing plate 41 . An insulating material such as a polymer may be wrapped around the outside of the body 10 , and disk-shaped insulating insulators 12 may be formed at regular intervals.

In the surge and leakage current sensing device 1000 , a clamp-shaped fixing bracket 200 capable of enclosing the circular body 10 may be connected to the circular body between the insulating insulator 12 and the insulating hanger fixing plate 41 .

For convenience of explanation, it has been described that the fixing bracket 200 is connected between the insulating insulator 12 and the insulating hanger fixing plate 41, but the embodiment is not limited thereto, and the insulating insulator ( 12) By connecting to any one insulator groove 11 formed between them, it can be connected to the lightning arrester 400 simply.

When the lightning arrester 400 is installed on a pole, etc., the work space is insufficient as it works at a height of several meters from the ground, and the operator must wear an electric shock prevention glove to prevent an electric shock accident. You will find yourself in a difficult working environment. In the surge and leakage current sensing device 1000 of the present invention, the operator spreads the first tongs 211 and the second tongs 212 of the fixing bracket 200, and then wraps the circular body of the insulator groove 11. It can be simply fastened to the lightning arrester 400 with Therefore, it is possible to improve the work efficiency and safety of the operator.

Therefore, in the prior art, the method of wrapping the down-conductor connected to the down-conductor terminal at the bottom of the arrester in order to detect the surge current of the arrester during lightning imposes an unnecessary load on the down-conductor, and the problem of falling off from the down-conductor terminal by this load there was

However, it will be said that the present invention can fundamentally solve these problems. In addition, since the housing 100 is connected to a part of the clamp of the lightning arrester 400 through a hook, even if the fixing bracket 200 is separated from the circular body 10, it is hung on the electric pole by a safety line, so that the housing 100 may fall risk of falling can be minimized.

4 is a block diagram showing the configuration of a non-contact surge and leakage current sensing device included in the current sensing system according to an embodiment of the present invention.

The surge and leakage current sensing apparatus 1000 is included in the current sensing system according to the embodiment. The surge and leakage current sensing apparatus 1000 may include a first current sensor 110 , a second current sensor 120 , amplifiers 112 and 121 , a communication unit 160 , and a control unit 150 .

The first current sensor 110 senses a surge current during lightning strike. The second current sensor 120 detects a leakage current that normally flows through the lightning arrester 400 . The amplifiers 112 and 121 amplify the sensing current of the first current sensor 110 and the sensing current of the second current sensor 120 , respectively.

The first current sensor 110 can measure the surge current in a non-contact manner with the down-conducting wire 21 and the first dimension d by being mounted inside the housing 100 . Accordingly, the surge and leakage current sensing device does not apply a separate load to the down-conductor 21 . The first current sensor 110 may be a magnetic sensor (MR sensor), Hall element, giant magneto-resistance (GMR), tunneling magneto-resistance (TMR: Tunneling Magneto-Resistance), anisotropic magnetoresistance (AMR) : Anisotropic Magneto-Resistance).

When lightning strikes the arrester 400, a surge current flows in the down-conductor 21 as the abnormal voltage generated in the arrester 400 is discharged to the ground, and a magnetic field around the down-conductor 21 due to this surge current is formed The first current sensor 110 may be a magnetic sensor in the form of a semiconductor chip mounted on a PCB substrate inside the housing 100 . The first current sensor 110 outputs a surge voltage value according to a change in a magnetic field due to a surge current flowing through the down-conductor 21 during lightning strike, and the surge voltage value is input to the controller through the amplifier 112 .

The first current sensor 110 may be a magnetic sensor. Therefore, an error may occur in the measurement of the surge current of the first current sensor 110 due to the location of the enclosure connected through the fixing bracket 200 and surrounding structures.

The fixing bracket 200 has a structure that surrounds the circular body of the arrester 400 in a concave tongs shape, and is configured to rotate the housing 100 while the fixing bracket 200 is coupled to the arrester 400 .

Therefore, when the enclosure 100 is connected to the arrester 400, the surge current measurement error can be minimized by changing the position of the enclosure 100 by freely rotating the enclosure in consideration of the measurement environment.

The second current sensor 120 is a current transformer (CT) for detecting a leakage current according to deterioration of the lightning arrester 400 , and may be formed inside the fixing bracket 200 . When the second current sensor 120 is located inside the fixing bracket 200, the coil is wound around the magnetic core and the leakage voltage value according to the current induced in the coil by the leakage current flowing inside the circular body of the arrester 400 is amplified. (121) is output.

The communication unit 160 transmits the detected surge current information and leakage current information to the management server 2000 through wireless communication.

The control unit 150 processes the signals input from the first current sensor 110 and the second current sensor 120 to generate surge current information and leakage current information, and transmits it to the management server 2000 through the communication unit 160 . control to do The controller 150 controls to store the electrical signal input through the solar cell 300 in the battery 170 . The controller 150 may control to supply electricity from the battery 170 to each electronic device. The controller 150 may be formed of a microcontroller, and may control the overall operation of the surge and leakage current sensing apparatus 1000 .

The controller 150 receives the surge voltage value and generates a surge voltage value that is an analog signal as a digital signal surge voltage value using an analog-to-digital converter. The controller 150 may generate surge current information by matching a surge current value according to a surge voltage value preset in a memory (not shown) with the generated surge voltage value.

The controller 150 may control to generate surge current information including the measured surge current magnitude and number of times, measurement date, time, etc., and transmit it to the management server 2000 through the communication unit 160 .

On the other hand, when the surge voltage value output from the amplifier 112 is input to the comparator 113 and is greater than the surge measurement reference voltage value preset in the comparator, the comparator 113 notifies the lightning arrester 400 that lightning strikes. The signal is output to the control unit, and the control unit 150 receiving the notification signal may control to switch from the sleep mode to the normal mode.

The control unit 150 receives the leakage voltage value and generates a leakage voltage value, which is an analog signal, as a leakage voltage value, which is a digital signal, using an analog-to-digital converter, and leaks according to a leakage voltage value preset in a memory (not shown). It can be generated as leakage current information by matching the current value.

The controller 150 may determine the degree of deterioration as appropriate or unsuitable by comparing the deterioration reference information stored in advance in the memory (not shown) with the currently measured leakage current. Since the leakage current of the lightning arrester 400 is several hundred mA to several mA, the current transformer of the second current sensor may be designed to measure it.

When the leakage current value measured with a predetermined period is not measured for a predetermined time (when the leakage current value is '0' for a predetermined time), the disconnector 30 is activated according to the thermal runaway phenomenon. It is determined that there is an explosion, and the disconnector 30 can generate explosion information. The control unit 150 generates leakage current information including the measured leakage current size and number of times, measurement date, time, deterioration state information and disconnector 30 explosion information, and the like, and manages it through the communication unit 160 through the management server ( 2000) can be controlled.

Although it has been described that the controller 150 transmits the surge current information including the surge current size and the leakage current information including the leakage current size to the management server 2000 through the communication unit 160 , the embodiment is not limited thereto. 150 transmits the surge current value and the leakage current value to the management server 2000 through the communication unit 160, and the management server 2000 uses the received surge current value and leakage current value to manage the power system and It is possible to create and manage information on the management of the lightning arrester 400 .

Accordingly, the management server 2000 may receive the surge current information and the leakage current information in real time from the surge and leakage current sensing device 1000 , and may predict the occurrence of a failure due to a lightning strike to power facilities and other electrical devices. By immediately checking the explosion of the disconnector 30 of the arrester 400 , the efficiency of the management of the arrester 400 can be improved.

Although the embodiment of the embodiment has been described in detail above, the scope of the embodiment is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the embodiment as defined in the claims below are also included in the scope of the embodiment. will be.

Accordingly, the foregoing detailed description should not be construed as limiting in all respects but should be considered as illustrative. The scope of the embodiments should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the embodiments are included in the scope of the embodiments.

1: Current sensing system
100: housing 110: first current sensor
120: second current sensor
112,121: amplifier 113: comparator
150: control unit 160: communication unit
170: battery 200: fixing bracket
211, 212: clamp 220: hinge
250: housing connection unit 251: fastening hole
251a: screw 300: solar cell
400: arrester 1000: surge and leakage current detection device
2000: Management Server

Claims (22)

a fixing bracket connected to the arrester connected to the down-conductor;
The enclosure is coupled to the fixing bracket and disposed at a first gap with the conducting wire
includes,
The fixing bracket includes a hinge and includes first and second tongs formed to surround the body of the arrester around the hinge,
The housing includes a first sensor for detecting a surge current flowing in the down-conductor when lightning strikes, a current sensing device. According to claim 1,
The first sensor is disposed to have the first gap with the down-conductor, the current sensing device. 3. The method of claim 2,
The enclosure is
A second sensor included in the fixing bracket and detecting the leakage current of the arrester
Further comprising, a current sensing device. 4. The method of claim 3,
The fixing bracket is configured to rotate the housing in a state coupled to the arrester, the current sensing device. 5. The method of claim 4,
The first tongs include a housing connection portion coupled to the housing,
One surface of the housing includes a screw fastening hole,
A current sensing device in which the screw fastening hole and the housing connection part are coupled with a screw. 6. The method of claim 5,
The first tongs and the second tongs are formed in the same shape as the body shape of the arrester so as to surround the body of the arrester, the current sensing device. 7. The method of claim 6,
The bottom surface of the housing includes an extended surface extending from one surface of the housing,
The screw fastening hole is included in the extension surface,
The housing connection part is coupled to the housing by the screw being fastened to the screw fastening hole in a state where the extension surface and the screw fastening hole are in contact with each other. 8. The method of claim 7,
The arrester is
body;
a disconnector disposed at a lower portion of the body; and
The down-conductor terminal connected to the down-conductor
including,
An insulation hanger is connected to the upper portion of the disconnector, the current sensing device. 9. The method of claim 8,
A control unit for generating surge current information and leakage current information by using the output signal of the first sensor and the output signal of the second sensor, and transmitting the generated surge current information and leakage current information to a management server
A current sensing device further comprising a. 10. The method of claim 9,
the first sensor is a magnetic sensor, the second sensor is a current transformer,
The control unit, when the detected leakage current is not measured for a preset time, determines that the disconnector has exploded, the current sensing device. 11. The method of claim 10,
The fixing bracket includes a hinge,
The fixing bracket is composed of a first tongs and a second tongs,
The first tongs and the second tongs are coupled using the hinge,
The fixing bracket is connected to the lightning arrester using the first tongs and the second tongs, the current sensing device. A current sensing system comprising a current sensing device, comprising:
The current sensing device,
a fixing bracket connected to the arrester connected to the down-conductor;
The enclosure is coupled to the fixing bracket and disposed at a first distance from the conducting wire
includes,
The fixing bracket includes a hinge and includes first and second tongs formed to surround the body of the lightning arrester around the hinge,
The enclosure includes a first sensor for detecting a surge current flowing in the down-conductor when lightning strikes, a current sensing system. 13. The method of claim 12,
The first sensor is disposed with the first gap from the down-conductor, the current sensing system. 14. The method of claim 13,
The enclosure is
A second sensor included in the fixing bracket and detecting the leakage current of the arrester
Further comprising, a current sensing system. 15. The method of claim 14,
The fixing bracket is configured to rotate the enclosure in a state coupled to the arrester, the current sensing system. 16. The method of claim 15,
The first tongs include a housing connection portion coupled to the housing,
One surface of the housing includes a screw fastening hole,
The current sensing system, wherein the screw fastening hole and the housing connection portion are coupled with a screw. 17. The method of claim 16,
The first tongs and the second tongs are formed in the same shape as the body shape of the arrester so as to surround the body of the arrester, the current sensing system. 18. The method of claim 17,
The bottom surface of the housing includes an extended surface extending from one surface of the housing,
The screw fastening hole is included in the extension surface,
The housing connection part is coupled to the housing by the screw being fastened to the screw fastening hole in a state where the extension surface and the screw fastening hole are in contact with each other. 19. The method of claim 18,
The arrester is
body;
a disconnector disposed on the lower portion of the body; and
the down-conductor terminal connected to the down-conductor
including,
The upper portion of the disconnector is connected to an insulating hanger, the current sensing system. 20. The method of claim 19,
A control unit for generating surge current information and leakage current information by using the output signal of the first sensor and the output signal of the second sensor, and transmitting the generated surge current information and leakage current information to a management server
A current sensing system further comprising a. 21. The method of claim 20,
the first sensor is a magnetic sensor, the second sensor is a current transformer,
The control unit, when the detected leakage current is not measured for a preset time, determines that the disconnector has exploded, the current sensing system. 22. The method of claim 21,
The fixing bracket includes a hinge,
The fixing bracket is composed of a first tongs and a second tongs,
The first tongs and the second tongs are coupled using the hinge,
The fixing bracket is connected to the lightning arrester using the first tongs and the second tongs.

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