KR101556604B1 - Gas leak detection device of indoor GIS substations - Google Patents

Gas leak detection device of indoor GIS substations Download PDF

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Publication number
KR101556604B1
KR101556604B1 KR1020150061092A KR20150061092A KR101556604B1 KR 101556604 B1 KR101556604 B1 KR 101556604B1 KR 1020150061092 A KR1020150061092 A KR 1020150061092A KR 20150061092 A KR20150061092 A KR 20150061092A KR 101556604 B1 KR101556604 B1 KR 101556604B1
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KR
South Korea
Prior art keywords
gas
blowers
space
detector
discharge
Prior art date
Application number
KR1020150061092A
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Korean (ko)
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KR20150073139A (en
Inventor
심민섭
Original Assignee
주식회사 도일전기
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Priority to KR1020150061092A priority Critical patent/KR101556604B1/en
Publication of KR20150073139A publication Critical patent/KR20150073139A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear
    • H02B13/065—Means for detecting or reacting to mechanical or electrical defects
    • H02B13/0655—Means for detecting or reacting to mechanical or electrical defects through monitoring changes of gas properties
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
    • G08B21/14—Toxic gas alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • G08B3/1008—Personal calling arrangements or devices, i.e. paging systems
    • G08B3/1016—Personal calling arrangements or devices, i.e. paging systems using wireless transmission
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/56—Cooling; Ventilation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear
    • H02B13/045—Details of casing, e.g. gas tightness

Abstract

The present invention relates to an apparatus for detecting a leak gas in an indoor substation GIS, and more particularly, to an apparatus for detecting a leak in a substation GIS, and more particularly to an apparatus for detecting an equipment accident caused by insulation breakdown of a gas insulated switchgear (GIS) To an apparatus for detecting leak gas of an indoor substation GIS that can prevent human accidents such as suffocation by oxygen deficiency.
According to the present invention, it is possible to prevent human accidents such as facility accidents due to insulation breakdown of GIS, and suffocation due to oxygen deficiency of a worker by previously detecting and alerting the leakage of SF6 gas in a substation in advance.

Description

[0001] The present invention relates to a gas leak detection device for indoor GIS substation,

The present invention relates to an apparatus for detecting a leak gas in an indoor substation GIS, and more particularly, to an apparatus for detecting a leak in a substation GIS, and more particularly to an apparatus for detecting an equipment accident caused by insulation breakdown of a gas insulated switchgear (GIS) To an apparatus for detecting leak gas of an indoor substation GIS that can prevent human accidents such as suffocation by oxygen deficiency.

An indoor substation is a substation in which a main substation is installed in a building, that is, an enclosed space.

This indoor substation is equipped with a gas insulated switchgear (GIS) to monitor, control, protect, and measure the power system, The line is safely opened and closed to properly protect the system.

At this time, the GIS is filled with SF6 (hexafluorine sulfur) gas, which is an insulating medium, and the inside is electrically insulated.

In addition, the GIS has built-in shut-off devices such as disconnectors, earthing switches and circuit breakers, and is mainly used for shutting down the fault current. In order to check the internal check status at regular intervals, SF6 After the gas is recovered, the inside is inspected.

However, the SF6 gas sealed in the GIS is a colorless odorless gas which is 6 times heavier than air.

However, when the operator who does not know the leak condition enters the indoor substation, which is a closed space, to work, there is a great risk of safety accidents such as suffocation by oxygen deficiency.

In addition, because there is no way to check whether the gas is leaked, if the SF6 gas to be insulated from the GIS is leaked, the insulation of the GIS will be destroyed, and if it is not detected in advance, there is a serious problem causing a large facility accident.

Nevertheless, there is no system or method for detecting this in advance.

However, only the related arts are disclosed only in the registered patent No. 0757075 (2007.09.03) and registered patent No. 1164583 (July 04, 2012).

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems in the prior art, and it is an object of the present invention to provide a system and a method for detecting a leak of SF6 gas in an indoor substation in advance, The present invention provides a leak gas detecting device for a GIS in an indoor substation that can prevent human accidents such as suffocation by a gas turbine.

The present invention provides a detection device including a detector (100) for real-time detection of leaked SF6 gas disposed on the inner bottom of an indoor substation as means for achieving the above object, comprising: The detector 100 includes a detector housing 110 in the form of a rectangular box with an open top; The inner space of the detector housing 110 is partitioned into three first, second, and third spaces S1, S2, S3 by a pair of partitions 120; A detection sensor 200 is installed at the center bottom of the second space S2; The first blower B1 and the second blower B2 are mounted in the first and third spaces S1 and S3 on both sides of the second space S2; The first and second blowers B1 and B2 are blowers configured to suck air in a lateral direction to discharge air upward; A plurality of suction holes 130 and 130 'having a slit shape are formed on the circumferential surfaces of the detector housing 110 except for a wall surface portion facing the second space S2; A hole-shaped discharge hole 140 is formed in both side walls of the detector housing 110 facing the second space S2; A detection sensor 200 is installed on the bottom surface of the second space S2, which is a gas sensor sensor of a non-indicating type transmitter type which detects leakage of SF6 gas and converts the detection signal into a standard current signal and outputs it to the outside; The open upper portion of the detector housing 110 is sealed by the blocking plate 300; The portion of the shield plate 300 contacting with the air discharge portion of the first and second blowers B1 and B2 is cut to form the discharge passage 310; A flow-through hole 320 is formed at the center of the blocking plate 300. A screw tab is formed on the inner diameter of the flow-through hole 320 to insert and remove the amplifying injector 330. The amplifying injector 330 is formed with an injection path 340 having a structure having a wide upper portion and a gradually narrower lower portion and then gradually increasing in diameter on the contrary; The discharge end of the injection path 340 is spaced apart from the upper surface of the detection sensor 200; An upper portion of the blocking plate 300 is covered with a cover 400; A controller 410 is installed on the cover 400; The controller 410 is connected to the detection sensor 200 and is connected to control the driving of the first and second blowers B1 and B2; The controller 410 further includes an antenna 420 for wirelessly communicating a gas leak to the outside according to a detection signal of the detection sensor 200. [

At this time, the controller 410 is configured to periodically operate the first and second blowers B1 and B2 by a timer for a predetermined time; Shaped slide guide SG is attached and fixed to a lower portion of the discharge hole 140. The slide guide SG is fitted with an open / close plate PT to vertically move up and down, PT are connected to the solenoid cylinder SC through the opening and closing rod RD to seal the discharge hole 140 for a predetermined time when the first and second blowers B1 and B2 are operated, There are also features.

According to the present invention, it is possible to prevent human accidents such as facility accidents caused by insulation breakdown of GIS, and suffocation due to oxygen deficiency of workers by previously detecting and alerting leak of SF6 gas in a substation in advance.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an exemplary partial plan view of a detector for leak gas detection of an indoor substation GIS in accordance with the present invention.
2 is an exemplary exploded view of a detector according to the present invention.
3 is a cross-sectional view showing a principal part showing an operation example of a detection sensor constituting a detector according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Before describing the present invention, the following specific structural or functional descriptions are merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

A detector 100 for detecting leakage of SF6 gas, which is a sealing gas for insulation of an indoor substation GIS according to the present invention, may be used as the detector 100 shown in Figs.

The detector 100 shown in FIGS. 1 to 3 is 6 times heavier than the air, and has a structure for effectively and accurately detecting SF6 gas having a colorless odorless property, which is mainly spread on the bottom.

That is, the detector 100 accumulates a small amount of SF6 gas and has a kind of amplification detection function, so that even minute gas leakage can be detected immediately, thereby preventing a safety accident.

The detector 100 includes a detector housing 110.

The detector housing 110 is formed in a rectangular box shape with an open top.

The inner space of the detector housing 110 is partitioned by a pair of partition walls 120.

The space defined by the partition 120 may be divided into three spaces S1, S2, and S3. At this time, the second space S2 should be formed relatively smaller than the remaining space, in order to enhance the detection function. That is, even if only a small amount of gas flows in a small space, the detection ability is increased accordingly.

 In addition, a detection sensor 200 is installed at the center bottom of the second space S2, and a first blower (not shown) is installed in the first and third spaces S1 and S3 on both sides of the second space S2, B1 and a second blower B2 are mounted.

At this time, the first and second blowers B1 and B2 should use a fan having a direction in which the air discharge direction is orthogonal to the air suction direction.

That is, the suction direction becomes both side surfaces of the detector housing 110, and the discharge direction becomes the upper surface of the detector housing 110.

Accordingly, the detector housing 110 has a plurality of slit-shaped suction holes 130 formed on both sides thereof. The suction holes 130 must have a slit shape, not a circular shape. In particular, I.e., in the longitudinal direction.

This is to increase the suction power near the floor as much as possible, considering that the gas to be detected is six times as heavy as air and is mainly located on the floor.

Furthermore, the number of suction holes 130 'formed in a part of the surface orthogonal to the suction holes 130 formed on the surface of the detector housing 110 facing the suction side of the first and second blowers B1 and B2 To more evenly distribute the variously distributed leak gases around the detector housing 110 evenly.

In addition, a hole communicating with the second space S2 is formed on both side walls of the detector housing 110 facing the second space S2. This hole is a discharge hole 140 for discharging after the detection, It is particularly preferable that the exhaust hole 140 is formed so as to be concentrated only on the upper side in the height direction of the detector housing 110. This is to minimize the suction disturbance through the suction holes 130 and 130 'to increase the suction efficiency.

Therefore, the discharge hole 140 is not required to be in the form of a slit, and therefore, a hole shape is preferable.

In particular, a 'U' shaped slide guide SG is attached and fixed to a lower portion of the discharge hole 140. The slide guide SG is fitted with an open / close plate PT, The plate PT is connected to the solenoid cylinder SC via the opening / closing rod RD.

Thus, when the detector 100 of the present invention is operated, the opening and closing plate PT is maintained in the raised state for a certain period of time together with the start of operation to close the discharge hole 140, so that the suction amount of the SF6 gas is sufficient So that the detection capability can be increased.

Then, after a predetermined time elapses, the solenoid cylinder SC is timed down to control the opening / closing plate PT to open the discharge hole 140, so that the gas containing the air that has been sucked is discharged out of the detector housing 110, This allows you to perform tasks.

Further, the detection sensor 200 is a known gas sensor sensor of a non-indicating type transmitter type which detects leak of SF6 gas and converts the detection signal into a standard current signal and outputs it to the outside. When the sensor 200 comes into contact with the SF6 gas, A chemical reaction (oxidation and reduction) takes place, and an electrolytic current proportional to the reaction concentration of the gas flows, and a proportional electromotive force is generated.

Then, the transmitter converts it into a stable standard current signal (4-20mA) based on the converted current and the electromotive force generated in proportion to it, and outputs it to the outside.

At this time, the output standard current signal is output to the controller 410 attached to the cover 400, which will be described later, and the controller 410 receives the representative current signal, By transmitting the signals, it is possible to transmit the signals to a system such as an integrated system, such as a SCADA (centralized remote monitoring and control system), so that the integrated management can be configured.

Of course, this is only one preferred example, and it can be configured to be individually manageable. For example, it is possible to install a warning sign on an indoor entry door provided with an indoor transformer, Of course.

In addition, the controller 410 and the first and second blowers B1 and B2 can be used as a power source by using an AC 220V power source wired in the house.

Particularly, in the present invention, a sufficient amount of SF6 gas can be amplified to a sufficient extent so that the problem of detection failure due to insufficient detection amount when a small amount of SF6 leakage can be solved can be completely solved. To this end, the detector housing 110, Is closed by the blocking plate (300).

The blocking plate 300 is a member formed in a shape of a quadrangular plate as shown in the figure so that the open top of the detector housing 110 is closed while the first and second blowers B1, And is formed so as to constitute the discharge passage 310.

In addition, a flow-through hole 320 is formed in the center of the blocking plate 300, and a screw tab is formed on the inner diameter of the flow-through hole 320 so that the amplifying injector 330 can be assembled .

In addition, the amplification injector 330 has an injection path 340 having a structure having a wide upper portion and a gradually narrower lower portion and then gradually increasing in diameter.

Therefore, the air to be sprayed rapidly escapes, and is uniformly spread over the entire surface of the detection sensor 200 while spreading suddenly.

The cover 400 is covered with the blocking plate 300 mounted thereon and the lead wire drawn out from the detecting sensor 200 is connected to the controller 410.

In addition, the controller 410 periodically activates the first and second blowers B1 and B2 by a timer.

The present invention having such a configuration operates as follows.

A plurality of detectors 100 according to the present invention are disposed at intervals in the corner of an indoor substation.

The arrangement of the detector 100 is such that it is seated on the bottom surface.

When the first and second blowers B1 and B2 are operated in a state where the detector 100 is installed and the leakage of the SF6 gas occurs and the first and second blowers B1 and B2 are operated in a state of being laid on the floor, some of the SF6 gas laid down is discharged through the suction holes 130 and 130 ' The air is sucked into the spaces S1 and S2 and flows in the direction of movement of the first and second blowers B1 and B2 and then flows through the discharge plate 310 of the blocking plate 300 and the blocking plate 300 and the cover 400, respectively.

At this time, even though the amount of SF6 gas is small, it is sucked in all directions, and therefore, it is an amount sufficient for detection in the space between the blocking plate 300 and the cover 400. [

However, since the space is all sealed, the only passage that can be discharged is the injection path 340 of the amplifying injector 330.

As a result, the collected SF6 gas is simultaneously moved at the same time through the injection path 340 of the amplifying injector 330, and is spread uniformly on the surface of the detection sensor 200 while being rapidly diffused due to the characteristics of the flow path.

Then, the detection sensor 200 generates a constant current and an electromotive force by causing a chemical reaction on the surface, which is transmitted to the controller 410 through a lead wire, and the controller 410 receiving the sensor generates a constant current and an electromotive force by using an antenna 420, To signal that the SF6 gas has leaked to the monitoring system so that it can be managed immediately.

In this way, it is possible to detect the leakage of SF6 gas, which is colorless and odorless, in real time, so that stable indoor substation operation becomes possible.

100: Detector 200: Detection sensor
300: blocking plate 400: cover

Claims (2)

A detecting device comprising a detector (100) for detecting a leaked SF6 gas in real time on an inner floor of an indoor substation in real time, the detecting device comprising:
The detector 100 includes a detector housing 110 in the form of a rectangular box with an open top; The inner space of the detector housing 110 is partitioned into three first, second, and third spaces S1, S2, S3 by a pair of partitions 120; A detection sensor 200 is installed at the center bottom of the second space S2; The first blower B1 and the second blower B2 are mounted in the first and third spaces S1 and S3 on both sides of the second space S2; The first and second blowers B1 and B2 are blowers configured to suck air in a lateral direction to discharge air upward; A plurality of suction holes 130 and 130 'having a slit shape are formed on the circumferential surfaces of the detector housing 110 except for a wall surface portion facing the second space S2; A hole-shaped discharge hole 140 is formed in both side walls of the detector housing 110 facing the second space S2; A detection sensor 200 is installed on the bottom surface of the second space S2, which is a gas sensor sensor of a non-indicating type transmitter type which detects leakage of SF6 gas and converts the detection signal into a standard current signal and outputs it to the outside; The open upper portion of the detector housing 110 is sealed by the blocking plate 300; The portion of the shield plate 300 contacting with the air discharge portion of the first and second blowers B1 and B2 is cut to form the discharge passage 310; A flow-through hole 320 is formed at the center of the blocking plate 300. A screw tab is formed on the inner diameter of the flow-through hole 320 to insert and remove the amplifying injector 330. The amplifying injector 330 is formed with an injection path 340 having a structure having a wide upper portion and a gradually narrower lower portion and then gradually increasing in diameter on the contrary; The discharge end of the injection path 340 is spaced apart from the upper surface of the detection sensor 200; An upper portion of the blocking plate 300 is covered with a cover 400; A controller 410 is installed on the cover 400; The controller 410 is connected to the detection sensor 200 and is connected to control the driving of the first and second blowers B1 and B2; Wherein the controller (410) further includes an antenna (420) for wirelessly communicating a gas leakage to the outside according to a detection signal of the detection sensor (200).
The method of claim 1,
The controller 410 is configured to periodically activate the first and second blowers B1 and B2 by a timer for a predetermined time; Shaped slide guide SG is attached and fixed to a lower portion of the discharge hole 140. The slide guide SG is fitted with an open / close plate PT to vertically move up and down, PT are connected to the solenoid cylinder SC through the opening and closing rod RD to seal and open the discharge hole 140 for a predetermined time when the first and second blowers B1 and B2 are operated A leak gas detection device for indoor substation GIS.
KR1020150061092A 2015-04-30 2015-04-30 Gas leak detection device of indoor GIS substations KR101556604B1 (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
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KR20190042359A (en) 2017-10-16 2019-04-24 한국전력공사 Apparatus for detecting leakage gas, Method thereof, and Storage medium having the same
CN110491107A (en) * 2019-08-19 2019-11-22 华能四川水电有限公司 A kind of pressure degrading prediction technique of sulfur hexafluoride, system, storage medium and equipment
CN111307376A (en) * 2020-03-04 2020-06-19 云南电网有限责任公司电力科学研究院 Method and system for detecting GIS gas leakage
KR102260965B1 (en) * 2020-11-17 2021-06-07 이승철 Monitoring apparatus for preventing disaster in distribution board using automatically changing gas atmosphere
KR102297179B1 (en) 2020-12-30 2021-09-02 (주)이림엔지니어링 Air circulation system for substation
KR20210154020A (en) 2020-06-11 2021-12-20 한국전력공사 Gas leak detection ring and gas leak detection method using the same
KR20220028338A (en) 2020-08-28 2022-03-08 한국전력공사 Detection paper kit for detecting leakage sulfur hexafluoride gas and sulfur hexafluoride gas leak detection method using the same
KR102535023B1 (en) 2022-12-26 2023-05-26 강원숙 Air purification system for substation

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CN110850124B (en) * 2019-11-27 2020-06-30 郴州立凯锋电子科技有限公司 Switch board intellectual detection system device convenient to detect comprehensively and be convenient for unsettled installation
CN112179591A (en) * 2020-09-16 2021-01-05 国网山东省电力公司济南市济阳区供电公司 Intelligent detection vehicle for sulfur hexafluoride gas leakage of transformer substation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100861442B1 (en) 2007-05-30 2008-10-02 주식회사 효성 Structure for mounting external type sensor for measuring partial discharge of gas insulating opening/closing apparatus
KR100902684B1 (en) 2008-10-27 2009-06-15 주식회사 대륙 The electrical device with sensor for temperature
JP2015052553A (en) 2013-09-09 2015-03-19 中国電力株式会社 Gas leakage monitor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100861442B1 (en) 2007-05-30 2008-10-02 주식회사 효성 Structure for mounting external type sensor for measuring partial discharge of gas insulating opening/closing apparatus
KR100902684B1 (en) 2008-10-27 2009-06-15 주식회사 대륙 The electrical device with sensor for temperature
JP2015052553A (en) 2013-09-09 2015-03-19 中国電力株式会社 Gas leakage monitor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190042359A (en) 2017-10-16 2019-04-24 한국전력공사 Apparatus for detecting leakage gas, Method thereof, and Storage medium having the same
CN110491107A (en) * 2019-08-19 2019-11-22 华能四川水电有限公司 A kind of pressure degrading prediction technique of sulfur hexafluoride, system, storage medium and equipment
CN110491107B (en) * 2019-08-19 2020-12-29 华能四川水电有限公司 Sulfur hexafluoride pressure degradation prediction method, system, storage medium and equipment
CN111307376A (en) * 2020-03-04 2020-06-19 云南电网有限责任公司电力科学研究院 Method and system for detecting GIS gas leakage
KR20210154020A (en) 2020-06-11 2021-12-20 한국전력공사 Gas leak detection ring and gas leak detection method using the same
KR20220028338A (en) 2020-08-28 2022-03-08 한국전력공사 Detection paper kit for detecting leakage sulfur hexafluoride gas and sulfur hexafluoride gas leak detection method using the same
KR102260965B1 (en) * 2020-11-17 2021-06-07 이승철 Monitoring apparatus for preventing disaster in distribution board using automatically changing gas atmosphere
KR102297179B1 (en) 2020-12-30 2021-09-02 (주)이림엔지니어링 Air circulation system for substation
KR102535023B1 (en) 2022-12-26 2023-05-26 강원숙 Air purification system for substation

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