WO2021045351A1 - Éliminateur d'arc - Google Patents

Éliminateur d'arc Download PDF

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Publication number
WO2021045351A1
WO2021045351A1 PCT/KR2020/007153 KR2020007153W WO2021045351A1 WO 2021045351 A1 WO2021045351 A1 WO 2021045351A1 KR 2020007153 W KR2020007153 W KR 2020007153W WO 2021045351 A1 WO2021045351 A1 WO 2021045351A1
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WO
WIPO (PCT)
Prior art keywords
arc
moving electrode
spring
electrode
fixed
Prior art date
Application number
PCT/KR2020/007153
Other languages
English (en)
Korean (ko)
Inventor
박기주
조현무
이상민
최승운
Original Assignee
주식회사 넥스포
주식회사 스마트파워
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 넥스포, 주식회사 스마트파워 filed Critical 주식회사 넥스포
Publication of WO2021045351A1 publication Critical patent/WO2021045351A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • 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
    • H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage

Definitions

  • the present invention relates to an arc elimination device, and to an arc elimination device capable of preventing an accident due to arc occurrence by switching to ground a high voltage power source at high speed when an arc occurs, and grounding or bypassing a high voltage current.
  • switchgear is a facility that converts and distributes extra-high voltage power to low voltage in order to receive power and supply the power required by load facilities installed in each power receiver.
  • switchgear, lightning arrester, transformer, and circuit breaker are inside. And various measuring equipment.
  • the high temperature and high pressure of the arc may damage internal devices such as various measuring equipment, and in some cases, the insulation may be destroyed and damage may occur to users who come into contact with it. There is a need for measures to prevent arcing.
  • An object of the present invention is to provide an arc removal device capable of shortening the arc removal time due to arc generation.
  • another object of the present invention is to provide an arc removal device capable of protecting power equipment while reducing the occurrence of safety accidents by shortening the arc removal time.
  • the present invention comprises a plurality of housings made of an insulating material; Fixed electrodes disposed above the housings and connected to the high voltage three-phase main busbars; A first spring provided on an inner circumferential surface of the fixed electrode; A moving electrode disposed below the housings and provided to be movable in a vertical direction; A fixing part disposed below the housings to surround the moving electrode; A second spring provided to interfere with an outer circumferential surface of the moving electrode on an inner circumferential surface of the fixing unit, and a coil unit providing an electron repulsive force to the moving electrode from a lower portion of the fixing unit; It includes, and provides an arc removing device in which the three-phase main busbar is grounded when the moving electrode contacts the fixed electrode.
  • the arc removing device may further include an insulator portion provided between the fixed electrode and the fixed portion on the inner circumferential surface of the housing and having a protruding pattern in the inner direction.
  • the arc removing device may further include a restoring part inserted into a through hole formed in a rear surface of the fixing part and returning a state in which the moving electrode is in contact with the fixed electrode.
  • the restoration unit includes a handle member that can be gripped by a user, an extension member having one end coupled to the center of the handle member and extending to be inserted into the through hole, and an extension member that is coupled to the other end of the extension member so as to move up and down inside the housing. And a third spring disposed to be movable in a direction, disposed on an outer circumferential surface of the extension member and a flange portion provided at a lower end of the moving electrode and interfering in a downward direction, and spaced apart between the bottom surface of the fixing portion and the mover. I can.
  • At least one or more of a moving electrode, a fixing part, an extension member, or a movable member provided in each of the housings adjacent to each other may be energized with each other.
  • the moving electrode includes a flange portion disposed adjacent to the coil portion in a normal operation state, a first body extending from an outer circumferential surface of the flange portion in the direction of the second spring, and an arc further extending from the end of the first body.
  • it may include a second body in contact with the first spring or the fixed electrode.
  • the second body may have an outer diameter smaller than that of the first body.
  • the thickness of the first spring and the second spring may be deformed while being compressed in the left and right directions.
  • the arc removal device can be easily installed in existing distribution or substation facilities
  • FIG. 1 is a perspective view showing the outside of a switchgear according to the present invention.
  • FIG. 2 is a cross-sectional view showing the inside of the side of the switchboard provided with the arc removing device shown in FIG. 1.
  • FIG. 3 is a partially enlarged perspective view showing the arc removing apparatus shown in FIG. 2.
  • FIG. 4 is a partial cross-sectional perspective view showing a first housing of the arc removing apparatus shown in FIG. 3 by partially cutting it.
  • FIG. 5 is a cross-sectional view showing the inside of the first housing in the normal operation state of the arc removing apparatus of the present invention.
  • FIGS. 6 and 7 are cross-sectional views showing the inside of the first housing in the abnormal operation state of the arc removing apparatus of the present invention.
  • FIG. 8 is a reference diagram briefly showing a process of operating the arc removal apparatus of the present invention.
  • FIG. 1 is a perspective view showing the outside of the switchboard according to the present invention
  • FIG. 2 is a cross-sectional view showing the inside of the side of the switchboard provided with the arc removing device shown in FIG. 1
  • FIG. 3 is a view showing the arc removing device shown in FIG. It is a perspective view showing partially enlarged.
  • the switchgear 1 includes an enclosure body 10, a door 20 selectively opening and closing an opening 11 opened in the front or rear of the enclosure body 10, and an arc. It includes a removal device (100).
  • the enclosure body 10 has a substantially rectangular parallelepiped shape, and VCB, VCS, VC, ACB, MCCB, PCBs and reactors, inverters, capacitors, measurement control modules, SMPS, EMI filters and transformers that supply power to the interior. Etc. can be mounted.
  • a switchgear is not shown in the drawing, but an input unit that outputs a DC current generated from the outside in a series connection method, an output unit that is connected in series to the input unit and outputs a DC current output from the input unit to the inverter, and the output current value. It may include a control unit that detects and monitors the overvoltage value.
  • a vibration isolating device (not shown) or a seismic isolating device (not shown) may be provided between the installation surface and the enclosure body 10 on the bottom of the enclosure body 10 so as to respond to an external force such as an earthquake.
  • a door 20 capable of opening and closing the opening 11 of the enclosure body 10 is provided on the front or rear surface of the enclosure body 10.
  • the door 20 may be selectively provided on the front and rear surfaces of the enclosure body 10.
  • the arc removing device 100 is coupled for each phase on the three-phase main busbar to which the high voltage is applied. Therefore, three fixed electrodes connected to the three-phase main busber of the arc removing device 100 are provided.
  • the arc removing apparatus 100 is provided with three housings 110 corresponding to the main busbars, respectively, and the internal structure of each housing 110 is the same.
  • the internal structure of the first housing 110a will be described in detail, and since the structures of the second housing 110b and the third housing 110c are the same as those of the first housing 110a, a duplicate description will be omitted. .
  • a sensor for detecting an arc may be provided inside the enclosure body 10. And when the arc is detected by the sensor unit, a control signal is transmitted to the arc removal device 10 through the control unit to short the three-phase main busbar, and the three-phase main bus bar is also provided through the main circuit breaker (VCB) receiving the control signal from the control unit. Power to the busbar can be cut off.
  • VB main circuit breaker
  • FIG. 4 is a partial cross-sectional perspective view showing the first housing of the arc removing apparatus shown in FIG. 3 by partially cutting it
  • FIG. 5 is a cross-sectional view showing the inside of the first housing in a normal operation state of the arc removing apparatus of the present invention
  • 6 and 7 are cross-sectional views showing the inside of the first housing in the abnormal operation state of the arc removing apparatus of the present invention.
  • the normal operation state may represent the normal operation state of the switchgear 1, and a state in which an arc does not occur in the switchgear 1 may be determined as the normal operation state.
  • the abnormal operation state can be determined by detecting that an arc has occurred inside the switchgear 1.
  • the arc removing apparatus 100 of the present invention includes a housing 110, a fixed electrode 120, a first spring 130, a moving electrode 140, and a fixed part 150. And a second spring 160, a coil unit 170, an insulator unit 180, and a restoration unit 190.
  • the housing 110 will be described with respect to the first housing 110a (hereinafter, referred to as a housing) as described above.
  • the housing 110 is made of an insulating material and has a substantially hollow cylindrical shape.
  • the front of the housing 110 is opened so that the main busbar is connected, so that the fixed electrode 120 is exposed inside the housing 110.
  • the rear of the housing 110 is coupled to one panel 151 along with other housings (second housing and third housing).
  • the panel 151 may be a structure that integrally connects the rear of the plurality of fixing parts 150, and may be a structure coupled to each other so that the respective fixing parts 150 are energized (hereinafter, the front and the rear are shown in FIG. 5). Indicates the upper and lower directions based on)
  • the fixed electrode 120 is coupled to the inside of the housing 110 so that the main busbar is coupled to the front side, and the rear side may be exposed to selectively contact the moving electrode 140.
  • a first spring groove 121 is formed at the rear of the fixed electrode 120 so that the first spring 130 is coupled, and when the moving electrode 140 moves in the direction of the fixed electrode 120, the moving electrode 140
  • the elastic member 122 in contact with the inner circumferential surface of the may be coupled.
  • the elastic member 122 may be made of a material that is electrically energized with the fixed electrode 120 and may be elastically deformed and restored in appearance. Therefore, the elastic member 122 and the first spring 130 are arranged to face each other, and when an arc occurs, the elastic member 122 and the first spring 130 can be applied with a force pressing the moving electrode 140, respectively. have.
  • the fixing part 150 is disposed so as to surround the moving electrode 140 inside the housing 110.
  • the fixing part 150 may be coupled in a structure in which the moving electrode 140 is disposed inside the housing 110 from the rear of the housing 110.
  • the fixing part 150 is formed in a hollow cylindrical shape that is opened toward the front and is formed to be energized with the moving electrode 140.
  • a second spring groove 152 is formed at the front end of the fixing part 150 so that the second spring 160 is coupled to the inner circumferential surface, and the second spring 160 is a moving electrode disposed inside the fixing part 150 ( 140) is arranged to interfere with the outer circumferential surface.
  • a coil part 170 is disposed inside the rear of the fixing part 150, and the coil part 170 is formed to cover the rear of the fixing part 150. That is, the fixing part 150 has the moving electrode 140 and the coil part 170 disposed toward the rear inside, and the fixing part 150 is detachably coupled to the panel 151 or integrally with the panel 151 It can be made of.
  • the moving electrode 140 is disposed to be movable forward or backward inside the fixing part 150. At this time, the movement of the moving electrode 140 may be a sliding movement.
  • the forward movement of the moving electrode 140 is performed using an electron repulsive force generated by the coil unit 170. Since the electron repulsive force applied to the coil unit 170 has an excellent instantaneous acceleration force, the forward movement of the moving electrode 140 can be made at a high speed.
  • the arc removal apparatus 100 of the present invention can detect an arc within about 5 ms and ground the main busbar, thereby protecting users and power equipment. According to reports of damage caused by arcing, extinguishing the arc within about 35ms results in little damage to users and power facilities.
  • the moving electrode 140 further extends from the flange portion 141 disposed adjacent to the coil portion 170, the first body 142 extending forward from the flange portion 141, and the first body 142 It includes a second body (143) to be.
  • the flange portion 141 is a portion that directly receives the electron repulsion force of the coil portion 170 and is disposed at the rearmost portion of the cylindrical moving electrode 140.
  • a restoration part 190 is partially disposed inside the moving electrode 140 in communication with the through hole 152 formed in the panel 151 disposed behind the fixing part 150.
  • the moving electrode 140 may be guided according to the forward/rear movement by the mover 192 of the restoration unit 190 and the fixing unit 150.
  • the insulator part 180 is mounted inside the housing 110 with an insulating material to prevent electricity between the fixed electrode 120 and the moving electrode 140 from being energized by foreign substances or moisture.
  • the insulator part 180 may include a plurality of protrusions 181 patterns protruding in the inner direction.
  • the moving electrode 140 is disposed inside the fixing unit 150, and at this time, the first body 142 and the first body 142
  • the region between the two bodies 143 may be formed of an inclined surface or a curved surface, and the second spring 160 is disposed to interfere with the region between the first body 142 and the second body 143.
  • the first body 142 has an outer diameter larger than that of the second body 143. Accordingly, the second spring 160 is disposed to interfere with the region between the first body 142 and the second body 143 or the outer circumferential surface of the first body 142 in the normal operation state.
  • the magnetic flux generated from the coil wound a plurality of times is induced by the moving electrode 140, and the magnetic flux is generated by the eddy current induced by the moving electrode 140. It provides repulsion.
  • the repulsive force is an electron repulsive force of magnetic force versus magnetic force, even a non-magnetic material can move.
  • the coil unit 170 may be applied with a Thompson coil.
  • the second spring 160 moves forward while the second spring 160 is It comes into contact with the outer circumferential surface of the body 143.
  • the force that the moving electrode 140 moves forward is achieved while the electron repulsive force of the coil unit 170 is applied to the flange unit 141.
  • the moving electrode 140 comes into contact with the fixed electrode 120 while completely moving. That is, the first body 142 is disposed so that the inner circumferential surface of the fixed electrode 120 or the elastic member 122 and the inner circumferential surface contact, and the first spring 130 is in contact with the outer circumferential surface of the first body 142. Therefore, the fixed electrode 120 and the moving electrode 140 are energized, the moving electrode 140 is energized with the fixed part 150, and the fixed part 150 is energized with other adjacent fixed parts. When a short occurs, it is discharged to the ground path.
  • the first spring 130 and the second spring 160 each have a single spring tube shape by connecting a starting point and an ending point to each other.
  • the outer diameter does not change, and the inner diameter may be deformed. That is, when the moving electrode 140 contacts the inside of the first spring 130 and the second spring 160, each spring is connected in a diagonal direction, so that the inner circumferential surface approaches the outer circumferential surface and is compressed while lying down. Therefore, when the first spring 130 and the second spring 160 contact the moving electrode 140, each spring is compressed, thereby enabling the outer peripheral surface of the moving electrode 140 to be pressed and supported.
  • the restoration unit 190 has a handle member 191 that is exposed on the rear surface of the panel 151 and can be gripped by a user, and one end is coupled to the center of the handle member 191
  • the extension member 193 is inserted into the through hole 152 and extends into the fixing part 150, and is coupled to the other end of the extension member 193 so as to move up and down inside the housing 110 or inside the moving electrode 140.
  • a third spring that is disposed so as to be movable in the direction and spaced apart between the inner bottom surface of the fixing unit 150 and the mover 192 on the mover 192 and the extension member 193 interfering with the flange part 141 in the lower direction. 194).
  • the restoration unit 190 provides a function of returning the shorted state of the main busbar to the original position in the abnormal operation state so that the arc removal device 100 can be reused.
  • the handle member 191 is made of an insulating material, and is disposed to be exposed to the outside of the arc removing device 100 so that the user can grasp and pull it.
  • An extension member 193 that is elongated into the housing 110 is provided inside the handle member 191.
  • the extension member 193 has a rod or pipe shape, and when the handle member 191 is pulled, the mover 192 provides a function of separating the moving electrode 140 from the fixed electrode 120.
  • a third spring 194 is disposed on the outer circumferential surface of the extension member 193 to separate the movable member 192 and the inner bottom surface of the fixing unit 150 or the inner bottom surface of the panel 151. Alternatively, the third spring 194 may be coupled to be spaced apart between the mover 192 and the upper surface of the coil unit 170.
  • the mover 192 is spaced apart by the third spring 194 in the normal operation state and is located above the inside of the fixing part 150.
  • the rear surface of the mover 192 is formed in a shape corresponding to the inner upper surface of the flange portion 141, and when the handle member 191 is pulled, they come into contact with each other. Therefore, when the moving electrode 140 pulls the handle member 191 in a state coupled to the fixed electrode 120, the extension member 193 pulls the mover backward, and at this time, the rear surface and the flange portion of the mover 192 As the inner upper surface of the 141 is in contact, the moving electrode 140 is pulled backward. When the moving electrode 140 returns to its original position in the fixed part 150 in a normal operating state, the handle member 191 is released, and the mover 192 and the extension member 193 are moved to their original positions by the third spring 194. It is done.
  • FIG. 8 is a reference diagram briefly showing a process of operating the arc removal apparatus of the present invention.
  • the arc removal device 100 in a normal operation state, maintains a three-phase main busbar and a switched off state.
  • the master unit cuts off the power as shown in Fig. 8(d) by blocking the main breaker of the three-phase main busbar.
  • a separate controller so that one transmits a trip signal for a ground fault current and the other transmits a trip signal according to a short circuit.
  • the time taken from arc generation to arc removal can be significantly reduced, and safety accidents or damage to power facilities can be prevented by reducing the time required for arc removal. It can be easily installed in existing distribution or substation facilities, and there is an effect that the arc removal device can be reused again even after the arc removal device is operated.
  • coil part 180 insulator part
  • restoration unit 1 switchboard
  • enclosure body 20 door

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

La présente invention concerne un éliminateur d'arc, comprenant : une pluralité de logements constitués d'un matériau isolant ; des électrodes fixes disposées sur les côtés supérieurs de l'intérieur des logements et connectées à chacune des barres omnibus principales triphasées à haute tension ; des premiers ressorts disposés sur les surfaces circonférentielles internes des électrodes fixes ; des électrodes mobiles disposées sur les côtés inférieurs de l'intérieur des logements de façon à être mobiles dans leur direction verticale ; des unités de fixation disposées de façon à entourer les électrodes mobiles sur les côtés inférieurs de l'intérieur des logements ; des seconds ressorts disposés pour interférer avec les surfaces circonférentielles externes des électrodes mobiles sur les surfaces circonférentielles internes des unités de fixation ; et des unités de bobine qui fournissent une force de répulsion d'électrons aux électrodes mobiles sur les côtés inférieurs des unités de fixation. Lorsque les électrodes mobiles sont en contact avec les électrodes fixes, les barres omnibus principales triphasées sont mises à la terre.
PCT/KR2020/007153 2019-09-04 2020-06-02 Éliminateur d'arc WO2021045351A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020190109266A KR102095408B1 (ko) 2019-09-04 2019-09-04 아크 제거장치
KR10-2019-0109266 2019-09-04

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WO2021045351A1 true WO2021045351A1 (fr) 2021-03-11

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WO (1) WO2021045351A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023101652A1 (fr) * 2021-11-30 2023-06-08 Siemens Aktiengesellschaft Solution empêchant une déformation permanente dans un événement de défaut d'arc ou un événement de court-circuit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102095408B1 (ko) * 2019-09-04 2020-04-01 주식회사 스마트파워 아크 제거장치
KR102279331B1 (ko) * 2020-11-10 2021-07-20 (주)비츠로이에스 Vi가 적용된 아크제거기

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0644868A (ja) * 1992-07-16 1994-02-18 Energy Support Corp 露出形気中負荷開閉器
KR20100063556A (ko) * 2008-12-03 2010-06-11 엘에스산전 주식회사 수배전반의 고속 투입 스위치
KR20130012523A (ko) * 2011-07-25 2013-02-04 엘에스산전 주식회사 진공 인터럽터의 동력전달 장치
KR20150005257A (ko) * 2013-07-05 2015-01-14 현대중공업 주식회사 고속투입스위치
KR20170092051A (ko) * 2016-02-02 2017-08-10 엘에스산전 주식회사 릴레이
KR102095408B1 (ko) * 2019-09-04 2020-04-01 주식회사 스마트파워 아크 제거장치

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0644868A (ja) * 1992-07-16 1994-02-18 Energy Support Corp 露出形気中負荷開閉器
KR20100063556A (ko) * 2008-12-03 2010-06-11 엘에스산전 주식회사 수배전반의 고속 투입 스위치
KR20130012523A (ko) * 2011-07-25 2013-02-04 엘에스산전 주식회사 진공 인터럽터의 동력전달 장치
KR20150005257A (ko) * 2013-07-05 2015-01-14 현대중공업 주식회사 고속투입스위치
KR20170092051A (ko) * 2016-02-02 2017-08-10 엘에스산전 주식회사 릴레이
KR102095408B1 (ko) * 2019-09-04 2020-04-01 주식회사 스마트파워 아크 제거장치

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023101652A1 (fr) * 2021-11-30 2023-06-08 Siemens Aktiengesellschaft Solution empêchant une déformation permanente dans un événement de défaut d'arc ou un événement de court-circuit

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