EP3948912B1 - Sectionneur à coupure en charge à moyenne tension - Google Patents

Sectionneur à coupure en charge à moyenne tension Download PDF

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Publication number
EP3948912B1
EP3948912B1 EP20710860.6A EP20710860A EP3948912B1 EP 3948912 B1 EP3948912 B1 EP 3948912B1 EP 20710860 A EP20710860 A EP 20710860A EP 3948912 B1 EP3948912 B1 EP 3948912B1
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EP
European Patent Office
Prior art keywords
contact
hollow
self
volume
medium
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP20710860.6A
Other languages
German (de)
English (en)
Other versions
EP3948912A1 (fr
Inventor
Marvin Bendig
Paul Gregor Nikolic
Florian Pleye
Martin Schaak
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
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Siemens AG
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Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP3948912A1 publication Critical patent/EP3948912A1/fr
Application granted granted Critical
Publication of EP3948912B1 publication Critical patent/EP3948912B1/fr
Active legal-status Critical Current
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7023—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas

Definitions

  • the object of the invention is to provide a medium-voltage switch-disconnector that can be operated with an insulating medium that is alternative to the SF 6 , but has the same arc extinguishing behavior as a conventional SF 6 -operated switch-disconnector and can basically be operated with a drive unit, which also corresponds to a conventional size.
  • the medium-voltage switch-disconnector according to the invention according to claim 1 has two contacts that are mounted movably relative to one another.
  • One of the contacts is designed as a hollow contact, which is part of a hollow contact system.
  • an insulating material nozzle is provided which surrounds at least one of the two contacts, the insulating material nozzle having a self-blowing volume for receiving an insulating gas, the self-blowing volume in turn having an opening which is directed towards an arc space.
  • the invention is characterized in that the hollow contact comprises a contact hole for receiving a pin contact, which opens into the arc space on a first side and is connected to a compression volume on a second side, which is also part of the hollow contact system.
  • the compression volume is limited on a side facing away from the contact bore by a stamp that is movably mounted with respect to the hollow contact system.
  • the stamp When the contacts open, the stamp performs a translational movement with respect to the hollow contact system, which causes a reduction in the compression volume.
  • the invention reduces the mechanical energy required for application a blowing pressure that is necessary to blow the arc, so that the energy of the arc itself is used in combination with a blowing from the compression volume to build up pressure.
  • the switching performance is positively influenced by the corresponding gas flow.
  • the invention further reduces the mechanical effort required for blowing and thus successfully extinguishing the switching arc by using the energy input of the switching arc to extinguish the arc.
  • gas from the blowing from the compression volume, which is reduced by the stamp is accumulated on a contact side in the self-blowing volume, thus generating an additional blowing pressure in this self-blowing volume.
  • the hollow contact system is designed to be stationary during an opening movement of the contacts and the stamp is connected to a drive system to carry out the translational movement relative to the hollow contact system. Since the hollow contact system has a larger mass than the pin contact engaging in the hollow contact, it is expedient to move the pin contact since this requires less drive energy. Therefore, the hollow contact system or the hollow contact itself is designed as a fixed contact.
  • the stamp is connected to the drive; in a further preferred embodiment of the invention, the stamp and the pin contact are connected to a single drive unit via a mechanical device.
  • the hollow contact is designed as a tulip contact, which has a rounding at its opening, which is suitable for self-centering accommodating a likewise rounded pin contact, so that in a closed state of the switch-disconnector, the pin contact at least partially engages in the contact bore of the hollow contact.
  • the insulating material nozzle is arranged around the hollow contact and preferably surrounds it concentrically.
  • the self-blow volumes in principle one self-blow volume is sufficient, but as a rule several self-blow volumes are advantageous) are arranged with their openings very close to the edge of the hollow contact, so that in a preferred embodiment a portion of the hollow contact, preferably an outer edge of the hollow contact, in turn forms part of the opening of the self-blowing volume.
  • a stamp 24 is provided, which limits the compression volume 20 on a side 22 facing away from the contact bore 16.
  • the stamp 24 carries out a translational movement in the direction of the arrow 26.
  • This translational movement 26 reduces the compression volume 20, which is indicated by the dashed line on the stamp 24 Figure 2 is shown.
  • the movement of the stamp 24 and the reduction of the compression volume 20 creates an insulating gas which is in Figure 2 illustrated by a cold gas stream 32, pressed through the contact hole 16 into the arc space 14.
  • the cold gas stream 32 splits there, part of which is directed directly at the switching arc 30 and cools it in the process.
  • a partial flow 34 of the cold gas flow runs in the direction of the self-blowing volume, which results in a pressure increase in the self-blowing volume 10.
  • the increase in pressure in the self-blowing volume 10 results, on the one hand, from the increasing amount of gas there, and, on the other hand, from the increased temperature of the former cold gas flowing in there, which is already heated by the switching arc 30.
  • the energy of the switching arc 30 is thus used to heat the former cold gas 32, which causes the pressure in the self-blasting volume 10 to rise to a critical pressure P k .
  • the critical pressure P k in the self-blow volume 10 is reached, the gas flow from the self-blow volume reverses, which leads to increased blowing of the switching arc 30 and is indicated by the arrow 36 in Figure 2 is illustrated.
  • FIG. 3 A diagram is shown purely schematically, which is based on experimental measured values, but which is shown here purely qualitatively.
  • a blowing pressure P is indicated on the This is a measure of the switching capacity of the medium-voltage switch-disconnector. A higher value means a higher breaking power.
  • the curve 48 qualitatively shows the course of this interruptible current steepness when the switching arc 30 is blown through the hollow contact 4 due to the reduction in the compression volume 20. When this curve 48 was recorded, the use of self-blowing volumes 10 was omitted. There is a continuous increase in the breaking power as the blowing pressure P increases.
  • a drive unit is preferably provided, which is designed such that the stamp 24 and the moving contact 18 are moved by a central drive unit.
  • the pin contact 18 and the stamp 24 are connected via a mechanical deflection unit, also not shown, so that the translational movement 26, which essentially also corresponds to the translational movement of the pin contact 18, is carried out synchronously.
  • Through the simultaneous movement of the Stamp 24 with the already necessary movement of the pin contact 18 can already be used drive energy to move both components synchronously.
  • the drive energy already present is also used to blow additional insulating gas into the arc space 14 and to accelerate the extinguishing of the switching arc 30.
  • the energy of the switching arc 30 is used further to fill the self-blow volumes 10 up to a critical pressure and to cause a return flow from the self-blow volumes 10.
  • This return flow which is also referred to as hot gas flow 38, also contributes to extinguishing the switching arc 30.
  • the self-blowing volumes 10 are preferably arranged rotationally symmetrically around the hollow contact 4 in such a way that the edge of the hollow contact 4, which also forms the so-called tulip, preferably represents a part of the opening 12 of the volume 10.
  • the opening 12 of the volume 10 is understood to mean not only the opening itself, but also an opening channel, which is partially formed by the outer edge of the hollow contact 4. In this way, the opening 12 is arranged very close to the point of origin of the switching arc 30 and can therefore have its greatest effect.
  • SF 6 -free gases are used as the insulating gas, whereby organofluorine compounds from the fluoronitrile or fluoroketone series can be used.
  • SF 6 -free gases are used as the insulating gas, whereby organofluorine compounds from the fluoronitrile or fluoroketone series can be used.
  • purified air clean air
  • the heat of the switching arc 30 can cause the material of the insulating material nozzle 8 to burn off, which can occur on the surface. It may be advisable to add oxygen to the insulating gas in order, for example, to bind the resulting carbon again during this combustion.
  • the ones in the Figures 1 , 2 , or 3 therefore represent a combination of extinguishing the switching arc 30 as quickly as possible and with little technical effort and low drive energy.
  • the measure of the compression volume 20 and the movement of the stamp 24 are relied upon, which is supported by the self-blowing volumes 10, which are additionally filled by the stamp movement 22.
  • the mechanical effort required to blow and successfully extinguish the switching arc 30 is thus reduced. This happens because the energy input of the switching arc 30 is used to extinguish the arc, as already described.
  • insulating gas from the blowing is supplied to the self-blowing volume 10, blown back after reaching a critical temperature and thus an additional blowing pressure is built up from the self-blowing volumes.

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  • Circuit Breakers (AREA)

Claims (7)

  1. Sectionneur à coupure en charge à moyenne tension comprenant
    - deux contacts montés mobiles l'un par rapport à l'autre, dans lequel un premier des contacts est un contact (18) à broche et le deuxième des contacts est un contact (4) creux ayant un trou (16) de contact pour la réception du contact (18) à broche,
    - un système (6) de contact creux, qui comprend le contact (4) creux et un volume (20) de compression,
    - un espace (14) d'arc électrique,
    - un poinçon (24), qui est monté mobile par rapport au système (6) de contact creux,
    dans lequel
    - le trou (16) de contact débouche d'un premier côté (17) dans l'espace (14) d'arc électrique et d'un deuxième côté (19) communique avec le volume (20) de compression,
    - le volume (20) de compression est d'un côté (22), non tourné vers le trou (16) de contact, délimité par le poinçon (24),
    - le poinçon (24) effectue, lors d'un mouvement d'ouverture des contacts (4, 18), un mouvement (26) de translation par rapport au système (6) de contact creux et provoque une diminution du volume (20) de compression,
    caractérisé par une buse (8) en matière isolante, qui entoure au moins l'un des contacts (4, 18) et comprend un volume (10) d'autoinsufflation pour la réception d'un gaz isolant, dans lequel le volume (10) d'auto-insufflation a une ouverture (12) vers l'espace (14) d'arc électrique.
  2. Sectionneur à coupure en charge à moyenne tension suivant la revendication 1, caractérisé en ce que le système (6) de contact creux est conformé de manière fixe, lors d'un mouvement d'ouverture, et le poinçon (24) est, pour l'exécution du mouvement (26) de translation par rapport au système (6) de contact creux, en liaison avec un système d'entraînement.
  3. Sectionneur à coupure en charge à moyenne tension suivant la revendication 1 ou 2, caractérisé en ce que le contact (4) creux est conformé en contact (5) tulipe.
  4. Sectionneur à coupure en charge à moyenne tension suivant l'une des revendications 1 à 3, caractérisé en ce qu'un contact (42) mobile est conformé en contact (18) à broche et, dans un état fermé du sectionneur (2) à coupure en charge, pénètre au moins en partie dans le trou (16) de contact du contact (4) creux.
  5. Sectionneur à coupure en charge à moyenne tension suivant l'une des revendications 1 à 3, caractérisé en ce que la buse (8) en matière isolante est disposée autour du contact (4) creux.
  6. Sectionneur à coupure en charge à moyenne tension suivant l'une des revendications 2 à 5, caractérisé en ce que le poinçon (24) et le contact (18) à broche sont montés mobiles en étant accouplés par un groupe d'entraînement.
  7. Sectionneur à coupure en charge à moyenne tension suivant l'une des revendications précédentes, caractérisé en ce que l'ouverture (12) du volume (10) d'auto-insufflation est formée au moins en partie par une région partielle du contact (4) creux.
EP20710860.6A 2019-05-10 2020-03-05 Sectionneur à coupure en charge à moyenne tension Active EP3948912B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019206807.3A DE102019206807A1 (de) 2019-05-10 2019-05-10 Mittelspannungs-Lasttrennschalter
PCT/EP2020/055866 WO2020229011A1 (fr) 2019-05-10 2020-03-05 Interrupteur-sectionneur à moyenne tension

Publications (2)

Publication Number Publication Date
EP3948912A1 EP3948912A1 (fr) 2022-02-09
EP3948912B1 true EP3948912B1 (fr) 2023-12-20

Family

ID=69804859

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20710860.6A Active EP3948912B1 (fr) 2019-05-10 2020-03-05 Sectionneur à coupure en charge à moyenne tension

Country Status (4)

Country Link
EP (1) EP3948912B1 (fr)
CN (1) CN113966542A (fr)
DE (1) DE102019206807A1 (fr)
WO (1) WO2020229011A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4024425A1 (fr) * 2020-12-28 2022-07-06 Fritz Driescher KG Spezialfabrik für Elektrizitätswerksbedarf GmbH & Co. Dispositif de commutation pourvu d'élément buse mobile

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR828466A (fr) * 1937-01-28 1938-05-18 Alsthom Cgee Perfectionnement apporté aux interrupteurs, à soufflage de l'arc par gaz sous pression, fonctionnant en auto-compresseurs
CH556602A (de) * 1973-01-12 1974-11-29 Sprecher & Schuh Ag Druckgasschalter.
JPS52133575A (en) * 1976-05-04 1977-11-09 Hitachi Ltd Buffer gas breaker
DE3440212A1 (de) * 1984-10-10 1986-04-17 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter
CN1008415B (zh) * 1985-09-30 1990-06-13 Bbc勃朗勃威力有限公司 气吹开关
JPH11213827A (ja) * 1998-01-22 1999-08-06 Hitachi Ltd パッファ式ガス遮断器
JP4174094B2 (ja) * 1998-01-29 2008-10-29 株式会社東芝 ガス遮断器
WO2006021108A1 (fr) * 2004-08-23 2006-03-02 Abb Technology Ag Disjoncteur a haut pouvoir de coupure
JP2006164673A (ja) * 2004-12-06 2006-06-22 Hitachi Ltd パッファ形ガス遮断器の電流遮断方法およびそれに用いるパッファ形ガス遮断器
FR2906929B1 (fr) * 2006-10-09 2009-01-30 Areva T & D Sa Actionnement par des contacts d'une chambre de coupure a double mouvement par un tube isolant
DE102013200913A1 (de) * 2013-01-22 2014-07-24 Siemens Aktiengesellschaft Schaltanordnung
MX2016008054A (es) * 2013-12-23 2016-10-12 Abb Technology Ag Dispositivo de encendido electrico.
DE102015218003A1 (de) * 2015-09-18 2017-03-23 Siemens Aktiengesellschaft Mittel- oder Hochspannungsschaltanlage mit einem gasdichten Isolierraum
EP3465717B1 (fr) * 2016-06-03 2020-08-05 ABB Schweiz AG Disjoncteur basse ou moyenne tension isolé par du gaz
EP3261107A1 (fr) * 2016-06-20 2017-12-27 ABB Schweiz AG Commutateur de basse ou moyenne tension à isolation gazeuse avec dispositif de turbulence
DE102016219812A1 (de) * 2016-10-12 2018-04-12 Siemens Aktiengesellschaft Schaltanordnung

Also Published As

Publication number Publication date
CN113966542A (zh) 2022-01-21
DE102019206807A1 (de) 2020-11-12
EP3948912A1 (fr) 2022-02-09
WO2020229011A1 (fr) 2020-11-19

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