EP1691389B1 - Chambre de coupure pour disjoncteur haute tension à isolation gazeuse - Google Patents

Chambre de coupure pour disjoncteur haute tension à isolation gazeuse Download PDF

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Publication number
EP1691389B1
EP1691389B1 EP05405061A EP05405061A EP1691389B1 EP 1691389 B1 EP1691389 B1 EP 1691389B1 EP 05405061 A EP05405061 A EP 05405061A EP 05405061 A EP05405061 A EP 05405061A EP 1691389 B1 EP1691389 B1 EP 1691389B1
Authority
EP
European Patent Office
Prior art keywords
switching chamber
hollow body
chamber according
contact
housing
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.)
Not-in-force
Application number
EP05405061A
Other languages
German (de)
English (en)
Other versions
EP1691389A1 (fr
Inventor
David Saxl
Markus Vestner
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.)
ABB Technology AG
Original Assignee
ABB Technology AG
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
Priority to EP05405061A priority Critical patent/EP1691389B1/fr
Application filed by ABB Technology AG filed Critical ABB Technology AG
Priority to DE502005011212T priority patent/DE502005011212D1/de
Priority to AT05405061T priority patent/ATE504933T1/de
Priority to CN2006800044982A priority patent/CN101116163B/zh
Priority to PCT/CH2006/000035 priority patent/WO2006084398A1/fr
Priority to JP2007554409A priority patent/JP2008530739A/ja
Publication of EP1691389A1 publication Critical patent/EP1691389A1/fr
Priority to US11/833,373 priority patent/US7507931B2/en
Application granted granted Critical
Publication of EP1691389B1 publication Critical patent/EP1691389B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H01H33/02—Details
    • H01H33/24—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring
    • 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
    • H01H33/02—Details
    • H01H33/025—Terminal arrangements
    • 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
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts

Definitions

  • the present invention relates to a switching chamber for a gas-insulated high-voltage switch according to the preamble of claim 1.
  • a switching chamber includes an axially symmetrical housing formed and held in the housing contact arrangement with two switching pieces, one of which is arranged along the housing axis movable.
  • the switching chamber housing has two hollow bodies of electrically conductive material and an insulating tube, which keeps the two hollow bodies in the direction of the housing axis at a distance.
  • the switching chamber is at high voltage potential and is particularly exposed when switched off strong electric fields. Since the switching chamber also absorbs the hot arc gases formed during a switching operation, it is also exposed to great mechanical and thermal stresses at the same time.
  • the switching chamber is preferably used in gas-insulated high-voltage switches with a insulating gas-filled, contact-protected container.
  • a switching chamber of the type mentioned is described in US Pat. No. 6,495,785 B1 ,
  • This switching chamber is disposed in an insulating gas-filled metal container and has a supported by a support insulator 50 axially symmetrical housing in which a contact arrangement with a fixed and an axially movable contact piece is arranged.
  • the switching chamber housing is formed by two electrically conductive hollow bodies 43, 44, mounting ears and flanges 51, which are fastened to the hollow bodies, and by an insulating tube 50 fastened to the mounting parts 51, which guides the hollow bodies in the direction Keep the housing axis at a distance.
  • the hollow body 43 is connected to a movable and the hollow body 44 with a fixed contact piece of the contact arrangement.
  • the two outdoor bushings 41, 42 are placed at high voltage current conductors 45, 47 guided from the outside through the wall of the container 40.
  • the located in the container interior ends of the current conductors 45, 47 are guided to form two electrical connectors in holes, which are formed in the hollow bodies 43, 44.
  • the two hollow bodies shield dielectric heavily loaded areas on the insulating tube 50 and the support insulator 50 and contain exhaust volumes for receiving hot switching arc gases.
  • the object of the invention is to provide a switching chamber of the type mentioned and a gas-insulated high-voltage switch containing this switching chamber, which are characterized by a high reliability with a simple structure.
  • an electrically shielded during operation of the switch separation zone is formed, which separates two surface zones of different roughness from each other in the hollow body.
  • Such a trained Switching chamber and equipped with a high-voltage switch are characterized by a high dielectric strength and, accordingly, by a high reliability.
  • a high dielectric strength requires hollow body with a low surface roughness.
  • the hollow bodies are generally produced as a metal casting and therefore may have roughness depths in the range of 100 and more microns
  • the outer surface of the casting in the dielectric critical areas by machining, in particular turning, milling and / or grinding, and / or by one or more non-machining operations, especially polishing, shot peening, sandblasting, hammering and / or polishing, considerably be reduced.
  • the surface is partially smoothed to surface roughness of a few microns are achieved. This resulting inhomogeneities at the common boundary of the surface zone high and the surface zone of low roughness are now in the electrically shielded separation zone and can no longer reduce the dielectric strength of the switching chamber and thus equipped switch.
  • a particularly effective shielding of the dielectric critical transition region is achieved when the separation zone is formed as a ring extending around the housing axis depression. If the hollow bodies are designed as cast metal parts, then such a depression can be produced directly by casting during selection of a suitable casting mold.
  • a simplification of the construction of the switching chamber while maintaining a high level of operational reliability is achieved in that one end of the insulating tube is mounted with its lateral surface on a guided around the housing axis portion of the inner surface of both hollow body and connected to the bearing point with the hollow body.
  • the connecting means are advantageously arranged in the separation zone.
  • a further simplification of the switching chamber while increasing their reliability is achieved with a hollow body, in the inner surface of a guide ring and / or a contact ring are mounted, which rest on one of the leadership of the switch current and formed as a blow cylinder of a compression device part of the movable contact piece.
  • the switching chamber can be easily and safely connected to a high-voltage current source, if in the lateral surface of the at least one hollow body, a contact surface is formed for supporting a hollow body fixable power connection.
  • the contact surface of the hollow body is integrated into the surface zone of lower roughness.
  • the single figure shows a plan view of an axially guided section through an embodiment of a switching chamber according to the invention with an axially symmetrical and a contact arrangement receiving housing.
  • a switching chamber for a gas-insulated high voltage switch contains a with an insulating gas, such as based on nitrogen and / or sulfur hexafluoride, filled and largely axially symmetric designed housing 1 and a recorded from the switching chamber housing 1 and also largely axially symmetrical designed contact assembly 2.
  • the closed contact arrangement 2 has two switching pieces 3, 4th on, of which the switching piece 3 along the housing axis 5 arranged to be movable and the switching piece 4 is held stationary in the housing 1.
  • the switching piece 4 does not necessarily have to be fixed, it may also be designed to be movable.
  • the housing 1 is formed by two hollow bodies 7, 8 of electrically conductive material, which are rigidly connected to one another via an insulating tube 6. These hollow bodies are generally made of a cast metal, for example based on steel or aluminum, and absorb the exhaust gases formed during a switching operation in the contact arrangement 2.
  • the hollow body 7 can be connected via a power connection 9 and the hollow body 8 via a power connection 10 to high voltage. When the contact arrangement 2 is closed, the hollow bodies 7, 8 conduct current fed to the power connections 9, 10 Contact arrangement 2.
  • this current is transmitted via a contact ring 11 mounted in a section of the inner surface of the hollow body 7 to a metal blowing cylinder 12 and thus to a rated current contact 13 in the manner of a hollow cylinder and to a tubular contact 14 coaxially penetrating the rated current contact 13 the switching piece 3 out.
  • the current is passed directly to a likewise hollow-cylindrical rated current contact 15 and a designed as a pencil arcing contact 16 of the contact piece 4.
  • the blowing cylinder 12 is part of a compression device, which also comprises a fixedly mounted on the switching chamber housing 1, annularly executed blow piston 17 and which blows when opening the contact assembly 2 fresh quenching gas in an arc formed when opening between the two arc contacts 14, 16.
  • a safe displacement of the blowing cylinder 12 and at the same time protection of the contact ring 11 is ensured by a bearing in a subsequent section of the inner surface of the hollow body 7 guide ring 18.
  • the lower end of the insulating tube 6 is mounted with an end portion of its lateral surface and rigidly connected via connecting means 19, such as screws, rivets or splices, with the hollow body 7.
  • the upper end of the insulating tube 6 is connected to a formed in the insulating support ring 20, to which the switching piece 4 is mounted in an electrically conductive manner.
  • the switching chamber housing 1 is mounted on a hollow support insulator 21, which in turn is held on a flange 22 of an insulating gas-filled, the switching chamber receiving metal container.
  • An insulating rod 23 is fixed at its upper end to the lower end of the hollow arcing contact 14. At its no longer apparent lower end of the insulating rod 23 is one with Fig.1 also not apparent drive connected.
  • An enclosed by the hollow body 7 exhaust volume 24 is axially through the blowing cylinder 12 and the blow piston 17, respectively.
  • a transverse wall 25 bounded and inwardly by the gas-tight through the blow piston 17 and the transverse wall 25 guided arcing contact 14.
  • a passage opening 26 is formed, which is located below the blow piston 17 and connects the interior of the sealed by a metal insert 31 gas-tight downward arc contact 14 with the exhaust volume 24.
  • An enclosed by the hollow body 8 exhaust volume 27 is axially through a radially guided wall of the hollow body 7, respectively. an attached to the movable contact 3 insulating nozzle 28 limited.
  • In the walls of the hollow body 7, 8 provided through openings 29, respectively. 30 connect the exhaust volumes 24 respectively. 27 with an enclosed by the container, not shown Isoliergasvolumen.
  • the hollow body 7 and 8 but also fulfill the function of controlling an electric field, which in the closed contact assembly 2 between the switching chamber housing 1 and the environment, such as the switching chamber housing receiving and the flange 22 having container acts. When switching off, this electric field additionally acts between the two separate contact pieces 3 and 4.
  • dielectric critical transition regions are effectively shielded.
  • Such dielectric critical transition regions are favored by the smoothing of the surface zones 71a, 72a, 81a, 82a of a hollow body 7, 8 removed from a casting mold although at the border between unsmoothed and smoothed (cast) surface.
  • the surface zones of low roughness are, above all, the mutually facing end faces of the hollow bodies 7, 8 which are connected to one another via the insulating material 6, but also the ends of the switching chamber housing 1, in particular the front side of the hollow body 7 facing the support insulator 21 and the insulating rod 23.
  • the separation zones are generally designed in each case as a recess extending annularly around the housing axis 5.
  • the unsmooth surface zone 71b or 81b immediately formed during casting of the hollow bodies 7, 8 can merge into the smoothed surface zone, for example 72a and 81a, without the dielectrically critical transition at the boundary between smoothed surface and unsmoothed surface zone can be effective.
  • parts, such as the connection means 19, can be arranged in the electrically shielded depression, which parts may otherwise reduce the dielectric strength at this point.
  • the passage openings 29 and 30 are molded into the hollow bodies 7 and 8 at the surface zones 71b and 81b which can be loaded with lower electrical field strengths. In order to avoid unwanted field increases, these passages each one in the exhaust volume 24, respectively. 27 directed securing edge, which, however, is visible only at the opening 29.
  • the lateral surfaces of the hollow body 7 and 8 are also two non-designated, flat or curved contact surfaces, which the support of the hollow body 7, respectively. 8 fixable power connection 9 or 10 serve. In the two power connections lying counter contact surfaces are formed on the two contact surfaces. These measures ensure a good current transfer from the power connection 9 or 10 to the switching chamber. Since the smoothed contact surface of the hollow body 7 is integrated into the surface zone 71 a, the production of this contact surface is unnecessary in manufacturing technology advantageous manner. As shown in the power connector 10, a current transition can basically also in an unsmoothed Surface zone, here 81b, on the hollow body, here 8, are fixed, but then the contact surface is made by smoothing a portion of this surface zone.

Landscapes

  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (10)

  1. Compartiment de commutation pour un interrupteur à haute tension isolé au gaz, contenant un boîtier (1) configuré de façon axisymétrique et une installation de contacts (2) maintenue dans le boîtier (1), avec deux pièces de contact (3, 4), dont au moins une est disposée de façon déplaçable le long de l'axe du boîtier (5), le boîtier du compartiment de commutation (1) présentant deux corps creux (7, 8) pouvant être soumis à de la haute tension fabriqués en tant que pièce moulée métallique et un tube de matière isolante (6) maintenant les corps creux (7, 8) à distance axialement, caractérisé en ce que dans la surface d'au moins un des deux corps creux (7, 8) est formée une première zone de séparation (71, 72, 81, 82) blindée électriquement lors du fonctionnement de l'interrupteur, laquelle sépare l'une de l'autre deux zones de surface (71a, 71b ; 72a, 71b ; 81a, 81b ; 82a, 81b) de rugosités différentes dans le corps creux (7, 8).
  2. Compartiment de commutation selon la revendication 1, caractérisé en ce que la première zone de séparation (71, 72, 81, 82) est réalisée en tant qu'évidement s'étendant en forme d'anneau autour de l'axe du boîtier (5).
  3. Compartiment de commutation selon l'une des revendications 1 ou 2, caractérisé en ce qu'une extrémité du tube de matière isolante (6) est montée avec la surface d'enveloppe sur un premier tronçon faisant le tour de l'axe du boîtier (5) de la surface intérieure d'un premier (7) des deux corps creux (7, 8) et est reliée au premier corps creux (7) à l'emplacement de montage.
  4. Compartiment de commutation selon la revendication 3, caractérisé en ce que les moyens de liaison (19) sont disposés dans la première zone de séparation (72).
  5. Compartiment de commutation selon l'une des revendications 3 ou 4, caractérisé en ce que dans un deuxième tronçon de la surface intérieure du premier corps creux (7), une bague de guidage (18) et/ou une bague de contact (11) sont montées, lesquelles reposent sur une partie de la pièce de contact (3) déplaçable servant à conduire le courant de commutateur et réalisée en tant que cylindre de soufflage (12) d'un dispositif de compression.
  6. Compartiment de commutation selon l'une des revendications 1 à 5, caractérisé en ce que dans ledit au moins un corps creux (7, 8) une ouverture de passage (29, 30) est formée, laquelle est guidée par la zone de surface (71b, 81b) présentant une plus grande rugosité dans l'intérieur du corps creux (7, 8) prévu pour la réception des gaz d'échappement, et présente un bord de sécurité orienté vers l'intérieur.
  7. Compartiment de commutation selon l'une des revendications 1 à 6, caractérisé en ce que dans ledit au moins un corps creux (7, 8) une deuxième zone de séparation (71, 72, 81, 82) est formée, laquelle sépare la zone de surface à plus grande rugosité (71b, 81b) de la zone de surface à moins grande rugosité (71a, 72a, 81a, 82a).
  8. Compartiment de commutation selon l'une des revendications 1 à 7, caractérisé en ce que dans la surface d'enveloppe dudit au moins un corps creux (7, 8) est formée une surface de contact pour l'appui d'une prise de courant (9, 10) pouvant être fixée sur le corps creux.
  9. Compartiment de commutation selon la revendication 8, caractérisé en ce que la surface de contact est intégrée dans la zone de surface à moins grande rugosité (71a).
  10. Interrupteur à haute tension avec un compartiment de commutation selon l'une des revendications 1 à 9.
EP05405061A 2005-02-10 2005-02-10 Chambre de coupure pour disjoncteur haute tension à isolation gazeuse Not-in-force EP1691389B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE502005011212T DE502005011212D1 (de) 2005-02-10 2005-02-10 Schaltkammer für einen gasisolierten Hochspannungsschalter
AT05405061T ATE504933T1 (de) 2005-02-10 2005-02-10 Schaltkammer für einen gasisolierten hochspannungsschalter
EP05405061A EP1691389B1 (fr) 2005-02-10 2005-02-10 Chambre de coupure pour disjoncteur haute tension à isolation gazeuse
PCT/CH2006/000035 WO2006084398A1 (fr) 2005-02-10 2006-01-16 Chambre de commutation pour un interrupteur a haute tension isole par rapport aux gaz
CN2006800044982A CN101116163B (zh) 2005-02-10 2006-01-16 用于气体绝缘高压断路器的开关室
JP2007554409A JP2008530739A (ja) 2005-02-10 2006-01-16 ガス絶縁式高電圧サーキット・ブレーカのためのスイッチング・チャンバ
US11/833,373 US7507931B2 (en) 2005-02-10 2007-08-03 Switching chamber for a gas-insulated high-voltage circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05405061A EP1691389B1 (fr) 2005-02-10 2005-02-10 Chambre de coupure pour disjoncteur haute tension à isolation gazeuse

Publications (2)

Publication Number Publication Date
EP1691389A1 EP1691389A1 (fr) 2006-08-16
EP1691389B1 true EP1691389B1 (fr) 2011-04-06

Family

ID=34942905

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05405061A Not-in-force EP1691389B1 (fr) 2005-02-10 2005-02-10 Chambre de coupure pour disjoncteur haute tension à isolation gazeuse

Country Status (7)

Country Link
US (1) US7507931B2 (fr)
EP (1) EP1691389B1 (fr)
JP (1) JP2008530739A (fr)
CN (1) CN101116163B (fr)
AT (1) ATE504933T1 (fr)
DE (1) DE502005011212D1 (fr)
WO (1) WO2006084398A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE508466T1 (de) 2006-03-14 2011-05-15 Abb Technology Ag Schaltkammer für einen gasisolierten hochspannungsschalter
DE102010005090A1 (de) 2010-01-15 2011-07-21 Siemens Aktiengesellschaft, 80333 Schaltkammer für einen Leistungsschalter sowie Leistungsschalter mit Schaltkammer
FR2982412B1 (fr) * 2011-11-03 2014-12-26 Alstom Technology Ltd Appareillage electrique comportant des moyens pour limiter la formation d'un arc electrique
DE102012200238A1 (de) 2012-01-10 2013-07-11 Siemens Aktiengesellschaft Elektrisches Schaltgerät
JP6270441B2 (ja) * 2013-11-29 2018-01-31 株式会社東芝 ガス遮断器
KR101613992B1 (ko) * 2014-04-09 2016-04-21 현대중공업 주식회사 가스절연 차단기
EP3149757B1 (fr) * 2014-06-02 2018-08-08 ABB Schweiz AG Interrupteur de haute tension à soufflage de gaz et unité de disjoncteur comprenant un tel interrupteur à soufflage de gaz
KR101701817B1 (ko) * 2015-06-08 2017-02-03 현대중공업 주식회사 가스절연 차단기
JP2021511769A (ja) * 2018-01-15 2021-05-06 セシュロン ソシエテ アノニム 電気開閉装置
CN112951523B (zh) * 2021-01-19 2023-09-05 中车株洲电力机车有限公司 一种绝缘子

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1081107A (fr) * 1951-08-16 1954-12-16 Westinghouse Electric Corp Perfectionnements aux interrupteurs électriques
US3670287A (en) * 1970-08-17 1972-06-13 Westinghouse Electric Corp Electrical connector assembly
US3911239A (en) * 1974-03-28 1975-10-07 Gen Electric Vacuum arc devices with non-welding contacts
JPS59104764A (ja) * 1982-12-03 1984-06-16 Canon Inc 液晶表示キ−ボ−ド
DE4217697A1 (de) 1992-03-23 1993-09-30 Siemens Ag Elektrischer Hochspannungs-Leistungsschalter
FR2808618B1 (fr) * 2000-05-03 2002-06-14 Alstom Disjoncteur comportant, dans une enveloppe remplie d'un gaz dielectrique sous pression, un ensemble mobile
US6495785B1 (en) * 2000-06-29 2002-12-17 Abb Power T&D Company Inc. Non-glue mounting of non-metallic tubes

Also Published As

Publication number Publication date
DE502005011212D1 (de) 2011-05-19
ATE504933T1 (de) 2011-04-15
JP2008530739A (ja) 2008-08-07
EP1691389A1 (fr) 2006-08-16
US7507931B2 (en) 2009-03-24
CN101116163A (zh) 2008-01-30
WO2006084398A1 (fr) 2006-08-17
CN101116163B (zh) 2012-05-02
US20070272659A1 (en) 2007-11-29

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