EP1835520B1 - Chambre d'interruption pour interrupteur haute tension isolé à gaz - Google Patents

Chambre d'interruption pour interrupteur haute tension isolé à gaz Download PDF

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Publication number
EP1835520B1
EP1835520B1 EP06405112A EP06405112A EP1835520B1 EP 1835520 B1 EP1835520 B1 EP 1835520B1 EP 06405112 A EP06405112 A EP 06405112A EP 06405112 A EP06405112 A EP 06405112A EP 1835520 B1 EP1835520 B1 EP 1835520B1
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EP
European Patent Office
Prior art keywords
pot
switching chamber
exhaust
housing
chamber according
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
EP06405112A
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German (de)
English (en)
Other versions
EP1835520B2 (fr
EP1835520A1 (fr
Inventor
Nicola Gariboldi
Markus Vestner
Stephan Grob
Joachim Stechbarth
Max Claessens
Xiangyang Ye
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
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ABB Technology AG
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Publication date
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Application filed by ABB Technology AG filed Critical ABB Technology AG
Priority to DE502006009434T priority Critical patent/DE502006009434D1/de
Priority to AT06405112T priority patent/ATE508466T1/de
Priority to EP06405112.1A priority patent/EP1835520B2/fr
Publication of EP1835520A1 publication Critical patent/EP1835520A1/fr
Application granted granted Critical
Publication of EP1835520B1 publication Critical patent/EP1835520B1/fr
Publication of EP1835520B2 publication Critical patent/EP1835520B2/fr
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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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
    • H01H33/74—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber wherein the break is in gas
    • 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
    • H01H2033/888—Deflection of hot gasses and arcing products

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 a longitudinal axis aligned, axially symmetrical housing formed and held in the housing arcing contact arrangement.
  • An exhaust unit is integrated into the housing with an exhaust volume limited by the housing and an outlet for exhaust gases guided through the housing.
  • This switching chamber is inserted into a contact-protected, insulating gas-filled metal container of a high-voltage switch. When operating the switch, the switching chamber is at high voltage potential. When switching off a short-circuit current hot exhaust gases generated by the switching arc through the outlet of the exhaust unit in the metal container and thus locally reduce temporarily the quality of the existing in the metal container insulating gas.
  • 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 axially symmetric housing in which an arcing contact arrangement is arranged.
  • the switching chamber housing is formed by an insulating tube and two, attached to both ends of the insulating, electrically conductive hollow bodies. Each of the two hollow bodies is connected to one of two guided through the metal container conductors and one of two contacts of the arcing contact arrangement electrically conductive and limits an exhaust volume for receiving hot switching arc gases, which can pass through an outlet in the metal container.
  • EP 1605485 A also discloses a switching chamber according to the preamble of claim 1.
  • the object is to provide a switching chamber of the type mentioned and a high-voltage switch containing this switching chamber, which are characterized by high reliability.
  • a designed in the manner of a pot exhaust module in a coaxial arrangement is placed over the exhaust unit and limit the housing and the pot a flow path for the exhaust gases with an electrically shielded, axially aligned discharge opening.
  • Exhaust gases formed when switching off a high-power short-circuit current through the switching arc thus occur predominantly flowing in the axial direction and guided along the housing of the switching chamber in the container containing fresh insulating gas.
  • the exhaust gases can therefore mix over a long way and a large period of time with the fresh insulating gas. It is thus avoided that comparatively poorly insulating, hot exhaust gases reach the vessel wall directly, in particular in the radial direction.
  • An exhaust unit which is dimensioned only for a comparatively low arc work of the switch can therefore be subsequently adapted with the aid of the module designed as a pot to a switch dimensioned for a higher arc work.
  • Higher arc work can be caused by higher short-circuit currents or by a longer arc duration up to the current zero crossing, as they occur with a frequency change of, for example, 60 Hz to 50 Hz or even 16 2/3 Hz.
  • the outflow opening is designed as an annular gap, in addition to the emission of the exhaust gases in the axial direction, a uniform distribution of the exhaust gases in the container is achieved at the same time. Because of the predetermined by the annular gap cylinder symmetry provided for electrical shielding of the annular gap means can be produced with little effort and with good shielding effect.
  • An annular end portion of the pot wall which delimits the annular gap to the outside, tapers with advantage to the edge of the pot and then has an outer surface which merges into the inner surface of the end section without edges, forming the pot rim.
  • a strong electric field thus acts only in the dielectrically uncritical region between the container wall and a portion of the pot wall remote from the mouth of the annular gap. Since there is fresh insulating gas in this area, this strong electric field is not critical. Starting from this area, the electric field strength on the way to the pot edge is considerably reduced because of the tapered end section of the pot wall. The reduced there by admixing comparatively small amounts of exhaust gases dielectric strength of the insulating gas is therefore also sufficiently large in this area. Because of the edge-free held surfaces of the annular gap in the region of its mouth into the metal container unwanted high local electric field strengths are avoided there and achieved a good dielectric strength despite the presence of hot exhaust gases of low density.
  • the limited by the housing and the pot flow path may contain an additional volume.
  • the exhaust volume of the inventive switching chamber then has a particularly large volume. For a given outflow of the resulting exhaust gases, the exhaust unit is then relieved pressure and can be such a further developed switching chamber switch containing even then safely switch off when a very large arc work is implemented in the switching arc.
  • the pot can be made by casting, sheet metal or sheet metal welding and releasably connected to the exhaust unit.
  • the maximum arc work which can still be controlled in the case of a switching chamber with a predetermined nominal data during a switch-off process can thus be increased considerably considerably by retrofitting with the pot acting as an exhaust module.
  • At least two openings are provided in the bottom of the pot, of which a first of the implementation of a guided along the axis conductor and the second opening of the implementation of means for releasably connecting the pot to the Exhaust unit is used.
  • the thus realized embodiment of the switching chamber can be charged after installation in the metal container because of axially guided and mainly centrally arranged components, such as conductors and connecting means, advantageously with a high electric field.
  • the releasable connection can be formed by screwing, clamping or pressing.
  • the single figure shows a plan view of a guided along an axis section through a portion of a gas-insulated high-voltage switch with a switching chamber according to the invention.
  • the switch pole shown in the single figure includes one with an insulating gas, such as sulfur hexafluoride, nitrogen, oxygen or carbon dioxide, or mixtures of these gases, such as air, with a pressure of up to several gases, such as sulfur hexafluoride, nitrogen, oxygen or carbon dioxide, or mixtures of these gases, such as air, with a pressure of up to several gases, such as sulfur hexafluoride, nitrogen, oxygen or carbon dioxide, or mixtures of these gases, such as air, with a pressure of up to several gases, such as sulfur hexafluoride, nitrogen, oxygen or carbon dioxide, or mixtures of these gases, such as air, with a pressure of up to several gases, such as nitrogen, oxygen or carbon dioxide, or mixtures of these gases, such as air, with a pressure of up to several gases, such as nitrogen, oxygen or carbon dioxide, or mixtures of these gases, such as air, with a pressure of up to several gases, such as nitrogen, oxygen or carbon dioxide, or mixtures of these gases, such as air, with
  • the switching chamber 2 Bar filled and largely tubular shaped metal container 1, in which a switching chamber 2 is arranged.
  • the switching chamber is held electrically isolated in the metal container 1 by means of a not visible from the figure support insulator.
  • the switching chamber 2 includes a housing 3 which is substantially symmetrical with respect to an axis A, and inside the housing holds an arcing contact assembly 4 with two relatively movable arcing contacts 5, 6.
  • the switching chamber housing also accommodates a rated current contact arrangement provided for guiding the continuous current and connected in parallel with the arcing contacts 5, 6, but this is not shown for reasons of clarity.
  • the switching chamber housing is formed by an insulating tube 7 and two at the ends gas-tight fastened metal hollow bodies, of which only the upper end of the housing 3 forming the first hollow body 8 is shown.
  • the second hollow body, not shown, forms the lower end of the housing 1 and is mounted on the also not apparent support insulator.
  • the two hollow bodies are generally made of cast metal, for example based on steel or aluminum, and are used to hold hot exhaust gases 24 which are formed in a switching operation in the contact assembly 4 and the leadership of the switch current and the shielding of parts of the switching chamber 2, the short-circuit currents which occur during operation of the switch, ie when subjected to high voltages up to a hundred kV and when carrying 50 and more kA, are exposed to strong electric fields.
  • the hollow body 8 is part of an exhaust unit 9.
  • This exhaust unit has an exhaust volume 10 delimited by the hollow body 8, a gas mixing device 11 arranged in the exhaust volume and an outlet 12 realized through openings in the hollow body 8 through which the exhaust gases 24 are expelled radially outward from the exhaust volume 10 can be dissipated.
  • the switch current is fed from above through a current-conducting bolt 13, which is electrically connected in a cup-shaped sleeve 14.
  • the bottom of the cup resp. the sleeve 14 carries the gas mixing device 11.
  • the edge of the cup is guided radially outward and fixed by means of screw 15 to a border which limits an axially aligned opening of the hollow body 8, through which the pin 13 is guided to the outside.
  • a trained in the manner of a pot 16 exhaust module is placed in a coaxial arrangement.
  • the bottom of the pot 16 is seated on an upwardly facing end face of the hollow body 8 and has an axially aligned opening 17, through which the bolt 13 is guided. In the bottom not designated further openings are provided through which screws of the screw 15 are guided.
  • the pot is so releasably fixed to the exhaust unit 9.
  • the axially oriented wall 18 of the pot 16 is arranged at a distance from the hollow body 8 and extends over the outlet 12 away down. It is so formed by the hollow body 8 and the pot wall 18 additional volume 19 is formed, which communicates via the outlet 12 with the exhaust volume 10 and a designed as an annular gap 20 discharge opening with the interior of the metal container 1.
  • the annular gap 20 is limited to the outside by an annular end portion 21 of the pot wall 18.
  • the end portion 21 tapers towards the downwardly facing edge of the pot 16 and has an outer surface 22 which merges into the inner surface of the end portion 21 free of edges to form the pot edge.
  • the annular gap 20 is effectively shielded against a strong electric field, which acts during operation of the switch between the then at ground potential metal container 1 and then lying at high voltage potential switching chamber 2.
  • An appropriately acting pot can also be arranged on the non-illustrated, the lower end of the switching chamber housing 3 forming hollow body.
  • the arcing contact 5 When a short-circuit current is switched off, the arcing contact 5 is moved downwards by a drive 23 acting in the direction of the arrow. Between the opening contacts 5, 6 of the arcing contact arrangement 4, a switching arc S fed by the current to be disconnected is drawn. This arc heats surrounding insulating gas and can be extinguished at the zero crossing of the current. Hot gases formed by the switching arc S reach the exhaust unit 9 as exhaust gases 24 and are there precooled at the gas mixing device 11 and subsequently removed via the outlet 12 from the exhaust unit.
  • annular gap 20 opens into an electrically well-shielded area in the interior of the metal container 1
  • exhaust gases 24 also leaving the annular gap 20 flowing in the axial direction and along the switching chamber housing 3 guided a large distance to the wall of the metal container 1 comply the initially unfavorable insulating properties of the exiting exhaust gases 24 reduce the gas insulation between grounded metal container 1 and lying at high voltage potential switching chamber 2 only slightly.
  • the exhaust gases 24 can mix over a long way and a long time with the fresh insulating gas.
  • exhaust module By designed as a pot 16 and suitably arranged on the exhaust unit 9 exhaust module is therefore avoided that comparatively poorly insulating, hot exhaust gases 24 directly, especially in the radial direction, reach the grounded wall of the metal container 1, and that by shielding the annular gap as the 20th formed outflow opening at points where due to the high flow velocity of the exhaust gases, the gas density is relatively small and thus the insulating properties of the gas are rather low, the effect of prevailing in the metal container 1 strong electric field is suppressed. Therefore, an exhaust unit dimensioned only for a comparatively low arc work of the switch can be subsequently adapted to a switch dimensioned for a higher arc work. Such higher arc work can be caused by higher short-circuit currents and / or by a longer arc length to zero current, as they occur at a frequency change of, for example 60 Hz to 50 Hz or even 16 2/3 Hz.
  • the additional volume 19 increases the volume of the exhaust volume 10 and thus reduces the high pressure caused by the large arc work high pressure of the exhaust gases in the exhaust unit.

Landscapes

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

Claims (10)

  1. Chambre d'interruption (2) à monter dans une enceinte métallique (1) remplie de gaz isolant d'un interrupteur haute tension, avec
    un boîtier (3) à symétrie axiale, orienté le long d'un axe (A), un arrangement de contacts d'arc (4) contenu dans le boîtier et une unité d'échappement (9) intégrée dans le boîtier, qui présente un volume d'échappement (10) délimité par le boîtier (3) et une sortie (12) menée à travers le boîtier pour les gaz d'échappement (24),
    caractérisée en ce qu'un module d'échappement réalisé à la manière d'un pot (16) est emboîté sur l'unité d'échappement en un arrangement coaxial et en ce que le boîtier (3) et le pot (16) délimitent un chemin d'écoulement (25) pour les gaz d'échappement (24) avec une ouverture de sortie orientée en direction axiale et électriquement protégée.
  2. Chambre d'interruption selon la revendication 1, caractérisée en ce que l'ouverture de sortie se présente sous la forme d'une fente annulaire (20).
  3. Chambre d'interruption selon la revendication 2, caractérisée en ce qu'une partie d'extrémité annulaire (21) de la paroi de pot (18), qui délimite la fente annulaire (20) vers l'extérieur, se rétrécit en direction du bord du pot (16) et présente une surface extérieure (22), qui se prolonge sans arête dans la surface intérieure de la partie d'extrémité (21) en formant le bord du pot.
  4. Chambre d'interruption selon l'une quelconque des revendications 1 à 3, caractérisée en ce que le chemin d'écoulement (25) contient un volume additionnel (19).
  5. Chambre d'interruption selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le pot (16) est fabriqué par coulée, déformation de tôle ou soudage de tôles.
  6. Chambre d'interruption selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le pot (16) est assemblé de façon séparable à l'unité d'échappement (9).
  7. Chambre d'interruption selon la revendication 6, caractérisée en ce qu'il est prévu dans le fond du pot (16) une première ouverture (17), qui sert pour le passage d'un conducteur de courant (13) mené le long de l'axe (A).
  8. Chambre d'interruption selon la revendication 7, caractérisée en ce qu'il est prévu dans le fond du pot (16) au moins une deuxième ouverture, qui sert pour le passage d'un moyen destiné à assembler de façon séparable le pot (16) à l'unité d'échappement (9).
  9. Chambre d'interruption selon la revendication 8, caractérisée en ce que l'assemblage séparable est formé par vissage, serrage ou pressage.
  10. Interrupteur haute tension avec une chambre d'interruption selon l'une quelconque des revendications 1 à 9 disposée dans une enceinte métallique tubulaire remplie de gaz isolant.
EP06405112.1A 2006-03-14 2006-03-14 Chambre d'interruption pour interrupteur haute tension isolé à gaz Active EP1835520B2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE502006009434T DE502006009434D1 (de) 2006-03-14 2006-03-14 Schaltkammer für einen gasisolierten Hochspannungsschalter
AT06405112T ATE508466T1 (de) 2006-03-14 2006-03-14 Schaltkammer für einen gasisolierten hochspannungsschalter
EP06405112.1A EP1835520B2 (fr) 2006-03-14 2006-03-14 Chambre d'interruption pour interrupteur haute tension isolé à gaz

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06405112.1A EP1835520B2 (fr) 2006-03-14 2006-03-14 Chambre d'interruption pour interrupteur haute tension isolé à gaz

Publications (3)

Publication Number Publication Date
EP1835520A1 EP1835520A1 (fr) 2007-09-19
EP1835520B1 true EP1835520B1 (fr) 2011-05-04
EP1835520B2 EP1835520B2 (fr) 2013-12-18

Family

ID=36779792

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06405112.1A Active EP1835520B2 (fr) 2006-03-14 2006-03-14 Chambre d'interruption pour interrupteur haute tension isolé à gaz

Country Status (3)

Country Link
EP (1) EP1835520B2 (fr)
AT (1) ATE508466T1 (fr)
DE (1) DE502006009434D1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE457520T1 (de) 2006-12-06 2010-02-15 Abb Research Ltd Hochspannungsschalter mit einem isoliergasgefüllten metallbehälter
EP2180492B1 (fr) 2008-10-22 2013-12-04 ABB Technology AG Chambre de commutation pour un disjoncteur haute tension et disjoncteur haute tension
FR2946181B1 (fr) 2009-05-26 2011-07-01 Areva T & D Sa Disjoncteur haute tension a echappement de gaz ameliore.
DE102012202408A1 (de) * 2012-02-16 2013-08-22 Siemens Aktiengesellschaft Schaltgeräteanordnung
US9673006B2 (en) 2015-01-23 2017-06-06 Alstom Technology Ltd Exhaust diffuser for a gas-insulated high voltage circuit breaker
CN109036940A (zh) * 2017-06-09 2018-12-18 平高集团威海高压电器有限公司 灭弧室及具有该灭弧室的gis设备

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DE732961C (de) 1939-05-05 1943-03-16 Merlin Gerin Auspufftopf fuer elektrische Druckgasschalter
FR866412A (fr) 1940-04-06 1941-08-12 Merlin Gerin Interrupteur à gaz comprimé pour haute tension
GB571118A (en) 1943-12-16 1945-08-08 English Electric Co Ltd Improvements in electric circuit breakers
US2533545A (en) 1948-12-07 1950-12-12 Allis Chalmers Mfg Co Circuit breaker with lever type current connection
US2636961A (en) 1951-11-09 1953-04-28 Gen Electric Electric circuit breaker
FR1391951A (fr) 1964-01-29 1965-03-12 Merlin Gerin Perfectionnements aux dispositifs d'échappement insonorisé pour disjoncteurs à gaz comprimé
JPS5438572A (en) 1977-09-02 1979-03-23 Hitachi Ltd Buffer type gas circuit breaker
CH655612B (fr) * 1981-09-18 1986-04-30
EP0075668B1 (fr) 1981-09-30 1987-01-07 Sprecher Energie AG Disjoncteur à gaz comprimé
DE9314779U1 (de) 1993-09-24 1993-11-25 Siemens Ag Hochspannungs-Leistungsschalter mit einer Kühleinrichtung zur Kühlung des Löschgases
FR2760890B1 (fr) 1997-03-17 1999-04-16 Gec Alsthom T & D Sa Deflecteur pour appareil electrique sous enveloppe metallique, en particulier pour disjoncteur haute tension
DE19832709C5 (de) 1998-07-14 2006-05-11 Siemens Ag Hochspannungsleistungsschalter mit einer Unterbrechereinheit
DE19928080C5 (de) 1999-06-11 2006-11-16 Siemens Ag Hochspannungsleistungsschalter mit einem Abströmkanal
DE19953560C1 (de) 1999-11-03 2001-06-07 Siemens Ag Druckgas-Leistungsschalter
US6495785B1 (en) 2000-06-29 2002-12-17 Abb Power T&D Company Inc. Non-glue mounting of non-metallic tubes
DE10221580B3 (de) 2002-05-08 2004-01-22 Siemens Ag Unterbrechereinheit eines Hochspannungs-Leistungsschalters
DE10221576B4 (de) 2002-05-08 2006-06-01 Siemens Ag Elektrisches Schaltgerät mit einer Kühleinrichtung
ATE369614T1 (de) 2004-06-07 2007-08-15 Abb Technology Ag Leistungsschalter
EP1691389B1 (fr) 2005-02-10 2011-04-06 ABB Technology AG Chambre de coupure pour disjoncteur haute tension à isolation gazeuse
DE502005009041D1 (de) 2005-09-26 2010-04-01 Abb Technology Ag Hochspannungsschalter mit verbesserter Schaltleistung

Also Published As

Publication number Publication date
EP1835520B2 (fr) 2013-12-18
EP1835520A1 (fr) 2007-09-19
DE502006009434D1 (de) 2011-06-16
ATE508466T1 (de) 2011-05-15

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