EP1218906B1 - Disjoncteur haute tension - Google Patents

Disjoncteur haute tension Download PDF

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Publication number
EP1218906B1
EP1218906B1 EP00982936A EP00982936A EP1218906B1 EP 1218906 B1 EP1218906 B1 EP 1218906B1 EP 00982936 A EP00982936 A EP 00982936A EP 00982936 A EP00982936 A EP 00982936A EP 1218906 B1 EP1218906 B1 EP 1218906B1
Authority
EP
European Patent Office
Prior art keywords
arcing contact
region
circuit breaker
nozzle arrangement
voltage circuit
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.)
Revoked
Application number
EP00982936A
Other languages
German (de)
English (en)
Other versions
EP1218906A1 (fr
Inventor
Heiner Marin
Volker Lehmann
Ralf Bergmann
Hold Dienemann
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
Original Assignee
Siemens 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
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Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1218906A1 publication Critical patent/EP1218906A1/fr
Application granted granted Critical
Publication of EP1218906B1 publication Critical patent/EP1218906B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • H01H33/7015—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
    • H01H33/98—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow

Definitions

  • the invention relates to a high-voltage circuit breaker with a first arcing contact and one second arcing contact piece, which face each other, at least of which the first arcing contact piece can be driven is, as well as with one that can be driven with the first Arcing contact piece connected insulating nozzle assembly, the has an axial outflow channel for guiding an extinguishing gas and with a boiler room in which by an arc heated between the two arcing contact pieces Extinguishing gas can be stored and that with the outflow channel Insulating nozzle arrangement is connected by means of an annular channel, with the outflow channel through the second when switched on Arcing contact piece is blocked, the outflow channel the insulating nozzle assembly a first, the free end of essentially facing first arcing contact piece cylindrical region and one adjacent to it, in its Diameter expanded from the first area to the second Area.
  • Such a high-voltage circuit breaker is, for example known from WO 99/44213.
  • a high-voltage circuit breaker is, for example known from WO 99/44213.
  • an arc in that of the isolation nozzle assembly drawn around the arc room and through the arc the extinguishing gas there, SF6, is heated.
  • the heated and thereby expanded extinguishing gas is through a heating duct is diverted to a boiler room, where there is a subsequent blowing of the arc is available.
  • the aim should be that the essential part of that for blowing the arc necessary energy through the arc itself, d. H. by the arc generated quenching gas pressure is provided.
  • a large arc room has so far been used for blowing of the arc considered favorable.
  • the arcing contact piece has a large diameter, around peaks and edges with a large radius of curvature to be able to perform, so that dielectric problems could be avoided at this point.
  • the present invention is therefore based on the object in a high-voltage circuit breaker of the type mentioned Type the switching power especially at high currents to improve, such as in a terminal short circuit occur.
  • the object is achieved in that the distance between the first arcing contact and the second area minus the width that the ring channel is at its confluence with the outflow channel of the insulating nozzle arrangement has, is greater than twice the diameter of the outflow channel in its first area, the Diameter of the outflow channel is smaller in the first area than 30 mm, in particular less than 25 mm.
  • An advantageous embodiment of the invention provides that the second arcing contact piece has a field electrode for shielding of the electrical field is associated with a different from the speed of the insulating nozzle arrangement Speed is drivable.
  • the second arcing contact piece becomes through this field electrode additionally dielectrically shielded and in particular is that the field electrode at a different speed than the insulating nozzle arrangement can be driven, optimum dielectric at all times during the switching process Configuration allows.
  • the field electrode can either by means of its own drive, for example by means of an electrodynamic drive, or by means of a Gear can be moved by the switch drive.
  • second arcing contact piece designed as a cylindrical pin is that at its the first arcing contact facing end is rounded.
  • the second Arcing contact piece designed as a cylindrical pin is the one facing the first arcing contact piece End a first section with the others Sections of reduced diameter.
  • the first step is through the outflow channel the second arcing contact piece is fully released Edge region of the outflow opening around the first section of the Arcing contact piece with reduced diameter around released so that the gas flow in this first section can form first before the outflow channel is released entirely.
  • a further advantageous embodiment of the invention provides before that the second arcing contact piece by means of a the insulating nozzle arrangement coupled transmission element and a gear connected to it is.
  • the second arcing contact piece is by means of of the switch drive via the transmission element and a Gearbox drivable, and the speed profile of the second Arcing contact piece is about the design of the gearbox also determinable.
  • a field electrode assigned to the second arcing contact piece advantageous for shielding the electrical field be provided that additionally by means of the gear Field electrode is drivable.
  • the gearbox can be designed so that the field electrode together with the second arcing contact or can be driven with a different movement profile than this.
  • the invention can also be advantageously configured in this way that the insulating nozzle assembly is made of PTFE.
  • the insulating nozzle arrangement made of PTFE (polytetrafluoroethylene) exists due to the influence of the arc on the inner surface of the insulating nozzle assembly PTFE evaporates that to extinguish the arc or dielectric Re-consolidation of the switching path is suitable which makes it easier to extinguish the arc and the Flashback is difficult.
  • PTFE polytetrafluoroethylene
  • the insulating nozzle arrangement from a main nozzle and one the first arcing contact piece immediately surrounding auxiliary nozzle, wherein the ring channel between the main nozzle and the auxiliary nozzle is formed.
  • the invention also relates to a high voltage circuit breaker with a first arcing contact piece and a second arcing contact piece, which face each other, wherein at least the first arcing contact piece can be driven is, as well as with a drivable first Arcing contact piece connected insulating nozzle assembly, the has an axial outflow channel for guiding an extinguishing gas and with a boiler room in which by an arc Extinguishing gas heated between the arcing contact pieces is storable and that with the outflow channel of the insulating nozzle arrangement is connected by means of at least one channel, wherein the outflow channel of the insulating nozzle arrangement has a first has a substantially cylindrical region to which at its end facing away from the first arcing contact piece one with respect to the diameter compared to the first area expanded second area connects, the first area in the on state by the second arcing contact is insulated, the length of the first area is greater than is twice the diameter of the first area and the Diameter of the first area less than 30
  • Such an embodiment of the invention can for example provide that the duct that connects the boiler room and the outflow duct the insulating nozzle assembly connects in the form of several, on the outer surface of the outflow opening on the Circumferentially distributed sub-channels is formed.
  • the length of the first cylindrical region the outflow opening of the insulating nozzle arrangement is equal to the distance between the first arcing contact and the first Area of the outflow opening, since in this case not the Subtract the width of an annular channel opening into the outflow channel is.
  • the shows 1 shows the interrupter unit of a high-voltage circuit breaker, partly schematically in section, with a second arcing contact piece tapered in its front area
  • Figure 2 shows an arrangement with a non-tapered second arcing contact piece which is drivable and with a drivable field electrode
  • 3 shows the arrangement from FIG. 1 with an outflow channel which is connected to the boiler room by means of a plurality of channels distributed over its circumference.
  • FIG. 1 are each other in an insulating circuit breaker housing 18, for example made of porcelain or a composite material, two arcing contact pieces 1, 2 coaxially opposite.
  • the first arcing contact 1 is by means of a switch drive, not shown drivable, for example as a hydraulic drive or can be designed as a spring-loaded drive, or as electrodynamic drive, while the second arcing contact 2, which has the shape of a contact pin, fixed is trained.
  • the insulating nozzle arrangement 3 has an outflow channel 6 which, when in the on state the two arcing contact pieces 1, 2 are engaged with one another stand, penetrated by the second arcing contact 2 and is damned.
  • the insulating nozzle arrangement essentially a first one in the area of the main nozzle 3a cylindrical region 6a, which extends from the end face of the first arcing contact 1 through the first nozzle 3b through to the beginning of a second, in diameter extends over the first area 6a expanded area 6b.
  • the outflow channel has an insignificant larger diameter than the second arcing contact 2 in its second section.
  • the second Arcing contact piece can have a first section at its end 7 with reduced compared to the second section 8 Have diameter.
  • This first section 7 of the second arcing contact 2 serves on the one hand to discharge the discharge channel 6 at the end of the switch-off movement, after which the complete dam the second section 8 is still abandoned dam and thus an extinguishing gas flow through the outflow channel 6 to get started in several steps, on the other hand in addition, a structurally favorable construction to create at the end of the second arcing contact piece 2 which faces the first arcing contact 1.
  • a first continuous current contact piece 12 and a second Continuous current contact piece 13 arranged in the on state are also in contact with each other and the nominal current wear.
  • a boiler room 16 is formed, which is via an annular channel 15 with the outlet channel 6 of the nozzle or between the Arc contact pieces 1, 2 formed arc space connected is.
  • an arc 4 between the arcing contact pieces 1, 2 arise, which in Arcing contact space 5 extinguishing gas, for example SF6, heats up and thus expands.
  • the extinguishing gas can then flow through the annular duct 15 into the boiler room 16 and is temporarily stored there until because of a Zero current crossing of the current to be switched by the arcs 4 goes out and the extinguishing gas from the boiler room 16 through the Ring channel 15 flows back into the arc chamber 5 to there bring about rapid cooling and thus reignition to prevent an arc 4.
  • the length of the first region 6a of the outflow channel 6, measured from the end face of the first arcing contact piece 1 to the beginning of the expanded area 6b of the outflow channel 6 of the insulating nozzle arrangement 3 corresponds to at least twice of the diameter of the first region 6a of the outflow opening 6th
  • the outflow opening 6 is sufficient on the one hand long through the second section 8 of the second arcing contact 2 insulated to a sufficient heating of Extinguishing gas through the arc 4 before opening the outflow opening 6 and thus sufficient storage of extinguishing gas to allow in the boiler room 16.
  • a second phase of the switch-off movement begins with the separation of the second section 8 of the second arcing contact 2 from the first region 6a of the outflow channel 6.
  • the first section 7 is still at this time with a reduced diameter of the second arcing contact 2 in the first area 6a of the outflow channel 6, so that the outflow opening is only partially blocked and one Extinguishing gas flow through the discharge channel 6 started becomes.
  • the diameter of the first section 6a of the outflow channel 6 smaller than 30 mm is a special one strong pressure increase in the arc space or in the outflow channel 6 reached, which has a positive effect on the switching capacity high currents.
  • FIG. 1 Another embodiment of the invention is shown in FIG shown, the main aim being that the second arcing contact 2a does not have multiple sections with different diameters, but only on the one facing the first arcing contact 1 End is rounded and that the second arcing contact piece 2a separately driven by a gear 22 is, the transmission 22 by means of a transmission element 21 in the form of an attached to the insulating nozzle assembly 3 Rod is drivable.
  • a field electrode 20 is provided, which is the second Arc contact piece 2a surrounds and dielectrically shielded and which can also be driven by means of the gear 22.
  • the gear 22 has various levers 23, 24 for this purpose, that for the electrode 20 and the second arcing contact 2a allow different movement profiles. Because of the more detailed description of the transmission 22 is based on the German utility model 299 01 205.0 referenced.
  • FIG. 3 shows an embodiment which is shown in FIG essentially corresponds to that shown in Figure 1, wherein however, the second arcing contact piece 2a without a first one, section 7 reduced in diameter, but only is formed with a rounded end.
  • the channels or an annular channel between the insulating nozzle arrangement and the first arcing contact piece can also be advantageously provided that the channels or an annular channel between the insulating nozzle arrangement and the first arcing contact piece.

Landscapes

  • Circuit Breakers (AREA)

Claims (9)

  1. Disjoncteur haute tension comprenant une première pièce de contact d'arc (1) et une deuxième pièce de contact d'arc (2, 2a) qui se font face et parmi lesquelles au moins la première pièce de contact d'arc (1) peut être entraínée, ainsi qu'avec un agencement de buses isolantes (3) - relié à la première pièce de contact d'arc (1) qui peut être entraínée - qui présente un canal d'évacuation (6) axial destiné au passage d'un gaz d'extinction et une chambre de chauffage (16) dans laquelle du gaz d'extinction, chauffé par un arc électrique (4) entre les deux pièces de contact d'arc (1, 2), peut être stocké et qui communique avec le canal d'évacuation (6) de l'agencement de buses isolantes (3) par un canal annulaire (15),
    en état d'enclenchement le canal d'évacuation (6) étant barré par la deuxième pièce de contact d'arc (2, 2a),
    le canal d'évacuation (6) de l'agencement de buses isolantes (3) présentant une première zone (6a) sensiblement cylindrique tournée vers l'extrémité libre de la première pièce de contact d'arc (1) et, voisine de cette zone, une deuxième zone (6b) agrandie pour ce qui est de son diamètre par rapport à la première zone,
    caractérisé en ce que,
    déduction faite de la largeur que présente le canal annulaire (15) à son embouchure dans le canal d'évacuation (6) de l'agencement de buses isolantes (3), la distance entre la première pièce de contact d'arc (1) et la deuxième zone est supérieure au double du diamètre du canal d'évacuation (6) dans sa première zone (6a),
    le diamètre du canal d'évacuation (6) dans la première zone (6a) étant inférieur à 30 mm, en particulier inférieur à 25 mm.
  2. Disjoncteur haute tension selon la revendication 1 caractérisé en ce qu'une électrode de champ (20) qui sert à blinder le champ électrique et qui peut être entraínée avec une vitesse différente de la vitesse de l'agencement de buses isolantes (3) est associée à la deuxième pièce de contact d'arc (2, 2a).
  3. Disjoncteur haute tension selon la revendication 1 ou 2 caractérisé en ce que la deuxième pièce de contact d'arc (2a) est formée en tant que broche cylindrique qui est arrondie à son extrémité tournée vers la première pièce de contact d'arc.
  4. Disjoncteur haute tension selon la revendication 1 ou 2 caractérisé en ce que la deuxième pièce de contact d'arc (2) est formée en tant que broche cylindrique qui présente à son extrémité tournée vers la première pièce de contact d'arc un premier segment (7) d'un diamètre inférieur aux autres segments (8).
  5. Disjoncteur haute tension selon l'une des revendications précédentes caractérisé en ce que la deuxième pièce de contact d'arc (2, 2a) peut être entraínée par un élément de transmission couplé à l'agencement de buses isolantes (3) et par un mécanisme (22) de transmission relié à celui-ci.
  6. Disjoncteur haute tension selon la revendication 5 ayant une deuxième électrode de champ (20) associée à la deuxième pièce de contact d'arc et destinée à blinder le champ électrique, caractérisé en ce que l'électrode de champ (20) peut en outre être entraínée par le mécanisme (22) de transmission.
  7. Disjoncteur haute tension selon l'une des revendications précédentes caractérisé en ce que l'agencement de buses isolantes (3) est en PTFE.
  8. Disjoncteur haute tension selon l'une des revendications précédentes caractérisé en ce que l'agencement de buses isolantes (3) consiste en une buse principale (3a) et en une buse auxiliaire (3b) qui entoure immédiatement la première pièce de contact d'arc (1), le canal annulaire (15) étant formé entre la buse principale (3a) et la buse auxiliaire (3b).
  9. Disjoncteur haute tension ayant une première pièce de contact d'arc (1) et une deuxième pièce de contact d'arc (2, 2a) qui se font face,
    la première pièce de contact d'arc (1) au moins pouvant être entraínée,
    ainsi qu'un agencement de buses isolantes (3) - relié à la première pièce de contact d'arc (1) qui peut être entraínée - qui présente un canal d'évacuation (6) axial destiné au passage d'un gaz d'extinction et une chambre de chauffage (16) dans laquelle du gaz d'extinction, chauffé par un arc électrique (4) entre les deux pièces de contact d'arc (1, 2), peut être stocké et qui communique avec le canal d'évacuation (6) de l'agencement de buses isolantes (3) par au moins un canal (19),
    le canal d'évacuation (6) de l'agencement de buses isolantes (3) présentant une première zone pratiquement cylindrique (6a) à laquelle, à son extrémité opposée à la première pièce de contact d'arc (1), se raccorde une deuxième zone (6b) agrandie pour ce qui est de son diamètre par rapport à la première zone,
    en état d'enclenchement, la première zone (6a) étant barrée par la deuxième pièce de contact d'arc (2, 2a), la longueur de la première zone (6a) étant supérieure au double du diamètre de la première zone (6a) et le diamètre de la première zone (6a) étant inférieur à 30 mm, en particulier inférieur à 25 mm.
EP00982936A 1999-09-30 2000-09-26 Disjoncteur haute tension Revoked EP1218906B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19948687A DE19948687C1 (de) 1999-09-30 1999-09-30 Hochspannungsleistungsschalter
DE19948687 1999-09-30
PCT/DE2000/003431 WO2001024211A1 (fr) 1999-09-30 2000-09-26 Disjoncteur haute tension

Publications (2)

Publication Number Publication Date
EP1218906A1 EP1218906A1 (fr) 2002-07-03
EP1218906B1 true EP1218906B1 (fr) 2003-04-23

Family

ID=7925066

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00982936A Revoked EP1218906B1 (fr) 1999-09-30 2000-09-26 Disjoncteur haute tension

Country Status (4)

Country Link
EP (1) EP1218906B1 (fr)
AU (1) AU1991701A (fr)
DE (2) DE19948687C1 (fr)
WO (1) WO2001024211A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018158440A1 (fr) 2017-03-02 2018-09-07 Abb Schweiz Ag Disjoncteur haute tension à robustesse améliorée

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29609909U1 (de) * 1996-05-24 1996-08-22 Siemens Ag Hochspannungs-Leistungsschalter mit einer Isolierstoffdüse
DE19809088C1 (de) * 1998-02-25 1999-09-30 Siemens Ag Hochspannungsleistungsschalter mit einer Isolierstoffdüse
DE29901205U1 (de) * 1999-01-15 1999-05-12 Siemens Ag Hochspannungsleistungsschalter, insbesondere Druckgasleistungsschalter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018158440A1 (fr) 2017-03-02 2018-09-07 Abb Schweiz Ag Disjoncteur haute tension à robustesse améliorée
CN110402475A (zh) * 2017-03-02 2019-11-01 Abb瑞士股份有限公司 具有改进鲁棒性的高压电路断路器
CN110402475B (zh) * 2017-03-02 2021-10-15 Abb电网瑞士股份公司 具有改进鲁棒性的高压电路断路器

Also Published As

Publication number Publication date
AU1991701A (en) 2001-04-30
DE19948687C1 (de) 2001-02-15
WO2001024211A1 (fr) 2001-04-05
DE50001913D1 (de) 2003-05-28
EP1218906A1 (fr) 2002-07-03

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