EP0042456B1 - Disjoncteur haute tension - Google Patents

Disjoncteur haute tension Download PDF

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Publication number
EP0042456B1
EP0042456B1 EP80200596A EP80200596A EP0042456B1 EP 0042456 B1 EP0042456 B1 EP 0042456B1 EP 80200596 A EP80200596 A EP 80200596A EP 80200596 A EP80200596 A EP 80200596A EP 0042456 B1 EP0042456 B1 EP 0042456B1
Authority
EP
European Patent Office
Prior art keywords
contact
space
fixed contact
circuit breaker
arc
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.)
Expired
Application number
EP80200596A
Other languages
German (de)
English (en)
Other versions
EP0042456A1 (fr
Inventor
Modesto-Manuel Cancio
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.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
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 BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Priority to EP80200596A priority Critical patent/EP0042456B1/fr
Priority to DE8080200596T priority patent/DE3070004D1/de
Priority to YU1085/81A priority patent/YU39700B/xx
Priority to US06/275,348 priority patent/US4427859A/en
Priority to CS814639A priority patent/CS229671B2/cs
Publication of EP0042456A1 publication Critical patent/EP0042456A1/fr
Application granted granted Critical
Publication of EP0042456B1 publication Critical patent/EP0042456B1/fr
Expired 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
    • H01H33/98—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
    • H01H33/982—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 in which the pressure-generating arc is rotated by a magnetic field

Definitions

  • the invention relates to a high-voltage circuit breaker with a fixed and an axially displaceable contact with at least one nozzle, through which pressurized gas flows from an extinguishing space into an expansion space when switched off, and with a coil surrounding the fixed contact, one end of which contacts the fixed one Contact and the other end of which is connected to an axially offset ring contact with respect to the fixed contact, at least one radially outward outflow channel being provided between the fixed contact and the ring contact, which connects a commutation space delimited by the fixed contact and the ring contact to a relief space.
  • Such a switch is known for example from DE-AI-2 741 022.
  • This switch an arc burning between the fixed and the moving contact is drawn when switching off.
  • This arc heats up the pressurized gas in the commutation chamber, which supports the commutation of the base point of the arc at the fixed contact on the ring contact by forming a compressed gas flow directed from the commutation chamber to the relief chamber if the movable contact is at a sufficient distance from the fixed contact.
  • the magnetic field of the coil through which the breaking current now flows causes the arc to rotate.
  • the rotation of the arc has the advantage that the formation of metal vapors and contact erosion is largely avoided, which ensures a high dielectric strength in the switching path.
  • the metal vapors and the contact erosion reduce the electrical strength of the switching path, since the relatively small relief space can only absorb a fraction of the quenching gas heated in the commutation space.
  • the metal vapors remaining in the commutation chamber and the contact erosion not only reduce the dielectric strength, but also make the commutation of the arc base point from the fixed contact to the ring contact more difficult.
  • the switch according to the invention is characterized in that the metal vapor and contact erosion particles located during a switching process between the fixed and the movable contact are reliably removed from the switching path even in the case of comparatively large currents to be switched off and reach a relief chamber which is closed and cooled with respect to the switching path, on the specially designed walls they can be deposited as solid bodies.
  • the dielectric properties of the compressed gas used for arc quenching are considerably improved.
  • safe commutation of the switching arc from the fixed contact to the ring contact can also be achieved when switching comparatively large currents, since a pressure gas flow running radially outward from the fixed contact to the ring contact occurs during the entire switching phase.
  • a housing filled with insulating compressed gas, such as SF 6 , and sealed at the end with a power connection 20.
  • insulating compressed gas such as SF 6
  • Inside the housing 10 there is a fixed contact 21 and a movable contact 31.
  • the fixed contact 21 is hollow and has a permanent current contact 22 and an erosion contact 23 designed as a finger.
  • an insulating pin 24 is provided, through which the fixed the gas volume trapped in contact 21 is reduced.
  • a coil 40 which surrounds the fixed contact 21 in a cylindrical manner, is connected at one end to the fixed contact 21 and at its other end via a web 51 to an annular contact 50 which is axially offset with respect to the fixed contact 21.
  • a commutation space 71 delimited by the fixed contact 21, the insulating material pin 24, the ring contact 50 and the nozzle-shaped erosion contact 32 is connected via an outflow channel 85 designed as an annular gap to a relief space 80 enclosed by walls 84, which has two chambers connected to one another via a check valve 82 81.83.
  • the heated quenching gas can only escape through the outflow channel 85 designed as an annular gap.
  • the extinguishing gas removes combustion residues and metal vapors, which are caused by the arc 90 burning between the combustion contacts 23 and 32.
  • the walls 84 of the relief chamber 80 preferably contain a porous, sintered or provided with cooling fins, which results in good cooling of the extinguishing gas and the combustion residues and the metal vapors are absorbed in a particularly effective manner.
  • the first chamber 81 of the relief chamber 80 can no longer accommodate the heated extinguishing gas. It is therefore advisable to connect the first chamber 81 to the second chamber 83 via the check valve 82, as a result of which excess quenching gas can be discharged when the check valve 82 responds above a predetermined pressure value.
  • the arc 90 begins to rotate very quickly under the influence of the magnetic field of the coil 40 (cf. FIG. 2a).
  • the extinguishing gas is heated to an even greater extent, but due to the rotation of the arc, the formation of combustion residues and metal vapors is largely avoided.
  • the heated extinguishing gas is discharged through the discharge channel 85 and thereby removes any burn-up and metal residues that are still present.
  • the quenching gas is released by the rotating arc 92 in the quenching chamber 70 heated to the extinguishing pressure and removed via the nozzle opening of the erosion contact 32 into the expansion space 60.
  • the arc 92 is blown intensively, driven into the nozzle opening of the erosion contact 32 of the movable contact 31 and extinguished.
  • the movement of the movable contact 31 comes to a standstill after the arc 92 has extinguished in the position AS shown in FIG. 1, left half, (switch-off position).
  • the insulating material pin 24 closing the nozzle-shaped opening of the erosion contact 32 of the movable contact 31 in the initial phase of the switching-off process can be designed as a follower pin.
  • the isolating pin standing in the switched-on position under the action of an energy accumulator, such as a spring 24 continues to move the movable contact 31 until the arc is commutated onto the ring contact 50 (dashed position in FIG. 2b).
  • the insulating material pin 24 can be provided with a bore (also shown in dashed lines in FIG. 2b), so that after commutation of the arc on the ring contact 50 and after this bore has been released by the movable contact 31, the arc 92 is double-blown.

Landscapes

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

Claims (4)

1. Disjoncteur de puissance haute tension comportant un contact fixe (21) et un contact (31) mobile suivant un axe, présentant au moins un ajutage par lequel, lors du déclenchement, du gaz comprimé passe d'une chambre d'extinction (70) dans une chambre de détente (60), ainsi qu'une bobine (40) entourant le contact fixe (21) de manière cylindrique, la première extrémité de cette bobine étant reliée au contact fixe (21) et son autre extrémité étant reliée à un contact annulaire (50) décalé axialement par rapport au contact fixe 21, étant entendu qu'entre le contact fixe (21) et le contact annulaire (50) est prévu au moins un canal d'évacuation (85) s'étendant vers l'extérieur qui raccorde une chambre de commutation (71) délimitée par le contact fixe (21) et le contact annulaire (50) à une chambre de dè- charge, caractérisé en ce que la chambre de décharge (80) est entourée de parois (84) en matière poreuse, fritée ou pourvue de lamelles de refoidissement et présente un volume de dimensions telles qu'avant la commutation d'un arc de disjonction (90) du contact fixe (21) au contact annulaire (50), il puisse recevoir la fraction du gaz comprimé sortant de la chambre de commutation (71).
2. Disjoncteur de puissance haute tension suivant la revendication 1, caractérisé en ce que la chambre de décharge (80) comporte au moins deux loges (81, 83) communiquant l'une avec l'autre par l'intermédiaire d'un clapet de retenue (82).
3. Disjoncteur de puissance haute tension suivant la revendication 1 ou 2 comportant un tampon en matière isolante (24) prévu dans la chambre de commutation (71) et obturant l'ajutage du contact mobile (31) avant la commutation de l'arc de disjonction (90), caractérisé en ce que le tampon en matière isolante (24) est conçu pour se déplacer axialement et s'appuie sur le contact mobile (31) à l'intervention d'un accumulateur d'énergie chargé, dans la position d'enchlenche- ment du disjoncteur.
4. Disjoncteur de puissance haute tension suivant la revendication 3, caractérisé en ce que le tampon isolant (24) a la forme d'un ajutage.
EP80200596A 1980-06-23 1980-06-23 Disjoncteur haute tension Expired EP0042456B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP80200596A EP0042456B1 (fr) 1980-06-23 1980-06-23 Disjoncteur haute tension
DE8080200596T DE3070004D1 (en) 1980-06-23 1980-06-23 High voltage power circuit breaker
YU1085/81A YU39700B (en) 1980-06-23 1981-04-27 Electric high voltage switch
US06/275,348 US4427859A (en) 1980-06-23 1981-06-18 High voltage power switch
CS814639A CS229671B2 (en) 1980-06-23 1981-06-19 High voltage power circuit braker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80200596A EP0042456B1 (fr) 1980-06-23 1980-06-23 Disjoncteur haute tension

Publications (2)

Publication Number Publication Date
EP0042456A1 EP0042456A1 (fr) 1981-12-30
EP0042456B1 true EP0042456B1 (fr) 1985-01-23

Family

ID=8187012

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80200596A Expired EP0042456B1 (fr) 1980-06-23 1980-06-23 Disjoncteur haute tension

Country Status (5)

Country Link
US (1) US4427859A (fr)
EP (1) EP0042456B1 (fr)
CS (1) CS229671B2 (fr)
DE (1) DE3070004D1 (fr)
YU (1) YU39700B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59144726U (ja) * 1983-03-15 1984-09-27 日新電機株式会社 ガスしや断器
CH662443A5 (de) * 1983-10-28 1987-09-30 Bbc Brown Boveri & Cie Druckgasschalter.
DE3437707A1 (de) * 1984-09-20 1986-03-27 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter
FR2596578B1 (fr) * 1986-03-28 1994-05-06 Merlin Et Gerin Disjoncteur electrique a autoexpansion et a arc tournant
FR2644624B1 (fr) * 1989-03-17 1996-03-22 Merlin Gerin Disjoncteur electrique a autoexpansion et a gaz isolant
DE19507583A1 (de) * 1995-03-04 1996-09-05 Abb Management Ag Leistungsschalter
WO2017032667A1 (fr) * 2015-08-21 2017-03-02 Abb Schweiz Ag Dispositif de commutation électrique et procédé de refroidissement d'un milieu de commutation dans un dispositif de commutation électrique
WO2018036904A1 (fr) * 2016-08-26 2018-03-01 Abb Schweiz Ag Interrupteur et procédé de séparation des contacts d'un interrupteur

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH571763A5 (en) * 1974-07-24 1976-01-15 Sprecher & Schuh Ag Temperature-compensated piston-operated pressure gas switch - uses heat sink for switching cylinders to equalize temperature conditions
DE2741022A1 (de) * 1976-10-20 1978-05-03 Bbc Brown Boveri & Cie Gasschalter mit eigenloeschung
US4144426A (en) * 1977-02-15 1979-03-13 Westinghouse Electric Corp. Single barrel puffer circuit interrupter with downstream gas coolers
CH612293A5 (fr) * 1977-04-29 1979-07-13 Bbc Brown Boveri & Cie
CH618287A5 (en) * 1977-07-26 1980-07-15 Sprecher & Schuh Ag Gas-blast circuit breaker
DE2759268C3 (de) * 1977-12-30 1984-08-02 Siemens AG, 1000 Berlin und 8000 München Druckgasschalter
FR2418963A1 (fr) * 1978-03-01 1979-09-28 Merlin Gerin Dispositif d'extinction d'arc a autosoufflage et a arc tournant

Also Published As

Publication number Publication date
YU39700B (en) 1985-03-20
US4427859A (en) 1984-01-24
YU108581A (en) 1983-06-30
EP0042456A1 (fr) 1981-12-30
CS229671B2 (en) 1984-06-18
DE3070004D1 (en) 1985-03-07

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