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EP0039523B1 - Disjoncteur à haute tension - Google Patents

Disjoncteur à haute tension Download PDF

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Publication number
EP0039523B1
EP0039523B1 EP81200287A EP81200287A EP0039523B1 EP 0039523 B1 EP0039523 B1 EP 0039523B1 EP 81200287 A EP81200287 A EP 81200287A EP 81200287 A EP81200287 A EP 81200287A EP 0039523 B1 EP0039523 B1 EP 0039523B1
Authority
EP
European Patent Office
Prior art keywords
contact
burn
coil
hollow
nozzle
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
EP81200287A
Other languages
German (de)
English (en)
Other versions
EP0039523A1 (fr
Inventor
Rudolf Moll
Klaus Prof.Dr. Ragaller
Ekkehard Dr. Schade
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
Publication of EP0039523A1 publication Critical patent/EP0039523A1/fr
Application granted granted Critical
Publication of EP0039523B1 publication Critical patent/EP0039523B1/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
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • 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 invention relates to a high-voltage circuit breaker according to the preamble of patent claim 1.
  • Such a switch is known from EP-A1-0 004 213.
  • the pressure of the gas in a compression chamber is increased by heating by means of the rotating arc drawn between the contacts and under the action of a radial magnetic field, and the arc is blown through the heated compressed gas.
  • the coil connected to the hollow erosion contact can absorb the full quenching current.
  • An appropriately sized coil increases the cost of the switch considerably.
  • the extinguishing capacity of the switch is not optimal, since the heat generated by the arc is not removed quickly enough from the inside of the arc.
  • the switch according to the invention is distinguished by the fact that the coil, which is connected to the hollow erosion contact, only flows through the - now low - extinguishing current shortly before the zero current.
  • the coil therefore has comparatively small dimensions.
  • the erosion contact is now designed so that a magnetic field running in the axial direction acts on a large part of the switch-off arc. The forces caused by the axial magnetic field pump energy into a disorderly, turbulent gas movement and cause the arc to tear particularly hard in the expansion space and thus a high extinguishing capacity of the switch.
  • the magnetic field of the coil is limited by the nozzle designed as a short-circuit ring to the expansion space of the switch. Due to the measures specified in the characterizing part of claim 3, the axial magnetic field can form in a particularly expedient manner inside the hollow erosion contact.
  • the embodiment of the switch according to the invention is characterized in that the commutation of the switch-off arc from the first to the second part of the erosion contact can always be achieved with certainty using simple means even with very small switch-off currents.
  • the sole FIGURE shows a top view of a section through the contact arrangement of the high-voltage circuit breaker according to the invention.
  • a movable contact 1 and a fixed contact 2 are shown during the opening of a high-voltage circuit breaker.
  • the movable contact 1 has a continuous current contact 11 and an erosion contact 12
  • the fixed contact 2 has a continuous current contact 21 and an erosion contact 22.
  • the fixed erosion contact 22 consists of two parts 221 and 222.
  • the first ring-shaped part 221 is provided with a power connection 223 and is designed as a nozzle.
  • the second part 222 is designed as a hollow pin and can optionally have material recesses extending in the axial direction.
  • the second part 222 of the fixed erosion contact 22 is surrounded by a coil 3 at its end facing the movable contact 1.
  • This coil 3 is connected at one end to the second part 222 and at its other end to the first part 221 of the erosion contact 22.
  • the first part 221 forms the nozzle constriction of the erosion contact 22 and covers the end faces of the coil 3 facing the movable contact 1 and of the second part 222 of the erosion contact.
  • An insulating material nozzle 4 is offset in the axial direction with respect to the fixed erosion contact 22 and, together with the erosion contact 22, delimits a blowing duct 6 through which, as indicated by the arrows, from a compression device 7, which has a compression piston which is non-positively coupled to the movable contact 1 71, compressed gas is blown into the high-pressure zone of the switching path and is discharged through the constrictions of the insulating nozzle 4 and the fixed erosion contact 22 into the expansion space of the switch.
  • the switch according to the invention is characterized in particular by the fact that both the coil 3 and the compression device 7 can be kept very small.
  • the coil 3 need not be dimensioned for the full breaking current; the compression device 7 is only intended to generate such a strong compressed gas flow that the arc 5 commutates from the first part 221 of the erosion contact 22 to its second part 222.
  • a particularly high extinguishing capacity of the switch according to the invention is brought about by limiting the axial magnetic field inside the hollow erosion contact 22.
  • This can be achieved, for example, by designing the first part 221 of the erosion contact 22 as a short-circuit ring.
  • Both short-circuit rings have the additional advantage that they at least partially maintain the axial magnetic field at the time of the zero crossing of the quenching current.

Landscapes

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

Claims (4)

1. Interrupteur de puissance à haute tension pour courants alternatifs comportant un contact pare-étincelles fixe (22) et un contact pare-étincelles mobiles axialement (12), ainsi qu'un ajutage (4) à travers lequel l'arc électrique de coupure
(5) brûle et le gaz comprimé passe d'une chambre de compression dans une chambre de détente, et une bobine cylindrique (3) qui, par sa première extrémité, est reliée à une première partie (221) d'un contact pare-étincelles creux (22) couvrant au moins partiellement une face d'about de la bobine (3) et par son autre extrémité à une seconde partie (222) de ce contact pare-étincelles (22) couvrant au moins partiellement la surface périphérique interne de la bobine (3), caractérisé en ce que la première partie (221) du contact pare-étincelles (22) connectée à la bobine (3) a la forme d'un ajutage et un dispositif de compression (7) actionné par un des contacts pare-étincelles (12, 22) est prévu, ce dispositif produisant un flux de gaz comprimé mesuré d'une manière telle que l'arc électrique de coupure (5) commute de la première partie (221) vers la seconde partie (222) du contact pare-étincelles creux (22) en un court laps de temps comparé à la durée de la demi-onde du courant d'extinction, avant le passage du courant par zéro. 2. Interrupteur de puissance à haute tension suivant la revendication 1, caractérisé en ce que l'ajutage a la forme d'une bague de court-circuit.
3. Interrupteur de puissance à haute tension suivant la revendication 1 ou 2, caractérisé en ce que la seconde partie (222) du contact pare-étincelles creux (22) présente des évidements s'étendant dans le sens axial.
4. Interrupteur de puissance à haute tension suivant l'une quelconque des revendications 1 à 3, caractérisé en ce que le dispositif de compression (7) comporte un piston de compression (71) mobile par rapport au contact pare-étincelles creux (22) et une chambre annulaire, la chambre annulaire étant délimitée par le contact pare-étincelles creux (22) et par une douille en matière isolante (4) dont l'étranglement est décalé axialement par rapport à la première partie (221) du contact pare-étincelles creux 22).
EP81200287A 1980-05-07 1981-03-13 Disjoncteur à haute tension Expired EP0039523B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3545/80 1980-05-07
CH354580 1980-05-07

Publications (2)

Publication Number Publication Date
EP0039523A1 EP0039523A1 (fr) 1981-11-11
EP0039523B1 true EP0039523B1 (fr) 1983-06-08

Family

ID=4258291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81200287A Expired EP0039523B1 (fr) 1980-05-07 1981-03-13 Disjoncteur à haute tension

Country Status (7)

Country Link
US (1) US4414450A (fr)
EP (1) EP0039523B1 (fr)
JP (1) JPS573328A (fr)
DE (1) DE3160402D1 (fr)
FI (1) FI68925C (fr)
PL (1) PL135042B1 (fr)
YU (1) YU39698B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58204429A (ja) * 1982-05-24 1983-11-29 株式会社東芝 ガス絶縁開閉器
CH665054A5 (de) * 1985-01-18 1988-04-15 Sprecher Energie Ag Druckgasschalter.
FR2706073B1 (fr) * 1993-06-03 1995-07-07 Gec Alsthom T & D Sa Disjoncteur à double allongement d'arc pour la coupure des courants à grande composante continue.
US5464956A (en) * 1994-04-08 1995-11-07 S&C Electric Company Rotating arc interrupter for loadbreak switch
JP5242461B2 (ja) * 2009-03-06 2013-07-24 株式会社東芝 ガス遮断器

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50110074A (fr) * 1974-02-12 1975-08-29
FR2373141A1 (fr) * 1976-12-06 1978-06-30 Cem Comp Electro Mec Appareil electrique de coupure a haute tension, notamment un disjoncteur a autosoufflage de l'arc de coupure par un gaz
DE2658235A1 (de) * 1976-12-22 1978-07-06 Siemens Ag Verfahren und vorrichtung zur loeschung eines lichtbogens in einem gasstroemungsschalter
CH612293A5 (fr) * 1977-04-29 1979-07-13 Bbc Brown Boveri & Cie
FR2418963A1 (fr) * 1978-03-01 1979-09-28 Merlin Gerin Dispositif d'extinction d'arc a autosoufflage et a arc tournant
DE2809509A1 (de) * 1978-03-06 1979-09-13 Licentia Gmbh Druckgas-leistungsschalter
DE2820021C2 (de) * 1978-05-08 1987-04-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Hochspannungs-Leistungsschalter mit rotierendem Lichtbogen
FR2441261A1 (fr) * 1978-11-10 1980-06-06 Merlin Gerin Interrupteur a arc tournant
DE2904109A1 (de) * 1979-02-03 1980-08-07 Licentia Gmbh Druckgas-hochspannungsleistungsschalter

Also Published As

Publication number Publication date
PL135042B1 (en) 1985-09-30
YU39698B (en) 1985-03-20
FI68925C (fi) 1985-11-11
FI811379L (fi) 1981-11-08
EP0039523A1 (fr) 1981-11-11
FI68925B (fi) 1985-07-31
YU71981A (en) 1983-06-30
PL230990A1 (fr) 1982-01-04
JPS573328A (en) 1982-01-08
US4414450A (en) 1983-11-08
DE3160402D1 (en) 1983-07-14

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