EP0532394A1 - Dispositif de coupure sans passage naturel par zéro du courant - Google Patents

Dispositif de coupure sans passage naturel par zéro du courant Download PDF

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Publication number
EP0532394A1
EP0532394A1 EP92402424A EP92402424A EP0532394A1 EP 0532394 A1 EP0532394 A1 EP 0532394A1 EP 92402424 A EP92402424 A EP 92402424A EP 92402424 A EP92402424 A EP 92402424A EP 0532394 A1 EP0532394 A1 EP 0532394A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
arc
current
arcing
breaking capacity
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.)
Withdrawn
Application number
EP92402424A
Other languages
German (de)
English (en)
French (fr)
Inventor
Denis Dufournet
Michel Perret
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.)
Alstom Holdings SA
Original Assignee
GEC Alsthom SA
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 GEC Alsthom SA filed Critical GEC Alsthom SA
Publication of EP0532394A1 publication Critical patent/EP0532394A1/fr
Withdrawn legal-status Critical Current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
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches
    • 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
    • H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
    • H01H33/143—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc of different construction or type
    • 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
    • H01H33/006—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means adapted for interrupting fault currents with delayed zero crossings
    • 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
    • H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
    • 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 present invention relates to an electrical cut-off device without natural zero current crossing.
  • FIG. 1 is a diagram of the current after the appearance of a fault; it designating the minimum value taken by the current after a few oscillations around the aperiodic component ip.
  • the circuit breaker In the event that the value of the current exceeds 15 to 20 A, the circuit breaker cannot, without an additional device such as an oscillating circuit, cause the current to go through zero.
  • An object of the invention is to provide a breaking device making it possible to obtain a zero crossing of the current in all circumstances, thus allowing conventional circuit breakers at SF6 to extinguish the arc.
  • the principle of the invention is based on the fact that to achieve the desired goal, it is necessary to increase the arc voltage so as to decrease the aperiodic component of the fault current.
  • the subject of the invention is a breaking device without natural zero crossing of the current, characterized in that it comprises the series association of a circuit breaker with good breaking capacity and a circuit breaker with low breaking capacity but having means for lengthening the arc and increasing the arc tension.
  • the circuit breaker with low breaking capacity comprises an enclosure filled with gases with good dielectric properties such as sulfur hexafluoride SF6, first and second arcing contacts, the second arcing contact being displaceable by means of an operating mechanism, and a blowing nozzle traversed by said second arcing contact, and means for making the first arcing contact execute, from the instant of separation of the contacts of arc, a displacement in a direction opposite to that of the second arcing contact.
  • gases with good dielectric properties such as sulfur hexafluoride SF6
  • first and second arcing contacts being displaceable by means of an operating mechanism, and a blowing nozzle traversed by said second arcing contact, and means for making the first arcing contact execute, from the instant of separation of the contacts of arc, a displacement in a direction opposite to that of the second arcing contact.
  • the displacement can be obtained by securing the first contact to a piston moving in a cylinder, the piston being displaced by the increase in pressure which occurs in the cutting chamber upstream of the blowing nozzle under the effect of the heating created by the arc.
  • FIG. 2 shows that the breaking device according to the invention comprises the association in series of two circuit breakers, one referenced 100, having good breaking capacity, the other referenced 200, having only weak power but having means for increasing the resistance of the arc.
  • the circuit breakers are operated simultaneously or with a slight delay of the circuit breaker 100 relative to the circuit breaker 200.
  • the circuit breaker 100 is of known type and may for example be the circuit breaker described in French patent n ° 89 00 009 filed on January 2, 1989 in the name of the applicant.
  • Such a sulfur hexafluoride circuit breaker with self-blowing and low operating energy has an excellent breaking capacity at zero current crossing.
  • an auto-pneumatic or oil-filled volume circuit breaker can be used.
  • the circuit breaker 200 has a low breaking capacity, but it is provided with a means for increasing the arc voltage; in an exemplary embodiment described in FIG. 3, the means for increasing the arc voltage is a means for lengthening said arc.
  • the circuit breaker of FIG. 3 comprises an insulating envelope 1, for example made of porcelain, tight, filled with gases with good dielectric properties such as sulfur hexafluoride SF6, under a pressure of a few bars.
  • a metal cylinder 2 defining a blowing volume V1 and serving as a fixed permanent contact; this cylinder is fixed to a metal plate 3 closing one side of the envelope and connected to a first socket 4.
  • the cylinder 2 carries a blowing nozzle 5 made of insulating material.
  • a metal tube 6 Inside the cylinder 2 is arranged a metal tube 6 in which slides a piston 7 which carries a metal rod 8, the end of which is made of an alloy resistant to the effects of the arc. This rod serves as an arcing contact.
  • the piston is pushed by a spring 8 pressing against the plate 3.
  • a braid 9 electrically connects the plate 3 and the rod 8.
  • the movable assembly connected to an operating mechanism not shown, comprises a movable permanent contact 12 cooperating with the cylinder 2, and an arcing contact consisting of a rod 14 terminated by a tip 14A made of material resistant to the effects of the 'bow.
  • Contacts 12 and 14 are electrically connected to a second socket not shown.
  • the invention mainly applies to breaking of currents in networks with reactive energy compensation by series capacitors.

Landscapes

  • Circuit Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP92402424A 1991-09-11 1992-09-04 Dispositif de coupure sans passage naturel par zéro du courant Withdrawn EP0532394A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9111220A FR2681185B1 (fr) 1991-09-11 1991-09-11 Dispositif de coupure sans passage naturel par zero du courant.
FR9111220 1991-09-11

Publications (1)

Publication Number Publication Date
EP0532394A1 true EP0532394A1 (fr) 1993-03-17

Family

ID=9416847

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92402424A Withdrawn EP0532394A1 (fr) 1991-09-11 1992-09-04 Dispositif de coupure sans passage naturel par zéro du courant

Country Status (6)

Country Link
EP (1) EP0532394A1 (ja)
JP (1) JPH05205581A (ja)
CN (1) CN1070512A (ja)
BR (1) BR9203516A (ja)
CA (1) CA2077928A1 (ja)
FR (1) FR2681185B1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0758137A1 (en) * 1995-08-08 1997-02-12 Mitsubishi Denki Kabushiki Kaisha Circuit breaking device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006032121A (ja) * 2004-07-16 2006-02-02 Japan Ae Power Systems Corp 高電圧大容量遮断器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE641604C (de) * 1934-03-22 1937-02-06 Frida Strauss Geb Ruppel Schaltanordnung
DE689916C (de) * 1938-05-17 1940-04-09 Voigt & Haeffner Akt Ges Hochleistungsfluessigkeitsschalter mit zwei in Reihe liegenden Unterbrechungsstellen
FR905775A (fr) * 1943-07-05 1945-12-13 Licentia Gmbh Interrupteur électrique comportant plusieurs points de coupure, notamment interrupteur à gaz comprimé
DE1465375A1 (de) * 1964-06-13 1969-01-16 Calor Emag Elek Zitaets Ag Spannungstrennstelle
DE3030367A1 (de) * 1980-07-18 1982-02-18 BBC AG Brown, Boveri & Cie., 5401 Baden, Aargau Hochspannungsleistungsschalter
EP0239783A2 (de) * 1986-04-04 1987-10-07 AEG Sachsenwerk GmbH Elektrische Schalteinrichtung für hohe Schaltspannungen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60167221A (ja) * 1984-02-10 1985-08-30 株式会社日立製作所 直流遮断器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE641604C (de) * 1934-03-22 1937-02-06 Frida Strauss Geb Ruppel Schaltanordnung
DE689916C (de) * 1938-05-17 1940-04-09 Voigt & Haeffner Akt Ges Hochleistungsfluessigkeitsschalter mit zwei in Reihe liegenden Unterbrechungsstellen
FR905775A (fr) * 1943-07-05 1945-12-13 Licentia Gmbh Interrupteur électrique comportant plusieurs points de coupure, notamment interrupteur à gaz comprimé
DE1465375A1 (de) * 1964-06-13 1969-01-16 Calor Emag Elek Zitaets Ag Spannungstrennstelle
DE3030367A1 (de) * 1980-07-18 1982-02-18 BBC AG Brown, Boveri & Cie., 5401 Baden, Aargau Hochspannungsleistungsschalter
EP0239783A2 (de) * 1986-04-04 1987-10-07 AEG Sachsenwerk GmbH Elektrische Schalteinrichtung für hohe Schaltspannungen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0758137A1 (en) * 1995-08-08 1997-02-12 Mitsubishi Denki Kabushiki Kaisha Circuit breaking device

Also Published As

Publication number Publication date
FR2681185A1 (fr) 1993-03-12
BR9203516A (pt) 1993-04-13
JPH05205581A (ja) 1993-08-13
CA2077928A1 (fr) 1993-03-12
FR2681185B1 (fr) 1995-01-13
CN1070512A (zh) 1993-03-31

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