EP0591039A1 - Hochspannung selbst-Blaslastscharter mit Schnittkammer mit reduzierter Gaskompression - Google Patents

Hochspannung selbst-Blaslastscharter mit Schnittkammer mit reduzierter Gaskompression Download PDF

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Publication number
EP0591039A1
EP0591039A1 EP93402358A EP93402358A EP0591039A1 EP 0591039 A1 EP0591039 A1 EP 0591039A1 EP 93402358 A EP93402358 A EP 93402358A EP 93402358 A EP93402358 A EP 93402358A EP 0591039 A1 EP0591039 A1 EP 0591039A1
Authority
EP
European Patent Office
Prior art keywords
piston
tube
circuit breaker
movable contact
assembly
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.)
Granted
Application number
EP93402358A
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English (en)
French (fr)
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EP0591039B1 (de
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.)
Grid Solutions SAS
Original Assignee
GEC Alsthom T&D 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 T&D SA filed Critical GEC Alsthom T&D SA
Publication of EP0591039A1 publication Critical patent/EP0591039A1/de
Application granted granted Critical
Publication of EP0591039B1 publication Critical patent/EP0591039B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H33/88—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
    • H01H33/905—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 compression volume being formed by a movable cylinder and a semi-mobile piston

Definitions

  • the invention relates to a high-voltage circuit breaker of the self-blowing type having a cut-off chamber with reduced gas compression.
  • Document EP-0475270 discloses a high-voltage circuit breaker of the self-blowing type, comprising an insulating envelope surrounding an expansion chamber filled with a dielectric gas under pressure, two arcing contacts cooperating with each other, one at least forming part of a movable contact assembly secured to an operating member and adapted to be moved axially in the envelope between a closed position and an open position, the movable contact assembly being constituted by two coaxial tubes to delimit, on either side of a ring connecting the tubes, a constant volume blowing chamber closed by a blowing nozzle and a compression chamber communicating with the blowing chamber and closed by a semi-piston mobile.
  • the gas in the compression chamber is compressed because the distance between the piston and the ring separating the compression chamber from the blowing chamber decreases.
  • the dielectric gas is compressed during the entire movement of the movable contact assembly between the closed position and the open position. Moving the movable contact assembly requires a certain amount of energy. The amount of energy required is greater the greater the gas in the compression chamber is compressed during the entire stroke of the movable contact assembly.
  • the object of the invention is to reduce the energy consumption of the circuit breaker during an opening operation.
  • the invention relates to a high voltage circuit breaker of the self-blowing type, comprising a insulating envelope surrounding an expansion chamber filled with a dielectric gas under pressure, two arcing contacts cooperating with each other, at least one forming part of a movable contact assembly secured to an operating member and suitable for be moved axially in the envelope between a closed position and an open position, the movable contact assembly consisting of a first tube and a second tube coaxial with the first tube to delimit, on either side of a first ring connecting the first and second tubes, a constant volume blowing chamber closed by a blowing nozzle and a compression chamber communicating with the blowing chamber and closed by a piston, characterized by means for immobilizing the piston during a first part of the movement of the movable contact assembly between the closed position and the open position and a means for axially moving the piston with the assembly of c ontact mobile during a second part of this same movement of the mobile contact assembly.
  • the extinction of the arc occurring between the arcing contacts during an opening operation is effected by means of compression of the gas in the compression chamber.
  • the extinction of the arc obtained by a flow of gas coming from the compression chamber takes place before the movement of the movable contact assembly has ended. Therefore, it is not necessary to compress the gas in the compression chamber during the entire movement of the movable contact assembly. From the moment the piston moves with the movable contact assembly, the amount of energy required to operate the movable contact assembly is very reduced because there is no more gas compression .
  • the means for axially displacing the piston consists of a drive member integral with the contact assembly mobile which drives a stop integral with the piston during the second part of the movement of the mobile contact assembly, this stop being disposed on the path of the drive member.
  • the piston is connected to a third tube provided with at least one lumen in which slides a finger integral with the first tube and which extends radially with respect to the latter in the direction of the second tube.
  • the means for immobilizing the piston consists of a spring arranged between the drive member and the piston and by a fixed retaining member cooperating with the piston. This spring also makes it possible to compensate for the effects of gas overpressure in the compression chamber in the event of a break in high currents.
  • FIGS. 1A, 1B, 1C are views in longitudinal section of a circuit breaker having a breaking chamber with limited compression, respectively in the closed position, in the end of compression position and in the open position.
  • FIGS. 2A, 2B and 2C illustrate the application of the invention to a circuit breaker of the end contact type, and partially represent, in longitudinal section, a circuit breaker with end contacts respectively in the closed position, in the end position of compression and in the open position.
  • a breaking chamber will be described, it being understood that a high voltage circuit breaker, may comprise, for each phase, several breaking chambers of the type which will be described.
  • FIGS. 1A to 1C the same references designate identical elements.
  • the reference 1 designates an insulating envelope, preferably of porcelain, delimiting an expansion chamber 2 filled with a gas with good properties dielectric, for example sulfur hexafluoride under a pressure of a few bars.
  • a gas with good properties dielectric for example sulfur hexafluoride under a pressure of a few bars.
  • the circuit breaker includes a fixed assembly and a movable contact assembly.
  • the fixed assembly comprises an arcing contact 3, consisting of a metal tube, the end 3A of which is made of a material resistant to the effects of the arcing, for example an alloy based on tungsten.
  • the fixed assembly also includes a fixed permanent contact 4 consisting of fingers protected by a corona hood 5. The arcing contact and the fixed permanent contact are electrically connected to a first socket, not shown.
  • the movable contact assembly comprises an operating part 6 passing through the chamber 2 in a sealed manner and connected to a mechanism not shown.
  • a metallic assembly comprising two coaxial tubes 7 and 8, the tube 8 having a diameter larger than the tube 7.
  • the two tubes 7, 8 are connected together by a metal ring 9. These tubes and this crown are preferably made in one piece from machining.
  • the tube 7 constitutes the movable arcing contact. Its end 7A is made of a material resistant to the effects of the arc and cooperates with the contact 3-3A.
  • the tube 8 has one end 8A, of reduced diameter and carrying a blowing nozzle 10 made of insulating material.
  • the tubular portion 8A constitutes the permanent movable contact of the circuit breaker and cooperates, when the circuit breaker is in the engaged position (closed position) with the fingers 4 as shown in FIG. 1A.
  • the end 8A of the tube 8, the blowing nozzle 10, the tube 7 and the crown 9 define a blowing chamber 17.
  • the crown 9, the tubes 7 and 8 and a piston 11 define a compression chamber 18 separated from the blowing chamber through the crown 9.
  • the piston slides axially between the tubes 7 and 8 in a sealed manner.
  • the piston 11 is connected to a tube 12 coaxial with the tubes 7 and 8.
  • the free end of the tube 12 is connected to a ring 12A forming a collar.
  • the crown 12A cooperates with a crown 14A connected to a fixed tube 14 coaxial with the tube 12, the crown 14A forming an end of travel stop for the tube 12 during a closing operation.
  • the tube 14 is electrically connected to a second outlet not shown.
  • the tube 14 also supports a permanent contact formed by fingers 16 in electrical contact with the tube 8. It should be understood that the crown 11, the tube 12 and the crown 12A form a single piece coming from machining.
  • One or more springs 15 are arranged between the finger (s) 7B and the piston 11.
  • the piston 11 is equipped with a unidirectional valve 11A allowing gas circulation from the interrupting chamber 2 to the compression chamber.
  • the crown 9 is equipped with a unidirectional valve 9A allowing gas circulation from the compression chamber 18 to the blowing chamber 17.
  • the circuit breaker works as follows.
  • the operating tube 6 is actuated to move the movable contact assembly to the left as indicated by the arrow f in FIG. 1A.
  • the spring 15 is compressed because the distance between the finger 7B and the piston 11 decreases. Indeed, the finger 7B moves to the left while the piston is held stationary because the crown 12A is retained by the crown 14A.
  • the compression chamber 18 is filled with gas coming from the cutting chamber 2 because the distance from the ring 9 of the piston 11 causes the valve 11A to open.
  • the blowing chamber 17 is filled with gas from the compression chamber 18 due to the opening of the unidirectional valve 9A. In the engaged position, the current flows through the fingers 4, the tube 8A, 8, the fingers 16, the tube 14.
  • the operating tube 6 is actuated to move the movable contact assembly to the right as indicated by the arrow o in FIGS. 1B and 1C.
  • Permanent contacts 4 and 8A separate.
  • Current is switched on the arcing contacts 3-3A and 7A and an arcing occurs between the arcing contacts when they separate.
  • the electric arc heats the gas in the region of the arc which causes an increase in the pressure in the blowing chamber.
  • the arc current follows a frequency system with a sinusoidal curve and when the current value approaches zero crossing, the overpressure in the chamber 17 is evacuated through the channel delimited by the tube 7A and the nozzle 10 and causes the blowing the arc.
  • the gas under pressure in the blowing chamber blowing passes through the outlet of the nozzle to evacuate into the cutting chamber 2.
  • the electric arc is cooled by the circulation of gas and cut off at the zero crossing of the current.
  • the gas in the compression chamber is compressed because the distance between the crown 9 and the piston 11 decreases.
  • the finger 7B moves freely in the lumen 13 of the tube 12 between a left end of the lumen and a right end of the lumen while the crown 12A of the tube 12 is held in abutment against the crown 14A due to the action of the spring 15 on the piston 11. This causes a rise in pressure in the compression chamber.
  • finger 7B comes into abutment against the right end of the light after having traversed a distance Dx, it drives the tube 12 and therefore the piston 11 until the end of the movement of the movable contact assembly.
  • the compression of the gas in the compression chamber 18 is interrupted and the energy required to actuate the operating tube is reduced.
  • the pressure in the blowing chamber decreases as described above, and the unidirectional valve 9A opens. This leads to a decrease in the pressure in the compression chamber which causes gas to flow from the compression chamber to the blowing chamber and then to the region of the arc.
  • the high density cold gas from the compression chamber then replaces the low density hot gas in the arc region which causes a considerable reduction in the temperature in the blowing chamber and therefore better operation of the circuit breaker.
  • FIGS. 2A to 2C illustrate the application of the invention to a medium or high voltage circuit breaker of the type with end contacts.
  • the movable assembly comprises a metal cylinder 21 electrically connected to a socket not shown by contact fingers 22: the cylinder 21 is mechanically connected by its bottom 21A to an operating rod 23; the cylinder 21 delimits with an annular transverse partition 24 and an insulating nozzle 25, an expansion volume V1.
  • the partition 24 is provided with at least one unidirectional valve 26.
  • the end 30A of the tube 30 is made of an alloy resistant to the effects of the arc.
  • the cylinder 21, the partition 26, the piston 27 and the tube 28 delimit a compression volume V2.
  • a sliding contact 33 allows the current to flow from the tube 28 to the partition 26.
  • piston 27 is provided with a unidirectional valve 35 and that the bottom 21A is pierced with holes 36.

Landscapes

  • Circuit Breakers (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP93402358A 1992-09-29 1993-09-27 Hochspannung selbst-Blaslastscharter mit Schnittkammer mit reduzierter Gaskompression Expired - Lifetime EP0591039B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9211588 1992-09-29
FR9211588A FR2696274B1 (fr) 1992-09-29 1992-09-29 Disjoncteur à haute tension à auto-soufflage ayant une chambre de coupure à compression de gaz réduite.

Publications (2)

Publication Number Publication Date
EP0591039A1 true EP0591039A1 (de) 1994-04-06
EP0591039B1 EP0591039B1 (de) 1996-07-10

Family

ID=9433999

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93402358A Expired - Lifetime EP0591039B1 (de) 1992-09-29 1993-09-27 Hochspannung selbst-Blaslastscharter mit Schnittkammer mit reduzierter Gaskompression

Country Status (7)

Country Link
EP (1) EP0591039B1 (de)
CN (1) CN1042770C (de)
AT (1) ATE140341T1 (de)
CA (1) CA2107017A1 (de)
DE (1) DE69303568T2 (de)
FR (1) FR2696274B1 (de)
MX (1) MX9305958A (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0664552A1 (de) * 1994-01-25 1995-07-26 Gec Alsthom T & D Sa Autopneumatischer Druckgasschalter mit Doppelbewegung
FR2720188A1 (fr) * 1994-05-19 1995-11-24 Gec Alsthom T & D Sa Disjoncteur à autocompression réduite.
FR2724259A1 (fr) * 1994-09-06 1996-03-08 Gec Alsthom T & D Sa Disjoncteur a auto-soufflage a piston semi-mobile
FR2745947A1 (fr) * 1996-03-11 1997-09-12 Gec Alsthom T & D Sa Disjoncteur a autocompression reduite
FR2748598A1 (fr) * 1996-05-13 1997-11-14 Gec Alsthom T & D Sa Disjoncteur a haute tension a auto-soufflage
FR2756413A1 (fr) * 1996-11-28 1998-05-29 Gec Alsthom T & D Sa Disjoncteur a piston semi-mobile
FR2761520A1 (fr) * 1997-03-27 1998-10-02 Gec Alsthom T & D Sa Disjoncteur a moyenne tension a faible energie de manoeuvre
FR2766609A1 (fr) * 1997-07-24 1999-01-29 Gec Alsthom T & D Sa Interrupteur a gaz a volume d'expansion thermique compressible
FR2817654A1 (fr) * 2000-12-06 2002-06-07 Alstom Procede pour optimiser le fonctionnement d'un disjoncteur en recuperant l'energie cinetique de son contact mobile
EP2045827A1 (de) 2007-10-03 2009-04-08 Areva T&D Sa Trennkammer eines Überlastschalters mit doppeltem Kompressionsvolumen
EP2278604A1 (de) 2009-07-21 2011-01-26 ABB Technology AG Hochspannungsschalter
US7964816B2 (en) 2005-11-03 2011-06-21 Areva T&T SA Interrupting chamber having two compression chambers

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2949170B1 (fr) * 2009-08-14 2011-11-25 Areva T & D Sas Chambre de coupure pour disjoncteur a moyenne ou haute tension a energie de manoeuvre reduite
CN114628189B (zh) * 2021-12-23 2024-05-24 国网浙江省电力有限公司 一种压气式灭弧室及断路器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1559522A (de) * 1967-04-13 1969-03-07
FR2210814A1 (de) * 1972-12-14 1974-07-12 Fuji Electric Co Ltd
FR2291601A1 (fr) * 1974-11-15 1976-06-11 Alsthom Cgee Dispositif de coupure a autocompression
EP0475270A2 (de) * 1990-09-11 1992-03-18 Asea Brown Boveri Ab Hochspannungsschalter mit Selbstbeblasung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1559522A (de) * 1967-04-13 1969-03-07
FR2210814A1 (de) * 1972-12-14 1974-07-12 Fuji Electric Co Ltd
FR2291601A1 (fr) * 1974-11-15 1976-06-11 Alsthom Cgee Dispositif de coupure a autocompression
EP0475270A2 (de) * 1990-09-11 1992-03-18 Asea Brown Boveri Ab Hochspannungsschalter mit Selbstbeblasung

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0664552A1 (de) * 1994-01-25 1995-07-26 Gec Alsthom T & D Sa Autopneumatischer Druckgasschalter mit Doppelbewegung
AU693174B2 (en) * 1994-05-19 1998-06-25 Gec Alsthom T & D Sa A circuit-breaker having low self-compression
FR2720188A1 (fr) * 1994-05-19 1995-11-24 Gec Alsthom T & D Sa Disjoncteur à autocompression réduite.
EP0684622A1 (de) 1994-05-19 1995-11-29 Gec Alsthom T Et D Sa Lastschalter mit reduzierter Kompression
US5600111A (en) * 1994-05-19 1997-02-04 Gec Alsthom T & D Sa Circuit-breaker having low self-compression
CN1074163C (zh) * 1994-05-19 2001-10-31 Gec阿尔斯托姆T&D公司 具有低自压缩功能的断路器
FR2724259A1 (fr) * 1994-09-06 1996-03-08 Gec Alsthom T & D Sa Disjoncteur a auto-soufflage a piston semi-mobile
EP0701264A1 (de) * 1994-09-06 1996-03-13 Gec Alsthom T & D Sa Selbstbeblasener lastschalter mit halbbeweglichem Kolben
FR2745947A1 (fr) * 1996-03-11 1997-09-12 Gec Alsthom T & D Sa Disjoncteur a autocompression reduite
US5780799A (en) * 1996-03-11 1998-07-14 Gec Alsthom T & D Sa Reduced autocompression circuit-breaker
EP0795883A1 (de) * 1996-03-11 1997-09-17 Gec Alsthom T & D Sa Lastschalter mit reduzierter Kompression
US5898150A (en) * 1996-05-13 1999-04-27 Gec Alsthom & D Sa Gas-blast high-voltage circuit-breaker
FR2748598A1 (fr) * 1996-05-13 1997-11-14 Gec Alsthom T & D Sa Disjoncteur a haute tension a auto-soufflage
EP0807946A1 (de) * 1996-05-13 1997-11-19 Gec Alsthom T & D Sa Hochspannungs-Blaskolbenschalter
FR2756413A1 (fr) * 1996-11-28 1998-05-29 Gec Alsthom T & D Sa Disjoncteur a piston semi-mobile
EP0845796A1 (de) * 1996-11-28 1998-06-03 Gec Alsthom T & D Sa Leistungsschalter mit halbbeweglischem Kolben
US5859399A (en) * 1996-11-28 1999-01-12 Gec Alsthom T & D Sa Circuit breaker having semi-moving piston
FR2761520A1 (fr) * 1997-03-27 1998-10-02 Gec Alsthom T & D Sa Disjoncteur a moyenne tension a faible energie de manoeuvre
EP0895262A1 (de) * 1997-07-24 1999-02-03 Gec Alsthom T & D Sa Gasschalter mit komprimierbaren Volum und Wärmeausdehnung
US5939692A (en) * 1997-07-24 1999-08-17 Gec Alsthom T & D Sa Gas-filled interrupter with compressible thermal expansion chamber
FR2766609A1 (fr) * 1997-07-24 1999-01-29 Gec Alsthom T & D Sa Interrupteur a gaz a volume d'expansion thermique compressible
FR2817654A1 (fr) * 2000-12-06 2002-06-07 Alstom Procede pour optimiser le fonctionnement d'un disjoncteur en recuperant l'energie cinetique de son contact mobile
US7964816B2 (en) 2005-11-03 2011-06-21 Areva T&T SA Interrupting chamber having two compression chambers
EP2045827A1 (de) 2007-10-03 2009-04-08 Areva T&D Sa Trennkammer eines Überlastschalters mit doppeltem Kompressionsvolumen
US8044318B2 (en) 2007-10-03 2011-10-25 Areva T&D Sa Interrupting chamber of a circuit-breaker having two compression volumes
EP2278604A1 (de) 2009-07-21 2011-01-26 ABB Technology AG Hochspannungsschalter

Also Published As

Publication number Publication date
EP0591039B1 (de) 1996-07-10
ATE140341T1 (de) 1996-07-15
FR2696274A1 (fr) 1994-04-01
CA2107017A1 (fr) 1994-03-30
CN1042770C (zh) 1999-03-31
MX9305958A (es) 1994-04-29
FR2696274B1 (fr) 1994-11-04
DE69303568D1 (de) 1996-08-14
DE69303568T2 (de) 1996-11-07
CN1095520A (zh) 1994-11-23

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