EP0910860A1 - Interrupteur de puissance a gaz comprime - Google Patents

Interrupteur de puissance a gaz comprime

Info

Publication number
EP0910860A1
EP0910860A1 EP97933630A EP97933630A EP0910860A1 EP 0910860 A1 EP0910860 A1 EP 0910860A1 EP 97933630 A EP97933630 A EP 97933630A EP 97933630 A EP97933630 A EP 97933630A EP 0910860 A1 EP0910860 A1 EP 0910860A1
Authority
EP
European Patent Office
Prior art keywords
current
contact piece
bulkhead
compressed gas
switching
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.)
Ceased
Application number
EP97933630A
Other languages
German (de)
English (en)
Inventor
Dieter Lorenz
Ulrich Habedank
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0910860A1 publication Critical patent/EP0910860A1/fr
Ceased legal-status Critical Current

Links

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
    • H01H33/901—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 making use of the energy of the arc or an auxiliary arc
    • H01H33/903—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 making use of the energy of the arc or an auxiliary arc and assisting the operating mechanism
    • 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
    • H01H2033/908—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 using valves for regulating communication between, e.g. arc space, hot volume, compression volume, surrounding volume
    • 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
    • H01H33/44—Devices for ensuring operation of the switch at a predetermined point in the AC cycle

Definitions

  • the invention relates to a compressed gas circuit breaker, in particular for extinguishing an arc of a high short-circuit current, with a first and a second on a common axis with spaced switching pieces and with a gap bridging the distance in the switched-on state, axially displaceable and running during the switch-off process from the first switching piece Contact piece which is at least partially surrounded by a boiler room, a second separating section being connected in series with a first isolating section formed between the first switching piece and the contact piece during the switching-off process.
  • a gas pressure switch with regard to the contact arrangement and the actuation of the axially displaceable contact piece essentially emerges, for example, from DE 40 10 007 AI. Because of the arrangement of a coaxial to the contact arrangement provided heating room, reference is made to DE 41 03 119 AI. Regardless of how these pressure gas switches are designed in detail, they are always subject to the disadvantage that when the switch-off process is made difficult by the hot gas in the boiler room, the separation path is made more difficult, so that the
  • Extinguishing gas only comes from the outside into the interior of the volume containing the secondary contacts of the second isolating section. However, this means that not only does gas have to be provided from the outside, but the compressed gas circuit breaker requires a large spatial extension.
  • the invention has for its object to provide a gas circuit breaker according to the preamble of claim 1, by which regardless of its own time and the hot gas of the heating volume with low drive energy, a reliable switching is achieved with sufficient re-consolidation of the separation section and without enlargement the enclosed space of the compressed gas circuit breaker.
  • the second contact piece is axially movable and is connected to a piston which can be driven in a switch room by acting on heating gas flowing into the switch room from the heating room relative to the contact piece such that the second contact piece runs off the contact piece.
  • An advantageous embodiment of the invention provides that the boiler room is separated from the control room by a bulkhead which has a valve which can be controlled by the current to be switched and the pressure difference between the boiler room and control room.
  • the timing of the opening of the second separation section can be controlled even more precisely by the valve.
  • the invention can also be advantageously configured in that the second switching piece on the inner circumference of a tubular main flow path connected to the compression piston of a compression device is axially displaceable with the formation of a sliding contact, the second separation path after opening of a blowing opening through the current-dependent valve through the as Ring piston formed piston acting heating gas is formed between the second switching piece and the axially displaceable contact piece.
  • the annular piston in the control room can be connected to the compression piston of the compression device via a compression spring, so that after completion of a switch-off process it is ensured that the compression spring ensures that
  • control room downstream of the boiler room is limited in the radial direction by a partition wall running coaxially to the switch axis, which on the one hand is connected to the bulkhead and on the other hand with the compression piston the compression direction is firmly connected, such that an additional with the boiler room in front of the bulkhead in connection with the boiler room is formed on the outer circumference of the partition.
  • the valve consists of one or two ferromagnetic bodies which keep the blow opening in the bulkhead closed in the high current phase against the force of compression springs, but which release it when the current has reached a certain lower value.
  • the current forces of the current path of the compressed gas circuit breaker i.e. the forces that arise between two ferromagnetic bodies in a magnetic field that is built up by the short-circuit current to be switched off as a concentric magnetic field around the current path of the compressed gas circuit breaker, can be used to actuate the current-dependent valve.
  • a ferromagnetic body in the form of a cover plate can be slidably arranged above the blowing opening to form a valve, which is supported by the compression springs for the current path formed by the switching pieces and by the axially displaceable contact piece and is limited by a stop.
  • a ferromagnetic cover plate In order to guide the ferromagnetic cover plate taking into account a low frictional resistance, it is open
  • Rails or in grooves preferably made of PTFE.
  • the current-dependent valve can expediently consist of two cover plates made of a ferromagnetic material, which face each other at the end of the bulkhead facing the switching chamber at the level of the blowing opening and are supported against one another by compression springs. Both designs of the current-dependent valve are suitable for arranging this on the annular piston at the level of the blowing opening, but precautions must then be taken that the annular piston does not consist of a magnetic material, at least in the region of the current-dependent valve.
  • the current-dependent valve can, according to a preferred embodiment of the invention, also consist of a frame consisting of ferromagnetic material, which is arranged concentrically to the blow opening within the bulkhead wall and to which On the side facing away from the heating chamber in front of the blowing opening, a cover plate made of ferromagnetic material is provided, which is preferably supported by four rods attached to the bulkhead and is supported against the bulkhead by compression springs.
  • FIGS. 1 to 3 show the section of part of a compressed gas circuit breaker in the area of its contact arrangement in three phases during the switch-off process
  • FIGS. 4 and 5 show the section of a part of a compressed gas circuit breaker which has been modified compared to FIGS. 1 to 3 in the region of its contact arrangement in two phases during the switching-off process and FIGS. 6 to 8 show three variants of the design of a current-dependent valve which is used in the compressed gas circuit breakers according to FIGS .
  • the compressed gas circuit breaker essentially consists of two on a common one Axially arranged pin-shaped contact pieces 1, 2, which can also be tubular, a coaxially surrounding this, in the switched-on state bridging the contact pieces, axially displaceable contact piece 3, a concentrically arranged first heating chamber 4, the
  • the contact arrangement in FIG. 2 assumes a position in which, after the main current path 5 has been opened, the first isolating path 11 is formed after the sliding contact 10 of the contact piece 3 has been separated from the contact piece 1.
  • Figure 3 shows the compressed gas circuit breaker in the off position.
  • the contact piece 3 is now firmly connected via a bulkhead 13 consisting of insulating material and having a blowing opening 12 with the area of the main current path 5 carrying the movable nominal current contact 7 and thus with the axially displaceable compression piston 9.
  • the space behind the bulkhead 13 is divided into a boiler room 16 and a control room 17 by a partition wall 15 which runs coaxially to the switch axis 14.
  • the partition 15 is on the one hand with the bulkhead 13 and on the other hand with the compression piston 9 firmly connected and takes an annular piston 21, which divides the switching space 17 into two partial spaces 19, 20 and is firmly connected to the second switching piece 2, on axially displaceable.
  • the annular piston 21 is under the action of a arranged compression spring.
  • the compression piston 9 is connected to the switching element 2 via a sliding contact 23 and the second isolating section 24 is opened after the blowing opening 12 by a current-dependent valve after opening the first isolating section 11 through the switching element 2 and the sliding contact 26 of the axially displaceable contact piece 3 is formed.
  • the main current path is first opened. If the nominal current contacts 6, 7 are at a sufficient distance, the first isolating path 11 opens and the arc 27 is drawn. This heats up the gas in the heating chamber 4, which is delimited by the isolating nozzle 28 with its flow channel, so that the pressure of the gas increases and, since the blow opening 12 is initially closed by the current-dependent valve, is further built up. If the cut-off current approaches the current zero crossing, the force effect on the current-dependent valve 25 decreases and the blowing opening 12 to the subspace 17 of the control room 19 is released.
  • the gas thus flows out of the heating chamber 4 and thus also out of the additional heating chamber 16 m into the partial chamber 19, acts on the annular piston 21 and actuates this and thus the second switching element 2 with the opening of the second isolating section 24 between the switching element 2 and the contact element 3 At this time, since the current resulting from the arc 27 of the first isolating section 11 is in the region of the zero crossing, the extinguishing capacity of the second isolating section 24 need not be very high. Extinguishing gas can also be provided from the compression device 8 via the opening 30 in the compression piston 9.
  • the invention thus makes controlled switching in the zero-current crossing independent of the respective proper time of the compressed gas circuit breaker with low drive energy. Not only is a reliable re-consolidation of the separating section achieved, but the effects intended by the invention are achieved without a constructional enlargement of the compressed gas circuit breaker.
  • the compressed gas circuit breaker is in the switch position in which the second separation section 24 is already open.
  • This compressed gas circuit breaker differs from that according to Figures 1 to 3 essentially in that the current-dependent valve is attached directly to the annular piston 21 fixed to the switching element 2 at the level of the blowing opening 12 of the bulkhead 13 and that the annular piston 21 and thus also the switching element 2 is axially displaceably received by the area of the main current path 5 which carries the movable nominal current contact 7.
  • the current-dependent valve 25 according to FIGS. 1 to 5 can be both a current-dependent valve 31 that uses the current forces and a valve 32, 33.
  • a cover plate 34 made of ferromagnetic material is displaceably arranged above the blowing opening 12, which is formed by compression springs 35 for the switching elements 1, 2 and the contact piece 3
  • the current-dependent valve 32 shown in FIG. 7 uses the forces that arise between two ferromagnetic bodies in a magnetic field. Therefore there are two cover plates 38, 39 made of a ferromagnetic material at the level of the blow opening 12, which are also supported against one another by compression springs 40. Both this current-dependent valve 33 and that according to FIG. 6 are particularly suitable if the current-dependent valve is to be arranged on the annular piston 21.
  • the current-dependent valve 33 also uses the forces that arise between two ferromagnetic bodies in a magnetic field.
  • a frame made of ferromagnetic material is provided concentrically with the blowing opening within the bulkhead 13.
  • a cover plate 42 made of ferromagnetic material is furthermore arranged in front of the blowing opening 12, which is guided by rods fastened to the bulkhead wall 13 and is supported against the bulkhead wall 13 by compression springs 44. With the interposition of a spring body 45, the movement of the cover plate 42 made of ferromagnetic material is limited by a stop 46, as can be seen from FIGS. 1 to 3.

Landscapes

  • Circuit Breakers (AREA)

Abstract

L'invention concerne un interrupteur de puissance à gaz comprimé comportant deux éléments de contact (1, 2), un élément de contact (3) contournant ces derniers à l'état connecté, et deux distances de sectionnement (11, 24) placées en série. Le deuxième élément de contact (2) opposé à la première distance de sectionnement (11), est monté de façon coulissante dans le sens axial au moyen d'un piston annulaire (21) pour former une chambre de commutation (17) séparée d'une chambre de chauffage par une cloison (13) présentant une soupape (25) dépendant du courant. La deuxième distance de sectionnement (24) est formée entre le deuxième élément de contact (2) et l'élément de contact (3) après ouverture d'un orifice de soufflage (12). L'invention peut s'utiliser en particulier dans le domaine des interrupteurs de puissance à gaz comprimé avec une unité de compression.
EP97933630A 1996-07-10 1997-07-09 Interrupteur de puissance a gaz comprime Ceased EP0910860A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19629475A DE19629475A1 (de) 1996-07-10 1996-07-10 Druckgasleistungsschalter
DE19629475 1996-07-10
PCT/DE1997/001471 WO1998001877A1 (fr) 1996-07-10 1997-07-09 Interrupteur de puissance a gaz comprime

Publications (1)

Publication Number Publication Date
EP0910860A1 true EP0910860A1 (fr) 1999-04-28

Family

ID=7800464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97933630A Ceased EP0910860A1 (fr) 1996-07-10 1997-07-09 Interrupteur de puissance a gaz comprime

Country Status (5)

Country Link
US (1) US6207918B1 (fr)
EP (1) EP0910860A1 (fr)
JP (1) JP2000514237A (fr)
DE (1) DE19629475A1 (fr)
WO (1) WO1998001877A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19859764A1 (de) * 1998-12-23 2000-06-29 Abb Research Ltd Selbstblasschalter
DE10125100A1 (de) * 2001-05-23 2002-11-28 Abb Patent Gmbh Selbstblas-Löschkammer eines Hochspannungs-Leistungsschalters
JP2005286855A (ja) 2004-03-30 2005-10-13 Hitachi Ltd 携帯型情報端末装置
EP1780741B2 (fr) * 2005-11-01 2013-03-06 ABB Technology Ltd Switching chamber of a high voltage switch with a heating volume for admission of pressure gas
DE602006012024D1 (de) * 2006-05-29 2010-03-18 Abb Technology Ag Blaskolbenschalter mit einem Überdruckventil
DE502007006438D1 (de) * 2007-10-16 2011-03-17 Abb Research Ltd Einem von einem überstromventil gesteuerten entlastungskanal
WO2013087687A1 (fr) 2011-12-13 2013-06-20 Abb Technology Ag Disjoncteur doté d'une injection de fluide
FR3001575B1 (fr) * 2013-01-29 2015-03-20 Alstom Technology Ltd Disjoncteur pourvu de moyens reduisant l'arc de commutation entre contacts permanents
US9865418B2 (en) * 2015-12-08 2018-01-09 Siemens Industry, Inc. Circuit breakers, arc expansion chambers, and operating methods
EP3404689B1 (fr) * 2017-05-19 2023-08-16 General Electric Technology GmbH Disjoncteur comprenant une chambre de compression améliorée

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2209287C3 (de) * 1972-02-22 1974-12-12 Siemens Ag, 1000 Berlin Und 8000 Muenchen Elektrischer Druckgasschalter
DE2350832B2 (de) * 1973-10-10 1980-05-08 Calor-Emag Elektrizitaets-Aktiengesellschaft, 4030 Ratingen Hochspannungsschalter
DE7905497U1 (de) * 1979-02-27 1983-06-30 Siemens AG, 1000 Berlin und 8000 München Druckgasschalter
US4663504A (en) * 1983-04-11 1987-05-05 Raychem Corporation Load break switch
DE3425633A1 (de) * 1984-06-07 1985-12-12 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter
DE3437707A1 (de) * 1984-09-20 1986-03-27 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter
FR2629260B1 (fr) 1988-03-23 1994-07-08 Alsthom Disjoncteur a haute tension a faible energie de manoeuvre
FR2647949B1 (fr) * 1989-05-31 1994-02-18 Gec Alsthom Sa Disjoncteur a haute tension a gaz dielectrique de soufflage
DE4010007A1 (de) 1990-03-26 1991-10-02 Siemens Ag Druckgasleistungsschalter mit antreibbarem kompressionskolben
DE4103119A1 (de) 1991-01-31 1992-08-06 Siemens Ag Druckgasschalter
DE4339923A1 (de) * 1993-11-19 1995-05-24 Siemens Ag Elektrischer Druckgasschalter
DE19536673A1 (de) * 1995-09-30 1997-04-03 Asea Brown Boveri Leistungsschalter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9801877A1 *

Also Published As

Publication number Publication date
US6207918B1 (en) 2001-03-27
DE19629475A1 (de) 1998-01-15
WO1998001877A1 (fr) 1998-01-15
JP2000514237A (ja) 2000-10-24

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