EP2087498B1 - Disjoncteur haute tension à arc de coupure tournant - Google Patents

Disjoncteur haute tension à arc de coupure tournant Download PDF

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Publication number
EP2087498B1
EP2087498B1 EP07821138A EP07821138A EP2087498B1 EP 2087498 B1 EP2087498 B1 EP 2087498B1 EP 07821138 A EP07821138 A EP 07821138A EP 07821138 A EP07821138 A EP 07821138A EP 2087498 B1 EP2087498 B1 EP 2087498B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
winding
ring
breaker according
slot
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.)
Not-in-force
Application number
EP07821138A
Other languages
German (de)
English (en)
Other versions
EP2087498A1 (fr
Inventor
Patrick Huguenot
Jochen Kiefer
Thomas Schoenemann
Markus Keller
Zoran Andjelic
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.)
ABB Research Ltd Switzerland
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ABB Research Ltd Switzerland
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Filing date
Publication date
Application filed by ABB Research Ltd Switzerland filed Critical ABB Research Ltd Switzerland
Priority to EP07821138A priority Critical patent/EP2087498B1/fr
Publication of EP2087498A1 publication Critical patent/EP2087498A1/fr
Application granted granted Critical
Publication of EP2087498B1 publication Critical patent/EP2087498B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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 present invention relates to a high voltage circuit breaker according to the preamble of claim 1.
  • the energy of a switching arc rotating in a magnetic field is utilized in order to generate an extinguishing gas provided for blowing the switching arc.
  • the switching arc rotates in a housing which is filled with an insulating gas with a pressure of up to a few bar.
  • the quenching gas is stored in a heating volume, which is connected via a generally annular channel with an arc zone receiving the switching arc.
  • a switch of the type mentioned is described in EP 0 731 482 A2 ,
  • This switch has a power-current path arranged in an insulating gas-filled housing with two contact pieces displaceable relative to one another along an axis, one of which has an arc contact, an arc runner ring and a cylindrical coil surrounding the arc contact in coaxial arrangement. Through this coil flows when turned off the current to be disconnected.
  • the magnetic field of this current acts on a switching arc which opens on the arc running ring when the power current path is opened.
  • Under the influence of electrodynamic forces now held on the raceway switching arc rotates about the axis and heats the insulating gas.
  • formed compressed gas is passed from the arc of arc receiving receiving arc zone in a heating volume. As the current to be disconnected approaches a zero crossing, the compressed gas then flows from the heating volume into the arc zone and inflates the switching arc until the current to be disconnected is interrupted.
  • Another switch in which the rotation of the switching arc in the magnetic field of a current flowing through the current to be interrupted coil arrangement is used to interrupt a current, is in FR 2 418 962 A described.
  • the coil arrangement has two coils arranged on a common axis with windings wound in opposite directions.
  • the coil has two oppositely wound windings, which are concentrically arranged to form an inner and an outer winding, and is provided in coaxial arrangement between the arcing contact and the inner winding, a ferromagnetic first sleeve.
  • the magnetic flux density at the location of the arc runner and thus also the electromagnetic force on the switching arc therefore increase proportionally with the current, so that the pressure of the extinguishing gas increases in proportion to the strength of the small current to be interrupted.
  • the magnetic flux density at the location of the arc runner grows then more slowly with increasing current than when breaking a small current, since with saturated ferromagnetic core, the magnetic flux density now evenly distributed on all materials, regardless of whether Ferromagnetikum, conductor material or ambient air.
  • the magnetic field of the outer winding influences the oppositely directed field of the inner winding more than before when interrupting a small current.
  • the heating volume can be kept small using simple means and accordingly designed the switch to save space and manufactured inexpensively.
  • an up to 20% higher magnetic field can be achieved at the location of the arc running ring when interrupting smaller, typically 5 to 25 kA currents than with a comparably dimensioned switch, but without a counterwinding. Accordingly, when switching large currents, typically 150 to 300 kA, the magnetic field is reduced by up to 40% compared with the comparison switch according to the prior art, while when switching medium currents, typically 50 to 100 kA, only insignificantly State of the art changes.
  • the Inner winding have a greater number of turns than the outer winding.
  • the arc runner facing end faces of the inner and outer winding each in the manner of a ring form and connect the power connector of the inner winding in an electrically conductive manner with the arc runner.
  • the aforementioned conductor is advantageously designed in the manner of a ring. Facing away from the arc ring end faces of the inner and outer winding can then be supported on the ring and held with simple fasteners.
  • a particularly stable coil is achieved with little effort when the conductor is formed in the outer winding and formed in the manner of a ring, and when a side facing away from the arc running end face of the inner winding is supported on the ring.
  • At least one predominantly axially and radially guided slot is arranged at least in the first or the second sleeve or in the ring-shaped current connection of the inner winding or the outer winding.
  • first and / or second sleeve advantageously at least two uniformly distributed in the direction of access slots are arranged.
  • a first slot is formed in the power connection of the outer winding, and generally only a second slot is formed in the current connection of the inner winding.
  • a Wirbelstromunterwithder third slot is formed with advantage in the inner and the outer winding electrically conductively interconnecting conductor.
  • the first, the second and the third slot may extend radially in the same direction or at least two of the three slots may extend radially in different directions.
  • circuit breaker is a generator switch and can turn off at high voltages up to 100 kV currents up to a still permissible maximum short-circuit breaking current of typically 300 kA.
  • a filled with a compressed insulating gas such as based on sulfur hexafluoride, nitrogen or carbon dioxide or a gas mixture based on one or more of these gases, housing 10 and received by the housing 10 and largely axially symmetrical contact arrangement with two along an axis A relative
  • a compressed insulating gas such as based on sulfur hexafluoride, nitrogen or carbon dioxide or a gas mixture based on one or more of these gases
  • the apparent tubular, but optionally also massively configured, arc contact 21 is guided by an insulating tube 11 acting as an auxiliary nozzle and contacted in the on state of the switch (left half of Fig.1 ) the contact finger having arc contact 31.
  • the insulating tube 11 and an am Switching piece 30 held insulating 12 limit an annular heating channel 13, which when switched off (right half of Fig.1 ) connects an arc zone, which receives a switching arc S, with a heating volume 14.
  • the switching piece 30 is fixedly held in the housing 10 and formed largely in the manner of a hollow cylinder.
  • the switching piece 30 includes in coaxial arrangement from the inside to the outside, the tubular, designed in the manner of a tulip arcing contact 31, the sleeve 32, a two-winding inner winding 40 of the coil C, another ferromagnetic sleeve 33 and in the opposite direction to the inner winding 40 wound and only a winding having outer winding 50 of the coil C.
  • the contact piece 30 At its the contact piece 20 facing end face, the contact piece 30 an arc runner 15 made of a erosion resistant material, in particular graphite, a retaining ring 16 for fixing the arc runner 15 on an end face of the inner winding 40 and the insulating 12, which is seated on end faces of the retaining ring 16, the sleeve 33 and the outer winding 50 and the arc running ring 15 radially outwardly limited.
  • a erosion resistant material in particular graphite
  • the arc faces of the ring 15 facing end surfaces of the inner 40 and the outer winding 50 each have a designed in the manner of a ring power connection 41 and 51, respectively.
  • the power connector 41 is electrically connected to the arc runner 15.
  • the power connection 51 serves as a power connection of the switching piece arrangement and sets the switching piece 30 on the housing 10.
  • the two turns of the inner winding 40 are designated by the reference numeral 43, whereas the single turn of the outer winding 50 is designated by the reference numeral 54.
  • axially aligned slots 321 and 331 are formed in the ferromagnetic sleeve 32 and 33 . As explained later, these slots serve as well as in the windings 40, 50 molded - only from the FIGS. 3 to 5 apparent - slits 42, 53, 55 of the suppression of eddy currents.
  • the individual parts of the contact piece 30 are generally connected by screws.
  • the sleeve 32 is seated with its downwardly facing end face on a flange 311 of the tulip-shaped arc contact 31 and is screwed to this flange.
  • both parts can be connected to each other by press fit.
  • the generally aluminum or copper resp. an aluminum or copper alloy existing windings 40, 50 as well as the ferromagnetic sleeve 33 are screwed to the running as a ring plate conductor 52.
  • the arc runner 15 is fixed electrically conductive by means of the metal retaining ring 16 at the power connector 41 of the inner winding 40.
  • the power connector 41 and thus also the coil C are fixed by means of screws or press fit on the upper end side of the sleeve 32.
  • Cavities provided between the individual parts such as insulating distances between the turns 43, 54 and the current terminals 41, 51 of the coil C, between the windings 40, 50 of the coil, the ferromagnetic sleeves 32, 33 and the arcing contact 31 or like the slots 42, 53, 55, are filled with insulating material. This material is in Fig.1 not shown.
  • the nominal current path N and the power current path L are closed and the switch carries current, which flows predominantly in the rated current path and only with a share of about 1% in the power current path.
  • the rated current path N opens first.
  • the current to be disconnected now commutes completely into the power current path L and flows from the arcing contact 21 via the arcing contact 31, the ferromagnetic sleeve 32, the inner winding 40, the current conductor 52 and the outer winding 50 wound in the opposite direction to the inner winding to the power connection 51st
  • arc contact 21 is disengaged from the fixed contact 30 and then forms between the arcing contact 21 and contact fingers of the arcing contact 31, a switching arc S, which commutes to the arc runner 15 (right half of Fig.1 ).
  • the commutation is rapid, since the sleeve 32 and the Arcing contact 31 in this case be taken from the power current path L and the current to be disconnected now flows from the arcing contact 21 via the switching arc S, the arc runner 31, the inner winding 40, the current conductor 52 and the opposite direction to the inner winding wound outer winding 50 to the power connector 51.
  • the current I to be disconnected flows essentially in the axial direction.
  • the magnetic flux density B caused by the coil C and the ferromagnetic sleeves 32 and 33 is in the range of Arc run 15 mainly aligned radially. Therefore acting on the arc running at the arc running ring 15 switching arc S has a circumferentially acting electrodynamic force, causes a rotation of the arc about the axis A and the pressure gas required for arc extinction is generated.
  • the magnetic field of the outer winding 50 influences the oppositely directed field of the inner winding 40 more than before with smaller currents.
  • the direction and magnitude of the magnetic flux density B change, respectively. the size of a predominantly radially oriented component of B continuously.
  • the size of this component is greatly reduced, so that a lower electrodynamic force acts on the switching arc S than in an identically designed switch according to the prior art with the same direction current flowing through the coil. Therefore, the B-I characteristic curve of the coil C flattens considerably more in the region of large currents than in the case of the coil of the switch of the state of the art, through which current flows in the same direction.
  • the two ferromagnetic sleeves 32 and 33 relate on the one hand, the two ferromagnetic sleeves 32 and 33.
  • the geometric dimension, in particular the wall thickness of the sleeve 32 is a Ferromagnetikum with a low coercive force, such as soft iron or an alloyed with silicon iron alloy. It is thus achieved at low currents already a relatively high magnetic flux density at the location of the arc runner 15.
  • each slot formed as a ring power connections 41 and 51 of the inner 40 , .der outer winding 50 each formed at least one predominantly axially and radially guided slot.
  • These slots are out Fig.1 not to be seen, but are in a corresponding manner in the embodiment of the inventive switch after the FIGS. 3 and 4 and in the embodiment according to Figure 5 realized there and designated by the reference numeral 42 for the power connector 41 and the reference numeral 53 for the power connector 51.
  • These two slots are in the axial direction at most up to a to the power supply 41 and 51 of the inner 40 and the outer winding 50 subsequent turn 43 of the inner or 54 of the outer winding out. In the radial direction, they can have the same direction, but can also point radially in different directions and, for example, be opposite (FIG. Figure 5 ) can be arranged.
  • a vortex current suppressing slot 55 is also formed in the inner conductor and the outer winding electrically interconnecting conductor 52 is formed.
  • the three slots 42, 53 and 55 can look like Fig. 4 it can be seen - extend radially in the same direction. Depending on the number of turns of the two windings 40, 50 and the electrodynamic forces occurring at both windings, however, at least two of the three slots may also extend radially in different directions ( Figure 5 ).
  • Whirl current suppressing slots 321 and 331 may also be provided on the two ferromagnetic sleeves 32 and 33, respectively.
  • at least two, typically ten to thirty, in the direction of uniformly distributed, axially aligned slots are formed in each sleeve.
  • the slots 321 and 331 may be passed through the entire sleeve wall. They then extend in the axial direction only over part of the sleeve length. You can then apply either all on one of the two faces of the sleeve or alternately on both faces.
  • the slots can each be formed as a groove in the inner surface and / or the outer surface of the sleeve.
  • the number of turns can also be larger or smaller.
  • the inner winding may have two and the outer winding one and a half turns.
  • the number of turns can also be considerably higher.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Circuit Breakers (AREA)

Claims (14)

  1. Commutateur de puissance à haute tension comprenant un boîtier (10) rempli de gaz isolant, un volume de chauffage (14) pour accueillir un gaz d'extinction comprimé qui, en cas d'interruption d'un courant (I) de petite, moyenne ou forte intensité, est à chaque fois chauffé et mis sous pression par un arc électrique de commutation (S) rotatif, lequel est exposé à une densité de flux magnétique (B) dépendante du courant ; et comprenant deux éléments de commutation (20, 30) pouvant coulisser l'un par rapport à l'autre le long d'un axe (A) et étant disposés dans le boîtier (10), dont l'un (30) présente, dans une disposition coaxiale, un contact d'arc électrique (31), un anneau de passage d'arc électrique (15) et une bobine (C) qui entoure le contact d'arc électrique (31) et qui est reliée électriquement avec l'anneau de passage d'arc électrique (15), laquelle conduit le courant (I) à interrompre, caractérisé en ce que la bobine (C) présente deux enroulements (40, 50) bobinés en sens inverse qui sont disposés de manière concentrique en formant un enroulement intérieur et un enroulement extérieur, et qu'un premier manchon (32) ferromagnétique est prévu dans une disposition coaxiale entre le contact d'arc électrique (31) et l'enroulement intérieur (40).
  2. Commutateur selon la revendication 1, caractérisé en ce que l'enroulement intérieur (40) présente un nombre de spires (42) plus élevé que l'enroulement extérieur (50).
  3. Commutateur selon l'une des revendications 1 ou 2, caractérisé en ce que les surfaces de l'enroulement intérieur (40) et extérieur (50) à l'opposé de l'anneau de passage d'arc électrique (15) sont reliées électriquement entre elles par le biais d'un conducteur électrique (52), que les surfaces de l'enroulement intérieur (40) et extérieur (50) tournées vers l'anneau de passage d'arc électrique (15) présentent respectivement une borne électrique (41, 51) réalisée sous la forme d'un anneau et que la borne électrique (41) de l'enroulement intérieur (40) est reliée électriquement avec l'anneau de passage d'arc électrique (15).
  4. Commutateur selon la revendication 3, caractérisé en ce que le conducteur électrique (52) est réalisé sous la forme d'un anneau et que les surfaces de l'enroulement intérieur (40) et extérieur (50) à l'opposé de l'anneau de passage d'arc électrique (15) s'appuient sur l'anneau.
  5. Commutateur selon la revendication 3, caractérisé en ce que le conducteur électrique (52) est moulé dans l'enroulement extérieur (50) et réalisé sous la forme d'un anneau et qu'une surface de l'enroulement intérieur (40) à l'opposé de l'anneau de passage d'arc électrique (15) s'appuie sur l'anneau.
  6. Commutateur selon l'une des revendications 1 à 5, caractérisé en ce qu'un deuxième manchon (33) ferromagnétique est prévu dans une disposition coaxiale entre l'enroulement intérieur (40) et l'enroulement extérieur (50).
  7. Commutateur selon la revendication 6, caractérisé en ce qu'au moins une fente (321, 331, 42, 53, 55) qui s'étend principalement dans le sens axial et radial est disposée au moins dans le premier (32) ou le deuxième manchon (33) ou dans la borne électrique (41, 51) réalisée en forme d'anneau de l'enroulement intérieur (40) ou de l'enroulement extérieur (50).
  8. Commutateur selon la revendication 7, caractérisé en ce qu'au moins deux fentes (321, 331) réparties régulièrement dans le sens du pourtour sont disposées dans le premier (32) et/ou le deuxième manchon (33).
  9. Commutateur selon l'une des revendications 7 ou 8, caractérisé en ce qu'une première fente (53) est formée dans la borne électrique (51) de l'enroulement extérieur (50) et une deuxième fente (42) est formée dans la borne électrique (41) de l'enroulement intérieur (40).
  10. Commutateur selon la revendication 9, caractérisé en ce que la première (53) ou la deuxième fente (42) s'étendent dans le sens axial au plus loin jusqu'à une spire (54 ou 43) de l'enroulement extérieur (50) ou intérieur (40) qui se raccorde à la borne électrique (51 ou 41) de l'enroulement extérieur (50) ou intérieur (40).
  11. Commutateur selon la revendication 10, caractérisé en ce que la première (53) et la deuxième fente (42) s'étendent dans la même direction dans le sens radial.
  12. Commutateur selon l'une des revendications 10 ou 11, caractérisé en ce qu'une troisième fente (55) est moulée dans le conducteur électrique (52) qui relie électriquement l'enroulement intérieur (40) et extérieur (50).
  13. Commutateur selon la revendication 12, caractérisé en ce que la première (53), la deuxième (42) et la troisième fente (55) s'étendent dans la même direction dans le sens radial.
  14. Commutateur selon la revendication 12, caractérisé en ce qu'au moins deux (53, 55) des trois fentes (42, 53, 55) s'étendent dans des directions différentes dans le sens radial.
EP07821138A 2006-11-07 2007-10-10 Disjoncteur haute tension à arc de coupure tournant Not-in-force EP2087498B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07821138A EP2087498B1 (fr) 2006-11-07 2007-10-10 Disjoncteur haute tension à arc de coupure tournant

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06405471 2006-11-07
PCT/EP2007/060770 WO2008055753A1 (fr) 2006-11-07 2007-10-10 Disjoncteur haute tension à arc de coupure tournant
EP07821138A EP2087498B1 (fr) 2006-11-07 2007-10-10 Disjoncteur haute tension à arc de coupure tournant

Publications (2)

Publication Number Publication Date
EP2087498A1 EP2087498A1 (fr) 2009-08-12
EP2087498B1 true EP2087498B1 (fr) 2010-05-26

Family

ID=37942165

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07821138A Not-in-force EP2087498B1 (fr) 2006-11-07 2007-10-10 Disjoncteur haute tension à arc de coupure tournant

Country Status (5)

Country Link
EP (1) EP2087498B1 (fr)
CN (1) CN101536129A (fr)
AT (1) ATE469431T1 (fr)
DE (1) DE502007003969D1 (fr)
WO (1) WO2008055753A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2056321B1 (fr) * 2007-11-02 2010-05-12 ABB Research Ltd. Commutateur de puissance haute tension doté d'arcs électriques de commutation rotatifs

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50121775A (fr) * 1974-03-14 1975-09-23
US4273977A (en) * 1977-08-31 1981-06-16 Mitsubishi Denki Kabushiki Kaisha Circuit interrupter
DE2809006A1 (de) * 1978-03-02 1979-09-06 Licentia Gmbh Druckgas-leistungsschalter
US4315121A (en) * 1979-05-11 1982-02-09 Gould Inc. Saturable magnetic steel encased coil for arc spinner interrupter
EP0315712A1 (fr) * 1987-11-12 1989-05-17 Ganz Villamossági Müvek Appareil de coupure isolé au gaz SF6 avec un dispositif d'extinction d'arc tournant
DE19507583A1 (de) * 1995-03-04 1996-09-05 Abb Management Ag Leistungsschalter

Also Published As

Publication number Publication date
CN101536129A (zh) 2009-09-16
ATE469431T1 (de) 2010-06-15
DE502007003969D1 (de) 2010-07-08
WO2008055753A1 (fr) 2008-05-15
EP2087498A1 (fr) 2009-08-12

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