WO2008055753A1 - 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
WO2008055753A1
WO2008055753A1 PCT/EP2007/060770 EP2007060770W WO2008055753A1 WO 2008055753 A1 WO2008055753 A1 WO 2008055753A1 EP 2007060770 W EP2007060770 W EP 2007060770W WO 2008055753 A1 WO2008055753 A1 WO 2008055753A1
Authority
WO
WIPO (PCT)
Prior art keywords
winding
arc
switch according
current
ring
Prior art date
Application number
PCT/EP2007/060770
Other languages
German (de)
English (en)
Inventor
Patrick Huguenot
Jochen Kiefer
Thomas Schoenemann
Markus Keller
Zoran Andjelic
Original Assignee
Abb Research Ltd
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 Abb Research Ltd filed Critical Abb Research Ltd
Priority to DE502007003969T priority Critical patent/DE502007003969D1/de
Priority to EP07821138A priority patent/EP2087498B1/fr
Priority to AT07821138T priority patent/ATE469431T1/de
Publication of WO2008055753A1 publication Critical patent/WO2008055753A1/fr

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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 in a
  • Heat volume stored which is connected via a generally annular channel with a switching arc receiving arc zone.
  • a switch of the type mentioned in the introduction 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. In this case formed compressed gas is passed from the arc of arc receiving receiving arc zone in a heating volume.
  • 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.
  • hot compressed gas is formed. Since this gas is fed into the heating volume, it must be made comparatively large and robust, although actually not so much quenching gas is needed for the successful blowing of the switching arc. Therefore, in this switch, the coil is at least partially short-circuited. When large currents are switched, the size of the magnetic field is then reduced by partial or complete short-circuiting of the coil, so that the formation of compressed gas is possibly drastically reduced.
  • the volume of the heating volume can be kept low in manufacturing technology advantageous manner.
  • 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 larger 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.
  • the first and / or second sleeve advantageously at least two uniformly distributed in the direction of access slots are arranged.
  • a first and the current connection of the inner winding only a second slot is formed in the power connection of the outer winding.
  • These two slots are in the axial direction at most up to a subsequent to the power connection of the inner and the outer winding winding of the inner and the Outside winding out.
  • 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.
  • FIG. 1 is a plan view of a guided along an axis A section through a first embodiment of a high-voltage circuit breaker according to the invention, in which the switch is shown on the left of the axis in the on and right of the axis when switched off,
  • FIG. 2 shows a diagram in which the magnetic flux density B [T] generated when switching off the switch according to FIG. 1 and a switch according to the prior art in each case in a switch coil and contributing to the rotation of a switching arc as a function of the strength of the current I to be disconnected [kA] is shown
  • High-voltage circuit breaker according to the invention which is shown cut in the right half along the axis A, 4 is a guided from below in the direction of arrows IV view of the switching piece according to Figure 3, are not shown in the centrally arranged and designed as insulation parts, and
  • FIG. 5 is a view corresponding to FIG. 4 guided view of a contact piece of a third embodiment of the high voltage switch according to the invention, which is slightly modified compared to the embodiment of Figure 4.
  • circuit breaker shown in Figure 1 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
  • the two switching pieces 20 and 30 are not shown rated current contacts in a schematically indicated, low-resistance Nennstrompfad N and with an arcing contact 21 and an arc contact 31, a ferromagnetic sleeve 32 and a cylindrical coil C in one dashed lines shown power current path L, which is guided parallel to the rated current path.
  • the apparent tubular, but possibly also massively designed, arcing contact 21 is guided by acting as an auxiliary nozzle insulating tube 11 and contacted in the on state of the switch (left half of Figure 1) the contact fingers having arcing contact 31.
  • the insulating tube 11 and an am Switching piece 30 held insulating 12 limit an annular heating channel 13, which connects an arc zone, which receives a switching arc S, with a heating volume 14 when you turn off (right half of Figure 1).
  • 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 opposite directions 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.
  • ferromagnetic sleeve 32 and 33 axially aligned slots 321 and 331 are formed. As explained later, these slots serve as well as in the windings 40, 50 formed - only apparent from Figures 3 to 5 - slots 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. Alternatively, both parts can be connected to each other by press fit.
  • 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 not shown in Fig.1.
  • Power current path flows. To turn off the switching piece 20 is guided by a drive, not shown upwards.
  • 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
  • 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. With increasing current strength of the current to be disconnected, this affects
  • 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 sleeve 32 By appropriate selection of the material and the geometric dimensions of these sleeves and by arranging the sleeve 32 between the arcing contact 31 and the inner winding 40, respectively. the sleeve 33 between the inner 40 and the outer winding 50, the magnetic flux density B at the location of the arc runner 15 is considerably increased.
  • the geometric dimension, in particular the wall thickness of the sleeve 32, as large as possible and is used as a material of the sleeve is a ferromagnetic with a small
  • Coercive force such as soft iron or a silicon alloyed iron alloy used. It is thus achieved at low currents already a relatively high magnetic flux density at the location of the arc runner 15.
  • Power terminals 41 and 51 of the inner 40 and the outer winding 50 each formed at least one predominantly axially and radially guided slot. These slots are not apparent from Figure 1, but are also implemented in a corresponding manner in the embodiment of the inventive switch according to Figures 3 and 4 and in the embodiment of Figure 5 and there with the
  • Reference numeral 42 for the power connection 41 and designated by the reference numeral 53 for the power connection 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.
  • they can have the same direction, but can also point radially in different directions and, for example, be arranged opposite one another (FIG. 5).
  • a vortex current suppressing slot 55 is also formed in the inner and the outer winding electrically interconnecting conductor 52 is formed.
  • the three slots 42, 53 and 55 can extend radially in the same direction.
  • at least two of the three slots can also extend radially in different directions (FIG. 5).
  • eddy 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 component of the magnetic flux density B contributing to the arc rotation at the location of the arc runner 15 is at low and partly also medium currents, i. at currents up to about 70 kA, compared to a switch of the same design according to the prior art, but having a coil in the same direction current-carrying coil, increased by about 10 to 20%.
  • 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)

Abstract

L'invention concerne un disjoncteur haute tension comprenant un boîtier (10) rempli de gaz isolant et un volume de chauffage (14) destiné à contenir un gaz d'extinction comprimé. Lors de la coupure d'un courant (I) de faible, moyenne ou forte intensité, le gaz d'extinction est chauffé par un arc de coupure (S) tournant et mis sous pression, cet arc étant exposé à une induction magnétique (B) dépendant du courant. Deux pièces de contact (20, 30) mobiles l'une par rapport à l'autre le long d'un axe (A) sont disposées dans le boîtier (10). L'une (30) de ces pièces de contact présente un contact d'arc (31), une bague d'arc (15) et une bobine (C) entourant le contact d'arc (31), ces éléments étant disposés coaxialement. La bobine (C) est reliée à la bague d'arc (15) de façon électriquement conductrice et achemine le courant (I) à couper. Ladite bobine (C) présente deux enroulements (40, 50) enroulés en sens inverse. Ces enroulements sont conçus et disposés de sorte que, lors de la coupure d'un courant de forte intensité, la composante de l'induction magnétique (B) contribuant à la rotation de l'arc de coupure (S) à l'emplacement de la bague d'arc (15) soit inférieure à la composante obtenue avec un disjoncteur de même conception dans lequel la bobine (C) est enroulée dans le même sens. La taille du volume de chauffage (14) peut ainsi être réduite, ce qui permet d'obtenir un disjoncteur de structure compacte.
PCT/EP2007/060770 2006-11-07 2007-10-10 Disjoncteur haute tension à arc de coupure tournant WO2008055753A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE502007003969T DE502007003969D1 (de) 2006-11-07 2007-10-10 Hochspannungsleistungsschalter mit rotierendem schaltlichtbogen
EP07821138A EP2087498B1 (fr) 2006-11-07 2007-10-10 Disjoncteur haute tension à arc de coupure tournant
AT07821138T ATE469431T1 (de) 2006-11-07 2007-10-10 Hochspannungsleistungsschalter mit rotierendem schaltlichtbogen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06405471 2006-11-07
EP06405471.1 2006-11-07

Publications (1)

Publication Number Publication Date
WO2008055753A1 true WO2008055753A1 (fr) 2008-05-15

Family

ID=37942165

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/060770 WO2008055753A1 (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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009056438A1 (fr) * 2007-11-02 2009-05-07 Abb Research Ltd Disjoncteur haute tension à arc de coupure rotatif

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2511238A1 (de) * 1974-03-14 1975-09-25 Fuji Electric Co Ltd Elektrischer schalter mit ringfoermigen schaltstuecken und einer blasspule
FR2418962A1 (fr) * 1978-03-02 1979-09-28 Licentia Gmbh Disjoncteur a gaz comprime
US4273977A (en) * 1977-08-31 1981-06-16 Mitsubishi Denki Kabushiki Kaisha Circuit interrupter
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
EP0731482A2 (fr) * 1995-03-04 1996-09-11 ABB Management AG Disjoncteur

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2511238A1 (de) * 1974-03-14 1975-09-25 Fuji Electric Co Ltd Elektrischer schalter mit ringfoermigen schaltstuecken und einer blasspule
US4273977A (en) * 1977-08-31 1981-06-16 Mitsubishi Denki Kabushiki Kaisha Circuit interrupter
FR2418962A1 (fr) * 1978-03-02 1979-09-28 Licentia Gmbh Disjoncteur a gaz comprime
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
EP0731482A2 (fr) * 1995-03-04 1996-09-11 ABB Management AG Disjoncteur

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009056438A1 (fr) * 2007-11-02 2009-05-07 Abb Research Ltd Disjoncteur haute tension à arc de coupure rotatif
EP2056321B1 (fr) * 2007-11-02 2010-05-12 ABB Research Ltd. Commutateur de puissance haute tension doté d'arcs électriques de commutation rotatifs

Also Published As

Publication number Publication date
CN101536129A (zh) 2009-09-16
EP2087498B1 (fr) 2010-05-26
ATE469431T1 (de) 2010-06-15
DE502007003969D1 (de) 2010-07-08
EP2087498A1 (fr) 2009-08-12

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