WO2004006345A2 - Structure de bande conductrice bifilaire d'un supraconducteur haute temperature pour limiter le courant - Google Patents

Structure de bande conductrice bifilaire d'un supraconducteur haute temperature pour limiter le courant Download PDF

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Publication number
WO2004006345A2
WO2004006345A2 PCT/DE2003/001882 DE0301882W WO2004006345A2 WO 2004006345 A2 WO2004006345 A2 WO 2004006345A2 DE 0301882 W DE0301882 W DE 0301882W WO 2004006345 A2 WO2004006345 A2 WO 2004006345A2
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WO
WIPO (PCT)
Prior art keywords
conductor
current
current limiter
holding
limiter unit
Prior art date
Application number
PCT/DE2003/001882
Other languages
German (de)
English (en)
Other versions
WO2004006345A3 (fr
Inventor
Ursus KRÜGER
Ralf-Reiner Volkmar
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2004006345A2 publication Critical patent/WO2004006345A2/fr
Publication of WO2004006345A3 publication Critical patent/WO2004006345A3/fr

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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N60/00—Superconducting devices
    • H10N60/30—Devices switchable between superconducting and normal states

Definitions

  • the invention relates to a current limiter unit for the resistive limitation of an electrical current with at least one supporting body made of an insulating material for holding a conductor, which has a superconducting layer, the conductor extending between current connections for supplying and discharging the current and windings in the form of a bifilar conductor structure, so that a current to be limited flows in opposite directions in adjacent turns.
  • Such a current limiter unit is from the
  • the current limiter unit disclosed there has a rod-shaped support body extending in the axial direction, around which a wire-shaped superconductor in the form of a pre-insulated wire is wound.
  • the winding of the superconductor forms a plurality of winding layers which are arranged adjacent to one another in the axial direction.
  • Each winding layer is designed in such a way that the current to be switched flows in opposite directions in current conductor sections which are arranged adjacent to one another in the radial direction.
  • the winding is designed such that a current to be switched flows in opposite directions even in conductor track sections which are arranged in the axial direction in the immediate vicinity of one another.
  • This bifilar winding in the radial as well as in the axial direction is intended to increase the switching speed " e" in a low-inductance design.
  • the known current limiter unit has the disadvantage that the wire-shaped superconductors used have a low current carrying capacity and can only be manufactured by means of complex and therefore costly production processes.
  • the direct winding of the pre-insulated wires makes it difficult for liquid coolant to enter between the windings and thus for the cooling of the superconductor.
  • the current limiter plate disclosed there has a substrate consisting of an insulating material for supporting a composite conductor with an aluminum oxide high-temperature superconducting layer.
  • the interconnector extends between two power connections for connection to an energy distribution network.
  • the current limiter plate also has a plurality of conductor track sections arranged parallel to one another, through which the current to be limited flows in opposite directions. To form a complete current limiter unit, several current limiter plates must be electrically connected to one another.
  • the known current limiter unit can therefore only be manufactured in parts, whereby the manufacturing costs are considerably increased.
  • the object of the invention is to provide a current limiter unit of the type mentioned at the outset, which is inexpensive, enables a continuous production process and has a sufficiently high current carrying capacity, it being possible for sufficient cooling to be provided by a liquid coolant.
  • the invention solves this problem in that the conductor consists of at least one flat conductor strip which is held at a distance from the supporting body from the adjacent turns, so that the entry of a liquid coolant between the turns is made possible.
  • Band-shaped superconducting conductor structures also have a current carrying capacity that is improved by at least an order of magnitude in comparison to wire-shaped superconducting structures, as a result of which, according to the invention, higher currents can be limited, for example in the event of a short circuit.
  • the conductors are held at a distance from one another by the support body. The spaced-apart holder enables a liquid cooling medium to enter between the individual conductors and therefore improves cooling compared to the prior art.
  • a commutation layer made of noble metal on the superconducting layer of the conductor and, in addition, a further insulating layer which is expediently designed with regard to its thermal conductivity.
  • the commutation layer provides a bypass connected in parallel with the superconducting layer, which takes over the current flow in the case of the superconductor quenching.
  • a compact current limiter unit that can be cooled with liquid nitrogen, for example, is provided, which has a high current carrying capacity and, owing to a Continuous manufacturing process for the superconducting
  • the disadvantageous influence of magnetic fields on the quench behavior of the superconducting layer of the composite conductor is largely avoided by the bifilar conductor structure.
  • the opposite direction of current generates opposing magnetic fields, which neutralize each other in their effect and enable the superconductor material to behave independently of the generated magnetic field. Due to the spiral winding, however, a compact arrangement of the superconductor material is provided at the same time.
  • the conductor advantageously consists of a plurality of conductor strips which are electrically connected in parallel to one another and are held at a distance from one another by the support body, so that the entry of a liquid coolant between the conductor strips connected in parallel is made possible. Due to the electrical parallel connection, the current is distributed to the individual bands and is therefore lower in each individual conductor. In total, the maximum permissible current flow through the current limiter unit is thus increased, since the maximum permissible current flow, beyond which irreversible material damage can occur in the conductor, is determined by the material-dependent current carrying capacity of an individual conductor strip. As part of this further development, the application possibilities of the current limiter units are therefore increased by the current distribution on the parallel conduction bands.
  • the spaced arrangement of the individual conductors also allows the entry of a liquid cooling medium to generate the necessary cooling of the composite conductors.
  • the turns extend in layers which are arranged one above the other in an axial direction, a current to be limited flowing in opposite directions in turns which are arranged adjacent to one another in the axial direction.
  • the conductors which are arranged adjacent to one another in the radial direction and therefore lie in one plane have the current to be limited flowing through them in the same direction.
  • the conductors which are arranged adjacent to one another in the radial direction and therefore lie in one plane have the current to be limited flowing through them in the same direction.
  • the supporting body expediently has two holding plates arranged parallel to one another, which have holding grooves provided for receiving the conductor strips.
  • the holding grooves are provided for holding the flat conductor strips in their end regions.
  • the central region of the conductor strips, the length of which corresponds to the spacing of the holding plates, is therefore exposed on both sides, so that a liquid coolant, such as liquid nitrogen, between them the holding plates and the ladder can penetrate.
  • the conductor strip is advantageously a flexible conductor strip.
  • the production of such a conductor strip is described for example in DE 101 42 870.7.
  • the support body has two holding plates which are arranged parallel to one another and are connected to holding pieces arranged for holding the conductor strips.
  • the manufacture of the current limiter unit is simplified, since the flat conductor strips can no longer be carefully fitted into corresponding holding devices of the unwieldy holding plate. Rather, the use of holding pieces into which the conductor strips can be inserted easily improves the manageability of the conductor structures insofar as the holding pieces make mechanical or manual gripping of the conductor strips unnecessary.
  • the holding pieces are inserted, for example, with the conductor strips loosely inserted into the locking openings in the holding plates. The final fixation of the conductor strips can then be brought about by means of a suitable clamping cover of the holding piece.
  • the holding pieces are arranged in rows to one another, the extensions of which intersect at a common center.
  • This center point advantageously coincides with the center point circular holding plates together.
  • Any number of rows of holding pieces can be used within the scope of the invention.
  • the angles spanned between them with respect to the center point expediently vary between 5 and 45 degrees.
  • the invention further solves the problem by a current limiter device with a cryostat filled with liquid nitrogen and at least one current limiter unit according to one of the preceding claims.
  • FIG 1 shows an embodiment of the invention
  • FIG. 2 shows a schematic illustration of an exemplary embodiment of a holding piece
  • FIG. 3 shows a further exemplary embodiment of the current limiter unit according to the invention in a top view
  • FIG. 4 shows a current limiter unit according to FIG. 3 in a side view
  • Figure 5 shows an embodiment of a current limiter device according to the invention and 6 shows the current limiter device according to FIG. 5 in a top view.
  • Figure 1 shows schematically an embodiment of the current limiter unit 1 according to the invention in a plan view.
  • a support body 3 which consists of two parallel plates that would obscure the view of the conductor 2, is only indicated schematically.
  • the conductor 2 extends in a spiral between two power connections 4, which are provided for integrating the current limiter unit 1, for example, into a power distribution network (not shown).
  • the conductor 2 is fastened to a holding plate of the support body 3 by means of holding pieces 6 arranged in a row 5 and extends from the outside to the inside from the power connection 4 arranged on the left in FIG.
  • two hollow cylindrical winding bolts 7 are arranged next to one another, around which the conductor 2 is guided in an S-shape, in order then to be guided spirally from the inside outwards to the power connection 4 arranged on the right in FIG.
  • Figure 2 shows the holding piece 6 and the conductor 2 in an enlarged view.
  • the conductor 2 consists of a plurality of conductor strips 9 running parallel to one another. is composed, which are electrically connected in parallel and whose production is described for example in German patent application 101 42 870.7.
  • Such conductor tapes 9 have, for example, a flexible, textured carrier tape on which a composite conductor consisting of a superconducting layer and a commutation layer is applied.
  • the holding piece 6 shown here consists of a holding part 10, into which holding grooves 11 are introduced, into which the conductor strips 9 are inserted.
  • a clamp part 12 which can be fastened to the holding part 10 by any joining method or by expedient clamping means, not shown, is used to clamp the conductor strips 9 in the holding part 10.
  • a holding bolt (not shown) is also provided on the holding piece 6, with which the holding piece 6 can be locked into locking holes which are provided in the support plate (not shown in FIG. 1).
  • FIG. 3 shows a further exemplary embodiment of the invention in a view according to FIG. 3.
  • the conductor 2 runs in spiral windings 8 from the upper power connection 4 from the outside inwards, but does not become the lower power connection 4 in the same plane returned, but via a coupling piece 13 into the plane of the drawing to a further holding plate which is arranged parallel to the holding plate 3.
  • FIG. 4 shows the current limiter unit in a side view, in which the two holding plates 3 arranged parallel to one another can be clearly seen.
  • the current conducted in the upper holding plate 3 from the outside inwards is conducted via the coupling piece 13 to the conductor 2 of the lower holding plate 3.
  • the current is then carried on the lower holding plate 3 in spiral winches.
  • the spiral windings 8 lie one above the other and are offset from one another in an axial direction, the current being conducted in opposite directions through windings 8 which are arranged axially adjacent to one another, so that in this bifilar conductor structure, too, opposing magnetic fields are generated which neutralize each other in their effect.
  • FIG. 5 shows a current limiter device 14 with a
  • the current limiter device 14 comprises a cryostat 15 which is filled with liquid nitrogen LN. In operation, the current limiter unit 1 is completely immersed in the liquid nitrogen in order to convert the superconducting layer into the superconducting state.
  • a current limiter unit 1 is therefore provided for each phase of the three-phase current, connection leads 16 electrically connected to the current connections 4 being led out of the cryostat 15 via suitable bushings 17.
  • FIG. 6 shows the current limiter device 14 in one

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Containers, Films, And Cooling For Superconductive Devices (AREA)

Abstract

L'invention concerne une unité (1) de limitation de courant pour limiter de manière résistive un courant électrique. Cette unité comprend au moins un support (3), composé de matière isolante et recevant un conducteur (2), ainsi qu'une couche supraconductrice. Le conducteur (2), qui s'étend entre des raccordements électriques (4) pour amener et évacuer le courant, constitue des spires (8) en forme de structure conductrice bifilaire, le courant à limiter passant en sens inverse dans des spires (8) voisines. L'invention vise à créer une unité peu onéreuse, qui peut être fabriquée en continu et qui dispose d'une charge électrique suffisante, un refroidissement performant étant apporté par un agent de refroidissement liquide. A cet effet, le conducteur (2) comprend au moins une bande conductrice (9) plate, disposée sur le support (3) à une certaine distance des spires (8) voisines, de façon à permettre la pénétration d'un agent de refroidissement liquide entre les spires (8).
PCT/DE2003/001882 2002-07-03 2003-06-02 Structure de bande conductrice bifilaire d'un supraconducteur haute temperature pour limiter le courant WO2004006345A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10230618A DE10230618A1 (de) 2002-07-03 2002-07-03 Bifilare Bandleiterstruktur eines Hochtemperatursupraleiters zur Strombegrenzung
DE10230618.4 2002-07-03

Publications (2)

Publication Number Publication Date
WO2004006345A2 true WO2004006345A2 (fr) 2004-01-15
WO2004006345A3 WO2004006345A3 (fr) 2004-05-06

Family

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PCT/DE2003/001882 WO2004006345A2 (fr) 2002-07-03 2003-06-02 Structure de bande conductrice bifilaire d'un supraconducteur haute temperature pour limiter le courant

Country Status (2)

Country Link
DE (1) DE10230618A1 (fr)
WO (1) WO2004006345A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1830419A1 (fr) * 2006-03-02 2007-09-05 Theva Dünnschichttechnik GmbH Limiteur de courant résistant
WO2008006689A1 (fr) * 2006-07-14 2008-01-17 Siemens Aktiengesellschaft Dispositif supraconducteur résistif limiteur de courant avec bobinage bifilaire en conducteurs plats hts et écarteur de spire
WO2008009537A1 (fr) * 2006-07-17 2008-01-24 Siemens Aktiengesellschaft Dispositif limiteur de courant supraconducteur du type résistif avec élément d'arrêt
CN102592774A (zh) * 2012-03-06 2012-07-18 中国科学院电工研究所 一种高温超导无感线圈间隔层

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004031908B3 (de) 2004-06-24 2006-01-05 Siemens Ag Strombegrenzungseinrichtung mit supraleitendem Schaltelement
DE102004048646B4 (de) * 2004-10-04 2006-08-10 Siemens Ag Supraleitende Strombegrenzereinrichtung vom resistiven Typ mit bandförmiger Hoch-Tc-Supraleiterbahn
ES2559610T3 (es) 2013-09-03 2016-02-15 Nexans Disposición de bobina superconductora
DE102016206573A1 (de) * 2016-04-19 2017-10-19 Siemens Aktiengesellschaft Elektrische Spulenwicklung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3720847A (en) * 1968-03-12 1973-03-13 Siemens Ag Power current cryotron with flat gate conductor
DE4107686A1 (de) * 1991-03-09 1992-09-10 Abb Patent Gmbh Verfahren zur herstellung eines supraleitenden strombegrenzers sowie ein entsprechend hergestellter strombegrenzer
DE4107685A1 (de) * 1991-03-09 1992-09-10 Abb Patent Gmbh Supraleitender strombegrenzer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19720397A1 (de) * 1997-05-15 1999-04-01 Magnet Motor Gmbh Supraleitender Hochstromschalter
DE19827227A1 (de) * 1998-06-18 1999-12-23 Siemens Ag Strombegrenzungseinrichtung mit Leiterbahnanordnung aus Hoch-T¶c¶-Supraleitermaterial sowie Verfahren zur Herstellung der Einrichtung
DE10142870B4 (de) * 2001-08-27 2006-06-08 Siemens Ag Verfahren zum Erzeugen einer fortlaufenden Leiterbahnstruktur aus einem hochtemperatur-supraleitendem Werkstoff auf einem Träger und Vorrichtung zum Durchführen des Verfahrens

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3720847A (en) * 1968-03-12 1973-03-13 Siemens Ag Power current cryotron with flat gate conductor
DE4107686A1 (de) * 1991-03-09 1992-09-10 Abb Patent Gmbh Verfahren zur herstellung eines supraleitenden strombegrenzers sowie ein entsprechend hergestellter strombegrenzer
DE4107685A1 (de) * 1991-03-09 1992-09-10 Abb Patent Gmbh Supraleitender strombegrenzer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1830419A1 (fr) * 2006-03-02 2007-09-05 Theva Dünnschichttechnik GmbH Limiteur de courant résistant
JP2007294922A (ja) * 2006-03-02 2007-11-08 Theva Duennschichttechnik Gmbh 抵抗型限流器
WO2008006689A1 (fr) * 2006-07-14 2008-01-17 Siemens Aktiengesellschaft Dispositif supraconducteur résistif limiteur de courant avec bobinage bifilaire en conducteurs plats hts et écarteur de spire
US8255024B2 (en) 2006-07-14 2012-08-28 Siemens Aktiengesellschaft Resistive superconducting current-limiter device with bifilar coil winding composed of HTS ribbon conductors and turn separator
WO2008009537A1 (fr) * 2006-07-17 2008-01-24 Siemens Aktiengesellschaft Dispositif limiteur de courant supraconducteur du type résistif avec élément d'arrêt
US8112134B2 (en) * 2006-07-17 2012-02-07 Siemens Aktiengesellschaft Superconducting current limiter device of the resistive type having a holding element
KR101372396B1 (ko) * 2006-07-17 2014-03-07 지멘스 악티엔게젤샤프트 홀딩 엘리먼트를 가진 저항성 타입의 초전도성 전류 제한 장치
CN102592774A (zh) * 2012-03-06 2012-07-18 中国科学院电工研究所 一种高温超导无感线圈间隔层

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Publication number Publication date
DE10230618A1 (de) 2004-01-29
WO2004006345A3 (fr) 2004-05-06

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