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WO1999029006A1 - Limiteur de fuites a la terre - Google Patents

Limiteur de fuites a la terre Download PDF

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Publication number
WO1999029006A1
WO1999029006A1 PCT/EP1998/007741 EP9807741W WO9929006A1 WO 1999029006 A1 WO1999029006 A1 WO 1999029006A1 EP 9807741 W EP9807741 W EP 9807741W WO 9929006 A1 WO9929006 A1 WO 9929006A1
Authority
WO
WIPO (PCT)
Prior art keywords
fault current
current limiter
limiter according
superconductor
semiconducting
Prior art date
Application number
PCT/EP1998/007741
Other languages
English (en)
Inventor
Jan Brangefält
Udo Fromm
Christian Sasse
Thorsten Schütte
Original Assignee
Abb Ab
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 Ab filed Critical Abb Ab
Priority to AU22674/99A priority Critical patent/AU2267499A/en
Priority to DE19882840T priority patent/DE19882840T1/de
Priority to JP2000523730A priority patent/JP2001525650A/ja
Publication of WO1999029006A1 publication Critical patent/WO1999029006A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F6/00—Superconducting magnets; Superconducting coils
    • H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B12/00—Superconductive or hyperconductive conductors, cables, or transmission lines
    • H01B12/16—Superconductive or hyperconductive conductors, cables, or transmission lines characterised by cooling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • H02H9/023—Current limitation using superconducting elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F6/00—Superconducting magnets; Superconducting coils
    • H01F2006/001—Constructive details of inductive current limiters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment

Definitions

  • This invention relates to a fault current limiter for a power system having an electrical current carrying path, the fault current limiter being of the kind comprising a superconducting device, for disposition in the current carrying path, which has superconductor means exhibiting superconducting properties, electrically insulating means surrounding the superconductor means and cooling means for cryogenically cooling the superconductor means below its critical temperature in use of the fault current limiter.
  • the invention also relates to a power system incorporating such a fault current limiter and capable of operating at high voltages, e.g. such as 400 to 800 kV or higher.
  • Superconducting fault current limiters of the kind referred to are already known and operate by the superconductor means passing from a superconducting state to a non- superconducting state on the occurrence of a fault in the power system. Normally a resistor or inductive coil is connected in parallel with the superconducting device and the current is commutated to the resistor or coil when the superconductor means switches to the non-superconducting state.
  • the electrically insulating means of a fault current limiter of the kind referred to needs to have high electrical breakdown strength. Conventional insulating means comprising paper/oil or polypropylene/paper/oil tends, however, to deteriorate under high voltage. It also is liable to suffer from partial discharges due to its structure. Therefore the long-term reliability of known superconducting fault current limiters is determined by the electrical insulation. Summary of t e: Invention
  • An aim of the present invention is to provide a superconductir.g fault current limiter having an improved electrical insulation system.
  • a fault current limiter of the kind referred to is characterised in that the electrically insulating means comprises solid material within which the electric field is confined in use of the fault current limiter.
  • a fault current limiter of the kind referred to is characterised in that the electrically insulating means comprises an inner layer of semiconducting material in electrical contact with said superconductor means, an outer layer of semiconducting material at a controlled electrical potential along its length and an intermediate layer of electrically insulating material between the said inner and outer layers .
  • the term "semiconducting material” means a material which has a considerably lower conductivity than an electric conductor but which does not have such a low conductivity that it is an electrical insulator.
  • the semiconducting material should have resistivity of from 1 to 10 5 ohm- cm, preferably from 10 to 500 ohm- cm and most preferably from 10 to 100 ohm- cm, typically 20 ohm- cm.
  • the electrically insulating means is suitably of unitary form with the layers either in close mechanical contact or, more preferably, joined together, e.g. bonded by extrusion.
  • Che layers are preferably formed of plastics material haviug resilient or elastic properties at least at ambient temperatures. This allows the cable forming the winding to be flexed or shaped into a desired form if desired.
  • thermal and electric loads within the insulation are reduced.
  • the insulating intermediate layer and the semiconducting inner and outer layers should have at least substantially the same coefficients of thermal expansion (a) so that defects caused by different the.rmal expansions when the layers are subjected to heating or cooling will not arise. Ideally the layers will be extruded together around the superconductor means .
  • the electrically insulating intermediate layer comprises solid thermoplastics material, such as low density polyethylene (LDPE) , high density polyethylene (HDPE) , polypropylene (PP) , cross-linked materials, such as cross-linked polyethylene (XLPE) , or rubber insulation, such as ethylene propylene rubber (EPR) , ethylene-propylene-diene monomer (EPDM) or silicone rubber.
  • the semiconducting inner and outer layers may comprise similar material to the intermediate layer but with conducting particles, such as particles of carbon black or metallic particles, embedded therein.
  • conducting particles such as particles of carbon black or metallic particles, embedded therein.
  • a particular insulating material, such as EPR has similar mechanical properties when containing no, or some, carbon particles.
  • the screens of semiconducting inner and outer layers form substantially equipotential surfaces on the inside and outside of the insulating intermediate layer so that the electric field is confined between the inner and outer layers in the intermediate layer.
  • the electric field is substantially radial and confined within the intermediate layer.
  • the semiconducting inner layer is arranged to be in electrical contact with, and to be at the same potential as, the superconductor means which it surrounds.
  • the semiconducting outer layer is designed to act as a screen to prevent losses caused by induced voltages. Induced voltages in the outer layer could be reduced by increasing the resistance of the outer layer.
  • the resistance can be increased by reducing the thickness of the outer layer but the thickness cannot be reduced below a certain minimum thickness.
  • the resistance can also be increased by selecting a material for the layer having a higher resistivity.
  • the resistivity of the semiconducting outer layer is too great, the voltage potential midway between adjacent spaced apart points at a controlled, e.g. earth, potential will become sufficiently high as to risk the occurrence of corona discharge in the insulation with consequent erosion of the insulating and semiconducting layers.
  • the semiconducting outer layer is therefore a compromise between a conductor having low resistance and high induced voltage losses but which is easily connected to a controlled potential, typically earth or ground potential, and an insulator which has high resistance with low induced voltage losses but which needs to be connected to the controlled potential along its length.
  • the resistivity p s of the semiconducting outer layer should be within the range P m __ ⁇ P s ⁇ P a&x ' where p ⁇ . is dete.rmined by pe.rmissible power loss caused by eddy current losses and resistive losses caused by voltages induced by magnetic flux and pm. x is determined by the requirement for no corona or glow discharge.
  • the superconducting device may comprise a transmission cable having an outer conductive shield or protective sheath, e.g. of lead.
  • the superconducting device may comprise a coil.
  • the semiconducting outer layer is earthed, or connected to some other controlled potential, at spaced apart intervals along its length, there is no need for an outer metal shield and protective sheath to surround the semiconducting outer layer. The diameter of the cable is thus reduced allowing more turns to be provided for a given size of coil.
  • the fault current limiter includes an impedance in parallel with the superconducting device.
  • the impedance may comprise a resistive device (in which case the current limiter is a resistive fault current limiter) or an inductive coil (in which case the current limiter is an inductive fault current limiter) .
  • the resistance of the resistive device is dimensioned so that, under normal operating conditions, its resistance is large compared with that of the superconductor means but, under fault conditions, its resistance is small compared with that of the superconductor means.
  • the equivalent ohmic resistance (frequency x inductance) of the inductive coil is large under normal operating conditions but small under fault conditions compared with that of the superconductor means.
  • the cooling means may comprise insulated container means, e.g. a cryostat, through which cryogenic fluid, e.g. liquid nitrogen, is passed and in which the superconducting device is contained.
  • cryogenic fluid e.g. liquid nitrogen
  • the inductive coil may have solid electrical insulation similar to that of the electrically insulating means, in which case the inductive coil may also be included in the insulated container means.
  • the cooling means may comprise part of the superconductor means.
  • the superconductor means may comprise a support tube through which cryogenic coolant fluid is passed and on which elongate superconducting means is wound.
  • the superconductor means may comprise low temperature semiconducting materials, but most preferably comprises high-temperature superconducting (HTS) materials, for example elongate HTS means, such as HTS wires or tape, helically wound on an inner tube.
  • HTS wire or tape conveniently comprises silver-sheathed BSCCO-2212 or BSCCO-
  • BSCCO wire(s) or tape(s) are made by encasing fine filaments of the oxide superconductor in a silver or silver oxide matrix by a powder-in- tube (PIT) draw, roll, sinter and roll process. Alternatively the tapes may be formed by a surface coating process. In either case the oxide is melted and resolidified as a final process step.
  • PIT powder-in- tube
  • HTS tapes such as TiBaCaCuO (TBCCO-1223) and YBaCuO (YBCO-123) have been made by various surface coating or surface deposition techniques.
  • an HTS wire or tape should have a current density beyond j c ⁇ 10 5 Acm "2 at operation temperatures from 65 K, but preferably above 77 K.
  • the filling factor of HTS material in the matrix needs to be high so that the engineering current density j e 10 4 Acm "2 . j c should not drastically decrease with applied field within the Tesla range.
  • the helically wound HTS wire or tape is cooled to below the critical temperature T c of the HTS material by a cooling fluid, preferably liquid nitrogen, passing through the inner support tube.
  • the cooling means may comprise the insulated container means referred to above.
  • a power system having an electrical current carrying path in which there is connected in series a circuit breaker and a fault current limiter according to said other aspects of the invention.
  • Figure 1 is a circuit diagram illustrating a power system incorporating one embodiment of a fault current limiter according to the invention
  • Figure 2 is a circuit diagram illustrating a power system incorporating another embodiment of a fault current limiter according to the invention.
  • Figure 3 is a schematic sectional view of part of a superconducting device of a fault current limiter according to the invention.
  • Figure 1 shows part of a power utility system 1 comprising a high voltage source 2, an electrical current carrying path 3 and, arranged in series in the current carrying path 3, a superconducting resistive fault current limiter, generally designated 4, and a circuit breaker 5.
  • the fault current limiter 4 comprises a superconducting device 6 and, arranged in parallel therewith, a resistor 7.
  • the superconducting device 6 is contained in a thermally insulated container 12 (see dashed lines in Figure 1), e.g. a cryostat, cooled by a cryogenic fluid, e.g. liquid nitrogen.
  • the superconducting device 6 may comprise a coil (not shown) wound from a cable 8 (see Figure 3) comprising elongate inner superconducting means 10 having an inner metal, e.g. copper or highly resistive metal or alloy, support tube 21 and an HTS wire 22, e.g. of BSCCO wire, wound helically around the tube 21 and embedded in a layer 23 of semiconducting plastics material. Electrical insulation 9 is arranged outwardly of, at a small radial spacing 24 from, the layer 23. This electrical insulation 9 is substantially void- free and comprises an inner semiconducting layer 25, an outer semiconducting layer 26 and, sandwiched between these semiconducting layers, an insulating layer 27.
  • a coil not shown wound from a cable 8 (see Figure 3) comprising elongate inner superconducting means 10 having an inner metal, e.g. copper or highly resistive metal or alloy, support tube 21 and an HTS wire 22, e.g. of BSCCO wire, wound helically around
  • the layers 25-27 preferably comprise thermoplastics materials solidly connected to each other at their interfaces.
  • these thermoplastics materials have similar coefficients of thermal expansion (a) and are preferably extruded together around the inner superconducting means 3.
  • the layers 25-27 are extruded together to provide a monolithic structure so as to minimise the risk of cavities and pores at the interfaces of the electrical insulation. The presence of such pores and cavities in the insulation and at its interfaces is undesirable since it gives rise to corona discharge in the electrical insulation at high electric field strengths.
  • the outer semiconducting layer 26 is connected at spaced apart regions along its length to a controlled potential, e.g. earth or ground potential, the specific spacing apart of adjacent earthing points being dependent on the resistivity of the layer 26.
  • a controlled potential e.g. earth or ground potential
  • the semiconducting layer 26 acts as a static shield and as an earthed outer layer which ensures that the electric field of the superconducting cable is retained within the solid insulation between the semiconducting layers 25 and 26. Losses caused by induced voltages in the layer 26 are reduced by increasing the resistance of the layer 26. However, since the layer 26 must be at least of a certain minimum thickness, e.g. no less than 0.8 mm, the resistance can only be increased by selecting the material of the layer to have a relatively high resistivity. The resistivity cannot be increased too much, however, else the voltage of the layer 26 mid-way between two adjacent earthing points will be too high with the associated risk of corona discharges occurring.
  • the radial spacing 24 provides an expansion/contraction gap to compensate for the differences in the thermal coefficients of expansion ( ) between the electrical insulation 9 and the inner superconducting means 10 (including the metal tube 21) .
  • the spacing 24 may be a void space or may incorporate a foamed, highly compressible material to absorb any relative movement between the superconductor and insulation system.
  • the foamed material if provided, may be semiconducting to ensure electrical contact between the layers 23 and 25. Additionally or alternatively, metal wires may be provided for ensuring the necessary electrical contact between the layers 23 and 25.
  • the solid insulating layer 27 may comprise cross-linked polyethylene (XLPE) .
  • the solid insulating layer may comprise other cross-linked materials, low density polyethylene (LDPE) , high density polyethylene (HDPE) , polypropylene (PP) , polybutylene (PB) , polymethylpentene (PMP) , ethylene (ethyl) acrylate copolymer, or rubber insulation, such as ethylene propylene rubber (EPR) , ethylene-propylene-diene monomer (EPDM) or silicone rubber.
  • LDPE low density polyethylene
  • HDPE high density polyethylene
  • PP polypropylene
  • PB polybutylene
  • PMP polymethylpentene
  • EPR ethylene propylene rubber
  • EPDM ethylene-propylene-diene monomer
  • the semiconducting material of the layer 23 and of the inner and outer layers 25 and 26 may comprise, for example, a base polymer of the same material as the solid insulating layer 27 and highly electrically conductive particles, e.g. particles of carbon black or metallic particles, embedded in the base polymer.
  • the volume resistivity, typically 20 ohm- cm, of these semiconducting layers may be adjusted as required by varying the type and proportion of carbon black added to the base polymer. The following gives examples of how volume resistivity can be varied using different types and quantities of carbon black.
  • the superconducting device 6 may comprise a transmission cable (not shown) instead of a coil. If the device is a transmission cable, an outer electrically conductive shield and protective sheath, e.g. of lead, is suitably provided around the outer layer 26 of semiconducting material.
  • the HTS wire 22 Under quiescent operating conditions of the utility system 1, the HTS wire 22, cooled to below its critical temperature by the liquid nitrogen in the container 12, is in its superconducting state and current passes along the wire with virtually no losses. No current flows through the resistor 7 because of the virtually zero resistance path provided by the HTS wire in its superconducting state.
  • the critical current density J c of the HTS wire changes so that the wire becomes non-superconducting and becomes a series resistor having a large resistance compared with the much smaller relative resistance of the resistor 7.
  • the circuit breaker 5 opens on occurrence of the fault.
  • FIG. 2 shows an alternative power utility system 40.
  • the same reference numerals have been used in Figures 1 and 2 to identify the same or similar features.
  • the main differences of the two systems are that in system 40, a superconducting inductive fault current limiter 41 is provided.
  • the fault current limiter 41 has a superconducting device 6 arranged in parallel with an inductive coil 42 (instead of the resistor 7 of system 1) which may or may not, include a core (not shown) .
  • the coil instead of the resistor 7 of system 1
  • the thermally insulated container may contain only the conducting device 6 (as indicated by dashed line 12) or may contain both the conducting device 6 and the coil 42 (as indicated by dashed line 44) .
  • the current through the HTS wire 2 is commutated to the inductive coil 42.
  • the coil 42 is dimensioned so that its equivalent ohmic resistance (frequency x inductance) is large compared to that of the, HTS wire 2 when the latter is superconducting but is small compared to that of the HTS wire 2 under fault conditions when the latter is non-superconducting.
  • the electrically insulating means of a fault current limiter according to the invention is intended to be able to handle very high voltages and the consequent electric and thermal loads which may arise at these voltages.
  • a fault current limiter according to the invention may be designed for a rated power of a few hundred kNA up to more than 1000 MVA and with a rated voltage ranging from 3-4 kV up to very high transmission voltages of 400-800 kV.
  • PD partial discharges, or PD, constitute a serious problem for known insulation systems.
  • the electric load on the electrical insulation surrounding the superconductor means is reduced by ensuring that the inner layer of the insulation is at substantially the same electric potential as the inner superconductor means and the outer layer of the insulation is at a controlled, e.g. earth, potential.
  • the electric field in the intermediate layer of insulating material between the inner and outer layers is distributed substantially uniformly over the thickness of the intermediate layer.
  • the fault current limiter can thus be designed to withstand very high operating voltages, typically up to 800 kV or higher.
  • the electrically insulating means should be extruded in position, it is possible to build up an electrical insulation system from tightly wound, overlapping layers of film or sheet-like material. Both the semiconducting layers and the electrically insulating layer can be formed in this manner.
  • An insulation system can be made of an all-synthetic film with inner and outer semiconducting layers or portions made of polymeric thin film of, for example, PP, PET, LDPE or HDPE with embedded conducting particles, such as carbon black or metallic particles and with an insulating layer or portion between the semiconducting layers or portions.
  • a dry, wound multilayer thin film insulation has also good thermal properties and can be combined with a superconducting pipe as an electric conductor and have coolant, such as liquid nitrogen, pumped through the pipe.
  • an electrical insulation system is similar to a conventional cellulose based cable, where a thin cellulose based or synthetic paper or non-woven material is lap wound around a conductor.
  • the semiconducting layers on either side of an insulating layer, can be made of cellulose paper or non-woven material made from fibres of insulating material and with conducting particles embedded.
  • the insulating layer can be made from the same base material or another material can be used.
  • an insulation system is obtained by combining film and fibrous insulating material, either as a laminate or as co- lapped.
  • This insulation system is the commercially available so-called paper polypropylene laminate, PPLP, but several other combinations of film and fibrous parts are possible. In these systems various impregnations such as mineral oil or liquid nitrogen can be used.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Abstract

L'invention concerne un limiteur (4) de fuites à la terre destiné à un système électrique ayant un chemin (3) porteur de courant électrique, lequel limiteur comprend: un supraconducteur (6), destiné à être disposé dans le chemin (3) porteur de courant, supraconducteur qui présente des propriétés de supraconduction; une isolation (9) électrique monobloc entourant le supraconducteur en vue du confinement du champ électrique et un dispositif (12) de refroidissement destiné à refroidir le supraconducteur par cryogénie à une température inférieure à sa température critique lors de l'utilisation du limiteur (4) de fuites à la terre.
PCT/EP1998/007741 1997-11-28 1998-11-30 Limiteur de fuites a la terre WO1999029006A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU22674/99A AU2267499A (en) 1997-11-28 1998-11-30 A fault current limiter
DE19882840T DE19882840T1 (de) 1997-11-28 1998-11-30 Fehlerstrombegrenzer
JP2000523730A JP2001525650A (ja) 1997-11-28 1998-11-30 障害電流制限器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9725319A GB2332558A (en) 1997-11-28 1997-11-28 A fault current limiter
GB9725319.9 1997-11-28

Publications (1)

Publication Number Publication Date
WO1999029006A1 true WO1999029006A1 (fr) 1999-06-10

Family

ID=10822866

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/007741 WO1999029006A1 (fr) 1997-11-28 1998-11-30 Limiteur de fuites a la terre

Country Status (5)

Country Link
JP (1) JP2001525650A (fr)
AU (1) AU2267499A (fr)
DE (1) DE19882840T1 (fr)
GB (1) GB2332558A (fr)
WO (1) WO1999029006A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008121430A3 (fr) * 2007-02-09 2008-11-27 American Superconductor Corp Dispositif hts fcl connecté en parallèle
US7724482B2 (en) 2007-02-09 2010-05-25 American Superconductor Corporation Parallel HTS transformer device
JP2010518803A (ja) * 2007-02-09 2010-05-27 アメリカン スーパーコンダクター コーポレーション 並列接続ｈｔｓｆｃｌデバイス
CN109818342A (zh) * 2019-03-18 2019-05-28 广东电网有限责任公司 一种具有复合绝缘结构的超导限流器

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE387743T1 (de) 2003-10-15 2008-03-15 Nexans Supraleitender strombegrenzer mit magnetfeldunterstütztem quench
GB0411035D0 (en) * 2004-05-18 2004-06-23 Diboride Conductors Ltd Croygen-free dry superconducting fault current limiter
US20060122067A1 (en) * 2004-10-26 2006-06-08 Holcomb Matthew J Fault current limiting system
JP4665034B2 (ja) * 2005-07-29 2011-04-06 アメリカン スーパーコンダクター コーポレイション Ｈｔｓ電力ケーブルの故障管理方法及びシステム
US20090067101A1 (en) * 2007-09-06 2009-03-12 Siemens Power Generation, Inc. Method and System for Limiting a Current in an Alternating Current Generator
US8611056B2 (en) 2011-03-14 2013-12-17 Varian Semiconductor Equipment Associates Inc. Superconducting fault current limiter

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US4039740A (en) * 1974-06-19 1977-08-02 The Furukawa Electric Co., Ltd. Cryogenic power cable
US4687882A (en) * 1986-04-28 1987-08-18 Stone Gregory C Surge attenuating cable
EP0620570A1 (fr) * 1993-03-26 1994-10-19 Ngk Insulators, Ltd. Dispositif supraconducteur pour limiter le courant de défaut

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AT272436B (de) * 1967-04-10 1969-07-10 Peter Dipl Ing Dr Techn Klaudy Verfahren zum Überlastschutz unter Verwendung von Supraleitern
GB2140195B (en) * 1982-12-03 1986-04-30 Electric Power Res Inst Cryogenic cable and method of making same
ATE150204T1 (de) * 1992-11-05 1997-03-15 Gec Alsthom T & D Sa Supraleitende wicklung, insbesondere für strombegrenzer und strombegrenzer mit einer solchen wicklung

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
US4039740A (en) * 1974-06-19 1977-08-02 The Furukawa Electric Co., Ltd. Cryogenic power cable
US4687882A (en) * 1986-04-28 1987-08-18 Stone Gregory C Surge attenuating cable
EP0620570A1 (fr) * 1993-03-26 1994-10-19 Ngk Insulators, Ltd. Dispositif supraconducteur pour limiter le courant de défaut

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008121430A3 (fr) * 2007-02-09 2008-11-27 American Superconductor Corp Dispositif hts fcl connecté en parallèle
US7724482B2 (en) 2007-02-09 2010-05-25 American Superconductor Corporation Parallel HTS transformer device
JP2010518803A (ja) * 2007-02-09 2010-05-27 アメリカン スーパーコンダクター コーポレーション 並列接続ｈｔｓｆｃｌデバイス
US7902461B2 (en) 2007-02-09 2011-03-08 American Superconductor Corporation Fault current limiting HTS cable and method of configuring same
AU2008233061B2 (en) * 2007-02-09 2011-09-22 American Superconductor Corporation Parallel connected HTS FCL device
KR101142124B1 (ko) * 2007-02-09 2012-05-09 아메리칸 수퍼컨덕터 코포레이션 병렬 연결된 ｈｔｓ ｆｃｌ 장비
CN101675566B (zh) * 2007-02-09 2013-04-03 美国超导公司 并联高温超导故障限流器装置
US8532725B2 (en) 2007-02-09 2013-09-10 American Superconductor Corporation Parallel connected HTS utility device and method of using same
US8886267B2 (en) 2007-02-09 2014-11-11 American Superconductor Corporation Fault current limiting HTS cable and method of configuring same
CN109818342A (zh) * 2019-03-18 2019-05-28 广东电网有限责任公司 一种具有复合绝缘结构的超导限流器
CN109818342B (zh) * 2019-03-18 2024-01-23 广东电网有限责任公司 一种具有复合绝缘结构的超导限流器

Also Published As

Publication number Publication date
GB9725319D0 (en) 1998-01-28
AU2267499A (en) 1999-06-16
GB2332558A (en) 1999-06-23
DE19882840T1 (de) 2001-03-08
JP2001525650A (ja) 2001-12-11

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