WO2000070631A2 - Procede de protection contre les surintensites dans un cable supraconducteur, et cable supraconducteur - Google Patents

Procede de protection contre les surintensites dans un cable supraconducteur, et cable supraconducteur Download PDF

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Publication number
WO2000070631A2
WO2000070631A2 PCT/DK2000/000227 DK0000227W WO0070631A2 WO 2000070631 A2 WO2000070631 A2 WO 2000070631A2 DK 0000227 W DK0000227 W DK 0000227W WO 0070631 A2 WO0070631 A2 WO 0070631A2
Authority
WO
WIPO (PCT)
Prior art keywords
cable
superconducting
current
superconducting cable
current detector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/DK2000/000227
Other languages
English (en)
Other versions
WO2000070631A3 (fr
Inventor
Claus Nygaard Rasmussen
Jørgen Nygård NIELSEN
Jens Jacob ØSTERGAARD
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.)
NKT Research Center AS
Original Assignee
NKT Research Center AS
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 NKT Research Center AS filed Critical NKT Research Center AS
Priority to AU42865/00A priority Critical patent/AU4286500A/en
Priority to EP00922477A priority patent/EP1185993A1/fr
Priority to JP2000618993A priority patent/JP2003500985A/ja
Publication of WO2000070631A2 publication Critical patent/WO2000070631A2/fr
Publication of WO2000070631A3 publication Critical patent/WO2000070631A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/001—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for superconducting apparatus, e.g. coils, lines, machines
    • 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

  • the invention relates to a method for overcurrent protection in a superconducting cable.
  • the invention relates to a superconducting cable.
  • a typical requirement for a superconducting cable is that it should be protected from overcurrents.
  • This protection requirement may e.g. be that the cable should be able to withstand approximately 40 kA for 1 second.
  • the object of the invention is now to provide a method for protecting a superconducting cable, accommodating the requirements stipulated above.
  • the objective of the invention is fulfilled by a method of the type defined in the preamble of claim 1 , the method being characterized in that a current detector, which can be constituted by a part of or all of the cable, is inserted in series with the cable conductor of the superconducting cable.
  • an electrical conductor is preferably inserted, as indicated in claim 5, in parallel with the cable conductor of the cable and the current detector, said electrical conductor having a higher impedance than the superconducting cable when in its superconducting state.
  • the invention also relates to a superconducting cable.
  • This cable is of the type defined in the preamble of claim 9 and is characterised in that the cable conductor of the cable is connected in series with a current detector for detecting overcurrents and a circuit breaker or a current limiter.
  • Fig. 1 shows a basic construction of a superconducting cable with overcurrent protection according to the invention
  • Fig. 2 shows a more detailed construction of an embodiment of the cable with over- current protection according to the invention
  • Fig. 3 shows the relationship with respect to time between currents flowing in the cable according to Fig. 2 in an overcurrent situation
  • Fig. 4 shows in perspective and partially intersected a superconducting cable with overcurrent protection according to the invention.
  • a superconducting cable is denoted by 1 , said superconducting cable possibly, as known in the art, being constructed of a core, around which one or more layers of superconducting tapes is/are wound.
  • Current detectors 3, 4 are coupled to the ends of the cable, the current detectors having built-in circuit breakers or current limiters.
  • the current detectors may e.g. comprise superconducting pieces such as YBCO or Bi 2212 with built-in circuit breakers, and may be dimensioned such that they quench at a lower current than the superconductor of the actual cable, implying that if the current in the superconducting pieces exceeds a certain value, then the current to the superconducting cable will be broken after a short period of time.
  • current limiters By use of current limiters, the current will naturally be limited.
  • a hot shunt is coupled in parallel with a series connection of the superconducting pieces and the cable conductors of the superconducting cable, said shunt being capable of diverting the current supplied for a short period of time if the current detectors break the current or the current limiter limits the current.
  • Fig. 2 shows a more detailed embodiment of the superconducting cable according to the invention.
  • 13 denotes current detectors corresponding to those denoted by 3 and
  • the reference number 7 denotes a superconducting cable corresponding to the ca- ble 1 of Fig. 1.
  • a cold shunt is provided in parallel with the cable conductors of the cable, the shunt being denoted by the reference number 11. This shunt is cooled to the temperature of the superconductor.
  • On the outside of this cold shunt is a cry- ostat 8, and on the outside thereof is an electrical insulation 9.
  • an electrical conductor 10 is provided, which is made e.g. of copper and serves as a hot shunt at ambient temperature, cf. below.
  • the operation of the current detector in the superconducting cable will now be explained in greater detail with reference to the current plot of Fig. 3.
  • the current will be fed to the hot shunt 10, wherein the current will increase steeply as indicated by the broken line in Fig. 3 at the time 0.1s. At the same time, the current in the cold shunt 1 1 will decrease steeply.
  • Fig. 4 shows in perspective and partially intersected a superconducting cable as occurring in actual practice, which can be used in connection with the current protection as explained in connection with the preceding figures.
  • 12 denotes a shield on the outside of which is a jacket 14.
  • a dielectric insulator 15 surrounding an outer steel tube 16.
  • spacers 17 are arranged that are supported by an aluminium foil 18 abutting an inner steel tube 19.
  • an aluminium foil 18 abutting an inner steel tube 19.
  • a number of superconducting tapes 20 are wound around a hollow core 21.
  • the cooling of the superconducting tapes can be effected by supplying refrigerant to the channel 22 of the hollow core.
  • the reference number 23 denotes the position in which the cold shunt can be placed as explained above, whereas the reference number 24 denotes the position within the dielectric insulator, where the hot shunt can be placed.

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

Cette invention concerne un procédé et un câble supraconducteur offrant une protection contre les surintensités, un détecteur d'intensité qui comprend un coupe-circuit ou un limiteur d'intensité inséré en série avec le câble supraconducteur, détecteur d'intensité qui peut être constitué de matériau supraconducteur réduisant l'intensité à un niveau inférieur à celle du conducteur de câble du câble supraconducteur. Lorsque l'intensité dans le matériau supraconducteur est trop élevée, elle est entraînée pendant une courte période vers un circuit en parallèle froid relié aux conducteurs de câble du câble supraconducteur. Après cette courte période, l'intensité est entraînée vers un circuit en parallèle chaud relié à l'extérieur des conducteurs de câble du câble, permettant ainsi la dissipation de la chaleur qui doit être effectuée à température ambiante. Ce procédé et ce câble de l'invention permettent d'empêcher la destruction du câble qui surviendrait si ce câble perdait sa supraconductivité, par exemple à cause d'un problème de refroidissement, et le fonctionnement normal peut rapidement reprendre sans qu'il soit nécessaire de réparer des dommages.
PCT/DK2000/000227 1999-05-17 2000-05-04 Procede de protection contre les surintensites dans un cable supraconducteur, et cable supraconducteur Ceased WO2000070631A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU42865/00A AU4286500A (en) 1999-05-17 2000-05-04 A method for overcurrent protection in a superconducting cable
EP00922477A EP1185993A1 (fr) 1999-05-17 2000-05-04 Procede de protection contre les surintensites dans un cable supraconducteur, et cable supraconducteur
JP2000618993A JP2003500985A (ja) 1999-05-17 2000-05-04 超伝導ケーブルにおける過電流保護の方法

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DKPA199900685 1999-05-17
DKPA199900685 1999-05-17
DKPA199900864 1999-06-17
DKPA199900864 1999-06-17

Publications (2)

Publication Number Publication Date
WO2000070631A2 true WO2000070631A2 (fr) 2000-11-23
WO2000070631A3 WO2000070631A3 (fr) 2001-02-08

Family

ID=26064453

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2000/000227 Ceased WO2000070631A2 (fr) 1999-05-17 2000-05-04 Procede de protection contre les surintensites dans un cable supraconducteur, et cable supraconducteur

Country Status (5)

Country Link
EP (1) EP1185993A1 (fr)
JP (1) JP2003500985A (fr)
CN (1) CN1351774A (fr)
AU (1) AU4286500A (fr)
WO (1) WO2000070631A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1168560A3 (fr) * 2000-06-19 2005-12-21 Haldor Topsoe A/S Limiteur de courant à haute puissance pour un système de puissance électrique
US7149560B2 (en) * 2001-11-02 2006-12-12 Sumitomo Electric Industries, Ldt. Superconducting cable and superconducting cable line
US7743485B1 (en) * 2003-06-19 2010-06-29 Sumitomo Electric Industries, Ltd. Method of manufacturing a superconducting cable
US8532725B2 (en) 2007-02-09 2013-09-10 American Superconductor Corporation Parallel connected HTS utility device and method of using same

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100414799C (zh) * 2004-11-26 2008-08-27 北京云电英纳超导电缆有限公司 一种超导电缆保护方法
KR100622740B1 (ko) * 2005-01-13 2006-09-19 엘에스전선 주식회사 퀀치 검출이 가능한 초전도 전력 케이블 및 이를 이용한 퀀치 검출 장치
JP5100734B2 (ja) * 2009-10-07 2012-12-19 中国電力株式会社 送電線保護装置
KR101066965B1 (ko) 2010-07-30 2011-09-23 엘에스전선 주식회사 초전도 케이블 보호 장치 및 방법
CN109856480A (zh) * 2019-01-23 2019-06-07 深圳供电局有限公司 一种超导带材的过电流测试装置
CN114583668A (zh) * 2022-03-31 2022-06-03 广东电网有限责任公司 一种应用于配电网的超导电缆保护方法及装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU809405A2 (ru) * 1975-04-18 1981-03-08 Государственный Научно-Исследова-Тельский Энергетический Институтим. Г.M.Кржижановского Секционированный сверхпровод щийКАбЕль пЕРЕМЕННОгО TOKA
DD126232A1 (fr) * 1976-06-19 1977-07-06
JPS6439230A (en) * 1987-07-31 1989-02-09 Mitsubishi Electric Corp Protective device for superconducting circuit
JPH01126132A (ja) * 1987-09-30 1989-05-18 Nippon Kouatsu Electric Co 限流用エレメント
JPH0522856A (ja) * 1991-06-20 1993-01-29 Mitsubishi Electric Corp 限流素子
US5591698A (en) * 1994-12-29 1997-01-07 University Of Hawaii Low temperature (T lower than 950° C.) preparation of melt texture YBCO superconductors

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1168560A3 (fr) * 2000-06-19 2005-12-21 Haldor Topsoe A/S Limiteur de courant à haute puissance pour un système de puissance électrique
US7149560B2 (en) * 2001-11-02 2006-12-12 Sumitomo Electric Industries, Ldt. Superconducting cable and superconducting cable line
US7743485B1 (en) * 2003-06-19 2010-06-29 Sumitomo Electric Industries, Ltd. Method of manufacturing a superconducting cable
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

Also Published As

Publication number Publication date
CN1351774A (zh) 2002-05-29
JP2003500985A (ja) 2003-01-07
WO2000070631A3 (fr) 2001-02-08
AU4286500A (en) 2000-12-05
EP1185993A1 (fr) 2002-03-13

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