WO2006001226A1 - 超電導限流素子及びその作製方法 - Google Patents
超電導限流素子及びその作製方法 Download PDFInfo
- Publication number
- WO2006001226A1 WO2006001226A1 PCT/JP2005/011117 JP2005011117W WO2006001226A1 WO 2006001226 A1 WO2006001226 A1 WO 2006001226A1 JP 2005011117 W JP2005011117 W JP 2005011117W WO 2006001226 A1 WO2006001226 A1 WO 2006001226A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thin film
- superconducting
- current limiting
- limiting element
- alloy layer
- Prior art date
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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
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S420/00—Alloys or metallic compositions
- Y10S420/901—Superconductive
Definitions
- the present invention relates to a superconducting current limiting element that limits an excessive current such as a short-circuit current flowing in an electric circuit, and a method for manufacturing the same.
- a superconductor can flow a large current with zero electric resistance in a superconducting state, but an electric resistance is generated when a current larger than a predetermined current value (critical current) flows.
- a predetermined current value critical current
- the temperature of the superconductor rises due to the generated heat, and becomes a normal conducting state, generating a larger electric resistance.
- a major issue in promoting the liberalization of electric power is the increase in short-circuit fault current associated with the distributed power supply interconnection.
- the most promising force as a countermeasure is the introduction of a current limiter that suppresses the fault current with low impedance during normal conditions and high impedance during system faults.
- the introduction of a current limiter also has the advantage of reducing the fault current specifications of the distributed power supply, contributing to lowering the cost of the distributed power supply and improving facility security. From the standpoint of promoting the liberalization of electric power, there is a very high social demand for the realization of a low-cost, high-reliability current limiter.
- the superconducting thin film current limiter using a large area superconducting thin film is compact, responds instantly to overcurrent, and has little AC loss that is always generated.
- reliability it is considered to be the most excellent from the viewpoint of reliability, performance and physique, and expandability to large capacity.
- a superconducting thin film current limiter has a thin film current limiting element that operates at liquid nitrogen temperature (66-77.3 K) connected in series to the power system.
- the system current is transferred to the normal conduction state (N) and the system current is suppressed by the normal conduction resistance.
- This is also called the SN transition resistance type current limiter.
- YBCO High-area superconducting oxide thin films such as YBa Cu 2 O (hereinafter referred to as YBCO)
- Superconducting thin-film current limiting elements are limited by generating a resistive voltage V in the event of an accident, but the voltage that can be generated per unit length of thin-film current limiting elements (indicator) (shared electric field) ) Is high, the element length can be shortened accordingly, and the required area of the superconducting thin film can be reduced.
- the improvement of the shared electric field results in an increase in the amount of generated heat.
- a thin-film current limiting element is usually designed so that the temperature of the superconducting thin film does not exceed room temperature within a specified current-limiting time (for example, 0.1 seconds).
- the area of the superconducting thin film formed on the sapphire substrate required for a 6.6 kV / 2 kA class current limiting device can be reduced to about 1/30 of the previous device, greatly reducing costs. It is assumed. However, in this method, it is necessary to use a large amount of high thermal conductive ceramic substrate such as aluminum nitride or indium plate, and these are expensive, so there is a limit to cost reduction.
- Non-Patent Document 1 A. Heinrich, R. Semerad, H. Kinder, H. Mosebach and M. Lindmayer, "Fault current limiting properties o! YBCO- films on sapphire substrates", IEEE Tran s. Appl. Supercond 9 (1999) 660-663
- Non-Patent Document 2 B. Gromoll, G. Ries, W. Schmidt, H.-P. Kraemer, B. Seebacher, B. Ut z, R. Nies, H.-W. Neumueller, E. Baltzer, S. Fischer and B. Heismann, "Resistive fa ult current limiters with YBCO films- lOOkVA functional model", IEEE Trans. Appl. Supercond. 9 (1999) 656-659
- Non-Patent Document 3 H. Kubota, YK Arai, M. Yamazaki, H. Yoshino and H. Nagamura, "A new model of fault current limiter using YBCOthin film, IEEE Trans. Appl. Super cond. 9 (1999) 1365- 1368
- Non-Patent Document 4 Kubota, Kudo, Yoshino, Kazutomo: “Conceptual design of YBCO thin film current limiter (6.6kVZ 2 kA class)”, 64th Spring 2001 Low Temperature Engineering 'Superconductivity Society Proceedings, p. 166 Patent Reference 1: Patent No. 2954124 Disclosure of the invention
- a pure metal such as gold or silver is vapor-deposited on the superconducting thin film, and the current is shunted during the normal conducting transition. Used as a protective layer.
- the resistivity of pure metal is about two orders of magnitude lower than the resistivity of superconducting oxides, so the resistance of the superconducting line is greatly reduced, and the amount of heat generated at the time of current limiting increases, so the superconducting thin film current limiting element shares The electric field was greatly reduced, and as a result, the required amount of expensive superconducting thin film was increased, which was very disadvantageous in terms of cost.
- the object of the present invention is to solve the hot spot problem of a superconducting thin film without significantly reducing the resistance of the superconducting line by depositing an alloy layer having a resistivity much higher than that of pure metal on the superconducting thin film. At the same time, by connecting an external non-inductive shunt resistor made of pure metal or alloy wire in parallel with the superconducting thin film on which the alloy layer is formed, the resistance of the superconducting wire is made higher and higher sharing is achieved. It is an object of the present invention to provide a superconducting current limiting element that can achieve an electric field and a method of manufacturing the same.
- the present invention employs the following means in order to solve the above problems.
- the first means is composed of a superconducting thin film formed on an insulating substrate and an alloy layer formed on the superconducting thin film and having a room temperature resistivity that is at least twice as high as that of pure metal.
- the superconducting current limiting element is characterized in that, when the superconducting thin film undergoes normal conducting transition due to overcurrent, the overcurrent flowing through the superconducting thin film is commutated only to the alloy layer.
- a second means is characterized in that, in the first means, the alloy layer is composed of a binary alloy layer of gold and silver or a multi-element alloy layer in which other elements are added to gold and silver. It is a superconducting current limiting element.
- a third means includes a superconducting thin film formed on an insulating substrate and an alloy layer formed on the superconducting thin film and having a room temperature resistivity that is at least twice as high as that of a pure metal.
- a superconducting current limiting element comprising: a shunt resistor formed of a wire made of a pure metal or an alloy is connected in parallel with the superconducting thin film.
- a fourth means is the superconducting current limiting element according to the third means, wherein the shunt resistor is constituted by a non-inductive winding so that the inductance becomes small.
- a fifth means is a method for producing a superconducting current limiting element as described in the first means or the third means, wherein the superconducting thin film formed on the insulator substrate is sputtered by the sputtering method.
- a superconducting current limiting element is produced by depositing an alloy layer.
- the resistance of the alloy layer can be further increased, and as a result, a superconducting current limiting element having a higher shared electric field can be realized.
- an alloy layer having almost the same composition as the target can be easily formed, and the adhesion with the superconducting thin film is good without performing post-heat treatment. And the contact resistance between the superconducting thin film can be lowered.
- FIG. 1 is a diagram showing a configuration of a superconducting thin film current limiting element according to the invention of the present embodiment.
- FIG. 2 is a diagram showing a configuration of a superconducting thin film current limiting element in which an external non-inductive shunt resistor made of pure metal or an alloy wire is connected in parallel with the superconducting oxide thin film according to the invention of the present embodiment. .
- FIG. 3 is a diagram showing a current limiting test result of the superconducting thin film current limiting element according to the invention of the present embodiment.
- FIG. 4 is a diagram showing a current-limiting test result of a superconducting thin-film current limiting element connected with an external non-inductive shunt resistor according to the invention of this embodiment.
- FIG. 5 is a diagram showing a configuration of a superconducting current limiting element in which a shunt resistor is connected in parallel with a superconducting thin film according to the prior art.
- FIG. 1 is a diagram showing the configuration of a superconducting thin film current limiting element.
- 1 is an insulating substrate with sapphire isotropic force
- 2 is a buffer layer with ceria isotropic force
- 3 is a superconducting oxide thin film with a large area
- 4 is a superconducting oxide thin film 3 with a predetermined film thickness by vapor deposition. It is the formed alloy layer.
- the alloy layer 4 is made of a binary alloy that is stable in air and also has gold and silver strength that does not react with the superconducting oxide thin film 3. Alloy layer 4 as gold?
- Use of a composition containing ⁇ 82 wt% silver is preferable in terms of the structure of the superconducting thin film current limiting element because the resistivity at room temperature is more than twice that of pure gold.
- an alloy with a composition in which 23 wt% silver is mixed with gold has a maximum room temperature resistivity of about five times that of pure gold, and is considered optimal. In the vicinity of 100K, the resistivity of pure gold drops to about 1Z3 at room temperature. The resistivity of a power alloy hardly decreases, so there is a difference of about 15 times.
- Various methods such as vacuum deposition and sputtering can be considered as methods for depositing the alloy layer 4 on the superconducting oxide thin film 3.
- the sputtering method is employed.
- the most common vacuum deposition method requires a precise deposition control of the constituent metals in order to deposit an alloy composed of metals with different melting points with the desired composition. Therefore, there are disadvantages such as requiring post-heat treatment.
- the sputtering method easily forms an alloy film with almost the same composition as the target. Even if post-heat treatment is not performed, the adhesiveness with the superconducting oxide thin film is good, so that the contact resistance can be lowered and it can be used as it is as a current limiting element.
- the present invention is not limited to this.
- commercially available 18 gold gold 75, silver
- Similar effects can be obtained by using multi-element alloys with other elements in gold and silver, such as 12.5 and 12.5 wt%.
- FIG. 2 shows a pure metal or alloy having a resistance value sufficiently smaller than the combined resistance of the superconducting oxide thin film 3 and the alloy layer 4 after the normal conduction transition in order to achieve a higher shared electric field.
- FIG. 2 is a diagram showing the configuration of a superconducting thin film current limiting element in which an external non-inductive shunt resistor 6 made of wires is connected in parallel with a superconducting oxide thin film 3;
- 5 is a gold electrode deposited on both ends of the superconducting oxide thin film 3, and the other symbols correspond to the configurations of the same symbols shown in FIG.
- the role of the non-inductive shunt resistance 6 is superconductivity by transferring the overcurrent commutation at the normal conduction transition (initial stage of current limiting) only to the alloy layer 4 to the non-inductive shunt resistance 6 as well. This is to further alleviate the hot spot problem of the oxide thin film 3 and thereby to increase the resistance of the superconducting thin film current limiting element. In order to facilitate overcurrent commutation, it is desirable to reduce the inductance of the external non-inductive shunt resistor 6 as much as possible, so a low-cost alloy wire was used to make the non-inductive cage.
- the shared electric field of the superconducting thin film current limiting element must be determined so that the element does not exceed room temperature at the time of current limiting, and an external non-inductive current dividing resistor having a small resistance value 6
- the temperature rise can be suppressed by sufficiently increasing the heat capacity of the non-inductive shunt resistor 6, the heat generated in the non-inductive shunt resistor 6 is generated by the superconducting thin film.
- the shared electric field of the current limiting element body is not reduced.
- the superconducting oxide thin film used for the superconducting thin film current limiting element in this current limiting test is a YBCO thin film with a thickness of 300 nm and a critical current density of 3 MA / cm 2 on a 5 mm x 60 mm x 1 mm sapphire substrate ( A target of an alloy with a composition in which gold is deposited on each 10 mm at both ends to form an electrode, and gold is mixed with 23 wt% silver in the central 40 mm portion. A gold-silver alloy layer with a thickness of about 100 nm was sputter-deposited using a slab. By depositing the gold-silver alloy layer, the resistance at room temperature of the superconducting thin-film current limiting element was reduced to about 1Z7 compared to the YBCO layer alone (about 60 ohms).
- FIG. 3 is a diagram showing a current limiting test result when the above superconducting current limiting element is used.
- Conductive oxide thin film 3 can be energized for 5 cycles (0.1 seconds) without burning, and 25 V /
- a gold-silver alloy layer having a film thickness of about 50 is sputter-deposited on the superconducting oxide thin film 3 similar to the YBCO thin film used in the superconducting thin film current limiting element in the current limiting test to obtain a higher room temperature resistance.
- a superconducting thin film with a shunt layer with an alloy shunt layer (approx. 15 ohms) was prepared, and an external non-inductive shunt resistance 6 (approx. Ohm) connected.
- FIG. 4 is a diagram showing the results of a current limiting test in the case of using the superconducting current limiting element.
- the AC energizing current was increased instantaneously to about 30 A force and about 80 A.
- the superconducting oxide thin film 3 transitioned to the normal conducting state without burning, and the overcurrent flowing through the superconducting oxide thin film 3 was commutated to the alloy layer 4 and the non-inductive shunt resistor 6.
- an AC voltage of approximately 176 V is applied across the superconducting thin film current limiting element.
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- Emergency Protection Circuit Devices (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112005001495T DE112005001495B4 (de) | 2004-06-24 | 2005-06-17 | Supraleitendes Fehlerstrom-Begrenzungs-Element und Verfahren zur Herstellung desselben |
JP2006528493A JP4644779B2 (ja) | 2004-06-24 | 2005-06-17 | 超電導限流素子 |
US11/630,478 US8088713B2 (en) | 2004-06-24 | 2005-06-17 | Superconducting fault-current limiting element and the process for producing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004186966 | 2004-06-24 | ||
JP2004-186966 | 2004-06-24 |
Publications (1)
Publication Number | Publication Date |
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WO2006001226A1 true WO2006001226A1 (ja) | 2006-01-05 |
Family
ID=35781714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/011117 WO2006001226A1 (ja) | 2004-06-24 | 2005-06-17 | 超電導限流素子及びその作製方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8088713B2 (ja) |
JP (1) | JP4644779B2 (ja) |
CN (1) | CN1973381A (ja) |
DE (1) | DE112005001495B4 (ja) |
WO (1) | WO2006001226A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008283106A (ja) * | 2007-05-14 | 2008-11-20 | National Institute Of Advanced Industrial & Technology | 超電導限流素子 |
JP2009049257A (ja) * | 2007-08-22 | 2009-03-05 | National Institute Of Advanced Industrial & Technology | 超電導限流素子 |
JP2009212522A (ja) * | 2008-03-05 | 2009-09-17 | Bruker Hts Gmbh | 電流調整用超電導装置 |
JP2010263036A (ja) * | 2009-05-01 | 2010-11-18 | National Institute Of Advanced Industrial Science & Technology | 超電導限流素子 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6046036B2 (ja) * | 2011-05-24 | 2016-12-14 | 古河電気工業株式会社 | 超電導限流器用の超電導素子、超電導限流器用の超電導素子の製造方法および超電導限流器 |
SG195218A1 (en) | 2011-05-31 | 2013-12-30 | Furukawa Electric Co Ltd | Oxide superconductor thin film, superconducting fault current limiter, and method for manufacturing oxide superconductor thin film |
KR101880677B1 (ko) * | 2016-04-27 | 2018-07-20 | 인하공업전문대학산학협력단 | 무유도 저항의 제조 방법 및 제조 장치 |
CN105976939A (zh) * | 2016-05-05 | 2016-09-28 | 成都君禾天成科技有限公司 | 基于化学溶液法制备铋系超导薄膜的方法 |
US11441954B2 (en) * | 2019-01-30 | 2022-09-13 | King Fahd University Of Petroleum And Minerals | Method, system and apparatus for measuring rest time of superconducting nanowire |
CN111244921A (zh) * | 2020-03-09 | 2020-06-05 | 广东电网有限责任公司电力科学研究院 | 一种混合式直流超导限流器及短路电流限制方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05251761A (ja) * | 1992-03-04 | 1993-09-28 | Mitsubishi Electric Corp | 酸化物超電導膜を用いた限流導体 |
JPH0883932A (ja) * | 1994-09-09 | 1996-03-26 | Sumitomo Electric Ind Ltd | 限流素子 |
JP2002198577A (ja) * | 2000-12-27 | 2002-07-12 | Mitsubishi Electric Corp | 超電導薄膜限流器 |
JP2003153437A (ja) * | 2001-11-13 | 2003-05-23 | Nisshin Denki Seisakusho:Kk | 通信線の保安器 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2084394C (en) * | 1991-12-02 | 1997-06-24 | Takao Nakamura | Superconducting multilayer interconnection formed of oxide superconductor material and method for manufacturing the same |
CA2083566A1 (en) * | 1992-11-23 | 1994-05-24 | Paul Lambert | Alloy for htsc composite conductors |
US6051846A (en) * | 1993-04-01 | 2000-04-18 | The United States Of America As Represented By The Secretary Of The Navy | Monolithic integrated high-Tc superconductor-semiconductor structure |
US5361055A (en) * | 1993-12-17 | 1994-11-01 | General Dynamics Corporation | Persistent protective switch for superconductive magnets |
DE19634424C2 (de) * | 1996-08-26 | 1998-07-02 | Abb Research Ltd | Verfahren zur Herstellung eines Strombegrenzers mit einem Hochtemperatursupraleiter |
JP3977884B2 (ja) * | 1996-10-25 | 2007-09-19 | 新日本製鐵株式会社 | 酸化物超電導体を用いた限流素子、限流器およびその製造方法 |
JP3806479B2 (ja) * | 1997-01-29 | 2006-08-09 | 株式会社日立製作所 | 変流器 |
US5969928A (en) * | 1997-12-03 | 1999-10-19 | Gould Electronics Inc. | Shunt for circuit protection device |
WO1999033122A1 (de) * | 1997-12-19 | 1999-07-01 | Siemens Aktiengesellschaft | SUPRALEITERAUFBAU MIT HOCH-Tc-SUPRALEITERMATERIAL, VERFAHREN ZUR HERSTELLUNG DES AUFBAUS SOWIE STROMBEGRENZEREINRICHTUNG MIT EINEM SOLCHEN AUFBAU |
JP2954124B2 (ja) * | 1998-01-07 | 1999-09-27 | 株式会社東芝 | 超電導限流素子 |
DE19856607C1 (de) * | 1998-12-08 | 2000-03-02 | Siemens Ag | Resistive Strombegrenzungseinrichtung mit mindestens einer von einer isolierenden Schicht abgedeckten Leiterbahn unter Verwendung von Hoch-T¶c¶-Supraleitermaterial |
DE19963181C2 (de) * | 1999-12-27 | 2002-04-18 | Siemens Ag | Resistive Strombegrenzereinrichtung für Gleich- oder Wechselstrom mit wenigstens einer Leiterbahn mit Hoch-T¶c¶-Supraleitermaterial |
JP3872738B2 (ja) * | 2002-09-04 | 2007-01-24 | 新日本製鐵株式会社 | 高耐電圧超電導限流器 |
-
2005
- 2005-06-17 CN CNA2005800209317A patent/CN1973381A/zh active Pending
- 2005-06-17 JP JP2006528493A patent/JP4644779B2/ja not_active Expired - Fee Related
- 2005-06-17 DE DE112005001495T patent/DE112005001495B4/de not_active Expired - Fee Related
- 2005-06-17 WO PCT/JP2005/011117 patent/WO2006001226A1/ja active Application Filing
- 2005-06-17 US US11/630,478 patent/US8088713B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05251761A (ja) * | 1992-03-04 | 1993-09-28 | Mitsubishi Electric Corp | 酸化物超電導膜を用いた限流導体 |
JPH0883932A (ja) * | 1994-09-09 | 1996-03-26 | Sumitomo Electric Ind Ltd | 限流素子 |
JP2002198577A (ja) * | 2000-12-27 | 2002-07-12 | Mitsubishi Electric Corp | 超電導薄膜限流器 |
JP2003153437A (ja) * | 2001-11-13 | 2003-05-23 | Nisshin Denki Seisakusho:Kk | 通信線の保安器 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008283106A (ja) * | 2007-05-14 | 2008-11-20 | National Institute Of Advanced Industrial & Technology | 超電導限流素子 |
JP2009049257A (ja) * | 2007-08-22 | 2009-03-05 | National Institute Of Advanced Industrial & Technology | 超電導限流素子 |
JP2009212522A (ja) * | 2008-03-05 | 2009-09-17 | Bruker Hts Gmbh | 電流調整用超電導装置 |
JP2010263036A (ja) * | 2009-05-01 | 2010-11-18 | National Institute Of Advanced Industrial Science & Technology | 超電導限流素子 |
Also Published As
Publication number | Publication date |
---|---|
CN1973381A (zh) | 2007-05-30 |
JP4644779B2 (ja) | 2011-03-02 |
JPWO2006001226A1 (ja) | 2008-04-17 |
DE112005001495T5 (de) | 2007-05-16 |
DE112005001495B4 (de) | 2011-06-16 |
US8088713B2 (en) | 2012-01-03 |
US20080026946A1 (en) | 2008-01-31 |
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