CN107799226B - Internal cooling high-temperature superconducting composite conductor - Google Patents
Internal cooling high-temperature superconducting composite conductor Download PDFInfo
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- CN107799226B CN107799226B CN201610805631.XA CN201610805631A CN107799226B CN 107799226 B CN107799226 B CN 107799226B CN 201610805631 A CN201610805631 A CN 201610805631A CN 107799226 B CN107799226 B CN 107799226B
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- 239000002131 composite material Substances 0.000 title claims abstract description 74
- 239000004020 conductor Substances 0.000 title claims abstract description 74
- 238000001816 cooling Methods 0.000 title abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 50
- 239000002184 metal Substances 0.000 claims abstract description 50
- 239000002826 coolant Substances 0.000 claims abstract description 28
- 230000017105 transposition Effects 0.000 claims abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 238000005057 refrigeration Methods 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052734 helium Inorganic materials 0.000 claims description 5
- 239000001307 helium Substances 0.000 claims description 5
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 5
- 238000010618 wire wrap Methods 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- 229910021521 yttrium barium copper oxide Inorganic materials 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- OSOKRZIXBNTTJX-UHFFFAOYSA-N [O].[Ca].[Cu].[Sr].[Bi] Chemical compound [O].[Ca].[Cu].[Sr].[Bi] OSOKRZIXBNTTJX-UHFFFAOYSA-N 0.000 claims description 3
- BTGZYWWSOPEHMM-UHFFFAOYSA-N [O].[Cu].[Y].[Ba] Chemical compound [O].[Cu].[Y].[Ba] BTGZYWWSOPEHMM-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims 1
- 239000002887 superconductor Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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- 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
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/20—Metal tubes, e.g. lead sheaths
- H01B7/202—Longitudinal lapped metal tubes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/24—Devices affording localised protection against mechanical force or pressure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
- H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
- H01B7/423—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation using a cooling fluid
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- 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
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- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
The invention relates to an internal cooling high-temperature superconducting composite conductor, which is sequentially provided with a composite conductor core, a cooling medium channel, a metal sheath and an insulating layer. The composite conductor core comprises a parallel conductor consisting of superconducting strips and a metal pipe sleeve with a U-shaped cross section arranged outside the parallel conductor; a metal blind plate at the opening of the U-shaped metal pipe sleeve. The composite conductor core is spirally arranged in the cooling medium channel along the length direction of the conductor, realizes space torsion transposition according to a certain pitch, and is coated by the metal sheath. According to the technical scheme provided by the invention, the spiral cooling channel is arranged, so that the heat transfer surface is increased, and the cold transfer efficiency of the low-temperature cooling medium is improved; the metal sheath can be connected in parallel and shunted after the composite conductor core is quenched, so that the safe operation of the high-temperature superconducting composite conductor is ensured, the functional characteristics of the high-temperature superconducting composite conductor are ensured, and the operation stability is improved.
Description
Technical Field
The invention relates to a high-temperature superconducting composite conductor, in particular to a large-current-carrying high-temperature superconducting composite conductor with an in-band cooling channel and high stability.
Background
Since 2008, research institutions at home and abroad actively carry out related development and research on the compounding of high-temperature superconducting tapes, and at present, superconducting composite conductors become research hotspots. The existing composite superconducting materials mainly comprise three types: high temperature superconducting Roebel Cable, twisted superconducting composite tape, and cored Cable. The current density of the cored cable with the copper framework as the supporting material is slightly lower than that of other two superconducting composite materials. In terms of the manufacturing process, the superconducting tape adopted by the Roebel Cable has high requirements on quality, needs to be cut by laser, and has high manufacturing process difficulty; the manufacturing process of the torsional type superconducting composite strip in the three existing superconducting composite strips is relatively simple. From the economic consideration, the Roebel Cable superconducting composite conductor is a commodity, the price is very expensive, for example, the Roebel Cable with Ic of 1000A is about 3.5 times that of other two superconducting composite tapes, and the composite superconducting materials need to provide a cooling environment for the composite superconducting materials to realize the superconducting current-carrying operation. Therefore, from the aspects of improving the current density, enlarging the current carrying capacity, reducing the ac loss, and the like, a composite high-temperature superconductor having good superconducting properties such as high current carrying capacity, low ac loss, and self-cooling capacity is a development trend in the future.
In recent years, with the continuous progress of the preparation technology of high-temperature superconducting materials, a series of superconducting materials with excellent performance are produced, the critical current of a single superconducting strip under the self-field can reach 100A, and the foundation is undoubtedly laid for the development of the application of the superconducting technology. However, as the demand of people for large current-carrying power devices increases gradually, the current-carrying capacity of a single superconducting tape cannot meet the requirements of practical application, and the simple parallel-wound structure of a plurality of superconducting tapes can cause large circulation due to tiny leakage reactance among wire branches, increase alternating current loss, cause uneven magnetic field distribution, and reduce the critical current of the superconducting tapes. Therefore, it is necessary to provide a technical solution for realizing a high current characteristic by using a composite technology. Through a space transposition mode, unbalanced current between the wires is reduced, and the wires have the characteristic of current sharing.
Disclosure of Invention
The invention aims at the problems and provides a large-current-carrying high-temperature superconducting composite conductor with an in-band cooling channel and high stability.
In order to achieve the purpose, the invention provides the following technical scheme:
an internal cooling high-temperature superconducting composite conductor comprises a composite conductor core (1), a cooling medium channel (2), a metal sheath (3) and an insulating layer (4) which are sequentially arranged, wherein the composite conductor core (1) is spirally arranged in the cooling medium channel (2) along the length direction of the conductor, and the composite conductor core (1) comprises parallel conductors formed by superconducting strips (5) and a metal pipe sleeve (7) with a U-shaped cross section arranged on the outer side of the parallel conductors; a metal blind plate (8) is arranged at the opening of the U-shaped metal pipe sleeve.
In a first preferred embodiment of the internally cooled high temperature superconducting composite conductor, the superconducting tapes (5) are arranged in layers.
According to the second preferred scheme of the internal cooling high-temperature superconducting composite conductor, a silver-plated copper wire wrapping layer (6) is wrapped outside a parallel conductor, and a silver layer with the thickness of 0.001-0.002mm is plated on the surface of the parallel conductor.
In a third preferred scheme of the internal cooling high-temperature superconducting composite conductor, two ends of a cooling medium channel (2) are respectively connected with an inlet and an outlet of a refrigeration cycle unit.
According to the fourth preferred scheme of the internal cooling high-temperature superconducting composite conductor, a metal sheath (3) is a metal sleeve with an outer square and an inner circle, and an inner cavity of the metal sleeve is fixed with the side surface of a composite conductor core in an interference fit mode.
According to a fifth preferred scheme of the internal cooling high-temperature superconducting composite conductor, the refrigeration cycle unit comprises a refrigeration unit and a low-temperature cooling medium conveying unit; the refrigerating unit comprises a refrigerator, a heat exchanger and a liquid nitrogen and helium circulating pump.
According to a sixth preferred scheme of the internal cooling high-temperature superconducting composite conductor, the superconducting tape (5) is bismuth strontium calcium copper oxide or yttrium barium copper oxide.
According to a seventh preferred scheme of the internally-cooled high-temperature superconducting composite conductor, the metal sheath (3), the metal pipe sleeve (7) and the metal blind plate (8) are prepared from the following components in percentage by mass: 0.6% of silicon, 0.7% of iron, 0.05-0.2% of copper, 1.0-1.5% of manganese, 0.1% of zinc, 0.15% of other impurities and the balance of aluminum.
According to the eighth optimized scheme of the internal cooling high-temperature superconducting composite conductor, the insulating layer (4) is in a polyimide film semi-wrapping structure.
Compared with the closest prior art, the technical scheme provided by the invention has the following beneficial effects:
1. the high-temperature superconducting composite conductor provided by the invention uses the composite superconducting tape as a conductor, so that the conductivity is good, the maximum critical temperature is high, and the electrical property of the tape is improved by more than one time; the temperature of the high-temperature superconducting composite conductor is controlled within the maximum safety value, the functional characteristics of the high-temperature superconducting composite conductor are guaranteed, the production cost is low, and the product reliability is high.
2. The external metal tube structure provided by the invention can provide a cooling medium channel and ensure better mechanical strength.
3. The coating structure of the silver-plated copper wire lapping layer externally provided with the silver layer can improve the stress bearing capacity of the composite conductor core and increase the performance of resisting mechanical deformation.
Drawings
FIG. 1 is a cross-sectional view of a high temperature superconducting composite conductor;
the composite superconducting cable comprises a composite superconductor core, a cooling medium channel, a metal sheath, an insulating layer, a superconducting strip, a silver-plated copper wire wrapping layer, a U-shaped metal pipe sleeve and a metal blind plate, wherein the composite superconducting core is 1, the cooling medium channel is 2, the metal sheath is 3, the insulating layer is 4, the superconducting strip is 5, the silver-plated copper wire wrapping layer is 6, and the metal blind plate is 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention and fig. 1, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
FIG. 1 is a schematic diagram of a self-cooling large-current-carrying high-temperature composite superconductor structure, which comprises 1-a composite superconductor core, 2-a cooling medium channel, 3-a metal sheath, 4-an insulating layer, 5-a superconducting tape, 6-a silver-plated copper wire wrapping layer, 7-a U-shaped metal pipe sleeve and 8-a metal blind plate.
The composite superconductor core 1 comprises a parallel conductor formed by laminating a plurality of superconducting tapes 5 with rectangular cross sections, wherein the superconducting tapes 5 can be first-generation high-temperature superconducting tapes Bismuth Strontium Calcium Copper Oxide (BSCCO) or second-generation coating conductors yttrium barium copper oxide (YBCO, REBCO and the like).
The parallel conductors are wrapped with soft metal materials, the soft metal materials are silver-plated copper wires, the cross sections of the copper wires are circular, and the surfaces of the copper wires are plated with silver layers with the thickness of 0.001-0.002 mm. The soft metal material resists the stress influence of the parallel conductors in the twisting process through geometric deformation so as to play a role in protecting the parallel conductors.
The parallel conductor coated with the soft metal material is placed in the U-shaped metal sleeve 7, and the U-shaped sleeve plays a role in fixing the parallel conductor on one hand, and is convenient for twisting the parallel conductor along the axial length direction on the other hand, so that the mechanical damage of the prestress generated by clamping on the superconducting tape is prevented.
The composite conductor core 1 is spirally arranged in the cooling medium channel along the length direction of the conductor, space torsion transposition is realized according to a certain pitch, the composite conductor core is coated by the metal sheath 3, the conductor space transposition is realized through torsion, the influence of an electromagnetic field on the current carrying capacity of each superconducting strip is balanced, and the current-sharing distribution of a plurality of superconducting strips is realized. The twisting pitch of the composite superconductor core 1 is determined according to the actual current sharing characteristic.
The cooling medium channel 2 is an air gap formed between the composite superconductor core 1 and the metal sheath 3. The air gap entirely surrounds the composite conductor core and extends helically along the axial length direction. The cooling medium channel 2 is advantageous for improving the heat radiation efficiency by enlarging the contact surface area with the composite conductor core. The cooling medium channel 2 can flow liquid, gas or gas-liquid mixed low-temperature refrigerant, and the temperature range of the low-temperature refrigerant is wide (4.2K-90K).
The cooling medium channel is connected with the inlet and the outlet of the refrigeration cycle unit. The refrigeration cycle unit includes a refrigeration unit and a low-temperature cooling medium delivery unit. The refrigerating unit comprises a refrigerator, a heat exchanger and a liquid nitrogen or liquid helium circulating pump. The circulating flow of the cryogenic cooling medium in the delivery unit is achieved by pressurization.
The metal sheath 3 is a metal sleeve with square outside and round inside, and the inner cavity of the metal sleeve is fixed with the side surface of the composite superconductive core 1 in an interference fit mode and in seamless contact with the side surface. The metal sheath 3 is connected in parallel and shunted after the composite superconductive conductor core is quenched, so that the heat load of the high-temperature superconductive composite conductor is prevented from increasing beyond the maximum safety value, an internal superconductive strip is protected, and the current-carrying running stability of the high-temperature superconductive composite conductor is improved. The metal sheath 3 needs to have certain mechanical bending strength and can be wound by a process; the metal sheath 3 needs to ensure a certain pressure and air tightness to prevent the internal cooling medium from expanding to exert pressure and leakage influence on the metal sheath. Particularly when low-temperature helium gas is used as a cooling medium, very high requirements are placed on the metal sheath material and the gas tightness because helium gas molecules are very small.
Based on the characteristic requirements, the metal sheath, the metal pipe sleeve and the metal blind plate material are prepared from the following components in percentage by mass: 0.6% of silicon, 0.7% of iron, 0.05-0.2% of copper, 1.0-1.5% of manganese, 0.1% of zinc, 0.15% of other impurities and the balance of aluminum.
The insulating layer 4 is of a polyimide film half-wrapping structure and wraps the outer surface of the metal sheath, so that the external insulating property of the composite superconductor can be ensured, and the composite superconductor is convenient to apply to develop the research work of high-current-carrying superconducting power equipment.
In the normal circulation process, the current passes through the high-temperature superconducting tape 8 in the composite superconductor core 1, and the cooling is realized by the cooling medium in the cooling medium channel 2. The high-temperature superconducting tape has a good cooling effect and low alternating current loss. Meanwhile, the torsion transposition of the plurality of high-temperature superconducting strips 5 along the axial direction also ensures that the magnetic field of each superconducting strip is uniformly distributed and has better consistency under the influence of the magnetic field, thereby being convenient for prolonging the service life of the high-temperature composite superconductor. The cooling medium channel 2 can be filled with low-temperature cooling gas or cooling liquid, and the temperature of the cooling medium at the inlet and the outlet can be controlled by utilizing the refrigerator according to the operating temperature of the composite superconductor.
Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can make modifications and equivalents to the embodiments of the present invention without departing from the spirit and scope of the present invention, which is set forth in the claims of the present application.
Claims (5)
1. An internally-cooled high-temperature superconducting composite conductor comprises a composite conductor core (1), a cooling medium channel (2), a metal sheath (3) and an insulating layer (4) which are sequentially arranged, and is characterized in that the composite conductor core (1) is spirally arranged in the cooling medium channel (2) along the length direction of a conductor, the composite conductor core realizes spatial torsion transposition according to a certain pitch, and conductor spatial transposition is realized through torsion, and the composite conductor core (1) comprises a parallel conductor consisting of superconducting strips (5) and a metal pipe sleeve (7) with a U-shaped cross section arranged on the outer side of the parallel conductor; a metal blind plate (8) is arranged at the opening of the U-shaped metal pipe sleeve;
the metal sheath (3), the metal pipe sleeve (7) and the metal blind plate (8) are prepared from the following components in percentage by mass: 0.6% of silicon, 0.7% of iron, 0.05-0.2% of copper, 1.0-1.5% of manganese, 0.1% of zinc, 0.15% of other impurities and the balance of aluminum;
the insulating layer (4) is of a polyimide film semi-wrapping structure;
the superconducting tapes (5) are arranged in a stack;
the parallel conductor is wrapped by a silver-plated copper wire wrapping layer (6), and the thickness of silver plating on the surface of the parallel conductor is 0.001-0.002 mm.
2. An internally cooled high temperature superconducting composite conductor according to claim 1, characterized in that both ends of the cooling medium channel (2) are connected with the inlet and outlet of a refrigeration cycle unit respectively.
3. The internally cooled high-temperature superconducting composite conductor according to claim 1, wherein the metal sheath (3) is a metal sleeve with an outer square and an inner circle, and an inner cavity of the metal sleeve is fixed with the side surface of the composite conductor core in an interference fit manner.
4. The internally cooled high temperature superconducting composite conductor according to claim 2, wherein the refrigeration cycle unit comprises a refrigeration unit and a cryogenic cooling medium delivery unit; the refrigerating unit comprises a refrigerator, a heat exchanger and a liquid nitrogen or liquid helium circulating pump.
5. An internally cooled high temperature superconducting composite conductor according to claim 1, characterized in that the superconducting tapes (5) are bismuth strontium calcium copper oxide or yttrium barium copper oxide.
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| CN201610805631.XA CN107799226B (en) | 2016-09-07 | 2016-09-07 | Internal cooling high-temperature superconducting composite conductor |
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| CN201610805631.XA CN107799226B (en) | 2016-09-07 | 2016-09-07 | Internal cooling high-temperature superconducting composite conductor |
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| CN109698045A (en) * | 2018-11-07 | 2019-04-30 | 安徽宏源特种电缆集团有限公司 | A kind of high-temperature superconductive cable conductor structure suitable for liquid nitrogen temperature |
| CN110828058B (en) * | 2019-11-14 | 2021-04-06 | 中国科学院合肥物质科学研究院 | High-current-carrying high-temperature superconducting composite conductor based on split stacking structure |
| CN110767376B (en) * | 2019-11-14 | 2020-12-08 | 中国科学院合肥物质科学研究院 | Thermal forming method suitable for improving mechanical property of high-temperature superconducting composite conductor |
| CN113077934B (en) * | 2021-03-31 | 2022-06-28 | 上海超导科技股份有限公司 | Compact superconducting cable supporting structure, preparation method and superconducting cable |
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| JP4826996B2 (en) * | 2004-07-29 | 2011-11-30 | 住友電気工業株式会社 | Superconducting cable line |
| JP2012074340A (en) * | 2010-09-01 | 2012-04-12 | Fujikura Ltd | High-temperature superconducting cable |
| JP2013140764A (en) * | 2011-12-06 | 2013-07-18 | Sumitomo Electric Ind Ltd | Superconducting cable, superconducting cable line, method for laying superconducting cable, and method for operating superconducting cable line |
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