CN110808122A - CICC conductor based on critical current quasi-isotropy high-engineering current density high-temperature superconducting strand - Google Patents
CICC conductor based on critical current quasi-isotropy high-engineering current density high-temperature superconducting strand Download PDFInfo
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- CN110808122A CN110808122A CN201910971076.1A CN201910971076A CN110808122A CN 110808122 A CN110808122 A CN 110808122A CN 201910971076 A CN201910971076 A CN 201910971076A CN 110808122 A CN110808122 A CN 110808122A
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- current density
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- 239000004020 conductor Substances 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 claims abstract description 34
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 239000002826 coolant Substances 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 23
- 239000011888 foil Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 239000010410 layer Substances 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000011889 copper foil Substances 0.000 claims description 2
- 239000002356 single layer Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002360 preparation method Methods 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
- H01B12/02—Superconductive or hyperconductive conductors, cables, or transmission lines characterised by their form
-
- 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
-
- 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
Abstract
The invention discloses a CICC conductor based on a critical current quasi-isotropy high-engineering current density high-temperature superconducting strand, which belongs to the technical field of superconducting electricians and comprises the following components: the critical current quasi-isotropic high-process current density high-temperature superconducting strand comprises a central conductor, a cooling channel and an armor sleeve, wherein the critical current quasi-isotropic high-process current density high-temperature superconducting strand is spirally wound on the outer surface of the central conductor according to a screw pitch by taking the central axis of a CICC conductor as a reference, and the armor is carried out on the outer layer of the superconducting strand; and the inner side of the central conductor, the critical current quasi-isotropic high-process current density high-temperature superconducting strand and the gaps on the outer side of the central conductor and the inner side of the armor form a cooling channel, so that a channel is provided for the circulation of a cooling medium. The CICC conductor has the advantages of quasi-isotropy of critical current, strong current carrying capacity, high mechanical property, simple production process, suitability for large-scale production and the like. The application of the critical current quasi-isotropic high-engineering current density high-temperature superconducting strand in a power system is widened.
Description
Technical Field
The invention belongs to the technical field of superconducting electricians, and particularly relates to a CICC conductor based on a critical current quasi-isotropic high-engineering current density high-temperature superconducting strand.
Background
In recent years, research on the preparation technology of high-temperature superconducting materials has been greatly advanced. The second generation high temperature superconducting tape represented by ReBCO shows good performance in the aspects of critical current density, mechanical characteristics and the like. Superconducting power devices such as superconducting cables, superconducting current limiters and the like developed based on second-generation high-temperature superconducting tapes have been put into use in power systems.
At present, a cic conductor (Cable in conductor, hereinafter referred to as cic conductor) based on a superconducting conductor structure such as TSTC and CORC is widely applied to the fields of high-magnetic-field magnets, large-current superconducting cables, and the like. However, the critical current of the conventional cic c conductor is significantly reduced by the self-field generated by the conductor, and the current carrying capacity of the cic c conductor is significantly affected. Therefore, a new structure of the CICC conductor needs to be proposed to improve the influence of the self-field of the CICC conductor on the critical current, so as to improve the current carrying capacity of the CICC conductor.
Disclosure of Invention
In order to solve the above problems, the invention provides a CICC conductor based on a critical current quasi-isotropy high-process current density high-temperature superconducting strand, which comprises: the critical current quasi-isotropic high-process current density high-temperature superconducting strand comprises a central conductor, a cooling channel and an armor sleeve, wherein the critical current quasi-isotropic high-process current density high-temperature superconducting strand is spirally wound and wrapped for a circle on the outer surface of the central conductor according to a screw pitch by taking the central axis of a CICC conductor as a reference, and the armor sleeve is used for armoring on the outer layer of the superconducting strand; and the inner side of the central conductor, the critical current quasi-isotropic high-process current density high-temperature superconducting strand, the outer side of the central conductor (2) and the gaps on the inner side of the armor sleeve form cooling channels, so that channels are provided for the circulation of a cooling medium.
The critical current quasi-isotropic high-engineering current density high-temperature superconducting strand consists of a superconducting wire core, a semicircular aluminum strip, a metal foil, a second-generation high-temperature superconducting tape and an aluminum sheath; twisting the superconducting wire core and the semicircular aluminum strip along the central axis direction of the CICC conductor, fixing the twisted superconducting wire core and the semicircular aluminum strip by using a metal foil, and spirally winding a second-generation high-temperature superconducting strip on the outer surface of the metal foil according to the screw pitch and fixing the second-generation high-temperature superconducting strip by using an aluminum sheath.
The section of the critical current quasi-isotropic high-engineering current density high-temperature superconducting strand is circular.
The superconducting wire core is composed of 4 identical secondary wire cores, and the cross section of the superconducting wire core is square.
The section of the secondary wire core is square, and each secondary wire core is formed by stacking the same number of superconducting tapes in parallel.
The stacking mode is horizontally arranged and stacked in parallel or vertically arranged and stacked in parallel, and the stacking modes of two adjacent secondary wire cores are different.
The secondary wire cores at the upper left part and the lower right part are formed by vertically arranging and stacking superconducting tapes in parallel, and the secondary wire cores at the lower left part and the upper right part are formed by vertically arranging and stacking the superconducting tapes in parallel.
The section of the central conductor is a hollow circular ring, and a corrugated pipe is used as the central conductor.
The sheath is made of aluminum material, the cross section of the sheath is a hollow square or circle, the cross section of the hollow part is a circle, and the inner diameter of the hollow part is equal to the sum of the outer diameters of the two superconducting strands and the outer diameter of the central conductor.
The second generation high temperature superconducting tape has a single layer or multiple layers, and the metal foil is aluminum foil or copper foil.
The invention has the beneficial effects that:
1. the isotropic superconducting wire core and the superconducting tape spirally wound outside have isotropy, and both structures are easy to bend, so that the CICC conductor based on the critical current quasi-isotropy high-engineering current density high-temperature superconducting strand has good isotropy and mechanical properties.
2. Compared with the traditional CICC conductor structure, the current density of the conductor is improved, and the current carrying density of the CICC conductor is improved.
3. The conductor provided by the invention has the advantages of good isotropy, strong current carrying capacity, good mechanical property, simple production process, suitability for large-scale production and the like, enriches the types of superconducting conductors, and widens the application of the critical current quasi-isotropy high-current density high-temperature superconducting strand in a power system.
Drawings
FIG. 1 is a schematic diagram of a three-dimensional structure of a CICC conductor of a critical current quasi-isotropic high-process current density high-temperature superconducting strand of example 1;
FIG. 2 is an enlarged cross-sectional view of a CICC conductor of a critical current quasi-isotropic high-process current density high-temperature superconducting strand of example 1;
FIG. 3 is a schematic diagram of a three-dimensional structure of a CICC conductor of a critical current quasi-isotropic high-process current density high-temperature superconducting strand of example 2;
FIG. 4 is an enlarged cross-sectional view of a CICC conductor of a critical current quasi-isotropic high-process current density high-temperature superconducting strand of example 2;
FIG. 5 is a schematic diagram of a three-dimensional structure of a single critical current quasi-isotropic high-process current density high-temperature superconducting strand;
reference numerals:
critical current quasi-isotropic high-process current density high-temperature superconducting strand-1, central conductor-2, cooling channel-3, armor-4, superconducting wire core-5, semicircular aluminum strip-6, metal foil-7, second-generation high-temperature superconducting strip-8 and aluminum clad-9.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
example 1: CICC conductor of square armor
As shown in fig. 1, the cic conductor is composed of a central conductor 2, a critical current quasi-isotropic high-process current density high-temperature superconducting strand 1, an armor 4 and a cooling channel 3. The multiple critical current quasi-isotropic high-process current density high-temperature superconducting strands 1 are spirally wound and wrapped on the central conductor 2 for a circle according to a certain screw pitch by taking the central axis of the CICC conductor as a reference, the strands are arranged in parallel, and the square armor sleeve 4 is used for armor of the whole CICC conductor on the outer layer of the multiple critical current quasi-isotropic high-process current density high-temperature superconducting strands 1 after the spiral winding is completed. When the critical current quasi-isotropic high-process current density high-temperature superconducting strand 1 is actually spirally wound, the winding torque is adjusted according to the mechanical characteristics of the superconducting strand, and the critical current is prevented from being influenced by the superconducting strand due to excessive mechanical strain. The number of the adopted critical current quasi-isotropic high-process current density high-temperature superconducting strands 1 is adjusted according to the diameter and the thickness of the central conductor 2.
As shown in fig. 2, the cross-section of the cic conductor is square. The cross section of the armor 4 is a hollow square, the hollow part is a circle, the size of the hollow part can just accommodate a plurality of critical current quasi-isotropic high-process current density high-temperature superconducting strands 1 and cooling channels 3, and aluminum is used as a manufacturing material of the square armor 4. The gaps among the central conductors 2, the critical current quasi-isotropic high-process current density high-temperature superconducting strands 1 and the sheaths 4 form cooling channels 3 for the circulation of a cooling medium.
Example 2: CICC conductor of circular armour
As shown in fig. 3, the cic conductor is composed of a central conductor 2, a critical current quasi-isotropic high-process current density high-temperature superconducting strand 1, an armor 4 and a cooling channel 3. The multiple critical current quasi-isotropic high-process current density high-temperature superconducting strands 1 are spirally wound and wrapped on the central conductor 2 for a circle according to a certain screw pitch by taking the central axis of the CICC conductor as a reference, the strands are arranged in parallel, and the round armor sleeve 4 is used for armor of the whole CICC conductor on the outer layer of the multiple critical current quasi-isotropic high-process current density high-temperature superconducting strands 1 after the spiral winding is completed. When the critical current quasi-isotropic high-process current density high-temperature superconducting strand 1 is actually spirally wound, the winding torque is adjusted according to the mechanical characteristics of the superconducting strand, and the critical current is prevented from being influenced by the superconducting strand due to excessive mechanical strain. The number of the adopted critical current quasi-isotropic high-process current density high-temperature superconducting strands 1 is adjusted according to the diameter and the thickness of the central conductor 2.
As shown in fig. 4, the cross-section of the cic conductor is circular. The section of the armor 4 is a hollow square, the hollow part is a circle, the size of the hollow part can just accommodate a plurality of critical current quasi-isotropic high-process current density high-temperature superconducting strands 1 and cooling channels 3, and aluminum is used as a manufacturing material of the armor 4. The gaps among the central conductors 2, the critical current quasi-isotropic high-process current density high-temperature superconducting strands 1 and the sheaths 10 form cooling channels 3 for the circulation of a cooling medium.
The three-dimensional structure of the single critical current quasi-isotropic high-process current density high-temperature superconducting strand is shown in figure 5. The critical current quasi-isotropic high-process current density high-temperature superconducting strand 1 is composed of a twisted critical current quasi-isotropic high-temperature superconducting conductor, a second-generation high-temperature superconducting tape 8 spirally wound outside the twisted critical current quasi-isotropic high-temperature superconducting conductor and an aluminum jacket 9, wherein the twisted critical current quasi-isotropic high-temperature superconducting conductor is formed by adding a semicircular aluminum strip 6 outside a superconducting wire core 5 and fixing the semicircular aluminum strip by using a metal foil 7, so that the cross section of the critical current quasi-isotropic high-process current density high-temperature superconducting strand 1 is circular. The superconducting wire core 5 and the semicircular aluminum strip 6 are twisted at a certain angle along the direction of the central axis of the conductor. The second generation high temperature superconducting tape 8 is wound on the substrate by a certain screw pitch by taking the twisted critical current quasi-isotropic high temperature superconducting conductor as the substrate, and is fixed by adding an aluminum sheath 9 on the outer layer. The number of layers of the spirally wound second-generation high-temperature superconducting tape 8 may be multiple layers. The superconducting wire core 5 is composed of four secondary wire cores with the same sectional area and square sections, and each secondary wire core is formed by stacking the same number of superconducting tapes in parallel. The secondary core at the upper left part is formed by vertically arranging and stacking the superconducting tapes in parallel, and the secondary core at the upper right part is formed by vertically arranging and stacking the superconducting tapes in parallel. The secondary wire cores at the left lower part and the right lower part are respectively formed by horizontally arranging and vertically arranging and stacking in parallel.
Claims (10)
1. A CICC conductor based on a critical current quasi-isotropy high-process current density high-temperature superconducting strand is characterized by comprising the following components: the critical current quasi-isotropic high-engineering current density high-temperature superconducting strand (1), a central conductor (2), a cooling channel (3) and an armor (4), wherein the critical current quasi-isotropic high-engineering current density high-temperature superconducting strand (1) is spirally wound and wrapped for a circle on the outer surface of the central conductor (2) according to a screw pitch by taking the central axis of a CICC conductor as a reference, and the armor (4) is used for armoring on the outer layer of the superconducting strand (1); gaps on the inner side of the central conductor (2), the critical current quasi-isotropic high-process current density high-temperature superconducting strand (1), the outer side of the central conductor (2) and the inner side of the armor (4) form a cooling channel (3) to provide a channel for the circulation of a cooling medium.
2. The conductor according to claim 1, characterized in that the critical current quasi-isotropic high process current density high temperature superconducting strand (1) consists of a superconducting core (5), a semicircular aluminum strip (6), a metal foil (7), a second generation high temperature superconducting tape (8) and an aluminum jacket (9); twisting the superconducting wire core (5) and the semicircular aluminum strip (6) along the central axis direction of the CICC conductor, fixing the twisted superconducting wire core and the semicircular aluminum strip by using a metal foil (7), and spirally winding a second-generation high-temperature superconducting tape (8) on the outer surface of the metal foil (7) according to the screw pitch and fixing the second-generation high-temperature superconducting tape by using an aluminum sheath (9).
3. The conductor according to claim 1, characterized in that the critical current quasi-isotropic high process current density high temperature superconducting strand (1) is circular in cross-section.
4. The conductor according to claim 1, wherein the superconducting wire core (5) is composed of 4 identical secondary wire cores, and the superconducting wire core (5) has a square cross section.
5. The conductor of claim 4, wherein the secondary cores are square in cross-section, and each secondary core is formed by stacking the same number of superconducting tapes in parallel.
6. The conductor of claim 5, wherein the stacking manner is a horizontally arranged parallel stacking manner or a vertically arranged parallel stacking manner, and the stacking manner of two adjacent secondary cores is different.
7. The conductor of claim 6, wherein the upper left and lower right secondary cores are formed by vertically arranging and stacking superconducting tapes in parallel, and the lower left and upper right secondary cores are formed by vertically arranging and stacking superconducting tapes in parallel.
8. The conductor according to claim 1, characterized in that the cross-section of the central conductor (2) is a hollow circular ring, and a corrugated tube is used as the central conductor (2).
9. Conductor according to claim 1, characterized in that the sheath (4) is of aluminum material, the sheath (4) having a cross section in the shape of a hollow square or circle, the hollow part having a cross section in the shape of a circle, the inner diameter of the hollow part being equal to the sum of the outer diameters of the two superconducting strands and the outer diameter of the central conductor.
10. The conductor according to claim 2, wherein the number of layers of the second generation high temperature superconducting tape (8) is a single layer or a plurality of layers, and the metal foil (7) is an aluminum foil or a copper foil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910971076.1A CN110808122A (en) | 2019-10-14 | 2019-10-14 | CICC conductor based on critical current quasi-isotropy high-engineering current density high-temperature superconducting strand |
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| CN201910971076.1A CN110808122A (en) | 2019-10-14 | 2019-10-14 | CICC conductor based on critical current quasi-isotropy high-engineering current density high-temperature superconducting strand |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112562913A (en) * | 2020-09-14 | 2021-03-26 | 核工业西南物理研究院 | Common vertical plane transposition high-temperature superconducting cable and winding transposition method |
| CN114024296A (en) * | 2021-12-01 | 2022-02-08 | 国网江苏省电力有限公司经济技术研究院 | Superconducting current limiter |
| CN114743752A (en) * | 2022-05-18 | 2022-07-12 | 华北电力大学 | High-temperature superconducting energy storage magnet |
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| CN107564623A (en) * | 2017-07-27 | 2018-01-09 | 华北电力大学 | A kind of Cable-in-conduit conductor based on ReBCO isotropism Superconducting Strands |
| CN108447614A (en) * | 2018-01-11 | 2018-08-24 | 华北电力大学 | A kind of quasi-isotropic high engineering current density high-temperature superconductor conductor |
| CN110246626A (en) * | 2019-07-15 | 2019-09-17 | 华北电力大学 | A kind of Superconducting Strand |
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2019
- 2019-10-14 CN CN201910971076.1A patent/CN110808122A/en active Pending
Patent Citations (4)
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| CN107346681A (en) * | 2017-07-27 | 2017-11-14 | 华北电力大学 | A kind of rutherford's cable based on ReBCO isotropism Superconducting Strands |
| CN107564623A (en) * | 2017-07-27 | 2018-01-09 | 华北电力大学 | A kind of Cable-in-conduit conductor based on ReBCO isotropism Superconducting Strands |
| CN108447614A (en) * | 2018-01-11 | 2018-08-24 | 华北电力大学 | A kind of quasi-isotropic high engineering current density high-temperature superconductor conductor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112562913A (en) * | 2020-09-14 | 2021-03-26 | 核工业西南物理研究院 | Common vertical plane transposition high-temperature superconducting cable and winding transposition method |
| CN114024296A (en) * | 2021-12-01 | 2022-02-08 | 国网江苏省电力有限公司经济技术研究院 | Superconducting current limiter |
| CN114024296B (en) * | 2021-12-01 | 2023-10-20 | 国网江苏省电力有限公司经济技术研究院 | Superconducting current limiter |
| CN114743752A (en) * | 2022-05-18 | 2022-07-12 | 华北电力大学 | High-temperature superconducting energy storage magnet |
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Application publication date: 20200218 |