CN209388780U - Direct current bipolar superconducting cable electrifying conductor - Google Patents
Direct current bipolar superconducting cable electrifying conductor Download PDFInfo
- Publication number
- CN209388780U CN209388780U CN201822053110.0U CN201822053110U CN209388780U CN 209388780 U CN209388780 U CN 209388780U CN 201822053110 U CN201822053110 U CN 201822053110U CN 209388780 U CN209388780 U CN 209388780U
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- China
- Prior art keywords
- insulation layer
- low temperature
- temperature electric
- electric insulation
- superconductor
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- 239000004020 conductor Substances 0.000 title claims abstract description 20
- 238000009413 insulation Methods 0.000 claims abstract description 57
- 239000002887 superconductor Substances 0.000 claims abstract description 35
- 238000005057 refrigeration Methods 0.000 claims abstract description 17
- 210000000988 bone and bone Anatomy 0.000 claims description 9
- 210000003850 cellular structure Anatomy 0.000 claims description 3
- 239000012811 non-conductive material Substances 0.000 claims description 3
- 238000010292 electrical insulation Methods 0.000 abstract 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 9
- 230000005611 electricity Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000005404 monopole Effects 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000446313 Lamella Species 0.000 description 1
- OSOKRZIXBNTTJX-UHFFFAOYSA-N [O].[Ca].[Cu].[Sr].[Bi] Chemical compound [O].[Ca].[Cu].[Sr].[Bi] OSOKRZIXBNTTJX-UHFFFAOYSA-N 0.000 description 1
- BTGZYWWSOPEHMM-UHFFFAOYSA-N [O].[Cu].[Y].[Ba] Chemical compound [O].[Cu].[Y].[Ba] BTGZYWWSOPEHMM-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910021521 yttrium barium copper oxide Inorganic materials 0.000 description 1
Classifications
-
- 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
Landscapes
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
The utility model discloses a direct current bipolar superconducting cable circular telegram conductor, include: the flexible framework (1) is used for forming a first refrigeration working medium channel; a first low temperature electrical insulation layer (2) wound on the flexible skeleton (1); a positive superconductor (3) wound on the first low-temperature electrical insulation layer (2); a second low-temperature electric insulating layer (4) and a third low-temperature electric insulating layer (6) which are sequentially wound on the positive superconductor (3); a microfluidic channel structure (5) disposed between the second low temperature electrically insulating layer (4) and the third low temperature electrically insulating layer (6); a negative superconductor (7) wound on the third low-temperature electrical insulation layer (6); a fourth low-temperature electrical insulation layer (8) wound around the negative superconductor (7); a second refrigeration working medium channel (9) is formed between the fourth low-temperature electric insulation layer (8) and the low-temperature Dewar pipe (10). The utility model discloses direct current bipolar superconducting cable circular telegram conductor's low temperature environment and thermal stability have been improved.
Description
Technical field
The utility model relates to electrical power distribution electro-technical fields more particularly to a kind of energization of DC bipolar hyperconductive cable to lead
Body.
Background technique
High-temperature superconductive cable has many advantages, such as line loss is low, transmission capacity is big, corridor takes up little area, is environmental-friendly, for electricity
Net provides a kind of efficient, compact, reliable, green electric energy transmission mode.Comprehensively consider electric power energy demand sustainable growth, wind
The electric power between new energy accounting rapid increase, different zones such as energy and solar energy shares more strong demand, energy-saving and emission-reduction and ring
The factors such as demand enhances year by year, some areas underground power transmission and distribution corridor has hastened towards saturation are protected in border, can be realized simultaneously efficiently low
The direct supercurrent technology of transmission of electricity of loss and large-capacity power conveying will provide total solution for following power transmission and distribution institute facing challenges
Certainly scheme.
Cable body is as main portions such as its cores, including skeleton, electrical conductor layer, electric insulation layer, liquid nitrogen channel
Part.The Chinese Academy of Sciences's 360 m/10 kA Aluminium projects of electrician, the high-temperature superconductor direct current as the first item in the world towards industrial application
Cable, using monopole transmission of electricity and biliquid nitrogen channel Refrigeration Technique；± 80 kV of 500 m/ of South Korea transmission of electricity project is grid-connected in 2014
Operation, using monopole transmission of electricity and single liquid nitrogen channel Refrigeration Technique；Japan ± 10 kV of 500 m/ transmits electricity project using double
Extremely coaxial transmission of electricity and single liquid nitrogen channel Refrigeration Technique.As it can be seen that the mutual difference of the construction of cable is mainly reflected in two aspects,
Conductor layer polarity is monopole i.e. in unit cable or bipolar, liquid nitrogen channel is single channel or binary channels.
The positive and negative anodes of DC bipolar hyperconductive cable can share cryogenic envelope, therefore more economy, additionally have knot
The advantages such as structure is compact, transimission power density is big.But since superconduction low temperature insulation material is typically all hot non-conductor, in high electricity
Press grade direct current cables in, extremely to support and the two poles of the earth between insulating layer it is very thick, radial heat-transfer effect is by very big shadow
It rings.Especially in the case of transient state, the thermal stability of electrical conductor is reduced.
Utility model content
Technical problem to be solved by the utility model is to provide a kind of direct current for improving electrical conductor thermal stability is double
Pole hyperconductive cable electrical conductor.
In order to solve the above-mentioned technical problem, the utility model provides a kind of DC bipolar hyperconductive cable electrical conductor, comprising:
It is used to form the flexible back bone in the first refrigeration working medium channel；
The first low temperature electric insulation layer being wound on the flexible back bone；
The positive superconductor being wound on the first low temperature electric insulation layer；
The the second low temperature electric insulation layer and third low temperature electric insulation layer being successively wound on the positive superconductor；
Microchannel structure between the second low temperature electric insulation layer and third low temperature electric insulation layer is set；
The cathode superconductor being wound on the third low temperature electric insulation layer；
The 4th low temperature electric insulation layer being wound on the cathode superconductor；
The second refrigeration working medium channel is formed between the 4th low temperature electric insulation layer and cryogenic envelope.
Further, the microchannel structure uses the electrically non-conductive material with cellular structure to be coiled into.
Further, the microchannel structure is web, and the web includes the warp and latitude of orthogonal thereto arrangement
Line.
Further, the diameter or equivalent diameter of the warp and weft are between 1mm-2mm.
Further, the diameter or equivalent diameter of the warp and weft are different, and the difference of the two is 0.5mm.
Further, the flexible back bone and cryogenic envelope are made of bellows or spiral, and corrugated form is U-shaped
Or c-type.
Further, the first low temperature electric insulation layer, the second low temperature electric insulation layer, third low temperature electric insulation layer and the 4th
Low temperature electric insulation layer is coiled into using insulating paper according to the angle and packet stack rate of setting, the first low temperature electric insulation layer, second low
Warm electric insulation layer, third low temperature electric insulation layer and the 4th low temperature electric insulation layer two sides are also wound with conducting paper.
Further, the positive superconductor and cathode superconductor by multilayer superconductive tape or superconducting line according to setting around angle
It is coiled into pitch.
The beneficial effect of the utility model embodiment is: by the second low temperature electric insulation layer and third low temperature electrical isolation
Microchannel structure is introduced between layer, make among positive superconductor and cathode superconductor partially due to there is depositing for refrigeration working medium
In, temperature being declined slightly compared to no microchannel structure, it is equivalent to the low temperature environment for improving superconductor layer, helps to mention
Its high current-carrying capability.Especially in transient process, superconductor fever can be powered by microchannel structure heat dissipation a part
The thermal stability of superconductor is very significantly improved.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of cross section structure schematic diagram of DC bipolar hyperconductive cable electrical conductor of the utility model embodiment.
Fig. 2 is the structural schematic diagram of the low temperature electric insulation layer in the utility model embodiment with microchannel.
Specific embodiment
The explanation of following embodiment be with reference to attached drawing, can be to the particular implementation implemented to example the utility model
Example.The direction and position term that the utility model is previously mentioned, for example, "upper", "lower", "front", "rear", "left", "right", "inner", "
Outside ", " top ", " bottom ", " side " etc. are only direction or position with reference to attached drawing.Therefore, the direction used and position term
It is rather than the limitation to scope of protection of the utility model to illustrate and understand the utility model.
Referring to shown in Fig. 1, the utility model embodiment provides a kind of DC bipolar hyperconductive cable electrical conductor, packet
It includes:
It is used to form the flexible back bone 1 in the first refrigeration working medium channel；
The first low temperature electric insulation layer 2 being wound on the flexible back bone 1；
The positive superconductor 3 being wound on the first low temperature electric insulation layer 2；
The the second low temperature electric insulation layer 4 and third low temperature electric insulation layer 6 being successively wound on the positive superconductor 3；
Microchannel structure 5 between the second low temperature electric insulation layer 4 and third low temperature electric insulation layer 6 is set；
The cathode superconductor 7 being wound on the third low temperature electric insulation layer 6；
The 4th low temperature electric insulation layer 8 being wound on the cathode superconductor 7；
The second refrigeration working medium channel 9 is formed between the 4th low temperature electric insulation layer 8 and cryogenic envelope 10.
Specifically, flexible back bone 1 and cryogenic envelope 10 are ripple struction, and material can be stainless steel or copper, wave
Line form can be U-shaped or c-type.The channel that first refrigeration working medium channel is flowed into generally as refrigeration working medium.
Positive superconductor 3 and cathode superconductor 7 are all made of high temperature superconducting materia production, including but not limited to bismuth-strontium-calcium-copper-oxygen
Superconductive tape or superconducting line based on compound, yttrium barium copper oxide, iron-based high-temperature superconductive body, mgb 2 superconductor etc., are used for
Transmit electric current.Usually being coiled into around angle and pitch according to setting by multilayer superconductive tape or superconducting line.
First low temperature electric insulation layer 2, the second low temperature electric insulation layer 4, third low temperature electric insulation layer 6 and the 4th low temperature electrical isolation
Layer 8 is the insulating paper under low temperature with good insulating performance, for alternate and relatively low current potential to be isolated, according to the angle of setting
Degree and packet stack rate are coiled into.First low temperature electric insulation layer 2, the second low temperature electric insulation layer 4, third low temperature electric insulation layer 6 and the 4th are low
Two side view voltage class height of warm electric insulation layer 8 are wound with conducting paper, and conducting paper is for smooth superconductor material surface
The rough and electric field distortion that may cause.
Microchannel structure 5 is sandwiched in two layers of low-temperature insulation layer --- the second low temperature electric insulation layer 4 and third low temperature electrical isolation
Between layer 6.Traditional bipolar direct supercurrent construction of cable insulating layer be it is continuous, centre filled without microchannel structure 5 Deng
Structure.Again as shown in Fig. 2, microchannel structure 5 has good mechanical strong using web etc. with cellular structure, at low temperature
The electrically non-conductive material of degree is coiled into.By taking web as an example, web is made of warp 51 and weft 52, and warp 51 and weft 52 are in just
Hand over arrangement, the diameter (or being non-positive circular section, be then equivalent diameter, similarly hereinafter) of warp 51 and weft 52 between 1mm-2mm,
But warp 51 is different with 52 diameter of weft, the two diameter difference δ ≈ 0.5mm.Both guaranteed that the overall structure connection of web was strong in this way
Degree also guarantees the smoothness of microchannel.Web is as mechanical support, in the second low temperature electric insulation layer 4 and third low temperature electric
A thin layer space is formd between insulating layer 6, which is connected to outer fluid space, when outer fluid space be filled with cryogenic refrigeration working medium it
Afterwards, cryogenic refrigeration working medium can be also filled in lamella space.In this way, among positive superconductor 3 and cathode superconductor 7 partially due to
There is the presence of refrigeration working medium, temperature is declined slightly compared to no microchannel structure, and being equivalent to improves the low of superconductor layer
Warm environment helps to improve its current-carrying capability.Especially in transient process, superconductor fever can pass through microchannel structure
5 heat dissipation a part, the thermal stability of energization superconductor are very significantly improved.
Above disclosures are merely preferred embodiments of the utility model, the utility model cannot be limited with this certainly
Interest field, therefore equivalent variations made according to the claim of the utility model still fall within the scope of the utility model.
Claims (8)
1. a kind of DC bipolar hyperconductive cable electrical conductor characterized by comprising
It is used to form the flexible back bone (1) in the first refrigeration working medium channel；
The first low temperature electric insulation layer (2) being wound on the flexible back bone (1)；
The positive superconductor (3) being wound on the first low temperature electric insulation layer (2)；
The the second low temperature electric insulation layer (4) and third low temperature electric insulation layer (6) being successively wound on the positive superconductor (3)；
Microchannel structure (5) between the second low temperature electric insulation layer (4) and third low temperature electric insulation layer (6) is set；
The cathode superconductor (7) being wound on the third low temperature electric insulation layer (6)；
The 4th low temperature electric insulation layer (8) being wound on the cathode superconductor (7)；
The second refrigeration working medium channel (9) is formed between the 4th low temperature electric insulation layer (8) and cryogenic envelope (10).
2. DC bipolar hyperconductive cable electrical conductor according to claim 1, which is characterized in that the microchannel structure
(5) it is coiled into using the electrically non-conductive material with cellular structure.
3. DC bipolar hyperconductive cable electrical conductor according to claim 2, which is characterized in that the microchannel structure
It (5) is web, the web includes the warp (51) and weft (52) of orthogonal thereto arrangement.
4. DC bipolar hyperconductive cable electrical conductor according to claim 3, which is characterized in that the warp (51) and latitude
The diameter or equivalent diameter of line (52) are between 1mm-2mm.
5. DC bipolar hyperconductive cable electrical conductor according to claim 4, which is characterized in that the warp (51) and latitude
The diameter or equivalent diameter of line (52) are different, and the difference of the two is 0.5mm.
6. DC bipolar hyperconductive cable electrical conductor according to claim 1, which is characterized in that the flexible back bone
(1) it is made with cryogenic envelope (10) of bellows or spiral, corrugated form is U-shaped or c-type.
7. DC bipolar hyperconductive cable electrical conductor according to claim 1, which is characterized in that first low temperature electric is exhausted
Edge layer (2), the second low temperature electric insulation layer (4), third low temperature electric insulation layer (6) and the 4th low temperature electric insulation layer (8) are using insulation
Paper is coiled into according to the angle and packet stack rate of setting, the first low temperature electric insulation layer (2), the second low temperature electric insulation layer (4), third
Low temperature electric insulation layer (6) and the 4th low temperature electric insulation layer (8) two sides are also wound with conducting paper.
8. DC bipolar hyperconductive cable electrical conductor according to claim 1, which is characterized in that the anode superconductor
(3) and cathode superconductor (7) by multilayer superconductive tape or superconducting line being coiled into around angle and pitch according to setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822053110.0U CN209388780U (en) | 2018-12-07 | 2018-12-07 | Direct current bipolar superconducting cable electrifying conductor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822053110.0U CN209388780U (en) | 2018-12-07 | 2018-12-07 | Direct current bipolar superconducting cable electrifying conductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209388780U true CN209388780U (en) | 2019-09-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109559850A (en) * | 2018-12-07 | 2019-04-02 | 深圳供电局有限公司 | Direct current bipolar superconducting cable electrifying conductor |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109559850A (en) * | 2018-12-07 | 2019-04-02 | 深圳供电局有限公司 | Direct current bipolar superconducting cable electrifying conductor |
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