JPH01231217A - Superconducting cable for alternate current - Google Patents
Superconducting cable for alternate currentInfo
- Publication number
- JPH01231217A JPH01231217A JP63053750A JP5375088A JPH01231217A JP H01231217 A JPH01231217 A JP H01231217A JP 63053750 A JP63053750 A JP 63053750A JP 5375088 A JP5375088 A JP 5375088A JP H01231217 A JPH01231217 A JP H01231217A
- Authority
- JP
- Japan
- Prior art keywords
- superconducting
- superconducting cable
- current
- material layer
- cables
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004020 conductor Substances 0.000 claims abstract description 44
- 239000000463 material Substances 0.000 claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 238000009413 insulation Methods 0.000 abstract description 2
- 239000002887 superconductor Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 230000000087 stabilizing effect Effects 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 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
Abstract
Description
【発明の詳細な説明】
［産業上の利用分む１
本発明は、交流損失を低減Ｊる交流用超１脣ケーフルに
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Applications 1] The present invention relates to a super single-length cable for AC use that reduces AC loss.
［従来技術１
第３図９１従来の超電導ケーブルの例を示した乙のであ
る。１図承のように従来の超電導ケーブルは、超電導物
ｖ１居１と銅等のσ属からなる安定化層２とが接合され
た複合超Ｘｔ４チー１３をその超電導物質層１を外向さ
にして半径ｒ゛の管状に形成した内導体４と、超電導物
質層５と銅等の金属からなる安定化層６とが接合された
摺合超電導テープ７をその超電導物質層５を内向きにし
て半径Ｒ（＞ｒ）の管状に形成して内導体４を同軸状に
包囲してなる外導体８と、内導体４の内側に形成された
冷媒通路９と、内導体４と外導体８との間に介在された
絶縁層１０と、外導体８の外周に冷媒通路１１を形成す
るようにして同軸状に配置されたバイブ１２と、バイブ
１２の外周に同軸状に配置された断熱層１３と、断熱層
１３を包囲して同軸状に配置されたバイブ１４とで構成
されていた。この場合、安定化層２，６は、何かの原因
により一時的に超電導状態が破れた時、電流を逃１バイ
パスの役割をちっている。[Prior Art 1] Figure 3 shows an example of a conventional superconducting cable. As shown in Fig. 1, a conventional superconducting cable consists of a composite superconducting material 13 in which a superconducting material 1 and a stabilizing layer 2 made of σ material such as copper are bonded, with the superconducting material layer 1 facing outward. A sliding superconducting tape 7 in which an inner conductor 4 formed in a tubular shape with a radius r', a superconducting material layer 5, and a stabilizing layer 6 made of a metal such as copper are bonded is arranged with a radius R with the superconducting material layer 5 facing inward. An outer conductor 8 formed into a tubular shape (>r) and coaxially surrounding the inner conductor 4, a refrigerant passage 9 formed inside the inner conductor 4, and a space between the inner conductor 4 and the outer conductor 8. an insulating layer 10 interposed between the outer conductor 8, a vibrator 12 coaxially arranged to form a refrigerant passage 11 on the outer periphery of the outer conductor 8, and a heat insulating layer 13 coaxially arranged around the outer periphery of the vibrator 12; A vibrator 14 was arranged coaxially surrounding a heat insulating layer 13. In this case, the stabilizing layers 2 and 6 play the role of a bypass, allowing current to escape when the superconducting state is temporarily broken for some reason.
［発明が解決しようとりる課題］
しかしながら、このような超電導ケーブルて゛は、交流
用として使用した場合、交流損失が発生する。[Problems to be Solved by the Invention] However, when such a superconducting cable is used for alternating current, alternating current loss occurs.
交流１ｔ１失により発生する熱量は、超電４物質にとっ
てりＹましくなく、冷Ｌ１の規模を大きくし、設廂コス
１〜を大きくしてしまう問題点がある。The amount of heat generated by the loss of AC 1t1 is not good for the four superelectric materials, and there is a problem in that it increases the scale of the cold L1 and increases the installation cost 1~.
木ｆｌ明の［１的は、交流損失を０（減できる交流用超
電導ケーブルを提供１Ｊることにある。The first objective of Thu fl Ming is to provide an AC superconducting cable that can reduce AC loss to 0.
［課題を解決するための手段］
上記の目的を達成するための本発明の詳細な説明すると
、本光明は超電導物質層を有する内導体と金属或いは一
部が超電導物質図よりなる外導体とが同軸状に配置され
てなる超電導ケーブル本体が、その電流相数の整数倍の
本数で・まとめて（を成され、前記各超電導ケーブル本
体はその電流位相が隣り合う前記超電導ケーブル本体と
異なるように配置されていることを特徴とする。[Means for Solving the Problems] To explain in detail the present invention for achieving the above object, the present invention provides a method in which an inner conductor having a superconducting material layer and an outer conductor made of a metal or a part of a superconducting material layer are provided. The superconducting cable bodies arranged in a coaxial manner are assembled together in a number that is an integral multiple of the number of current phases, and each superconducting cable body has a current phase different from that of the adjacent superconducting cable bodies. It is characterized by being located.
［作用］
このようにすると、超電４物′ｔ′ｉ層の表面電流密度
が低下し、交流ｕ１失を小さくツることがぐきる。[Function] In this way, the surface current density of the superelectric 4 material 't'i layer is reduced, and the loss of AC u1 can be reduced.
また、ｈいの超電導ケーブル本体の間の…Ｗの漏れにつ
いてはｎいに打ら消寸ため、外導体の安定化層に発生す
る渦電流損失を低下させることができる。In addition, since the leakage of W between the superconducting cable bodies can be minimized, the eddy current loss generated in the stabilizing layer of the outer conductor can be reduced.
［実施例］
以下、本発明を３相交流送電用の超電導ケーブルに適用
した第１図乃至第２図に示寸実施例にもとづいて詳細に
説明する。なＪ５、ｔｆｆｆ ｉボした第３図と対応す
る部分には同一？Ｊ号をっけて示している。[Example] Hereinafter, the present invention will be described in detail based on an example shown in FIGS. 1 and 2 in which the present invention is applied to a superconducting cable for three-phase AC power transmission. J5, tfff Is the part corresponding to the part shown in Figure 3 the same? It is indicated by the number J.
本実施例の交流用超電導ケーブルは、超電導物質層１と
金属からなる安定化層２とが接合された複合超電導７−
７３で管状に形成された内導体４と、該内導体４の内部
に形成されている冷媒通路つと、該内導体４の外周に同
軸状に設けられＣいる絶縁層１０と、該絶縁層１０の外
周に同軸状に金属ワイ＼７−１５を撚り合せて形成され
た外導体８とからなる超電導ケーブル本体１６を複数状
有する。The AC superconducting cable of this embodiment has a composite superconducting 7-
An inner conductor 4 formed in a tubular shape at 73, a refrigerant passage formed inside the inner conductor 4, an insulating layer 10 provided coaxially around the outer periphery of the inner conductor 4, and the insulating layer 10. It has a plurality of superconducting cable bodies 16 each including an outer conductor 8 formed by coaxially twisting metal wires 7-15 around the outer periphery of the cable.
これら超電導ケーブル本体１６は、Ｕ相、■相。These superconducting cable bodies 16 are U phase and ■ phase.
Ｗ相加としてご３条を１ユニツトとして断面３角形状に
配置されている。これら１ユニツ（・の超電導ケーブル
本体１６は、撚り合わされる場合と、撚り合わされない
場合とがある。また、各超電導ケーブル本体１６の表面
は絶縁層で絶縁することが好ましい。また、これら超電
導ケーブル本体１６は、Ｕ相、■相、Ｗ相の順に反部も
１方向に配′ＩＪ１１されている。他のユニツ］〜も同
様に構成されている。The W addition is arranged in a triangular cross section with three strips as one unit. The superconducting cable bodies 16 of these units may or may not be twisted together. Also, the surface of each superconducting cable body 16 is preferably insulated with an insulating layer. The main body 16 has opposite portions arranged in one direction in the order of U-phase, ■-phase, and W-phase.Other units]~ are constructed in the same manner.
ユニット相互間でも異なる相の超電導ケーブル本体１６
が隣り合うように配置がなされている。このような各ユ
ニット各ま図示のように断面円形状に配列され、その中
心及び隣接するＪｆｌ Ｘｆ導ケーブル本体１６の間に
冷媒通路１７が形成され、且つ断面円形配置の各ユニツ
ｌ−の外周には一括してバイブ１２．断熱層１３．バイ
ブ１４が同軸状に設置ノられている。円形に配置された
これら各ユニツ］・は、撚り合わされる場合と、撚り合
わされない場合とがある。Superconducting cable body 16 with different phases even between units
are arranged so that they are next to each other. Each of these units is arranged in a circular cross-section as shown in the figure, and a refrigerant passage 17 is formed between the center and the adjacent Jfl Vibrator 12. Heat insulation layer 13. A vibrator 14 is installed coaxially. These units arranged in a circle may or may not be twisted together.
この場合、超電導物質層１は、例えばビスマス、ストロ
ンチウム、カルシウム、銅の酸化物、或いはイツトリウ
ム、バリウム、銅の酸化物等で形成される。外導体８の
金属１ツイヤ−１５は例えば銅で形成される。安定化層
２に対する超電導物質層１の形成は、例えばスパッタリ
ングで行・）ことができる。In this case, the superconducting material layer 1 is formed of, for example, oxides of bismuth, strontium, calcium, or copper, or oxides of yttrium, barium, or copper. The metal wire 15 of the outer conductor 8 is made of copper, for example. The superconducting material layer 1 can be formed on the stabilizing layer 2 by, for example, sputtering.
このような交流用超電導ケーブルにおける１ ７ｎ当り
の交流損失は、以下の式で表ねりことができる。The AC loss per 17n in such an AC superconducting cable can be expressed by the following formula.
Ｐ＝（２Ｊ２／３） ・ μｏ ・ （ｌｏ ／Ｐ２
）３ ・Ｐβ（ｔ’／Ｊｏ） ・・・
（１）ただし、
ｐ ：ｉｍ当りの交流損失（Ｗ／ｍ）μ０ ：透…率
（ｌ−１／ ｍ ）
１ｏ 二通電電流（Ａ＞
Ｐ（；ペリメータ
（この場合は、周の高さ）（ｍ）
１ｏ／Ｐｊ２：表面電２Ｉ！を密度（Ａ／ｍ）Ｊ ：超
ｆｆ１２９導体層の臨界電流（Ａ／Ｔｌ１）「 ：交流
周波数（Ｈ７）
さて、交流用超電導ケーブルとして使用する場合、μｏ
、ｆ 、Ｊｃは一定と考えてよく、これらを一定とす
ると、
Ｐ＝ｋ ’ （Ｉｏ ３／Ｐ ２） ＝１２
）ρ
ただし、ｋ：定数
となる。P=(2J2/3) ・ μo ・ (lo /P2
)3 ・Pβ(t'/Jo)...
(1) However, p: AC loss per im (W/m) μ0: Transmittance (l-1/m) 1o Two currents (A>P(; Perimeter (in this case, circumferential height)) (m) 1o/Pj2: Surface electric charge 2I! Density (A/m) J: Critical current of super ff129 conductor layer (A/Tl1): AC frequency (H7) Now, when used as an AC superconducting cable, μo
, f, and Jc can be considered constant, and if these are constant, then P=k' (Io 3/P 2) = 12
)ρ where k: is a constant.
第３図のような従来構造の超電導ケーブルの場合、３相
通電では３条のケーブルが必要であるから、各相に］（
Ａ）の電流が流れる時の交流１０失をＰ＋（Ｗ／ｍ）と
すると、下記のようになる。In the case of a superconducting cable with a conventional structure as shown in Figure 3, three cables are required for three-phase energization, so for each phase]
If the AC 10 loss when the current A) flows is P+ (W/m), then it is as follows.
Ｐ＋ ＝３ （［ｋ−１３／ （２πＲ’） ２］ ＋
［ｋ−１３，／（２πｒ）’］）
＝３（［ｋＭ／（２π）２］・
［（１／Ｒ’ ）＋ （１／ｒ″＞１１・・・（３）
ただし、
ｒ：内導体４０半径（Ｉｌ）
１（：外導体８の半径（ｍ）
一方、第１図に示寸ような本発明の交流用超電導ケーブ
ルにおいて、同一の容量を得ようとした場合、各相に１
／ｎ（△）の電流を流せば良い。P+ =3 ([k-13/ (2πR') 2] +
[k-13,/(2πr)']) = 3([kM/(2π)2]・[(1/R')+ (1/r''>11...(3) However, within r: Radius of conductor 40 (Il) 1 (: radius of outer conductor 8 (m)) On the other hand, in the AC superconducting cable of the present invention as shown in FIG.
It is sufficient to flow a current of /n(△).
ここで、ｎはユニット数である。各ユニットでは内導体
４は全部で３ ｒ１個ある。Here, n is the number of units. In each unit, there are a total of 3 r1 inner conductors 4.
Ｐ２−［３ｎｋ （１／ｎ） ３］ ／（４π２ｒ ２
） ・・・（４）となる。ここで、ｒｏは
内導体４の半径（ｍ）である。P2-[3nk (1/n) 3] /(4π2r 2
) ...(4). Here, ro is the radius (m) of the inner conductor 4.
従って、ｆ３）、 （４１式より、下式を得ることがで
きる。Therefore, f3), (From equation 41, the following equation can be obtained.
Ｐ２ ／ＰＩ −（（ｒ２Ｒ２）／ ［（ｒ２＋Ｒ２）
・ ｒ゛２］） ・ （１／ｎ２ ）・・・（５）
ここで、同じ電流容量を得るために本発明で使用する超
電導内導体４の使用帛を、従来の第３図に示す超？［ケ
ーブルと同じにする。これは超電導物質層１に流れる電
流密麿を同じにするためである。つまり、超電導物質層
１の厚さをｔとし、従来と本発明の超電導内導体４を同
等とすると、３×２πｒｔ＝３ｎｘ２πｒｔ
となり、
ｒ／ｒｏ＝ｎ ・・・（
６）を１りる。（６）式を（５）式に代入すると、Ｐ２
／ＰＩ ＝Ｒ２／ （ｒ２＋Ｒ２）−１／ （１＋
（ｒ／Ｒ）） ・・・（７）となる。ここで、従来構
造のｒ、Ｒは大きく、ｒ−１１と仮定できるから、（７
）式よりＰ ２ ／ Ｐ ＋ ＝ １ ／ ２
・・・（８）となる。つまり、本発明によ
り、同一の電流容量を得る交流用超電導グープルの発生
交流損失は従来の約１／２となることがわかる。P2 /PI −((r2R2)/ [(r2+R2)
・r゛2]) ・(1/n2)...(5) Here, in order to obtain the same current capacity, the method of using the superconducting inner conductor 4 used in the present invention is compared to the conventional superconducting inner conductor 4 shown in FIG. ? [Make it the same as the cable. This is to make the current density flowing through the superconducting material layer 1 the same. In other words, if the thickness of the superconducting material layer 1 is t, and the conventional and present superconducting inner conductors 4 are equivalent, then 3×2πrt=3nx2πrt, and r/ro=n...(
6). Substituting equation (6) into equation (5), we get P2
/PI =R2/ (r2+R2)-1/ (1+
(r/R)) ...(7). Here, r and R in the conventional structure are large and can be assumed to be r-11, so (7
) From the formula, P 2 / P + = 1 / 2
...(8). In other words, it can be seen that according to the present invention, the AC loss generated in the AC superconducting group that obtains the same current capacity is about 1/2 that of the conventional one.
また、本発明は電流の相変化を利用し、ｎいに磁束を打
ち消す配置としたため、あえて外導体８に超電導材を使
用する必要はへいが、第２図のような構造で超電導材を
使用すると、外導体８で磁気遮蔽が図られて、より一層
交流損失を低減できる。この場合、超電導外導体８を形
成する複合超電導テープ３のターン間の隙間から磁束が
ちれるようなことがあっても。各相の磁界の打ち消し合
い作用により、もれを打ち消すことができる。In addition, since the present invention utilizes the phase change of the current and is arranged to cancel the magnetic flux, there is no need to intentionally use a superconducting material for the outer conductor 8, but it is possible to use a superconducting material with the structure shown in Then, magnetic shielding is achieved by the outer conductor 8, and AC loss can be further reduced. In this case, even if the magnetic flux drifts from the gaps between the turns of the composite superconducting tape 3 forming the superconducting outer conductor 8. Leakage can be canceled by the canceling effect of the magnetic fields of each phase.
第３図に示す従来構造と第１図に示ず本発明構造のもの
について、下記のような具体例について比較したところ
、下記のような結果が得られた。When the conventional structure shown in FIG. 3 and the structure of the present invention not shown in FIG. 1 were compared in the following specific examples, the following results were obtained.
従来構造
内導体の直ｔｌ ： ３２０調（ｒ−１６０ｍ＋ ）
外導体の直径： ３！１０−３９０＋ｓ （Ｒ＝
１７５〜１９０Ｍ）
最外径 ：約５００１１１１
とし、０．Ｉ Ｔｅ５ｒａにつきＪ ｃ −１０’ （
Ａ／ ｃｍ ）の超電導材を使用すると、発生交流損失
は１．０７ （Ｗ／ｍ）・相となる。ただし、このとき
の超電導物質層１の厚さは０．１＃ｌｆｆ１、安定化層
２は銅でその厚さは１＃とじた。Direct TL of conductor in conventional structure: 320 tone (r-160m+)
Diameter of outer conductor: 3!10-390+s (R=
175~190M) Outermost diameter: approximately 5001111 mm, 0. J c -10' per I Te5ra (
When using a superconducting material with A/cm ), the generated AC loss will be 1.07 (W/m) phase. However, the thickness of the superconducting material layer 1 at this time was 0.1#lff1, and the stabilizing layer 2 was made of copper and had a thickness of 1#.
本発明構造
内導体の直径： ５．３ｍｔｓ （ｒ ｃ−２，６５
ｔｎｍ ）外導体（銅線撚り合せ）の直径：９３間最外
直径 ：約５００Ｍ
ユニット数 二〇
とすると、従来構造とほぼ同等の電流容量がとれる。こ
のとき、０．Ｉ Ｔｅ５ｒａにつきＪｃ＝１０４ （Ａ
／ｃｄ）の超電導材を使用すると、発生交流損失は０．
６（Ｗ／ＩＩ） ・相となる。従って、従来構造と本発
明構造とを比較すると、
（０，６ｘ３）／（１，０７ｘ３）−０，５６すなわら
、発生交流に％失を本発明ににれば従来に比べて５６％
と小さくすることができた。Diameter of the conductor in the structure of the present invention: 5.3 mts (r c-2,65
tnm) Diameter of outer conductor (copper wire strands): 93mm Outermost diameter: approx. 500M If the number of units is 20, the current capacity is almost the same as that of the conventional structure. At this time, 0. I Jc=104 per Te5ra (A
/cd), the generated AC loss is 0.
6 (W/II) - Phase. Therefore, when comparing the conventional structure and the structure of the present invention, (0,6x3)/(1,07x3)-0,56, that is, if the present invention has a % loss in generated AC, it is 56% compared to the conventional structure.
I was able to make it smaller.
なお、上記実施例では、酸化物系の超゛市導材を使用し
た場合について説明したが、本発明は上記実施例に限定
されるものではなく、金属系の超電１３Ｈの場合にも同
様に適用できることは勿論である。In addition, although the above embodiment describes the case where an oxide-based superconducting material is used, the present invention is not limited to the above embodiment, and the same applies to the case of metal-based superconductor 13H. Of course, it can be applied to
［発明の効果１
以上説明したＪ、うに本発明に係る交流用超電導ケーブ
ルは、超電導物質層を有する内導体と金属或いは一部が
超電導物質層よりなる外導体とが同軸状に配置されてな
る超電導つ゛−プル本体が、その電流相数の整数倍の本
数でまとめて構成されているので、超電導物質層の表面
電流密度を小さくでき、従って、交流損失を低減するこ
とができる。[Effect of the invention 1] The AC superconducting cable according to the present invention described above has an inner conductor having a superconducting material layer and an outer conductor made of metal or a portion of which is made of a superconducting material layer, which are arranged coaxially. Since the superconducting twin-pull main body is configured with a number that is an integral multiple of the number of current phases, the surface current density of the superconducting material layer can be reduced, and therefore, AC loss can be reduced.
また、各超電導クープル本体はその電流位相が隣り合う
前記超電導クープル本体と異なるように配置されている
ので、Ｕいの超電導ケーブル本体の間に生じる磁界の漏
れを打ら消すことができ、外導体の交流損失を低減する
ことができる。In addition, since each superconducting couple main body is arranged so that its current phase is different from that of the adjacent superconducting couple main bodies, leakage of the magnetic field generated between the U-shaped superconducting cable bodies can be canceled out, and the outer conductor AC loss can be reduced.
第１図は本発明に係る交流用超電導ケーブルの一実流例
の横断面図、第２図は本実施例で使用している複合超電
導テープの横断面図、第３図は従来の超電導ケーブルの
横断面図である。
１・・・超電導物質層、２・・・安定化層、３・・・複
合超電導テープ、４・・・内導体、８・・・外導体、１
６・・・超電導ケーブル本体。
“−代と）
第１ 図
第３図
手続ネ市正書 （自発）
１、事件の表示 特願昭６３−５３７５０号２、発明
の名称
交流用超電導ケーブル
３、補正をする者
事件との関係 特許出願人
（５２９）古河電気工業株式会社
４、代理人
東京都港区新橋４−３１−６ 文山ビル６階松本特許
事務所（電話４３７−５７８１番）明細書の発明の詳細
な説明の欄
６、補正の内容
明細１の第９頁第１行の「わかる。」の後に改行して下
記の文を挿入１−る。
第３図に承り従来の超電導ケーブルで使用した超７ｔｉ
ｎ ｌ、（を、内−り体４の分だりてなく、外導体８
の分乙、第１図に承り本発明の交流用超電導ケーブルの
内々体４用に全部使用覆る方法がある。これにＪ、れば
、以下に示す如く、同一電流容量を１！７るのに同一の
超電導材の使用品で、その発生交流１０失は従来の１／
８以下どなり、効ψ的である。本発明は、外導体８とし
て必ずしも超電導材を使用しＱ ＜ ’（ｂよいため、
このようなことが可能となる。
この例の場合、構造は第１図と同様であるが、超電導ケ
ーブル本体１Ｇの径及び全体の最外径は約２１８近く人
きくなるが、二［夫すれば径を小さく・Ｊることし可能
ぐある。
この揚台の発生交流に１失の４算は、（５）式までは前
述した例と同じである。（６）式の代りに３Ｘ（２πｒ
ｔ ＋−２πＲｔ）−３日×２πｒ”ｃｔとなる。た
だし、しは超電導物質層の厚さである。
従って、
ｒ ｔ−Ｒ＝ ｎ ｒ ・・・（９）に
こで、
ｒ−Ｒ・ ・ ・ （１０）
とＪると、（５）式、（９）式、 （１０）式よりＰ
２ ／ Ｐ １＊ １ ／ ８ ・・・（１１）どな
る。つまり、同−電流容部を（！するのに５１生交流１
０失は１／８以Ｆとなり、非出に効・Ｉ的（・ある。
」
以 ［Fig. 1 is a cross-sectional view of an actual flow example of an AC superconducting cable according to the present invention, Fig. 2 is a cross-sectional view of a composite superconducting tape used in this embodiment, and Fig. 3 is a cross-sectional view of a conventional superconducting cable. FIG. DESCRIPTION OF SYMBOLS 1... Superconducting material layer, 2... Stabilizing layer, 3... Composite superconducting tape, 4... Inner conductor, 8... Outer conductor, 1
6...Superconducting cable body. 1. Figure 3. Procedural official document (spontaneous) 1. Indication of the case Japanese Patent Application No. 63-53750 2. Name of the invention AC superconducting cable 3. Person making the amendment Relationship with the case Patent applicant (529) Furukawa Electric Co., Ltd. 4, agent 6th floor, Bunzan Building, 4-31-6 Shinbashi, Minato-ku, Tokyo Matsumoto Patent Office (telephone number 437-5781) Detailed description of the invention in the specification 6. Insert the following sentence on a new line after "I understand." in the first line of page 9 of Specification of Amendment 1. Super 7ti used in conventional superconducting cable as shown in Figure 3
n l, (not for the inner conductor 4, but for the outer conductor 8
According to FIG. 1, there is a method of completely covering the internal body 4 of the AC superconducting cable of the present invention. If this is J, as shown below, if the same current capacity is 1!7 but the same superconducting material is used, the generated AC 10 loss is 1/1/2 of the conventional one.
8 or less, it is effective. In the present invention, a superconducting material is not necessarily used as the outer conductor 8, and since Q <'(b is good,
This becomes possible. In the case of this example, the structure is the same as that shown in Fig. 1, but the diameter of the superconducting cable body 1G and the overall outermost diameter are approximately 218 cm. It's possible. The four calculations of 1 loss in the AC generated by the platform are the same as in the example described above up to equation (5). Instead of equation (6), 3X(2πr
t + -2πRt) - 3 days x 2πr"ct. However, is the thickness of the superconducting material layer. Therefore, r t-R = n r ... (9) Here, r-R・ ・ ・ (10) and J, then from equations (5), (9), and (10), P
2 / P 1 * 1 / 8 ... (11) Howl. In other words, to make the same current capacity (!), 51 raw AC 1
0 loss becomes 1/8 or more F, and it is effective for non-appearance.
Claims (1)
物質層よりなる外導体とが同軸状に配置されてなる超電
導ケーブル本体が、その電流相数の整数倍の本数でまと
めて構成され、前記各超電導ケーブル本体はその電流位
相が隣り合う前記超電導ケーブル本体と異なるように配
置されていることを特徴とする交流用超電導ケーブル。A superconducting cable main body is formed by coaxially disposing an inner conductor having a superconducting material layer and an outer conductor made of a metal or a part of the superconducting material layer, the number of which is an integral multiple of the number of current phases, and the above-mentioned An AC superconducting cable characterized in that each superconducting cable body is arranged so that its current phase is different from that of the adjacent superconducting cable bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63053750A JPH01231217A (en) | 1988-03-09 | 1988-03-09 | Superconducting cable for alternate current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63053750A JPH01231217A (en) | 1988-03-09 | 1988-03-09 | Superconducting cable for alternate current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01231217A true JPH01231217A (en) | 1989-09-14 |
Family
ID=12951485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63053750A Pending JPH01231217A (en) | 1988-03-09 | 1988-03-09 | Superconducting cable for alternate current |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01231217A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000031754A2 (en) * | 1998-11-20 | 2000-06-02 | Nkt Research Center A/S | A method for constructing a superconducting multiphase cable comprising n phases |
| JP2015216735A (en) * | 2014-05-08 | 2015-12-03 | 住友電気工業株式会社 | Superconducting cable and superconducting cable line |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5311077B2 (en) * | 1973-03-20 | 1978-04-19 |
-
1988
- 1988-03-09 JP JP63053750A patent/JPH01231217A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5311077B2 (en) * | 1973-03-20 | 1978-04-19 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000031754A2 (en) * | 1998-11-20 | 2000-06-02 | Nkt Research Center A/S | A method for constructing a superconducting multiphase cable comprising n phases |
| WO2000031754A3 (en) * | 1998-11-20 | 2000-10-05 | Nkt Res Center As | A method for constructing a superconducting multiphase cable comprising n phases |
| US6684486B1 (en) | 1998-11-20 | 2004-02-03 | Nkt Research Center A/S | Method for constructing a superconducting multiphase cable comprising N phases |
| US7735212B1 (en) | 1998-11-20 | 2010-06-15 | Nkt Cables Ultera A/S | Superconducting multiphase cable comprising N phases and method of constructing the cable |
| JP2015216735A (en) * | 2014-05-08 | 2015-12-03 | 住友電気工業株式会社 | Superconducting cable and superconducting cable line |
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