JPH01198226A - Superconduction current limiter - Google Patents
Superconduction current limiterInfo
- Publication number
- JPH01198226A JPH01198226A JP63019516A JP1951688A JPH01198226A JP H01198226 A JPH01198226 A JP H01198226A JP 63019516 A JP63019516 A JP 63019516A JP 1951688 A JP1951688 A JP 1951688A JP H01198226 A JPH01198226 A JP H01198226A
- Authority
- JP
- Japan
- Prior art keywords
- superconducting
- current limiter
- superconducting current
- unit
- mechanical strength
- 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
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 abstract 2
- 239000002887 superconductor Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- -1 YBa Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000005292 diamagnetic effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
- H02H9/023—Current limitation using superconducting elements
-
- 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】
〔発明の目的〕
（産業上の利用分野）
この発明は酸化物超電導体を用いた超電導限流装置に関
する。Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention relates to a superconducting current limiting device using an oxide superconductor.
（従来の技術）
超電導体の電力機器への応対に関しては比較的古くから
検討されており、最近では、交流用超電導線の開発と相
俟って、変圧器など交流電気機器への応用研究も進んで
いる。しかし、実用化には様々な技術的な問題点がある
。(Conventional technology) The application of superconductors to power equipment has been studied for a relatively long time, and recently, along with the development of AC superconducting wires, research into applying superconductors to AC electrical equipment such as transformers has also begun. It's progressing. However, there are various technical problems in putting it into practical use.
これは、従来のＮｂＴｉやＮｂ：ｌＳｎのような液体ヘ
リウムによる冷却を前提とした超電導材料を用いた機器
が極低温での冷凍という極限技術を必要とすることが、
経済性、信頼性の面で実用化の妨げとなっていたことが
大きな要因の一つである。This is because conventional devices using superconducting materials such as NbTi and Nb:lSn, which are designed to be cooled by liquid helium, require the extreme technology of freezing at extremely low temperatures.
One of the major factors was that economic efficiency and reliability were obstacles to practical application.
ところが、最近酸化物系高温超電導体開発が急速に進み
、ＹＢａ、 Ｃｕ、 ｏ、−Ｘなど液体窒素温度で電気
抵抗零、完全反磁性という超電導体としての特性を示す
物質の発見が各所で報告されている。However, recently, the development of oxide-based high-temperature superconductors has progressed rapidly, and various places have reported the discovery of substances such as YBa, Cu, O, and -X that exhibit the characteristics of superconductors, such as zero electrical resistance and complete diamagnetic properties at liquid nitrogen temperatures. has been done.
このような高温超電導材を利用した場合、液体窒素を冷
媒として使うことが出来るので、冷媒自身のコスト低減
は勿論、冷凍技術が格段に容易になり、経済性のみなら
ず、信頼性の高い機器が得られることになり、超電導発
電機のほか、超電導変圧器、超電導送電線等電力機器へ
の応用も急速に進むことが期待される。When such high-temperature superconducting materials are used, liquid nitrogen can be used as a refrigerant, which not only reduces the cost of the refrigerant itself, but also makes refrigeration technology much easier, making it not only economical but also highly reliable equipment. As a result, it is expected that in addition to superconducting generators, applications in power equipment such as superconducting transformers and superconducting power transmission lines will rapidly advance.
超電導送電線としては、超電導変電所と超電導ケーブル
を接続し、負荷にエネルギーを供給する方式が考えられ
る。この様な超電導機器は負荷側の−線地絡や短絡等の
事故が生じ加熱すると超電導状態に復帰するのに時間が
かかるため事故時の温度上昇を抑える限流装置が必要に
なる。A possible method for superconducting power transmission lines is to connect superconducting substations and superconducting cables to supply energy to loads. In such superconducting equipment, if an accident such as a negative line ground fault or short circuit occurs on the load side and it heats up, it takes time to return to the superconducting state, so a current limiting device is required to suppress the temperature rise in the event of an accident.
（発明が解決しようとする課題）
超電導限流装置としては、酸化物超電導材料を絶縁板上
にインダクタンスが少なくなるよう無誘導構成にするこ
とが考えられている。特に、高電圧大容量系統に使用さ
れる超電導限流器の場合、絶縁板上に構成された超電導
限流器ユニットを直列あるいは並列にして電流容量及び
絶縁性能を保持するようにしている。この場合、各ユニ
ットを接続する場合、超電導材料のみで構成した場合、
機械的強度が不十分となるおそれがある。したがって、
定常電流のみならず系統の一線地絡や短絡等の事故が生
じた場合の短絡電流による機械力にも耐える構成が必要
になる。(Problems to be Solved by the Invention) As a superconducting current limiting device, it has been considered to use an oxide superconducting material on an insulating plate in a non-inductive configuration so as to reduce inductance. In particular, in the case of a superconducting current limiter used in a high-voltage, large-capacity system, superconducting current limiter units configured on an insulating plate are connected in series or in parallel to maintain current capacity and insulation performance. In this case, when connecting each unit, when composed only of superconducting materials,
Mechanical strength may be insufficient. therefore,
It is necessary to have a configuration that can withstand not only steady current but also mechanical force due to short-circuit current in the event of an accident such as a line-to-ground fault or short circuit in the system.
この発明はこのような問題点を解決するために提案され
たものであり超電導限流器において、コンパクトで信頼
性の高い超電導限流装置を得ることを目的としている。The present invention has been proposed to solve these problems, and an object of the present invention is to obtain a compact and highly reliable superconducting current limiter in a superconducting current limiter.
（課題を解決するための手段）
本発明の超電導限流装置は、絶縁板上に構成した超電導
限流器ユニットにおいて各ユニットとの接続部分を常電
導金属とし、超電導線と常電導線の接続は超電導線の断
面積より広い面積で接続することによって接続部分の信
頼性を向上する様にしたものである。(Means for Solving the Problems) The superconducting current limiter of the present invention has a superconducting current limiter unit configured on an insulating plate, in which the connecting portions with each unit are made of a normal conducting metal, and the connection between the superconducting wire and the normal conducting wire. The reliability of the connected portion is improved by connecting the wire over an area larger than the cross-sectional area of the superconducting wire.
（作 用）
本発明の超電導限流装置においては、超電導限流器ユニ
ットの各ユニット接続部を常電導金属として常電導金属
同士の接続とすることにより、機械的強度を向上させ、
各ユニットの接続を容易にしたものである。(Function) In the superconducting current limiter of the present invention, the mechanical strength is improved by making each unit connection part of the superconducting current limiter unit a normal conducting metal and connecting normal conducting metals to each other.
This makes it easy to connect each unit.
（実施例）
以下、本発明の超電導限流装置の一実施例を図面によっ
て詳細に説明する。(Example) Hereinafter, an example of the superconducting current limiting device of the present invention will be described in detail with reference to the drawings.
第１図は超電導限流装置の構成を示す図である。FIG. 1 is a diagram showing the configuration of a superconducting current limiting device.
第１図において超電導限流装置１は液体窒素内に超電導
限流器ユニット２を直列または、並列に接続して構成さ
れている。超電導限流器ユニット２は第２図に示す様に
超電導線１０を無誘導となるよう絶縁板１１上に配置さ
れ、その端部は常電導金属１３ａ、 １３ｂとして超電
導線１２ａ、 １２ｂと接続するようにしている。また
、その接続部分１２ａ、 １２ｂの断面積は超電導線１
０の一般部分の断面積より大きくなるようにしている。In FIG. 1, a superconducting current limiter 1 is constructed by connecting superconducting current limiter units 2 in series or in parallel in liquid nitrogen. As shown in FIG. 2, the superconducting current limiter unit 2 is arranged on an insulating plate 11 so that the superconducting wire 10 is not induced, and its ends are connected to the superconducting wires 12a, 12b as normal conducting metals 13a, 13b. That's what I do. In addition, the cross-sectional area of the connecting portions 12a and 12b is the same as that of the superconducting wire 1.
It is made to be larger than the cross-sectional area of the general part of 0.
この様に構成された本実施例においては、超電導限流器
ユニット２の接続は、常電導金属１３ａ。In this embodiment configured in this manner, the superconducting current limiter unit 2 is connected to the normally conducting metal 13a.
１３ｂにより行われることから機械的強度の高い超電導
限流装置を構成することが出来る。また接続部常電心金
＠１３ａ、 ’１３ｂは予め接続し易い構造とすること
が出来るため、工作、作業性も容易となる。13b, it is possible to construct a superconducting current limiting device with high mechanical strength. In addition, since the electrical cores @13a and '13b of the connecting portions can be constructed in advance so that they are easy to connect, machining and workability are also facilitated.
さらに超電導線１０と常電導金属１３の接続部分の断面
積は超電導線の一般部分より大きくしていることから接
続部分からの発熱は防止することが出来る。Furthermore, since the cross-sectional area of the connecting portion between the superconducting wire 10 and the normal conducting metal 13 is made larger than the general portion of the superconducting wire, heat generation from the connecting portion can be prevented.
また第３図の様に第２図の様に構成した超電導限流器ユ
ニット２を別の常電導金属１５により接続する様にして
も同様の効果が得られる。Further, as shown in FIG. 3, the same effect can be obtained even if the superconducting current limiter unit 2 configured as shown in FIG. 2 is connected by another normal conducting metal 15.
従って、最も信頼性が要求される各超電導限流器ユニッ
トの接続部分の機械的強度を高めることが出来ることか
ら信頼性の高い超電導限流装置を提供することができる
。Therefore, it is possible to increase the mechanical strength of the connecting portions of each superconducting current limiter unit, where the highest reliability is required, so that a highly reliable superconducting current limiting device can be provided.
以上の通り、本発明によれば、超電導限流器ユニットの
接続部分を常電導金属で構成することにより１機械的強
度の高い超電導限流器とすることによって信頼性の高い
超電導限流器を得る事ができる。As described above, according to the present invention, a highly reliable superconducting current limiter can be achieved by constructing the connecting portion of the superconducting current limiter unit with a normal-conducting metal to obtain a superconducting current limiter with high mechanical strength. You can get it.
第１図は本発明の超電導限流装置の一実施例を示す断面
図、第２図、第３図は超電導限流器ユニットの接続部分
の実施例を示す構成図である。
１・・・超電導限流器 ２・・・超電導限流器ユニ
ット１０・・・超電導線 １１・・・絶縁板１
２ａ 、 １２ｂ・・・接続部超電導線１３ａ、１３ｂ
、１５−常電導金属
代理人 弁理士 則 近 憲 佑
同 第子丸 健FIG. 1 is a sectional view showing an embodiment of a superconducting current limiter according to the present invention, and FIGS. 2 and 3 are configuration diagrams showing an embodiment of a connecting portion of a superconducting current limiter unit. 1... Superconducting current limiter 2... Superconducting current limiter unit 10... Superconducting wire 11... Insulating plate 1
2a, 12b... Connection superconducting wires 13a, 13b
, 15-Normal conductive metal agent Patent attorney Noriyuki Chika Ken Yudo Daishimaru Ken
Claims (1)
縁板状に形成し、これを一ユニットとして多数を直列ま
たは、並列に接続して超電導限流器を構成するものにお
いて、各ユニットの接続部分は常電導金属により構成し
たことを特徴とする超電導限流装置。A superconducting fault current limiter is constructed by forming an oxide superconducting material having a critical temperature of liquid nitrogen into an insulating plate shape and connecting a large number of them in series or in parallel as one unit, and the connecting part of each unit. is a superconducting current limiting device characterized by being constructed from a normal conducting metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63019516A JPH01198226A (en) | 1988-02-01 | 1988-02-01 | Superconduction current limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63019516A JPH01198226A (en) | 1988-02-01 | 1988-02-01 | Superconduction current limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01198226A true JPH01198226A (en) | 1989-08-09 |
Family
ID=12001516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63019516A Pending JPH01198226A (en) | 1988-02-01 | 1988-02-01 | Superconduction current limiter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01198226A (en) |
-
1988
- 1988-02-01 JP JP63019516A patent/JPH01198226A/en active Pending
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