JPH01198221A - Superconducting current limiter - Google Patents
Superconducting current limiterInfo
- Publication number
- JPH01198221A JPH01198221A JP63019511A JP1951188A JPH01198221A JP H01198221 A JPH01198221 A JP H01198221A JP 63019511 A JP63019511 A JP 63019511A JP 1951188 A JP1951188 A JP 1951188A JP H01198221 A JPH01198221 A JP H01198221A
- Authority
- JP
- Japan
- Prior art keywords
- superconducting
- tank
- insulating
- current limiting
- cryostat
- 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
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 17
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002887 superconductor Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims abstract description 9
- 239000011787 zinc oxide Substances 0.000 claims abstract description 8
- 230000002159 abnormal effect Effects 0.000 abstract description 7
- 230000015556 catabolic process Effects 0.000 abstract description 7
- 238000009413 insulation Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000010292 electrical insulation Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012050 conventional carrier Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005292 diamagnetic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity 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
- 238000000034 method Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000000638 solvent extraction Methods 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、酸化物高温超電導材を利用した超電導限流装
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 high temperature superconducting material.
（従来の技術）
超電導体の電力機器への反応に関しては比較的古くから
検討がなされてきたが、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反応研究も
進んでいる。ｌ、かじ、実用化には、様々な技術的問題
点がある。(Prior art) The reaction of superconductors to power equipment has been studied for a relatively long time, but recently, along with the development of AC superconducting wires, research has been conducted on the reaction of superconductors to AC electrical equipment such as transformers. Research is also progressing. There are various technical problems in putting the rudder into practical use.
これは、従来のＮｂＴｉやＮｂ３３ｒｌの様な液体ヘリ
ウムによる冷却を前提とした超電導材料を用いた搬器が
極低温での冷却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挙げられる。This is because conventional carriers using superconducting materials such as NbTi and Nb33rl, which are designed to be cooled by liquid helium, require cooling technology at extremely low temperatures, which hinders their commercialization in terms of economy and reliability. It can be mentioned that.
ところが、最近酸化物系高温超電導体開発が急速に進み
ＹＢａｚ ＣＵ３０７−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 the discovery of materials such as YBaz CU307-X, which exhibits the characteristics of superconductors such as zero electrical resistance and complete diamagnetic properties at liquid nitrogen temperatures, has been reported in various places.
この様な高温超電導材を利用した場合、液体窒素などを
冷媒として使う事かできるので、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電力機器への廃
用も急速に進むことが期待される。When such high-temperature superconducting materials are used, it is possible to use liquid nitrogen 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 its use in power equipment will rapidly progress.
特に高温超電導体を利用した限流装置はそれが高温超電
導体の特性を生かした廃用が期待出来ることから多方面
で開発が進められている。しかしこの様な高温超電導体
を用いた限流装置には以下のような問題点がある。In particular, current limiting devices using high-temperature superconductors are being developed in many fields because they can be expected to be discontinued by taking advantage of the characteristics of high-temperature superconductors. However, current limiting devices using such high-temperature superconductors have the following problems.
（発明が解決しようとする課題） 従来の限流装置の適用の一例を第３図に示す。(Problem to be solved by the invention) An example of the application of a conventional current limiting device is shown in FIG.
この場合、超電導体からなる限流袋＠３１は通常超電導
体となっているが、短絡電流等の臨界電流以上の電流が
流れるとクエンチし高抵抗体となる。In this case, the current limiting bag @31 made of a superconductor is normally a superconductor, but when a current exceeding a critical current such as a short circuit current flows, it quenches and becomes a high resistance body.
この時電流は限流され、遮断器等の開閉器３２により電
流の遮断が行われる。しかしながら、この場合限流装置
３１には限流に基ずく過電圧あるいは浮遊インダクタン
スによる過電圧が発生する。また、雷撃時にも異常電圧
が発生する。こうした過電圧は機器の絶縁破壊を引き起
こす可能性がめった。At this time, the current is limited, and the current is interrupted by a switch 32 such as a circuit breaker. However, in this case, an overvoltage based on current limiting or an overvoltage due to stray inductance occurs in the current limiting device 31. Abnormal voltages also occur during lightning strikes. These overvoltages are unlikely to cause insulation breakdown in equipment.
本発明はかかる欠点を改良するためになされたもので、
異常電圧による機器の絶縁破壊を未然に防止し絶縁特性
に優れ、かつ信頼性の高い超電導限流装置を得ることを
目的とするものである。The present invention was made to improve these drawbacks.
The purpose of this invention is to prevent dielectric breakdown of equipment due to abnormal voltage, and to obtain a superconducting current limiting device that has excellent insulation properties and is highly reliable.
〔発明の構成〕
（課題を解決するための手段）
上記発明の目的を達成するため、本発明においては限流
装置の超電導巻線とクライオスタットとの絶縁支持物内
に酸化亜鉛型素子を取り付けるものである。[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object of the invention, the present invention provides a method in which a zinc oxide type element is attached within an insulating support between a superconducting winding of a current limiting device and a cryostat. It is.
（作 用）
上記の手段によれば、常に電気絶縁性能を失うこと無く
、限流時おるいは雷撃時などに発生する異常電圧の抑制
を行うことができ機器の絶縁破壊を未然に防止できる。(Function) According to the above means, it is possible to suppress abnormal voltages that occur during current limiting or lightning strikes without always losing electrical insulation performance, and to prevent insulation breakdown of equipment. .
（実施例）
本発明の実施例を第１図に、その要部詳細を第２図に示
す。(Example) An example of the present invention is shown in FIG. 1, and details of its main parts are shown in FIG. 2.
第１図において超電導限流装置１は液態窒素温度の臨界
温度を有する酸化物高温超電導体からなる超電導巻線２
、ならびにこれを冷却するための液体窒素槽３、外部と
の熱絶縁を行う真空浴槽４及びこれらを仕切るためのク
ライオスタット（タンク）５．６、電気の気中絶縁を行
うためのブッシング７からなっている。超電導巻線２と
クライオスタット５の間には絶縁支持物１０ａ、１０ｂ
が挿入されている。また、クライオスタット５は支持物
８ａ、 ８ｂによりクライオスタット６と支持固定され
ている。In FIG. 1, a superconducting current limiting device 1 is a superconducting winding 2 made of an oxide high temperature superconductor having a critical temperature of liquid nitrogen temperature.
, a liquid nitrogen bath 3 for cooling it, a vacuum bath 4 for thermal insulation from the outside, a cryostat (tank) 5.6 for partitioning these, and a bushing 7 for air insulation of electricity. ing. Insulating supports 10a and 10b are provided between the superconducting winding 2 and the cryostat 5.
has been inserted. Furthermore, the cryostat 5 is supported and fixed to the cryostat 6 by supports 8a and 8b.
第２図に絶縁支持物１０ａ、 １０ｂの拡大図を示す。FIG. 2 shows an enlarged view of the insulating supports 10a and 10b.
。
絶縁筒１１はベース１２に機械的に支持固定され、内部
には酸化亜鉛型素子１３が収納されている。. The insulating cylinder 11 is mechanically supported and fixed to the base 12, and a zinc oxide type element 13 is housed inside.
本実施例によれば超電導巻線２は絶縁支持物１０ａ、１
０ｂによって機械的に支持されるとともに電気的に絶縁
が保たれている。一方、限流時あるいは雷撃時などに異
常電圧が発生した場合には酸化亜鉛型素子１３によりサ
ージの抑制を行うことができる。According to this embodiment, the superconducting winding 2 has insulating supports 10a, 1
It is mechanically supported by 0b and electrically insulated. On the other hand, when an abnormal voltage occurs during current limiting or lightning strikes, the surge can be suppressed by the zinc oxide type element 13.
すなわち、超電導限流装置としての機能を失うことなく
異常電圧による電気絶縁破壊事故を無くすことができる
。That is, electrical insulation breakdown accidents due to abnormal voltage can be eliminated without losing the function as a superconducting current limiting device.
以上、説明したように、本発明によれば、液体窒素温度
の臨界温度を有する酸化物高温超電導体を用いて限流装
置を構成した場合に問題となる異常電圧による電気絶縁
破壊事故を酸化亜鉛型素子を内蔵した絶縁支持物を採用
することにより防ぐことができ、これによって信頼性の
高い超電導限流装置を得ることができる。As explained above, according to the present invention, electrical insulation breakdown accidents due to abnormal voltage, which are problematic when a current limiting device is constructed using an oxide high temperature superconductor having a critical temperature of liquid nitrogen temperature, can be prevented by zinc oxide. This can be prevented by employing an insulating support with a built-in mold element, thereby making it possible to obtain a highly reliable superconducting current limiting device.
第１図は本発明の一実施例を示す断面図、第２図は第１
図の要部拡大図、第３図は本発明の適用例を示す概略系
統図である。
１：超電導限流装置 ２：超電導巻線３：液体窒素
槽 ４：真空槽
５．６：タライオスタツト
７：ブッシング ８：支持物
１０：絶縁支持物 １１：絶縁筒１２：ベース
１３：酸化亜鉛型素子代理人 弁理士
則 近 憲 佑
同 第子丸 健
第１図
１０α（１０１））
第２図
第３図FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG.
FIG. 3 is an enlarged view of the main part of the figure and a schematic system diagram showing an example of application of the present invention. 1: Superconducting current limiting device 2: Superconducting winding 3: Liquid nitrogen tank 4: Vacuum tank 5.6: Taliostat 7: Bushing 8: Support 10: Insulating support 11: Insulating cylinder 12: Base 13: Zinc oxide type element agent patent attorney
Nori Chika Ken Yudo Daishimaru Ken Figure 1 10α (101)) Figure 2 Figure 3
Claims (1)
いた超電導限流装置において、超電導巻線とクライオス
タット間の絶縁支持物として酸化亜鉛型素子を内蔵した
絶縁支持物を使用したことを特徴とした超電導限流装置
。A superconducting current limiting device using an oxide superconductor having a critical temperature of liquid nitrogen temperature, characterized by using an insulating support with a built-in zinc oxide type element as an insulating support between the superconducting winding and the cryostat. Superconducting current limiting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63019511A JPH01198221A (en) | 1988-02-01 | 1988-02-01 | Superconducting current limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63019511A JPH01198221A (en) | 1988-02-01 | 1988-02-01 | Superconducting current limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01198221A true JPH01198221A (en) | 1989-08-09 |
Family
ID=12001391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63019511A Pending JPH01198221A (en) | 1988-02-01 | 1988-02-01 | Superconducting current limiter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01198221A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101842865A (en) * | 2007-11-01 | 2010-09-22 | 全能智电力股份有限公司 | High voltage saturated core fault current limiter |
-
1988
- 1988-02-01 JP JP63019511A patent/JPH01198221A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101842865A (en) * | 2007-11-01 | 2010-09-22 | 全能智电力股份有限公司 | High voltage saturated core fault current limiter |
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