JPH01206827A - Superconducting current limiter - Google Patents
Superconducting current limiterInfo
- Publication number
- JPH01206827A JPH01206827A JP63027565A JP2756588A JPH01206827A JP H01206827 A JPH01206827 A JP H01206827A JP 63027565 A JP63027565 A JP 63027565A JP 2756588 A JP2756588 A JP 2756588A JP H01206827 A JPH01206827 A JP H01206827A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- superconducting
- current limiter
- liquid nitrogen
- superconducting current
- 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 Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 5
- 238000009835 boiling Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 13
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 239000012212 insulator Substances 0.000 abstract description 3
- 239000002887 superconductor Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000017525 heat dissipation 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
- 229910000657 niobium-tin Inorganic materials 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000000630 rising effect Effects 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）
この発明は酸化物超電導体を用いた超電導限流器の絶縁
構成に関する。DETAILED DESCRIPTION OF THE INVENTION (Objective of the Invention) (Industrial Application Field) The present invention relates to an insulating structure of a superconducting current limiter using an oxide superconductor.
（従来の技術）
超電導体の電力機器への応用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 the application of 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Ｎ ｂ ３ Ｓ ｎ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 due to the fact that conventional equipment using superconducting materials such as NbTi and Nb3Sn, which are designed to be cooled by liquid helium, requires the extreme technology of freezing at extremely low temperatures. One of the major factors is that this has been an obstacle 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
、ＹＢａ２ ＣＵ３０ｖ−ｘなど液体窒素温度以上で電
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。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。However, recently, the development of oxide-based high-temperature superconductors has progressed rapidly, and the discovery of materials such as YBa2 CU30v-x, which exhibit the characteristics of superconductors such as zero electrical resistance and complete diamagnetism above liquid nitrogen temperature, has been reported in various places. . 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.
（発明が解決しようとする課題）
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一線地絡や短絡等の
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。(Problems to be Solved by the Invention) As a superconducting power transmission line, a method can be considered in which a superconducting substation and a superconducting cable are connected to supply energy to a load. In such superconducting equipment, if an accident such as a one-line ground fault or short circuit occurs on the load side and the equipment becomes heated, 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.
高電圧系統に使用される限流装置は対地に対する電気的
絶縁と液体窒素内に封入されているため、その冷却媒体
の温度上昇を防止する熱絶縁を行う絶縁構成とする必要
がある。Current limiting devices used in high-voltage systems are electrically insulated from the ground and sealed in liquid nitrogen, so they must have an insulating structure that provides thermal insulation to prevent the temperature of the cooling medium from rising.
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、コンパクトで信頼性の高い超電導限流器
を得ることにおる。The present invention was proposed to solve these problems, and the object is to obtain a compact and highly reliable superconducting current limiter.
（課題を解決するための手段）
本発明の超電導限流器は、液体窒素を封入したタンク内
に超電導限流器を配置したものにおいて、このタンクを
真空容器に設置し、夫々のタンクの電位を同一となるよ
う接続し、さらにこれらのタンクをＳＦ６ガスあるいは
絶縁油等の絶縁媒体を封入したタンク内に絶縁支持する
ことにより、電気的絶縁と熱的絶縁を行うようにしたも
のである。(Means for Solving the Problems) The superconducting fault limiter of the present invention is one in which the superconducting fault limiter is arranged in a tank filled with liquid nitrogen, and this tank is installed in a vacuum container, and the potential of each tank is These tanks are electrically and thermally insulated by connecting them so that they are identical, and by insulating and supporting these tanks within a tank filled with an insulating medium such as SF6 gas or insulating oil.
（作 用）
本発明の超電導限流装置においては、超電導限流器が設
置されている液体窒素が封入されたタンクは同電位の真
空容器内に置かれているため、外部への熱の伝達が抑制
され、超電導限流器の電気的絶縁は液体窒素と真空容器
の外部に配置したＳＦ６ガスあるいは絶縁油などの絶縁
媒体を入れたタンク内の絶縁媒体により行うことににす
、真空容器内に電圧が分担しないようにしたものでおる
。(Function) In the superconducting current limiter of the present invention, since the tank filled with liquid nitrogen in which the superconducting current limiter is installed is placed in a vacuum container at the same potential, heat is not transferred to the outside. Electrical insulation of the superconducting fault current limiter will be performed using an insulating medium in a tank containing liquid nitrogen and an insulating medium such as SF6 gas or insulating oil placed outside the vacuum vessel. The voltage is not shared between the two.
（実施例〉
以下、本発明の超電導限流器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 limiter of the present invention will be described in detail with reference to the drawings.
図は超電導限流器の構成を示す図で必る。図において、
酸化物超電導材料を用いた超電導限流器１は液体窒素２
を充填したタンク３内に絶縁支持されており、その外側
は、真空にした液体窒素２より熱の放散を防止する真空
タンク５を配置し、さらに、その外側はＳＦ６ガスある
いは、絶縁油などの絶縁媒体６を充填したタンク８を取
付はタンク５とタンク８の間は絶縁物７により絶縁支持
されている。また、タンク３とタンク５は同一電位とな
るよう電気的に接続されている。超電導限流器１は絶縁
リード９ａ、９ｂを介してブッシング１０ａ、 １０ｂ
により、外部の送電線路又は、機器に接続されている。The figure must be a diagram showing the configuration of a superconducting current limiter. In the figure,
Superconducting current limiter 1 using oxide superconducting material is liquid nitrogen 2
A vacuum tank 5 is placed on the outside of the tank 3 to prevent heat dissipation from the evacuated liquid nitrogen 2, and the outside is filled with SF6 gas or insulating oil. When installing a tank 8 filled with an insulating medium 6, the space between the tank 5 and the tank 8 is insulated and supported by an insulator 7. Further, the tank 3 and the tank 5 are electrically connected to have the same potential. The superconducting current limiter 1 is connected to bushings 10a and 10b via insulated leads 9a and 9b.
is connected to external power transmission lines or equipment.
この様に構成された本実施例においては、超電導限流器
１は液体窒素２により冷却され超電導状態に保持され、
液体窒素２は真空に保持された真空タンク５により、断
熱されている。また、タンク３と真空タンク５は同一電
位として真空部分に電圧が加わらない様にしているため
、万一、真空部分がリークしても、絶縁は液体窒素２と
ＳＦ６ガスまたは絶縁油などの絶縁媒体６とで分担する
ため、真空部分の絶縁強度に影響されない。高真空の絶
縁強度は高いが真空度が低下した場合、その絶縁強度の
低下が大きいことから真空部分に電圧がかからない様に
することにより、絶縁信頼性の高い超電導限流装置が１
ｑられる。In this embodiment configured in this way, the superconducting current limiter 1 is cooled by liquid nitrogen 2 and maintained in a superconducting state,
The liquid nitrogen 2 is insulated by a vacuum tank 5 kept in a vacuum. In addition, tank 3 and vacuum tank 5 are kept at the same potential so that no voltage is applied to the vacuum part, so even if the vacuum part leaks, the insulation is made of liquid nitrogen 2 and SF6 gas or insulation oil. Since it is shared with the medium 6, it is not affected by the insulation strength of the vacuum part. The insulation strength of a high vacuum is high, but when the degree of vacuum decreases, the insulation strength decreases significantly, so by preventing voltage from being applied to the vacuum part, a superconducting current limiting device with high insulation reliability can be used.
be qed.
本実施例では、超電導限流器１は液体窒素２中に絶縁支
持する構成で説明したが、超電導限流器１の中央部分の
電位とタンク３の電位を接続するようにすれば超電導限
流器１とタンク３の間の液体窒素２には常時はほとんど
電圧が加わらないで絶縁媒体６で対地電圧に耐えること
になり、超電導限流器１が系統の事故などにより、クエ
ンチした場合、超電導限流器１の両端に線間電圧が加わ
るが超電導限流器１の中央部とタンク３の電位を接続し
ておくことにより、超電導限流器１の間の電圧の１７２
ずつがタンク間に加わるため、絶縁が容易となる。In this embodiment, the superconducting current limiter 1 is supported insulated in liquid nitrogen 2, but if the potential of the central part of the superconducting fault limiter 1 and the potential of the tank 3 are connected, the superconducting current limiter 1 can be Almost no voltage is normally applied to the liquid nitrogen 2 between the device 1 and the tank 3, and the insulating medium 6 withstands the ground voltage. A line voltage is applied to both ends of the current limiter 1, but by connecting the potential of the center of the superconducting fault limiter 1 and the tank 3, the voltage between the superconducting fault limiter 1 can be reduced by 172
Since each tank is added between the tanks, insulation becomes easy.
以上の通り、本発明によれば、液体窒素で冷却された超
電導限流器を真空容器と絶縁媒体を封入したタンクの三
重タンク＠造とすることにより、断熱と絶縁を合理的に
行う事が出来るため、絶縁信頼性の高い超電導限流器を
提供することが出来る。As described above, according to the present invention, thermal insulation and insulation can be rationally achieved by constructing a superconducting fault limiter cooled with liquid nitrogen in a triple tank structure consisting of a vacuum container and a tank sealed with an insulating medium. Therefore, it is possible to provide a superconducting current limiter with high insulation reliability.
図は本発明の超電導限流装置の一実施例を示す構成図で
ある。
１・・・超電導限流器 ２・・・液体窒素３・・・
タンク ５・・・真空容器６・・・絶縁媒体
７・・・絶縁物８・・・タンク
９ａ、 ９ｂ・・・絶縁リード１０・・・ブッシング
代理人 弁理士 則 近 恵 佑
同 第子丸 健The figure is a configuration diagram showing an embodiment of a superconducting current limiting device of the present invention. 1...Superconducting current limiter 2...Liquid nitrogen 3...
Tank 5... Vacuum container 6... Insulating medium 7... Insulator 8... Tank
9a, 9b...Insulated lead 10...Bushing agent Patent attorney Nori Chika Yudo Ken Daishimaru
Claims (1)
用いた超電導限流器において、この超電導限流器を液体
窒素により冷却絶縁されたタンクに封入し、かつ、この
タンクを真空容器内に入れ、さらに、これらＳＦガスや
絶縁油等の絶縁媒体を封入したタンクを配設し、絶縁支
持したことを特徴とした超電導限流器。In a superconducting fault limiter using an oxide superconducting material having a critical temperature equal to the boiling point of liquid nitrogen, the superconducting fault limiter is sealed in an insulated tank cooled by liquid nitrogen, and the tank is placed in a vacuum container. A superconducting fault current limiter further comprising a tank filled with an insulating medium such as SF gas or insulating oil, and insulated and supported.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63027565A JPH01206827A (en) | 1988-02-10 | 1988-02-10 | Superconducting current limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63027565A JPH01206827A (en) | 1988-02-10 | 1988-02-10 | Superconducting current limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01206827A true JPH01206827A (en) | 1989-08-21 |
Family
ID=12224552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63027565A Pending JPH01206827A (en) | 1988-02-10 | 1988-02-10 | Superconducting current limiter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01206827A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010151583A3 (en) * | 2009-06-26 | 2011-02-24 | Varian Semiconductor Equipment Associates | Technique for limiting transmission of fault current |
-
1988
- 1988-02-10 JP JP63027565A patent/JPH01206827A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010151583A3 (en) * | 2009-06-26 | 2011-02-24 | Varian Semiconductor Equipment Associates | Technique for limiting transmission of fault current |
| CN102576799A (en) * | 2009-06-26 | 2012-07-11 | 瓦里安半导体设备公司 | Technique for limiting transmission of fault current |
| JP2012531881A (en) * | 2009-06-26 | 2012-12-10 | ヴァリアン セミコンダクター イクイップメント アソシエイツ インコーポレイテッド | Technology to limit transmission of fault current |
| US8467158B2 (en) | 2009-06-26 | 2013-06-18 | Varian Semiconductor Equipment Associates, Inc. | Technique for limiting transmission of fault current |
| US8804288B2 (en) | 2009-06-26 | 2014-08-12 | Varian Semiconductor Equipment Associates, Inc. | Technique for limiting transmission of fault current |
| TWI487227B (en) * | 2009-06-26 | 2015-06-01 | Varian Semiconductor Equipment | Apparatus and method for limiting transmission of fault current |
| US9391450B2 (en) | 2009-06-26 | 2016-07-12 | Varian Semiconductor Equipment Associates, Inc. | Technique for limiting transmission of fault current |
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