JPH07192913A - Superconducting coil system and operating method thereof - Google Patents
Superconducting coil system and operating method thereofInfo
- Publication number
- JPH07192913A JPH07192913A JP6286534A JP28653494A JPH07192913A JP H07192913 A JPH07192913 A JP H07192913A JP 6286534 A JP6286534 A JP 6286534A JP 28653494 A JP28653494 A JP 28653494A JP H07192913 A JPH07192913 A JP H07192913A
- Authority
- JP
- Japan
- Prior art keywords
- superconducting coil
- energy
- circuit breaker
- switch
- supply
- 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.)
- Granted
Links
- 238000011017 operating method Methods 0.000 title description 4
- 238000010791 quenching Methods 0.000 claims abstract description 73
- 230000001681 protective effect Effects 0.000 claims abstract description 16
- 230000000171 quenching effect Effects 0.000 claims abstract description 14
- 230000005284 excitation Effects 0.000 claims description 33
- 230000006378 damage Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 10
- 230000007423 decrease Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004065 semiconductor Substances 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
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
-
- 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
- Particle Accelerators (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、励磁電源から直流遮断
器を介して超電導コイルにエネルギーを供給し励磁する
超電導コイルシステムに係り、特に、クエンチ時に、そ
れまで蓄積されていたエネルギーを超電導コイルに並列
接続された保護抵抗に消費させて、クエンチに起因する
損傷から超電導コイルを保護する超電導コイル保護装置
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a superconducting coil system in which energy is supplied from a magnetic excitation power source to a superconducting coil via a DC circuit breaker to excite the superconducting coil. The present invention relates to a superconducting coil protection device that consumes a protective resistance connected in parallel to a superconducting coil to protect the superconducting coil from damage caused by a quench.
【０００２】[0002]
【従来の技術】最近では、核融合装置，加速器，電力エ
ネルギー貯蔵設備，リニアモータ等の分野において、超
電導コイルの応用が急速に広まりつつある。超電導コイ
ルは、通常はその電気抵抗が零であるが、磁場の急変や
温度の異常等により、超電導状態から常電導状態に転移
することがある。この超電導が破壊する現象は、クエン
チと呼ばれている。クエンチが発生すると、液体ヘリウ
ム等の異常蒸発による圧力増大等に拡大するおそれがあ
る。2. Description of the Related Art Recently, the application of superconducting coils is rapidly spreading in the fields of nuclear fusion devices, accelerators, electric energy storage facilities, linear motors and the like. The electric resistance of the superconducting coil is normally zero, but the superconducting coil may change from the superconducting state to the normal conducting state due to a sudden change in the magnetic field or an abnormal temperature. This phenomenon of destruction of superconductivity is called quench. When quenching occurs, there is a risk that the pressure will increase due to abnormal evaporation of liquid helium or the like.
【０００３】図２は、従来の基本的な超電導コイルシス
テムの系統構成を示す図である。図２に示すように、励
磁電源３からエネルギーを供給されている超電導コイル
１でクエンチが発生した場合、超電導コイル１に蓄積さ
れていたエネルギーを保護抵抗２において消費し、クエ
ンチの拡大を抑制し、超電導コイル１を保護する方式が
採用されている。すなわち、クエンチが発生すると、励
磁電源３と超電導コイル１とで構成されるループ回路に
流れる電流を、超電導コイル１と並列に接続された保護
抵抗２にシフトさせる。この時に、直流の大電流を遮断
する直流遮断器４が必要となる。FIG. 2 is a diagram showing a system configuration of a conventional basic superconducting coil system. As shown in FIG. 2, when quenching occurs in the superconducting coil 1 to which energy is being supplied from the excitation power source 3, the energy stored in the superconducting coil 1 is consumed in the protective resistance 2 to suppress the expansion of the quench. A method of protecting the superconducting coil 1 is adopted. That is, when the quench occurs, the current flowing in the loop circuit composed of the excitation power supply 3 and the superconducting coil 1 is shifted to the protection resistor 2 connected in parallel with the superconducting coil 1. At this time, the DC circuit breaker 4 that blocks a large DC current is required.
【０００４】最近は、超電導コイル応用装置すなわち超
電導コイルシステムの大型化が進み、超電導コイル１に
流す電流も大電流化する傾向にあり、連続運転をめざし
ている超電導コイルシステムが増えている。そのため
に、クエンチ保護に使用される直流遮断器４も、直流大
電流の遮断が可能で、しかも、連続運転できる直流遮断
器であることが条件となる。Recently, the size of the superconducting coil application device, that is, the superconducting coil system has been increasing, and the current flowing through the superconducting coil 1 has tended to increase, and the number of superconducting coil systems aiming for continuous operation is increasing. Therefore, the DC breaker 4 used for quench protection must be a DC breaker capable of interrupting a large DC current and capable of continuous operation.
【０００５】図３は、並列接続した直流遮断器を用いる
従来の超電導コイルシステムの系統構成を示す図であ
る。一般に、高圧型の直流遮断器は小電流しか扱えず、
逆に大電流を扱える直流遮断器は低圧型であった。１台
の高圧型直流遮断器では、大電流の連続通電には耐えら
れないので、図３に示すように、数台の高圧型直流遮断
器を並列運転していた。なお、この種の従来装置を示す
例としては、特開昭５７−１９８６１３号等がある。FIG. 3 is a diagram showing a system configuration of a conventional superconducting coil system using DC breakers connected in parallel. Generally, a high-voltage DC circuit breaker can handle only a small current,
Conversely, the DC circuit breaker that can handle a large current was a low voltage type. Since one high-voltage DC circuit breaker cannot withstand continuous energization of a large current, several high-voltage DC circuit breakers were operated in parallel as shown in FIG. As an example of this type of conventional device, there is JP-A-57-198613.
【０００６】[0006]
【発明が解決しようとする課題】上記従来技術において
は、クエンチ保護として直流を遮断する場合、数台の高
圧型直流遮断器が必要であり、保護装置としては非常に
高価であった。In the above-mentioned prior art, when the direct current is cut off for quench protection, several high-voltage type DC circuit breakers are required, and the protection device is very expensive.
【０００７】また、並列接続された数台の直流遮断器を
同時に遮断させることは困難であって、タイミングのず
れに起因する遮断動作のばらつきにより、直流遮断器自
体および他の回路構成機器を損傷するおそれがあった。Further, it is difficult to break several DC breakers connected in parallel at the same time, and the DC breaker itself and other circuit components are damaged due to variations in breaking operation due to timing deviation. There was a risk of
【０００８】本発明の目的は、直流大電流で連続運転し
つつ、クエンチ等の緊急時にはその直流大電流を確実に
遮断でき、単純な構成で安価な超電導コイル保護装置を
備えた超電導コイルシステム提供することである。An object of the present invention is to provide a superconducting coil system having a simple structure and an inexpensive superconducting coil protection device capable of reliably interrupting the DC large current in an emergency such as a quench while continuously operating with the DC large current. It is to be.
【０００９】[0009]
【課題を解決するための手段】本発明は、上記目的を達
成するため、第１発明として、励磁電源と、通常運転時
に励磁電源からエネルギーの供給を受けるとともに、ク
エンチが生じた際にはエネルギーの供給を遮断される超
電導コイルと、超電導コイルと並列に接続され、超電導
コイルへのエネルギーの供給が遮断された状態で超電導
コイルに蓄積されていたエネルギーを消費し、クエンチ
に起因する損傷から超電導コイルを保護する保護抵抗と
を備えた超電導コイルシステムにおいて、励磁電源と超
電導コイルとの間に、通常運転時に開放され、クエンチ
が生じた際には一旦投入され、所定条件が成立した時に
再度開放され、励磁電源から超電導コイルへのエネルギ
ーの供給を遮断する直流遮断器を直列に配置するととも
に、直流遮断器と並列に、通常運転時に投入され励磁電
源からのエネルギーを超電導コイルに供給し、クエンチ
が生じた際には自らを流れている励磁電源からのエネル
ギーを直流遮断器にシフトさせ、自らを流れているエネ
ルギーが所定値以下に減少したら開放される少なくとも
１つの開閉器を設けた超電導コイルシステムを提案する
ものである。In order to achieve the above object, the present invention provides, as a first invention, an excitation power source and energy from the excitation power source during normal operation, and when a quench occurs, the energy is supplied. Is connected in parallel with the superconducting coil, and the energy stored in the superconducting coil is consumed while the supply of energy to the superconducting coil is cut off. In a superconducting coil system equipped with a protective resistance for protecting the coil, it is opened between the excitation power source and the superconducting coil during normal operation, once when a quench occurs, it is once opened, and when the predetermined condition is satisfied, it is opened again. The DC circuit breaker, which blocks the energy supply from the excitation power supply to the superconducting coil, is arranged in series, and The superconducting coil is supplied with energy from the excitation power supply that is input to the train during normal operation, and when quench occurs, the energy from the excitation power supply is shifted to the DC circuit breaker and flows through itself. The present invention proposes a superconducting coil system provided with at least one switch that is opened when energy decreases below a predetermined value.
【００１０】本発明は、上記目的を達成するため、第２
発明として、励磁電源と、通常運転時に励磁電源からエ
ネルギーの供給を受けるとともに、クエンチが生じた際
にはエネルギーの供給を遮断される超電導コイルと、超
電導コイルと並列に接続され、超電導コイルへのエネル
ギーの供給が遮断された状態で超電導コイルに蓄積され
ていたエネルギーを消費し、クエンチに起因する損傷か
ら超電導コイルを保護する保護抵抗とを備えた超電導コ
イルシステムにおいて、励磁電源と超電導コイルとの間
に、通常運転時に投入され励磁電源からのエネルギーを
超電導コイルに供給し、クエンチが生じた際には所定条
件が成立した時に開放され、励磁電源から超電導コイル
へのエネルギーの供給を遮断する直流遮断器を直列に配
置するとともに、直流遮断器と並列に、通常運転時に投
入され励磁電源からのエネルギーを超電導コイルに供給
し、クエンチが生じた際には直流遮断器に先立って開放
され自らを流れている励磁電源からのエネルギーを直流
遮断器にシフトさせる少なくとも１つの開閉器を設けた
超電導コイルシステムを提案するものである。The present invention has a second object to achieve the above object.
As an invention, an exciting power source, a superconducting coil that receives energy supply from the exciting power source during normal operation, and is cut off from the supply of energy when a quench occurs, and is connected in parallel with the superconducting coil to connect to the superconducting coil. In a superconducting coil system having a protective resistance that consumes the energy stored in the superconducting coil in a state where the energy supply is cut off and that protects the superconducting coil from damage caused by quenching, In the meantime, the DC that is turned on during normal operation supplies energy from the excitation power supply to the superconducting coil, and is opened when a predetermined condition is met when a quench occurs and shuts off the energy supply from the excitation power supply to the superconducting coil. Arrange the circuit breakers in series, and in parallel with the DC circuit breaker, turn on the excitation power supply during normal operation. Energy is supplied to the superconducting coil, and when a quench occurs, it is opened prior to the DC circuit breaker, and the energy from the exciting power supply flowing through itself is shifted to the DC circuit breaker. It proposes a coil system.
【００１１】本発明は、上記目的を達成するため、第３
発明として、通常運転時は励磁電源から超電導コイルに
エネルギーを供給し超電導コイルを励磁する一方、クエ
ンチが生じた際にはエネルギーの供給を遮断し、超電導
コイルに蓄積されていたエネルギーを超電導コイルに並
列接続された保護抵抗に消費させ、クエンチに起因する
損傷から超電導コイルを保護する超電導コイルシステム
の運転方法において、通常運転時には、励磁電源と超電
導コイルとの間に配置された直流遮断器を開放し、直流
遮断器に並列に接続された少なくとも１つの開閉器を介
して励磁電源からのエネルギーを超電導コイルに供給
し、クエンチが生じた際には、直流遮断器を一旦投入し
て開閉器を流れているエネルギーを直流遮断器にシフト
させ、開閉器を開放し、直流遮断器を流れていたエネル
ギーが所定値に減少したら直流遮断器を開放して超電導
コイルへのエネルギーの供給を遮断し、その後、超電導
コイルに蓄積されていたエネルギーを保護抵抗に消費さ
せる超電導コイルシステムの運転方法を提案するもので
ある。The present invention has a third object to achieve the above object.
As an invention, during normal operation, while supplying energy to the superconducting coil from the excitation power source to excite the superconducting coil, when the quench occurs, the energy supply is cut off and the energy stored in the superconducting coil is transferred to the superconducting coil. In the operation method of the superconducting coil system, which consumes the protection resistance connected in parallel and protects the superconducting coil from damage caused by quenching, during normal operation, open the DC circuit breaker placed between the excitation power supply and the superconducting coil. Then, the energy from the excitation power supply is supplied to the superconducting coil through at least one switch connected in parallel with the DC circuit breaker, and when a quench occurs, the DC circuit breaker is once closed to open the switch. The flowing energy is shifted to the DC circuit breaker, the switch is opened, and the energy flowing through the DC circuit breaker is reduced to the specified value. Once opened the DC breaker to shut off the supply of energy to the superconducting coil, then proposes a method of operating a superconducting coil system to consume the protective resistance energy stored in the superconducting coil.
【００１２】本発明は、上記目的を達成するため、第４
発明として、通常運転時は励磁電源から超電導コイルに
エネルギーを供給し超電導コイルを励磁する一方、クエ
ンチが生じた際にはエネルギーの供給を遮断し、超電導
コイルに蓄積されていたエネルギーを超電導コイルに並
列接続された保護抵抗に消費させ、クエンチに起因する
損傷から超電導コイルを保護する超電導コイルシステム
の運転方法において、通常運転時には、励磁電源と超電
導コイルとの間に配置された直流遮断器および当該直流
遮断器と並列に接続されている少なくとも１つの開閉器
を介して励磁電源からのエネルギーを超電導コイルに供
給し、クエンチが生じた際には、開閉器を開放し、励磁
電源からのエネルギーを直流遮断器にシフトさせ、直流
遮断器を流れていたエネルギーが所定値に減少したら直
流遮断器を開放して超電導コイルへのエネルギーの供給
を遮断し、その後、超電導コイルに蓄積されていたエネ
ルギーを保護抵抗に消費させる超電導コイルシステムの
運転方法を提案するものである。In order to achieve the above object, the present invention provides a fourth aspect of the invention.
As an invention, during normal operation, while supplying energy to the superconducting coil from the excitation power source to excite the superconducting coil, when the quench occurs, the energy supply is cut off and the energy stored in the superconducting coil is transferred to the superconducting coil. In a method of operating a superconducting coil system, which consumes a protective resistance connected in parallel and protects the superconducting coil from damage caused by quenching, in a normal operation, a DC circuit breaker arranged between an exciting power source and the superconducting coil, and Energy from the excitation power supply is supplied to the superconducting coil through at least one switch connected in parallel with the DC breaker, and when a quench occurs, the switch is opened to transfer the energy from the excitation power supply. Shift to a DC circuit breaker, and open the DC circuit breaker when the energy flowing through the DC circuit breaker decreases to a specified value. Cut off the supply of energy to the superconducting coil, then proposes a method of operating a superconducting coil system to consume the protective resistance energy stored in the superconducting coil.
【００１３】[0013]
【作用】第１発明の超電導コイルシステムおよびその運
転方法である第３発明においては、通常運転時に、直流
遮断器は開放しておき、この直流遮断器と並列に接続し
た開閉器に直流大電流を連続的に流しておく。クエンチ
が発生した時は、直流遮断器を投入させ、直流遮断器に
大電流をシフトさせ、開閉器を開放し、その後に、直流
遮断器により遮断動作を実行する。遮断動作が完了すれ
ば、保護抵抗に超電導コイルのエネルギーを消費させる
ことができる。In the third aspect of the present invention, which is the superconducting coil system and the operating method thereof, the DC circuit breaker is opened during normal operation, and a large DC current is applied to the switch connected in parallel with the DC circuit breaker. Is continuously flushed. When a quench occurs, the DC circuit breaker is closed, a large current is shifted to the DC circuit breaker, the switch is opened, and then the DC circuit breaker performs the breaking operation. When the breaking operation is completed, the protective resistance can consume the energy of the superconducting coil.
【００１４】このように、直流遮断器に大電流を流す期
間を実質的にクエンチ発生時のみに限定することによ
り、通電容量が小さく経済性の高い直流遮断器を選定で
き、直流大電流で連続運転される超電導コイルのクエン
チ時の電流を確実に遮断可能である。すなわち、高価な
直流遮断器は１台のみで、安価な開閉器を併設してある
ので、超電導コイルシステム全体としては、大幅なコス
トダウンが可能である。As described above, by limiting the period during which a large current flows through the DC circuit breaker substantially only when the quench occurs, a DC circuit breaker with a small current-carrying capacity and high economic efficiency can be selected, and continuous DC high current It is possible to reliably cut off the current when the superconducting coil to be operated is quenched. That is, since there is only one expensive DC circuit breaker and an inexpensive switch is installed side by side, the cost of the superconducting coil system as a whole can be significantly reduced.
【００１５】また、クエンチ発生時には、１台の直流遮
断器を一旦投入し、開閉器側の電流がほぼ０になったと
ころでこれらの開閉器を開き、それから１台の直流遮断
器を開くことから、それらの開閉のタイミングはそれほ
ど厳密でなくてもよく、開閉タイミングの相対的ずれに
よる直流遮断器や開閉器自体の損傷のおそれがほとんど
ない。Further, when a quench occurs, one DC breaker is turned on once, and when the current on the switch side becomes almost 0, these switches are opened, and then one DC breaker is opened. However, the timing of opening and closing them does not have to be so strict, and there is almost no risk of damage to the DC circuit breaker or the switch itself due to the relative deviation of the opening and closing timing.
【００１６】第２発明の超電導コイルシステムおよびそ
の運転方法である第４発明においては、通常運転時に、
直流遮断器と並列に接続した開閉器に直流大電流を連続
的に流しておくことは、第１発明等と同じであるが、直
流遮断器も投入し、直流遮断器にもその定格内の電流を
分流させておく。開閉器と直流遮断器との直流の分流の
比率は、それぞれ適切な内部抵抗の機種を選択すると設
定できる。クエンチが発生した時は、開閉器を開放し、
そのアーク抵抗により、開閉器側の大電流を直流遮断器
にシフトさせ、その後に、直流遮断器により遮断動作を
実行する。遮断動作が完了すれば、保護抵抗に超電導コ
イルのエネルギーを消費させることが可能となる。In the fourth aspect of the superconducting coil system and the operating method thereof according to the second aspect of the present invention, during normal operation,
It is the same as in the first aspect of the invention that a large DC current is continuously passed through a switch connected in parallel with a DC circuit breaker, but the DC circuit breaker is also turned on and the DC circuit breaker is within its rating. Divide the current. The ratio of the DC shunt between the switch and the DC breaker can be set by selecting a model with an appropriate internal resistance. When a quench occurs, open the switch,
Due to the arc resistance, a large current on the switch side is shifted to the DC breaker, and then the breaking operation is executed by the DC breaker. When the breaking operation is completed, it becomes possible for the protective resistance to consume the energy of the superconducting coil.
【００１７】このように、通常運転時にも、直流遮断器
に電流を分流させておくこともできるので、クエンチ発
生時に、直流遮断器の投入操作を行なわずに済む。した
がって、クエンチ発生から直流遮断までの時間を大幅に
短縮し、超電導コイルをより確実に保護できる。As described above, the current can be shunted to the DC circuit breaker even during the normal operation, so that it is not necessary to turn on the DC circuit breaker when a quench occurs. Therefore, the time from the occurrence of the quench to the interruption of the direct current can be greatly reduced, and the superconducting coil can be protected more reliably.
【００１８】この場合も、直流遮断器に大電流を流す期
間を実質的にクエンチ発生時のみに限定することによ
り、通電容量が小さく経済性の高い直流遮断器を選定で
き、直流大電流で連続運転される超電導コイルのクエン
チ時の電流を確実に遮断可能である。すなわち、高価な
直流遮断器は１台のみで、安価な開閉器を併設してある
ので、超電導コイルシステム全体としては、大幅なコス
トダウンが可能である。In this case as well, by limiting the period during which a large current flows through the DC circuit breaker substantially only when a quench occurs, a DC circuit breaker with a small current-carrying capacity and high economic efficiency can be selected. It is possible to reliably cut off the current when the superconducting coil to be operated is quenched. That is, since there is only one expensive DC circuit breaker and an inexpensive switch is installed side by side, the cost of the superconducting coil system as a whole can be significantly reduced.
【００１９】また、クエンチ発生時には、開閉器を開
き、そのアーク抵抗により直流遮断器に大電流をシフト
させ、それから１台の直流遮断器を開くことから、それ
らの開閉のタイミングはそれほど厳密でなくてもよく、
相対的開閉タイミングのずれによる直流遮断器や開閉器
自体の損傷のおそれがほとんどない。Also, when a quench occurs, the switch is opened, a large current is shifted to the DC circuit breaker by its arc resistance, and then one DC circuit breaker is opened, so the timing of opening and closing them is not so strict. Maybe,
There is almost no risk of damage to the DC circuit breaker or the switch itself due to the relative timing difference.
【００２０】[0020]
【実施例】次に、図１を参照して、本発明による超電導
コイルシステムの一実施例およびその運転方法を説明す
る。図１は、本発明による超電導コイル保護装置を備え
た超電導コイルシステムの実施例の系統構成を示す図で
ある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the superconducting coil system according to the present invention and its operating method will be described with reference to FIG. FIG. 1 is a diagram showing a system configuration of an embodiment of a superconducting coil system including a superconducting coil protection device according to the present invention.
【００２１】《第１実施例》保護対象の超電導コイル１
には、保護抵抗２が並列接続されており、励磁電源３か
らは、直流遮断器４を介して、エネルギーすなわち直流
電力が供給されている。本発明では、このような超電導
コイルシステムの基本回路に対して、少なくとも１つの
開閉器６を、直流遮断器４と並列に接続してある。制御
回路８は、超電導コイル１のクエンチを検出するクエン
チ検出器７の検出信号に基づき、直流遮断器４および開
閉器６の開閉を制御する。<< First Embodiment >> Superconducting coil 1 to be protected
A protection resistor 2 is connected in parallel to the power supply circuit 2, and energy, that is, DC power is supplied from an excitation power supply 3 via a DC circuit breaker 4. In the present invention, at least one switch 6 is connected in parallel with the DC circuit breaker 4 to the basic circuit of such a superconducting coil system. The control circuit 8 controls the opening and closing of the DC breaker 4 and the switch 6 based on the detection signal of the quench detector 7 that detects the quench of the superconducting coil 1.
【００２２】なお、ここでは図示していないが、開閉器
６全体を流れる電流を検出する電流検出器を設置し、そ
の検出電流を制御回路８に取り込み、開閉器６の開閉の
タイミングを決定するために用いることもできる。Although not shown here, a current detector for detecting a current flowing through the switch 6 as a whole is installed, and the detected current is taken into the control circuit 8 to determine the opening / closing timing of the switch 6. Can also be used for
【００２３】このように構成された第１実施例におい
て、通常運転時には、直流遮断器４は開放し、開閉器６
に直流大電流Ｉ0を連続通電しておく。In the first embodiment thus constructed, the DC breaker 4 is opened and the switch 6 is opened during normal operation.
A large DC current I 0 is continuously applied to the.
【００２４】さて、超電導コイル１にクエンチが発生す
ると、クエンチ検出器７がそれを検出し、制御回路８に
検出信号を送る。制御回路８は、クエンチ検出信号の入
力に応じて、直流遮断器４に投入指令を与え、直流遮断
器４を投入させる。直流遮断器４が投入されると、今ま
で開閉器６を流れていた直流電流Ｉ0は、直流遮断器４
にシフトすることになる。開閉器６に流れる電流Ｉ
1と、直流遮断器４に流れる電流Ｉ2との比は、開閉器６
の内部抵抗をｒ1とし、直流遮断器４の内部抵抗をｒ2と
すると、 Ｉ1：Ｉ2＝ｒ2：ｒ1………（１） となる。ここで、ｒ1〉〉ｒ2である、すなわち、開閉器
６の抵抗値が直流遮断器４の抵抗値よりもかなり大きい
とすれば、直流電流Ｉ0は、大部分直流遮断器４に流れ
る。When a quench occurs in the superconducting coil 1, the quench detector 7 detects it and sends a detection signal to the control circuit 8. The control circuit 8 gives a closing instruction to the DC circuit breaker 4 in response to the input of the quench detection signal, and causes the DC circuit breaker 4 to be closed. When the DC breaker 4 is turned on, the DC current I 0 flowing through the switch 6 until now is changed to the DC breaker 4
Will be shifted to. Current I flowing through switch 6
The ratio of 1 to the current I 2 flowing through the DC circuit breaker 4 is
Let r 1 be the internal resistance of r and r 2 be the internal resistance of the DC circuit breaker 4, then I 1 : I 2 = r 2 : r 1 (1) Here, if r 1 >>> r 2, that is, if the resistance value of the switch 6 is considerably larger than the resistance value of the DC circuit breaker 4, the DC current I 0 mostly flows to the DC circuit breaker 4. .
【００２５】次に、開閉器６に流れる設計上の電流が０
に近くなった時点で、または、開閉器６に実際に流れる
電流が０に近くなったことを図示していない電流検出器
により検出した時点で、制御回路８は開閉器６に開放指
令信号を与え、開閉器６を開かせる。開閉器６が開放さ
れると、通常時には開放器６を流れていた直流大電流Ｉ
0は、完全に直流遮断器４に移ったことになる。Next, the designed current flowing through the switch 6 is zero.
The control circuit 8 sends an opening command signal to the switch 6 when the current detector (not shown) detects that the current actually flowing in the switch 6 is close to 0. Then, the switch 6 is opened. When the switch 6 is opened, the large DC current I flowing through the opener 6 at normal times
0 means that the DC circuit breaker 4 has been completely transferred.
【００２６】以上の一連の動作の後、制御回路８からの
遮断指令により、直流遮断器４は、直流電流を遮断す
る。したがって、超電導コイル１に蓄積されていたエネ
ルギーは、保護抵抗２により適切に消費され、超電導コ
イル１のクエンチ時の保護が可能となる。After the above series of operations, the DC breaker 4 cuts off the DC current in response to a breaking command from the control circuit 8. Therefore, the energy stored in the superconducting coil 1 is appropriately consumed by the protection resistor 2, and the superconducting coil 1 can be protected during quenching.
【００２７】第１実施例においては、超電導コイル保護
装置を安価な少なくとも１つの開閉器６と１台の直流遮
断器４とで構成してあり、通常運転時には、開閉器６側
に連続大電流を流し、直流遮断器４には連続通電するこ
となく、クエンチ発生時のみ直流遮断器４に通電し、そ
の後は直ぐに遮断動作に入るようにしている。In the first embodiment, the superconducting coil protection device is composed of at least one inexpensive switch 6 and one DC breaker 4, and at the time of normal operation, a continuous large current flows to the switch 6 side. The DC circuit breaker 4 is not energized continuously, but the DC circuit breaker 4 is energized only when a quench occurs, and immediately after that, the breaking operation is started.
【００２８】ここでは、高価な直流遮断器４は１台のみ
で、安価な開閉器６を併設してあるので、超電導コイル
システム全体としては、大幅なコストダウンが可能であ
る。Here, since only one expensive DC circuit breaker 4 is provided and the inexpensive switch 6 is installed, the cost of the superconducting coil system as a whole can be significantly reduced.
【００２９】また、クエンチ発生時には、１台の直流遮
断器４を一旦投入し、開閉器６側の電流がほぼ０になっ
たところでこれらの開閉器６を開き、それから１台の直
流遮断器４を開くことから、それらの開閉のタイミング
は、複数の直流遮断器を同期させて開閉する必要があっ
た従来例と比較して、それほど厳密でなくてもよく、相
対的開閉タイミングのずれによる直流遮断器４や開閉器
６自体の損傷のおそれがほとんどない。Further, when a quench occurs, one DC breaker 4 is once turned on, and when the current on the side of the switch 6 becomes almost 0, these switches 6 are opened, and then one DC breaker 4 is opened. As compared with the conventional example in which it is necessary to synchronize a plurality of DC circuit breakers to open and close, the opening and closing timings of them are not so strict, and the DC There is almost no risk of damage to the circuit breaker 4 or the switch 6 itself.
【００３０】《第２実施例》第２実施例の基本的系統構
成は、第１実施例と変わらない。通常運転時にも、直流
遮断器４を投入しておく点が異なるだけである。<< Second Embodiment >> The basic system configuration of the second embodiment is the same as that of the first embodiment. The only difference is that the DC breaker 4 is closed even during normal operation.
【００３１】保護対象の超電導コイル１には、保護抵抗
２が並列接続されており、励磁電源３からは、直流遮断
器４を介して、エネルギーすなわち直流電力が供給され
ている。このような超電導コイルシステムの基本回路に
対して、少なくとも１つの開閉器６を、直流遮断器４と
並列に接続してある。制御回路８は、超電導コイル１の
クエンチを検出するクエンチ検出器７の検出信号に基づ
き、直流遮断器４および開閉器６の開閉を制御する。A protection resistor 2 is connected in parallel to the superconducting coil 1 to be protected, and energy, that is, DC power is supplied from an exciting power source 3 via a DC breaker 4. At least one switch 6 is connected in parallel with the DC circuit breaker 4 to the basic circuit of such a superconducting coil system. The control circuit 8 controls the opening and closing of the DC breaker 4 and the switch 6 based on the detection signal of the quench detector 7 that detects the quench of the superconducting coil 1.
【００３２】なお、ここでは図示していないが、開閉器
６全体を流れる電流を検出する電流検出器を設置し、そ
の検出電流を制御回路８に取り込み、直流遮断器４への
電流のシフト完了を判定するために用いることもでき
る。Although not shown here, a current detector for detecting the current flowing through the switch 6 as a whole is installed, and the detected current is taken into the control circuit 8 to complete the shift of the current to the DC circuit breaker 4. Can also be used to determine
【００３３】このように構成された第２実施例におい
て、通常運転時には、直流遮断器４も投入し、開閉器６
に大電流を流すことはもちろんであるが、直流遮断器４
にもその定格内の電流を分流させておく。開閉器６と直
流遮断器４との分流の比率は、それぞれ適切な内部抵抗
の機種を選択すると、設定できる。すなわち、通常運転
時に、開閉器６に流れる電流Ｉ3と、直流遮断器４に流
れる電流Ｉ4との比は、開閉器６の内部抵抗をｒ3とし、
直流遮断器４の内部抵抗をｒ4とすると、 Ｉ3：Ｉ4＝ｒ4：ｒ3………（２） となる。開閉器６と直流遮断器４との直流の分流の比率
は、それぞれ適切な内部抵抗ｒ3，内部抵抗ｒ4の機種を
選択すると、正確に設定可能である。In the second embodiment thus constructed, the DC circuit breaker 4 is also turned on during normal operation, and the switch 6
Of course, a large current is applied to the DC circuit breaker 4.
Also, divide the current within that rating. The shunt ratio of the switch 6 and the DC breaker 4 can be set by selecting a model having an appropriate internal resistance. That is, during normal operation, the current I 3 flowing through the switch 6, the ratio of the current I 4 flowing through the DC circuit breaker 4, the internal resistance of the switch 6 and r 3,
If the internal resistance of the DC breaker 4 is r 4 , then I 3 : I 4 = r 4 : r 3 (2) The ratio of the DC shunt between the switch 6 and the DC circuit breaker 4 can be accurately set by selecting appropriate models of the internal resistance r 3 and the internal resistance r 4 .
【００３４】さて、超電導コイル１にクエンチが発生す
ると、クエンチ検出器７がそれを検出し、制御回路８に
検出信号を送る。制御回路８は、クエンチ検出信号の入
力に応じて、開閉器６に開放指令を与え、開閉器６を開
放させる。開閉器６のアーク抵抗により、今まで開閉器
６を流れていた直流電流は、直流遮断器４にシフトす
る。クエンチ時に開かれる開閉器６のアークの抵抗値ｒ
aが直流遮断器４の抵抗値ｒ4よりもかなり大きい、すな
わち、ｒa〉〉ｒ4であるから、直流電流Ｉ0は、直流遮
断器４にシフトすることになる。When a quench occurs in the superconducting coil 1, the quench detector 7 detects it and sends a detection signal to the control circuit 8. The control circuit 8 gives an opening command to the switch 6 in response to the input of the quench detection signal to open the switch 6. Due to the arc resistance of the switch 6, the DC current flowing through the switch 6 until now shifts to the DC breaker 4. The resistance value r of the arc of the switch 6 opened at the time of quench
a is considerably larger than the resistance value r 4 of the DC circuit breaker 4, i.e., because it is ra >> r 4, the DC current I 0 will be shifted to the DC circuit breaker 4.
【００３５】開閉器６に流れる設計上の電流が０に近く
なり、または、開閉器６に実際に流れる電流が０に近く
なったことを図示していない電流検出器により検出した
ら、制御回路８からの遮断指令により、直流遮断器４に
より遮断動作を実行する。したがって、超電導コイル１
に蓄積されていたエネルギーは、保護抵抗２により適切
に消費され、超電導コイル１のクエンチ時の保護が可能
となる。When it is detected by a current detector (not shown) that the designed current flowing through the switch 6 is close to 0, or that the current actually flowing through the switch 6 is close to 0, the control circuit 8 In response to a shutoff command from the DC breaker 4, the DC breaker 4 performs a shutoff operation. Therefore, the superconducting coil 1
The energy stored in 1 is appropriately consumed by the protection resistor 2, and the superconducting coil 1 can be protected during quenching.
【００３６】このように、第２実施例においては、通常
運転時にも、直流遮断器４に電流を分流させておくこと
ができるので、クエンチ発生時に、直流遮断器４の投入
操作を行なわずに済む。したがって、クエンチ発生から
直流遮断までの時間を大幅に短縮し、超電導コイル１を
より確実に保護できる。As described above, in the second embodiment, the current can be shunted to the DC circuit breaker 4 even during the normal operation, so that the operation of closing the DC circuit breaker 4 is not performed when the quench occurs. I'm done. Therefore, the time from the occurrence of the quench to the interruption of the direct current can be greatly shortened, and the superconducting coil 1 can be protected more reliably.
【００３７】この場合も、直流遮断器４に大電流を流す
期間を実質的にクエンチ発生時のみに限定するので、通
電容量が小さく経済性の高い直流遮断器４を選定でき、
直流大電流で連続運転される超電導コイル１のクエンチ
時の電流を確実に遮断可能である。すなわち、高価な直
流遮断器４は１台のみで、安価な開閉器６を併設してあ
るから、超電導コイルシステム全体としては、大幅なコ
ストダウンが可能である。Also in this case, since the period during which a large current is passed through the DC circuit breaker 4 is substantially limited only when the quench occurs, it is possible to select the DC circuit breaker 4 having a small current-carrying capacity and high economical efficiency.
It is possible to reliably interrupt the current during quenching of the superconducting coil 1 that is continuously operated with a large DC current. That is, since only one expensive DC circuit breaker 4 is provided and the inexpensive switch 6 is installed, the cost of the superconducting coil system as a whole can be significantly reduced.
【００３８】また、クエンチ発生時には、開閉器６を開
き、そのアーク抵抗により直流遮断器４に大電流をシフ
トさせ、それから１台の直流遮断器４を開くことから、
それらの開閉のタイミングはそれほど厳密でなくてもよ
く、開閉タイミングの相対的ずれによる直流遮断器４や
開閉器６自体の損傷のおそれがほとんどない。When a quench occurs, the switch 6 is opened, a large current is shifted to the DC circuit breaker 4 by its arc resistance, and then one DC circuit breaker 4 is opened.
The opening and closing timings thereof do not have to be so strict, and there is almost no risk of damage to the DC circuit breaker 4 or the switch 6 itself due to the relative deviation of the opening and closing timings.
【００３９】なお、直流遮断器４は、機械的に作動する
もののみならず、サイリスタ等の半導体遮断器でも本発
明を適用可能である。The DC circuit breaker 4 is not limited to one that operates mechanically, and the present invention can be applied to a semiconductor circuit breaker such as a thyristor.
【００４０】[0040]
【発明の効果】本発明によれば、以下の効果が得られ
る。According to the present invention, the following effects can be obtained.
【００４１】（１）高価な直流遮断器は１台のみで、安
価な開閉器を併設してあるので、超電導コイルシステム
全体としては、大幅なコストダウンが可能である。(1) Since there is only one expensive DC circuit breaker and an inexpensive switch is installed, the cost of the superconducting coil system as a whole can be significantly reduced.
【００４２】（２）第１発明および第３発明において、
クエンチ発生時には、１台の直流遮断器を一旦投入し、
開閉器側の電流がほぼ０になったところでこれらの開閉
器を開き、それから１台の直流遮断器を開くことから、
それらの開閉のタイミングはそれほど厳密でなくてもよ
く、相対的開閉タイミングのずれによる直流遮断器や開
閉器自体の損傷のおそれがほとんどない。(2) In the first and third inventions,
When a quench occurs, once turn on one DC breaker,
When the current on the switch side becomes almost 0, open these switches, and then open one DC breaker,
The timing of opening and closing of them does not have to be so strict, and there is almost no risk of damage to the DC circuit breaker or the switch itself due to a shift in relative opening and closing timing.
【００４３】（３）第２発明および第４発明において、
クエンチ発生時には、開閉器の開放時のアーク抵抗を利
用して少なくとも１つの開閉器の電流を直流遮断器にシ
フトさせるから、通常運転時にも、直流遮断器に電流を
分流させてさせておくことができる。この方式では、ク
エンチ発生時に、直流遮断器の投入操作を行なわずに済
むので、クエンチ発生から直流遮断までの時間を大幅に
短縮でき、超電導コイルをより確実に保護できる。(3) In the second and fourth inventions,
When a quench occurs, the arc resistance when the switch is opened is used to shift the current of at least one switch to the DC circuit breaker, so keep the DC circuit breaker shunted during normal operation as well. You can In this method, it is not necessary to turn on the DC circuit breaker when a quench occurs, so the time from the occurrence of a quench to the DC interruption can be greatly shortened, and the superconducting coil can be protected more reliably.
【図１】本発明による超電導コイル保護装置を備えた超
電導コイルシステムの実施例の系統構成を示す図であ
る。FIG. 1 is a diagram showing a system configuration of an embodiment of a superconducting coil system including a superconducting coil protection device according to the present invention.
【図２】従来の基本的な超電導コイルシステムの系統構
成を示す図である。FIG. 2 is a diagram showing a system configuration of a conventional basic superconducting coil system.
【図３】並列接続した直流遮断器を用いる従来の超電導
コイルシステムの系統構成を示す図である。FIG. 3 is a diagram showing a system configuration of a conventional superconducting coil system using DC breakers connected in parallel.
１ 超電導コイル ２ 保護抵抗 ３ 励磁電源 ４ 直流遮断器 ６ 開閉器 ７ クエンチ検出器 ８ 制御回路 1 Superconducting coil 2 Protective resistance 3 Excitation power supply 4 DC breaker 6 Switch 7 Quench detector 8 Control circuit
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｈ０５Ｈ 7/04 ＺＡＡ 9014−2Ｇ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical indication H05H 7/04 ZAA 9014-2G
Claims (4)
からエネルギーの供給を受けるとともに、クエンチが生
じた際にはエネルギーの供給を遮断される超電導コイル
と、前記超電導コイルと並列に接続され、前記超電導コ
イルへのエネルギーの供給が遮断された状態で前記超電
導コイルに蓄積されていたエネルギーを消費し、クエン
チに起因する損傷から前記超電導コイルを保護する保護
抵抗とを備えた超電導コイルシステムにおいて、 前記励磁電源と前記超電導コイルとの間に、通常運転時
に開放され、クエンチが生じた際には一旦投入され、所
定条件が成立した時に再度開放され、前記励磁電源から
前記超電導コイルへのエネルギーの供給を遮断する直流
遮断器を直列に配置するとともに、 前記直流遮断器と並列に、通常運転時に投入され前記励
磁電源からのエネルギーを前記超電導コイルに供給し、
クエンチが生じた際には自らを流れている前記励磁電源
からのエネルギーを前記直流遮断器にシフトさせ、自ら
を流れているエネルギーが所定値以下に減少したら開放
される少なくとも１つの開閉器を設けたことを特徴とす
る超電導コイルシステム。1. An exciting power source, a superconducting coil that receives energy from the exciting power source during normal operation, and is cut off from energy when a quench occurs, and is connected in parallel with the superconducting coil. In the superconducting coil system, which consumes the energy stored in the superconducting coil in a state where the supply of energy to the superconducting coil is cut off, and a protective resistance that protects the superconducting coil from damage caused by quenching, Between the excitation power supply and the superconducting coil, it is opened during normal operation, once turned on when a quench occurs, is opened again when a predetermined condition is established, the energy from the excitation power supply to the superconducting coil. A DC circuit breaker that cuts off the supply is arranged in series, and is turned on in parallel with the DC circuit breaker during normal operation. The energy from the excitation power supply is supplied to the superconducting coil is,
Provided is at least one switch that shifts the energy from the excitation power source flowing through itself to the DC circuit breaker when a quench occurs, and opens when the energy flowing through itself decreases below a predetermined value. A superconducting coil system characterized by that.
からエネルギーの供給を受けるとともに、クエンチが生
じた際にはエネルギーの供給を遮断される超電導コイル
と、前記超電導コイルと並列に接続され、前記超電導コ
イルへのエネルギーの供給が遮断された状態で前記超電
導コイルに蓄積されていたエネルギーを消費し、クエン
チに起因する損傷から前記超電導コイルを保護する保護
抵抗とを備えた超電導コイルシステムにおいて、 前記励磁電源と前記超電導コイルとの間に、通常運転時
に投入され前記励磁電源からのエネルギーを前記超電導
コイルに供給し、前記クエンチが生じた際には所定条件
が成立した時に開放され、前記励磁電源から前記超電導
コイルへのエネルギーの供給を遮断する直流遮断器を直
列に配置するとともに、 前記直流遮断器と並列に、通常運転時に投入され前記励
磁電源からのエネルギーを前記超電導コイルに供給し、
クエンチが生じた際には前記直流遮断器に先立って開放
され自らを流れている前記励磁電源からのエネルギーを
前記直流遮断器にシフトさせる少なくとも１つの開閉器
を設けたことを特徴とする超電導コイルシステム。2. An exciting power source, a superconducting coil that receives energy supply from the exciting power source during normal operation, and is cut off from energy supply when a quench occurs, and is connected in parallel with the superconducting coil. In the superconducting coil system, which consumes the energy stored in the superconducting coil in a state where the supply of energy to the superconducting coil is cut off, and a protective resistance that protects the superconducting coil from damage caused by quenching, Between the excitation power source and the superconducting coil, the energy from the excitation power source is supplied to the superconducting coil during normal operation, and when the quench occurs, it is opened when a predetermined condition is satisfied, and the excitation is performed. With a DC circuit breaker arranged in series to cut off the supply of energy from the power supply to the superconducting coil, Serial parallel with the DC circuit breaker is put in normal operation to supply energy from the exciting power source to the superconducting coil,
A superconducting coil, which is provided with at least one switch that shifts energy from the excitation power supply flowing through itself, which is opened prior to the DC circuit breaker, to the DC circuit breaker when a quench occurs. system.
にエネルギーを供給し前記超電導コイルを励磁する一
方、クエンチが生じた際にはエネルギーの供給を遮断
し、前記超電導コイルに蓄積されていたエネルギーを前
記超電導コイルに並列接続された保護抵抗に消費させ、
クエンチに起因する損傷から前記超電導コイルを保護す
る超電導コイルシステムの運転方法において、 通常運転時には、前記励磁電源と前記超電導コイルとの
間に配置された直流遮断器を開放し、前記直流遮断器に
並列に接続された少なくとも１つの開閉器を介して前記
励磁電源からのエネルギーを前記超電導コイルに供給
し、 クエンチが生じた際には、前記直流遮断器を一旦投入し
て前記開閉器を流れているエネルギーを前記直流遮断器
にシフトさせ、前記開閉器を開放し、前記直流遮断器を
流れていたエネルギーが所定値に減少したら前記直流遮
断器を開放して前記超電導コイルへのエネルギーの供給
を遮断し、その後、前記超電導コイルに蓄積されていた
エネルギーを前記保護抵抗に消費させることを特徴とす
る超電導コイルシステムの運転方法。3. During normal operation, energy is supplied from an exciting power source to the superconducting coil to excite the superconducting coil, and when a quench occurs, the energy supply is shut off and the energy stored in the superconducting coil is stored. The protective resistance connected in parallel to the superconducting coil,
In a method of operating a superconducting coil system that protects the superconducting coil from damage caused by a quench, during normal operation, the DC breaker disposed between the excitation power source and the superconducting coil is opened to the DC breaker. Energy from the excitation power source is supplied to the superconducting coil through at least one switch connected in parallel, and when a quench occurs, the DC circuit breaker is once closed to flow through the switch. Existing energy is shifted to the DC circuit breaker, the switch is opened, and when the energy flowing through the DC circuit breaker decreases to a predetermined value, the DC circuit breaker is opened to supply energy to the superconducting coil. The superconducting coil system is characterized in that the energy is stored in the superconducting coil, and then the energy is accumulated in the superconducting coil. The method of operation.
にエネルギーを供給し前記超電導コイルを励磁する一
方、クエンチが生じた際にはエネルギーの供給を遮断
し、前記超電導コイルに蓄積されていたエネルギーを前
記超電導コイルに並列接続された保護抵抗に消費させ、
クエンチに起因する損傷から前記超電導コイルを保護す
る超電導コイルシステムの運転方法において、 通常運転時には、前記励磁電源と前記超電導コイルとの
間に配置された直流遮断器および当該直流遮断器と並列
に接続されている少なくとも１つの開閉器を介して前記
励磁電源からのエネルギーを前記超電導コイルに供給
し、 クエンチが生じた際には、前記開閉器を開放し、前記励
磁電源からのエネルギーを前記直流遮断器にシフトさ
せ、前記直流遮断器を流れていたエネルギーが所定値に
減少したら前記直流遮断器を開放して前記超電導コイル
へのエネルギーの供給を遮断し、その後、前記超電導コ
イルに蓄積されていたエネルギーを前記保護抵抗に消費
させることを特徴とする超電導コイルシステムの運転方
法。4. The energy stored in the superconducting coil is cut off when a quench occurs while supplying energy from an exciting power supply to the superconducting coil during normal operation to excite the superconducting coil. The protective resistance connected in parallel to the superconducting coil,
In a method for operating a superconducting coil system that protects the superconducting coil from damage caused by a quench, during normal operation, a DC circuit breaker arranged between the excitation power source and the superconducting coil and the DC circuit breaker are connected in parallel. The energy from the excitation power supply is supplied to the superconducting coil through at least one switch that is installed, and when a quench occurs, the switch is opened to cut off the energy from the excitation power supply to the direct current. The energy was flowing through the DC circuit breaker to a predetermined value, the DC circuit breaker was opened to cut off the supply of energy to the superconducting coil, and then stored in the superconducting coil. A method for operating a superconducting coil system, characterized in that energy is consumed by the protective resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6286534A JP2724321B2 (en) | 1994-11-21 | 1994-11-21 | Superconducting coil system and operating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6286534A JP2724321B2 (en) | 1994-11-21 | 1994-11-21 | Superconducting coil system and operating method thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1176037A Division JPH0340409A (en) | 1989-07-07 | 1989-07-07 | Superconducting coil system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07192913A true JPH07192913A (en) | 1995-07-28 |
| JP2724321B2 JP2724321B2 (en) | 1998-03-09 |
Family
ID=17705659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6286534A Expired - Fee Related JP2724321B2 (en) | 1994-11-21 | 1994-11-21 | Superconducting coil system and operating method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2724321B2 (en) |
-
1994
- 1994-11-21 JP JP6286534A patent/JP2724321B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2724321B2 (en) | 1998-03-09 |
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