JPH0513222A - Superconducting coil device - Google Patents
Superconducting coil deviceInfo
- Publication number
- JPH0513222A JPH0513222A JP3189480A JP18948091A JPH0513222A JP H0513222 A JPH0513222 A JP H0513222A JP 3189480 A JP3189480 A JP 3189480A JP 18948091 A JP18948091 A JP 18948091A JP H0513222 A JPH0513222 A JP H0513222A
- Authority
- JP
- Japan
- Prior art keywords
- superconducting coil
- switchgear
- current
- circuit
- parallel
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/001—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for superconducting apparatus, e.g. coils, lines, machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
- H02H3/023—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order by short-circuiting
-
- 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
- Details Of Resistors (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は核融合装置、加速器及び
超電導エネルギ貯蔵装置等のような各種超電導コイル装
置に係り、特にその負荷となる超電導コイルが常電導転
移（クエンチ）などの異常状態になつた時の保護装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various superconducting coil devices such as a nuclear fusion device, an accelerator and a superconducting energy storage device. In particular, the load on the superconducting coil device is in an abnormal state such as normal conduction transition (quenching). The present invention relates to a protection device for when the fish is lit up.
【０００２】[0002]
【従来の技術】最近、核融合装置、加速器及び超電導エ
ネルギ貯蔵装置等の各分野において、超電導コイル装置
の応用が急速に広まりつつある。超電導コイルは、通常
は超電導状態でその電気抵抗が零であるが、磁界の急変
や温度の異常等によつて超電導状態から常電導状態に転
移することがある。この超電導状態が破壊される現象
は、クエンチと呼ばれるが、この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に到る恐
れがある。2. Description of the Related Art Recently, applications of superconducting coil devices are rapidly spreading in various fields such as nuclear fusion devices, accelerators, and superconducting energy storage devices. The superconducting coil normally has an electric resistance of zero in the superconducting state, but may change from the superconducting state to the normal conducting state due to a sudden change in the magnetic field or an abnormal temperature. The phenomenon in which the superconducting state is destroyed is called quenching. When this quenching occurs, however, there is a risk that the pressure will increase due to abnormal evaporation of liquid helium or the like.
【０００３】このため、図４に示すように、励磁電源と
しての交直変換装置６から電力を供給される超電導コイ
ル２において、超電導コイル２と並列に保護抵抗器３を
接続し、クエンチが発生した場合、超電導コイル２に蓄
積されたエネルギを保護抵抗器３で消費し、クエンチの
拡大を抑制して超電導コイル２を保護する方式が採用さ
れている。すなわち、クエンチが発生したとき、交直変
換装置６と超電導コイル２とで構成されるループ回路に
流れていた超電導コイル電流を保護抵抗器３にシフトさ
せるが、この時に直流大電流を遮断する直流遮断装置４
が必要となる。特に最近は、超電導コイル装置の大型化
が進み、超電導コイル２に流す電流も大電流化する傾向
にあり、連続運転を目指す超電導コイル装置が増えてい
る。一方、超電動コイルにクエンチなどが発生すると、
高電圧が発生するため、クエンチ保護用に使用される上
記直流遮断装置４も、直流大電流の遮断が可能で、しか
も連続運転できる高圧型の遮断装置であることが条件と
なる。Therefore, as shown in FIG. 4, in the superconducting coil 2 supplied with electric power from the AC / DC converter 6 as the excitation power source, the protective resistor 3 is connected in parallel with the superconducting coil 2 to cause quench. In this case, a method is adopted in which the energy stored in the superconducting coil 2 is consumed by the protective resistor 3 and the expansion of the quench is suppressed to protect the superconducting coil 2. That is, when a quench occurs, the superconducting coil current flowing in the loop circuit composed of the AC / DC converter 6 and the superconducting coil 2 is shifted to the protective resistor 3, but at this time, a DC interruption is performed to interrupt a large DC current. Device 4
Is required. Particularly in recent years, the size of the superconducting coil device has been increasing, and the current flowing through the superconducting coil 2 has tended to increase, and the number of superconducting coil devices aiming for continuous operation is increasing. On the other hand, if a quench etc. occurs in the super electric coil,
Since a high voltage is generated, the above DC interrupting device 4 used for quench protection must be a high voltage interrupting device capable of interrupting a large DC current and capable of continuous operation.
【０００４】ところが、一般に高圧型の直流遮断装置は
小電流しか扱えず、逆に大電流を扱える直流遮断装置は
低圧型である。したがつて、１台の直流遮断装置では連
続大電流通電に耐えられず、図５に示すように、複数台
の高圧型直流遮断装置４Ａ〜４Ｎを並列に接続したもの
を使用していた。なお、この種の従来装置は例えば特開
昭５７−１９８６１３号公報に開示されている。However, in general, a high voltage type DC interrupting device can handle only a small current, while a DC interrupting device capable of handling a large current is a low voltage type. Therefore, one DC breaker cannot withstand continuous high-current energization, and a plurality of high-voltage DC breakers 4A to 4N are connected in parallel as shown in FIG. A conventional device of this type is disclosed in, for example, Japanese Patent Laid-Open No. 57-198613.
【０００５】しかしながら、この図５に示す従来装置に
おいては、複数台の高圧型直流遮断装置が必要であるた
め、保護装置としては非常に高価となるばかりでなく、
その設置スペースも増大するという問題があつた。ま
た、並列に接続された複数台の直流遮断装置を同時に遮
断させることは困難で、遮断動作タイミングのばらつき
に起因する遮断失敗により直流遮断装置自体や回路構成
機器を損傷する問題もあつた。However, in the conventional device shown in FIG. 5, since a plurality of high-voltage type DC circuit breakers are required, not only is it extremely expensive as a protective device,
There is a problem that the installation space also increases. Further, it is difficult to simultaneously disconnect a plurality of DC interrupting devices connected in parallel, and there is also a problem that the DC interrupting device itself and circuit components are damaged due to failure in interrupting due to variations in interrupting operation timing.
【０００６】そこで、図６に示すような直流遮断方式が
近時提案されている。すなわち、直流遮断装置４と並列
に、微小抵抗器１０と開閉装置１１の直列回路を接続す
る構成とし、超電導コイル２を交直変換装置６で励磁し
ている時は、直流遮断装置４は開路状態、開閉装置１１
は閉路状態としておき、この状態でクエンチの発生によ
り超電導コイル電流を遮断する場合は、直流遮断装置４
を先ず閉路し、微小抵抗器１０と開閉装置１１の直列回
路を短絡して超電導コイル電流を殆んど直流遮断装置４
に移した後、開閉装置１１を開路し、最後に直流遮断装
置４を開路することによつて直流大電流の遮断を可能と
するものである。なお、この種の公知例としては特開平
１−４０４０９号公報がある。Therefore, a DC cutoff method as shown in FIG. 6 has been proposed recently. That is, the DC circuit breaker 4 is connected in parallel with the series circuit of the small resistor 10 and the switch device 11, and when the superconducting coil 2 is excited by the AC / DC converter 6, the DC circuit breaker 4 is in the open state. Switchgear 11
Is closed, and when the superconducting coil current is interrupted by the occurrence of quench in this condition, the DC interrupting device 4
Is closed first, and the series circuit of the small resistor 10 and the switchgear 11 is short-circuited so that the superconducting coil current is almost completely cut off by the DC breaker 4.
After that, the switchgear 11 is opened, and finally the DC interrupter 4 is opened so that a large DC current can be interrupted. As a known example of this type, there is JP-A-1-40409.
【０００７】その他、特開昭５８−９５８０３号公報に
は、超電導コイルや保護抵抗器と並列にスイツチとコン
デンサの直列回路を接続するものが開示されている。し
かし、このスイツチはクエンチ時にオンしてコンデンサ
を保護抵抗器に並列接続し、保護抵抗器のインダクタン
ス分によつて発生しようとするサージ電圧を上記コンデ
ンサで吸収させるためのもので、励磁電源を短絡し超電
導コイル電流をスイツチとコンデンサの直列回路にシフ
トしてこれを遮断する機能を果たすものではない。In addition, Japanese Patent Laid-Open No. 58-95803 discloses a device in which a series circuit of a switch and a capacitor is connected in parallel with a superconducting coil or a protective resistor. However, this switch is turned on at the time of quench to connect the capacitor in parallel with the protection resistor so that the surge voltage that is generated due to the inductance of the protection resistor is absorbed by the capacitor and the excitation power supply is short-circuited. However, it does not fulfill the function of shifting the superconducting coil current to the series circuit of the switch and the capacitor to interrupt it.
【０００８】[0008]
【発明が解決しようとする課題】図６に示した直流遮断
方式においては、連続通電機能を開閉装置１１に持た
せ、クエンチなどの異常発生時における遮断機能を直流
遮断装置４に持たせているため、高圧型直流遮断装置１
台でクエンチ保護が可能である。しかしながら、直流遮
断時に直流遮断装置４の閉路によつて超電導コイル電流
を開閉装置１１から直流遮断装置４にシフトさせるため
に微小抵抗器１０を開閉装置１１と直列に設ける必要が
あるため、連続通電時、すなわち常時この微小抵抗器１
０によるジユール損失が発生し続けることになり、その
分効率が低下するという問題があつた。 したがつて、
本発明の目的は、直流大電流で連続運転が可能で、クエ
ンチなどの異常発生時には直流大電流を確実に遮断して
保護抵抗器にシフトでき、しかも高効率の保護装置を備
えた超電導コイル装置を提供することにある。In the direct current interruption system shown in FIG. 6, the switchgear 11 is provided with a continuous energizing function, and the direct current interruption device 4 is provided with an interruption function when an abnormality such as a quench occurs. Therefore, the high voltage type DC circuit breaker 1
Quench protection is possible on the platform. However, in order to shift the superconducting coil current from the switchgear 11 to the DC breaker 4 by closing the DC breaker 4 at the time of DC cutoff, it is necessary to provide the minute resistor 10 in series with the switchgear 11, so that continuous energization is performed. Time, that is, this small resistor 1
There is a problem in that the efficiency loss is reduced by the amount of jyuru loss caused by zero. Therefore,
An object of the present invention is to provide a superconducting coil device capable of continuous operation with a large DC current, capable of reliably blocking the large DC current and shifting to a protective resistor when an abnormality such as a quench occurs, and having a highly efficient protective device. To provide.
【０００９】[0009]
【課題を解決するための手段】上記した目的を達成する
ため、本発明は、励磁電源から第１の開閉装置を介して
直流電力を供給される超電導コイルと、この超電導コイ
ルと並列に接続された保護抵抗器とを備え、超電導コイ
ルのクエンチなどの異常発生時に超電導コイルに蓄積さ
れたエネルギを保護抵抗器で消費させるようにした超電
導コイル装置において、保護抵抗器と並列に直流遮断装
置を接続し、この直流遮断装置を通常時は開路状態とし
ておき、クエンチなどの異常発生時には閉路して超電導
コイル電流を励磁電源から直流遮断装置にシフトさせ、
その後第１の開閉装置を開路した後に直流遮断装置を開
路する制御装置を設けたことを特徴とする。In order to achieve the above object, the present invention relates to a superconducting coil which is supplied with DC power from an exciting power source through a first switchgear, and is connected in parallel with the superconducting coil. In a superconducting coil device in which the protection resistor consumes energy accumulated in the superconducting coil when an abnormality such as quench of the superconducting coil occurs, connect a DC circuit breaker in parallel with the protection resistor. Then, this DC interrupting device is normally opened, and when an abnormality such as a quench occurs, it is closed to shift the superconducting coil current from the exciting power source to the DC interrupting device,
After that, a control device is provided which opens the first switchgear and then opens the DC interrupting device.
【００１０】[0010]
【作用】本発明は上記の如く構成され、直流遮断装置は
通常時は開路状態となつているので、第１の開閉装置に
より連続通電を行なわせることができ、また励磁電源、
例えば交直変換装置を構成する半導体素子などには、導
通時でも順方向電圧降下が発生しているので、クエンチ
などの異常発生時には直流遮断装置を閉路することによ
り、上記電圧降下を利用して超電導コイル電流を励磁電
源から直流遮断装置にシフトさせることができ、その後
第１の開閉装置を開路した後に直流遮断装置を開路する
ことにより超電導コイル電流を遮断して保護抵抗器にシ
フトすることができる。The present invention is constructed as described above, and since the DC interrupting device is normally open, the first switching device can be continuously energized, and the exciting power source,
For example, a semiconductor element that constitutes an AC-DC converter has a forward voltage drop even when it is conducting.Therefore, when an abnormality such as a quench occurs, the DC cutoff device is closed to use the voltage drop to superconduct. The coil current can be shifted from the excitation power source to the DC interrupting device, and then the first switching device can be opened and then the DC interrupting device can be opened to interrupt the superconducting coil current and shift it to the protective resistor. .
【００１１】[0011]
【実施例】以下、本発明の実施例を図面について説明す
る。Embodiments of the present invention will now be described with reference to the drawings.
【００１２】図１は本発明の一実施例を示す超電導コイ
ル装置の回路構成図である。この図１において、２はク
エンチ検出器１を備えた超電導コイル、３は保護抵抗
器、４は直流遮断装置で、これらは互に並列に接続さ
れ、さらにこれらの並列回路と並列に第１の開閉装置５
と交直変換装置６の直列回路が接続された上、上記各構
成機器を制御するための制御装置７が配設されている。
直流遮断装置４は直流遮断器単体から構成されたもので
も良いし、また直流遮断時に電流零点を作るための転流
回路（コンデンサ、リアクトルおよび始動スイツチから
構成される）と直流遮断器単体を並列接続して構成され
たものでも良い。交直変換装置６は半導体素子から構成
され、交流電力系統と超電導コイル２の間に接続され
て、超電導コイル２へのエネルギの注入および超電導コ
イル２から交流電力系統へのエネルギの放出を行なう電
源として作用する。FIG. 1 is a circuit diagram of a superconducting coil device showing an embodiment of the present invention. In FIG. 1, 2 is a superconducting coil equipped with a quench detector 1, 3 is a protective resistor, 4 is a direct-current interruption device, which are connected in parallel with each other, and further in parallel with these parallel circuits. Switchgear 5
A serial circuit of the AC / DC converter 6 is connected, and a control device 7 for controlling each of the above components is provided.
The DC breaker 4 may be composed of a DC breaker alone, or a DC commutator circuit (consisting of a capacitor, a reactor and a starting switch) for creating a current zero point at DC break and a DC breaker alone are connected in parallel. It may be configured by connecting. The AC / DC converter 6 is composed of a semiconductor element, is connected between the AC power system and the superconducting coil 2, and serves as a power source for injecting energy into the superconducting coil 2 and releasing energy from the superconducting coil 2 into the AC power system. To work.
【００１３】このように構成された超電導コイル装置に
おいて、通常運転時には第１の開閉装置５は閉路状態、
直流遮断装置４は開路状態であり、超電導コイル２は磁
気エネルギの形態でエネルギを貯蔵する一方、交直変換
装置６は超電導コイル２へのエネルギの注入および超電
導コイル２から交流電力系統へのエネルギの放出を行な
つている。In the superconducting coil device thus constructed, the first switchgear 5 is closed during normal operation.
The DC interrupting device 4 is in an open state, the superconducting coil 2 stores energy in the form of magnetic energy, while the AC / DC converter 6 injects energy into the superconducting coil 2 and transfers energy from the superconducting coil 2 to the AC power system. It is releasing.
【００１４】いま、超電導コイル２にクエンチが発生し
たとすると、これはクエンチ検出器１によつて検出さ
れ、その検出信号は制御装置７に送られ、制御装置７で
はこの検出信号を受けてクエンチ保護に対応する連動動
作指令を各構成機器に出力する。まず、交直変換装置６
では、制御装置７からの指令を受けて交直変換装置６自
身を短絡状態とするバイパスペア運転に入るが、このバ
イパスペア運転に入つても、交直変換装置６を構成する
半導体素子には順方向に電圧降下（ＦＶＤ）があり、ま
た盤内配線ブスなどによる電圧降下もあつて、交直変換
装置６の出力端子間には数Ｖ以上の電圧が発生する。次
に、直流遮断装置４が閉路し、これによつて交直変換装
置６は短絡されるので、交直変換装置６を流れていた超
電導コイル電流はこの直流遮断装置４にシフトされる。
ここで第１の開閉装置５が開路した後に、直流遮断装置
４が開路することにより、超電導コイル電流は遮断され
て保護抵抗器３にシフトされ、ジユール熱となつて消費
されるので、クエンチの拡大を抑制することができる。Now, if a quench occurs in the superconducting coil 2, this is detected by the quench detector 1, and the detection signal is sent to the control device 7, and the control device 7 receives the detection signal and quenches. Outputs a linked operation command corresponding to protection to each component. First, the AC / DC converter 6
Then, in response to a command from the control device 7, the bypass pair operation in which the AC / DC converter 6 itself is short-circuited is started, but even if this bypass pair operation is entered, the semiconductor elements constituting the AC / DC converter 6 are forwardly forwarded. There is a voltage drop (FVD) in the device and also a voltage drop due to a wiring bus in the panel, etc., so that a voltage of several volts or more is generated between the output terminals of the AC / DC converter 6. Next, the DC interrupting device 4 is closed, and thereby the AC / DC converter 6 is short-circuited, so that the superconducting coil current flowing through the AC / DC converter 6 is shifted to the DC interrupting device 4.
Here, after the first switchgear 5 is opened, the DC interrupter 4 is opened, so that the superconducting coil current is interrupted and shifted to the protective resistor 3, which is consumed as jule heat. Expansion can be suppressed.
【００１５】本実施例によれば、クエンチ発生時に超電
導コイル電流を遮断する直流遮断装置４としては短時間
定格のものを使用すれば良く、したがつて大電流の直流
遮断が可能になると共に、交直変換装置６の電圧降下を
利用したので、図６に示す従来例のように微小抵抗器を
必要せず、したがつてこの微小抵抗器で常時発生してい
たジユール損失がなくなり、装置全体の効率を向上する
ことができる。なお、超電導コイル電流の値が数＋ｋＡ
程度であれば、本実施例の適用により１台の直流遮断装
置で対応可能であり、図５に示す従来例のように複数台
の直流遮断装置を使用した場合における複数台同時遮断
時の遮断動作タイミングのばらつきによる遮断失敗など
の問題を解決することもできる。According to the present embodiment, the DC interrupting device 4 for interrupting the superconducting coil current at the time of occurrence of a quench may be of a short-time rating, so that it is possible to interrupt the DC of a large current. Since the voltage drop of the AC / DC converter 6 is utilized, a microresistor is not required as in the conventional example shown in FIG. The efficiency can be improved. The value of the superconducting coil current is several + kA
As long as the application of this embodiment is possible, a single DC circuit breaker can be used, and when a plurality of DC circuit breakers are used as in the conventional example shown in FIG. It is also possible to solve problems such as interruption failure due to variations in operation timing.
【００１６】図２は本発明の他の実施例を示す超電導コ
イル装置の回路構成図である。この実施例では、図１の
実施例に加えて、さらに直流遮断装置４と直列に直流電
流検出器８が配設されている。この直流電流検出器８
は、直流遮断装置４が閉路した後、交直変換装置６から
直流遮断装置４にシフトされてくる超電導コイル電流を
主に検出するもので、その検出信号は制御装置７に送ら
れ、その値が所定のレベル以上に達した時点で制御装置
７から第１の開閉装置５に開路指令が出力される。した
がつて、第１の開閉装置５は必要以上の残留直流電流を
切る必要がなくなり、その電極の損傷を抑制することが
できる。FIG. 2 is a circuit diagram of a superconducting coil device showing another embodiment of the present invention. In this embodiment, in addition to the embodiment of FIG. 1, a DC current detector 8 is further arranged in series with the DC interrupting device 4. This DC current detector 8
Mainly detects the superconducting coil current that is shifted from the AC / DC converter 6 to the DC interrupting device 4 after the DC interrupting device 4 is closed. The detection signal is sent to the control device 7 and its value is When the voltage reaches a predetermined level or higher, the control device 7 outputs an open circuit command to the first switching device 5. Therefore, the first switchgear 5 does not need to turn off the residual DC current more than necessary, and the damage to the electrode can be suppressed.
【００１７】図３は本発明のさらに他の実施例を示す超
電導コイル装置の回路構成図である。この実施例では、
図１の実施例に加えて、さらに保護抵抗器３と直列に第
２の開閉装置９が配設されている。この第２の開閉装置
９は、通常運転時は開路状態であるが、クエンチが発生
したときには、制御装置７からの閉路指令により直流遮
断装置４を開路する直前に閉路される。したがつて、交
直変換装置６からの電流による保護抵抗器３でのジユー
ル損失を抑制し、装置全体の効率を向上することができ
る。FIG. 3 is a circuit configuration diagram of a superconducting coil device showing still another embodiment of the present invention. In this example,
In addition to the embodiment of FIG. 1, a second switchgear 9 is further arranged in series with the protective resistor 3. The second switchgear 9 is open during normal operation, but when a quench occurs, the second switchgear 9 is closed immediately before the DC interrupting device 4 is opened by a closing command from the controller 7. Therefore, it is possible to suppress the jule loss in the protection resistor 3 due to the current from the AC-DC converter 6, and improve the efficiency of the entire device.
【００１８】[0018]
【発明の効果】以上説明したように本発明によれば、第
１の開閉装置に連続通電機能を持たせ、直流遮断装置に
クエンチなどの異常発生時における超電導コイル電流の
遮断機能を持たせたので、直流遮断装置として短時間定
格のものの使用ですみ、したがつて大電流の直流遮断を
確実に行ない、超電導コイル電流を保護抵抗器にシフト
して超電導コイルを保護することができる。しかも、直
流遮断装置の閉路によつて超電導コイル電流を直流遮断
装置にシフトさせるために、励磁電源の電圧降下を利用
したので、従来のような微小抵抗器を使用する必要がな
く、したがつてこの微小抵抗器で常時発生するジユール
損失がなくなり、装置全体の効率を向上することができ
る。As described above, according to the present invention, the first switchgear has the continuous energizing function, and the DC interrupting device has the superconducting coil current interrupting function when an abnormality such as a quench occurs. Therefore, it is only necessary to use the DC breaker with a short-time rating, so that the DC cutoff of a large current can be reliably performed, and the superconducting coil current can be shifted to the protection resistor to protect the superconducting coil. Moreover, since the voltage drop of the excitation power supply was used to shift the superconducting coil current to the DC interrupting device due to the closed circuit of the DC interrupting device, it is not necessary to use a minute resistor as in the conventional case. The jule loss that is always generated by this minute resistor is eliminated, and the efficiency of the entire device can be improved.
【図１】本発明の一実施例を示す超電導コイル装置の回
路構成図である。FIG. 1 is a circuit configuration diagram of a superconducting coil device showing an embodiment of the present invention.
【図２】本発明の他の実施例を示す超電導コイル装置の
回路構成図である。FIG. 2 is a circuit configuration diagram of a superconducting coil device showing another embodiment of the present invention.
【図３】本発明のさらに他の実施例を示す超電導コイル
装置の回路構成図である。FIG. 3 is a circuit configuration diagram of a superconducting coil device showing still another embodiment of the present invention.
【図４】従来の超電導コイル装置の回路構成図である。FIG. 4 is a circuit configuration diagram of a conventional superconducting coil device.
【図５】従来の他の超電導コイル装置の回路構成図であ
る。FIG. 5 is a circuit configuration diagram of another conventional superconducting coil device.
【図６】従来のさらに他の超電導コイル装置の回路構成
図である。FIG. 6 is a circuit configuration diagram of still another conventional superconducting coil device.
１ クエンチ検出器 ２ 超電導コイル ３ 保護抵抗器 ４ 直流遮断装置 ５ 第１の開閉装置 ６ 交直変換装置 ７ 制御装置 ８ 直流電流検出器 ９ 第２の開閉装置 1 Quench detector 2 Superconducting coil 3 protection resistors 4 DC breaker 5 First switchgear 6 AC / DC converter 7 Control device 8 DC current detector 9 Second switchgear
Claims (3)
流電力を供給される超電導コイルと、この超電動コイル
と並列に接続された保護抵抗器とを備え、上記超電導コ
イルの異常発生時に上記超電導コイルに蓄積されたエネ
ルギを上記保護抵抗器で消費させるようにした超電導コ
イル装置において、上記保護抵抗器と並列に直流遮断装
置を接続し、この直流遮断装置を通常時は開路状態とし
ておき、異常発生時には閉路して超電導コイル電流を上
記直流遮断装置にシフトさせ、その後上記第１の開閉装
置を開路した後に上記直流遮断装置を開路する制御装置
を設けたことを特徴とする超電導コイル装置。1. A superconducting coil supplied with DC power from an excitation power source via a first switchgear, and a protective resistor connected in parallel with the superconducting coil. When an abnormality occurs in the superconducting coil. In a superconducting coil device in which the energy stored in the superconducting coil is consumed by the protective resistor, a DC interrupting device is connected in parallel with the protective resistor, and the DC interrupting device is normally opened. A superconducting coil device, which is provided with a control device for closing the circuit when an abnormality occurs to shift the superconducting coil current to the DC circuit breaker and then opening the first switchgear and then opening the DC circuit breaker. .
時に上記直流遮断装置にシフトされた超電導コイル電流
の大きさを検出する直流電流検出器を設け、上記制御装
置は、上記直流電流検出器で検出された電流値が所定値
以上に達したとき上記第１の開閉装置を開路する指令を
出力するように構成したことを特徴とする超電導コイル
装置。2. The direct current detector according to claim 1, further comprising a direct current detector for detecting the magnitude of the superconducting coil current shifted to the direct current interruption device when an abnormality occurs, wherein the control device includes the direct current detector. A superconducting coil device, wherein the superconducting coil device is configured to output a command to open the first switchgear when the current value detected in 1 reaches a predetermined value or more.
抵抗器と直列に第２の開閉装置を接続し、上記制御装置
は、上記第２の開閉装置を通常時は開路状態にしてお
き、異常発生時における上記直流遮断装置の開路に先立
つて閉路する指令を出力するように構成したことを特徴
とする超電導コイル装置。3. The device according to claim 1, wherein a second switchgear is connected in series with the protection resistor, and the controller keeps the second switchgear in an open circuit state in a normal state, A superconducting coil device, which is configured to output a command to close the DC circuit breaker prior to opening the circuit when an abnormality occurs.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3189480A JPH0513222A (en) | 1991-07-04 | 1991-07-04 | Superconducting coil device |
| DE4221876A DE4221876A1 (en) | 1991-07-04 | 1992-07-03 | Improved protection circuit for superconducting coils during quenching - uses shunting switch operated by controller reacting to current change in superconducting coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3189480A JPH0513222A (en) | 1991-07-04 | 1991-07-04 | Superconducting coil device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0513222A true JPH0513222A (en) | 1993-01-22 |
Family
ID=16241970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3189480A Pending JPH0513222A (en) | 1991-07-04 | 1991-07-04 | Superconducting coil device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0513222A (en) |
| DE (1) | DE4221876A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104124033A (en) * | 2013-04-26 | 2014-10-29 | 上海联影医疗科技有限公司 | Superconducting magnet circuit and magnet exercise method |
| JP2015535709A (en) * | 2012-09-27 | 2015-12-17 | コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． | System and method for automatically stopping a superconducting permanent magnet |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4713722A (en) * | 1985-07-20 | 1987-12-15 | Kabushiki Kaisha Toshiba | Superconducting system and method for controlling the same |
| JPH0340409A (en) * | 1989-07-07 | 1991-02-21 | Hitachi Ltd | Superconducting coil system |
-
1991
- 1991-07-04 JP JP3189480A patent/JPH0513222A/en active Pending
-
1992
- 1992-07-03 DE DE4221876A patent/DE4221876A1/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015535709A (en) * | 2012-09-27 | 2015-12-17 | コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． | System and method for automatically stopping a superconducting permanent magnet |
| CN104124033A (en) * | 2013-04-26 | 2014-10-29 | 上海联影医疗科技有限公司 | Superconducting magnet circuit and magnet exercise method |
| CN104124033B (en) * | 2013-04-26 | 2017-04-19 | 深圳联影医疗科技有限公司 | Superconducting magnet circuit and magnet exercise method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4221876A1 (en) | 1993-01-07 |
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