JP4592365B2 - Vacuum shut-off device control circuit - Google Patents

Vacuum shut-off device control circuit Download PDF

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JP4592365B2
JP4592365B2 JP2004260153A JP2004260153A JP4592365B2 JP 4592365 B2 JP4592365 B2 JP 4592365B2 JP 2004260153 A JP2004260153 A JP 2004260153A JP 2004260153 A JP2004260153 A JP 2004260153A JP 4592365 B2 JP4592365 B2 JP 4592365B2
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circuit
contact
closing
coil
repulsion
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JP2006079860A (en
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順 松崎
冨夫 郷
芳充 丹羽
邦夫 横倉
秋久 片岡
哲 石田
秀二 菊地
和宏 松尾
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Toshiba Corp
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Description

本発明は、電磁反発で駆動して開極する真空遮断装置の開閉動作を改善し得る真空遮断装置の制御回路に関する。   The present invention relates to a control circuit for a vacuum circuit breaker that can improve the opening / closing operation of a vacuum circuit breaker that is driven by electromagnetic repulsion to open a pole.

従来の電磁反発を有する真空遮断装置は、主回路に流れる過電流を、一般の遮断装置が数十ｍｓから百数十ｍｓの時間で遮断するところを、電磁反発で数ｍｓで遮断し、過電流が負荷側に継続して流れることを抑制している（例えば、特許文献１参照。）。   The conventional vacuum circuit breaker having electromagnetic repulsion cuts off the overcurrent flowing in the main circuit in a few ms by electromagnetic repulsion, while the general circuit breaker cuts off in a time of several tens of ms to hundreds of tens of ms. The current is prevented from continuously flowing to the load side (see, for example, Patent Document 1).

この真空遮断装置は、図５に示すように、主回路の電流を開閉する遮断部１ａ、遮断部１ａを電磁反発力で開極する電磁反発部１ｂ、および遮断部１ａを開閉する操作機構部１ｃで構成されている。   As shown in FIG. 5, this vacuum circuit breaker includes a blocking unit 1a that opens and closes the current of the main circuit, an electromagnetic repulsion unit 1b that opens the blocking unit 1a with an electromagnetic repulsive force, and an operation mechanism unit that opens and closes the blocking unit 1a. 1c.

遮断部１ａには、接離自在の一対の電極２、３を有する真空バルブ４が設けられている。また、真空バルブ４外の可動側の可動通電軸５には、絶縁操作ロッド６の一方端が連結されている。   The blocking portion 1a is provided with a vacuum valve 4 having a pair of electrodes 2 and 3 that can be contacted and separated. In addition, one end of an insulating operation rod 6 is connected to the movable energizing shaft 5 on the movable side outside the vacuum valve 4.

電磁反発部１ｂには、絶縁操作ロッド６の他方端に連結された可動操作軸７が可動通電軸５の軸方向に配置されている。可動操作軸７の周りには、この可動操作軸７が移動自在に挿通する真空遮断装置の固定部材に固定された電磁反発コイル８が設けられている。また、この電磁反発コイル８と対向する操作機構部１ｃ側には、反発板９が可動操作軸７に固定されている。可動操作軸７端には、遮断部１ａの閉極時に電極２、３間に接触荷重を加えるワイプバネ１０が設けられている。   A movable operating shaft 7 connected to the other end of the insulating operating rod 6 is disposed in the electromagnetic repulsion portion 1 b in the axial direction of the movable energizing shaft 5. Around the movable operation shaft 7, there is provided an electromagnetic repulsion coil 8 fixed to a fixing member of a vacuum shut-off device through which the movable operation shaft 7 is movably inserted. A repulsion plate 9 is fixed to the movable operation shaft 7 on the side of the operation mechanism portion 1 c facing the electromagnetic repulsion coil 8. A wipe spring 10 that applies a contact load between the electrodes 2 and 3 when the blocking portion 1a is closed is provided at the end of the movable operation shaft 7.

操作機構部１ｃには、ワイプバネ１０に連結された例えば閉路コイル１１、開路コイル１２を有する電磁アクチュエータのような操作機構が設けられている。この操作機構は、バネ操作のようなものでもよい。   The operation mechanism unit 1 c is provided with an operation mechanism such as an electromagnetic actuator having, for example, a closed coil 11 and an open coil 12 connected to the wipe spring 10. This operation mechanism may be something like a spring operation.

そして、通常の遮断部１ａの開閉は、操作機構部１ｃで行われ、開極から閉極、もしくは閉極から開極までの時間が数十ｍｓから百数十ｍｓとなっている。また、過大な過電流が流れた場合、直ちに遮断する必要から電磁反発部１ｂが駆動して反発板９が操作機構部１ｃ側に急速に移動する。これにより、閉極から開極までの時間が数ｍｓと短時間で過電流を遮断するようになっている。
特開２００２−１２４１６２号公報 （第４ページ、図１） The normal opening / closing of the blocking unit 1a is performed by the operation mechanism unit 1c, and the time from opening to closing or from closing to opening is several tens to several hundreds of ms. Further, when an excessive overcurrent flows, the electromagnetic repulsion part 1b is driven because it is necessary to immediately cut off, and the repulsion plate 9 moves rapidly toward the operation mechanism part 1c. As a result, the overcurrent is interrupted in a short time of several ms from closing to opening.
JP 2002-124162 A (Page 4, FIG. 1)

上記の従来の真空遮断装置においては、次のような問題がある。
操作機構部１ｃを操作して遮断部１ａを閉極させたとき、主回路に事故電流などの過電流が流れていると、直ちに遮断する必要から電磁反発部１ｂが駆動し、遮断部１ａが開極して過電流が遮断される。この遮断は、数ｍｓで行われるものの、操作機構部１ｃでは、数十ｍｓから百数十ｍｓの時間を要するので閉極の動作が継続されている。 The above conventional vacuum shut-off device has the following problems.
When the operating mechanism unit 1c is operated to close the blocking unit 1a, if an overcurrent such as an accident current flows in the main circuit, the electromagnetic repulsion unit 1b is driven because it is necessary to immediately disconnect, and the blocking unit 1a The overcurrent is cut off by opening the pole. Although this interruption is performed in a few ms, the operation mechanism unit 1c requires a time of several tens of ms to one hundred and several tens of ms, so that the closing operation is continued.

このため、電磁反発部１ｂで開極したものの、操作機構部１ｃでは閉極の動作が継続されているので、遮断部１ａは再閉極することになる。遮断部１ａが再閉極すると、過電流が再通電され、負荷側に接続されている電気機器を損傷させてしまう。   For this reason, although the electromagnetic repulsion unit 1b opens the pole, the operation mechanism unit 1c continues the closing operation, so that the blocking unit 1a is closed again. If the interruption | blocking part 1a recloses, an overcurrent will be re-energized and will damage the electric equipment connected to the load side.

これらのことより、電磁反発部１ｂが駆動したとき、確実に開極を保持し、再閉極を防止する真空遮断装置の制御回路が望まれていた。   For these reasons, there has been a demand for a control circuit for a vacuum interrupter that reliably holds the opening and prevents reclosing when the electromagnetic repulsion unit 1b is driven.

本発明は上記問題を解決するためになされたもので、電磁反発部が駆動して遮断部を開極したとき、その開極状態を保持するように開閉動作を改善する真空遮断装置の制御回路を得ることを目的とする。   The present invention has been made to solve the above problem, and when the electromagnetic repulsion unit is driven to open the breaking unit, the control circuit of the vacuum breaking device improves the opening / closing operation so as to maintain the opened state. The purpose is to obtain.

上記目的を達成するために、本発明の真空遮断装置の制御回路は、操作機構を動作させて接離自在の一対の電極を開極にする遮断回路と、前記操作機構を動作させて前記一対の電極を閉極にする投入回路と、前記投入回路に直列に接続された接点と、電磁反発により、前記操作機構よりも短時間で前記一対の電極を開極にする反発コイルを有する電磁反発回路とを備え、前記投入回路を操作中に、前記電磁反発回路が駆動すると、前記接点は、閉路から開路になり、投入操作を中断することを特徴とする。 In order to achieve the above object, a control circuit for a vacuum circuit breaker according to the present invention includes a circuit that operates an operating mechanism to open a pair of electrodes that can be freely contacted and separated, and a circuit that operates the operating mechanism to operate the pair. An electromagnetic repulsion having a closing circuit that closes the electrodes of the electrode, a contact connected in series to the closing circuit, and a repulsion coil that opens the pair of electrodes in a shorter time than the operation mechanism by electromagnetic repulsion. And when the electromagnetic repulsion circuit is driven during operation of the closing circuit, the contact is changed from closed to open, and the closing operation is interrupted .

本発明によれば、真空遮断装置の遮断部を操作機構部により閉極するように動作させる投入回路に、電磁反発部が駆動すると閉路から開路する接点を直列に接続しているので、遮断部を操作機構部で閉極させた直後に、主回路の過電流により電磁反発部が駆動して遮断部が開極すると、投入回路が開路され、開極状態を保持することができる。   According to the present invention, since the contact circuit that operates to close the shut-off part of the vacuum shut-off device by the operation mechanism part is connected in series with the contact that opens from the closed circuit when the electromagnetic repulsion part is driven, When the electromagnetic repulsion unit is driven by the overcurrent of the main circuit immediately after the operating mechanism unit is closed by the operation mechanism unit and the blocking unit is opened, the closing circuit is opened and the open state can be maintained.

以下、図面を参照して本発明の実施例を説明する。   Embodiments of the present invention will be described below with reference to the drawings.

先ず、本発明の実施例１に係る真空遮断装置の制御回路を図１および図２を参照して説明する。図１は、本発明の実施例１に係る真空遮断装置の制御回路の投入回路と遮断回路とを示す回路図、図２は、本発明の実施例１に係る真空遮断装置の制御回路による各部の動作を説明する図である。なお、真空遮断装置の構成は、図５と同様であるので、説明を省略する。   First, the control circuit of the vacuum interrupter according to Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 1 is a circuit diagram showing a closing circuit and a shut-off circuit of a control circuit of a vacuum interrupter according to Embodiment 1 of the present invention, and FIG. 2 is a diagram showing each part of the control circuit of the vacuum interrupter according to Embodiment 1 of the present invention. It is a figure explaining operation | movement of. In addition, since the structure of a vacuum interrupting device is the same as that of FIG. 5, description is abbreviate | omitted.

図１に示すように、真空遮断装置の制御回路には、Ｐ（正極性）−Ｎ（負極性）間に、遮断部１ａを開極させる第１の遮断回路２０と、閉極させる第１の投入回路２１とが並列に接続されている。また、Ｐ−Ｎ間には、第１の遮断回路２０を制御する第２の遮断回路２２と、第１の投入回路２１を制御する第２の投入回路２３とが並列に接続されている。更に、電磁反発部１ｂを駆動させる電磁反発回路２４が並列に接続されている。   As shown in FIG. 1, the control circuit of the vacuum interrupter includes a first interrupt circuit 20 that opens the interrupter 1a between P (positive polarity) and N (negative polarity), and a first electrode that closes the pole. Are connected in parallel. Further, a second cutoff circuit 22 for controlling the first cutoff circuit 20 and a second closing circuit 23 for controlling the first closing circuit 21 are connected in parallel between PN. Further, an electromagnetic repulsion circuit 24 for driving the electromagnetic repulsion unit 1b is connected in parallel.

第１の遮断回路２０には、操作機構部１ｃ内に設けられ、遮断部１ａを開極させるような操作力が得られる電流容量の大きい開路コイル３０と、常時開路で後述する第１のコイル３７が励磁されることで閉路する接点３１とが直列に接続されている。また、第１の投入回路２１には、操作機構部１ｃ内に設けられ、第１の遮断回路２０と同様に大きな操作力が得られる電流容量の大きい閉路コイル３２と、常時開路で後述する第２のコイル４２が励磁されることで閉路する接点３３とが直列に接続されている。   The first breaking circuit 20 is provided in the operation mechanism unit 1c, and has a large current capacity for obtaining an operating force that opens the breaking unit 1a. A contact 31 that closes when 37 is excited is connected in series. In addition, the first closing circuit 21 is provided in the operation mechanism unit 1c, and a closed coil 32 having a large current capacity that can obtain a large operating force similarly to the first breaking circuit 20, and a normally open circuit described later. A contact 33 that is closed when the second coil 42 is excited is connected in series.

第２の遮断回路２２は、第１の遮断回路２０よりも電流容量の小さい制御用であり、接点部２２ａとリレー部２２ｂとに分かれている。接点部２２ａには、図示しない制御回路からの遮断指令で閉路する接点３４が設けられている。リレー部２２ｂには、接点３４と直列に接続された保護抵抗３５を介して、遮断部１ａの補助接点で遮断部１ａが開極時に開路の接点３６、および第１のコイル３７が直列に接続されている。   The second cutoff circuit 22 is for control having a smaller current capacity than the first cutoff circuit 20, and is divided into a contact portion 22a and a relay portion 22b. The contact portion 22a is provided with a contact 34 that is closed by a shut-off command from a control circuit (not shown). The relay part 22b is connected in series with a contact 36 and a first coil 37 that are open when the interrupting part 1a is opened at the auxiliary contact of the interrupting part 1a via a protective resistor 35 connected in series with the contact 34. Has been.

第２の投入回路２３も、第１の投入回路２１よりも電流容量の小さい制御用であり、接点部２３ａとリレー部２３ｂとに分かれている。接点部２３ａには、図示しない制御回路からの投入指令で閉路する接点３８が設けられている。   The second making circuit 23 is also for control having a smaller current capacity than the first making circuit 21, and is divided into a contact portion 23a and a relay portion 23b. The contact portion 23a is provided with a contact 38 that is closed by a closing command from a control circuit (not shown).

リレー部２３ｂには、接点３８と直列に接続された保護抵抗３９を介して、遮断部１ａの補助接点で遮断部１ａが開極時に閉路の接点４０、常時閉路で第１のコイル３７が励磁されると開路する接点４１、第２のコイル４２、および常時閉路で後述する第３のコイル４６が励磁されることで開路する接点４３が直列に接続されている。更に、常時閉路で後述する電磁反発回路２４の第４のコイル５０が励磁されることで開路する接点４４が直列に接続されている。この接点４４は、第４のコイル５０に近接した接点部２３ａに設けられている。   The relay part 23b is energized via a protective resistor 39 connected in series with the contact point 38, with the auxiliary contact point of the breaking part 1a being the closing part 40 when the breaking part 1a is open and the first coil 37 being normally closed. Then, the contact 41 that opens, the second coil 42, and the contact 43 that opens when the third coil 46, which will be described later in a normally closed state, is excited are connected in series. In addition, a contact 44 that opens when a fourth coil 50 of an electromagnetic repulsion circuit 24, which will be described later, is normally closed and is excited is connected in series. The contact 44 is provided in the contact portion 23 a adjacent to the fourth coil 50.

また、保護抵抗３９のN側とN間には、保護抵抗４５を介して第３のコイル４６が接続されている。   A third coil 46 is connected between the N side of the protective resistor 39 and N via a protective resistor 45.

電磁反発回路２４は、検出部２４ａと反発コイル部２４ｂとに分かれている。   The electromagnetic repulsion circuit 24 is divided into a detection unit 24a and a repulsion coil unit 24b.

検出部２４ａには、主回路の過電流を検出する電流検出回路４７と、この電流検出回路４７からの信号を受けて直ちに動作する第１のトリガスイッチ４８、および電源４９が設けられている。また、電流検出回路４７には、この電流検出回路４７が動作することにより、励磁される第４のコイル５０が設けられている。   The detection unit 24a is provided with a current detection circuit 47 that detects an overcurrent of the main circuit, a first trigger switch 48 that operates immediately upon receiving a signal from the current detection circuit 47, and a power source 49. Further, the current detection circuit 47 is provided with a fourth coil 50 that is excited when the current detection circuit 47 operates.

反発コイル部２４ｂには、第１のトリガスイッチ４８からの信号を受けて、直ちに閉路する第２のトリガスイッチ５１、この第２のトリガスイッチ５１で閉路するサイリスタスイッチ５２が設けられている。サイリスタスイッチ５２には、コンデンサ５３と反発コイル５４とが直列に接続されており、電磁反発部１ｂを駆動させるようになっている。   The repulsion coil unit 24 b is provided with a second trigger switch 51 that receives a signal from the first trigger switch 48 and immediately closes it, and a thyristor switch 52 that closes with the second trigger switch 51. A capacitor 53 and a repulsion coil 54 are connected in series to the thyristor switch 52 so as to drive the electromagnetic repulsion unit 1b.

ここで、第２の遮断回路２２の接点部２２ａ、第２の投入回路２３の接点部２３ａおよび電磁反発回路２４の検出部２４ａは、真空遮断装置と別置された制御装置内に収納されている。また、第１の遮断回路２０、第１の投入回路２１、第２の遮断回路２２のリレー部２２ｂ、第２の投入回路２３のリレー部２３ｂ、および電磁反発回路２４の反発コイル部２４ｂは、操作機構部１ｃ内に収納されている。   Here, the contact portion 22a of the second breaking circuit 22, the contact portion 23a of the second closing circuit 23, and the detection portion 24a of the electromagnetic repulsion circuit 24 are housed in a control device that is separate from the vacuum breaker. Yes. Further, the first cutoff circuit 20, the first closing circuit 21, the relay portion 22b of the second closing circuit 22, the relay portion 23b of the second closing circuit 23, and the repulsion coil portion 24b of the electromagnetic repulsion circuit 24 are: It is stored in the operation mechanism 1c.

また、第１の遮断回路２０と第２の遮断回路２２とで、遮断部１ａを開極させる遮断回路が構成されている。また、第１の投入回路２１と第２の投入回路２３とで、遮断部１ａを閉極させる投入回路が構成されている。   Further, the first cutoff circuit 20 and the second cutoff circuit 22 constitute a cutoff circuit for opening the cutoff portion 1a. Further, the first closing circuit 21 and the second closing circuit 23 constitute a closing circuit that closes the blocking unit 1a.

そして、遮断部１ａを閉極させたとき、主回路に過電流が流れていて、直ちに開極する場合の制御回路の動作を図２を参照して説明する。   The operation of the control circuit in the case where the overcurrent flows through the main circuit when the blocking unit 1a is closed and immediately opens the contact will be described with reference to FIG.

図示しない制御装置からの投入指令により第２の投入回路２３の接点３８を時間ｔ１に閉路すると、第２のコイル４２が励磁され、接点３３が閉路する。すると、閉路コイル３２が励磁されて遮断部１ａが閉極する。遮断部１ａが閉極すると、遮断部１ａの補助接点である接点４０が開路し、第３のコイル４６の励磁が始まる。   When the contact 38 of the second closing circuit 23 is closed at time t1 by a closing command from a control device (not shown), the second coil 42 is excited and the contact 33 is closed. Then, the closing coil 32 is excited and the blocking part 1a is closed. When the blocking unit 1a is closed, the contact 40, which is an auxiliary contact of the blocking unit 1a, is opened, and excitation of the third coil 46 starts.

接点４０が開路し、第３のコイル４６が励磁を始めて接点４３が開路するまでには、数十ｍｓの時間を要する。これにより、投入操作が完了する。   It takes a time of several tens of milliseconds until the contact 40 is opened, the third coil 46 starts to be excited, and the contact 43 is opened. Thereby, the input operation is completed.

しかしながら、投入操作が完了する前であって、遮断部１ａが閉極した時点以降の時間ｔ３に、電流検出回路４７で過電流が検出されると、電磁反発回路２４のサイリスタスイッチ５２が直ちに閉路する。すると、反発コイル５４が励磁され、電磁反発部１ｂが駆動する。同時に、第４のコイル５０が励磁され、それに伴って接点４４が時間ｔ４に開路する。これらの動作は、高速で遮断部１ａを開極する必要から、数ｍｓの短時間で行われる。特に、接点４４は、第４のコイル５０が励磁されて開路するまでの時間遅れが少ない。   However, if an overcurrent is detected by the current detection circuit 47 before the closing operation is completed and at a time t3 after the breaker 1a is closed, the thyristor switch 52 of the electromagnetic repulsion circuit 24 is immediately closed. To do. Then, the repulsion coil 54 is excited and the electromagnetic repulsion unit 1b is driven. At the same time, the fourth coil 50 is excited, and the contact 44 is opened at time t4. These operations are performed in a short time of several ms because it is necessary to open the blocking section 1a at a high speed. In particular, the contact 44 has little time delay until the fourth coil 50 is excited and opened.

そして、接点４４の開路により、第２のコイル４２が非励磁となり、第３のコイル４６が励磁され接点３３が開路する。また、接点４３が開路した時間ｔ２以降に、第４のコイル５０が非励磁となり時間ｔ５に接点４４が閉路する。   When the contact 44 is opened, the second coil 42 is de-energized, the third coil 46 is excited, and the contact 33 is opened. Further, after time t2 when the contact 43 is opened, the fourth coil 50 is de-energized and the contact 44 is closed at time t5.

このように、接点４３が開路する時間ｔ２以降の時間ｔ５において、接点４４を閉路するようにしているので、電磁反発部１ｂを駆動させると、投入操作を継続中の遮断部１ａは投入操作が中断され、強制的に開極することになる。また、接点４３、４４が動作する時間から見ると、接点４４が時間ｔ４に開路して時間ｔ５に閉路するまでの時間幅τ１よりも、接点４３が開路を始めようとしていて、接点４４が開路する時間ｔ４の時点から実際に開路する時間ｔ２までの時間幅τ２の方が短くなっている。   Thus, since the contact 44 is closed at time t5 after the time t2 when the contact 43 is opened, when the electromagnetic repulsion part 1b is driven, the closing part 1a that is continuing the making operation is operated. It will be interrupted and it will be forcibly opened. Further, when viewed from the time when the contacts 43 and 44 are operated, the contact 43 is about to start to open than the time width τ1 from when the contact 44 is opened at time t4 to when it is closed at time t5, and the contact 44 is opened. The time width τ2 from the time t4 to the time t2 when the circuit is actually opened is shorter.

これにより、接点４３が開路する時間ｔ２までの間、接点４４が開路しているので、投入操作は中断される。そして、遮断部１ａは、開極状態が保持される。   Thereby, since the contact 44 is open until the time t2 when the contact 43 is opened, the making operation is interrupted. And the interruption | blocking part 1a is maintained in an open state.

電磁反発部１ｂは、短時間の大電流で駆動をするため、時間ｔ２よりも短い時間ｔ６にサイリスタスイッチ５２が開路される。そして、電磁反発部１ｂの駆動が完了する。   Since the electromagnetic repulsion unit 1b is driven with a large current for a short time, the thyristor switch 52 is opened at a time t6 shorter than the time t2. And the drive of the electromagnetic repulsion part 1b is completed.

なお、接点４４を設けていない場合では、電磁反発部１ｂを駆動させるサイリスタスイッチ５２が開路された時間ｔ６において、第２のコイル４２が励磁された状態で、投入操作が継続されており、接点３３は閉路している。このため、遮断部１ａは、電磁反発部１ｂの駆動で開極したものの、投入操作が継続されているので、点線で示すように再閉極を起こしてしまう。   In the case where the contact 44 is not provided, at time t6 when the thyristor switch 52 for driving the electromagnetic repulsion unit 1b is opened, the closing operation is continued with the second coil 42 being excited. 33 is closed. For this reason, although the interruption | blocking part 1a was opened by the drive of the electromagnetic repulsion part 1b, since closing | fastening operation is continued, it will cause re-closing as shown with a dotted line.

また、接点４４を設けている場合で、電流検出回路４７で過電流が検出されない場合では、接点４４が閉路しているので、投入操作は継続され、遮断部１ａを通常の操作で閉極状態にさせることができる。   In the case where the contact 44 is provided and no overcurrent is detected by the current detection circuit 47, the contact 44 is closed, so that the closing operation is continued, and the breaking portion 1a is closed by a normal operation. Can be made.

上記実施例１の真空遮断装置の制御回路によれば、真空遮断装置の投入回路２３に、電磁反発回路２４が動作したとき閉路から開路になる接点４４を直列に接続しているので、真空遮断装置の遮断部１ａを閉極させた直後に電磁反発回路２４が駆動して遮断部１ａが直ちに開極しても、投入操作が中断されて遮断部１ａの再閉極を防ぎ、開極状態を保持することができる。   According to the control circuit of the vacuum circuit breaker of the first embodiment, the contact circuit 44 that opens from the closed circuit when the electromagnetic repulsion circuit 24 operates is connected in series to the closing circuit 23 of the vacuum circuit breaker. Even if the electromagnetic repulsion circuit 24 is driven immediately after closing the blocking unit 1a of the device and the blocking unit 1a is immediately opened, the closing operation is interrupted to prevent reclosing of the blocking unit 1a, and the open state Can be held.

次に、本発明の実施例２に係る真空遮断装置の制御回路を図３を参照して説明する。図３は、本発明の実施例２に係る真空遮断装置の制御回路の投入回路と遮断回路とを示す回路図である。なお、この実施例２が実施例１と異なる点は、電磁反発回路に設ける接点の収納場所が異なることである。図３において、実施例１と同様の構成部分においては、同一符号を付し、その詳細な説明を省略する。   Next, a control circuit of the vacuum interrupter according to Embodiment 2 of the present invention will be described with reference to FIG. FIG. 3 is a circuit diagram showing a closing circuit and a shut-off circuit of the control circuit of the vacuum interrupter according to Embodiment 2 of the present invention. The second embodiment is different from the first embodiment in that the storage location of the contact provided in the electromagnetic repulsion circuit is different. In FIG. 3, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

図３に示すように、第２の投入回路２３に直列に接続される常時閉路で第４のコイル５０が励磁されることで開路する接点５５を、操作機構部１ｃ内に収納される電磁反発回路２４の反発コイル部２４ｂに設けている。また、第４のコイル５０と接点５５間は、例えばフォトカプラーを用いた制御回路で接続されている。   As shown in FIG. 3, an electromagnetic repulsion housed in the operation mechanism portion 1c is provided with a contact 55 that opens when the fourth coil 50 is excited in a normally closed circuit connected in series to the second closing circuit 23. It is provided in the repulsion coil portion 24 b of the circuit 24. Further, the fourth coil 50 and the contact point 55 are connected by a control circuit using, for example, a photocoupler.

上記実施例２の真空遮断装置の制御回路によれば、実施例１と同様の効果のほかに、接点５５が操作機構部１ｃ内に収納されているので、第２の投入回路２３の制御線が短くなり、配線作業が容易になるとともに、制御線を主回路からの電磁、静電などの誘導から防ぐことができる。   According to the control circuit of the vacuum interrupter of the second embodiment, in addition to the same effect as that of the first embodiment, the contact 55 is accommodated in the operation mechanism portion 1c. Thus, the wiring work is facilitated and the control line can be prevented from induction of electromagnetic, electrostatic, etc. from the main circuit.

次に、本発明の実施例３に係る真空遮断装置の制御回路を図４を参照して説明する。図４は、本発明の実施例３に係る真空遮断装置の制御回路の投入回路と遮断回路とを示す回路図である。なお、この実施例３が実施例１と異なる点は、電磁反発回路に設ける接点を反発コイルで動作させることである。図４において、実施例１と同様の構成部分においては、同一符号を付し、その詳細な説明を省略する。   Next, a control circuit of the vacuum interrupter according to Embodiment 3 of the present invention will be described with reference to FIG. FIG. 4 is a circuit diagram showing a closing circuit and a shut-off circuit of the control circuit of the vacuum interrupter according to Embodiment 3 of the present invention. The third embodiment is different from the first embodiment in that a contact provided in the electromagnetic repulsion circuit is operated by a repulsion coil. In FIG. 4, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

図４に示すように、第２の投入回路２３に直列に接続される常時閉路で反発コイル５４が励磁されることで開路する接点５６を、反発コイル部２４ｂに設けている。   As shown in FIG. 4, the repulsion coil portion 24b is provided with a contact 56 that opens when the repulsion coil 54 is excited in a normally closed circuit connected in series to the second closing circuit 23.

上記実施例３の真空遮断装置の制御回路によれば、実施例１と同様の効果のほかに、接点５６が操作機構部１ｃ内に収納されているので、第２の投入回路２３の制御線が短くなり、配線作業が容易になる。   According to the control circuit of the vacuum shut-off device of the third embodiment, in addition to the same effect as that of the first embodiment, the contact 56 is accommodated in the operation mechanism portion 1c. Becomes shorter and wiring work becomes easier.

本発明の実施例１に係る真空遮断装置の制御回路の投入回路と遮断回路とを示す回路図。The circuit diagram which shows the closing circuit and interruption | blocking circuit of the control circuit of the vacuum interruption | blocking apparatus which concern on Example 1 of this invention. 本発明の実施例１に係る真空遮断装置の制御回路による各部の動作を説明する図。The figure explaining operation | movement of each part by the control circuit of the vacuum interrupter concerning Example 1 of the present invention. 本発明の実施例２に係る真空遮断装置の制御回路の投入回路と遮断回路とを示す回路図。The circuit diagram which shows the closing circuit and interruption | blocking circuit of the control circuit of the vacuum interruption | blocking apparatus concerning Example 2 of this invention. 本発明の実施例３に係る真空遮断装置の制御回路の投入回路と遮断回路とを示す回路図。The circuit diagram which shows the closing circuit and interruption | blocking circuit of the control circuit of the vacuum interruption | blocking apparatus which concern on Example 3 of this invention. 真空遮断装置の構成を示す図。The figure which shows the structure of a vacuum interrupter.

符号の説明Explanation of symbols

１ａ 遮断部
１ｂ 電磁反発部
１ｃ 操作機構部
２、３ 電極
４ 真空バルブ
５ 可動通電軸
６ 絶縁操作ロッド
７ 可動操作軸
８ 電磁反発コイル
９ 反発板
１０ ワイプバネ
１１ 閉路コイル
１２ 開路コイル
２０ 第１の遮断回路
２１ 第１の投入回路
２２ 第２の遮断回路
２２ａ、２３ａ 接点部
２２ｂ、２３ｂ リレー部
２３ 第２の投入回路
２４ 電磁反発回路
２４ａ 検出部
２４ｂ 反発コイル部
３０ 開路コイル
３１、３３、３４、３６、３８、４０、４１、４３、４４、５５、５６ 接点
３２ 閉路コイル
３５、３９、４５ 保護抵抗
３７ 第１のコイル
４２ 第２のコイル
４６ 第３のコイル
４７ 電流検出回路
４８ 第１のトリガスイッチ
４９ 電源
５０ 第４のコイル
５１ 第２のトリガスイッチ
５２ サイリスタスイッチ
５３ コンデンサ
５４ 反発コイル

DESCRIPTION OF SYMBOLS 1a Blocking part 1b Electromagnetic repulsion part 1c Operation mechanism part 2, 3 Electrode 4 Vacuum valve 5 Movable energizing shaft 6 Insulating operation rod 7 Movable operation shaft 8 Electromagnetic repulsion coil 9 Repulsion plate 10 Wipe spring 11 Closed coil 12 Opening coil 20 First interruption Circuit 21 First closing circuit 22 Second breaking circuit 22a, 23a Contact part 22b, 23b Relay part 23 Second closing circuit 24 Electromagnetic repulsion circuit 24a Detection part 24b Repulsion coil part 30 Opening coils 31, 33, 34, 36 , 38, 40, 41, 43, 44, 55, 56 Contact 32 Closed coil 35, 39, 45 Protection resistor 37 First coil 42 Second coil 46 Third coil 47 Current detection circuit 48 First trigger switch 49 Power supply 50 Fourth coil 51 Second trigger switch 52 Thyristor switch 53 Capacitor 54 Repulsion coil

Claims (3)

操作機構を動作させて接離自在の一対の電極を開極にする遮断回路と、
前記操作機構を動作させて前記一対の電極を閉極にする投入回路と、
前記投入回路に直列に接続された接点と、
電磁反発により、前記操作機構よりも短時間で前記一対の電極を開極にする反発コイルを有する電磁反発回路とを備え、
前記投入回路を操作中に、前記電磁反発回路が駆動すると、
前記接点は、閉路から開路になり、投入操作を中断することを特徴とする真空遮断装置の制御回路。 A breaking circuit that operates the operating mechanism to open a pair of electrodes that can be contacted and separated; and
A closing circuit that operates the operating mechanism to close the pair of electrodes;
Contacts connected in series to the input circuit;
An electromagnetic repulsion circuit having a repulsion coil that opens the pair of electrodes in a shorter time than the operation mechanism by electromagnetic repulsion;
When the electromagnetic repulsion circuit is driven while operating the closing circuit,
The control circuit for a vacuum interrupter, wherein the contact is changed from a closed circuit to an open circuit to interrupt a closing operation . 前記接点を、前記電磁反発回路の電流検出回路で電流検出されると動作するようにしたことを特徴とする請求項１に記載の真空遮断装置の制御回路。   2. The control circuit for a vacuum interrupter according to claim 1, wherein the contact is operated when a current is detected by a current detection circuit of the electromagnetic repulsion circuit. 前記接点を、前記反発コイルが励磁されると動作するようにしたことを特徴とする請求項１に記載の真空遮断装置の制御回路。   2. The control circuit for a vacuum interrupter according to claim 1, wherein the contact is operated when the repulsion coil is excited.
JP2004260153A 2004-09-07 2004-09-07 Vacuum shut-off device control circuit Active JP4592365B2 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000299041A (en) * 1999-04-13 2000-10-24 Toshiba Corp Vacuum circuit-breaker
JP2002343200A (en) * 2001-05-14 2002-11-29 Hitachi Ltd Breaker and its assembly method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3334340B2 (en) * 1994-06-28 2002-10-15 株式会社明電舎 Switch operation control device
JPH08222088A (en) * 1995-02-13 1996-08-30 Toshiba Fa Syst Eng Kk Input circuit for switch
JPH11149851A (en) * 1997-11-14 1999-06-02 Toshiba Corp Current-limiting breaking device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000299041A (en) * 1999-04-13 2000-10-24 Toshiba Corp Vacuum circuit-breaker
JP2002343200A (en) * 2001-05-14 2002-11-29 Hitachi Ltd Breaker and its assembly method

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