JP6231445B2 - Commutation type DC circuit breaker and monitoring method thereof - Google Patents

Commutation type DC circuit breaker and monitoring method thereof Download PDF

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JP6231445B2
JP6231445B2 JP2014136445A JP2014136445A JP6231445B2 JP 6231445 B2 JP6231445 B2 JP 6231445B2 JP 2014136445 A JP2014136445 A JP 2014136445A JP 2014136445 A JP2014136445 A JP 2014136445A JP 6231445 B2 JP6231445 B2 JP 6231445B2
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commutation
switch
circuit
capacitor
circuit breaker
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JP2016015236A5 (en
JP2016015236A (en
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敬大 福田
敬大 福田
佳彦 松田
佳彦 松田
明彦 渡邉
明彦 渡邉
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Hitachi Industrial Equipment Systems Co Ltd
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Priority to KR1020150091964A priority patent/KR101729399B1/en
Priority to CN201510385770.7A priority patent/CN105244219B/en
Priority to TW104121314A priority patent/TWI608509B/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
    • H01H33/596—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle for interrupting dc

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Description

本発明は転流式直流遮断器及びその監視方法に係り、特に、転流用コンデンサに蓄積した電荷を、主回路電流とは逆方向に流して電流零点を作成して主開閉器を遮断するものに好適な転流式直流遮断器及びその監視方法に関する。   The present invention relates to a commutation type DC circuit breaker and a method for monitoring the commutation type DC circuit breaker, and more particularly, to interrupt a main switch by creating a current zero point by causing the electric charge accumulated in a commutation capacitor to flow in a direction opposite to the main circuit current. And a monitoring method thereof.

従来の転流式直流遮断器として、特許文献１及び２に記載されたものがある。この特許文献１及び２には、転流式直流遮断器は、主開閉器と、この主開閉器に直列接続された副開閉器と、転流用コンデンサと転流スイッチの直列回路から構成され、前記主開閉器に並列に接続される転流回路と、前記転流用コンデンサを充電するコンデンサ充電装置とに加えて、前記転流用コンデンサを介して前記転流スイッチの反対側に設けられた転流回路形成スイッチを備えることが記載されている。   There exist some which were described in patent documents 1 and 2 as a conventional commutation type DC circuit breaker. In Patent Documents 1 and 2, a commutation type DC circuit breaker includes a main switch, a sub-switch connected in series to the main switch, a series circuit of a commutation capacitor and a commutation switch, In addition to the commutation circuit connected in parallel to the main switch and the capacitor charging device for charging the commutation capacitor, the commutation provided on the opposite side of the commutation switch via the commutation capacitor It is described that a circuit forming switch is provided.

特開２０１０−１９２３０５号公報JP 2010-192305 A 特開２０１０−２８７４６０号公報JP 2010-287460 A

しかしながら、上述した従来の転流式直流遮断器は、直流回路に過大な電流が流れた場合に、転流電流を通電することで零点を発生させていることから、転流スイッチ及び転流回路形成スイッチを介して電気的に主回路と転流回路を接続しているが、事故等の不具合により各スイッチの閉ができない場合には、事故電流の遮断の失敗を瞬時に知ることができず、他機器に影響を及ぼすことが懸念される。   However, since the conventional commutation type DC circuit breaker described above generates a zero point by energizing the commutation current when an excessive current flows in the DC circuit, the commutation switch and the commutation circuit The main circuit and the commutation circuit are electrically connected via the forming switch, but if each switch cannot be closed due to a malfunction such as an accident, the failure to shut off the accident current cannot be immediately known. There is a concern that it may affect other devices.

本発明は上述の点に鑑みなされたもので、その目的とするところは、事故等の不具合が発生しても、事故電流を瞬時に遮断して事故波及を防止することのできる転流式直流遮断器及びその監視方法を提供することにある。   The present invention has been made in view of the above-described points, and the object of the present invention is to provide a commutation type DC capable of instantaneously interrupting an accident current and preventing the accident from spreading even if a malfunction such as an accident occurs. It is providing the circuit breaker and its monitoring method.

本発明の転流式直流遮断器は、上記目的を達成するために、直流電源と負荷を接続する主回路に直列に挿入された主開閉器と、該主開閉器に直列に接続された副開閉器と、転流スイッチと転流用コンデンサ及び前記転流用コンデンサを介して前記転流スイッチの反対側に設けられた転流回路形成スイッチが直列に接続されて構成され、前記主開閉器に並列に接続された転流回路と、前記転流用コンデンサに電荷を蓄積するコンデンサ充電装置と、前記転流回路に接続され前記転流用コンデンサの電圧を測定する計測用変圧器と、該計測用変圧器で測定した前記転流用コンデンサの電圧変動を検出する検出ユニットとを備え、前記検出ユニットにより検出された前記転流用コンデンサの電圧変動に基づいて、前記転流用コンデンサに充電された電荷を放電する前記転流スイッチ及び前記転流回路形成スイッチの閉路を監視することを特徴とする。   In order to achieve the above object, a commutation type DC circuit breaker according to the present invention includes a main switch inserted in series in a main circuit connecting a DC power source and a load, and a sub switch connected in series to the main switch. A switch, a commutation switch, a commutation capacitor, and a commutation circuit forming switch provided on the opposite side of the commutation switch via the commutation capacitor are connected in series and are parallel to the main switch A commutation circuit connected to the commutation circuit, a capacitor charging device for accumulating electric charge in the commutation capacitor, a measurement transformer connected to the commutation circuit and measuring a voltage of the commutation capacitor, and the measurement transformer Detecting the voltage fluctuation of the commutation capacitor measured in step (b), and charging the commutation capacitor based on the voltage fluctuation of the commutation capacitor detected by the detection unit. Characterized by monitoring the commutation switch and closing of said commutation circuit forming switch to discharge the load.

また、本発明の転流式直流遮断器の監視方法は、上記目的を達成するために、直流電源と負荷を接続する主回路に直列に挿入された主開閉器と、該主開閉器に直列に接続された副開閉器と、転流スイッチと転流用コンデンサ及び前記転流用コンデンサを介して前記転流スイッチの反対側に設けられた転流回路形成スイッチが直列に接続されて構成され、前記主開閉器に並列に接続された転流回路と、前記転流用コンデンサに電荷を蓄積するコンデンサ充電装置と、前記転流回路に接続され前記転流用コンデンサの電圧を測定する計測用変圧器と、該計測用変圧器で測定した前記転流用コンデンサの電圧変動を検出する検出ユニットとを備えた転流式直流遮断器を監視するに当たり、前記検出ユニットにより検出された前記転流用コンデンサの電圧変動に基づいて、前記転流用コンデンサの充電した電荷を放電する前記転流スイッチ及び前記転流回路形成スイッチの閉路を監視することを特徴とする。   In order to achieve the above object, the commutation type DC circuit breaker monitoring method of the present invention includes a main switch inserted in series in a main circuit connecting a DC power source and a load, and the main switch in series. A commutation switch, a commutation switch, a commutation capacitor, and a commutation circuit forming switch provided on the opposite side of the commutation switch through the commutation capacitor, connected in series, and A commutation circuit connected in parallel to the main switch, a capacitor charging device for storing electric charge in the commutation capacitor, a measurement transformer connected to the commutation circuit and measuring a voltage of the commutation capacitor, In monitoring a commutation type DC circuit breaker provided with a detection unit for detecting a voltage fluctuation of the commutation capacitor measured by the measurement transformer, the commutation capacitor detected by the detection unit Based on the pressure fluctuations, characterized by monitoring the commutation switch and closing of said commutation circuit forming switch to discharge the charged electric charge of the commutation capacitor.

本発明によれば、事故等の不具合が発生しても、その不具合による事故電流を瞬時に検出し、逸早く事故電流を直流電源より切離すことが可能となり、事故の波及を防止することができる。   According to the present invention, even if a malfunction such as an accident occurs, it is possible to instantaneously detect the accident current due to the malfunction and quickly disconnect the accident current from the DC power source, thereby preventing the spread of the accident. .

本発明の転流式直流遮断器の実施例１を示す直流回路の回路構成図である。It is a circuit block diagram of the DC circuit which shows Example 1 of the commutation type DC circuit breaker of the present invention. 本発明の転流式直流遮断器の監視方法を説明するためのフローチャートである。It is a flowchart for demonstrating the monitoring method of the commutation type DC circuit breaker of this invention.

以下、図示した実施例に基づいて本発明の転流式直流遮断器及びその監視方法を説明する。   Hereinafter, the commutation type DC circuit breaker and the monitoring method thereof according to the present invention will be described based on the illustrated embodiments.

図１に、本発明の転流式直流遮断器の実施例１における直流回路の回路構成を示す。   FIG. 1 shows a circuit configuration of a DC circuit in Embodiment 1 of a commutation type DC circuit breaker according to the present invention.

該図に示すように、本実施例の転流式直流遮断器１４は、直流電源９と負荷１０を接続する主回路１に直列に挿入された主開閉器３と、この主開閉器３に直列に接続された副開閉器４と、主開閉器３と副開閉器４との間に接続された可飽和リアクトル８と、主開閉器３と可飽和リアクトル８との直列回路に対して並列接続されたエネルギ吸収非直線抵抗体７と、主回路１の過電流を検出する電流検出器１２と、図１に点線矢印で示すように、主開閉器３、副開閉器４、転流スイッチ５、転流回路形成スイッチ５ａのそれぞれに開閉指令を出す駆動指令装置１３と、転流スイッチ５と転流用コンデンサ６及び転流用コンデンサ６を介して転流スイッチ５の反対側に設けられた転流回路形成スイッチ５ａが直列に接続されて構成され、主開閉器３に並列に接続された転流回路２と、転流用コンデンサ６に電荷を蓄積するコンデンサ充電装置１１（転流用コンデンサ６は、コンデンサ充電装置１１により予め主回路１と逆の極性に充電されている）と、転流回路２に接続され転流用コンデンサ６の電圧を測定する計測用変圧器１５と、この計測用変圧器１５で測定した転流用コンデンサ６の電圧変動を検出する検出ユニット１６と、この検出ユニット１６で検出された信号を基に、転流スイッチ５及び転流回路形成スイッチ５ａが開路（点弧失敗）であることを表示し、警報を出す監視装置１７とから概略構成されている。 As shown in the figure, a commutation type DC circuit breaker 14 of this embodiment includes a main switch 3 inserted in series in a main circuit 1 connecting a DC power source 9 and a load 10, and the main switch 3. Parallel to the series circuit of the main switch 3 and the saturable reactor 8, the sub switch 4 connected in series, the saturable reactor 8 connected between the main switch 3 and the sub switch 4, and the main switch 3. A connected energy absorbing nonlinear resistor 7, a current detector 12 for detecting an overcurrent of the main circuit 1, and a main switch 3, a sub switch 4, a commutation switch as indicated by a dotted arrow in FIG. 5, a drive command device 13 for issuing an opening / closing command to each of the commutation circuit formation switches 5a, a commutation switch 5, a commutation capacitor 6, and a commutation switch provided on the opposite side of the commutation switch 5 via the commutation capacitor 6. The flow circuit forming switch 5a is connected in series, and the main switch 3 The commutation circuit 2 connected in parallel and the capacitor charging device 11 that accumulates electric charge in the commutation capacitor 6 (the commutation capacitor 6 is charged in advance with the opposite polarity to the main circuit 1 by the capacitor charging device 11). A measurement transformer 15 connected to the commutation circuit 2 for measuring the voltage of the commutation capacitor 6, a detection unit 16 for detecting the voltage fluctuation of the commutation capacitor 6 measured by the measurement transformer 15, On the basis of the signal detected by the detection unit 16, the commutation switch 5 and the commutation circuit formation switch 5a are generally configured from a monitoring device 17 that displays that the circuit is open (failed to fire) and issues an alarm. .

次に、図１及び図２を用いて主回路１に事故が発生し、過電流を電流検出器１２が検出した場合の通常の遮断原理及び本発明の実施例１に係る遮断失敗時の転流式直流遮断器の監視方法について説明する。   Next, referring to FIG. 1 and FIG. 2, when an accident occurs in the main circuit 1 and the current detector 12 detects an overcurrent, the normal interruption principle and the switching at the time of interruption failure according to the first embodiment of the present invention will be described. A monitoring method for the flow type DC circuit breaker will be described.

図２のステップ（Ａ）で直流回路に過大な電流が流れる（主回路事故）と、ステップ（Ｂ）で電流検出器１２により過電流が検出される。この過電流の検出による駆動指令装置１３からの指令に基づき、主回路１の電流を遮断する場合は、主開閉器３を開極直後に、通常はステップ（Ｄ）で転流スイッチ５及び転流回路形成スイッチ５ａが点弧され、転流用コンデンサ６、転流スイッチ５、主開閉器３、可飽和リアクトル８の転流回路２が形成されて、ステップ（Ｅ）で転流用コンデンサ６が放電してコンデンサ電圧が低下し、主回路電流１ａと逆方向に転流用コンデンサ６の放電に伴う転流電流２ａが流れる。この転流電流２ａが主回路電流１ａに重畳され、主開閉器３の電流が零点に達すると、ステップ（Ｆ）で主開閉器３が消弧して転流式直流遮断器１４が開放することで、ステップ（Ｌ）で事故電流が遮断される。   If an excessive current flows through the DC circuit in step (A) in FIG. 2 (main circuit fault), the overcurrent is detected by the current detector 12 in step (B). When the current of the main circuit 1 is cut off based on a command from the drive command device 13 based on the detection of the overcurrent, the commutation switch 5 and the commutation switch 5 and the commutation switch are usually immediately after opening the main switch 3 in step (D). The commutation circuit forming switch 5a is fired, the commutation capacitor 6, the commutation switch 5, the main switch 3, and the commutation circuit 2 of the saturable reactor 8 are formed, and the commutation capacitor 6 is discharged in step (E). As a result, the capacitor voltage decreases, and the commutation current 2a accompanying the discharge of the commutation capacitor 6 flows in the opposite direction to the main circuit current 1a. When this commutation current 2a is superimposed on the main circuit current 1a and the current of the main switch 3 reaches the zero point, the main switch 3 is extinguished and the commutation type DC circuit breaker 14 is opened in step (F). Thus, the accident current is interrupted in step (L).

また、転流スイッチ５及び転流回路形成スイッチ５ａが駆動指令装置１３の指令により点弧されない場合、従来は事故電流が遮断できず転流式直流遮断器１４が損傷し、本来開放しない遮断器を連動により順に開放して事故電流を遮断していたため、事故電流の遮断に時間が掛かってしまい、不具合のある転流式直流遮断器１４を持つ変電所全体の焼失にまで事故が波及する恐れがあった。   Further, when the commutation switch 5 and the commutation circuit formation switch 5a are not ignited by the command of the drive command device 13, conventionally, the fault current cannot be interrupted, the commutation type DC circuit breaker 14 is damaged, and the circuit breaker is not originally opened. Since the accident current was interrupted by opening the doors sequentially in conjunction with each other, it takes time to interrupt the accident current, and the accident may spread to the entire substation with a faulty commutation type DC circuit breaker 14 was there.

そこで、本実施例では、ステップ（Ｃ）で転流式直流遮断器１４の開放指令より、ステップ（Ｄ）の駆動指令装置１３からの指令による転流スイッチ５及び転流回路形成スイッチ５ａの点弧の失敗か否か（開閉）を監視するようにしている。   Therefore, in the present embodiment, the commutation switch 5 and the commutation circuit forming switch 5a according to the command from the drive command device 13 in step (D) from the command to open the commutation type DC circuit breaker 14 in step (C). Whether or not the arc has failed (opening and closing) is monitored.

その監視方法としては、ステップ（Ｇ）で測定部である計測用変圧器１５により転流用コンデンサ６の電圧を測定し、この測定した転流用コンデンサ６の電圧が変化（電圧変動）しないこと、即ち、転流回路２に転流電流２ａが通電されていないことを検出ユニット１６で検出することで、転流スイッチ５及び転流回路形成スイッチ５ａの点弧失敗と判断し、ステップ（Ｈ）で補助リレーに通電することで異常を検出すると、ステップ（Ｉ）で、常時変電所の異常や状態を確認して機器の操作をする監視装置１７に、補助リレー接点の動作に伴い信号を送信して警報（ブザー等）を出し表示する。その後、ステップ（Ｊ）で関連遮断器に開放指令が与えられ、ステップ（Ｋ）で関連遮断器が開放されて事故電流が遮断される（図２のステップ（Ｌ））。   As the monitoring method, in step (G), the voltage of the commutation capacitor 6 is measured by the measurement transformer 15 which is a measurement unit, and the measured voltage of the commutation capacitor 6 does not change (voltage fluctuation). The detection unit 16 detects that the commutation current 2a is not energized in the commutation circuit 2, thereby determining that the commutation switch 5 and the commutation circuit formation switch 5a have failed to fire, and in step (H) When an abnormality is detected by energizing the auxiliary relay, in step (I), a signal is transmitted to the monitoring device 17 that constantly checks the abnormality and state of the substation and operates the device along with the operation of the auxiliary relay contact. Alarm (buzzer, etc.) is displayed. Thereafter, an opening command is given to the related circuit breaker in step (J), and the related circuit breaker is opened in step (K) to cut off the accident current (step (L) in FIG. 2).

上述した監視装置１７の警報・表示により、監視装置１７の管理者は異常を知ることができると共に、監視装置１７から転流式直流遮断器１４の不具合時に事故電流遮断に必要な、より高電圧な当該変電所の上位遮断器および当該変電所の他回線のき電用遮断器に開放指令を出すことで瞬時に事故電流を遮断することができる。   The alarm / display of the monitoring device 17 described above allows the administrator of the monitoring device 17 to know the abnormality, and the higher voltage necessary for interrupting the accident current when the commutation type DC circuit breaker 14 malfunctions from the monitoring device 17. The fault current can be instantaneously interrupted by issuing an open command to the upper circuit breaker of the substation and the feeder circuit breaker on the other line of the substation.

このような本実施例とすることにより、事故等の不具合が発生しても、その不具合による事故電流を瞬時に検出し、逸早く事故電流を直流電源より切離すことが可能となり、事故の波及を防止することができるため、変電所全体に被害を拡大させることなく、被害を最小限に事故を防止することが可能となる。   By adopting this embodiment, even if a malfunction such as an accident occurs, it is possible to instantly detect the accident current due to the malfunction and quickly disconnect the accident current from the DC power source, thereby spreading the accident. Therefore, it is possible to prevent accidents with minimal damage without spreading damage to the entire substation.

なお、本発明は上記した実施例に限定されるものではなく、様々な変形例が含まれる。例えば、上記した実施例は本発明を分かりやすく説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。また、ある実施例の構成の一部を他の実施例の構成に置き換えることが可能であり、また、ある実施例の構成に他の実施例の構成を加えることも可能である。また、各実施例の構成の一部について、他の構成の追加・削除・置換をすることが可能である。   In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

１…主回路、１ａ…主回路電流、２…転流回路、２ａ…転流電流、３…主開閉器、４…副開閉器、５…転流スイッチ、５ａ…転流回路形成スイッチ、６…転流用コンデンサ、７…エネルギ吸収非直線抵抗体、８…可飽和リアクトル、９…直流電源、１０…負荷、１１…コンデンサ充電装置、１２…電流検出器、１３…駆動指令装置、１４…転流式直流遮断器、１５…計測用変圧器、１６…検出ユニット、１７…監視装置。   DESCRIPTION OF SYMBOLS 1 ... Main circuit, 1a ... Main circuit current, 2 ... Commutation circuit, 2a ... Commutation current, 3 ... Main switch, 4 ... Sub switch, 5 ... Commutation switch, 5a ... Commutation circuit formation switch, 6 ... Commutation capacitor, 7 ... Energy absorption nonlinear resistor, 8 ... Saturable reactor, 9 ... DC power supply, 10 ... Load, 11 ... Capacitor charging device, 12 ... Current detector, 13 ... Drive command device, 14 ... Current-type DC circuit breaker, 15 ... measuring transformer, 16 ... detection unit, 17 ... monitoring device.

Claims (9)

直流電源と負荷を接続する主回路に直列に挿入された主開閉器と、該主開閉器に直列に接続された副開閉器と、転流スイッチと転流用コンデンサ及び前記転流用コンデンサを介して前記転流スイッチの反対側に設けられた転流回路形成スイッチが直列に接続されて構成され、前記主開閉器に並列に接続された転流回路と、前記転流用コンデンサに電荷を蓄積するコンデンサ充電装置と、前記転流回路に接続され前記転流用コンデンサの電圧を測定する計測用変圧器と、該計測用変圧器で測定した前記転流用コンデンサの電圧変動を検出する検出ユニットとを備え、
前記検出ユニットにより検出された前記転流用コンデンサの電圧変動に基づいて、前記転流用コンデンサに充電された電荷を放電する前記転流スイッチ及び前記転流回路形成スイッチの閉路を監視することを特徴とする転流式直流遮断器。 Via a main switch inserted in series in a main circuit connecting a DC power supply and a load, a sub switch connected in series to the main switch, a commutation switch, a commutation capacitor, and the commutation capacitor A commutation circuit forming switch provided on the opposite side of the commutation switch is connected in series, and a commutation circuit connected in parallel to the main switch, and a capacitor for storing electric charge in the commutation capacitor A charging device; a measurement transformer connected to the commutation circuit for measuring the voltage of the commutation capacitor; and a detection unit for detecting voltage fluctuation of the commutation capacitor measured by the measurement transformer,
Based on the voltage fluctuation of the commutation capacitor detected by the detection unit, the closed circuit of the commutation switch and the commutation circuit forming switch for discharging the charge charged in the commutation capacitor is monitored. A commutation type DC circuit breaker. 請求項１に記載の転流式直流遮断器において、
前記検出ユニットにより、前記転流用コンデンサの電圧が変動しないことが検出されたら前記転流スイッチ及び前記転流回路形成スイッチの開路と判断することを特徴とする転流式直流遮断器。 The commutation type DC circuit breaker according to claim 1,
When the detection unit detects that the voltage of the commutation capacitor does not fluctuate, it is determined that the commutation switch and the commutation circuit forming switch are open . 請求項２に記載の転流式直流遮断器において、
前記検出ユニットにより、前記転流用コンデンサの電圧が変動しないで前記転流回路に転流電流が通電されていないことが検出されたら前記転流スイッチ及び前記転流回路形成スイッチの開路と判断することを特徴とする転流式直流遮断器。 The commutation type DC circuit breaker according to claim 2,
If the detection unit detects that no commutation current is passed through the commutation circuit without changing the voltage of the commutation capacitor, it is determined that the commutation switch and the commutation circuit formation switch are open. A commutation type DC circuit breaker characterized by 請求項１乃至３のいずれか１項に記載の転流式直流遮断器において、
前記検出ユニットで検出された信号を基に、前記転流スイッチ及び前記転流回路形成スイッチが開路状態であることを表示し、警報を出す監視装置を備えていることを特徴とする転流式直流遮断器。 In the commutation type DC circuit breaker according to any one of claims 1 to 3,
Based on the signal detected by the detection unit, the commutation type is provided with a monitoring device that displays that the commutation switch and the commutation circuit formation switch are in an open state and issues an alarm. DC circuit breaker. 直流電源と負荷を接続する主回路に直列に挿入された主開閉器と、該主開閉器に直列に接続された副開閉器と、転流スイッチと転流用コンデンサ及び前記転流用コンデンサを介して前記転流スイッチの反対側に設けられた転流回路形成スイッチが直列に接続されて構成され、前記主開閉器に並列に接続された転流回路と、前記転流用コンデンサに電荷を蓄積するコンデンサ充電装置と、前記転流回路に接続され前記転流用コンデンサの電圧を測定する計測用変圧器と、該計測用変圧器で測定した前記転流用コンデンサの電圧変動を検出する検出ユニットとを備えた転流式直流遮断器を監視するに当たり、
前記検出ユニットにより検出された前記転流用コンデンサの電圧変動に基づいて、前記転流用コンデンサの充電した電荷を放電する前記転流スイッチ及び前記転流回路形成スイッチの閉路を監視することを特徴とする転流式直流遮断器の監視方法。 Via a main switch inserted in series in a main circuit connecting a DC power supply and a load, a sub switch connected in series to the main switch, a commutation switch, a commutation capacitor, and the commutation capacitor A commutation circuit forming switch provided on the opposite side of the commutation switch is connected in series, and a commutation circuit connected in parallel to the main switch, and a capacitor for storing electric charge in the commutation capacitor A charging device; a measurement transformer connected to the commutation circuit for measuring the voltage of the commutation capacitor; and a detection unit for detecting a voltage fluctuation of the commutation capacitor measured by the measurement transformer. In monitoring the commutation type DC circuit breaker,
The closed circuit of the commutation switch and the commutation circuit forming switch for discharging the charged electric charge of the commutation capacitor is monitored based on the voltage fluctuation of the commutation capacitor detected by the detection unit. Monitoring method for commutation type DC circuit breakers. 請求項５に記載の転流式直流遮断器の監視方法において、
前記検出ユニットにより前記転流用コンデンサの電圧が変動しないことが検出されたら、前記転流スイッチ及び前記転流回路形成スイッチの開路と判断することを特徴とする転流式直流遮断器の監視方法。 In the monitoring method of the commutation type DC circuit breaker according to claim 5,
When the detection unit detects that the voltage of the commutation capacitor does not fluctuate, it is determined that the commutation switch and the commutation circuit forming switch are open . 請求項６に記載の転流式直流遮断器の監視方法において、
前記検出ユニットにより前記転流用コンデンサの電圧が変動しないで前記転流回路に転流電流が通電されていないことが検出されたら、前記転流スイッチ及び前記転流回路形成スイッチの開路と判断することを特徴とする転流式直流遮断器の監視方法。 In the monitoring method of the commutation type DC circuit breaker according to claim 6,
If it is detected by the detection unit that the commutation current is not supplied to the commutation circuit without changing the voltage of the commutation capacitor, it is determined that the commutation switch and the commutation circuit forming switch are open. A method for monitoring a commutated DC circuit breaker. 請求項５乃至７のいずれか１項に記載の転流式直流遮断器の監視方法において、
前記検出ユニットで検出された信号を基に、前記転流スイッチ及び前記転流回路形成スイッチが開路状態であることを監視装置で表示し、警報を出すことを特徴とする転流式直流遮断器の監視方法。 In the monitoring method of the commutation type DC circuit breaker according to any one of claims 5 to 7,
Wherein based on the signal detected by the detecting unit, said commutation switch and the commutation circuit forming the switch is open circuit and displayed on the monitoring device, the commutation type DC breaker, characterized in that alerting Monitoring method. 請求項８に記載の転流式直流遮断器の監視方法において、
前記転流用コンデンサの充電電圧の低下を前記検出ユニットで検出することにより、前記転流式直流遮断器による事故電流の遮断失敗を前記監視装置へ表示すると共に、前記転流式直流遮断器の故障時に開放する上位側の遮断器及びき電側遮断器の開放指令を行うことを特徴とする転流式直流遮断器の監視方法。 In the monitoring method of the commutation type DC circuit breaker according to claim 8,
By detecting a decrease in the charging voltage of the commutation capacitor with the detection unit, the failure failure of the commutation type DC circuit breaker is displayed on the monitoring device, and the commutation type DC circuit breaker is faulty. A method for monitoring a commutation type DC circuit breaker, characterized in that a command to open the upper circuit breaker and the feeding circuit breaker that are sometimes opened is provided.
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JP7446973B2 (en) 2020-10-22 2024-03-11 株式会社東芝 DC current interrupter

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6282622A (en) * 1985-10-08 1987-04-16 三菱電機株式会社 Dc circuit breaker circuit
US4740858A (en) * 1985-08-06 1988-04-26 Mitsubishi Denki Kabushiki Kaisha Zero-current arc-suppression dc circuit breaker
JP2726506B2 (en) * 1989-08-21 1998-03-11 株式会社東芝 Uninterruptible power supply system
JP3135338B2 (en) * 1992-02-21 2001-02-13 株式会社日立製作所 Commutation type DC circuit breaker
JPH07177648A (en) * 1993-12-21 1995-07-14 Toshiba Corp Dc interrupting system for superconducting unit
JP3443926B2 (en) * 1994-04-06 2003-09-08 株式会社日立製作所 Commutation type DC circuit breaker
JPH0950741A (en) * 1995-08-08 1997-02-18 Mitsubishi Electric Corp Self-excited commutation type dc circuit breaker
JP4413547B2 (en) 2003-07-25 2010-02-10 株式会社東芝 DC circuit breaker
JP4492610B2 (en) * 2006-12-28 2010-06-30 株式会社日立製作所 Circuit breaker and its switching method
TW200835105A (en) * 2007-02-08 2008-08-16 Hitachi Ltd DC switchgear provided with a commutation-type DC circuit breaker
JP5275147B2 (en) 2009-06-12 2013-08-28 株式会社日立製作所 Operation method of commutation type DC circuit breaker
CN102484339A (en) * 2009-08-07 2012-05-30 松下电器产业株式会社 Direct Current Outlet
WO2011141055A1 (en) * 2010-05-11 2011-11-17 Abb Technology Ag A high voltage dc breaker apparatus
WO2012100831A1 (en) * 2011-01-27 2012-08-02 Alstom Technology Ltd Circuit breaker apparatus

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