WO2022249366A1 - Power supply system switching device and power supply system switching method - Google Patents

Power supply system switching device and power supply system switching method Download PDF

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Publication number
WO2022249366A1
WO2022249366A1 PCT/JP2021/020088 JP2021020088W WO2022249366A1 WO 2022249366 A1 WO2022249366 A1 WO 2022249366A1 JP 2021020088 W JP2021020088 W JP 2021020088W WO 2022249366 A1 WO2022249366 A1 WO 2022249366A1
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Prior art keywords
power supply
current
supply system
circuit breakers
switching device
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PCT/JP2021/020088
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French (fr)
Japanese (ja)
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尚倫 中村
裕二 樋口
直樹 花岡
徹 田中
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日本電信電話株式会社
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Priority to JP2023523837A priority Critical patent/JPWO2022249366A1/ja
Priority to PCT/JP2021/020088 priority patent/WO2022249366A1/en
Publication of WO2022249366A1 publication Critical patent/WO2022249366A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network

Definitions

  • the present invention relates to a power supply system switching device and a power supply system switching method.
  • Patent Literature 1 discloses a direct-current circuit breaker that performs switching using a semiconductor circuit breaker that cuts off quickly.
  • the disclosed technology aims to suppress time loss for controlling the operation of multiple circuit breakers.
  • the disclosed technology is a power supply system switching device for switching a power supply system from a power supply device, and includes a first plurality of first power supply systems that interrupt current in a first system and cancel current interruption in a second system.
  • a circuit breaker an optical modulator that modulates and emits incident light based on a voltage that is applied in proportion to the current detected by the first plurality of circuit breakers; a modulation detector for detecting modulation of light; and a second plurality of interruptions for interrupting the current in the first system and unblocking the current in the second system when the modulation detector detects modulation. and a power supply system switching device.
  • the time loss for controlling the operation of multiple circuit breakers can be suppressed.
  • FIG. 1 is a first diagram showing an example of a configuration of a conventional power supply system switching device
  • FIG. FIG. 10 is a second diagram showing an example of the configuration of a conventional power supply system switching device
  • It is a figure showing an example of composition of a feed system switching device concerning an embodiment of the invention.
  • It is a figure which shows an example of a structure of a semiconductor circuit breaker.
  • FIG. 4 is a first diagram showing an example of the operation of the power supply system switching device according to the embodiment of the present invention
  • FIG. 5 is a second diagram showing an example of the operation of the power supply system switching device according to the embodiment of the present invention;
  • FIG. 1 is a first diagram showing an example of the configuration of a conventional power supply system switching device.
  • a conventional feed system switching device is composed of a plurality of circuit breakers 90a, 90b, 90c and 90d.
  • the power supply system switching device is configured to include a circuit breaker only in the power cable 40a on the positive electrode side, but the power cable 40b on the negative electrode side is also equipped with a similar circuit breaker. Also good.
  • the DC power supplied from the power supply device 10 to the load device 20 is supplied by two systems, system 1 and system 2 . Normally, power is supplied from system 1, and when an accident such as a short circuit occurs in system 1, it is switched to system 2.
  • the circuit breaker 90a when an accident such as a short circuit occurs at the accident point 41 and the circuit breaker 90a detects the occurrence of the accident, the circuit breaker 90a is opened and the circuit breaker 90b is closed. Note that opening is an operation of interrupting current, and closing is an operation of canceling the interruption of current. Subsequently, the circuit breaker 90c is opened and the circuit breaker 90d is closed.
  • FIG. 2 is a second diagram showing an example of the configuration of a conventional power supply system switching device.
  • the feed system switching device shown in FIG. 2 includes a plurality of semiconductor circuit breakers 30a, 30b, 30c and 30d.
  • the breaking speed by itself is faster, but the semiconductor circuit breaker 30a that detects the occurrence of an accident detects a short-circuit current and converts the detection of the short-circuit current into an electrical signal (or optical signal).
  • semiconductor circuit breakers 30c and 30d send electrical signals to semiconductor circuit breakers 30c and 30d
  • semiconductor circuit breakers 30c and 30d receive the electrical signals (or optical signals), and analyze that the received signals detect short-circuit current in semiconductor circuit breaker 30a
  • FIG. 3 is a diagram showing an example of the configuration of the power supply system switching device according to this embodiment.
  • the power supply system switching device 1 according to the present embodiment includes semiconductor breakers 30a, 30b, 30c and 30d similar to those in FIG. 2, and further includes an optical modulator 50 and a modulation detector 60.
  • the optical modulator 50 modulates the light emitted from the light source 70 toward the light receiving section 80 when the occurrence of an accident is detected by the semiconductor circuit breaker 30a or the semiconductor circuit breaker 30b.
  • the modulation detector 60 detects modulation of light emitted from the light source 70 toward the light receiving section 80 .
  • Semiconductor circuit breaker 30c and semiconductor circuit breaker 30d switch between opening and closing when modulation detector 60 detects modulation.
  • FIG. 4 is a diagram showing an example of the configuration of a semiconductor circuit breaker.
  • the semiconductor circuit breaker 30 shown in FIG. 4 has a configuration common to the semiconductor circuit breakers 30a, 30b, 30c and 30d.
  • the semiconductor circuit breaker 30 includes a control circuit 31, an IGBT (Insulated Gate Bipolar Transistor) 32, a voltage suppression circuit 33, and a current sensor 34.
  • IGBT Insulated Gate Bipolar Transistor
  • the control circuit 31 controls the opening and closing of the IGBT 32 via the control line 35.
  • FIG. 4 shows a built-in power supply type, power may be supplied from a power supply (not shown).
  • the IGBT 32 is an insulated gate bipolar transistor, and is controlled by the control circuit 31 to cut off the current flowing through the power cable 40a on the positive electrode side or cancel the cutoff of the current.
  • the voltage suppression circuit 33 is a capacitor, a diode, or the like, and is a circuit that suppresses a rise in voltage generated between the power cable 40a on the positive electrode side and the power cable 40b on the negative electrode side.
  • the two voltage suppression circuits 33 connected to both ends of the IGBT 32 can avoid a sudden rise in voltage due to current interruption.
  • the current sensor 34 measures the value of the current flowing through the power cable 40a and transmits a signal indicating the current value to the control circuit 31. Thereby, the control circuit 31 detects the occurrence of the short-circuit current.
  • the power cable 40a in FIG. 4 may be read as the negative electrode side and the power cable 40b as the positive electrode side.
  • FIG. 5 is a first diagram showing an example of the operation of the power supply system switching device according to the embodiment of the present invention.
  • the optical modulator 50 includes a polarizer 51 and electro-optic crystals 52a and 52b.
  • the polarizer 51 polarizes the light incident from the light source 70 in a certain direction.
  • the electro-optic crystals 52a and 52b are elements for changing the polarization direction of light by applying a voltage.
  • the modulation detector 60 includes half mirrors 61c, 61d, analyzers 62c, 62d, and O/E converters 63c, 63d.
  • the half mirrors 61c and 61d are mirrors that reflect part of the incident light toward the analyzers 62c and 62d and transmit part of the light.
  • the analyzers 62c and 62d are elements for detecting the presence or absence of polarized light and the direction of the plane of polarization.
  • the O/E converters 63c and 63d are devices that convert optical signals into electrical signals.
  • the semiconductor circuit breaker 30a and the semiconductor circuit breaker 30b and the semiconductor circuit breaker 30c and the semiconductor circuit breaker 30d are connected via a link line 42 so as to be communicable.
  • the optical modulator 50 and the modulation detector 60 are connected by a polarization maintaining fiber 43 .
  • step S11 When power is being supplied in system 1, a short circuit occurs at the fault point between semiconductor circuit breaker 30a and semiconductor circuit breaker 30c (step S11), and semiconductor circuit breaker 30a detects the short circuit (step S12).
  • the semiconductor circuit breaker 30a controls the IGBT 32 by the control circuit 31 to cut off the current in the system 1 (step S13), and also transmits a signal to the semiconductor circuit breaker 30b via the link line 42 (step S14).
  • Semiconductor circuit breaker 30 b that has received the signal cancels the cutoff of the current in system 2 .
  • the switching operation of the semiconductor circuit breaker 30a and the semiconductor circuit breaker 30b is instantaneously performed.
  • step S15 when the semiconductor circuit breaker 30a cuts off the current in the system 1, the voltage V1 is applied to the electro-optic crystal 52a at that moment (step S15), and the plane of polarization of the linearly polarized wave incident from the light source 70 is changed to +45 degrees, for example. Rotate (step S16).
  • the light emitted from the optical modulator 50 enters the modulation detector 60 via the polarization maintaining fiber 43 .
  • the modulation detector 60 In the case of light whose plane of polarization has been rotated by +45 degrees, it is reflected by the half mirror 61c and enters the analyzer 62c.
  • the analyzer 62c detects the incident light, the O/E converter 63c converts the optical signal into an electrical signal (step S17).
  • the semiconductor circuit breaker 30c receives the converted electric signal, controls the IGBT 32 by the control circuit 31, cuts off the current in the system 1 (step S18), and simultaneously transmits the signal to the semiconductor circuit breaker 30d via the link line 42. is transmitted (step S19).
  • Semiconductor circuit breaker 30 d that has received the signal releases the cutoff of the current in system 2 .
  • the switching operation of the semiconductor circuit breaker 30c and the semiconductor circuit breaker 30d is instantaneously performed, and the switching from the system 1 (an example of the first power supply system) to the system 2 (an example of the second power supply system) is completed. do.
  • FIG. 6 is a second diagram showing an example of the operation of the power supply system switching device according to the embodiment of the present invention.
  • a short circuit occurs at the fault point between semiconductor circuit breaker 30b and semiconductor circuit breaker 30d (step S21), and semiconductor circuit breaker 30b detects the short circuit (step S22).
  • the semiconductor circuit breaker 30b controls the IGBT 32 by the control circuit 31 to cut off the current in the system 2 (step S23), and also transmits a signal to the semiconductor circuit breaker 30a via the link line 42 (step S24). Upon receiving the signal, the semiconductor circuit breaker 30a cancels the interruption of the current in the system 1. As a result, the switching operation of the semiconductor circuit breaker 30a and the semiconductor circuit breaker 30b is instantaneously performed.
  • step S25 the voltage V2 is applied to the electro-optic crystal 52b at that instant (step S25), and the plane of polarization of the linearly polarized wave incident from the light source 70 is changed to -45, for example. Rotate by degrees (step S26).
  • the light emitted from the optical modulator 50 enters the modulation detector 60 via the polarization maintaining fiber 43 . If the light has its plane of polarization rotated by -45 degrees, it is reflected by the half mirror 61d and enters the analyzer 62d. When the analyzer 62d detects the incident light, the O/E converter 63d converts the optical signal into an electrical signal (step S27).
  • the semiconductor circuit breaker 30d receives the converted electrical signal, controls the IGBT 32 by the control circuit 31, cuts off the current in the system 2 (step S28), and simultaneously transmits the signal to the semiconductor circuit breaker 30c via the link line 42. is transmitted (step S29).
  • the semiconductor circuit breaker 30c that has received the signal cancels the interruption of the current in the system 1.
  • the switching operation of the semiconductor circuit breaker 30c and the semiconductor circuit breaker 30d is instantaneously performed, and the switching from the system 2 (an example of the first power supply system) to the system 1 (an example of the second power supply system) is completed. do.
  • the light modulated by the optical modulator 50 connected to the first plurality of circuit breakers (semiconductor circuit breakers 30a and 30b) is converted to the second plurality of circuit breakers.
  • a modulation detector 60 connected to the circuit breakers (semiconductor circuit breakers 30c and 30d) detects. Thereby, in the transmission of information from the first plurality of circuit breakers (semiconductor circuit breakers 30a, 30b) to the second plurality of circuit breakers (semiconductor circuit breakers 30c, 30d), the first plurality of circuit breakers are short-circuited.
  • the information that the short-circuit current is detected in the first plurality of circuit breakers is not converted into an electrical signal (or an optical signal) (without using a communication protocol).
  • the information that the short circuit current is detected in the conventional method is converted into an electric signal (or an optical signal), and the electric signal is
  • the time loss can be suppressed by converting the signal so that it can be transmitted over an IP network and converting it into a signal for controlling a circuit breaker on the receiving side of the signal.
  • the voltage V1 and the voltage V2 described above may be voltage values generated when the current sensor 34 detects current, or may be voltage values obtained by stepping up or stepping down the voltage value generated by the current sensor 34 .
  • the configuration of the optical modulator 50 and the modulation detector 60 shown in the present embodiment is an example, and an optical modulation technology that modulates light with a voltage and a modulation detection technology that detects the modulated light can be used. But it's okay.
  • the semiconductor circuit breakers 30a, 30b, 30c, and 30d are examples of circuit breakers.
  • the circuit breaker may be an electronic switch, an electrically controllable breaker, or the like.
  • a power supply system switching device for switching a power supply system from a power supply, a plurality of first circuit breakers that interrupt the current in the first system and cancel the interruption of the current in the second system; an optical modulator that modulates and emits incident light based on a voltage that is applied in proportion to the current detected by the first plurality of circuit breakers; a modulation detector for detecting modulation of light incident from the optical modulator; a second plurality of circuit breakers that, when the modulation detector detects modulation, interrupts current in the first system and unblocks current in the second system; Power supply system switching device.
  • each of the first plurality of circuit breakers includes a control circuit, an IGBT, and a current sensor;
  • the control circuit controls the IGBT to cut off the current in the first system.
  • Each of the first plurality of circuit breakers is communicably connected to each other via a link line, and when any one of the circuit breakers included in the first plurality of circuit breakers detects a current, the first circuit breaker Sending a signal via the link line to other circuit breakers included in the plurality of circuit breakers, 3.
  • Each of the second plurality of circuit breakers is communicatively connected to each other via a link line, and when any circuit breaker included in the second plurality of circuit breakers receives a signal from the modulation detector , transmitting a signal via the connecting line to other circuit breakers included in the second plurality of circuit breakers;
  • the power supply system switching device according to any one of items 1 to 3.
  • a power supply system switching method executed by a power supply system switching device for switching a power supply system from a power supply, a step of interrupting the current in the first system and canceling the interruption of the current in the second system; modulating and emitting incident light based on an applied voltage proportional to the detected current; detecting the modulation of the incident light; upon detection of modulation, interrupting the current in the first system and unblocking the current in the second system; Power supply system switching method.
  • power supply system switching device 10 power supply device 20 load device 30 semiconductor circuit breaker 31 control circuit 32 IGBT 33 voltage suppression circuit 34 current sensor 35 control line 40 power cable 41 fault point 42 link line 43 polarization maintaining fiber 50 optical modulator 51 polarizer 52 electro-optic crystal 60 modulation detector 61 half mirror 62 analyzer 63 O/E conversion device 70 light source 80 light receiving unit 90 circuit breaker

Abstract

This power supply system switching device for switching a power supply system from a power supply apparatus, comprising: a plurality of first circuit breakers that interrupt current in a first system and cancel interruption of current in a second system; an optical modulator that modulates incident light and emits the modulated light on the basis of a voltage applied in proportion to the current detected by the plurality of first circuit breakers; a modulation detector that detects the modulation of incident light from the optical modulator; and a plurality of second circuit breakers that, when the modulation detector detects the modulation, interrupt the current in the first system and cancel the interruption of current in the second system.

Description

給電系統切替装置および給電系統切替方法POWER SUPPLY SWITCHING DEVICE AND POWER SUPPLY SWITCHING METHOD
　本発明は、給電系統切替装置および給電系統切替方法に関する。 The present invention relates to a power supply system switching device and a power supply system switching method.
　給電システムにおいて短絡事故が発生した場合、自動的に回路を遮断する配線用遮断器により、事故点を即座に切り離すことが一般的であり、短絡の検出から切り離しまでを短時間で実現することで、事故を最小限に抑えることができる。さらに、装置への給電系統を複数準備しておき、短絡等の事故によってある系統が遮断された場合でも、他の系統に切り替えることで、装置への給電の停止による影響も抑えることができる。 When a short-circuit fault occurs in a power supply system, it is common to immediately isolate the point of fault by means of a circuit breaker that automatically breaks the circuit. , accidents can be minimized. Furthermore, by preparing a plurality of power supply systems to the device, even if one system is cut off due to an accident such as a short circuit, switching to another system can reduce the impact of power supply interruption to the device.
　また、遮断動作が早い遮断器を用いる技術が知られている。例えば、特許文献１には、遮断動作が早い半導体遮断器を用いて切り替えを行う直流遮断装置が開示されている。 There is also a known technique that uses a circuit breaker with a fast breaking operation. For example, Patent Literature 1 discloses a direct-current circuit breaker that performs switching using a semiconductor circuit breaker that cuts off quickly.
特開２０１５－０１１９３３号公報JP 2015-011933 A
　しかし、従来の技術では、系統の切り替えには複数の遮断器を開閉する制御が必要となり、遮断自体の動作は早くても、複数の遮断器の動作を制御し、系統を切り替えるためには時間的なロスが発生して瞬時電圧低下が発生するという問題がある。 However, with the conventional technology, it is necessary to control the opening and closing of multiple circuit breakers for system switching. There is a problem that an instantaneous voltage drop occurs due to the occurrence of a significant loss.
　開示の技術は、複数の遮断器の動作を制御するための時間的なロスを抑制することを目的とする。 The disclosed technology aims to suppress time loss for controlling the operation of multiple circuit breakers.
　開示の技術は、電源装置からの給電系統を切り替えるための給電系統切替装置であって、第一の系統の電流を遮断して、第二の系統の電流の遮断を解除する第一の複数の遮断器と、前記第一の複数の遮断器が検出した電流に比例して印加される電圧に基づいて、入射された光を変調して出射する光変調器と、前記光変調器から入射した光の変調を検出する変調検出器と、前記変調検出器が変調を検出すると、前記第一の系統の電流を遮断して前記第二の系統の電流の遮断を解除する第二の複数の遮断器と、を備える給電系統切替装置である。 The disclosed technology is a power supply system switching device for switching a power supply system from a power supply device, and includes a first plurality of first power supply systems that interrupt current in a first system and cancel current interruption in a second system. a circuit breaker, an optical modulator that modulates and emits incident light based on a voltage that is applied in proportion to the current detected by the first plurality of circuit breakers; a modulation detector for detecting modulation of light; and a second plurality of interruptions for interrupting the current in the first system and unblocking the current in the second system when the modulation detector detects modulation. and a power supply system switching device.
　複数の遮断器の動作を制御するための時間的なロスを抑制することができる。 　The time loss for controlling the operation of multiple circuit breakers can be suppressed.
従来の給電系統切替装置の構成の一例を示す第一の図である。1 is a first diagram showing an example of a configuration of a conventional power supply system switching device; FIG. 従来の給電系統切替装置の構成の一例を示す第二の図である。FIG. 10 is a second diagram showing an example of the configuration of a conventional power supply system switching device; 本発明の実施の形態に係る給電系統切替装置の構成の一例を示す図である。It is a figure showing an example of composition of a feed system switching device concerning an embodiment of the invention. 半導体遮断器の構成の一例を示す図である。It is a figure which shows an example of a structure of a semiconductor circuit breaker. 本発明の実施の形態に係る給電系統切替装置の動作の一例を示す第一の図である。FIG. 4 is a first diagram showing an example of the operation of the power supply system switching device according to the embodiment of the present invention; 本発明の実施の形態に係る給電系統切替装置の動作の一例を示す第二の図である。FIG. 5 is a second diagram showing an example of the operation of the power supply system switching device according to the embodiment of the present invention;
　以下、図面を参照して本発明の実施の形態（本実施の形態）を説明する。以下で説明する実施の形態は一例に過ぎず、本発明が適用される実施の形態は、以下の実施の形態に限られるわけではない。本実施の形態に係る技術を説明する前に、まずは、本実施の形態に関連する従来技術とその課題を説明する。 An embodiment (this embodiment) of the present invention will be described below with reference to the drawings. The embodiments described below are merely examples, and embodiments to which the present invention is applied are not limited to the following embodiments. Prior to explaining the technology according to this embodiment, first, the conventional technology and its problems related to this embodiment will be explained.
　（従来技術について）
　図１は、従来の給電系統切替装置の構成の一例を示す第一の図である。従来の給電系統切替装置は、複数の遮断器９０ａ、９０ｂ、９０ｃおよび９０ｄから構成される。なお、図１に示されるように、給電系統切替装置が正極側の電源ケーブル４０ａのみに遮断器を備える構成となっているが、負極側の電源ケーブル４０ｂにも同様の遮断器を備えていても良い。 (Regarding conventional technology)
FIG. 1 is a first diagram showing an example of the configuration of a conventional power supply system switching device. A conventional feed system switching device is composed of a plurality of circuit breakers 90a, 90b, 90c and 90d. As shown in FIG. 1, the power supply system switching device is configured to include a circuit breaker only in the power cable 40a on the positive electrode side, but the power cable 40b on the negative electrode side is also equipped with a similar circuit breaker. Also good.
　電源装置１０から負荷装置２０に供給される直流電力は、系統１と系統２の２つの系統によって供給される。通常時は、系統１によって電力が供給され、系統１で短絡等の事故が発生した場合に、系統２に切り替えられる。 The DC power supplied from the power supply device 10 to the load device 20 is supplied by two systems, system 1 and system 2 . Normally, power is supplied from system 1, and when an accident such as a short circuit occurs in system 1, it is switched to system 2.
　具体的には、事故点４１において短絡等の事故が発生し、遮断器９０ａで事故の発生を検出すると、遮断器９０ａを開放し、遮断器９０ｂを閉鎖する。なお、開放は、電流を遮断する動作であり、閉鎖は電流の遮断を解除する動作である。続いて、遮断器９０ｃを開放し、遮断器９０ｄを閉鎖する。 Specifically, when an accident such as a short circuit occurs at the accident point 41 and the circuit breaker 90a detects the occurrence of the accident, the circuit breaker 90a is opened and the circuit breaker 90b is closed. Note that opening is an operation of interrupting current, and closing is an operation of canceling the interruption of current. Subsequently, the circuit breaker 90c is opened and the circuit breaker 90d is closed.
　このとき、遮断器の動作に時間がかかり、瞬時電圧低下が発生し、負荷装置２０の停止等の誤動作が発生する可能性があった。 At this time, it may take time for the circuit breaker to operate, an instantaneous voltage drop may occur, and a malfunction such as a stop of the load device 20 may occur.
　図２は、従来の給電系統切替装置の構成の一例を示す第二の図である。図２に示される給電系統切替装置は、複数の半導体遮断器３０ａ、３０ｂ、３０ｃおよび３０ｄを備える。半導体遮断器の場合、単体での遮断速度は速くなるが、事故の発生を検出した半導体遮断器３０ａが短絡電流を検出し、短絡電流を検出したことを電気信号（または光信号）に変換し、電気信号を半導体遮断器３０ｃおよび３０ｄまで送信し、半導体遮断器３０ｃおよび３０ｄが当該電気信号（または光信号）を受信し、受信した信号が半導体遮断器３０ａにおいて短絡電流を検出したことを分析し、半導体遮断器３０ｃおよび３０ｄを動作させるなど、切替指示のための信号の変換および送受信に時間が掛かる場合があるため、時間的なロスの抑制が十分ではない。 FIG. 2 is a second diagram showing an example of the configuration of a conventional power supply system switching device. The feed system switching device shown in FIG. 2 includes a plurality of semiconductor circuit breakers 30a, 30b, 30c and 30d. In the case of a semiconductor circuit breaker, the breaking speed by itself is faster, but the semiconductor circuit breaker 30a that detects the occurrence of an accident detects a short-circuit current and converts the detection of the short-circuit current into an electrical signal (or optical signal). , send electrical signals to semiconductor circuit breakers 30c and 30d, semiconductor circuit breakers 30c and 30d receive the electrical signals (or optical signals), and analyze that the received signals detect short-circuit current in semiconductor circuit breaker 30a However, it may take time to convert and transmit/receive the signal for the switching instruction, such as operating the semiconductor circuit breakers 30c and 30d.
　図３は、本実施の形態に係る給電系統切替装置の構成の一例を示す図である。本実施の形態に係る給電系統切替装置１は、図２と同様の半導体遮断器３０ａ、３０ｂ、３０ｃおよび３０ｄを備え、さらに、光変調器５０と、変調検出器６０と、を備える。 FIG. 3 is a diagram showing an example of the configuration of the power supply system switching device according to this embodiment. The power supply system switching device 1 according to the present embodiment includes semiconductor breakers 30a, 30b, 30c and 30d similar to those in FIG. 2, and further includes an optical modulator 50 and a modulation detector 60.
　光変調器５０は、半導体遮断器３０ａまたは半導体遮断器３０ｂで事故の発生が検出されると、光源７０から受光部８０に向けて発した光を変調させる。 The optical modulator 50 modulates the light emitted from the light source 70 toward the light receiving section 80 when the occurrence of an accident is detected by the semiconductor circuit breaker 30a or the semiconductor circuit breaker 30b.
　変調検出器６０は、光源７０から受光部８０に向けて発した光の変調を検出する。半導体遮断器３０ｃおよび半導体遮断器３０ｄは、変調検出器６０が変調を検出すると、開放と閉鎖とを切り替える。 The modulation detector 60 detects modulation of light emitted from the light source 70 toward the light receiving section 80 . Semiconductor circuit breaker 30c and semiconductor circuit breaker 30d switch between opening and closing when modulation detector 60 detects modulation.
　図４は、半導体遮断器の構成の一例を示す図である。図４に示す半導体遮断器３０は、半導体遮断器３０ａ、３０ｂ、３０ｃおよび３０ｄに共通する構成である。 FIG. 4 is a diagram showing an example of the configuration of a semiconductor circuit breaker. The semiconductor circuit breaker 30 shown in FIG. 4 has a configuration common to the semiconductor circuit breakers 30a, 30b, 30c and 30d.
　半導体遮断器３０は、制御回路３１と、ＩＧＢＴ（Insulated Gate Bipolar Transistor）３２と、電圧抑制回路３３と、電流センサ３４と、を備える。 The semiconductor circuit breaker 30 includes a control circuit 31, an IGBT (Insulated Gate Bipolar Transistor) 32, a voltage suppression circuit 33, and a current sensor 34.
　制御回路３１は、制御線３５を介して、ＩＧＢＴ３２の開放および閉鎖を制御する。なお、図４では電源内蔵型としているが、図示しない電源から電力の供給を受けても良い。 The control circuit 31 controls the opening and closing of the IGBT 32 via the control line 35. Although FIG. 4 shows a built-in power supply type, power may be supplied from a power supply (not shown).
　ＩＧＢＴ３２は、絶縁ゲートバイポーラトランジスタであって、制御回路３１の制御を受けて、正極側の電源ケーブル４０ａに流れる電流を遮断するか、電流の遮断を解除する。 The IGBT 32 is an insulated gate bipolar transistor, and is controlled by the control circuit 31 to cut off the current flowing through the power cable 40a on the positive electrode side or cancel the cutoff of the current.
　電圧抑制回路３３は、コンデンサまたはダイオード等であって、正極側の電源ケーブル４０ａと負極側の電源ケーブル４０ｂとの間に発生する電圧の上昇を抑制する回路である。ＩＧＢＴ３２の両端に接続された２つの電圧抑制回路３３によって、電流の遮断による電圧の急激な上昇を回避することができる。 The voltage suppression circuit 33 is a capacitor, a diode, or the like, and is a circuit that suppresses a rise in voltage generated between the power cable 40a on the positive electrode side and the power cable 40b on the negative electrode side. The two voltage suppression circuits 33 connected to both ends of the IGBT 32 can avoid a sudden rise in voltage due to current interruption.
　電流センサ３４は、電源ケーブル４０ａに流れる電流値を計測し、制御回路３１に電流値を示す信号を送信する。これによって、制御回路３１は、短絡電流の発生を検出する。 The current sensor 34 measures the value of the current flowing through the power cable 40a and transmits a signal indicating the current value to the control circuit 31. Thereby, the control circuit 31 detects the occurrence of the short-circuit current.
　なお、負極側に半導体遮断器を設置する場合には、図４の電源ケーブル４０ａを負極側、電源ケーブル４０ｂを正極側に読み替えた構成とすれば良い。 When a semiconductor circuit breaker is installed on the negative electrode side, the power cable 40a in FIG. 4 may be read as the negative electrode side and the power cable 40b as the positive electrode side.
　図５は、本発明の実施の形態に係る給電系統切替装置の動作の一例を示す第一の図である。 FIG. 5 is a first diagram showing an example of the operation of the power supply system switching device according to the embodiment of the present invention.
　まず、光変調器５０および変調検出器６０の構成について説明する。光変調器５０は、偏光子５１と、電気光学結晶５２ａ，５２ｂと、を備える。偏光子５１は、光源７０から入射した光を一定の方向に偏光させる。電気光学結晶５２ａ，５２ｂは、電圧の印加によって光の偏光方向を変えるための素子である。 First, the configurations of the optical modulator 50 and the modulation detector 60 will be described. The optical modulator 50 includes a polarizer 51 and electro- optic crystals 52a and 52b. The polarizer 51 polarizes the light incident from the light source 70 in a certain direction. The electro- optic crystals 52a and 52b are elements for changing the polarization direction of light by applying a voltage.
　変調検出器６０は、ハーフミラー６１ｃ，６１ｄと、検光子６２ｃ，６２ｄと、Ｏ／Ｅ変換器６３ｃ，６３ｄと、を備える。ハーフミラー６１ｃ，６１ｄは、入射する光の一部を検光子６２ｃ，６２ｄに向けて反射し、一部を透過する鏡である。検光子６２ｃ，６２ｄは、偏光の有無や偏光面の方向を検出するための素子である。Ｏ／Ｅ変換器６３ｃ，６３ｄは、光信号を電気信号に変換する機器である。 The modulation detector 60 includes half mirrors 61c, 61d, analyzers 62c, 62d, and O/ E converters 63c, 63d. The half mirrors 61c and 61d are mirrors that reflect part of the incident light toward the analyzers 62c and 62d and transmit part of the light. The analyzers 62c and 62d are elements for detecting the presence or absence of polarized light and the direction of the plane of polarization. The O/ E converters 63c and 63d are devices that convert optical signals into electrical signals.
　また、半導体遮断器３０ａおよび半導体遮断器３０ｂの間と、半導体遮断器３０ｃおよび半導体遮断器３０ｄの間は、連携線４２を介して通信可能に接続されている。また、光変調器５０と変調検出器６０の間は、偏波面保持ファイバ４３によって接続されている。 Also, the semiconductor circuit breaker 30a and the semiconductor circuit breaker 30b and the semiconductor circuit breaker 30c and the semiconductor circuit breaker 30d are connected via a link line 42 so as to be communicable. Also, the optical modulator 50 and the modulation detector 60 are connected by a polarization maintaining fiber 43 .
　次に、給電系統切替装置１の動作について説明する。系統１での電力の供給が行われている場合に、半導体遮断器３０ａと半導体遮断器３０ｃの間の事故点で短絡が発生し（ステップＳ１１）、半導体遮断器３０ａが短絡を検出する（ステップＳ１２）。 Next, the operation of the power supply system switching device 1 will be described. When power is being supplied in system 1, a short circuit occurs at the fault point between semiconductor circuit breaker 30a and semiconductor circuit breaker 30c (step S11), and semiconductor circuit breaker 30a detects the short circuit (step S12).
　半導体遮断器３０ａは、制御回路３１によってＩＧＢＴ３２を制御し、系統１の電流を遮断し（ステップＳ１３）、あわせて連携線４２を介して半導体遮断器３０ｂに信号を送信する（ステップＳ１４）。信号を受信した半導体遮断器３０ｂは、系統２の電流の遮断を解除する。これにより、瞬時に、半導体遮断器３０ａおよび半導体遮断器３０ｂの切り替え動作が行われる。 The semiconductor circuit breaker 30a controls the IGBT 32 by the control circuit 31 to cut off the current in the system 1 (step S13), and also transmits a signal to the semiconductor circuit breaker 30b via the link line 42 (step S14). Semiconductor circuit breaker 30 b that has received the signal cancels the cutoff of the current in system 2 . As a result, the switching operation of the semiconductor circuit breaker 30a and the semiconductor circuit breaker 30b is instantaneously performed.
　続いて、半導体遮断器３０ａが系統１の電流を遮断すると、その瞬間に電圧Ｖ１が電気光学結晶５２ａに印加され（ステップＳ１５）、光源７０から入射した直線偏光波の偏光面が例えば＋４５度回転する（ステップＳ１６）。 Subsequently, when the semiconductor circuit breaker 30a cuts off the current in the system 1, the voltage V1 is applied to the electro-optic crystal 52a at that moment (step S15), and the plane of polarization of the linearly polarized wave incident from the light source 70 is changed to +45 degrees, for example. Rotate (step S16).
　光変調器５０を出射した光は、偏波面保持ファイバ４３を介して変調検出器６０に入射する。偏光面の＋４５度回転した光である場合、ハーフミラー６１ｃを反射して、検光子６２ｃに入射する。検光子６２ｃが入射された光を検出すると、Ｏ／Ｅ変換器６３ｃは、光信号を電気信号に変換する（ステップＳ１７）。 The light emitted from the optical modulator 50 enters the modulation detector 60 via the polarization maintaining fiber 43 . In the case of light whose plane of polarization has been rotated by +45 degrees, it is reflected by the half mirror 61c and enters the analyzer 62c. When the analyzer 62c detects the incident light, the O/E converter 63c converts the optical signal into an electrical signal (step S17).
　半導体遮断器３０ｃは、変換された電気信号を受けて、制御回路３１によってＩＧＢＴ３２を制御し、系統１の電流を遮断し（ステップＳ１８）、あわせて連携線４２を介して半導体遮断器３０ｄに信号を送信する（ステップＳ１９）。信号を受信した半導体遮断器３０ｄは、系統２の電流の遮断を解除する。これにより、瞬時に、半導体遮断器３０ｃおよび半導体遮断器３０ｄの切り替え動作が行われ、系統１（第一の給電系統の一例）から系統２（第二の給電系統の一例）への切り替えが完了する。 The semiconductor circuit breaker 30c receives the converted electric signal, controls the IGBT 32 by the control circuit 31, cuts off the current in the system 1 (step S18), and simultaneously transmits the signal to the semiconductor circuit breaker 30d via the link line 42. is transmitted (step S19). Semiconductor circuit breaker 30 d that has received the signal releases the cutoff of the current in system 2 . As a result, the switching operation of the semiconductor circuit breaker 30c and the semiconductor circuit breaker 30d is instantaneously performed, and the switching from the system 1 (an example of the first power supply system) to the system 2 (an example of the second power supply system) is completed. do.
　図６は、本発明の実施の形態に係る給電系統切替装置の動作の一例を示す第二の図である。系統２での電力の供給が行われている場合に、半導体遮断器３０ｂと半導体遮断器３０ｄの間の事故点で短絡が発生し（ステップＳ２１）、半導体遮断器３０ｂが短絡を検出する（ステップＳ２２）。 FIG. 6 is a second diagram showing an example of the operation of the power supply system switching device according to the embodiment of the present invention. When power is being supplied in system 2, a short circuit occurs at the fault point between semiconductor circuit breaker 30b and semiconductor circuit breaker 30d (step S21), and semiconductor circuit breaker 30b detects the short circuit (step S22).
　半導体遮断器３０ｂは、制御回路３１によってＩＧＢＴ３２を制御し、系統２の電流を遮断し（ステップＳ２３）、あわせて連携線４２を介して半導体遮断器３０ａに信号を送信する（ステップＳ２４）。信号を受信した半導体遮断器３０ａは、系統１の電流の遮断を解除する。これにより、瞬時に、半導体遮断器３０ａおよび半導体遮断器３０ｂの切り替え動作が行われる。 The semiconductor circuit breaker 30b controls the IGBT 32 by the control circuit 31 to cut off the current in the system 2 (step S23), and also transmits a signal to the semiconductor circuit breaker 30a via the link line 42 (step S24). Upon receiving the signal, the semiconductor circuit breaker 30a cancels the interruption of the current in the system 1. As a result, the switching operation of the semiconductor circuit breaker 30a and the semiconductor circuit breaker 30b is instantaneously performed.
　続いて、半導体遮断器３０ｂが系統２の電流を遮断すると、その瞬間に電圧Ｖ２が電気光学結晶５２ｂに印加され（ステップＳ２５）、光源７０から入射した直線偏光波の偏光面が例えば－４５度回転する（ステップＳ２６）。 Subsequently, when the semiconductor circuit breaker 30b cuts off the current in the system 2, the voltage V2 is applied to the electro-optic crystal 52b at that instant (step S25), and the plane of polarization of the linearly polarized wave incident from the light source 70 is changed to -45, for example. Rotate by degrees (step S26).
　光変調器５０を出射した光は、偏波面保持ファイバ４３を介して変調検出器６０に入射する。偏光面の－４５度回転した光である場合、ハーフミラー６１ｄを反射して、検光子６２ｄに入射する。検光子６２ｄが入射された光を検出すると、Ｏ／Ｅ変換器６３ｄは、光信号を電気信号に変換する（ステップＳ２７）。 The light emitted from the optical modulator 50 enters the modulation detector 60 via the polarization maintaining fiber 43 . If the light has its plane of polarization rotated by -45 degrees, it is reflected by the half mirror 61d and enters the analyzer 62d. When the analyzer 62d detects the incident light, the O/E converter 63d converts the optical signal into an electrical signal (step S27).
　半導体遮断器３０ｄは、変換された電気信号を受けて、制御回路３１によってＩＧＢＴ３２を制御し、系統２の電流を遮断し（ステップＳ２８）、あわせて連携線４２を介して半導体遮断器３０ｃに信号を送信する（ステップＳ２９）。信号を受信した半導体遮断器３０ｃは、系統１の電流の遮断を解除する。これにより、瞬時に、半導体遮断器３０ｃおよび半導体遮断器３０ｄの切り替え動作が行われ、系統２（第一の給電系統の一例）から系統１（第二の給電系統の一例）への切り替えが完了する。 The semiconductor circuit breaker 30d receives the converted electrical signal, controls the IGBT 32 by the control circuit 31, cuts off the current in the system 2 (step S28), and simultaneously transmits the signal to the semiconductor circuit breaker 30c via the link line 42. is transmitted (step S29). The semiconductor circuit breaker 30c that has received the signal cancels the interruption of the current in the system 1. As a result, the switching operation of the semiconductor circuit breaker 30c and the semiconductor circuit breaker 30d is instantaneously performed, and the switching from the system 2 (an example of the first power supply system) to the system 1 (an example of the second power supply system) is completed. do.
　本実施の形態に係る給電系統切替装置１によれば、第一の複数の遮断器（半導体遮断器３０ａ，３０ｂ）に接続された光変調器５０によって変調された光を、第二の複数の遮断器（半導体遮断器３０ｃ，３０ｄ）に接続された変調検出器６０が検出する。これによって、第一の複数の遮断器（半導体遮断器３０ａ，３０ｂ）から第二の複数の遮断器（半導体遮断器３０ｃ，３０ｄ）への情報の伝達において、第一の複数の遮断器が短絡電流を検出すると同時に光が変調されることによって、第一の複数の遮断器において短絡電流を検出したという情報を電気信号（あるいは光信号）に変換することなく（通信用のプロトコルを使うことなく）、光が変調されているか否かで第二の複数の遮断器に伝達できるため、従来手法である短絡電流を検出したという情報を電気信号（あるいは光信号）に変換し、当該電気信号を例えばＩＰネットワークで送信できるように変換し、当該信号の受信側で遮断器を制御する信号に変換するなどの時間的なロスを抑制することができる。これにより、複数の電力供給の系統を瞬時に切り替えることができる。 According to the power supply system switching device 1 according to the present embodiment, the light modulated by the optical modulator 50 connected to the first plurality of circuit breakers ( semiconductor circuit breakers 30a and 30b) is converted to the second plurality of circuit breakers. A modulation detector 60 connected to the circuit breakers ( semiconductor circuit breakers 30c and 30d) detects. Thereby, in the transmission of information from the first plurality of circuit breakers ( semiconductor circuit breakers 30a, 30b) to the second plurality of circuit breakers ( semiconductor circuit breakers 30c, 30d), the first plurality of circuit breakers are short-circuited. By modulating the light at the same time as the current is detected, the information that the short-circuit current is detected in the first plurality of circuit breakers is not converted into an electrical signal (or an optical signal) (without using a communication protocol). ), since it can be transmitted to the second plurality of circuit breakers depending on whether or not the light is modulated, the information that the short circuit current is detected in the conventional method is converted into an electric signal (or an optical signal), and the electric signal is For example, the time loss can be suppressed by converting the signal so that it can be transmitted over an IP network and converting it into a signal for controlling a circuit breaker on the receiving side of the signal. Thus, it is possible to instantaneously switch between a plurality of power supply systems.
　上述した電圧Ｖ１および電圧Ｖ２は、電流センサ３４が電流を検出した際に発生させる電圧値でも良く、電流センサ３４が発生させた電圧値を昇圧または降圧させた電圧値でも良い。 The voltage V1 and the voltage V2 described above may be voltage values generated when the current sensor 34 detects current, or may be voltage values obtained by stepping up or stepping down the voltage value generated by the current sensor 34 .
　本実施の形態に示した光変調器５０および変調検出器６０の構成は一例であって、電圧により光を変調する光変調技術と、変調された光を検出する変調検出技術であれば、他でも良い。 The configuration of the optical modulator 50 and the modulation detector 60 shown in the present embodiment is an example, and an optical modulation technology that modulates light with a voltage and a modulation detection technology that detects the modulated light can be used. But it's okay.
　半導体遮断器３０ａ、３０ｂ、３０ｃ、３０ｄは、遮断器の一例である。遮断器は、電子的なスイッチや電気制御可能なブレーカなどであっても良い。 The semiconductor circuit breakers 30a, 30b, 30c, and 30d are examples of circuit breakers. The circuit breaker may be an electronic switch, an electrically controllable breaker, or the like.
　（実施の形態のまとめ）
　本明細書には、少なくとも下記の各項に記載した給電系統切替装置および給電系統切替方法が記載されている。
（第１項）
　電源装置からの給電系統を切り替えるための給電系統切替装置であって、
　第一の系統の電流を遮断して、第二の系統の電流の遮断を解除する第一の複数の遮断器と、
　前記第一の複数の遮断器が検出した電流に比例して印加される電圧に基づいて、入射された光を変調して出射する光変調器と、
　前記光変調器から入射した光の変調を検出する変調検出器と、
　前記変調検出器が変調を検出すると、前記第一の系統の電流を遮断して前記第二の系統の電流の遮断を解除する第二の複数の遮断器と、を備える、
　給電系統切替装置。
（第２項）
　前記第一の複数の遮断器のそれぞれは、制御回路と、ＩＧＢＴと、電流センサと、を備え、
　前記制御回路は、前記電流センサによって短絡電流の発生を検出すると、前記ＩＧＢＴを制御して、前記第一の系統の電流を遮断させる。 (Summary of embodiment)
This specification describes at least a power supply system switching device and a power supply system switching method described in each of the following items.
(Section 1)
A power supply system switching device for switching a power supply system from a power supply,
a plurality of first circuit breakers that interrupt the current in the first system and cancel the interruption of the current in the second system;
an optical modulator that modulates and emits incident light based on a voltage that is applied in proportion to the current detected by the first plurality of circuit breakers;
a modulation detector for detecting modulation of light incident from the optical modulator;
a second plurality of circuit breakers that, when the modulation detector detects modulation, interrupts current in the first system and unblocks current in the second system;
Power supply system switching device.
(Section 2)
each of the first plurality of circuit breakers includes a control circuit, an IGBT, and a current sensor;
When the current sensor detects the occurrence of a short-circuit current, the control circuit controls the IGBT to cut off the current in the first system.
　第１項に記載の給電系統切替装置。
（第３項）
　前記第一の複数の遮断器のそれぞれは、連携線を介して互いに通信可能に接続され、前記第一の複数の遮断器に含まれるいずれかの遮断器が電流を検出すると、前記第一の複数の遮断器に含まれる他の遮断器に前記連携線を介して信号を送信する、
　第１項または第２項に記載の給電系統切替装置。
（第４項）
　前記第二の複数の遮断器のそれぞれは、連携線を介して互いに通信可能に接続され、前記第二の複数の遮断器に含まれるいずれかの遮断器が前記変調検出器から信号を受信すると、前記第二の複数の遮断器に含まれる他の遮断器に前記連携線を介して信号を送信する、
　第１項から第３項のいずれか１項に記載の給電系統切替装置。
（第５項）
　電源装置からの給電系統を切り替えるための給電系統切替装置が実行する給電系統切替方法であって、
　第一の系統の電流を遮断して、第二の系統の電流の遮断を解除するステップと、
　検出した電流に比例して印加される電圧に基づいて、入射された光を変調して出射するステップと、
　入射した光の変調を検出するステップと、
　変調を検出すると、前記第一の系統の電流を遮断して前記第二の系統の電流の遮断を解除するステップと、を備える、
　給電系統切替方法。 The power supply system switching device according to claim 1.
(Section 3)
Each of the first plurality of circuit breakers is communicably connected to each other via a link line, and when any one of the circuit breakers included in the first plurality of circuit breakers detects a current, the first circuit breaker Sending a signal via the link line to other circuit breakers included in the plurality of circuit breakers,
3. The feed system switching device according to claim 1 or 2.
(Section 4)
Each of the second plurality of circuit breakers is communicatively connected to each other via a link line, and when any circuit breaker included in the second plurality of circuit breakers receives a signal from the modulation detector , transmitting a signal via the connecting line to other circuit breakers included in the second plurality of circuit breakers;
The power supply system switching device according to any one of items 1 to 3.
(Section 5)
A power supply system switching method executed by a power supply system switching device for switching a power supply system from a power supply,
a step of interrupting the current in the first system and canceling the interruption of the current in the second system;
modulating and emitting incident light based on an applied voltage proportional to the detected current;
detecting the modulation of the incident light;
upon detection of modulation, interrupting the current in the first system and unblocking the current in the second system;
Power supply system switching method.
　以上、本実施の形態について説明したが、本発明はかかる特定の実施形態に限定されるものではなく、請求の範囲に記載された本発明の要旨の範囲内において、種々の変形・変更が可能である。 Although the present embodiment has been described above, the present invention is not limited to such a specific embodiment, and various modifications and changes are possible within the scope of the gist of the present invention described in the claims. is.
１　給電系統切替装置
１０　電源装置
２０　負荷装置
３０　半導体遮断器
３１　制御回路
３２　ＩＧＢＴ
３３　電圧抑制回路
３４　電流センサ
３５　制御線
４０　電源ケーブル
４１　事故点
４２　連携線
４３　偏波面保持ファイバ
５０　光変調器
５１　偏光子
５２　電気光学結晶
６０　変調検出器
６１　ハーフミラー
６２　検光子
６３　Ｏ／Ｅ変換器
７０　光源
８０　受光部
９０　遮断器 1 power supply system switching device 10 power supply device 20 load device 30 semiconductor circuit breaker 31 control circuit 32 IGBT
33 voltage suppression circuit 34 current sensor 35 control line 40 power cable 41 fault point 42 link line 43 polarization maintaining fiber 50 optical modulator 51 polarizer 52 electro-optic crystal 60 modulation detector 61 half mirror 62 analyzer 63 O/E conversion device 70 light source 80 light receiving unit 90 circuit breaker

Claims (5)

  1. 　電源装置からの給電系統を切り替えるための給電系統切替装置であって、
    　第一の系統の電流を遮断して、第二の系統の電流の遮断を解除する第一の複数の遮断器と、
    　前記第一の複数の遮断器が検出した電流に比例して印加される電圧に基づいて、入射された光を変調して出射する光変調器と、
    　前記光変調器から入射した光の変調を検出する変調検出器と、
    　前記変調検出器が変調を検出すると、前記第一の系統の電流を遮断して前記第二の系統の電流の遮断を解除する第二の複数の遮断器と、を備える、
    　給電系統切替装置。     A power supply system switching device for switching a power supply system from a power supply,
    a plurality of first circuit breakers that interrupt the current in the first system and cancel the interruption of the current in the second system;
    an optical modulator that modulates and emits incident light based on a voltage that is applied in proportion to the current detected by the first plurality of circuit breakers;
    a modulation detector for detecting modulation of light incident from the optical modulator;
    a second plurality of circuit breakers that, when the modulation detector detects modulation, interrupts current in the first system and unblocks current in the second system;
    Power supply system switching device.
  2. 　前記第一の複数の遮断器のそれぞれは、制御回路と、ＩＧＢＴと、電流センサと、を備え、
    　前記制御回路は、前記電流センサによって短絡電流の発生を検出すると、前記ＩＧＢＴを制御して、前記第一の系統の電流を遮断させる。
    　請求項１に記載の給電系統切替装置。     each of the first plurality of circuit breakers includes a control circuit, an IGBT, and a current sensor;
    When the current sensor detects the occurrence of a short-circuit current, the control circuit controls the IGBT to cut off the current in the first system.
    The power supply system switching device according to claim 1.
  3. 　前記第一の複数の遮断器のそれぞれは、連携線を介して互いに通信可能に接続され、前記第一の複数の遮断器に含まれるいずれかの遮断器が電流を検出すると、前記第一の複数の遮断器に含まれる他の遮断器に前記連携線を介して信号を送信する、
    　請求項１または２に記載の給電系統切替装置。     Each of the first plurality of circuit breakers is communicably connected to each other via a link line, and when any one of the circuit breakers included in the first plurality of circuit breakers detects a current, the first circuit breaker Sending a signal via the link line to other circuit breakers included in the plurality of circuit breakers,
    The power supply system switching device according to claim 1 or 2.
  4. 　前記第二の複数の遮断器のそれぞれは、連携線を介して互いに通信可能に接続され、前記第二の複数の遮断器に含まれるいずれかの遮断器が前記変調検出器から信号を受信すると、前記第二の複数の遮断器に含まれる他の遮断器に前記連携線を介して信号を送信する、
    　請求項１から３のいずれか１項に記載の給電系統切替装置。     Each of the second plurality of circuit breakers is communicatively connected to each other via a link line, and when any circuit breaker included in the second plurality of circuit breakers receives a signal from the modulation detector , transmitting a signal via the connecting line to other circuit breakers included in the second plurality of circuit breakers;
    The power supply system switching device according to any one of claims 1 to 3.
  5. 　電源装置からの給電系統を切り替えるための給電系統切替装置が実行する給電系統切替方法であって、
    　第一の系統の電流を遮断して、第二の系統の電流の遮断を解除するステップと、
    　検出した電流に比例して印加される電圧に基づいて、入射された光を変調して出射するステップと、
    　入射した光の変調を検出するステップと、
    　変調を検出すると、前記第一の系統の電流を遮断して前記第二の系統の電流の遮断を解除するステップと、を備える、
    　給電系統切替方法。     A power supply system switching method executed by a power supply system switching device for switching a power supply system from a power supply,
    a step of interrupting the current in the first system and canceling the interruption of the current in the second system;
    modulating and emitting incident light based on an applied voltage proportional to the detected current;
    detecting the modulation of the incident light;
    upon detection of modulation, interrupting the current in the first system and unblocking the current in the second system;
    Power supply system switching method.
PCT/JP2021/020088 2021-05-26 2021-05-26 Power supply system switching device and power supply system switching method WO2022249366A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS648828A (en) * 1987-07-01 1989-01-12 Hitachi Ltd Operating method for dc transmission system
JPH0865877A (en) * 1994-08-18 1996-03-08 Ngk Insulators Ltd Protection relay device with magneto-optical sensor
JP2015164374A (en) * 2014-02-28 2015-09-10 株式会社Ｎｔｔファシリティーズ Power supply system, power supply control apparatus, and power supply control method and program in power supply system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS648828A (en) * 1987-07-01 1989-01-12 Hitachi Ltd Operating method for dc transmission system
JPH0865877A (en) * 1994-08-18 1996-03-08 Ngk Insulators Ltd Protection relay device with magneto-optical sensor
JP2015164374A (en) * 2014-02-28 2015-09-10 株式会社Ｎｔｔファシリティーズ Power supply system, power supply control apparatus, and power supply control method and program in power supply system

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