JP2008259396A - Distribution board - Google Patents

Distribution board Download PDF

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JP2008259396A
JP2008259396A JP2007243908A JP2007243908A JP2008259396A JP 2008259396 A JP2008259396 A JP 2008259396A JP 2007243908 A JP2007243908 A JP 2007243908A JP 2007243908 A JP2007243908 A JP 2007243908A JP 2008259396 A JP2008259396 A JP 2008259396A
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Prior art keywords
breaker
unit
communication
distribution board
branch
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JP2007243908A
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JP5016424B2 (en
Inventor
Tomoyuki Sawada
知行 澤田
Tsunehiro Kitamura
常弘 北村
Tomohide Furuya
智英 古屋
Masataka Kanda
雅隆 神田
Masateru Ishibashi
誠輝 石橋
Hirotada Higashihama
弘忠 東浜
Shinji Yamamoto
心司 山本
Kenji Kuniyoshi
賢治 國吉
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/16Electric power substations
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/121Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission

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  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Distribution Board (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To reduce time and labor required for wiring work of communication lines between breakers and a monitoring unit, and moreover, to prevent the communication lines from being cut in a distribution board for energization control. <P>SOLUTION: The distribution board 1 is equipped with a main breaker 3 interposed in main bars 20, a plurality of branch breakers 4 interposed in the plurality of branch circuits 21 branched from the main bars 20, and a monitoring unit 5 for monitoring the energizing information. The main breaker 3 and the branch breaker 4 are equipped with communication slave units 31, 412 for outputting the energization information, and the monitoring unit 5 is equipped with a communication master unit 51 for receiving the energization information from the communication slave units 31, 412. Communication between the communication slave units 31, 412 and the communication master unit 51 is performed by power line carrier communication via a power wiring path including the main bars 20. Since this communication is performed by power line carrier communication, the communication lines are not required which connect the communication slave units 31, 412 and the communication master unit 51, and the time and labor required for wiring can be reduced. Moreover, an accident due to the cutting of the communication lines can be prevented. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、通電状態を管理する分電盤に関する。   The present invention relates to a distribution board for managing an energized state.

従来の、この種の分電盤の例を図16に示す。分電盤101は、電力線102に介在させた主幹ブレーカ103と、電力線102から分岐した複数の分岐回路121の各々に介在させた分岐ブレーカ104と、監視ユニット105と、増設ユニット115などを備え、各分岐ブレーカ104は、その二次側配線に各分岐回路121の電流の通電情報を1箇所に集め集中監視するために、変流器(CURRENT TRANSFORMER 以下、CTと記す)122を備えている。これら各CT122は、通信線123によって個別に、監視ユニット105や増設ユニット115に接続され、状態監視ユニット105は、各CT122からの通電情報を表示する。   An example of a conventional distribution board of this type is shown in FIG. The distribution board 101 includes a main breaker 103 interposed in the power line 102, a branch breaker 104 interposed in each of a plurality of branch circuits 121 branched from the power line 102, a monitoring unit 105, an extension unit 115, and the like. Each branch breaker 104 includes a current transformer (CURRENT TRANSFORMER, hereinafter referred to as CT) 122 in order to collect and energize current energization information of each branch circuit 121 at one location on the secondary side wiring. Each of these CTs 122 is individually connected to the monitoring unit 105 and the extension unit 115 via the communication line 123, and the state monitoring unit 105 displays energization information from each CT 122.

しかしながら、このような従来の分電盤101においては、各CT122が監視ユニット105や増設ユニット115と通信線123で繋げられるために、分岐ブレーカ104の数が多いと配線作業に手間がかかり、また、通信線123を引っ掛けて切断した場合、CT122の出力電圧が大きくなり危険である。また、監視ユニット105や増設ユニット115も端子部が多く必要となり、大型化する。   However, in such a conventional distribution board 101, each CT 122 is connected to the monitoring unit 105 or the extension unit 115 via the communication line 123. Therefore, if the number of branch breakers 104 is large, wiring work is troublesome. When the communication line 123 is hooked and disconnected, the output voltage of the CT 122 increases, which is dangerous. In addition, the monitoring unit 105 and the extension unit 115 also require a large number of terminals, and are increased in size.

また、分電盤と外部の監視装置の間において、通電情報などの通信を行なうのに、電力線搬送通信(POWER LINE COMMUNICATION 以下、PLCという)によって行なう分電盤が知られている(例えば、特許文献1参照)。このPLCにおいて用いられる通信の周波数は、電波法により、10kHz〜450kHzと、2MHz〜30MHzに定められている。   In addition, a distribution board is known that performs communication such as energization information between a distribution board and an external monitoring device by using power line communication (hereinafter referred to as PLC) (for example, a patent). Reference 1). The frequency of communication used in this PLC is set to 10 kHz to 450 kHz and 2 MHz to 30 MHz by the radio wave method.

しかしながら、上記特許文献1に示されるような分電盤においても、分電盤内の分岐ブレーカと監視ユニット間の通信は通信線によって行なっており、通信線の配線作業に手間がかかる。
特開平8−79987号公報
However, even in the distribution board as shown in Patent Document 1, communication between the branch breaker in the distribution board and the monitoring unit is performed by a communication line, and it takes time to wire the communication line.
JP-A-8-79987

本発明は、上記従来の問題を解決するためになされたものであり、通電状態を管理するのに、ブレーカと監視ユニット間の通信線の配線作業に手間がかからず、また、通信線の切断の虞がない分電盤を提供することを目的とする。   The present invention has been made in order to solve the above-described conventional problems, and in order to manage the energization state, it does not take time to wire the communication line between the breaker and the monitoring unit. An object of the present invention is to provide a distribution board having no risk of cutting.

上記目的を達成するために請求項1の発明は、主回路としてのメインバーに介在させた主幹ブレーカと、前記メインバーから分岐された複数の分岐回路に介在させた複数の分岐ブレーカと、各ブレーカの通電情報を監視する監視ユニットと、を備えた分電盤において、前記各ブレーカの通電情報を出力する電力線通信子機と、前記監視ユニットに設けられ、前記電力線通信子機からの通電情報を受信する電力線通信親機と、を備え、前記電力線通信子機と電力線通信親機との間は、前記メインバーを含む電力配線路を介して通信されるものである。   In order to achieve the above object, the invention of claim 1 includes a main breaker interposed in a main bar as a main circuit, a plurality of branch breakers interposed in a plurality of branch circuits branched from the main bar, In a distribution board comprising a monitoring unit for monitoring energization information of a breaker, a power line communication slave unit that outputs the energization information of each breaker, and an energization information from the power line communication slave unit provided in the monitoring unit A power line communication master unit that receives the power line communication between the power line communication slave unit and the power line communication master unit via a power wiring path including the main bar.

請求項2の発明は、請求項1に記載の分電盤において、前記電力線通信子機は、前記各ブレーカの一次側又は二次側に配置されるものである。   According to a second aspect of the present invention, in the distribution board according to the first aspect, the power line communication slave unit is disposed on a primary side or a secondary side of each breaker.

請求項3の発明は、請求項1に記載の分電盤において、前記各ブレーカは、電流検出装置と、前記電流検出装置の出力値に基づいて異常を判断する異常判断部と、前記異常判断部からの信号により受電を遮断する引外し機構と、を備える電子式ブレーカであり、前記電力線通信子機を有しているものである。   According to a third aspect of the present invention, in the distribution board according to the first aspect, each breaker includes a current detection device, an abnormality determination unit that determines an abnormality based on an output value of the current detection device, and the abnormality determination. An electronic breaker including a tripping mechanism that cuts off power reception by a signal from the unit, and includes the power line communication slave unit.

請求項4の発明は、請求項1乃至請求項3のいずれか一項に記載の分電盤において、前記監視ユニットは、前記分電盤内における前記分岐ブレーカの配置位置に設けられ、前記メインバーに直接に配置されるものである。   According to a fourth aspect of the present invention, in the distribution board according to any one of the first to third aspects, the monitoring unit is provided at an arrangement position of the branch breaker in the distribution board, and It is placed directly on the bar.

請求項5の発明は、請求項1に記載の分電盤において、前記監視ユニットは、前記主幹ブレーカと分岐ブレーカの間の前記メインバーに配置されており、前記主幹ブレーカの電力線通信子機は、該主幹ブレーカの二次側に配置され、前記分岐ブレーカの電力線通信子機は、該分岐ブレーカの一次側に配置されるものである。   According to a fifth aspect of the present invention, in the distribution board according to the first aspect, the monitoring unit is disposed on the main bar between the main breaker and the branch breaker, and the power line communication slave unit of the main breaker is The power breaker is arranged on the secondary side of the main breaker, and the power line communication slave unit of the branch breaker is arranged on the primary side of the branch breaker.

請求項6の発明は、請求項1乃至請求項5のいずれか一項に記載の分電盤において、前記主幹ブレーカの一次側及び前記分岐ブレーカの二次側のいずれか一方又は両方にノイズフィルタが配置されたものである。   According to a sixth aspect of the present invention, in the distribution board according to any one of the first to fifth aspects, a noise filter is provided on one or both of the primary side of the main breaker and the secondary side of the branch breaker. Are arranged.

請求項7の発明は、請求項1乃至請求項6のいずれか一項に記載の分電盤において、前記電力線通信親機は、前記通電情報を送受信するために前記電力配線路との結合を図る結合回路を備え、前記結合回路は前記メインバーに接続される3巻線トランスと、該3巻線トランスの1次側に配せられるコンデンサとを有するものである。   A seventh aspect of the present invention is the distribution board according to any one of the first to sixth aspects, wherein the power line communication master unit is coupled to the power wiring path to transmit and receive the energization information. The coupling circuit includes a three-winding transformer connected to the main bar and a capacitor disposed on the primary side of the three-winding transformer.

請求項8の発明は、請求項1乃至請求項6のいずれか一項に記載の分電盤において、前記電力線通信親機は、前記通電情報を送受信するために前記電力配線路との結合を図る結合回路を備え、前記結合回路は前記メインバーに接続される2巻線トランスと、前記2巻線トランスを前記メインバーの任意の相に接続する3接点の切り替えが可能な切替スイッチと、前記2巻線トランスの1次側に配せられるコンデンサとを有するものである。   An eighth aspect of the present invention is the distribution board according to any one of the first to sixth aspects, wherein the power line communication master unit is coupled to the power wiring path to transmit and receive the energization information. A two-winding transformer connected to the main bar, and a changeover switch capable of switching three contacts for connecting the two-winding transformer to an arbitrary phase of the main bar; And a capacitor disposed on the primary side of the two-winding transformer.

請求項9の発明は、請求項1乃至請求項8のいずれか一項に記載の分電盤において、前記各ブレーカは、前記分岐回路に接続され電源を取得する電源回路と、前記電源回路と前記メインバーとの間の前記分岐回路に配せられ電流を検出すると共に通信の結合回路でのトランスとなる変流器と、前記電源回路の入力端子間に配せられ電力線搬送通信で使用する信号周波数帯域に対してインピーダンスが低い回路素子と、を備えたものである。   According to a ninth aspect of the present invention, in the distribution board according to any one of the first to eighth aspects, each of the breakers is connected to the branch circuit to obtain a power source, the power source circuit, A current transformer which is arranged in the branch circuit between the main bar and detects a current and is a transformer in a communication coupling circuit, and is arranged between an input terminal of the power supply circuit and used in power line carrier communication. And a circuit element having a low impedance with respect to the signal frequency band.

請求項1の発明によれば、電力配線路により通信を行なうので、電力線通信親機と電力線通信子機とを繋ぐ通信線が不要になり、配線の手間を少なくすることができる。また、通信線の切断による事故を防ぐことができる。   According to the first aspect of the present invention, since communication is performed through the power wiring path, a communication line that connects the power line communication master unit and the power line communication slave unit becomes unnecessary, and wiring effort can be reduced. In addition, it is possible to prevent accidents due to disconnection of communication lines.

請求項2の発明によれば、ブレーカと電力線通信子機とは別個であり、ブレーカに電力線子機を接続して通信を行なうので、ブレーカを、電力配線路による通信を行なわない分電盤と共通にすることができる。   According to the invention of claim 2, since the breaker and the power line communication slave unit are separate, and the power line slave unit is connected to the breaker to perform communication, the breaker is connected to the distribution board that does not perform communication through the power wiring path. Can be common.

請求項3の発明によれば、電子式ブレーカが電力線通信子機を有するので、ブレーカと電力線通信子機とを別にするよりも部品が少なくてよく、分電盤を安価にすることができる。   According to the invention of claim 3, since the electronic breaker has the power line communication slave unit, the number of parts may be smaller than when the breaker and the power line communication slave unit are separately provided, and the distribution board can be made inexpensive.

請求項4の発明によれば、監視ユニットを容易に分電盤に取り付けることができる。また、メインバーのみを通信経路とするので、通信線の切断が無く、電力線通信子機との距離が短くなるので通信の信頼性が向上する。また、分岐ブレーカが設置されていない空きスペースに監視ユニットを設置でき、分電盤内のスペースを活用することができる。   According to the invention of claim 4, the monitoring unit can be easily attached to the distribution board. Further, since only the main bar is used as the communication path, the communication line is not cut off, and the distance from the power line communication slave unit is shortened, so that the communication reliability is improved. Also, the monitoring unit can be installed in an empty space where no branch breaker is installed, and the space in the distribution board can be utilized.

請求項5の発明によれば、通電異常によるトリップ発生時やブレーカのオフ時にも、電力線通信親機と電力線通信子機間の通信を行なうことができる。   According to the fifth aspect of the present invention, communication between the power line communication master unit and the power line communication slave unit can be performed even when a trip occurs due to an energization abnormality or when the breaker is turned off.

請求項6の発明によれば、外部からのノイズが入らないので、通信の信頼性が向上する。また、分電盤内の通信によるノイズが、他の分電盤や機器に影響を及ぼすことを防ぐことができる。   According to the sixth aspect of the present invention, noise from the outside does not enter, so that communication reliability is improved. Further, it is possible to prevent noise due to communication in the distribution board from affecting other distribution boards and devices.

請求項7の発明によれば、結合回路路の部品を少なくすることができるので、分電盤を安価にすることができる。   According to the seventh aspect of the invention, the number of parts of the coupling circuit path can be reduced, so that the distribution board can be made inexpensive.

請求項8の発明によれば、電力線通信親機の結合回路をメインバーの任意の相だけに接続することができ、他の相の信号からの影響を排除することができるので、通信の信頼性を良くすることができる。   According to the invention of claim 8, since the coupling circuit of the power line communication master unit can be connected only to an arbitrary phase of the main bar and the influence from the signals of other phases can be eliminated, the communication reliability The sex can be improved.

請求項9の発明によれば、電流を検出する変流器が結合回路のトランスにも共用され、ブレーカの部品が少なくなるので、分電盤を安価にすることができる。   According to the ninth aspect of the present invention, the current transformer for detecting the current is also shared by the transformer of the coupling circuit, and the number of breaker parts is reduced, so that the distribution board can be made inexpensive.

(第1の実施形態)
本発明の第1の実施形態に係る分電盤について図1乃至図4を参照して説明する。分電盤1は、図1に示されるように、外部の商用電源に接続された電力線2に接続された主幹ブレーカ3と、主幹ブレーカ3に接続され主回路を形成するメインバー20と、メインバー20から分岐した複数の分岐回路21に配設された分岐ブレーカ4と、各分岐回路の通電情報を管理し表示する監視ユニット5と、をケース11中に備えている。
(First embodiment)
A distribution board according to a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the distribution board 1 includes a main breaker 3 connected to a power line 2 connected to an external commercial power source, a main bar 20 connected to the main breaker 3 and forming a main circuit, The case 11 includes a branch breaker 4 disposed in a plurality of branch circuits 21 branched from the bar 20 and a monitoring unit 5 that manages and displays energization information of each branch circuit.

主幹ブレーカ3は、電力線2の接続をオン・オフする接点を有している。主幹ブレーカ3は、3本の電力線2毎に貫通された3個のCT(図示なし)と、通信子機31とを有しており、CTによって検出した電流の通電情報を通信子機31からメインバー20を介して、PLCにより監視ユニット5へ出力する。メインバー20は、バー形状であり、分電盤1の中央部においては、3本のメインバー20が互いに接触しないように間隔を開けて、平行な状態で分電盤1の上部から下部へかけて配設されている。   The main breaker 3 has a contact for turning on / off the connection of the power line 2. The main breaker 3 has three CTs (not shown) penetrated for each of the three power lines 2 and a communication slave unit 31, and current energization information detected by the CT is transmitted from the communication slave unit 31. Output to the monitoring unit 5 via the main bar 20 by PLC. The main bar 20 has a bar shape. In the central portion of the distribution board 1, the main bars 20 are spaced apart from each other so that the three main bars 20 do not come into contact with each other. It is arranged over.

分岐ブレーカ4は、アダプタ部41と、ブレーカ部42とから成っており、アダプタ部41に、メインバー20に接続されるプラグイン端子411を備え、ブレーカ部42に、負荷が接続される分岐回路21の配線が接続される負荷端子部421を備えている。分岐ブレーカ4は分岐回路21に過電流が流れると分岐回路21を遮断し、負荷への電源供給を停止する。また、分岐ブレーカ4は、分岐回路21の配線に貫通された1個のCT(図示なし)をブレーカ部42に有しており、CTによって検出した電流の通電情報をアダプタ部41に有する通信子機412からメインバー20を介して、PLCにより監視ユニット5へ出力する。監視ユニット5は、メインバー20と接続線22により繋がる通信親機51を有しており、通信親機51によって、主幹ブレーカ3の通信子機31、及び分岐ブレーカ4の通信子機412から出力された通電情報を受信し、表示する。   The branch breaker 4 includes an adapter unit 41 and a breaker unit 42. The adapter unit 41 includes a plug-in terminal 411 connected to the main bar 20, and a branch circuit in which a load is connected to the breaker unit 42. A load terminal portion 421 to which 21 wires are connected is provided. When an overcurrent flows through the branch circuit 21, the branch breaker 4 shuts off the branch circuit 21 and stops supplying power to the load. Further, the branch breaker 4 has one CT (not shown) penetrating through the wiring of the branch circuit 21 in the breaker unit 42, and a communicator having current supply information detected by CT in the adapter unit 41. The data is output from the machine 412 to the monitoring unit 5 via the main bar 20 by PLC. The monitoring unit 5 includes a communication master device 51 connected to the main bar 20 by a connection line 22, and outputs from the communication slave device 31 of the master breaker 3 and the communication slave device 412 of the branch breaker 4 by the communication master device 51. The received energization information is received and displayed.

分岐ブレーカ4は、図2に示されるように、アダプタ部41とブレーカ部42とを備えている。アダプタ部41は、メインバー20に接続されるプラグイン端子411と、ブレーカ部42と機械的及び電気的に結合される接続端子413と、ブレーカ部42のCT422からの通電情報を受信する制御端子部414を有している。アダプタ部41は、また、制御端子部414が受信した通電情報を演算処理する情報処理部415と、分岐回路のアドレスを設定するアドレス設定部416と、通電情報とアドレスを監視ユニット5へ出力する通信子機412と、プラグイン端子411と接続端子413とを結ぶ配線417と、配線417から受電し通信子機412や情報処理部415に駆動電源を供給する電源回路部418と、を有している。   As shown in FIG. 2, the branch breaker 4 includes an adapter part 41 and a breaker part 42. The adapter unit 41 includes a plug-in terminal 411 connected to the main bar 20, a connection terminal 413 mechanically and electrically coupled to the breaker unit 42, and a control terminal that receives energization information from the CT 422 of the breaker unit 42. Part 414. The adapter unit 41 also outputs an information processing unit 415 that performs arithmetic processing on the energization information received by the control terminal unit 414, an address setting unit 416 that sets the address of the branch circuit, and outputs the energization information and address to the monitoring unit 5. A communication slave unit 412; a wiring 417 that connects the plug-in terminal 411 and the connection terminal 413; and a power supply circuit unit 418 that receives power from the wiring 417 and supplies driving power to the communication slave unit 412 and the information processing unit 415. ing.

プラグイン端子411は、3本のメインバー20の内の所定の2本に接続されて受電すると共に、通信子機412からの信号をメインバー20に出力する。接続端子413は、ブレーカ部42の電源端子部423とネジ結合され、電源をブレーカ部42へ供給する。アドレス設定部416は、ユーザの操作によってアドレスが設定され、設定されたアドレスを通信子機412へ出力する。通信子機412は、配線417上に配されており、情報処理部415から受信した通電情報と、アドレス設定部416から受信したアドレスを、配線417、プラグイン端子411、及びメインバー20を介して、PLCにより監視ユニットへ出力する。   The plug-in terminal 411 is connected to predetermined two of the three main bars 20 to receive power and outputs a signal from the communication slave unit 412 to the main bar 20. The connection terminal 413 is screw-coupled to the power supply terminal part 423 of the breaker part 42 and supplies power to the breaker part 42. The address setting unit 416 sets an address by a user operation, and outputs the set address to the communication slave unit 412. The communication slave unit 412 is arranged on the wiring 417, and the energization information received from the information processing unit 415 and the address received from the address setting unit 416 are connected via the wiring 417, the plug-in terminal 411, and the main bar 20. And output to the monitoring unit by the PLC.

アダプタ部41と結合されるブレーカ部42は、アダプタ部41の接続端子413と結合される電源端子部423と、電源端子部423と上述した負荷端子部421を繋ぐ配線424を備え、配線424上には、接点機構部425と、引外し機構部426と、CT422とが配設されている。接点機構部425は、スイッチレバー427と連動して配線424の接続をオン・オフする接点を有している。引外し機構部426は、例えばバイメタル(図示なし)を有しており、配線424に過電流が流れると、接点機構部425の接点をオフにする。CT422は、配線424を流れる電流を検出して、アダプタ部41の制御端子部414へ通電情報を出力する。   The breaker unit 42 coupled to the adapter unit 41 includes a power terminal unit 423 coupled to the connection terminal 413 of the adapter unit 41, and a wiring 424 that connects the power terminal unit 423 and the load terminal unit 421 described above. Are provided with a contact mechanism portion 425, a trip mechanism portion 426, and a CT422. The contact mechanism portion 425 has a contact that turns on / off the connection of the wiring 424 in conjunction with the switch lever 427. The trip mechanism 426 includes, for example, a bimetal (not shown), and when an overcurrent flows through the wiring 424, the contact of the contact mechanism 425 is turned off. The CT 422 detects a current flowing through the wiring 424 and outputs energization information to the control terminal unit 414 of the adapter unit 41.

主幹ブレーカ3は、分岐ブレーカ4と同様に、通信子機や情報処理部等を有するアダプタ部と、接点機構部や引外し機構部等を有するブレーカ部とを接続する構成となっている(図示なし)。   As with the branch breaker 4, the main breaker 3 is configured to connect an adapter unit having a communication slave unit, an information processing unit, and the like, and a breaker unit having a contact mechanism unit, a tripping mechanism unit, and the like (illustrated). None).

分岐ブレーカ4の通信子機412は、図3に示されるように、情報処理部415に繋がる変復調処理部431及びアクセス制御部432と、変復調処理部431からの信号を増幅する送信AMP433と、通電情報を送受信するためにメインバー20との結合を図る結合回路434と、受信した信号のノイズを除去する受信フィルタ回路435と、を備える。結合回路434はコンデンサCとコイルLとを有している。通信子機412が出力するときは、情報処理部415より受信した信号を変復調処理部431によって変調処理し、送信AMP433によって増幅して、結合回路434から出力する。通信子機412が受信するときは、結合回路434によって受信し、信号のノイズを受信フィルタ回路435によって除去し、変復調処理部431によって復調処理して、アクセスが制限されていない信号のみをアクセス制御部432によって通過させ、情報処理部415へ出力する。   As shown in FIG. 3, the communication slave unit 412 of the branch breaker 4 includes a modulation / demodulation processing unit 431 and an access control unit 432 connected to the information processing unit 415, a transmission AMP 433 that amplifies a signal from the modulation / demodulation processing unit 431, A coupling circuit 434 that couples with the main bar 20 to transmit and receive information and a reception filter circuit 435 that removes noise of the received signal are provided. The coupling circuit 434 includes a capacitor C and a coil L. When the communication slave unit 412 outputs, the signal received from the information processing unit 415 is modulated by the modulation / demodulation processing unit 431, amplified by the transmission AMP 433, and output from the coupling circuit 434. When the communication slave unit 412 receives the signal, the signal is received by the combining circuit 434, the noise of the signal is removed by the reception filter circuit 435, the demodulation processing is performed by the modulation / demodulation processing unit 431, and only the signal whose access is not restricted is controlled. The data is passed by the unit 432 and output to the information processing unit 415.

通信子機から信号を受信する監視ユニット5は、図4に示されるように、接続線22によってメインバーと繋がり通電情報とアドレスを受信する通信親機51と、電源供給用の電源端子部52と、受信した通電情報を演算処理する情報処理部53と、表示するデータを設定する設定操作部54と、データを表示するデータ表示部55とを備えている。通信親機51は分岐ブレーカ4の通信子機412と同様の構成となっている。電源端子部52は、メインバー20から受電して情報処理部53等へ駆動電源を供給する。情報処理部53は、データ処理部55へ表示信号を出力すると共に、通信親機51を介して、主幹ブレーカ及び分岐ブレーカに信号を出力する。また、通信親機51に分電盤外との通信線を接続することにより、情報処理部53は、分電盤外の計測システムと通信を行なうことができる。設定操作部54は、ユーザの操作により、表示する通電情報の種類や、表示方法を設定する。データ表示部55は、例えば液晶から成っている。   As shown in FIG. 4, the monitoring unit 5 that receives a signal from the communication slave unit is connected to the main bar via a connection line 22 and receives a power supply information and address, and a power supply power supply terminal unit 52. And an information processing unit 53 that performs arithmetic processing on the received energization information, a setting operation unit 54 that sets data to be displayed, and a data display unit 55 that displays data. The communication master device 51 has the same configuration as the communication slave device 412 of the branch breaker 4. The power supply terminal unit 52 receives power from the main bar 20 and supplies driving power to the information processing unit 53 and the like. The information processing unit 53 outputs a display signal to the data processing unit 55 and also outputs a signal to the main breaker and the branch breaker via the communication master unit 51. In addition, the information processing unit 53 can communicate with a measurement system outside the distribution board by connecting a communication line outside the distribution board to the communication master unit 51. The setting operation unit 54 sets the type of energization information to be displayed and the display method by a user operation. The data display unit 55 is made of, for example, liquid crystal.

上記のように構成された分電盤1の動作を次に説明する。分岐ブレーカ4のCT422は検出した配線424の通電情報を、制御端子部414を介して情報処理部415へ出力し、情報処理部415は通電情報をA/D変換して演算処理を行い、通信子機412へ出力する。通信子機412は、情報処理部415からの通電情報と、アドレス設定部416によって設定されたアドレスとを、変復調処理部431によって変調処理し、送信AMP433によって増幅して、結合回路434から配線417、プラグイン端子411及びメインバー20を介してPLCにより監視ユニット5へ送信する。監視ユニット5は、メインバー20に接続した接続線22から、分岐回路21の通電情報とアドレスを通信親機51によって受信し、設定操作部54によって設定された条件に基づいてデータ処理部55に表示する。また、監視ユニット5は、各分岐回路21のアドレスや通電情報の返信要求を、通信親機51からPLCによって、主幹ブレーカ3及び分岐ブレーカ4の通信子機31、412へ送信する。   Next, the operation of the distribution board 1 configured as described above will be described. The CT 422 of the branch breaker 4 outputs the detected energization information of the wiring 424 to the information processing unit 415 via the control terminal unit 414, and the information processing unit 415 performs A / D conversion on the energization information to perform communication processing. The data is output to the slave unit 412. The communication slave unit 412 modulates the energization information from the information processing unit 415 and the address set by the address setting unit 416 by the modulation / demodulation processing unit 431, amplifies it by the transmission AMP 433, and connects the coupling circuit 434 to the wiring 417. Then, the data is transmitted to the monitoring unit 5 by the PLC via the plug-in terminal 411 and the main bar 20. The monitoring unit 5 receives the energization information and address of the branch circuit 21 from the connection line 22 connected to the main bar 20 by the communication master unit 51, and sends it to the data processing unit 55 based on the conditions set by the setting operation unit 54. indicate. In addition, the monitoring unit 5 transmits a reply request for the address of each branch circuit 21 and energization information from the communication master device 51 to the communication slave devices 31 and 412 of the main breaker 3 and the branch breaker 4 by PLC.

かくして、本実施形態の分電盤1によれば、主幹ブレーカ3と分岐ブレーカ4とをメインバー20に接続するだけで、PLCにより監視ユニット5と通信を行なうことができるので、通信親機51と通信子機31、412とを繋ぐ通信線が不要になり、配線の手間を少なくすることができる。また、通信線の切断による事故を防ぐことができる。また、電圧等の通電情報を検出する種々のセンサを主幹ブレーカ3と分岐ブレーカ4とに設けることにより、複雑な通電情報を表示することができる。また、PLCを分電盤内で行なっているので、メインバー20の長さ分の短距離での通信でよく、信号の減衰などの制約がかからないため、分電盤外とPLCによって通信を行なうのと異なり、小型で安価な通信親機51、通信子機31、412によって信頼性の高い通信を行なうことができる。また、ブレーカ部42とアダプタ部41とは別個であり、ブレーカ部42にアダプタ部41を接続して通信を行なうので、ブレーカ部42を、PLCによる通信を行なわない分電盤と共通にすることができる。また、通信機能を有さないブレーカにアダプタ部41を付設することにより、PLCを行なうことができる。   Thus, according to the distribution board 1 of the present embodiment, it is possible to communicate with the monitoring unit 5 by the PLC only by connecting the main breaker 3 and the branch breaker 4 to the main bar 20, so that the communication master unit 51 And a communication line connecting the communication slave units 31 and 412 are not necessary, and the labor of wiring can be reduced. In addition, it is possible to prevent accidents due to disconnection of communication lines. Further, by providing various sensors for detecting energization information such as voltage in the main breaker 3 and the branch breaker 4, complicated energization information can be displayed. Further, since the PLC is performed in the distribution board, communication over a short distance corresponding to the length of the main bar 20 is sufficient, and there is no restriction such as signal attenuation. Therefore, communication is performed with the PLC outside the distribution board. Unlike the above, it is possible to perform highly reliable communication by the small and inexpensive communication master device 51 and communication slave devices 31 and 412. Further, since the breaker unit 42 and the adapter unit 41 are separate and communicate by connecting the adapter unit 41 to the breaker unit 42, the breaker unit 42 is made common with a distribution board that does not perform communication by PLC. Can do. Moreover, PLC can be performed by attaching the adapter part 41 to the breaker which does not have a communication function.

また、主幹ブレーカ3において、通信子機31及び情報処理部を接点機構部よりメインバー20側に設置してもよい。分岐ブレーカ4の通信子機412等が接点機構部425よりもメインバー20側に配置されており、監視ユニット5もメインバー20に接続されているので、監視ユニット5と主幹ブレーカ3と分岐ブレーカ4の間において、メインバー20が遮断されることがなく、通電異常によるトリップや主幹ブレーカ3又は分岐ブレーカ4のオフ時にも、通信親機51と、主幹ブレーカ3の通信子機31、及び分岐ブレーカ4の通信子機412の間で通信を行なうことができる。   Further, in the main breaker 3, the communication slave unit 31 and the information processing unit may be installed on the main bar 20 side from the contact mechanism unit. Since the communication slave unit 412 and the like of the branch breaker 4 are arranged on the main bar 20 side of the contact mechanism unit 425, and the monitoring unit 5 is also connected to the main bar 20, the monitoring unit 5, the main breaker 3, and the branch breaker 4, the main bar 20 is not shut off, and the communication master unit 51, the communication slave unit 31 of the master breaker 3, and the branching even when the trip due to the energization abnormality or the main breaker 3 or the branch breaker 4 is turned off Communication can be performed between the communication slave units 412 of the breaker 4.

また、主幹ブレーカ3の一次側と分岐ブレーカ4の二次側にノイズフィルタを設置してもよい。図5(a)に主幹ブレーカ3に設置するノイズフィルタ6aの構成を、図5(b)に分岐ブレーカ4に設置するノイズフィルタ6bの構成を、図6にこれらノイズフィルタ6a、6bを設置した分電盤1の正面視を示す。ノイズフィルタ6a、6bは、例えば、チョークコイルLとコンデンサCを有している。ノイズフィルタ6a、6bを設置することにより、商用電源側と負荷側からのノイズが少なくなるので、通信親機51と、通信子機31、412との間の通信の信頼性が向上する。また、分電盤内の通信によるノイズが、他の分電盤や負荷に影響を及ぼすことを防ぐことができる。ノイズフィルタ6a、6bの設置は、分電盤の設置環境に合わせて主幹ブレーカ3の一次側と分岐ブレーカ4の二次側のいずれかだけにしてもよい。   Further, a noise filter may be installed on the primary side of the main breaker 3 and the secondary side of the branch breaker 4. FIG. 5A shows the configuration of the noise filter 6a installed in the main breaker 3, FIG. 5B shows the configuration of the noise filter 6b installed in the branch breaker 4, and FIG. 6 shows these noise filters 6a and 6b installed. The front view of the distribution board 1 is shown. The noise filters 6a and 6b include, for example, a choke coil L and a capacitor C. By installing the noise filters 6a and 6b, noise from the commercial power supply side and the load side is reduced, so that the reliability of communication between the communication parent device 51 and the communication child devices 31 and 412 is improved. Further, it is possible to prevent noise caused by communication in the distribution board from affecting other distribution boards and loads. The noise filters 6a and 6b may be installed only on either the primary side of the main breaker 3 or the secondary side of the branch breaker 4 according to the installation environment of the distribution board.

次に、上記第1の実施形態の分電盤1の変形例の構成について図7を参照して説明する。本変形例は、監視ユニット5を分岐ブレーカ4の配置位置に配設したものである。図7は、変形例における分電盤の正面視を示す。監視ユニット5は、プラグイン端子(図示なし)を有しており、プラグイン端子によってメインバー20と接続することができる。このことにより、監視ユニット5を容易に分電盤1に取り付けることができる。また、メインバー20のみを通信経路とするので、通信線の切断が無く、通信子機412との距離が短くなるので通信の信頼性が向上する。また、分岐ブレーカ4が設置されていない空きスペースに監視ユニット5を設置することができ、分電盤内のスペースを活用することができる。   Next, the structure of the modification of the distribution board 1 of the said 1st Embodiment is demonstrated with reference to FIG. In this modification, the monitoring unit 5 is disposed at the position where the branch breaker 4 is disposed. FIG. 7 shows a front view of a distribution board in a modified example. The monitoring unit 5 has a plug-in terminal (not shown), and can be connected to the main bar 20 by the plug-in terminal. Thus, the monitoring unit 5 can be easily attached to the distribution board 1. Further, since only the main bar 20 is used as a communication path, the communication line is not cut, and the distance from the communication slave unit 412 is shortened, so that the reliability of communication is improved. Moreover, the monitoring unit 5 can be installed in an empty space where the branch breaker 4 is not installed, and the space in the distribution board can be utilized.

(第2の実施形態)
本発明の第2の実施形態に係る分電盤について図8を参照して説明する。本実施形態の分電盤の分岐ブレーカは、第1の実施形態における分岐ブレーカのブレーカ部とアダプタ部とを一体とし、更に、電子式ブレーカにされたものである。図8は、分岐ブレーカの構成を示す。
(Second Embodiment)
A distribution board according to a second embodiment of the present invention will be described with reference to FIG. The branch breaker of the distribution board according to the present embodiment is an electronic breaker in which the breaker portion and the adapter portion of the branch breaker according to the first embodiment are integrated. FIG. 8 shows the configuration of the branch breaker.

分岐ブレーカ4は、情報処理部に代えて異常判断部428を備えている。異常判断部428は、第1の実施形態の情報処理部と同様にCT422が検出した通電情報とアドレスを通信子機412から監視ユニットへ出力すると共に、CT422が検出した通電情報から過電流等の通電異常を判断し、通電異常が発生した場合には、異常内容をアドレスと共に通信子機412から監視ユニットへ出力し、その後に、引外し機構部426へ信号を出力して接点機構部425に配線424を遮断させる。主幹ブレーカ3も分岐ブレーカ4と同様の構成となる。   The branch breaker 4 includes an abnormality determination unit 428 instead of the information processing unit. The abnormality determination unit 428 outputs the energization information and the address detected by the CT 422 to the monitoring unit from the communication slave unit 412 as well as the information processing unit of the first embodiment, and detects an overcurrent or the like from the energization information detected by the CT 422. When an energization abnormality is determined and the energization abnormality occurs, the content of the abnormality is output from the communication slave unit 412 to the monitoring unit together with the address, and then a signal is output to the trip mechanism unit 426 to the contact mechanism unit 425. The wiring 424 is shut off. The main breaker 3 has the same configuration as the branch breaker 4.

このように構成されていることにより、主幹ブレーカ3と分岐ブレーカ4とが、通信子機を有する電子式ブレーカとなるので、バイメタルが不要となり、また、異常判断部428のマイコンを通信にも活用することができる。ブレーカと通信子機とを別にするよりも部品が少なくてよく、分電盤を安価にすることができる。   With this configuration, the main breaker 3 and the branch breaker 4 are electronic breakers having communication slave units, so that no bimetal is required, and the microcomputer of the abnormality determination unit 428 is also used for communication. can do. There are fewer parts than separating the breaker and the communication slave unit, and the distribution board can be made inexpensive.

(第3の実施形態)
本発明の第3の実施形態に係る分電盤について図9を参照して説明する。本実施形態の分電盤は、通信親機の結合回路の構成が第1の実施形態と異なっている。図9は通信親機51の構成を示す。通信親機51の結合回路511は、3巻線トランスT1とコンデンサC1、C2を有している。3巻線トランスT1の1次側巻線n1の一端はコンデンサC1を介してメインバー20のバーL1に接続され、他端はバーN、及び1次側巻線n2の一端に接続されている。また、1次巻線n2の他端はコンデンサC2を介してバーL2に接続されている。トランスT1の2次巻線n3の一端は送信アンプ512と受信フィルタ513に接続され、他端は通信親機51のグランドへ接続されている。
(Third embodiment)
A distribution board according to a third embodiment of the present invention will be described with reference to FIG. The distribution board of the present embodiment is different from the first embodiment in the configuration of the coupling circuit of the communication master unit. FIG. 9 shows the configuration of the communication master device 51. The coupling circuit 511 of the communication master device 51 includes a three-winding transformer T1 and capacitors C1 and C2. One end of the primary winding n1 of the three-winding transformer T1 is connected to the bar L1 of the main bar 20 via the capacitor C1, and the other end is connected to the bar N and one end of the primary winding n2. . The other end of the primary winding n2 is connected to the bar L2 via the capacitor C2. One end of the secondary winding n3 of the transformer T1 is connected to the transmission amplifier 512 and the reception filter 513, and the other end is connected to the ground of the communication master device 51.

このように構成された通信親機51において、送信AMP512から信号送信を行う場合、3巻線トランスT1の2次巻線n3に電流が流れ、3巻線トランスT1の1次巻線n1、n2に電圧が誘起される。この誘起された電圧は電力線搬送通信の周波数帯におけるインピーダンスが小さいコンデンサC1、C2を介してメインバー20に重畳され、3巻線トランスの1次巻線n1に誘起された電圧はバーL1、N間に、1次巻線n2に誘起された電圧はバーL2、N間に重畳される。そのため、バーL1、L2間にも電圧が重畳されることになる。これにより、送信AMP512から出力された信号はメインバー20の100V端子間(バーL1、N間とバーL2、N間)と200V端子間(バーL1、L2間)に重畳されることになり、それぞれの系統に接続されたブレーカに内蔵される通信子機に対して信号伝送が可能となる。   In the communication master device 51 configured as described above, when signal transmission is performed from the transmission AMP 512, a current flows through the secondary winding n3 of the three-winding transformer T1, and the primary windings n1 and n2 of the three-winding transformer T1. A voltage is induced in This induced voltage is superimposed on the main bar 20 via capacitors C1, C2 having low impedance in the frequency band of power line carrier communication, and the voltage induced in the primary winding n1 of the three-winding transformer is represented by bars L1, N. In the meantime, the voltage induced in the primary winding n2 is superimposed between the bars L2 and N. Therefore, a voltage is also superimposed between the bars L1 and L2. Thereby, the signal output from the transmission AMP 512 is superimposed between the 100V terminals of the main bar 20 (between the bars L1 and N and between the bars L2 and N) and between the 200V terminals (between the bars L1 and L2). Signal transmission is possible to the communication slave unit built in the breaker connected to each system.

上述した通信方向とは逆にブレーカに内蔵された通信子機からの送信信号を受信する場合は上述した動作とは逆になり、3巻線トランスT1の2次巻線n3に誘起された電圧を、受信フィルタ回路513を介して復調することで信号受信が可能となる。200V用のブレーカから送信された受信信号の電圧は、1次側巻線n1の巻数をm1、1次側巻線n2の巻数をm2、2次巻線n3の巻数をm3とすると、受信フィルタに入力される時にm3/(m1+m2)となり、例えば、m1:m2:m3=1:1:1の場合に1/2となる。このように200V用のブレーカから送信された受信信号の電圧は、100V用のブレーカから送信された受信信号の電圧の半分となるが、変復調処理部514に十分なダイナミックレンジを確保するか、200V用ブレーカと通信を行う場合、受信フィルタ回路513と変復調処理部514の間に受信信号を増幅するアンプを挿入することで、安定した受信を行うことができる。通信親機51の結合回路511を1つの3巻線トランスT1と2つのコンデンサC1、C2によって構成することができるので、分電盤を安価にすることができる。   Contrary to the communication direction described above, when a transmission signal is received from a communication slave unit built in the breaker, the operation is reversed and the voltage induced in the secondary winding n3 of the three-winding transformer T1. Can be received by demodulating the signal via the reception filter circuit 513. The voltage of the reception signal transmitted from the breaker for 200V is a reception filter when the number of turns of the primary winding n1 is m1, the number of turns of the primary winding n2 is m2, and the number of turns of the secondary winding n3 is m3. Is m3 / (m1 + m2), for example, it is ½ when m1: m2: m3 = 1: 1: 1. As described above, the voltage of the reception signal transmitted from the breaker for 200V is half of the voltage of the reception signal transmitted from the breaker for 100V. However, a sufficient dynamic range is ensured in the modulation / demodulation processing unit 514, or 200V When communicating with the circuit breaker, stable reception can be performed by inserting an amplifier that amplifies the reception signal between the reception filter circuit 513 and the modulation / demodulation processing unit 514. Since the coupling circuit 511 of the communication master device 51 can be constituted by one three-winding transformer T1 and two capacitors C1 and C2, the distribution board can be made inexpensive.

(第4の実施形態)
本発明の第4の実施形態に係る分電盤について図10を参照して説明する。本実施形態の分電盤は、通信親機の結合回路の構成が第3の実施形態と異なっている。図10は通信親機51の構成を示す。通信親機51の結合回路511は、2巻線トランスT2と、コンデンサC3と、2巻線トランスT2をメインバー20の任意の相に接続する3接点の切り替えが可能な切替スイッチ515と、を有する。切替スイッチ515は、アクセス制御部516からの信号により、2巻線トランスT2の1次側コイルn4のメインバー20との接続を切り替える。切替スイッチ515の接続位置を接点a1−a2にすると、2巻線コイルT2はバーL1、L2に接続され、接点b1−b2にすると、2巻線コイルT2はバーL1、Nに接続され、接点c1−c2にすると、2巻線コイルT2はバーL2、Nに接続される。このように、2巻線コイルT2をメインバー20の任意の相に接続することができ、他の相の信号からの影響を排除することができるので、通信の信頼性が良くなる。
(Fourth embodiment)
A distribution board according to a fourth embodiment of the present invention will be described with reference to FIG. The distribution board of the present embodiment is different from the third embodiment in the configuration of the coupling circuit of the communication master unit. FIG. 10 shows the configuration of the communication base unit 51. The coupling circuit 511 of the communication master unit 51 includes a two-winding transformer T2, a capacitor C3, and a changeover switch 515 capable of switching three contacts that connect the two-winding transformer T2 to an arbitrary phase of the main bar 20. Have. The changeover switch 515 switches the connection of the primary coil n4 of the two-winding transformer T2 with the main bar 20 according to a signal from the access control unit 516. When the connection position of the changeover switch 515 is set to the contact a1-a2, the 2-winding coil T2 is connected to the bars L1, L2, and when the contact b1-b2 is set, the 2-winding coil T2 is connected to the bars L1, N. When c1-c2, the two-winding coil T2 is connected to the bars L2, N. In this way, the two-winding coil T2 can be connected to an arbitrary phase of the main bar 20, and the influence from signals of other phases can be eliminated, so that the reliability of communication is improved.

(第5の実施形態)
本発明の第5の実施形態に係る分電盤について図11を参照して説明する。本実施形態の分電盤は、主幹ブレーカと分岐ブレーカの構成が、第1の実施形態と異なっている。図11は分岐ブレーカ4の構成を示す。分岐ブレーカ4は、分岐回路21に接続され電源を取得する電源回路446と、分岐回路21の電流を検出するCT441と、電流を計測する電流計測部442と、信号の送受信を行なうPLC回路部443と、負荷への電源供給を遮断する引外し機構部444と、各部の動作を制御する制御回路部445と、を備えている。CT441は通信を行なうための結合回路447のトランスとしても動作し、電源部446とメインバー20との間に配せられている。CT441を電源回路446とメインバー20との間に配することにより電源回路446からのノイズの影響を防ぐことができる。CT441とPLC回路部443との間には、信号成分だけを通過させるためのコンデンサC4が配せられている。また、2本の分岐回路21間には電力線搬送通信で使用する信号周波数帯域に対してインピーダンスが低いコンデンサ(回路素子)C5が配せられている。電力線搬送通信で使用する信号周波数帯域とは、現行の電波法では、10kHz〜450kHzと、2MHz〜30MHzである。
(Fifth embodiment)
A distribution board according to a fifth embodiment of the present invention will be described with reference to FIG. The distribution board of this embodiment differs from the first embodiment in the configuration of the main breaker and the branch breaker. FIG. 11 shows the configuration of the branch breaker 4. The branch breaker 4 is connected to the branch circuit 21 to obtain a power supply, a CT 441 for detecting the current of the branch circuit 21, a current measuring unit 442 for measuring the current, and a PLC circuit unit 443 for transmitting and receiving signals. And a tripping mechanism unit 444 that cuts off the power supply to the load, and a control circuit unit 445 that controls the operation of each unit. The CT 441 also operates as a transformer of the coupling circuit 447 for performing communication, and is arranged between the power supply unit 446 and the main bar 20. By arranging the CT 441 between the power supply circuit 446 and the main bar 20, the influence of noise from the power supply circuit 446 can be prevented. Between the CT 441 and the PLC circuit unit 443, a capacitor C4 for allowing only signal components to pass therethrough is disposed. Between the two branch circuits 21, a capacitor (circuit element) C5 having a low impedance with respect to a signal frequency band used in power line carrier communication is disposed. The signal frequency band used in power line carrier communication is 10 kHz to 450 kHz and 2 MHz to 30 MHz in the current radio wave method.

電流計測部442は、CT441によって分岐回路21に流れる電流を検出し、検出信号を制御回路部445へ送信する。制御回路部445は、電流計測部442からの信号に基づいて異常を判断し、短絡や過電流等の異常の発生を判断すると引外し信号を引外し機構部444へ送信し、分岐回路21を遮断する。PLC回路部443は、制御回路部445からの信号に基づいて結合回路部447を介して、監視ユニットと通信を行なう。主幹ブレーカも分岐ブレーカ4と同様の構成となる。   The current measuring unit 442 detects a current flowing through the branch circuit 21 using the CT 441 and transmits a detection signal to the control circuit unit 445. The control circuit unit 445 determines an abnormality based on a signal from the current measuring unit 442. When the occurrence of an abnormality such as a short circuit or an overcurrent is determined, the control circuit unit 445 transmits a trip signal to the mechanism unit 444, and the branch circuit 21 is transmitted. Cut off. The PLC circuit unit 443 communicates with the monitoring unit via the coupling circuit unit 447 based on the signal from the control circuit unit 445. The main breaker has the same configuration as the branch breaker 4.

このような構成により、電流を検出するCT441が結合回路447のトランスにも共用され、分岐ブレーカ4の部品が少なくなるので、分電盤を安価にすることができる。   With such a configuration, the CT 441 for detecting current is shared by the transformer of the coupling circuit 447, and the number of parts of the branch breaker 4 is reduced, so that the distribution board can be made inexpensive.

本実施形態の分岐ブレーカの変形例を、図12を参照して説明する。本変形例の分岐ブレーカ4は分岐回路21において、電源回路446と2次側端子448との間にコイルL1を有している。このコイルL1とコンデンサC5とによって、2次側端子448に接続される負荷からのノイズを防止することができるので、監視ユニットとの通信の信頼性を良くすることができる。   A modification of the branch breaker of this embodiment will be described with reference to FIG. The branch breaker 4 of this modification has a coil L <b> 1 between the power supply circuit 446 and the secondary terminal 448 in the branch circuit 21. Since the coil L1 and the capacitor C5 can prevent noise from the load connected to the secondary terminal 448, the reliability of communication with the monitoring unit can be improved.

上述した分岐ブレーカの変形例と同一の効果を得るために、電源回路と2次側端子との間にコイルを備えていない分岐ブレーカに、コイルを付加する増設型フィルタ装置について図13及び図14を参照して説明する。図13(a)は分岐ブレーカの側面視を、図13(b)は増設型フィルタ装置を分岐ブレーカに取り付ける方法を、図14は増設型フィルタ装置の回路を示す。分岐ブレーカ4の2次側端子部451は、差し込まれた負荷のケーブル線7をクリップ452により挟み込んで固定する構成となっている。そして、増設型フィルタ装置8は、分岐ブレーカの2次側端子部451に差し込む挿入端子81とコイルL2と負荷の端子を接続する2次側端子部82を備えている。2次側端子部82は、ケーブル線7を挟み込んで固定する構成でも、ネジにより固定する構成でもよい。   In order to obtain the same effect as the above-described modification of the branch breaker, an additional filter device in which a coil is added to a branch breaker that does not include a coil between the power supply circuit and the secondary terminal is shown in FIGS. Will be described with reference to FIG. 13A shows a side view of the branch breaker, FIG. 13B shows a method of attaching the extension filter device to the branch breaker, and FIG. 14 shows a circuit of the extension filter device. The secondary side terminal portion 451 of the branch breaker 4 has a configuration in which the cable wire 7 of the inserted load is sandwiched and fixed by the clip 452. The extension filter device 8 includes an insertion terminal 81 to be inserted into the secondary terminal part 451 of the branch breaker, a secondary terminal part 82 for connecting the coil L2 and the load terminal. The secondary side terminal portion 82 may be configured to sandwich and fix the cable wire 7 or may be configured to be fixed by screws.

増設型フィルタ装置8は、挿入端子81を分岐ブレーカ4の2次側端子部451に差し込み、増設型フィルタ装置8の2次側端子部82に負荷のケーブル線7を取り付けて使用する。このような増設型フィルタ装置8を用いることにより容易に負荷からのノイズを防止することができる。図15は、内部の分岐回路がコンデンサによって接続されていない分岐ブレーカ4に用いる増設型フィルタ装置8の回路を示す。2つのコイルL2がコンデンサC6によって接続されているので、負荷からのノイズを防止することができる。   The extension type filter device 8 is used by inserting the insertion terminal 81 into the secondary side terminal portion 451 of the branch breaker 4 and attaching the load cable line 7 to the secondary side terminal portion 82 of the extension type filter device 8. By using such an additional filter device 8, noise from the load can be easily prevented. FIG. 15 shows a circuit of the additional filter device 8 used for the branch breaker 4 in which the internal branch circuit is not connected by a capacitor. Since the two coils L2 are connected by the capacitor C6, noise from the load can be prevented.

なお、本発明は、上記各種実施形態の構成に限られず、発明の趣旨を変更しない範囲で種々の変形が可能である。例えば第1の実施形態において、アダプタ部41をブレーカ部42の二次側に接続する構成としてもよい。同等の効果を得ることができる。また、CTをブレーカ部42に配置せずに、アダプタ部41に設置してもよい。   In addition, this invention is not restricted to the structure of the said various embodiment, A various deformation | transformation is possible in the range which does not change the meaning of invention. For example, in the first embodiment, the adapter unit 41 may be connected to the secondary side of the breaker unit 42. The same effect can be obtained. Further, the CT may be installed in the adapter unit 41 without being arranged in the breaker unit 42.

本発明の第1の実施形態に係る分電盤の正面図。The front view of the distribution board which concerns on the 1st Embodiment of this invention. 同分電盤における分岐ブレーカの構成図。The block diagram of the branch breaker in the same electricity distribution panel. 同分電盤における分岐ブレーカの通信子機の構成図。The block diagram of the communication subunit | mobile_unit of the branch breaker in the same electricity distribution panel. 同分電盤における監視ユニットの構成図。The block diagram of the monitoring unit in the distribution board. (a)は同分電盤における主幹ブレーカに設置するノイズフィルタの構成図、(b)は同分電盤における分岐ブレーカに設置するノイズフィルタの構成図。(A) is a block diagram of the noise filter installed in the main breaker in the distribution board, (b) is a block diagram of the noise filter installed in the branch breaker in the distribution board. 同分電盤にノイズフィルタを設置したときの正面図。The front view when a noise filter is installed in the distribution board. 同分電盤の変形例の正面図。The front view of the modification of the same electricity distribution panel. 本発明の第2の実施形態に係る分岐ブレーカの構成図。The block diagram of the branch breaker which concerns on the 2nd Embodiment of this invention. 本発明の第3の実施形態に係る通信親機の構成図。The block diagram of the communication main | base station which concerns on the 3rd Embodiment of this invention. 本発明の第4の実施形態に係る通信親機の構成図。The block diagram of the communication main | base station which concerns on the 4th Embodiment of this invention. 本発明の第5の実施形態に係る分岐ブレーカの構成図。The block diagram of the branch breaker which concerns on the 5th Embodiment of this invention. 同分岐ブレーカの変形例の構成図。The block diagram of the modification of the same branch breaker. (a)は分岐ブレーカの側面図、(b)は増設型フィルタ装置の分岐ブレーカへの取付方法を示す図。(A) is a side view of a branch breaker, (b) is a figure which shows the attachment method to the branch breaker of an expansion type filter apparatus. 増設型フィルタ装置の回路図。The circuit diagram of an expansion type filter apparatus. 分岐回路にコンデンサを有さない分岐ブレーカに取り付ける増設型フィルタ装置の回路図。The circuit diagram of the expansion type filter apparatus attached to the branch breaker which does not have a capacitor | condenser in a branch circuit. 従来の分電盤の正面図。The front view of the conventional distribution board.

符号の説明Explanation of symbols

1 分電盤
20 メインバー
21 分岐回路
3 主幹ブレーカ
31 通信子機(電力線通信子機)
4 分岐ブレーカ(電子式ブレーカ)
412 通信子機(電力線通信子機)
422 CT(電流検出装置)
426 引外し機構部(引外し機構)
428 異常判断部
441 CT(変流器)
446 電源回路
447 結合回路
5 監視ユニット
51 通信親機(電力線通信親機)
511 結合回路
515 切替スイッチ
6a、6b ノイズフィルタ
C1、C2、C3 コンデンサ
C5 コンデンサ(回路素子)
T1 3巻線トランス
T2 2巻線トランス
1 Distribution board 20 Main bar 21 Branch circuit 3 Main breaker 31 Communication cordless handset (power line communication cordless handset)
4 branch breaker (electronic breaker)
412 Communication unit (power line communication unit)
422 CT (current detection device)
426 Trip mechanism (trip mechanism)
428 Abnormality determination unit 441 CT (current transformer)
446 Power supply circuit 447 Coupling circuit 5 Monitoring unit 51 Communication master (power line communication master)
511 Coupling circuit 515 changeover switch 6a, 6b noise filter C1, C2, C3 capacitor C5 capacitor (circuit element)
T1 3-winding transformer T2 2-winding transformer

Claims (9)

主回路としてのメインバーに介在させた主幹ブレーカと、前記メインバーから分岐された複数の分岐回路に介在させた複数の分岐ブレーカと、各ブレーカの通電情報を監視する監視ユニットと、を備えた分電盤において、
前記各ブレーカの通電情報を出力する電力線通信子機と、
前記監視ユニットに設けられ、前記電力線通信子機からの通電情報を受信する電力線通信親機と、を備え、
前記電力線通信子機と電力線通信親機との間は、前記メインバーを含む電力配線路を介して通信されることを特徴とする分電盤。
A main breaker interposed in a main bar as a main circuit, a plurality of branch breakers interposed in a plurality of branch circuits branched from the main bar, and a monitoring unit for monitoring energization information of each breaker In the distribution board,
A power line communication slave that outputs energization information of each breaker;
A power line communication master unit that is provided in the monitoring unit and receives energization information from the power line communication slave unit;
A distribution board characterized in that the power line communication slave unit and the power line communication master unit communicate with each other via a power wiring path including the main bar.
前記電力線通信子機は、前記各ブレーカの一次側又は二次側に配置されることを特徴とする請求項1に記載の分電盤。   The distribution board according to claim 1, wherein the power line communication slave unit is arranged on a primary side or a secondary side of each breaker. 前記各ブレーカは、電流検出装置と、前記電流検出装置の出力値に基づいて異常を判断する異常判断部と、前記異常判断部からの信号により受電を遮断する引外し機構と、を備える電子式ブレーカであり、前記電力線通信子機を有していることを特徴とする請求項1に記載の分電盤。   Each of the breakers includes an electric current detection device, an abnormality determination unit that determines abnormality based on an output value of the current detection device, and a tripping mechanism that cuts off power reception by a signal from the abnormality determination unit. The distribution board according to claim 1, wherein the distribution board is a breaker and includes the power line communication slave unit. 前記監視ユニットは、前記分電盤内における前記分岐ブレーカの配置位置に設けられ、前記メインバーに直接に配置されることを特徴とする請求項1乃至請求項3のいずれか一項に記載の分電盤。   The said monitoring unit is provided in the arrangement position of the said branch breaker in the said electricity distribution panel, and is arrange | positioned directly at the said main bar, The Claim 1 thru | or 3 characterized by the above-mentioned. Distribution board. 前記監視ユニットは、前記主幹ブレーカと分岐ブレーカの間の前記メインバーに配置されており、前記主幹ブレーカの電力線通信子機は、該主幹ブレーカの二次側に配置され、前記分岐ブレーカの電力線通信子機は、該分岐ブレーカの一次側に配置されることを特徴とする請求項1に記載の分電盤。   The monitoring unit is disposed in the main bar between the main breaker and the branch breaker, and the power line communication slave unit of the main breaker is disposed on the secondary side of the main breaker, and the power line communication of the branch breaker 2. The distribution board according to claim 1, wherein the slave unit is disposed on a primary side of the branch breaker. 前記主幹ブレーカの一次側及び前記分岐ブレーカの二次側のいずれか一方又は両方にノイズフィルタが配置されたことを特徴とする請求項1乃至請求項5のいずれか一項に記載の分電盤。   The distribution board according to any one of claims 1 to 5, wherein a noise filter is disposed on one or both of a primary side of the main breaker and a secondary side of the branch breaker. . 前記電力線通信親機は、前記通電情報を送受信するために前記電力配線路との結合を図る結合回路を備え、前記結合回路は前記メインバーに接続される3巻線トランスと、該3巻線トランスの1次側に配せられるコンデンサとを有することを特徴とする請求項1乃至請求項6のいずれか一項に記載の分電盤。   The power line communication master unit includes a coupling circuit for coupling with the power wiring path to transmit and receive the energization information, and the coupling circuit includes a three-winding transformer connected to the main bar, and the three windings It has a capacitor | condenser distribute | arranged to the primary side of a transformer, The distribution board as described in any one of Claim 1 thru | or 6 characterized by the above-mentioned. 前記電力線通信親機は、前記通電情報を送受信するために前記電力配線路との結合を図る結合回路を備え、前記結合回路は前記メインバーに接続される2巻線トランスと、前記2巻線トランスを前記メインバーの任意の相に接続する3接点の切り替えが可能な切替スイッチと、前記2巻線トランスの1次側に配せられるコンデンサとを有することを特徴とする請求項1乃至請求項6のいずれか一項に記載の分電盤。   The power line communication master unit includes a coupling circuit for coupling with the power wiring path to transmit and receive the energization information, and the coupling circuit includes a two-winding transformer connected to the main bar, and the two windings 2. The switch according to claim 1, further comprising: a selector switch capable of switching three contacts for connecting a transformer to an arbitrary phase of the main bar; and a capacitor disposed on a primary side of the two-winding transformer. The distribution board as described in any one of claim | item 6. 前記各ブレーカは、前記分岐回路に接続され電源を取得する電源回路と、前記電源回路と前記メインバーとの間の前記分岐回路に配せられ電流を検出すると共に通信の結合回路でのトランスとなる変流器と、前記電源回路の入力端子間に配せられ電力線搬送通信で使用する信号周波数帯域に対してインピーダンスが低い回路素子と、を備えたことを特徴とする請求項1乃至請求項8のいずれか一項に記載の分電盤。   Each breaker includes a power supply circuit connected to the branch circuit to obtain power, a transformer disposed in the branch circuit between the power supply circuit and the main bar, and a current detection circuit and a transformer in a communication coupling circuit. And a circuit element having a low impedance with respect to a signal frequency band disposed between input terminals of the power supply circuit and used for power line carrier communication. The distribution board as described in any one of 8.
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