JPS62198228A - Feeder branching circuit - Google Patents
Feeder branching circuitInfo
- Publication number
- JPS62198228A JPS62198228A JP4110486A JP4110486A JPS62198228A JP S62198228 A JPS62198228 A JP S62198228A JP 4110486 A JP4110486 A JP 4110486A JP 4110486 A JP4110486 A JP 4110486A JP S62198228 A JPS62198228 A JP S62198228A
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- JP
- Japan
- Prior art keywords
- terminal
- current
- power supply
- terminals
- state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004891 communication Methods 0.000 abstract description 8
- 230000005284 excitation Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は給電路分岐回路、特に海底ケーブル通信方式で
中継伝送路を三分岐する箇所に設置して陸上端局側の操
作により給電ルート接続を切替えるための給電路分岐回
路に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention is a power supply line branch circuit, particularly installed at a point where a relay transmission line is branched into three in a submarine cable communication system, and connected to a power supply route by operation on the land terminal station side. This invention relates to a feed line branch circuit for switching.
海底ケーブル通信方式で三つの陸上端局相互間の通信を
経済的に行うには、中継伝送路およびその敷設に要する
コストを低減するため、海中に分岐装置を設置して、こ
れと各陸上端局との間をそれぞれ海底ケーブルで接続す
る必要がある。In order to economically perform communication between three land terminal stations using the submarine cable communication system, in order to reduce the cost of relay transmission lines and their installation, a branching device is installed under the sea, and this is connected to each land terminal station. It is necessary to connect each station with a submarine cable.
第７図は上述の分岐装置における従来の給電路分岐の方
法を説明する丸めのブロック図である。FIG. 7 is a rounded block diagram illustrating a conventional method of branching a power supply line in the above-mentioned branching device.
同図には給電系統だけを示す。三つの陸上端局をＡ局、
Ｂ局および０局とし、海中に分岐装置４を設けて各陸上
端局との間を海底ケーブルで接続しである。負荷３Ａ、
３Ｂおよび３Ｃはそれぞれ、Ａ局、Ｂ局および０局と分
岐装置４との間の給電線に給電対象として接続された中
継器である。分岐装置４内で、Ａ局の方から導入した給
電線とＢ局の方から導入した給電線とを接続し、また０
局の方から導入した給電線を海中接地に一接続しである
。Ａ局およびＢ局にそれぞれ設けた、給電装置２人およ
び２Ｂは、給電線・接地間に互いに逆極性の電圧を印加
するよう接続されており、Ａ局およびＢ局間の負荷３人
および３Ｂに対し所定の電流値で給電する（両端給電）
。また０局の給電装置２Ｃは、０局および分岐回路４の
間の負荷３Ｃに対し所定の電流値で給電する（片端給電
）。The figure shows only the power supply system. Three land terminal stations are called A station,
Stations B and 0 are provided, and a branching device 4 is installed underwater and connected to each land terminal station by a submarine cable. load 3A,
3B and 3C are repeaters connected to power feed lines between the A, B, and 0 stations and the branching device 4, respectively, as power feeding targets. In the branching device 4, connect the feeder line introduced from the A station and the feeder line introduced from the B station, and
The power supply line introduced from the station was connected to the underwater ground. The power supply devices 2 and 2B installed at stations A and B, respectively, are connected to apply voltages of opposite polarity between the power supply line and ground, and the power supply devices 2 and 2B installed at stations A and B, respectively, are connected to apply voltages of opposite polarity between the power supply lines and the ground. Supplies power at a predetermined current value to (both ends power supply)
. Further, the power supply device 2C of the 0th station supplies power at a predetermined current value to the load 3C between the 0th station and the branch circuit 4 (one-end power supply).
このような給電ルート接続の切替え手段を有しない給電
路分岐法では、両端給電区間すなわちＡ局°・分岐装置
間およびＢ局・分岐装置間のうちのいずれか一方で海底
ケーブル切断などにより給電障害が生じた場合に障害が
修理されて復旧するまで三周相互間の通信がすべて不可
能になり、また片端給電区間すなわち０局・分岐装置間
の中継伝送路を接地から絶縁することができないので敷
設時に中継伝送路の対地絶縁抵抗試験や耐圧試験などを
実施できないという問題点がある。In such a power feed line branching method that does not have a means to switch the power feed route connection, a power feed failure may occur due to a submarine cable disconnection on either end of the power feed section, that is, between the A station and the branch device and between the B station and the branch device. If this occurs, all communications between the three circuits will be impossible until the fault is repaired and the system is restored, and the single-ended feed section, that is, the relay transmission line between the 0 station and the branch device, cannot be isolated from the ground. There is a problem in that it is not possible to perform ground insulation resistance tests or withstand voltage tests on relay transmission lines during installation.
本発明の目的は、上述の問題点を解決し各陸上端局およ
び分岐装置間の三つの枝路のうちの一つに障害が発生し
た場合でも残りの二つの枝路を介した通信が可能であり
、且つ各枝路を接地から絶縁し得る給電路分岐回路を提
供することにある。The purpose of the present invention is to solve the above-mentioned problems, and even if one of the three branch lines between each land terminal station and branch device fails, communication can be performed via the remaining two branch lines. It is an object of the present invention to provide a power supply line branch circuit which is capable of insulating each branch line from ground.
本発明の回路は、そｎぞれ給電線を接続する丸めの第１
、第２および第３の外部端子と、接地接続するための第
４の外部端子と、通過電流に応答して接続状態を制御す
るための第１のコイルを有し前記第１の外部端子および
第１の内部端子間に接続した第１の制御手段と、通過電
流に応答して接続状態を制御するための第２のコイルを
有し前記第２の外部端子および第２の内部端子間に接続
した第２の制御手段と、通過電流に応答して接続状態を
制御するための第３のコイルを有し前記第３の外部端子
および第３の内部端子間に接続した第３の制御手段と、
前記第１および第４の外部端子間に接続してあり前記第
２および第３のコイルの無通電時に両端間がオフ状態で
ありまた該両コイルに所定の電流値以上の電流が流れた
時に両端間がオン状態に切替わる第１の切、替手段と、
前記第２および第４の外部端子間に接続してあり前記第
３のコイルの無通電時に両端間がオフ状態でありまた該
コイルに所定の電流値以上の電流が流れた時に両端間が
オン状態に切替わる第２の切替手段と、
前記第３および第４の外部端子間に接続してあ秒前記第
１および第２のコイルの無通電時に両端間がオフ状態で
ありまた該両コイルに所定の電流値以上の電流が流れた
時に両端間がオン状態に切替わる第３の切替手段と、
前記第１ないし第３の内部端子間に接続してあし前記第
１ないし第３のコイルの無通電時に該第１ないし第３の
内部端子間に全てオン状態であり、該第２および第３の
コイルに所定の電流値以上の電流が流れた時に該＠１の
内部端子が該第２および第３の内部端子に対しオフ状態
に切替わ抄、該第１および第３のコイルに所定の電流値
以上の電流が流れた時に該第２の内部端子が該第１およ
び第３の内部端子に対しオフ状態に切替わり、また該第
１および第２のコイルに所定の電流値以上の電流が流れ
た時に該第３の内部端子が該第１およびｉｇ２の内部端
子に対しオフ状態に切替わる第４の切替手段とを、
備えている。The circuit of the present invention has the following advantages:
, second and third external terminals, a fourth external terminal for ground connection, and a first coil for controlling the connection state in response to a passing current, and the first external terminal and a first control means connected between the first internal terminal; and a second coil for controlling the connection state in response to a passing current, and between the second external terminal and the second internal terminal. a third control means connected between the third external terminal and the third internal terminal and having a third coil for controlling a connection state in response to a passing current; and,
It is connected between the first and fourth external terminals, and when the second and third coils are not energized, both terminals are in an OFF state, and when a current of a predetermined current value or more flows through both coils. A first switching means is connected between both ends of the coil is switched to an on state, and the second and fourth external terminals are connected to each other, and when the third coil is not energized, both ends of the switching means are switched to an on state. a second switching means that is switched on between both terminals when a current equal to or higher than a predetermined current value flows through the coil; and a second switching means that is connected between the third and fourth external terminals, a third switching means that is in an off state between both ends when the coil is not energized, and is switched to an on state between both ends when a current of a predetermined current value or more flows through both coils; When the first to third coils are not energized, all of the first to third internal terminals are in the on state, and a predetermined current is applied to the second and third coils. When a current exceeding a predetermined current value flows, the internal terminal of @1 is switched to an OFF state with respect to the second and third internal terminals. When the current flows, the second internal terminal is switched to the OFF state relative to the first and third internal terminals, and when a current equal to or higher than a predetermined current value flows through the first and second coils, the second internal terminal switches to the OFF state relative to the first and third internal terminals. and a fourth switching means for switching the internal terminal of ig2 to an off state with respect to the first internal terminal and the internal terminal of ig2.
次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例を示す回路図である。FIG. 1 is a circuit diagram showing an embodiment of the present invention.
給電路分岐回路１の端子１１．１２および１３はおのお
の給電線を接続するだめの端子であり、また端子Ｇは接
地に接続するための端子である。制御部Ｗ、ないしＷｌ
はおのおのリレーの電磁石の励磁用コイルでろ秒、切替
回路Ｓｏな込しＳ３はそれぞれリレーの接点から成るス
イッチ回路である。Terminals 11, 12 and 13 of the feed line branch circuit 1 are terminals for connecting respective feed lines, and terminal G is a terminal for connecting to ground. Control unit W or Wl
The switching circuit S3 is a switch circuit consisting of the contacts of each relay.
メーク接点Ｍ１およびブレーク接点Ｂ１はそれぞれ制御
部Ｗ１を流れる電流に応動するメーク接点およびブレー
ク接点である。同様に、メーク接点Ｍ、（あるいはＭ、
）およびブレーク接点Ｂｔ（あるいはＢ３はそれぞれ制
御部Ｗ！（６るいにＷ Ｓ ）を流れる電流に応動する
メーク接点お−よびブレーク接点である。Make contact M1 and break contact B1 are respectively a make contact and a break contact that respond to the current flowing through control portion W1. Similarly, make contact M, (or M,
) and break contact Bt (or B3 are the make contact and break contact, respectively, responsive to the current flowing through the control section W! (Ws)).
制御部Ｗ、は端子１１と切替回路Ｓｏとの間に接続して
あゆ、制御部Ｗ！は端子１２と切替回路Ｓｏとの間に、
また■制御部Ｗｓは端子１３と切替回路Ｓｏとの間にそ
れぞれ接続しである。切替回路Ｓ０は、ブレーク接点Ｂ
１を制御部Ｗ２およびＷｓ間に接続し、またブレーク接
点Ｂ、を制御部Ｗ、およびＷｓ間に接続し、またブレー
ク接点Ｂ。The control unit W, is connected between the terminal 11 and the switching circuit So, and then the control unit W! is between the terminal 12 and the switching circuit So,
Further, (2) the control section Ws is connected between the terminal 13 and the switching circuit So. The switching circuit S0 is a break contact B
1 is connected between the control parts W2 and Ws, and the break contact B is connected between the control parts W and Ws, and the break contact B is connected between the control parts W2 and Ws.
を制御部Ｗ１およびＷ！間に接続し九デルタ接続を有し
、無通電時には制御部Ｗ、ないしＷｓのすべてに接続し
ている。通電時に、制御部Ｗ！およびＷｌをｆｉｆｉる
電流が感ｆＪＪ電流値を超えると、ブレーク接点Ｂ、お
よびＢ、がオフになって制御部Ｗ、の接続が切離される
。また、制御部ＷＩ およびＷ３を流れる電流が感ｒＩ
Ｉｈ電流値を超えると制御部Ｗ、の接続が切離され、制
御部Ｗ１ζよｆ、い已の電流が感動′ｅｌ流値を超える
と制御部Ｗ、の接ド・が切離される。The control units W1 and W! It has a nine-delta connection between them, and is connected to all of the control units W to Ws when the power is not energized. When energized, the control unit W! When the current flowing through F and Wl exceeds the current value fJJ, break contacts B and B are turned off and the connection of control unit W is severed. Also, the current flowing through the control units WI and W3 is
When the current value Ih exceeds the current value, the connection of the control section W is disconnected, and when the current of the control sections W1ζ to f exceeds the current value of the control section W, the connection of the control section W is disconnected.
切替回路Ｓ、は、端子１１と端子Ｇとの間に接続されて
おり、メーク接点Ｍ！およびＭ、を直列接続した回路で
ある。従って切替回路Ｓ１は、無通電時はけ端子１１を
接地せず、通電時に制御部Ｗ２およびＷ３を流れる電流
が感動電流値を超えると端子１１を接地する。切替回路
Ｓ２は、端子１２と端子Ｇとの間にメーク接点Ｍ、を接
続した回路であり、制御部Ｗ３を流れる電流が感動電流
値を超えると端子１２を接地する。また切替回路Ｓ、は
、端子１３と端子Ｇとの間にメーク接点Ｍ１およびＭ、
を直列接続した回路であり、制御部Ｗ。The switching circuit S, is connected between the terminal 11 and the terminal G, and the make contact M! and M are connected in series. Therefore, the switching circuit S1 does not ground the bare terminal 11 when no current is applied, but grounds the terminal 11 when the current flowing through the control units W2 and W3 exceeds the sensing current value when the current is applied. The switching circuit S2 is a circuit in which a make contact M is connected between the terminal 12 and the terminal G, and the terminal 12 is grounded when the current flowing through the control section W3 exceeds the touching current value. In addition, the switching circuit S has make contacts M1 and M between the terminal 13 and the terminal G,
It is a circuit in which the controller W is connected in series.
およびＷ！の電流が感動電流値を超えると端子１３を接
地する。and W! When the current exceeds the current value, the terminal 13 is grounded.
以下に、本実施例の回路を使用して、三周間での給電起
動、および三つの枝路のうちの一枝路で給電障害が発生
した場合における残りの二枝路での給電起動を行う際の
操作手順について説明する。The circuit of this example will be used below to start power supply for three cycles, and to start power supply in the remaining two branches when a power supply failure occurs in one of the three branches. The following describes the operating procedure.
第２図は本実施例の回路を介した三周間の給電系統の接
続を例示するブロック図である。本図は′で７図の場合
と同様に、Ａ局およびＢ局間で両端給電を行い、０局で
片端給電を行う場合を示す。FIG. 2 is a block diagram illustrating the connection of the power supply system for three circuits via the circuit of this embodiment. In this figure, as in the case of Fig. 7, ' is a case in which power is supplied at both ends between stations A and B, and power is supplied at one end at station 0.
Ａ局の給電装置２人から負荷３人を介して分岐装置へ導
かｎだ給電線は、給電路分岐回路１の端子１１に接続し
ている。また、Ｂ局の給電装置２Ｂから負荷３Ｂを介し
て導かｎた給電線は端子１２に接続し、０局の給電装置
２Ｃから負荷３Ｃを介して導かｎた給電線は端子１３に
接続しである。The n power feed lines that are led from the two power feed devices of the A station to the branch device via the three loads are connected to the terminal 11 of the power feed branch circuit 1. Also, the feeder line led from the power feeder 2B of the B station via the load 3B is connected to the terminal 12, and the feeder line led from the power feeder 2C of the 0th station via the load 3C is connected to the terminal 13. be.
給電装置２Ａ、２Ｂおよび２Ｃはいずれも同じ回路構成
を有し、直流を直交流変換回路２１で交流に変換し、変
圧器Ｔで昇圧したあとダイオードＤから成る整流回路で
整流して、更に平滑回路２２で平滑した直流電流を給電
線に送出する。なおブロック内の実線矢印は、この直流
を送出する向きを示す。端子Ｇは海中で接地接続される
。The power supply devices 2A, 2B, and 2C all have the same circuit configuration, and convert direct current into alternating current with a DC/AC conversion circuit 21, step up the voltage with a transformer T, rectify it with a rectifier circuit consisting of a diode D, and further smooth it. The DC current smoothed by the circuit 22 is sent to the power supply line. Note that the solid arrow inside the block indicates the direction in which this direct current is sent. Terminal G is connected to ground underwater.
無通電時に、切替回路Ｓｏは制御部Ｗ１ないしＷｓをす
べて接続しているオン状態であり、また切替回路Ｓ、、
Ｓ、およびＳｓはいずれもオフ状態である。従って、給
電装置２Ａ、２Ｂおよび２Ｃを切離すと、各枝路を接地
から絶縁することができ、中継伝送路の絶縁抵抗試験や
耐圧試験を行うのが可能である。When no power is applied, the switching circuit So is in an on state connecting all the control units W1 to Ws, and the switching circuits S,...
Both S and Ss are in the off state. Therefore, by disconnecting the power supply devices 2A, 2B, and 2C, each branch line can be insulated from the ground, and it is possible to perform an insulation resistance test and a withstand voltage test on the relay transmission line.
第３図は、第２図に示す接続で給電起動する場合の動作
を説明するためのブロック図である、同図では、切替回
路ＳｏないしＳａを簡略化して図示しである。切替回路
ＳｏのスイッチＳＡ、ＳＲおよびＳＣは、無通電時にい
ずｎもオン状態である。スイッチＳＡは、制御部Ｗ２お
よびＷｓの感動時にオフ状態へ切替わる１、スイッチＳ
Ｒは、制御部Ｗ１およびＷＳの感動時にオフ状態へ切替
わる。またスイッチＳＣは、制御部Ｗ１およびＷ。FIG. 3 is a block diagram for explaining the operation when power supply is started using the connections shown in FIG. 2. In the same figure, the switching circuits So to Sa are shown in a simplified manner. The switches SA, SR, and SC of the switching circuit So are all in an on state when no current is applied. The switch SA is switched to the OFF state when the control units W2 and Ws are touched.
R is switched to the off state when the control units W1 and WS are impressed. Further, the switch SC includes control units W1 and W.
の感動時にオフ状態へ切替わる。すなわち本図の切替回
路Ｓ０は、第１図の場合と同じ機能をもち、且つ制御部
Ｗ、ないしＷＳのそれぞれの接続の有無を見易くして示
しである。切替回路Ｓ、ないしＳ、は、そ１ぞれ第１°
図の場合と同じ機能をもつ単一スイッチに簡略化して示
しである。Switches to OFF state when touched. That is, the switching circuit S0 in this figure has the same function as that in FIG. 1, and is shown to make it easier to see whether or not each of the control units W and WS is connected. The switching circuits S and S are respectively 1°
It is simplified to a single switch with the same function as in the figure.
給電起動時には、まず給電ｄ置２人だけを起動させる。When power supply is started, first only the two people in the power supply position are started.
これに伴りて給電袋＃２Ｂおよび２ＣのダイオードＤ（
第２図参照）は、順方向の電圧が印加されるので、導通
状態にな襲、制御部Ｗ１を通ったあと制御部Ｗ、および
Ｗｓに分流する電流が流れ始める。この電流をリレーの
感−動電流値工８まで増やすと、制御部Ｗ！に流ｎる電
流が感動電流値工３に達するが、制御部Ｗ、およびＷｓ
に分流する電流はいずれも感動電流値Ｉｓに達せず、従
って切替回路ＳｏないしＳｓはいずれも切替わらない。Along with this, the diodes D (
(see FIG. 2) enters a conductive state as a forward voltage is applied, and a current begins to flow after passing through the control section W1 and then being shunted to the control sections W and Ws. When this current is increased to the relay's sensing current value 8, the control unit W! The current flowing through n reaches the moving current value controller 3, but the control unit W and Ws
None of the currents that are shunted to reach the impressive current value Is, and therefore, none of the switching circuits So to Ss is switched.
次に給電袋＊２Ａの送出ｔＲ，値を工３に保ったまま、
給電装置２Ｂを起動して送出電流値をＩｓまで増やして
いく。これに伴って制御部Ｗ３の゛直流が減少していく
。こルがゼロになった時、制御部Ｗ１およびＷＳの電流
がいずれも感動電流値ＩｓになロスイッチＳｃがオフ状
態になり制御部Ｗ、の接続が切離さｎたあと、切替回路
Ｓｓがオン状態になり端子１３が接地接続さｎる。すな
わち、給電路分岐回路ｌ内で、端子１１および１２間の
接続は保持されたまま、端子１３が端子１１および１２
との接続を切離さｎて接続に切替わり、Ａ局およびＢ局
間で両端給電し且つ０局で片端給電するだめの給電路が
形成される。Next, while keeping the output tR of the power supply bag *2A at 3,
The power supply device 2B is activated and the sending current value is increased to Is. Along with this, the direct current of the control section W3 decreases. When this becomes zero, the currents in the control sections W1 and WS both reach the moving current value Is, the switch Sc turns off, and the connection between the control section W and the control section W is disconnected. It turns on and the terminal 13 is connected to ground. That is, within the feeder branch circuit l, the terminal 13 is connected to the terminals 11 and 12 while the connection between the terminals 11 and 12 is maintained.
The connection is disconnected from the station A and station B, and a power supply path is formed in which power is supplied at both ends between the A station and the B station, and power is supplied at one end at the 0 station.
仁のあと続けて給電装置ｔ２Ａおよび２Ｃの送出電流を
給電定格電流値まで増やしてＡ局およびＢ局間の両端給
電を行う。また給電袋［２０を起動して０局での片端給
電を行う。Subsequently, the sending currents of the power supply devices t2A and t2C are increased to the power supply rated current value, and power is supplied at both ends between the A station and the B station. In addition, the power supply bag [20 is activated to perform one-end power supply at station 0.
第４図は、第２図に示す接続でＡ局および分岐装置間の
枝路の途中で給電線が接地と短絡する給電障害を生じた
際に、Ｂ局および０局で給電起動する場合の動作を説明
するためのブロック図である。同図でも、第３図と同様
に、切替回路ＳｏないしＳｓを簡略化して図示しである
。給電障害発生時には、給電装置２Ａ、２Ｂおよび２Ｃ
の給電を一旦停止したあと、極性を反転して接続した給
電装置２Ｂｔ−起動して、その送出電流値をＩ ｓ／２
まで増やす。、この電流は、制御部Ｗ２を通ったあと制
御部ＷＩおよびＷ、に分流する。この時に制御部Ｗ、な
いしＷ、にｆｒｆ、２１．る′直流はいず１も感動電流
値Ｉｓ以下であるから、どのリレーも感動せず、従って
切替回路Ｓ０ないしＳ３はいずｎも切替わらない。次に
給電装置２Ｂの送出電流値をＩｓ／２に保りたまま、給
電装置２Ｃを起動して送出電流値をＩｓまで増やしてい
く。制御部Ｗ３の電流値がＩｓに達すると、切替回路Ｓ
、がオン状態に切替わゆ端子１２が接地接続さｎる。（
制御部Ｗ。Figure 4 shows the connection shown in Figure 2 when power supply is activated at stations B and 0 when a power supply fault occurs in which the power supply line is shorted to ground in the middle of the branch between A station and the branch device. FIG. 2 is a block diagram for explaining the operation. Similarly to FIG. 3, the switching circuits So to Ss are shown in a simplified manner in this figure as well. In the event of a power supply failure, power supply devices 2A, 2B, and 2C
After temporarily stopping the power supply, start the connected power supply device 2Bt with the polarity reversed, and change the sending current value to I s/2
increase to , this current is divided into the control parts WI and W after passing through the control part W2. At this time, frf is sent to the control unit W, or 21. Since all of the DC currents are less than the sensing current value Is, none of the relays is touched, and therefore none of the switching circuits S0 to S3 are switched. Next, while keeping the sending current value of the power feeding device 2B at Is/2, the power feeding device 2C is activated and the sending current value is increased to Is. When the current value of the control unit W3 reaches Is, the switching circuit S
, is switched to the on state, and the terminal 12 is connected to ground. (
Control unit W.
の電流値がＩｓに達する直前までの間、制御部Ｗ。The control unit W until just before the current value reaches Is.
およびＷＳの電流値はいずれもＩｓ以下である。）端子
１２が接地接続さｎると、制御部Ｗ、に電流を殆んど流
さずにＢ局および０局で片端給電できる接続状態になる
。このあと、給電装置２Ｃの送出電流値を工８に保った
まま、給電装置２Ｂを一旦給電停止したあと極性を元に
戻し接続してから起動させ（ただし負荷３Ｂが両方向給
電可能であ几ば、この給電装置２Ｂに対する操作は不要
である）、送出電流をＩｓまで増やす。こｎに伴って制
御４ＷｔおよびＷ、に流れる電流値が工３に達し、スイ
ッチＳＡがオフ状態に切替わ口制御部Ｗ。The current values of WS and WS are both equal to or less than Is. ) When the terminal 12 is connected to ground, a connection state is established in which power can be supplied at one end from the B station and the 0 station with almost no current flowing through the control unit W. After this, while keeping the output current value of the power supply device 2C at 8, power supply to the power supply device 2B is temporarily stopped, the polarity is returned to the original state, and the connection is started. , no operation is required for this power supply device 2B), and the sending current is increased to Is. As a result, the current value flowing through the controls 4Wt and W reaches 4, and the switch SA is turned off.
の接続が切峡さｎたあと、切替回路Ｓ、がオン状態に切
替わり端子１１を接地接続する。すなわち、給電路分岐
回路１内で端子１２および１３間の接続は保持さ几たま
ま端子１２が接地接続さｎると共に、端子１１が端子１
２および１３との接続を切離されて接地接続に切替わ９
、Ｂ局および０局でそ几ぞれ片端給電するための給電路
が形成される。After the connection is made, the switching circuit S is turned on and connects the terminal 11 to ground. That is, the connection between terminals 12 and 13 is maintained within the feeder branch circuit 1, and terminal 12 is grounded, and terminal 11 is connected to terminal 1.
9 is disconnected from 2 and 13 and switched to ground connection.
, B station, and 0 station, a power feeding path is formed for feeding power to one end of each of the stations.
このあと続けて給電装置２Ｂおよび２Ｃの送出電流をそ
れぞれ定格電流値まで増やしてＢ局および０局で片端給
電を行う。なお、端子１１が接地接続さｎているから、
上述の給電を開始したあとでも、障害を生じた枝路の給
電線に高電圧が印加されることは無く、障害箇所の修理
を安全に行うことができる。Thereafter, the sending currents of the power supply devices 2B and 2C are increased to their respective rated current values, and one-end power supply is performed at the B station and the 0 station. Note that since terminal 11 is connected to ground,
Even after the above-mentioned power supply is started, high voltage is not applied to the power supply line of the branch where the fault has occurred, and the fault can be repaired safely.
なお、Ａ局および分岐装置間の途中で給電線が地絡せず
開放状態になる給電障害を生じた場合には、第４図に示
す接続で給電装置２Ｂおよび２Ｃの送出電流値を共にＩ
ｓまで増やしていくことにより、給電路分岐回路１内で
上述の場合と同じ給電路を形成できる。In addition, if a power supply fault occurs in which the power supply line is open without a ground fault between the A station and the branch device, the sending current values of power supply devices 2B and 2C can be changed to I by the connection shown in Fig. 4.
By increasing the number to s, it is possible to form the same feed path as in the above case within the feed path branch circuit 1.
第５図は、０局および分岐装置間の枝路の途中で給″ｒ
ｉ！、線が地絡する給電障害を生じた際に、Ａ局および
Ｂ局で給電超勤する場合の動作を説明するためのブロッ
ク図である。同図でも切替回路Ｓ０ないしＳｌを簡略化
して図示しである。給電起動時には、まず給電装置２Ｂ
を起動させ、その送出電流値をＩｓ／２１で増やす。こ
の時には、どのリレーも感動しない。次に給電装置２Ｂ
の送出電流値を工８／２に保ったまま、給電装置ｆ＆２
Ａを起動して送出電流値をＩａまで増やしていく。この
時に、制御部Ｗ１の通過電流値だけが工３に達する。こ
のあと、給電装！２Ｂの送出電流値をＩ８／２からＩｓ
まで増やしていくと、制御部Ｗ１およびＷ。Figure 5 shows the supply of "r" on the branch path between the
i! FIG. 2 is a block diagram illustrating an operation when station A and station B perform overtime power supply when a power supply failure occurs in which a line is grounded. In the same figure, the switching circuits S0 to S1 are shown in a simplified manner. When starting power supply, first power supply device 2B
is activated and its sending current value is increased by Is/21. At this time, none of the relays are impressed. Next, power supply device 2B
While keeping the sending current value of f&2 at f&2,
Start A and increase the sending current value to Ia. At this time, only the passing current value of the control unit W1 reaches step 3. After this, power supply equipment! 2B sending current value from I8/2 to Is
When increasing the number of controllers W1 and W.
の各通過電流値が工３に適した時に、制御部Ｗ３に電流
が流れなくなり、スイッチＳｃがオフ状態に切替わり制
御部Ｗｓの接続を切離したあと、切替回路Ｓ３がオン状
態に切替わり端子１３を接地接続する。すなわち、Ａ局
およびＢ局間で両端給電するための給電路が形成される
と共に、障害を生じた枝路が接地接続される。When each passing current value is suitable for the terminal 3, no current flows to the control unit W3, the switch Sc is switched to the OFF state and the connection of the control unit Ws is disconnected, and then the switching circuit S3 is switched to the ON state and the terminal Connect 13 to ground. That is, a power supply path for feeding power at both ends is formed between the A station and the B station, and the branch path where the fault has occurred is grounded.
なお、Ｂ局および分岐装置間の途中で給１ｉｔ線が地絡
せず開放状態になる給電障害を生じた場合も、上述と同
様な起動操作を行うことにより、Ａ局およびＣ局間で両
端給電するための給電路を形成できる。In addition, even if a power supply failure occurs in which the feed 1it line is open without a ground fault between the B station and the branch device, by performing the same startup operation as described above, the power supply line between both ends of the A and C stations can be disconnected. A power supply path for power supply can be formed.
以上に説明したごとく、各陸上端局および分岐装置間の
三つの枝路のうちの一つに障害が発生した場合でも、本
実施例の回路を使用して端局で給電の起動操作を行うこ
とにより、残りの二つの枝路を介した通信を再開するよ
うに給電路を形成することができる。As explained above, even if a failure occurs in one of the three branch lines between each land terminal station and branch device, the circuit of this embodiment can be used to start the power supply at the terminal station. By doing so, the power supply path can be formed so as to resume communication via the remaining two branch paths.
第６図（ａ）および（ｂ）は、制御部Ｗ！、Ｗ、あるい
はＷｓの一構成例を示す回路図であり、す１／−の電磁
石励磁用コイルに流れる電流を軽減してリレーの小形化
および信頼性向上を図るための構成例を示す。同図（＆
）は、励磁用コイルに並列に、ツェナーダイオードＺＤ
を互いに逆極性に直列接続した定電圧回路を、接続した
回路である。励磁用コイルを流ｎる電流が、そのリレー
の感動電流以上で設定した値に達すると、コイル両端の
電圧はそれ以上に上昇せず、感動電流値を大幅に超える
電流がコイルに流れるのを防止できる。制御回路Ｗ２の
励磁用コイルでは、給電起動時に流れる電流の向きは一
方向に限定されておらず、いずれの方向の電流に対して
も定電圧特性が得られるようツェナーダイオードＺＤを
逆極性で直列接続しておく。FIGS. 6(a) and 6(b) show the control unit W! , W, or Ws, and shows a configuration example for reducing the current flowing through the electromagnet excitation coil of S1/- to reduce the size of the relay and improve reliability. Same figure (&
) is a Zener diode ZD in parallel with the excitation coil.
This is a circuit in which constant voltage circuits are connected in series with opposite polarities. When the current flowing through the excitation coil reaches the set value, which is higher than the excitation current of the relay, the voltage across the coil will not rise any further, and a current that significantly exceeds the excitation current value will not flow through the coil. It can be prevented. In the excitation coil of the control circuit W2, the direction of the current flowing at the time of power supply startup is not limited to one direction, and a Zener diode ZD is connected in series with opposite polarity so that constant voltage characteristics can be obtained for current in either direction. Keep it connected.
同図の）は、励磁用コイルに並列に、ツェナーダイオー
ドＺＤを定電圧回路として、接続した回路である。制御
回路Ｗｔ （あるいはＷｓ ）の励磁用コイルでは
、給電起動時に流詐る電流の向きを一方向に限定し得る
ので、その方向の電流に対してのみ定電圧特性が得られ
れば、感動電流値を大幅に超えるｉｌＪ流がコイルに流
れるのを防止できる。) in the figure is a circuit in which a Zener diode ZD is connected as a constant voltage circuit in parallel to the excitation coil. In the excitation coil of the control circuit Wt (or Ws), it is possible to limit the direction of the current that flows during power supply startup to one direction, so if constant voltage characteristics can be obtained only for the current in that direction, the impressive current value It is possible to prevent an ilJ current that significantly exceeds the current from flowing into the coil.
このように定電圧回路を励磁用コイルに並列接続するこ
とにより、給電起動時に感動電流値以上の電流が流れる
励磁用コイルに対し、感動電流値を大幅に超える電流が
流れることを防止でき、リレーの小形化および信頼性向
上を達成できる。By connecting the constant voltage circuit in parallel to the excitation coil in this way, it is possible to prevent a current that significantly exceeds the excitation current value from flowing to the excitation coil, through which a current exceeding the excitation current value flows at the time of power supply startup, and to prevent the relay from flowing. It is possible to achieve smaller size and improved reliability.
第１図に示した実施例において、各リレーの動作の信頼
度を向上するには、制御部Ｗ１ないしＷ３とその通過電
流に応動するメーク接点Ｍ１ないしＭｓおよびブレーク
接点Ｂ１ないしＢＳとのうち、必要な箇所を周知の冗長
系で構成して、複数個の構成素子から成る冗長系のうち
の一部分の素子に故障が発生しても冗長系としては所望
の動作を行うようにすれば良い。In the embodiment shown in FIG. 1, in order to improve the reliability of the operation of each relay, among the control units W1 to W3, the make contacts M1 to Ms and the break contacts B1 to BS that respond to the passing current, Necessary parts may be configured with a well-known redundant system so that even if a failure occurs in some elements of the redundant system made up of a plurality of components, the redundant system can perform the desired operation.
以上に説明したように本発明には、陸上端局での給電起
動操作に応じて給電ルートを切替える手段を設けること
により、各陸上端局および分岐装置間の三つの枝路のう
ちの一つに障害が発生した場合にも残りの二つの枝路を
介した通信が可能であり、且つ各枝路を接地から絶縁し
得る給電路分岐回路を実現できるという効果かある。As explained above, in the present invention, by providing a means for switching the power supply route according to the power supply activation operation at the land terminal station, one of the three branch routes between each land terminal station and the branching device can be switched. Even if a failure occurs in the two branches, communication is possible via the remaining two branches, and it is possible to realize a feeder branch circuit that can isolate each branch from the ground.
第１図および第６図（ａ） 、 （ｂ）は本発明の実施
例を示す回路図、＠２図ないし第５図は本発明の実施例
を示すブ筒ツク図、第７図は従来の給電路分岐法を説明
するためのブ四ツク図である。
ｌ・・・・・・給電路分岐回路、Ｗ、、Ｗ３・・・・・
・制御部、Ｓ、−Ｓ、・・・・・・切替回路、Ｍ、 、
Ｍｓ・・・・・・メーク接点、Ｂ１〜Ｂ、・・・・・
・ブレーク接点、１１〜１３．Ｇ・・・・・・端子、２
Ａ、２Ｂ、２Ｃ・・・・・・給電装置、３Ａ、３Ｂ、３
Ｃ・・・・・・負荷、ｚＤ・・・・・・ツェナーダイオ
ード、４・・・・・・分岐装置。
代理人 弁理士 内 原 晋
茅 １ 図
第 ２ 図
第 ３ 図
卒 ４− 薗
＊ｓｍFigures 1 and 6 (a) and (b) are circuit diagrams showing an embodiment of the present invention, Figures 2 to 5 are block diagrams showing an embodiment of the present invention, and Figure 7 is a conventional circuit diagram. FIG. 4 is a block diagram for explaining a power supply path branching method. l...Feed line branch circuit, W,, W3...
・Control unit, S, -S,...Switching circuit, M, ,
Ms...Make contact, B1~B,...
・Break contacts, 11-13. G...Terminal, 2
A, 2B, 2C...Power supply device, 3A, 3B, 3
C... Load, zD... Zener diode, 4... Branch device. Agent Patent Attorney Shinkyo Uchihara 1 Figure 2 Figure 3 Figure Graduate 4- Sono*sm
Claims (2)
び第３の外部端子と、 接地接続するための第４の外部端子と、 通過電流に応答して接続状態を制御するための第２のコ
イルを有し前記第２の外部端子および第２の内部端子間
に接続した第２の制御手段と、 通過電流に応答して接続状態を制御するための第３のコ
イルを有し前記第３の外部端子および第のの内部端子間
に接続した第３の制御手段と、 前記第１および第４の外部端子間に接続してあり前記第
２および第３のコイルの無通電時に両端間がオフ状態で
ありまた該両コイルに所定の電流値以上の電流が流れた
時に両端間がオン状態に切替わる第１の切替手段と、 前記第２および第４の外部端子間に接続してあり前記第
３のコイルの無通電時に両端間がオフ状態でありまた該
コイルに所定の電流値以上の電流が流れた時に両端間が
オン状態に切替わる第２の切替手段と、 前記第３および第４の外部端子間に接続してあり前記第
１および第２のコイルの無通電時に両端間がオフ状態で
ありまた該両コイルに所定の電流値以上の電流が流れた
時に両端間がオン状態に切替わる第３の切替手段と、 前記第１ないし第３の内部端子間に接続してあり前記第
１ないし第３のコイルの無通電時に該第１ないし第３の
内部端子間は全てオン状態であり、該第２および第３の
コイルに所定の電流値以上の電流が流れた時に該第１の
内部端子が該第２および第３の内部端子に対しオフ状態
に切替わり、該第１および第３のコイルに所定の電流値
以上の電流が流れた時に該第２の内部端子が該第１およ
び第３の内部端子に対しオフ状態に切替わり、また該第
１および第２のコイルに所定の電流値以上の電流が流れ
た時に該第３の内部端子が該第１および第２の内部端子
に対しオフ状態に切替わる第４の切替手段とを、備えた
ことを特徴とする給電路分岐回路。(1) First, second, and third external terminals for connecting the power supply lines, respectively, a fourth external terminal for grounding, and a fourth external terminal for controlling the connection state in response to passing current. a second control means having two coils and connected between the second external terminal and the second internal terminal; and a third coil for controlling the connection state in response to the passing current. a third control means connected between a third external terminal and a third internal terminal; and a third control means connected between the first and fourth external terminals, both ends of which are connected when the second and third coils are not energized. a first switching means that switches the terminals to the on state when the coils are in the off state and a current equal to or higher than a predetermined current value flows through both the coils; and the second and fourth external terminals. a second switching means that is in an OFF state between both ends when the third coil is not energized, and is switched to an ON state between both ends when a current of a predetermined current value or more flows through the third coil; 3 and a fourth external terminal, and when the first and second coils are not energized, the terminals are in the OFF state, and when a current of a predetermined current value or more flows through the coils, the terminals are connected between the terminals. is connected between the first to third internal terminals, and the first to third internal terminals are connected to each other when the first to third coils are not energized. are all in the on state, and when a current equal to or higher than a predetermined current value flows through the second and third coils, the first internal terminal switches to the off state with respect to the second and third internal terminals. , when a current equal to or higher than a predetermined current value flows through the first and third coils, the second internal terminal is switched to an OFF state with respect to the first and third internal terminals, and the first and third internal terminals are turned off. and fourth switching means for switching the third internal terminal to an OFF state with respect to the first and second internal terminals when a current equal to or higher than a predetermined current value flows through the second coil. A feeder branch circuit featuring:
つに定電圧回路を並列接続した特許請求の範囲（１）項
記載の給電路分岐回路。(2) The feed line branch circuit according to claim (1), wherein a constant voltage circuit is connected in parallel to at least one of the first to third coils.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4110486A JPS62198228A (en) | 1986-02-25 | 1986-02-25 | Feeder branching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4110486A JPS62198228A (en) | 1986-02-25 | 1986-02-25 | Feeder branching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62198228A true JPS62198228A (en) | 1987-09-01 |
Family
ID=12599168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4110486A Pending JPS62198228A (en) | 1986-02-25 | 1986-02-25 | Feeder branching circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62198228A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01202035A (en) * | 1988-02-08 | 1989-08-15 | Nippon Telegr & Teleph Corp <Ntt> | Power supply system for submarine branch cable |
-
1986
- 1986-02-25 JP JP4110486A patent/JPS62198228A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01202035A (en) * | 1988-02-08 | 1989-08-15 | Nippon Telegr & Teleph Corp <Ntt> | Power supply system for submarine branch cable |
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