JPH01200832A - Power suppling line switching circuit for underwater branching device - Google Patents
Power suppling line switching circuit for underwater branching deviceInfo
- Publication number
- JPH01200832A JPH01200832A JP2543288A JP2543288A JPH01200832A JP H01200832 A JPH01200832 A JP H01200832A JP 2543288 A JP2543288 A JP 2543288A JP 2543288 A JP2543288 A JP 2543288A JP H01200832 A JPH01200832 A JP H01200832A
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- Prior art keywords
- power
- power supply
- landing
- branching device
- line
- 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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- 230000003287 optical effect Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000013535 sea water Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 7
- 239000013307 optical fiber Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008054 signal transmission Effects 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】
［ｉａ要］
光海底ケーブルにより３以上の陸揚局が海中分岐装置に
より相互に接続して光海底ケーブル伝送を行う際に中継
器用の電源を供給する給電路の切替回路に関し、
海中分岐装置と複数の陸揚局とを結ぶ複数の海底ケーブ
ルの何れの障害に対しても他の正常な海底ケーブルの給
電路を介して給電を可能にする海中分岐装置の給電路切
替回路を提供することを目的とし、
３以上の多数の陸揚局に接続された光海底ケーブルの伝
送路と給電路とを分岐接続するために設けられた海中分
岐装置の給電路切替回路において、特定の陸揚局に接続
された１つの給電路端子と他の各局に接続された給電路
端子との間にそれぞれ切替リレーを設け、各切替リレー
の動作時に閉結する接点を並列に接続して一端を前記１
つの給電路端子に、他端を海底アースに接続し、全ての
給電路は無給電時に海水から絶縁され、２つの陸揚局か
ら給電をかけることにより前記複数の切替リレーの中の
１つを動作させて前記１つの給電路端子を接地して他の
各陸揚局からは片端給電で各給電路に給電するよう構成
する。[Detailed description of the invention] [IA required] Switching of a power supply line that supplies power for a repeater when three or more landing stations are connected to each other by an underwater branching device and optical submarine cable transmission is performed using an optical submarine cable. Regarding the circuit, a power supply line for an underwater branching device that enables power to be supplied via the power supply line of other normal submarine cables in the event of a failure in any of the multiple submarine cables connecting the underwater branching device and a plurality of landing stations. For the purpose of providing a switching circuit, in a power supply line switching circuit of an underwater branching device installed to branch and connect a transmission line and a power supply line of an optical submarine cable connected to three or more landing stations. , a switching relay is provided between one feed line terminal connected to a specific landing station and a feed line terminal connected to each other station, and the contacts that close when each switching relay operates are connected in parallel. and one end as above 1
One feed line terminal is connected to the seabed earth at the other end, all feed lines are insulated from seawater when no power is being supplied, and one of the plurality of switching relays is connected by applying power from two landing stations. When operated, the one power supply line terminal is grounded, and power is supplied from each other landing station to each power supply line by one end feeding.
［帝業上の利用分野］
本発明は光海底ケーブルにより３以上の陸揚局が海中分
岐装置により相互に接続して光海底ケーブル伝送を行う
際に中継器用の電源を供給する給電路の切替回路に関す
る。[Field of practical application] The present invention is for switching the power supply line that supplies power for repeaters when three or more landing stations are connected to each other by an underwater branching device and optical submarine cable transmission is performed using an optical submarine cable. Regarding circuits.
近年、海底ケーブルを介する通信の需要が増大しており
、従来の同軸ケーブルを用いた海底ケーブルだけでは通
信量が限られるので光海底ケーブルを敷設する方式が採
用されつつある。In recent years, the demand for communication via submarine cables has increased, and because the amount of communication is limited by conventional submarine cables using coaxial cables, a method of laying optical submarine cables is being adopted.
ただし、この光海底ケーブルの場合、光ファイバを光書
が伝送する際の減衰が伴うので増幅するための中継器を
一定の距離毎に設置する必要がある。その中継器を動作
させるための給電路が光ケーブルに内蔵されており、−
緒に敷設される。However, in the case of this optical submarine cable, there is attenuation when optical books are transmitted through optical fibers, so it is necessary to install repeaters for amplification at certain distances. The power supply path for operating the repeater is built into the optical cable, and -
laid together.
そして、伝送路（光ファイバ）を多数の陸揚局間で分岐
（分路）するために海中分岐装置が設けられ、その海中
分岐装置において給電路も分岐接続され、各伝送路の中
継器に給電を行なう。Then, an underwater branching device is installed to branch the transmission line (optical fiber) between a large number of landing stations, and the power supply line is also branched and connected in the underwater branching device, and connected to the repeater of each transmission line. Supply power.
ところが、海底ケーブルは船の錨、トロール漁船による
底引網や海底の変動等の種々の原因でケーブルが損傷す
る場合があり、それらの複数の陸揚局のうち何れか１つ
と海中分岐装置間の伝送路が切断された場合、給電路も
切れて給電が停止する。However, submarine cables can be damaged by various causes such as a ship's anchor, bottom trawling by a fishing trawler, or changes in the ocean floor. If the transmission line is disconnected, the power supply line will also be disconnected and the power supply will stop.
その場合、他の損傷を受けてないケーブルに接続された
陸揚局間での通信を海中分岐装置を介して再開する必要
があり、その際に損傷を受けたケーブルの位置に関係な
（他の正常なケーブルの給電路により給電を再開するこ
とが望まれている。In that case, communication between landing stations connected to other undamaged cables must be re-established via the subsea branching equipment, and the It is hoped that the power supply will be resumed through the normal cable power supply path.
［従来の技術］ 第４図に従来例の説明図を示す。[Conventional technology] FIG. 4 shows an explanatory diagram of a conventional example.
第４図のイ、に示す従来例の構成において、Ａ、Ｂ、Ｃ
はそれぞれ陸揚局を表し、４０は海中分岐装置、４０１
．４０２はそれぞれリレーＲＬＢ。In the conventional configuration shown in FIG. 4A, A, B, C
respectively represent landing stations, 40 is an underwater branching device, 401
．． 402 are relay RLBs.
ＲＬＣ，ｂＬ ｂ２およびＣ１，Ｃ２は夫々リレーＲＬ
Ｂ、ＲＬＣにより駆動される接点で、「−」の表示は常
閉接点（駆動により開く接点）、「×」の表示は常閉接
点（駆動により閉じる接点）を表す。RLC, bL b2 and C1, C2 are each relay RL
B. A contact driven by RLC, where the symbol "-" indicates a normally closed contact (a contact that opens when driven), and the symbol "x" indicates a normally closed contact (a contact that closes when driven).
なお、この第４図のイ、には海中分岐装置の中の給電路
切替回路の構成だけを示し、伝送路の分岐回路の構成は
省略した。Note that FIG. 4A shows only the configuration of the power supply line switching circuit in the underwater branching device, and the configuration of the branch circuit of the transmission line is omitted.
実際の海底ケーブルは信号伝送用の光ファイバの束と中
継器への電源供給用の給電路（銅線）が含まれているが
、図には給電路４１１．４２１１４３１だけを示す。Although an actual submarine cable includes a bundle of optical fibers for signal transmission and a power feed line (copper wire) for supplying power to the repeaters, only the power feed line 411.4211431 is shown in the figure.
動作を説明すると、初めに陸揚局Ａにおいて給電極性を
プラスにして給電路４１１に給電し、陸揚局Ｂにおいて
給電極性をマイナスにして給電をかけると、陸揚局Ａ、
Ｂ間の給電路には予め設定された定電流が流れて、リレ
ーＲＬＢが駆動される。To explain the operation, first, landing station A makes the feeding polarity positive and feeds power to the power feed line 411, and landing station B makes the feeding polarity negative and feeds power, then landing station A,
A preset constant current flows through the power supply path between B and drives relay RLB.
リレーＲＬＢの動作により接点ｂ１が閉じ、接点ｂ２が
開（ので、海中分岐装置４０内で陸揚局Ｃに接続する給
電路４３１は接点ｂ１を介して海中接地される。The operation of the relay RLB closes the contact b1 and opens the contact b2 (therefore, the power supply path 431 connected to the landing station C in the underwater branching device 40 is grounded underwater via the contact b1).
この状態で陸揚局Ｃにおいて給電極性をマイナスにして
給電をかけると、給電路４３１に定電流が流れその海底
ケーブルに設けられた中継器に電源を供給する。このよ
うに、陸揚局Ａ、Ｂ間は両端給電を行い、陸揚局Ｃは片
端給電を行って給電路が形成される。In this state, when the landing station C sets the power supply polarity to negative and supplies power, a constant current flows through the power supply line 431 and supplies power to the repeater provided on the submarine cable. In this way, a power supply path is formed between the landing stations A and B by feeding power at both ends and by feeding power at one end at the landing station C.
この状態において、第４図の口、に示すように給電路４
２１ （陸揚局Ｂと海中分岐装置４０の間）を含む海底
ケーブルに障害（船の錨、底引き網等による）が発生し
て、給電路４２１が切断するとリレーＲＬＢが駆動され
なくなって、復旧する。すると、陸揚局Ｃの給電路４３
１の接地ルートがなくなって中継器への正常な給電がで
きなくなる。In this state, the power supply line 4 is
21 (between the landing station B and the underwater branching device 40) occurs (due to a ship's anchor, a bottom trawling net, etc.) and the power supply line 421 is cut off, the relay RLB is no longer driven and the system is restored. . Then, the power supply line 43 of landing station C
No. 1 grounding route is lost, making it impossible to properly supply power to the repeater.
この場合、第４図の口、に示すように障害が発生した陸
揚局Ｂと海中分岐装置４０間の海底ケーブルは使用でき
ないので、−旦全ての陸揚局は給電を止めたあと、陸揚
局Ａから給電極性をプラスにして給電をかけ、陸揚局Ｃ
から給電極性をマイナスにして給電をかけると、リレー
ＲＬＣが駆動されて、その接点Ｃ１が閉じ、Ｃ２が開り
、シかし、これらの接点は何ら影響を与えず陸揚局Ａと
陸揚局Ｃとは給電路４１１と４３１を通じて給電路が形
成される。In this case, as shown at the beginning of Fig. 4, the submarine cable between the landing station B where the fault has occurred and the underwater branching device 40 cannot be used. Apply power from landing station A with positive polarity, and then transfer to landing station C.
When power is applied with the supply polarity set to negative, relay RLC is driven, its contacts C1 close and C2 open. A power supply path is formed with station C through power supply paths 411 and 431.
［発明が解決しようとする問題点］
従来例の説明図の第４図のハ、に示すように、給電路４
１１を備える海底ケーブルに障害が発生した場合には、
他の陸揚局Ｂ、Ｃ間の海底ケーブルが無傷であっても、
給電路４２１と４３１間に給電を行うことができない、
即ち、陸揚局Ｂ、Ｃの何れにもマイナス極性の電ｉｆ！
ｅＬか備えられてないので電流を流すことができない。[Problems to be Solved by the Invention] As shown in FIG.
If a failure occurs in the submarine cable equipped with 11,
Even if the submarine cable between other landing stations B and C is intact,
Power cannot be supplied between the power supply lines 421 and 431,
In other words, both landing stations B and C have negative polarity if!
Since it is not equipped with an eL, current cannot flow through it.
装置と各陸揚局との間を接続する複数の海底ケーブルの
内特定の海底ケーブルの障害に対しては他の正常な海底
ケーブルの給電路により給電路を復旧できるが、全ての
陸揚局に接続する海底ケーブルの障害に対して復旧でき
ないという問題があった。If a particular submarine cable out of the multiple submarine cables connecting the equipment and each landing station fails, the power supply route can be restored using the power supply route of another normal submarine cable, but all the submarine cables There was a problem in that it was not possible to recover from failures in the submarine cables connected to the
本発明は、海中分岐装置と複数の陸揚局とを結ぶ複数の
海底ケーブルの何れの障害に対しても他の正常な海底ケ
ーブルの給電路を介して給電を可能にする海中分岐装置
の給電路切替回路を提供することを目的とする。The present invention provides a power supply for an underwater branching device that enables power to be supplied via the power supply path of other normal submarine cables in the event of a failure in any of the plurality of submarine cables connecting the underwater branching device and a plurality of landing stations. The purpose of this invention is to provide a path switching circuit.
Ｃ問題点を解決するための手段］ 第１図に本発明の基本的構成を示す。Measures to solve problem C] FIG. 1 shows the basic configuration of the present invention.
第１図において、１０は海中分岐装置、１１〜１３は夫
々陸揚局Ａ、Ｃ，Ｂ、１０１．１０２は真空リレーＲＬ
Ｂ、、ＲＬＣを表す。In Fig. 1, 10 is an underwater branching device, 11 to 13 are landing stations A, C, and B, respectively, and 101 and 102 are vacuum relays RL.
B, represents RLC.
本発明は複数の陸揚局Ａ−Ｃと海中分岐装置１０とを結
ぶ給電路１１０．１２０．１３０の内、特定の陸揚局Ａ
の給電路１１０の端子１１１と他の給電路１２０，１３
０の端子１２１．１３１との間に個別にリレーＲＬＢ、
ＲＬＣを設け、それらの常開接点す、ｃを並列に接続し
て一方を端子１１１に、他方を海底接地し、各陸揚局で
供給する電源の極性を適宜変更していずれの個所で給電
路に障害が発生しても残りの陸揚局間では通信の確保が
できるように構成した。The present invention is directed to a specific landing station A among the power supply lines 110, 120, and 130 connecting a plurality of landing stations A to C and the underwater branching device 10.
The terminal 111 of the feed line 110 and the other feed lines 120, 13
Relay RLB, individually between terminals 121 and 131 of 0;
Install an RLC, connect their normally open contacts (2) and (3) in parallel, connect one to terminal 111 and the other to the seabed, and change the polarity of the power supplied at each landing station as appropriate to supply power at any point. The configuration is such that even if a road failure occurs, communications can be maintained between the remaining landing stations.
［作用コ
本発明の作用を第２図（ａｌ、第２図（１））に示す作
用説明図を用いて説明する。[Function] The action of the present invention will be explained using the action explanatory diagram shown in FIG. 2 (al, FIG. 2 (1)).
■、初めに無給電時では、第１図に示すように２つのリ
レーＲＬＢ、ＲＬＣはいずれも駆動されてないので接点
す、ｃが開いているので、各給電路１１０．１２０．１
３０は海水（海中接地）から絶縁されており、光海底ケ
ーブルが正常に敷設されていることを確認できる。この
状態における測定（絶縁抵抗）により地絡障害が検出で
きる。(1) Initially, when no power is being supplied, as shown in Figure 1, both relays RLB and RLC are not driven, so contacts 1 and 1 are open, so each power supply path 110.120.1
30 is insulated from seawater (undersea ground), and it can be confirmed that the optical submarine cable is installed normally. Ground faults can be detected by measuring (insulation resistance) in this state.
■、正常の給電時には、第２図（ａｌのイ、に示すよう
に陸揚局Ａからプラス給電極性をプラスにして給電し、
陸揚局Ｂから給電極性をマイナスにして給電することに
より、リレーＲＬＢを駆動する。■ During normal power supply, power is supplied from landing station A with the positive polarity set to positive, as shown in Figure 2 (a).
Relay RLB is driven by supplying power from landing station B with negative polarity.
これにより、接点すが閉じて端子１１１（２つのリレー
が接続する点と同電位）の電圧は海底接地のレベルとな
る。As a result, the contact point closes and the voltage at the terminal 111 (same potential as the point where the two relays connect) becomes the level of submarine grounding.
なお、この場合予め海中分岐装置１０内の接点ｂ（端子
１１１と同電位）における電圧がほぼ０（海底接地レベ
ル）になるよう各陸揚局Ａ、Ｂから給電される電圧レベ
ルをケーブルの長さに応じて調整され、それにより接点
すが閉じる時にサージ電流が流れることが防止される。In this case, the voltage level supplied from each landing station A and B is adjusted in advance over the length of the cable so that the voltage at contact b (same potential as terminal 111) in the underwater branching device 10 becomes almost 0 (seafloor grounding level). This prevents surge currents from flowing when the contacts close.
次にこの海中分岐装置１０の海底接地を用いて陸揚局Ｃ
から給電極性をマイナスにして給電することにより、リ
レーＲＬＣを駆動する。すると、その接点Ｃが閉じて接
点すと並列に接地を行い、各給電路は地絡されて陸揚局
Ａ（９、陸揚局Ｂｅ、陸揚局ｃｅの極性で運用する。Next, using the seabed grounding of this underwater branching device 10, the landing station C
The relay RLC is driven by supplying power with negative polarity. Then, when the contact C closes and makes contact, they are grounded in parallel, and each power supply path is grounded and operated with the polarity of landing station A (9, landing station Be, and landing station ce).
■、第２図ｆａ１口、に示すように陸揚局Ｃとの給電路
１２０に障害が発生した場合は、陸揚局Ａにプラス電源
■を供給し、陸揚局Ｂにマイナス電源ｅを供給する。す
ると、リレーＲＬＢが動作して接点すが閉じて、端子１
１１は海底接地に接続して給電路が接地される。If a failure occurs in the power supply line 120 with landing station C, as shown in Fig. 2 fa1, the positive power supply ■ is supplied to the landing station A, and the negative power supply e is supplied to the landing station B. supply Then, relay RLB operates, contacts close, and terminal 1
11 is connected to the submarine ground, and the power supply line is grounded.
■、第２図（ｂｌのハ、に示すように陸揚局Ｂとの給電
路１３０に障害が発生した場合は、陸揚局Ａにプラス電
源のを供給し、陸揚局Ｃにマイナス電源ｅを供給するこ
とにより、リレーＲＬＣを動作させて、上記の給電路１
２０の障害時と同様に端子１１１は海底接地され、給電
路が保持される。■, If a failure occurs in the power supply line 130 with landing station B as shown in Figure 2 (c) in BL, positive power is supplied to landing station A, and negative power is supplied to landing station C. By supplying e, relay RLC is operated and the above power supply path 1
As in the case of failure in No. 20, the terminal 111 is grounded to the seabed, and the power supply path is maintained.
■、第２図（ｂ）の二、に示すように給電路１１０に障
害が発生した場合は、陸揚局Ｂは極性をプラスに変えて
電源ｅを給電し、陸揚局Ｃでは電源ｅを給電すると、リ
レーＲＬＢが動作し、接点すが閉じて海中分岐装置で給
電路は接地される。■If a failure occurs in the power supply line 110 as shown in Figure 2(b)-2, landing station B changes the polarity to positive and supplies power e, and landing station C supplies power e. When power is supplied, relay RLB is activated, the contact is closed, and the power supply path is grounded at the underwater branch device.
陸揚局Ｃはｅ極性で定常給電電流を給電すると、リレー
ＲＬＣが動作して接点Ｃが閉じて接点すと並列に接地を
行う。この後、陸揚局Ｂでは一旦電源ｅの給電を切った
後、極性を変えて電ａｅを供給して定常の給電電流で給
電を行う、これは、中継器が給電電流として一方の方向
からの電流で動作するように構成されているからである
。When the landing station C supplies a steady power supply current with e polarity, the relay RLC operates and the contact C closes and connects to ground in parallel. After this, at landing station B, after turning off power supply e, the polarity is changed and power ae is supplied to supply power with a steady power supply current.This is because the repeater supplies power from one direction as the power supply current. This is because the device is configured to operate with a current of .
［実施例］
本発明の実施例の構成を第３図（ａ）に示し、他の実施
例の構成を第３図（１））に示す。[Example] The configuration of an example of the present invention is shown in FIG. 3(a), and the configuration of another example is shown in FIG. 3(1)).
第３図ｆａ）の構成について説明すると、同図において
、３０は海中分岐装置、３１〜３３は夫々陸揚局Ａ〜Ｃ
を表し、３１２．３２２．３３２は夫々中継器を表す。To explain the configuration of FIG.
and 312, 322, and 332 each represent a repeater.
海中分岐装置３０内の給電路３２１．３３１と端子３０
０間には、真空リレーＲＬＢ、ＲＬＣの駆動用コイル３
０２．３０４とツェナーダイオード３０１．３０３が接
続されている。Power supply lines 321, 331 and terminals 30 in the underwater branching device 30
Between 0 and 0, there is a drive coil 3 for the vacuum relays RLB and RLC.
02.304 and Zener diodes 301.303 are connected.
この海中分岐装置の給電路切替回路の動作は第２図（ａ
）、第２図（ｂｌの説明において述べた動作と同様であ
る。なお、陸揚局Ａ−Ｃの何れか１つの局と海中分岐装
置との間の給電路に障害が発生した場合、それ以前の給
電を落とさない限り、何ら給電路の再立ち上げをする必
要がない。The operation of the power supply line switching circuit of this underwater branch device is shown in Figure 2 (a).
), Figure 2 (bl. There is no need to restart the power supply path unless the previous power supply is turned off.
第３図（ａ）の構成において、ツェナーダイオード３０
１と３０３はリレーへのサージ電流を防止するためと、
リレーを駆動する給電電流の方向を識別するために設け
られている。すなわち、最初の定常状態では立ち上げ時
に陸揚局Ａからの電源のと陸揚局Ｂの電源ｅとが供給さ
れ、リレーＲＬＢが駆動されて、端子３００が海中接地
されたあと、陸揚局Ｃで電源ｅが供給されることにより
リレーＲＬＣが動作する。この時の電流の方向はツェナ
ーダイオードに流れないでリレーに流れる。In the configuration of FIG. 3(a), the Zener diode 30
1 and 303 are for preventing surge current to the relay,
It is provided to identify the direction of the supply current that drives the relay. That is, in the initial steady state, when starting up, the power from landing station A and the power e from landing station B are supplied, relay RLB is driven, and after terminal 300 is grounded underwater, the landing station Relay RLC operates by supplying power e at C. At this time, the current does not flow to the Zener diode, but to the relay.
この実施例の場合、陸揚局Ａと海中分岐装置との間の給
電路が切断した場合、上記の第２図（ｂｌの二、の場合
（リレーＲＬＢは両方向の電流で動作する）と異なり、
陸揚局Ｂで電源のを供給し、陸揚局Ｃで電源ｅを供給す
ると、陸揚局からの電流はリレーＲＬＢのコイルを通ら
すツェナーダイオード３０３を通って、リレーＲＬ’Ｃ
のコイルを通って陸揚局Ｃに達する。これにより、リレ
ーＲＬＢは動作せず、リレーＲＬＣが動作し、その接点
Ｃが閉じて端子３００が海底接地される。In the case of this embodiment, if the power supply line between the landing station A and the underwater branch device is disconnected, unlike the case of Figure 2 (bl-2) above (the relay RLB operates with current in both directions), ,
When landing station B supplies power and landing station C supplies power e, the current from the landing station passes through Zener diode 303 passing through the coil of relay RLB, and then passes through relay RL'C.
It reaches landing station C through the coil. As a result, relay RLB does not operate, relay RLC operates, its contact C closes, and terminal 300 is grounded to the seabed.
その接地の後、陸揚局Ｂから電源Φを切って電源ｅを供
給すると、今度は海底接地からの電流がリレーＲＬＢの
コイルを通って陸揚局Ｂに達するように流れて、リレー
ＲＬＢが動作し、接点すにより接点Ｃと並列に接地され
る。After the grounding, when the power supply Φ is turned off and the power supply e is supplied from landing station B, the current from the seabed grounding flows through the coil of relay RLB to reach landing station B, and relay RLB is activated. It operates and is grounded in parallel with contact C by contact S.
次に第３図（ｂ）に示す本発明の他の実施例の構成につ
いて説明する。Next, the structure of another embodiment of the present invention shown in FIG. 3(b) will be described.
第３図中）において、５０は海中分岐装置、５１〜５５
は夫々陸揚局Ａ−Ｅを表し、５０１〜５０４は各陸揚局
Ｂ−Ｅの給電路と端子５００との間に設けられた真空リ
レーＲＬＢ−ＲＬＥである。3), 50 is an underwater branching device, 51 to 55
represent landing stations A to E, respectively, and 501 to 504 are vacuum relays RLB to RLE provided between the power supply path of each landing station B to E and the terminal 500.
この実施例の構成は陸揚局が５局になった点が第３図（
ａｌと異なるが、動作原理は第３図ｔａ＋と同様である
。この場合、何処の給電路に障害が発生しても、他の２
つの陸揚局間で１つのリレーを動作させることにより、
海中分岐装置内の端子を海中接地し、その後他の陸揚局
から接地に対して片端給電を行うことにより、定常状態
と同様の給電が行われる。同様に陸揚局数がいくつにな
っても同じ原理で給電路を設定可能である。The configuration of this embodiment has five landing stations as shown in Figure 3 (
Although it is different from al, the operating principle is the same as that of ta+ in FIG. In this case, even if a failure occurs in any power supply line, the other two
By operating one relay between two landing stations,
Power is supplied in the same way as in a steady state by grounding the terminal in the underwater branching device underwater and then supplying power from another landing station to the ground at one end. Similarly, no matter how many landing stations there are, the power supply route can be set using the same principle.
［発明の効果］
本発明によれば、多数の陸揚局と接続する給電路と接続
された海中分岐装置において運用中に何れか１本の給電
路に障害が発生しても、残りの給電路に影響を与えるこ
となく給電を行うことができる。[Effects of the Invention] According to the present invention, even if a failure occurs in one of the power feed lines during operation in an underwater branch device connected to power feed lines connecting to a large number of landing stations, the remaining power feed lines Power can be supplied without affecting the road.
第１図は本発明の基本的構成を示す図、第２図（ａｌと
第２図中）は本発明の作用説明図、第３図（ａ）は本発
明の実施例の構成を示す図、第３図（ｂｌは本発明の他
の実施例の構成を示す図、第４図は従来例の説明図であ
る。
第１図中、
１０：海中分岐装置
１１〜１３：陸揚局Ａ、Ｃ，Ｂ
１０１．１０２：真空リレーＲＬＢ、ＲＬＣ１１０，１
２０，１３０：給電路Fig. 1 is a diagram showing the basic configuration of the present invention, Fig. 2 (al and in Fig. 2) is an explanatory diagram of the operation of the present invention, and Fig. 3 (a) is a diagram showing the configuration of an embodiment of the present invention. , FIG. 3 (bl is a diagram showing the configuration of another embodiment of the present invention, and FIG. 4 is an explanatory diagram of a conventional example. In FIG. 1, 10: Undersea branching devices 11 to 13: Landing station A , C, B 101.102: Vacuum relay RLB, RLC110,1
20,130: Power supply line
Claims (1)
送路と給電路とを分岐接続するために設けられた海中分
岐装置（１０）の給電路切替回路において、 特定の陸揚局（１１）に接続された１つの給電路端子（
１１１）と他の各局に接続された給電路端子（１２１、
１３１）との間にそれぞれ切替リレー（１０１、１０２
）を設け、各切替リレーの動作時に閉結する接点（ｂ、
ｃ）を並列に接続して一端を前記１つの給電路端子（１
１１）に、他端を海底アースに接続し、全ての給電路は
無給電時に海水から絶縁され、２つの陸揚局から給電を
かけることにより前記複数の切替リレーの中の１つを動
作させて前記１つの給電路端子を接地して他の各陸揚局
からは片端給電で各給電路に給電することを特徴とする
海中分岐装置の給電路切替回路。[Claims] A power supply line switching circuit of an underwater branching device (10) provided for branching and connecting a transmission line and a power supply line of an optical submarine cable connected to three or more landing stations, One feedline terminal (11) connected to a specific landing station (11)
111) and the feed line terminals (121, 121,
131) and switching relays (101, 102) respectively.
), and contacts (b,
c) are connected in parallel and one end is connected to the one feed line terminal (1
11), the other end is connected to the seabed ground, all power supply lines are insulated from seawater when no power is being supplied, and one of the plurality of switching relays is operated by applying power from the two landing stations. 1. A power feed path switching circuit for an underwater branching device, characterized in that said one power feed path terminal is grounded, and power is supplied from each other landing station to each power feed path by one end feeding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2543288A JPH01200832A (en) | 1988-02-05 | 1988-02-05 | Power suppling line switching circuit for underwater branching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2543288A JPH01200832A (en) | 1988-02-05 | 1988-02-05 | Power suppling line switching circuit for underwater branching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01200832A true JPH01200832A (en) | 1989-08-14 |
Family
ID=12165815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2543288A Pending JPH01200832A (en) | 1988-02-05 | 1988-02-05 | Power suppling line switching circuit for underwater branching device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01200832A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5214312A (en) * | 1990-07-10 | 1993-05-25 | Fujitsu Limited | Power feed line switching circuit for submarine branching device and method of feeding power to submarine cable communication system |
-
1988
- 1988-02-05 JP JP2543288A patent/JPH01200832A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5214312A (en) * | 1990-07-10 | 1993-05-25 | Fujitsu Limited | Power feed line switching circuit for submarine branching device and method of feeding power to submarine cable communication system |
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