JPH06104799A - Submarine branching device - Google Patents
Submarine branching deviceInfo
- Publication number
- JPH06104799A JPH06104799A JP4274919A JP27491992A JPH06104799A JP H06104799 A JPH06104799 A JP H06104799A JP 4274919 A JP4274919 A JP 4274919A JP 27491992 A JP27491992 A JP 27491992A JP H06104799 A JPH06104799 A JP H06104799A
- Authority
- JP
- Japan
- Prior art keywords
- relay
- current
- feeding
- contact
- optical submarine
- 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.)
- Granted
Links
Landscapes
- Cable Accessories (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Optical Communication System (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は海底分岐装置（海中分岐
装置ともいう）に関し、特に光海底中継器を含む光海底
ケーブル通信システムに適用される海底分岐装置の給電
制御（給電電流の立上げおよび立下げの制御等）に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a submarine branching device (also referred to as a submarine branching device), and particularly to power supply control of a submarine branching device applied to an optical submarine cable communication system including an optical submarine repeater (rise of a feeding current). And control of the fall).
【０００２】[0002]
【従来の技術】海底分岐装置は、光海底ケーブルを介し
て通信される信号を海中で分岐する装置であり、一般
に、１本の幹線光海底ケーブル（主ケーブル）と２本の
分岐光海底ケーブルとを接続している（図１および図２
参照）。2. Description of the Related Art A submarine branching device is a device for branching a signal communicated via an optical submarine cable in the sea. Generally, one trunk optical submarine cable (main cable) and two branch optical submarine cables are used. And are connected (see FIGS. 1 and 2).
reference).
【０００３】海底分岐装置は、光海底中継器や自己（海
底分岐装置）等を駆動するための電力を供給する制御を
も行っている。すなわち、海底分岐装置には、地上の端
局における給電装置から供給される電力を各光海底中継
器等に供給する給電制御を行う機能が設けられている。The submarine branching device also controls the supply of electric power for driving the optical submarine repeater, self (submarine branching device) and the like. That is, the submarine branching device is provided with a function of performing power feeding control for supplying the power supplied from the power feeding device at the terminal station on the ground to each optical submarine repeater or the like.
【０００４】本発明は、図１および図２に示すような光
海底ケーブル通信システムに適用される海底分岐装置を
対象とする。この光海底ケーブル通信システムは、海中
接地用電極９と、Ｂ局側の光海底ケーブル１０（分岐光
海底ケーブル）と、光海底ケーブル１０における中継を
行う光海底中継器１１（複数の光海底中継器１１が存在
しうる。光海底中継器１４や光海底中継器１７について
も同様）と、Ｂ局における給電装置１２と、Ｃ局側の光
海底ケーブル１３（分岐光海底ケーブル）と、光海底ケ
ーブル１３における中継を行う光海底中継器１４と、Ｃ
局における給電装置１５と、Ａ局側の光海底ケーブル１
６（幹線光海底ケーブル）と、光海底ケーブル１６にお
ける中継を行う光海底中継器１７と、Ａ局における給電
装置１８と、海底分岐装置（図１では海底分岐装置１で
あり、図２では海底分岐装置１９である）とを含んで構
成されている。なお、Ａ局，Ｂ局およびＣ局は陸揚局
（地上の端局）であり、Ｂ局とＣ局とは互換的である。The present invention is directed to a submarine branching device applied to an optical submarine cable communication system as shown in FIGS. 1 and 2. This optical submarine cable communication system comprises an undersea grounding electrode 9, an optical submarine cable 10 (branch optical submarine cable) on the B station side, and an optical submarine repeater 11 (a plurality of optical submarine relays) for relaying in the optical submarine cable 10. Optical submarine repeater 14 and optical submarine repeater 17 as well), power supply device 12 at station B, optical submarine cable 13 (branch optical submarine cable) at station C, and optical submarine An optical submarine repeater 14 for relaying on the cable 13, and C
Power supply device 15 at the station and optical submarine cable 1 at station A
6 (main line optical submarine cable), an optical submarine repeater 17 for relaying in the optical submarine cable 16, a power feeding device 18 in the A station, and a submarine branching device (the submarine branching device 1 in FIG. 1, and the submarine in FIG. 2). And a branching device 19). Stations A, B and C are landing stations (terrestrial terminals), and stations B and C are interchangeable.
【０００５】従来の海底分岐装置（ここでは、図２中の
海底分岐装置１９で説明する）は、給電制御を実現する
ために、リレー駆動巻線３と、リレー駆動巻線５に対応
するリレー接点４（１×２のリレー接点であり、共通接
点とブレーク接点（ａ）とメーク接点（ｂ）とを有する
リレー接点）と、リレー駆動巻線５と、リレー駆動巻線
３に対応するリレー接点６（１×２のリレー接点であ
り、共通接点とブレーク接点（ａ）とメーク接点（ｂ）
とを有するリレー接点）とを含んで構成されていた。A conventional submarine branching device (herein, described as a submarine branching device 19 in FIG. 2) is a relay corresponding to the relay drive winding 3 and the relay drive winding 5 in order to realize power supply control. Contact 4 (1 × 2 relay contact, which has a common contact, a break contact (a), and a make contact (b)), a relay drive winding 5, and a relay corresponding to the relay drive winding 3. Contact 6 (1 × 2 relay contact, common contact, break contact (a), and make contact (b))
And a relay contact with).
【０００６】従来、このように構成された海底分岐装置
１９では、給電の開始および停止（給電電流の立上げお
よび立下げ）の制御は次のようにして行われていた（図
２参照）。なお、ここでは、Ａ局の給電装置１８とＢ局
の給電装置１２との間で両端給電（２局間給電）が行わ
れており、Ｃ局の給電装置１５と海中アース（海中接地
用電極９に係るアース）との間で片局給電が行われてい
るものとする（Ｂ局とＣ局とは互換的であるので、Ａ局
の給電装置１８とＣ局の給電装置１５との間で両端給電
を行いＢ局の給電装置１２と海中アースとの間で片局給
電を行うことも可能である）。Conventionally, in the submarine branching device 19 thus configured, the control of starting and stopping the power supply (starting and stopping of the power supply current) has been performed as follows (see FIG. 2). In addition, here, both-end power feeding (power feeding between two stations) is performed between the power feeding device 18 of the A station and the power feeding device 12 of the B station, and the power feeding device 15 of the C station and the underwater earth (underwater grounding electrode). It is assumed that single-station power supply is performed between the power supply device 18 of the A station and the power supply device 15 of the C station because the B station and the C station are compatible with each other. It is also possible to supply power at both ends and supply power to one station between the power supply device 12 of station B and the undersea ground).
【０００７】第１に、給電の開始時における制御につい
て説明する。First, the control at the start of power feeding will be described.
【０００８】Ｃ局の給電装置１５が給電を開始する前
に、Ａ局の給電装置１８およびＢ局の給電装置１２が給
電を開始する。Before the power feeding device 15 of the C station starts power feeding, the power feeding device 18 of the A station and the power feeding device 12 of the B station start power feeding.
【０００９】Ａ局とＢ局との間の給電電流は、光海底ケ
ーブル１６，光海底中継器１７，リレー駆動巻線３，リ
レー接点４，光海底ケーブル１０および光海底中継器１
１を介して、給電装置１８から給電装置１２に流れ込
む。この給電電流がリレー駆動巻線３を流れることによ
り、リレー接点６は（ａ）側（ブレーク接点側）から
（ｂ）側（メーク接点側）に切り替わる。The power supply current between the stations A and B is supplied to the optical submarine cable 16, the optical submarine repeater 17, the relay drive winding 3, the relay contact 4, the optical submarine cable 10 and the optical submarine repeater 1.
1 through the power feeding device 18 into the power feeding device 12. When the power supply current flows through the relay drive winding 3, the relay contact 6 is switched from the (a) side (break contact side) to the (b) side (make contact side).
【００１０】このリレー接点６の切替わりが確認される
と、Ｃ局の給電装置１５が給電を開始する（リレー接点
６が（ｂ）側に切り替わるまで給電装置１５による給電
は行われないので、リレー駆動巻線５の駆動に基づくリ
レー接点４の切替わりは生じない）。When the switching of the relay contact 6 is confirmed, the power feeding device 15 of the C station starts power feeding (since the power feeding device 15 does not feed power until the relay contact 6 is switched to the (b) side, Switching of the relay contact 4 based on the drive of the relay drive winding 5 does not occur).
【００１１】その結果、海中接地用電極９から流れ込ん
だＣ局からの給電電流は、リレー接点６，光海底ケーブ
ル１３および光海底中継器１４を介して、Ｃ局の給電装
置１５に流れ込む。As a result, the power supply current from the station C flowing from the undersea grounding electrode 9 flows into the power supply device 15 of the station C via the relay contact 6, the optical submarine cable 13 and the optical submarine repeater 14.
【００１２】上述した一連の動作により、海底分岐装置
１９および全ての光海底中継器１１，１４および１７へ
の給電が可能となり、Ａ局，Ｂ局およびＣ局の相互間で
の通信が可能となる。By the series of operations described above, power can be supplied to the submarine branching device 19 and all the optical submarine repeaters 11, 14 and 17, and communication between stations A, B and C is possible. Become.
【００１３】第２に、給電の停止時の制御について説明
する。Secondly, the control when the power supply is stopped will be described.
【００１４】まず、Ｃ局の給電装置１５が給電を停止す
る。First, the power supply device 15 of the C station stops the power supply.
【００１５】次に、Ａ局とＢ局との間の給電電流が減少
されていき、給電装置１８および給電装置１２が給電を
停止する。ここで、リレー駆動巻線３を流れる給電電流
が一定の値の電流（駆動解除電流）まで降下すると、リ
レー接点６は（ｂ）側から（ａ）側に切り替わる。Next, the power supply current between station A and station B is reduced, and power supply device 18 and power supply device 12 stop supplying power. Here, when the power supply current flowing through the relay drive winding 3 drops to a constant value current (drive release current), the relay contact 6 switches from the (b) side to the (a) side.
【００１６】[0016]
【発明が解決しようとする課題】上述した従来の海底分
岐装置（海底分岐装置１９）による給電制御には、以下
に示すような問題点があった。The power supply control by the above-mentioned conventional submarine branching device (submarine branching device 19) has the following problems.
【００１７】給電の開始時の制御において、給電装置１
８から給電装置１２に至る給電電流が増加される際に、
その給電電流がリレー駆動巻線３の最小感動電流に達し
た時点で、上述のようにリレー駆動巻線３に対応するリ
レー接点６が（ａ）側から（ｂ）側に切り替わる。ここ
で、この最小感動電流に達する直前では、海底分岐装置
１９の内部の回路は海中接地用電極９に接続されている
部分を除いて全て一定の電位（Ｖｍとする）の状態にな
っている。また、この電位Ｖｍは、光海底ケーブル１３
および光海底中継器１４にもリレー接点６を介して印加
されている。In the control at the start of power feeding, the power feeding device 1
When the power supply current from 8 to the power supply device 12 is increased,
When the supplied current reaches the minimum moving current of the relay drive winding 3, the relay contact 6 corresponding to the relay drive winding 3 is switched from the (a) side to the (b) side as described above. Immediately before reaching the minimum moving current, all circuits inside the submarine branching device 19 are in a constant potential (Vm) except for the part connected to the undersea grounding electrode 9. . In addition, this potential Vm is the optical submarine cable 13
It is also applied to the optical submarine repeater 14 via the relay contact 6.
【００１８】したがって、給電電流が上記の最小感動電
流に達した時点でリレー接点６が（ａ）側から（ｂ）側
に切り替わると、光海底ケーブル１３および光海底中継
器１４は電位Ｖｍから突然に海中アースの電位（０Ｖ）
に変化することになる。Therefore, when the relay contact 6 is switched from the (a) side to the (b) side at the time when the feeding current reaches the above-mentioned minimum moving current, the optical submarine cable 13 and the optical submarine repeater 14 suddenly change from the potential Vm. The potential of undersea earth (0V)
Will change to.
【００１９】一般に、海底分岐装置を必要とするような
光海底ケーブル通信システムでは、光海底ケーブルは数
百ｋｍを超える長距離海底ケーブルとなる。したがっ
て、光海底ケーブル１３の中心導体と海水との間には大
きな静電容量が存在する。よって、上述のような電位の
変化（Ｖｍから０Ｖへの変化）により、この大きな静電
容量に対して電位Ｖｍによって蓄積されていた電荷が瞬
時に光海底ケーブル１３，リレー接点６および海中接地
電極９を介して放電されることになる。Generally, in an optical submarine cable communication system that requires a submarine branching device, the optical submarine cable is a long-distance submarine cable exceeding several hundred km. Therefore, a large capacitance exists between the center conductor of the optical submarine cable 13 and seawater. Therefore, due to the change in potential (change from Vm to 0 V) as described above, the charges accumulated by the potential Vm with respect to this large capacitance are instantaneously transferred to the optical submarine cable 13, the relay contact 6, and the undersea ground electrode. It will be discharged via 9.
【００２０】この放電による放電電流（放電電流の大き
さは海底分岐装置１９が光海底ケーブル通信システム上
に設置される位置により異なってくる）はリレー接点６
や光海底中継器１４に対してサージ電流となり、これら
の装置等の劣化の要因となる。The discharge current due to this discharge (the magnitude of the discharge current varies depending on the position where the submarine branching device 19 is installed on the optical submarine cable communication system) is the relay contact 6
And a surge current to the optical submarine repeater 14 and cause deterioration of these devices and the like.
【００２１】また、給電の停止時の制御において、給電
装置１８から給電装置１２に至る給電電流が減少される
際にもサージ電流は発生する。Further, in the control when the power supply is stopped, the surge current is also generated when the power supply current from the power supply device 18 to the power supply device 12 is reduced.
【００２２】すなわち、給電装置１８から給電装置１２
に至る給電電流が降下していくと、その電流値がリレー
駆動巻線３の駆動解除電流（駆動解除電流と最小感動電
流とは同一であるものとする）に達した時点でリレー接
点６は（ｂ）側から（ａ）側に切り替わる。この時点で
は、まだ海底分岐装置１９は一定の電位（Ｖｎとする）
の状態にある。また、光海底ケーブル１３および光海底
中継器１４の電位は、この時点まで、海中アースの電位
（０Ｖ）となっていた。したがって、給電電流が上記の
駆動解除電流に達した時点でリレー接点６が（ｂ）側か
ら（ａ）側に切り替わると、光海底ケーブル１３および
光海底中継器１４は海中アースの電位（０Ｖ）から突然
に電位Ｖｎに変化することになる。そこで、リレー接点
６や光海底中継器１４に対してサージ電流が流れる。That is, from the power feeding device 18 to the power feeding device 12
When the current value reaches the drive release current of the relay drive winding 3 (the drive release current and the minimum moving current are the same), the relay contact 6 becomes The side (b) is switched to the side (a). At this point, the submarine branching device 19 is still at a constant potential (Vn).
Is in the state of. Further, the electric potentials of the optical submarine cable 13 and the optical submarine repeater 14 have been the electric potential (0 V) of the undersea earth until this point. Therefore, when the relay contact 6 is switched from the (b) side to the (a) side at the time when the power supply current reaches the above drive release current, the optical submarine cable 13 and the optical submarine repeater 14 have the potential of the undersea earth (0 V). Suddenly changes to the potential Vn. Therefore, surge current flows to the relay contact 6 and the optical submarine repeater 14.
【００２３】このように、従来の海底分岐装置における
給電制御では、光海底ケーブル通信システムにおける給
電の開始時および停止時においてサージ電流が発生する
ので、海底分岐装置内のリレー接点や光海底ケーブル通
信システムを構成する光海底中継器の劣化（光海底中継
器については海底分岐装置の直近に接続される光海底中
継器が最も大きな影響を受ける）を招くという欠点があ
った。As described above, in the power feeding control in the conventional submarine branching device, a surge current is generated at the start and stop of power feeding in the optical submarine cable communication system, so that a relay contact in the submarine branching device or an optical submarine cable communication is generated. There is a drawback that it causes deterioration of the optical submarine repeaters constituting the system (for the optical submarine repeaters, the optical submarine repeaters connected in the immediate vicinity of the submarine branching device are most affected).
【００２４】本発明の目的は、上述の点に鑑み、光海底
ケーブル通信システムへの給電の開始時および停止時に
発生するサージ電流を抑制することができる給電制御を
行う海底分岐装置を提供することにある。In view of the above points, an object of the present invention is to provide a submarine branching device for performing power feeding control capable of suppressing a surge current generated at the start and stop of power feeding to an optical submarine cable communication system. It is in.
【００２５】[0025]
【課題を解決するための手段】本発明の海底分岐装置
は、Ａ局からの１本の幹線光海底ケーブルとＢ局および
Ｃ局からの２本の分岐光海底ケーブルとを接続する海底
分岐装置において、両端給電の給電路の給電電流の値を
検出する第１のリレー駆動巻線と、この第１のリレー駆
動巻線の最小感動電流および駆動解除電流よりも小さな
値の最小感動電流および駆動解除電流を有し両端給電の
給電路の給電電流の値を検出する第２のリレー駆動巻線
と、片局給電の給電路にメーク接点が挿入される前記第
１のリレー駆動巻線に対応する第１のリレー接点と、共
通接点が分岐光海底ケーブルに接続されメーク接点が前
記第１のリレー接点に接続されブレーク接点が両端給電
の給電路に接続される前記第２のリレー駆動巻線に対応
する第２のリレー接点と、片局給電の給電路において前
記第１のリレー接点と並列に接続されておりサージ電流
を抑制するのに十分な大きさの抵抗値を持つ抵抗とを有
する。The submarine branching device of the present invention is a submarine branching device that connects one trunk optical submarine cable from station A and two branch optical submarine cables from station B and station C. , A first relay drive winding for detecting a value of a power supply current of a power supply path of both ends power supply, and a minimum touching current and driving of a value smaller than a minimum touching current and a drive release current of the first relay driving winding. Corresponds to the second relay drive winding that has a release current and detects the value of the power supply current of the power supply path of both ends power supply, and the first relay drive winding in which a make contact is inserted in the power supply path of single-station power supply. A second relay drive winding in which a first relay contact and a common contact are connected to a branched optical submarine cable, a make contact is connected to the first relay contact, and a break contact is connected to a power feeding path for feeding both ends. Second relay connection corresponding to When, and a resistor having a resistance value large enough to suppress the first surge current is connected in parallel with the relay contacts in the power supply path of the strip station power feeding.
【００２６】[0026]
【作用】本発明の海底分岐装置では、第１のリレー駆動
巻線が両端給電の給電路の給電電流の値を検出し、第１
のリレー駆動巻線の最小感動電流および駆動解除電流よ
りも小さな値の最小感動電流および駆動解除電流を有す
る第２のリレー駆動巻線が両端給電の給電路の給電電流
の値を検出し、第１のリレー駆動巻線に対応する第１の
リレー接点が片局給電の給電路中にメーク接点を有し、
第２のリレー駆動巻線に対応する第２のリレー接点が分
岐光海底ケーブルに接続される共通接点と第１のリレー
接点に接続されるメーク接点と両端給電の給電路に挿入
されるブレーク接点とを有し、片局給電の給電路におい
て第１のリレー接点と並列に接続されている抵抗がサー
ジ電流を抑制するのに十分な大きさの抵抗値を持つ。In the submarine branching device of the present invention, the first relay drive winding detects the value of the feeding current of the feeding path of the both ends feeding,
A second relay drive winding having a minimum touching current and drive release current smaller than the minimum touching current and drive release current of the relay drive winding of The first relay contact corresponding to the relay drive winding of 1 has a make contact in the power supply path of single-station power supply,
The second relay contact corresponding to the second relay drive winding is a common contact that is connected to the branched optical submarine cable, a make contact that is connected to the first relay contact, and a break contact that is inserted in the power supply path of both ends power supply. And a resistor connected in parallel with the first relay contact in the power feeding path for single-station power feeding has a resistance value large enough to suppress a surge current.
【００２７】[0027]
【実施例】次に、本発明について図面を参照して詳細に
説明する。The present invention will be described in detail with reference to the drawings.
【００２８】図１は、本発明の海底分岐装置の一実施例
（海底分岐装置１）を含む光海底ケーブル通信システム
の構成を示す図である。FIG. 1 is a diagram showing the configuration of an optical submarine cable communication system including an embodiment (submarine branching device 1) of the submarine branching device of the present invention.
【００２９】この光海底ケーブル通信システムは、海底
分岐装置１以外は従来技術で言及した光海底ケーブル通
信システム（図２参照）と同一である。なお、図１と図
２との間で同様の構成要素（海底分岐装置１内の構成要
素も含む）については同一の符号を使用して示してい
る。This optical submarine cable communication system is the same as the optical submarine cable communication system (see FIG. 2) referred to in the prior art except for the submarine branching device 1. In addition, the same components (including components in the submarine branching device 1) are denoted by the same reference numerals between FIGS. 1 and 2.
【００３０】本実施例の海底分岐装置１は、給電制御を
実現するために、リレー駆動巻線２と、リレー駆動巻線
３と、リレー駆動巻線５に対応するリレー接点４（１×
２のリレー接点であり、共通接点とブレーク接点（ａ）
とメーク接点（ｂ）とを有するリレー接点）と、リレー
駆動巻線５と、リレー駆動巻線３に対応するリレー接点
６（１×２のリレー接点であり、共通接点とブレーク接
点（ａ）とメーク接点（ｂ）とを有するリレー接点）
と、リレー駆動巻線２に対応するリレー接点７（１×１
のリレー接点であり、メーク接点を有するリレー接点）
と、リレー接点７と並列に接続されておりサージ電流を
抑制するのに十分な大きさの抵抗値を持つ抵抗８とを含
んで構成されている。なお、リレー駆動巻線２の最小感
動電流（駆動解除電流も同じ値であるとする）をＩ2 と
しリレー駆動巻線３の最小感動電流（駆動解除電流も同
じ値であるとする）をＩ3 とした場合に、Ｉ2 ＞Ｉ3 の
関係が成立している。また、「特許請求の範囲」におけ
る「第１のリレー駆動巻線」はリレー駆動巻線２によっ
て実現され、「第２のリレー駆動巻線」はリレー駆動巻
線３または５（以下の説明ではリレー駆動巻線３）によ
って実現され、「第１のリレー接点」はリレー接点７に
よって実現され、「第２のリレー接点」はリレー接点４
または６（以下の説明ではリレー接点６）によって実現
される。The submarine branching device 1 of this embodiment has a relay contact 4 (1 × 1) corresponding to the relay drive winding 2, the relay drive winding 3, and the relay drive winding 5 in order to realize power supply control.
2 relay contacts, common contact and break contact (a)
And a make contact (b)), a relay drive winding 5, and a relay contact 6 (1 × 2 relay contact corresponding to the relay drive winding 3; a common contact and a break contact (a)). Relay contact having a contact and a make contact (b))
And the relay contact 7 (1 × 1
Relay contact, which has a make contact)
And a resistor 8 connected in parallel with the relay contact 7 and having a resistance value large enough to suppress the surge current. Note that the minimum moving current of the relay drive winding 2 (assuming that the drive release current has the same value) is I 2, and the minimum moving current of the relay drive winding 3 (assuming that the drive release current has the same value) is I. When 3 , the relationship of I 2 > I 3 is established. Further, the "first relay drive winding" in the "claims" is realized by the relay drive winding 2, and the "second relay drive winding" is the relay drive winding 3 or 5 (in the following description, Is realized by the relay drive winding 3), the "first relay contact" is realized by the relay contact 7, and the "second relay contact" is the relay contact 4
Or 6 (relay contact 6 in the following description).
【００３１】次に、このように構成された本実施例の海
底分岐装置１による給電制御に関する動作について説明
する。Next, the operation relating to the power supply control by the submarine branching device 1 of the present embodiment having such a configuration will be described.
【００３２】第１に、海底分岐装置１を含む光海底ケー
ブル通信システムにおける給電の開始時（給電電流の立
上げ時）の動作について説明する。First, the operation of the optical submarine cable communication system including the submarine branching device 1 at the start of power supply (when the power supply current is started) will be described.
【００３３】Ｃ局の給電装置１５が給電を開始する前
に、Ａ局の給電装置１８およびＢ局の給電装置１２が給
電を開始する。Before the power feeding device 15 of the C station starts power feeding, the power feeding device 18 of the A station and the power feeding device 12 of the B station start power feeding.
【００３４】Ａ局とＢ局との間の給電電流は、光海底ケ
ーブル１６，光海底中継器１７，リレー駆動巻線２，リ
レー駆動巻線３，リレー接点４，光海底ケーブル１０お
よび光海底中継器１１を介して、給電装置１８から給電
装置１２に流れ込む。The power supply current between the stations A and B is supplied to the optical submarine cable 16, the optical submarine repeater 17, the relay drive winding 2, the relay drive winding 3, the relay contact 4, the optical submarine cable 10 and the optical submarine. It flows from the power feeding device 18 into the power feeding device 12 via the relay 11.
【００３５】この給電電流が上昇する際に、この給電電
流がリレー駆動巻線３の最小感動電流Ｉ3 に達する直前
において、海底分岐装置１の内部の回路（海中接地用電
極９に接続されている部分を除く）は一定の値の電位
（Ｖｍとする）の状態となっている。また、この電位Ｖ
ｍは、光海底ケーブル１３および光海底中継器１４にも
リレー接点６を介して印加されている。When this power supply current rises, immediately before this power supply current reaches the minimum moving current I 3 of the relay drive winding 3, the internal circuit of the submarine branching device 1 (connected to the undersea grounding electrode 9). The portion (excluding the portion where it is present) is in a state of a constant potential (Vm). Also, this potential V
m is also applied to the optical submarine cable 13 and the optical submarine repeater 14 via the relay contact 6.
【００３６】給電電流が最小感動電流Ｉ3 に達した時点
で、リレー駆動巻線３に対応するリレー接点６は（ａ）
側（ブレーク接点側）から（ｂ）側（メーク接点側）に
切り替わる。When the feeding current reaches the minimum moving current I 3 , the relay contact 6 corresponding to the relay drive winding 3 is (a).
Side (break contact side) to (b) side (make contact side).
【００３７】上述したように、従来の海底分岐装置（図
２中の海底分岐装置１９）による給電制御であれば、こ
の時点でサージ電流が発生していた。As described above, if the power supply is controlled by the conventional submarine branching device (submarine branching device 19 in FIG. 2), the surge current is generated at this point.
【００３８】しかし、本実施例の海底分岐装置１による
給電制御では、リレー駆動巻線２，リレー接点７および
抵抗８の存在によって、次に示すようにサージ電流の発
生が回避されている。However, in the power supply control by the submarine branching device 1 of the present embodiment, the existence of the relay drive winding 2, the relay contact 7 and the resistor 8 avoids the generation of surge current as shown below.
【００３９】リレー駆動巻線２の最小感動電流Ｉ2 がリ
レー駆動巻線３の最小感動電流Ｉ3よりも大きい（Ｉ2
＞Ｉ3 ）ので、給電電流がＩ3 に達してもリレー駆動巻
線２に対応するリレー接点７のメーク接点は開いたまま
となっている。したがって、リレー接点６が（ａ）側か
ら（ｂ）側に切り替わっても、電位Ｖｍによって光海底
ケーブル１３に係る静電容量に蓄積されていた電荷は抵
抗８を通ってゆっくり放電される。よって、リレー接点
６や光海底中継器１４に対するサージ電流は発生しな
い。The minimum moving current I 2 of the relay drive winding 2 is larger than the minimum moving current I 3 of the relay drive winding 3 (I 2
> I 3 ), the make contact of the relay contact 7 corresponding to the relay drive winding 2 remains open even when the supply current reaches I 3 . Therefore, even if the relay contact 6 is switched from the (a) side to the (b) side, the electric charge accumulated in the electrostatic capacitance of the optical submarine cable 13 due to the potential Vm is slowly discharged through the resistor 8. Therefore, no surge current is generated in the relay contact 6 or the optical submarine repeater 14.
【００４０】Ａ局とＢ局との間の給電電流がさらに増加
してリレー駆動巻線２の最小感動電流Ｉ2 に達すると、
リレー駆動巻線２に対応するリレー接点７のメーク接点
が閉じる（リレー接点６の（ｂ）側の接点が海中接地用
電極９に直接に接続される）。When the power supply current between the A station and the B station further increases and reaches the minimum moving current I 2 of the relay drive winding 2,
The make contact of the relay contact 7 corresponding to the relay drive winding 2 is closed (the contact on the (b) side of the relay contact 6 is directly connected to the underwater grounding electrode 9).
【００４１】その結果、Ｃ局の給電装置１５から光海底
中継器１４等への給電が可能となる。すなわち、この時
点では、リレー接点６は（ａ）側から（ｂ）側に切り替
わっておりリレー接点７のメーク接点は閉じているの
で、海中接地用電極９から流れ込んだＣ局からの給電電
流はリレー接点７，リレー接点６，光海底ケーブル１３
および光海底中継器１４を介してＣ局の給電装置１５に
流れ込む。As a result, power can be supplied from the power supply device 15 of the C station to the optical submarine repeater 14 and the like. That is, at this time, the relay contact 6 is switched from the (a) side to the (b) side, and the make contact of the relay contact 7 is closed, so that the power supply current from the C station flowing from the undersea grounding electrode 9 is generated. Relay contact 7, relay contact 6, optical submarine cable 13
And, it flows into the power feeding device 15 of the C station via the optical submarine repeater 14.
【００４２】その後、給電装置１８と給電装置１２との
間に流れている給電電流が、光海底中継器１１および１
７を動作させるための通常電流に設定される（給電装置
１５による給電電流も光海底中継器１４を動作させるた
めの通常電流に設定される）。After that, the power supply current flowing between the power supply device 18 and the power supply device 12 is changed to the optical submarine repeaters 11 and 1.
7 is set to the normal current (the current supplied by the power supply device 15 is also set to the normal current for operating the optical submarine repeater 14).
【００４３】以上の結果、図１に示す光海底ケーブル通
信システムにおいて、給電装置１８と給電装置１２との
間で両端給電が完成し、給電装置１５による片局給電が
完成する。これによって、海底分岐装置１および全ての
光海底中継器１１，１４および１７への給電が可能とな
り、Ａ局，Ｂ局およびＣ局の相互間での通信が可能とな
る。As a result of the above, in the optical submarine cable communication system shown in FIG. 1, both-end power supply is completed between the power supply device 18 and the power supply device 12, and single-station power supply by the power supply device 15 is completed. As a result, the submarine branching device 1 and all the optical submarine repeaters 11, 14 and 17 can be supplied with power, and communication between stations A, B and C is possible.
【００４４】第２に、海底分岐装置１を含む光海底ケー
ブル通信システムにおける給電の停止時（給電電流の立
下げ時）の動作について説明する。Secondly, the operation of the optical submarine cable communication system including the submarine branching device 1 when the power supply is stopped (when the power supply current is lowered) will be described.
【００４５】まず、Ｃ局の給電装置１５が給電を停止す
る。First, the power supply device 15 of the C station stops the power supply.
【００４６】次に、Ａ局とＢ局との間の給電電流（Ｉと
する）が減少されていき、この給電電流ＩがＩ3 ＜Ｉ＜
Ｉ2 となるように設定される。Next, the feed current (denoted as I) between the A station and the B station is reduced, and this feed current I becomes I 3 <I <
It is set to be I 2 .
【００４７】この状態でリレー駆動巻線２の駆動は解除
となり（上述したようにリレー駆動巻線２の駆動解除電
流は最小感動電流と同一のＩ2 である）、リレー駆動巻
線２に対応するリレー接点７のメーク接点が開放され
る。この時点で給電装置１２および１８の給電によって
海底分岐装置１の内部の回路（両端給電の給電路に関す
る部分）は一定の値の電位（Ｖｎとする）になっている
ものとする。In this state, the drive of the relay drive winding 2 is released (as described above, the drive release current of the relay drive winding 2 is I 2 which is the same as the minimum moving current), and corresponds to the relay drive winding 2. The make contact of the relay contact 7 is opened. At this time, it is assumed that the internal circuit of the submarine branching device 1 (the portion related to the power feeding path for both-end power feeding) has a constant potential (Vn) by the power feeding from the power feeding devices 12 and 18.
【００４８】この段階で、Ｃ局の給電装置１５は、光海
底ケーブル１３および光海底中継器１４が電位Ｖｎとな
るように給電を行う。なお、この場合に、給電装置１５
から供給される給電電流（リレー接点６の（ｂ）側の接
点を通る電流）は、高い抵抗値を持つ抵抗８の存在によ
って非常に小さくなる。At this stage, the power feeding device 15 of the C station feeds power so that the optical submarine cable 13 and the optical submarine repeater 14 have the potential Vn. In this case, the power supply device 15
The power supply current (current passing through the contact on the (b) side of the relay contact 6) supplied from is extremely small due to the presence of the resistor 8 having a high resistance value.
【００４９】このような状態で、Ａ局とＢ局との間の給
電電流がさらにＩ3 まで降下すると、給電電流Ｉがリレ
ー駆動巻線３の駆動解除電流Ｉ3 以下となり、リレー駆
動巻線３に対応するリレー接点６は（ｂ）側から（ａ）
側に切り替わる。In such a state, when the power supply current between the station A and the station B further drops to I 3 , the power supply current I becomes less than the drive release current I 3 of the relay drive winding 3 , and the relay drive winding Relay contact 6 corresponding to 3 is from (a) to (a)
Switch to the side.
【００５０】この切替わりの時点において、海底分岐装
置１内の両端給電の給電路に関する部分は上述のように
電位Ｖｎの状態にあり、光海底ケーブル１３および光海
底中継器１４も上述のように電位Ｖｎの状態に設定され
ている。したがって、光海底ケーブル１３および光海底
中継器１４がリレー接点６を介して給電装置１８と給電
装置１２との間の給電路（両端給電の給電路）に接続さ
れる際には、光海底ケーブル１３および光海底中継器１
４の電位は変化しない。よって、従来の海底分岐装置
（図２中の海底分岐装置１９）による給電制御であれば
発生していたサージ電流の発生を回避することができ
る。At the time of this switching, the portion of the submarine branching device 1 relating to the power feeding path for both ends feeding is in the state of the potential Vn as described above, and the optical submarine cable 13 and the optical submarine repeater 14 also have the same configuration as described above. It is set to the state of the potential Vn. Therefore, when the optical submarine cable 13 and the optical submarine repeater 14 are connected to the power feeding path (power feeding path of both ends power feeding) between the power feeding device 18 and the power feeding device 12 via the relay contact 6, the optical submarine cable 13 and optical submarine repeater 1
The potential of 4 does not change. Therefore, it is possible to avoid the generation of the surge current that would occur if the power supply control was performed by the conventional submarine branching device (submarine branching device 19 in FIG. 2).
【００５１】その後、上記の給電電流Ｉが０Ａまで減少
され、給電装置１５による給電に基づく光海底ケーブル
１３および光海底中継器１４の電位が０Ｖに減少されれ
ば、図１に示す光海底ケーブル通信システムへの給電が
全て停止される。上述のように、この停止までの過程で
サージ電流が発生することはない。After that, if the power supply current I is reduced to 0 A and the potentials of the optical submarine cable 13 and the optical submarine repeater 14 based on the power feeding by the power feeding device 15 are reduced to 0 V, the optical submarine cable shown in FIG. All power to the communication system is stopped. As described above, no surge current is generated in the process up to this stop.
【００５２】[0052]
【発明の効果】以上説明したように本発明は、分岐構成
となる光海底ケーブル通信システムにおける給電の開始
時および停止時（給電電流の立上げ時および立下げ時）
にサージ電流が発生しないように制御することにより、
当該サージ電流に起因する海底分岐装置内のリレー接点
や海底分岐装置の直近に接続される光海底中継器等の劣
化を防ぐことができるという効果がある。As described above, according to the present invention, when power feeding is started and stopped in the optical submarine cable communication system having a branch configuration (when power feeding current is started and when power feeding is stopped).
By controlling so that surge current does not occur,
There is an effect that it is possible to prevent deterioration of a relay contact in the submarine branching device, an optical submarine repeater connected in the immediate vicinity of the submarine branching device, etc. due to the surge current.
【００５３】また、以上のような効果が得られることに
より、複数の海底分岐装置を用いて複雑な分岐構成を有
する光海底ケーブル通信システムを構築する際にサージ
電流による装置等の劣化を考慮する必要がなくなり、海
底分岐装置の応用範囲を拡張することができる（複雑な
分岐構成を有する光海底ケーブル通信システムの構築の
ために考慮すべき海底分岐装置に関する障害の１つを除
去することができる）という効果がある。Further, by obtaining the above effects, when constructing an optical submarine cable communication system having a complicated branch configuration using a plurality of submarine branching devices, deterioration of the devices due to surge current is considered. It eliminates the need and can extend the application range of the submarine branching device (can remove one of the obstacles related to the submarine branching device to be considered for the construction of the optical submarine cable communication system having a complicated branching configuration. ) Is effective.
【図１】本発明の海底分岐装置の一実施例が適用される
光海底ケーブル通信システムの構成を示す図である。FIG. 1 is a diagram showing a configuration of an optical submarine cable communication system to which an embodiment of a submarine branching device of the present invention is applied.
【図２】従来の海底分岐装置の一例が適用される光海底
ケーブル通信システムの構成を示す図である。FIG. 2 is a diagram showing a configuration of an optical submarine cable communication system to which an example of a conventional submarine branching device is applied.
１，１９ 海底分岐装置 ２，３，５ リレー駆動巻線 ４，６，７ リレー接点 ８ 抵抗 ９ 海中接地用電極 １０，１３，１６ 光海底ケーブル １１，１４，１７ 光海底中継器 １２，１５，１８ 給電装置 1,19 Submarine branching device 2,3,5 Relay drive winding 4,6,7 Relay contact 8 Resistance 9 Subsea grounding electrode 10,13,16 Optical submarine cable 11,14,17 Optical submarine repeater 12,15, 18 Power supply device
Claims (1)
Ｂ局およびＣ局からの２本の分岐光海底ケーブルとを接
続する海底分岐装置において、 両端給電の給電路の給電電流の値を検出する第１のリレ
ー駆動巻線と、 この第１のリレー駆動巻線の最小感動電流および駆動解
除電流よりも小さな値の最小感動電流および駆動解除電
流を有し両端給電の給電路の給電電流の値を検出する第
２のリレー駆動巻線と、 片局給電の給電路にメーク接点が挿入される前記第１の
リレー駆動巻線に対応する第１のリレー接点と、 共通接点が分岐光海底ケーブルに接続されメーク接点が
前記第１のリレー接点に接続されブレーク接点が両端給
電の給電路に接続される前記第２のリレー駆動巻線に対
応する第２のリレー接点と、 片局給電の給電路において前記第１のリレー接点と並列
に接続されておりサージ電流を抑制するのに十分な大き
さの抵抗値を持つ抵抗とを有することを特徴とする海底
分岐装置。1. A submarine branching device that connects one trunk optical submarine cable from A station and two branch optical submarine cables from B station and C station, in a submarine branching device, the value of a feeding current of a feeding line of both ends feeding. And a first relay drive winding for detecting a current, and a minimum feed current and a drive release current that are smaller than the minimum touch drive current and drive release current of the first relay drive winding. A second relay drive winding for detecting the value of the current, a first relay contact corresponding to the first relay drive winding in which a make contact is inserted in a power supply path for single-station power supply, and a common contact branch A second relay contact corresponding to the second relay drive winding, which is connected to the optical submarine cable, a make contact of which is connected to the first relay contact and a break contact of which is connected to a power feeding path for feeding both ends; In the power feeding path, Submarine branching unit, characterized in that it comprises a resistor and having a resistance value large enough to suppress the connected and surge current in parallel with the relay contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4274919A JP3063425B2 (en) | 1992-09-21 | 1992-09-21 | Undersea branching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4274919A JP3063425B2 (en) | 1992-09-21 | 1992-09-21 | Undersea branching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06104799A true JPH06104799A (en) | 1994-04-15 |
| JP3063425B2 JP3063425B2 (en) | 2000-07-12 |
Family
ID=17548372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4274919A Expired - Lifetime JP3063425B2 (en) | 1992-09-21 | 1992-09-21 | Undersea branching device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3063425B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09181654A (en) * | 1995-12-21 | 1997-07-11 | Kokusai Denshin Denwa Co Ltd <Kdd> | Feeding path changeover circuit |
| JPH09233004A (en) * | 1996-02-20 | 1997-09-05 | Kokusai Denshin Denwa Co Ltd <Kdd> | Feeding path changeover circuit |
| US6770373B1 (en) | 1998-12-25 | 2004-08-03 | Henkel Corporation | Water-based metal surface treatment composition for forming lubricating film with excellent marring resistance |
| JP2004248274A (en) * | 2003-02-11 | 2004-09-02 | Alcatel | Branch unit incorporated in submarine telecommunication system, submarine telecommunication system, and method for reconstituting submarine telecommunication system |
| US7058305B2 (en) | 2002-02-08 | 2006-06-06 | Mitsubishi Denki Kabushiki Kaisha | Optical submarine communication system and surge suppressing apparatus of the optical submarine communication system |
| WO2017204097A1 (en) * | 2016-05-25 | 2017-11-30 | 日本電気株式会社 | Grounding circuit, electrical device, grounding control method, and grounding control program |
| WO2019031415A1 (en) * | 2017-08-07 | 2019-02-14 | 日本電気株式会社 | Grounding circuit, electrical apparatus, grounding control method, and grounding control program |
| CN110176699A (en) * | 2019-06-24 | 2019-08-27 | 中国电子科技集团公司第三十四研究所 | A kind of the seabed splitter and application method of single-core cable constant-current supply system |
-
1992
- 1992-09-21 JP JP4274919A patent/JP3063425B2/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09181654A (en) * | 1995-12-21 | 1997-07-11 | Kokusai Denshin Denwa Co Ltd <Kdd> | Feeding path changeover circuit |
| JPH09233004A (en) * | 1996-02-20 | 1997-09-05 | Kokusai Denshin Denwa Co Ltd <Kdd> | Feeding path changeover circuit |
| US6770373B1 (en) | 1998-12-25 | 2004-08-03 | Henkel Corporation | Water-based metal surface treatment composition for forming lubricating film with excellent marring resistance |
| US7058305B2 (en) | 2002-02-08 | 2006-06-06 | Mitsubishi Denki Kabushiki Kaisha | Optical submarine communication system and surge suppressing apparatus of the optical submarine communication system |
| JP2004248274A (en) * | 2003-02-11 | 2004-09-02 | Alcatel | Branch unit incorporated in submarine telecommunication system, submarine telecommunication system, and method for reconstituting submarine telecommunication system |
| WO2017204097A1 (en) * | 2016-05-25 | 2017-11-30 | 日本電気株式会社 | Grounding circuit, electrical device, grounding control method, and grounding control program |
| CN109155520A (en) * | 2016-05-25 | 2019-01-04 | 日本电气株式会社 | Earthed circuit, electric device, ground connection control method and ground connection control program |
| US10666044B2 (en) | 2016-05-25 | 2020-05-26 | Nec Corporation | Grounding circuit, electrical device, grounding control method, and grounding control program |
| WO2019031415A1 (en) * | 2017-08-07 | 2019-02-14 | 日本電気株式会社 | Grounding circuit, electrical apparatus, grounding control method, and grounding control program |
| US11488792B2 (en) | 2017-08-07 | 2022-11-01 | Nec Corporation | Grounding circuit, electrical apparatus, grounding control method, and grounding control program |
| CN110176699A (en) * | 2019-06-24 | 2019-08-27 | 中国电子科技集团公司第三十四研究所 | A kind of the seabed splitter and application method of single-core cable constant-current supply system |
| CN110176699B (en) * | 2019-06-24 | 2024-02-13 | 中国电子科技集团公司第三十四研究所 | Submarine branching device of single-core cable constant-current power supply system and use method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3063425B2 (en) | 2000-07-12 |
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