JPS6194527A - Method of supplying electricity - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a power feeding method for a power feeding device in a submarine cable system, and more particularly to a power feeding method when laying a submarine cable.

[Conventional technology]

Normally, submarine cable power supply methods supply power to the submarine repeater from a power supply device installed at a land station, but when the cable is laid, power is supplied to the submarine repeater from a power supply device installed at a shipboard station. Generally, when laying a cable, a meeting line device is used at each station as a means of communication between land stations and shipboard stations, but this meeting line device cannot be used unless power is supplied to the submarine repeater. Normally, a power supply device installed at the shipboard station is used.

FIG. 2 shows a configuration example of a power supply system for explaining a power supply method during cable installation of a conventional submarine cable system. The land station A has an input/output terminal IA for one communication signal,
Cable termination device 2 having a power separator P-wave device 8A for separating the power sent from the onboard station B from the communication signal
The shipboard station B is made up of people, and like the land station A,
The shipboard station B has a cable termination device 2B equipped with an input/output terminal IB and a power separator 8B (in this case, serves to combine power with the communication signal), and furthermore, the shipboard station B has a power supply device 4. We are prepared. Between land station A and shipboard station B, there are n submarine repeaters R+ eR* *... with an amplification function.
A submarine cable C is connected through Rn, and these submarine repeaters at-Rt, . . . Rn operate by receiving power from the power supply device 4.

In such a configuration, the power supply current is the electric power from the power supply device 4 on the shipboard surface B to the cable termination device 2B! i! 1IF1
The submarine repeater Rn of the submarine cable C via the wave transmitter 8B,
..., R, , R, and then flows to the cable termination device '2A of land station A. And power separation f wave device 8A
Power is supplied to each device through the

On the other hand, the communication signal from land station A is sent to the input/output terminal IA and the power separation f-wave device 8A for the two cable terminal devices.

The signal is sent to the input/output terminal IB via the submarine repeaters R+e Rle..., Rn, and the power separation f-wave unit 8B of the cable termination device 2B. Furthermore, the communication signal from the ship's surface B is transmitted via a path opposite to the above.

[Problem that the invention seeks to solve]

In the conventional power supply method described above, the longer the distance of the submarine cable and the greater the supply current, the greater the output power and the larger the scale of the device, so the power supply device is installed on the ship. However, there were disadvantages in that it was unreasonable due to space issues, and furthermore, it led to a decrease in economic efficiency.

An object of the present invention is to provide a power feeding method that allows a power feeding device provided at a land station to function according to commands from onboard a ship during cable installation.

[Means for solving problems]

In order to achieve the above object, the present invention provides means for emitting a control signal on the ship's surface, detects the control signal at the land station, and starts the power supply device installed at the land station based on the detected signal. and means for controlling the stoppage. Then, power from the power supply device is supplied to the submarine repeater.

That is, in the power supply method according to the present invention, when laying a submarine cable that connects a land station and a ship's surface via a submarine repeater, a control signal is sent from the ship's surface, and the control signal is transmitted to the ship's surface. The station receives and detects the signal, and based on this detection, the power supply device of the land station is activated to supply power to the submarine repeater.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a configuration diagram of an embodiment of a power supply system to which a power supply method according to the present invention is applied. Note that the same reference numerals as those used in FIG. 2 showing an example of a conventional configuration represent the same constituent elements. The difference between this embodiment and the conventional 41.1 configuration is that the power supply device 4 is provided at the land station. In addition, the shipboard surface B has the same input/output terminals IB as before,
In addition to the cable termination device 2B that connects the power separator e-wave device 8B, it also includes a control signal generation circuit 6 that generates a low-frequency control N (a signal Sc), and converts this control signal Sc into a communication signal through the power separator f-wave device 8B. On the other hand, the land station personnel are equipped with the same input/output terminal IA as before, and two cable termination devices having a power separator P-wave device 8A, as well as a submarine cable C. submarine repeater Rn,...R,
, a branch circuit 7 that branches the above-mentioned control signal Be sent from the ship's surface B via R1 after passing through the power separator P-wave device 8A, and detects the control signal Sc from the branch circuit 7. A detection circuit 8 that outputs a detection signal SD.The above-mentioned power supply device 4 starts and stops based on this detection signal SD, and when started, the power is transferred to a branch circuit 7.Power separation f Submarine Cape/I1 via wave device 8A
0 submarine repeaters R1, R, . . . e Rn.

Next, a power supply method in the power supply system configured as described above will be explained.

First, the low frequency control signal Sc sent out from the low frequency control signal generation circuit 5 is transferred to the submarine cable C by the coupling circuit 6.
After being combined with the cable terminal device 2B, the power separating P-wave device 8B, the submarine repeater Rne...,
R2, R1, the amount of power provided to the two land station cable termination devices! The signal is sent to the detection circuit 8 via the LF wave generator 8A and the branch circuit 7.

In this way, the detection circuit 8 detects the control signal 8c from the control signal generation circuit 5 on the shipboard surface B, outputs the detection signal SD, and turns on the power supply device 4 by this detection signal SD. The power supply device 4 that has been activated and activated is
The output power is passed through the above-mentioned route to the submarine repeater Rs.
e R1*...Supplied to Rn.

When the control signal generation circuit 5 stops sending out the control signal Sc, the detection circuit 8 stops sending out the detection signal 3D, and thereby the power supply device 4 stops supplying power.

In this embodiment, the power supply device is started and stopped depending on the presence or absence of the control signal Sc, but the following modifications are also possible, for example.

Two signals having different frequencies are used as the control signal Sc of the control signal generation circuit 5, one of which is used for starting the power supply device board and the other for stopping it. That is,
The power supply device 4 is activated by one of the control signals, continues to operate even without the control signal after activation, and the power supply device 4 is stopped when the other control signal is detected. However, in this case, the detection circuit 8 needs to be configured to be able to detect signals having two different frequencies.

〔Effect of the invention〕

As explained above, the present invention enables starting and stopping of the power feeding device provided at the land station by remote control from the shipboard station during cable installation, so that the above-mentioned space problems and reduction in economic efficiency can be avoided. Success is achieved by eliminating problems.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an embodiment of a power supply system to which a power supply method according to the present invention is applied, and FIG. 2 is a diagram showing an example of the configuration of a conventional power supply system. LA, IB... Input/output terminals. 2A, 2B... Cable termination device. 8A, 8B...Power separation F wave device. 4......Power supply device. 5... Control signal generation circuit. 6...... Combined circuit-17... Branch circuit. 8...Detection circuit, A...Land station. B...... Shipboard station, C... Submarine cable. 8~Rn...Undersea repeater. 8c......Control signal e SD...
・Detection signal.

Claims (1)

[Claims] When installing a submarine cable that connects a land station and a shipboard station via a submarine repeater, a control signal is sent from the shipboard station, the control signal is received and detected by the land station, and this detection is performed. A power supply method characterized by activating a power supply device of the land station based on the above and supplying power to the submarine repeater.