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Realizing method for single-ended power supply of submarine cable transmission system with repeater through monopolar cable

A transmission system, single-ended power supply technology, applied in power supply devices, line transmission parts, etc., can solve problems such as electrochemical corrosion, and achieve the effect of increasing service life and reducing electrochemical corrosion rate.

Active Publication Date: 2014-04-02
CHINA ELECTRONICS TECH GRP NO 23 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a method for realizing the single-end power supply of the single-end cable of the submarine relay submarine cable transmission system, so as to solve the problem of single-end power supply of the submarine relay system and the problem of electrochemical corrosion

Method used

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  • Realizing method for single-ended power supply of submarine cable transmission system with repeater through monopolar cable
  • Realizing method for single-ended power supply of submarine cable transmission system with repeater through monopolar cable
  • Realizing method for single-ended power supply of submarine cable transmission system with repeater through monopolar cable

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Embodiment 1

[0030] Example 1, see Figure 4. Unipolar cable single-end power supply submarine relay submarine cable transmission system consists of shore power supply 1, submarine photoelectric composite cable 2, submarine repeater 3, single wire ground electrode 4, submarine joint box 5, submarine cable 6 and sensors 7 composition. Wherein, the shore power supply 1 is a DC power supply or a three-phase AC power supply that can use constant current output. The submarine photoelectric composite cable 2 can use a coaxial photoelectric composite cable or a twisted type photoelectric composite cable. The submarine repeater 3 uses an erbium-doped optical fiber amplifier to amplify the optical signal. The end of the single wire-type grounding electrode 4 is in direct contact with seawater, forming a circuit loop with the seawater. The trunked submarine cable transmission system includes one or several submarine joint boxes 5 . The subsea junction box 5 realizes photoelectric separation. T...

Embodiment 2

[0031] Example 2, see Figure 5 . The unipolar cable single-end power supply submarine relay submarine cable transmission system consists of a shore power supply 1, a submarine photoelectric composite cable 2, a submarine repeater 3, a radial ground electrode 4, a submarine joint box 5, a submarine cable 6 and a sensor 7 constitute. The sea is the ground. Considering that the typical current value in the subsea relay system is 1A, the wire diameter is 40mm, and the current density will reach 800A / m 2 . The consumption rate of electrodes may increase exponentially with increasing current density. In order to reduce the current density, a radial ground electrode with multiple radial arms can be used to reduce the current density in the electrode, such as Image 6 shown. exist Image 6 Among them, the end of the submarine photoelectric composite cable 2 is connected to the submarine joint box 5 . The radial ground electrode 4 is composed of a plurality of radial arms, and...

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Abstract

The invention discloses a realizing method for single-ended power supply of a submarine cable transmission system with a repeater through a monopolar cable, relates to the field of sensing employing the submarine cable transmission system with the repeater, and aims to solve the technical problems of single-ended power supply and electrochemical corrosion of a submarine system with a repeater. The realizing method is characterized in that a shoreside power supply (1) is used for providing electric power for the whole system through a submarine photoelectric composite cable (2); a submarine repeater (3) is used for amplifying an optical signal; the connecting end of a grounding electrode (4) is hermetically connected with the submarine repeater (3) or submarine junction boxes (5), and the tail end of the grounding electrode (4) is in direct contact with seawater, and forms a loop with the seawater; the submarine junction boxes (5) are used for realizing photoelectric separation; submarine cables (6) are used for connecting the submarine junction boxes (5) with sensors (7). According to the method, a proper material and a proper structure are selected, so that the electrochemical corrosion rate of the grounding electrode can be effectively reduced, and the service life of the grounding electrode is prolonged.

Description

technical field [0001] The invention relates to the field of submarine sensing, in particular to a method for realizing single-end power supply of a single-pole cable in a submarine relay submarine cable transmission system. technical background [0002] In order to meet the needs of the international communication market, national ocean strategy and ocean acoustic detection, people pay more and more attention to the relayed submarine cable transmission system. The relayed submarine cable transmission system is mainly composed of shore-side power supply, submarine photoelectric composite cable, and submarine repeater. Among them, the submarine repeater is the key device of the whole system, which is composed of the repeater cabin, the optical amplifier module in the cabin, the power supply module and its auxiliary modules. The repeater cabin is usually made of a certain thickness of corrosion-resistant metal, which is used to ensure that each module located therein has a no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/44
Inventor 陈绪兴
Owner CHINA ELECTRONICS TECH GRP NO 23 RES INST
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