Brancher and submarine observation network with submarine cable open direction determination and isolation

By designing a brancher with open-circuit direction determination and isolation functions of submarine cables, the MM0 sea electrode and brancher circuit are used to achieve independent fault isolation, which solves the power supply and communication interruption caused by open-circuit faults in submarine observation network, and ensures the convenience of continuous operation and construction of the equipment.

CN118983745BActive Publication Date: 2025-03-21JIANGSU HENGTONG MARINE CABLE SYST CO LTD
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Patent Information

Application Number
CN202411456888.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-10-18
Publication Date
2025-03-21
Estimated Expiration
2044-10-18

AI Technical Summary

Technical Problem

In the subsea observation network, cracks and pores may occur during the splicing process of submarine observation network, resulting in open circuit failures and affecting power supply and communication services. It is difficult for the existing technology to perform autonomous fault isolation when the main line is opened.

Method used

A brancher with open-circuit direction determination and isolation of the submarine cable is designed. Through the MM0 sea electrode and brancher circuit, including a constant current to constant voltage module, a high-voltage unidirectional conduction device and a tray connection, the use of relays is achieved to achieve independent identification and isolation, and the use of relays is avoided.

Benefits of technology

No matter which side of the branch cable open circuit fault occurs, the branch can be independently identified and isolated to ensure that the power consumption equipment does not interrupt its work, simplify the structure of the shore base station, and support access to the power supply network in any direction.

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Abstract

The present invention discloses a branching device with submarine cable open circuit direction determination and isolation and a submarine observation network, comprising: an MM0 submarine electrode and a branching device circuit, wherein the branching device circuit comprises a constant current to constant voltage module, a trunk port A, a trunk port B, a branch port C and a through-bin connector port G, a first high-voltage resistant unidirectional conduction device D1, a second high-voltage resistant unidirectional conduction device D2, a third high-voltage resistant unidirectional conduction device D3, a fourth high-voltage resistant unidirectional conduction device D4, a fifth high-voltage resistant unidirectional conduction device D5 and a sixth high-voltage resistant unidirectional conduction device D6, and the branching devices are distributed at intervals and sequentially connected in series on the trunk optical cable between the first shore-based power supply and the second shore-based power supply. Through the above-mentioned method, the branching device with submarine cable open circuit direction determination and isolation and the submarine observation network described in the present invention can autonomously identify and isolate when an open circuit fault occurs in the trunk optical cable, and use the cooperation of the MM0 submarine electrode to switch the current loop to ensure that the connected electrical equipment does not interrupt work.
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