Seabed observational network high-voltage switching type splitter with rapid relay protection

Abstract

The invention relates to seabed observational network high-voltage switching type splitter with rapid relay protection. The splitter comprises a monitoring and control unit, a high voltage switching unit, a power supply unit and a starting unit. According to the invention, through a full solid state switch, a high-voltage switching function is achieved; voltage of a seabed main cable of the splitter can be monitored in real time; when the seabed cable is subjected to grounding faults, through a cable seabed cable fault isolation method achieved in a microcontroller in the monitoring and control unit, fault modes are automatically identified and a high voltage change-over switch is controlled to switched off; faulted seabed cable segments are rapidly isolated in an online manner. Accordingto the invention, the splitter is characterized by automatic fault identification and rapid isolation speed; and long-term operation of seabed observational network can be ensured.

Description

technical field [0001] The invention belongs to the technical field of marine observation, and in particular relates to a high-voltage switching branch device for a seabed observation network with fast relay protection. Background technique [0002] The seabed observation network is a seabed infrastructure that realizes long-term, real-time, and large-scale in-situ observations of the seabed. Sustained and stable power supply and communication are the premise and basis for the long-term operation of the submarine observation network. The submarine observation network is mainly composed of shore base stations, submarine primary and secondary junction boxes, submarine instrument platforms, photoelectric composite submarine cables, splitters and repeaters. [0003] The splitter is the hub node connecting the backbone submarine cable and the branch submarine cable, and plays an irreplaceable role in system expansion and protection. As the basic carrier of energy and communicat...

AI Technical Summary

Problems solved by technology

In this fault isolation method, the observation network will not be able to operate normally during the entire fault location and isolation process.

At the same time, there are no branchers and effective and reliable fault isolation methods for submarine observation networks in the market, which cannot meet the needs of large-scale submarine observation network construction.

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