High Voltage Switching Branch for Submarine Observation Network with Fast Relay Protection

Abstract

The invention relates to a high-voltage switching branch device of a submarine observation network with fast relay protection, which includes a monitoring and control unit, a high-voltage switching unit, a power supply unit and a starting unit. The invention realizes the high-voltage switching function through the all-solid-state switch, and can monitor the voltage of the submarine trunk cable of the branch in real time. When a grounding fault occurs in the submarine cable, the fault isolation method of the submarine cable implemented inside the micro-controller in the monitoring and control unit automatically Identify the fault mode and control the switch to cut off the high-voltage power switch, and quickly isolate the faulty submarine cable section online. The invention has the characteristics of fast fault automatic identification and isolation speed, and can provide guarantee for the long-term operation of the seabed observation network.

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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