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

A relay protection, high-voltage technology, applied in emergency protection circuit devices, electrical components, circuit devices, etc., can solve the problems that the observation network cannot operate normally, cannot meet the large-scale submarine observation network, etc., and improve the scalability. , long service life and fast isolation of faults

Active Publication Date: 2018-10-26
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

Examples

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Embodiment 1

[0039] Embodiment 1: as figure 1 As shown, the high-voltage switching branch of the submarine observation network with fast relay protection includes four parts: a monitoring and control unit, a high-voltage switching unit, a power supply unit and a starting unit. The monitoring and control unit is composed of three current sensors 1 , voltage sensors 2 and microcontroller 3 . The measured current ports of the three current sensors 1 are respectively connected to the two sections of the submarine main cable and the submarine branch cable connected to the high-voltage switching branch of the submarine observation network with fast relay protection, and the output ports are connected to the microcontroller 3 The input port is used for monitoring the current of the three nodes of the splitter and inputting the measured current data into the microcontroller. The measured voltage port of the voltage sensor 2 is connected to the submarine trunk cable connected to the splitter, and...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02H7/26
CPCH02J3/005H02H7/26
Inventor 吕枫郑劭铎周怀阳林实俊耿坤黄龙翔
Owner TONGJI UNIV
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