Constant voltage and constant current hybrid power supply system for submarine observation network

Abstract

The invention relates to a constant-voltage and constant-current hybrid power supply system for a submarine observation network, which includes a monitoring and control unit and a power supply unit. The monitoring and control unit is composed of a current sensor, a relay group and a control module. The control module judges the working mode of the submarine observation network through the input current of the current sensor, and selects an appropriate power supply mode by changing the state of the relay group. The power supply unit consists of a Zener diode and a current-voltage DC conversion module, which are used as two power supply modes under the light load and heavy load modes of the submarine observation network respectively. The present invention can monitor the input current of the submarine main equipment in real time, and automatically change the power supply mode according to the input current level, so the input current range is large, the use flexibility is high, and it can be applied to the submarine observation network with two transmission modes of constant voltage and constant current. And the reliability is high, which greatly increases the service life of the submarine backbone equipment.

Description

technical field [0001] The invention belongs to the technical field of ocean observation, and in particular relates to a constant-voltage and constant-current hybrid power supply system for a seabed observation network. Background technique [0002] 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. Among them, the repeater is used to amplify the optical signal and compensate for the signal attenuation during long-distance optical fiber transmission; the splitter is the hub node connecting the main submarine cable and the branch submarine cable, and plays an irreplaceable role in system expansion. At the same time, when the main cable or branch cable fails, the splitter can isolate the faulty area, so as to ensure that the rest of the system can still operate normally. The design life of the submarine ob...

AI Technical Summary

Problems solved by technology

However, in a large-scale and comprehensive submarine observation network with constant voltage power transmission, in addition to meeting the power supply requirements of repeaters and splitters, it is also necessary to meet the power supply requirements of primary and secondary junction boxes and instrument platforms. Current increases with subsea payload

When the transmission current is large, the Zener diodes that supply power to the repeater and branch will generate a lot of heat energy, which will cause them to be easily damaged by overheating in the compact repeater and branch, greatly reducing the power of the repeater and branch. device reliability

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