Power self-matching voltage stabilization type constant-current underwater power supply and power supply method thereof

Abstract

The invention belongs to the technical field of ocean observation, and particularly relates to a power self-matching voltage stabilization type constant-current underwater power supply which convertsconstant current provided by a shore-based constant-current source through a submarine cable into constant voltage required by an electric load and supplies power to the electric load. The constant-current underwater power supply comprises an input detection circuit, a power conversion circuit, an output current detection circuit, a load (R3) and a power matcher circuit, one end of the input detection circuit is connected with a shore-based constant current source through an external submarine cable, the other end of the input detection circuit is connected with the input end of the power conversion circuit and the input end of the power matcher circuit, and the output end of the power conversion circuit is connected with a series circuit formed by connecting the output current detection circuit and an external electric load in series. And the output end of the power matcher circuit is respectively connected with a load (R3) and an output current detection circuit.

Description

technical field [0001] The invention belongs to the technical field of ocean observation, and in particular relates to a voltage-stabilized constant-current underwater power supply with self-matching power and a power supply method thereof. Background technique [0002] As an emerging ocean observation platform, the submarine observation network can realize all-weather, long-term, continuous and real-time observation of the ocean, among which electric energy is an important basis for the normal operation of the submarine observation network. At present, the power supply of the submarine observation network is divided into two modes: constant current power supply and constant voltage power supply, and the constant current power supply mode has become an important model for transoceanic submarine communication and submarine observation network due to its strong ability to resist short-circuit of transmission cables and good system robustness. An important choice for the system...

AI Technical Summary

Problems solved by technology

However, due to the non-constant power working mode of the underwater power load of the submarine observation network, the underwater power supply device under the constant current working mode will cause input voltage fluctuations due to power fluctuations of the power load, which will lead to fluctuations in the supply voltage of the shore-based constant current source. At the same time, the distribution parameters of long-distance submarine cables are numerous, and the fluctuation of power supply voltage will also lead to problems such as large reactive power loss of submarine cables.

[0003] In order to solve this problem, the invention patent "CN201610089978.9" "An Underwater Constant Current and Constant Voltage Conversion Device Applicable to Submarine Constant Current Power Supply System" proposes a method that uses simulated loads to make the underwater power supply constant power output, and then obtain a stable voltage method; however, when the load of the underwater power supply is light, most of the power will be consumed by the simulated load, resulting in a low power utilization rate of the power supply system; the invention patent with the patent number "CN 201...

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