海底通信光缆是国际通信流量的主要载体, 国际互联网带宽加速增长推动了海底通信光缆的加速建设。介绍了海底通信光缆水下设备供电系统基本结构, 分析了海底光中继器、海底分支单元和远供电源设备等器件的工作原理及内部电路设计, 提出了海底通信光缆水下设备供电系统设计方法, 并结合案例分析供电系统的切换保护机制。

Submarine communication optical cable is the main carrier of international communication, and the accelerated growth of international internet bandwidth has promoted the accelerated construction of submarine communication optical cable. This paper introduces the basic structure of the power supply system for submarine communication optical cable underwater equipment, analyzes the working principles and internal circuit design of submarine repeaters, submarine branch unit, and power supply equipment. This paper proposes the design method of power supply system design for submarine communication optical cable underwater equipment, and analysis the switching protection mechanism of the power supply system combined with a case.