直流变换器在电力通信系统的应用研究

DC-DC converter applied research in power communication systems

直流变换器(以下简称DC-DC)替代通信电源系统已经在变电站中得到大量应用,通过对实际应用情况的调查分析,发现DC-DC电源模块的设计普遍存在耐冲击电流能力差的问题;同时直流供电网络的设计采用传统的空开保护时,由于不能快速分断故障回路,存在系统电压跌落的隐患。结合通信设备负载的特点,针对DC-DC电源模块与直流供电网络设计存在的问题,从系统保护方案入手,研究了DC-DC电源系统配置的基本原则和要求,提出了解决问题的技术方案和试验数据,供电力用户参考。

DC-DC converter is already applied widely in transformer substation in place of communication power supply. Through the investigation and analysis of the practical application, the problem of poor impact resistance with the design of DC-DC power modules is found. The DC power supply network using the traditional air-break switch protection, fault circuit can not be fast-breaking as a result of system voltage drop. Combining the load characteristics of communications equipment and the existing design problem of DC-DC power modules and DC power supply network, this paper researches on the basic principles and requirements of the DC-DC power system configuration and puts forward the technical programs and test data to solve the problem, for the reference of power users.