韩全胜 梁   巍 高   扬（北京市建筑设计研究院有限公司，北京市 100045）

Study on Overcurrent Protection and Type Selection of Breakers for Low -voltage DC Distribution System

HAN Quansheng LIANG Wei GAO Yang（Beijing Institute of Architectural Design（Group）Co.，Ltd.，Beijing 100045，China）

    Abstract：The characteristics of and protection measures for the overload and short circuit in the low-voltage DC distribution system are analyzed from the perspective of overcurrent protection for distribution system to propose the calculation method of prospective short-circuit current in the low-voltage DC distribution system. The application scheme of DC breaker is analyzed combining the grounding type.

   Key words：low-voltage DC distribution system；grounding type；overcurrent protection；overload protection；short-circuit protection；breaker；storage battery；prospective short-circuit current

  摘 要：从配电系统过电流保护的角度分析低压直流配电系统过负荷及短路的特点和采取的保护措施，给出低压直流配电系统预期短路电流的计算方法。结合接地型式，对直流断路器的应用方案进行分析。

  关键词：低压直流配电系统；接地型式；过电流保护；过负荷保护；短路保护；断路器；蓄电池；预期短路电流

     中图分类号：TU852                文献标识码：A

      doi：10. 3969 / j. issn. 1003 - 8493. 2019. 07. 004