莫理莉 俞   洋（华南理工大学建筑设计研究院有限公司，广州市 510640）

Research on Low -voltage DC Distribution System of Smart and Green Buildings*

MO Lili YU Yang（Architectural Design & Research Institute of SCUT，Guangzhou 510640，China）

    Abstract：On account of the absence of guiding design and technical specifications for the low-voltage DC distribution system of civil architecture, especially the smart and green buildings，and the lack of distribution design solution for reference，the distribution system design of a scientific research building is taken as example in sharing the theoretical foundation and practical experience in the design and construction of low-voltage DC distribution system：firstly，the load characteristics are analyzed to form the framework of distribution network；secondly，the switch selection and protection scheme for DC distribution system under the aforesaid framework are studied; and at last，the differences of cables respectively adopted in DC distribution system and AC system are analyzed.

    Key words：low-voltage DC distribution；smart and green building；load characteristics；distribution network framework；solar power generation；distribution system protection；cable selection；BIPV

  摘 要：针对民用建筑尤其是绿色智慧楼宇中低压直流配电系统方案缺乏指导性设计规范和技术规程，缺乏可供参考的配电设计解决方案的现状，以某科研楼配电系统设计为例，分享该项目低压直流配电系统的实际设计与建设的理论支撑和实践经验：首先，分析负荷特点，提出直流配电系统的配电网络架构；其次，研究在该网络架构下直流配电系统开关的选择和保护方案；最后，分析直流配电系统线缆的选择与交流系统的不同。

  关键词：低压直流配电；智慧绿色楼宇；负荷特点；配电网络架构；太阳能发电；配电系统保护；线缆选择；BIPV

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

      doi：10. 3969 / j. issn. 1003 - 8493. 2019. 07. 003