熊 江（中南建筑设计院股份有限公司，武汉市 430071）

杜毅威（中国建筑西南设计研究院有限公司，成都市 610042）

Discussion on Dual Power Supply of Power Grid as Primary

Load Fire-Fighting Power Supply

XIONG Jiang（Central South Architectural Design Institute Co.，Ltd.，Wuhan 430071，China）

DU Yiwei（China Southwest Architectural Design and Research Institute

Corp. Ltd，Chengdu 610042，China）

    Abstract：The necessary conditions for the dual supply power of power grid as the primary load fire-fighting power supply are discussed，several problems that are easily ignored in the actual projects of using the dual power supply of medium-voltage power grid as the primary load fire-fighting power supply are introduced，the causes of these problems are analyzed，and solutions and suggestions are proposed.

    Key words：fire-fighting power supply；duplicate supply；circuit isolation；physical isolation；high pressure water mist；self-provided power supply；stand-by power supply；input time

  摘 要：讨论电网双重电源作为一级负荷消防电源的必要条件，介绍实际工程中中压电网双重电源作为一级负荷消防电源容易忽视的几个问题，分析这几个问题产生的原因，并提出解决方案和建议。

  关键词：消防电源；双重电源；电路隔离；物理隔离；高压细水雾；自备电源；备用电源；投入时间

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

      doi：10. 3969 / j. issn. 1003 - 8493. 2019. 09. 001