南昌地铁2号线三级负荷总开关消防切非后自复失效原因分析及对策  

Cause Analysis and Countermeasures of Auto-Recovering Function Failure of the Third Grade Load Main Breaker After Fire-Cutting in Nanchang Metro Line 2

作　　者：刘良峰 LIU Liang-feng(Guangzhou Metro Design&Research Institute Co.Ltd.,Guangzhou 510010,China)

机构地区：[1]广州地铁设计研究院股份有限公司

出　　处：《工程建设与设计》2020年第3期79-81,85,共4页Construction & Design for Engineering

摘　　要：南昌地铁2号线低压配电系统设置了三级负荷总开关和自投自复逻辑,其中,三级负荷总开关具有失电自切和来电自复功能,该自复功能在三级负荷总开关消防切非后失效。论文通过介绍变电所低压配电系统方案、自投自复逻辑以及消防切非原理,分析了三级负荷总开关在消防切非后自复功能失效的原因,并提出了解决措施和优化方案。The power supply and distribution system of Nanchang metro line 2 is equipped with the third grade load main breaker and automatic switching and recovery logic.The third grade load main breaker has auto-cutting function for losing power and auto-recovering function for regaining power.The auto-recovering function of the third grade load main breaker would be failed after fire-cutting.This paper introduces the power supply and distribution system,automatic switching and recovery logic and fire-cutting principle in power supply and distribution system,then analyzes the reasons for the failure of the auto-recovery function of the third grade load main breaker after fire-cutting,and finally proposes solutions for the failure and optimization schemes.

关 键 词：地铁 三级负荷总开关 自投自复 消防切非 

分 类 号：U298.59[交通运输工程—交通运输规划与管理]