浅谈地铁动力变压器安全检修设计方案

Discussion on Safety Inspection & Maintenance Design Scheme for Metro Power Transformer

本文总结了目前地铁变电所动力变压器和中压馈线开关柜设置在不同地点而采取的检修和维护、安全防护设计方案,论述了隔离开关柜、负荷开关柜和电磁锁3种设计方案的接线形式、操作程序和电气联锁关系,并在此基础上从技术、投资和工程实践3个方面作了进一步的分析。

This article summarizes safety protective design schemes for inspecting and maintaining power transformer and medium voltage feeder switchgear which are installed in various place in metro＇s substation today. It also discusses the connection mode, operating rules and electrical interlock relationships for three design schemes including disconnecting switchgear, load switchgear and electromagnetic lock. In addition, this essay makes a further analysis in the respect of technology, investment and engineering practice.