摘要
本文从直流供电系统的构成、直流馈线保护设置情况出发,介绍了目前使用的直流馈线电缆的种类及适用环境,分析了铠装直流电缆在特殊使用环境下绝缘损坏的可能性、绝缘故障时已有保护的动作情况及可能造成的损失,简要阐述了直流电缆绝缘监察保护的动作原理,论述了其在地铁和快速轨道交通系统中的应用范围及必要性。
Start with DC supply system constitution, and the situation of DC feeding protection setting, introduces the types and application environment of DC feeding cable used at present time, analyzes the probability of damaging the insulation of DC armored feeding cable in special environment, what protective actions being taken in case of occurrence of insulation fault and its probable losses, briefly illustrates the insulation supervision and protective acting principle of DC cable, and its application scope and necessity in subway and urban mass transit system.
出处
《电气化铁道》
2004年第4期30-32,共3页
Electric Railway
关键词
城轨交通
铠装直流电缆
电缆绝缘监察保护
应用范围
必要性分析
urban mass transit
DC armored cable
cable supervision and protection
scope of application
necessity analysis
