摘要
随着武汉城市建设的不断发展,地下电力电缆线路与已建或在建的轨道交通线路存在平行、相对距离小或交叉等情况不断增多。针对电力电缆线路在运行或发生故障时可能对邻近地铁通信线路产生的干扰或影响,本文分析了地下电力电缆对地铁信号电缆影响的计算公式、电缆的临界电流和临界距离,验证了武汉典型地下电缆对轨道交通信号的影响,结果表明目前武汉轨道交通信号电缆与地下电力电缆的布置情况均不会对轨道交通信号电缆带来干扰或危险。
With the continuous development of urban construction in Wuhan City, parallel lines,small distance lines and crossing lines of underground power cable and existent or under construction rail transit are increasing. In view of the interference or influence on nearby metro communication caused by the power cable line in operation or failure, the calculation formula of the influence,the critical current and the critical distance of the cable are derived. The research results showthat the current layout of Wuhan rail transit signal cable and underground power cable will notbring interference or danger to the rail transit signal cable.
出处
《湖北电力》
2016年第1期47-52,共6页
Hubei Electric Power
关键词
地下电缆
地铁
信号电缆
单相对地短路
underground power cables
metro
signal cable
single-phase grounding fault
