铁路隧道照明配电设计优化

Optimizationof Lighting Design for Railway Distribution Tunnel

针对铁路隧道照明既有供电模式和负荷分布特点,从电压损失、单相接地故障保护等方面校验几种供电模式是否满足现有规范要求,从而提出优化措施,建议在长大隧道照明设计时,合理选择断路器额定电流、脱扣特性、出线电缆截面积。

In view of existing power supply modes and load distribution characteristics of railway tunnel lighting,it is checked to determine whether several power supply modes can meet the requirements of existing specifications from the aspects of voltage loss,single-phase earth fault protection,etc.,so as to put.forward the optimization measures.It is recommended that the rated current of circuit breaker,tripping characteristics and cross-sectional area of outgoing cable should be reasonably selected during the lighting design of long distance large tunnels.