铁路隧道照明配电设计优化

丁晓宁（广东省铁路规划设计研究院有限公司，广州市 510600）

Optimization of Lighting Distribution Design for Railway Tunnel

DING Xiaoning(Guangdong Province Railway Planning and Design Institute

Co.,Ltd.,Guangzhou 510600，China)

Abstract：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.

Key words：railway tunnel;lighting distribution;design optimization;power supply mode;voltage loss;earth‑fault protection;tripping characteristic;cross‑sectional area of cable

摘　要：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。

关键词：铁路隧道；照明配电；设计优化；供电模式；电压损失；接地故障保护；脱扣特性；电缆截面积

中图分类号：U25            文献标识码：A

doi：10.3969 / j. issn.1003 － 8493.2023.02.007