广州地铁嘉禾车辆段低压配电及照明设计研究与探讨

Research and discussion on the architectural design of third metro lines in Xi’an City

广州地铁嘉禾车辆段是目前国内规模最大的车辆段,本文在该工程的低压配电设计及照明设计中研究了以下问题:车辆段低压配电方案的比较及确定;大型库区照明配电方案的比较及确定;应急照明电源供电方式的选择;库区检查坑内人身安全的防护;高土壤电阻率条件下接地网方案设计;室外电缆沟排水泵供电方案设计。该设计完善了以往地铁系统存在的低压配电及照明设计方案的不足,根据工程的实际特点对多个重点性技术问题进行经济性和可靠性对比,旨在提高广州地铁嘉禾车辆段低压配电及照明可靠性,降低工程投资和维护难度,同时对同类城市轨道交通中大型车辆段的低压配电及照明设计提出探讨性意见。

The dimension of Jia-He metro vehicle depot is the largest one among the domestic depots currently,this paper studies the following questions in the aspects of low-voltage power distribution system design and lighting design:the comparing and confirming of the low-voltage distribution scheme in the metro depot,and the lighting system scheme in the large reservoir,selecting of emergency-lighting power supply mode,protecting of the personal safety in the reservoir,designing of the pipe canal scheme and the power supply to the drainage pump in the metro depot.This design improves the insufficient facts existing in the past voltage distribution and lighting system,compares the economy and reliability of several key technical issues based on the actual feature of the project,in order to improve the reliability of the voltage distribution system,and reduce the investment of the project and maintenance difficulty,meanwhile,proposes the opinion to discuss in fact of low power distribution system design in the large metro depot as the same style rail transit.