基于PLC的双电源自动切换改造
A Case Retrofit of PLC-based Dual-source Automatic Switch
陈志成1
作者信息
- 1. 广州地铁集团有限公司,广东 广州 510000
- 折叠
摘要
双电源自动切换主要应用于保障一、二类负荷的正常供电,大多数通过PLC实现,具休是当其中一路电源发生停电时,可将该电源下的负载自动切换到另一路电源,从而保障一、二类负荷连续、可靠运行.在电源切换过程中,一旦出现失误,就可能导致一、二类负荷断电或者电源间短路.以广州地铁三号线体育西路冷站低压配电双电源自动切换系统为例,对双电源自动切换技术改造进行研究.
Abstract
Dual-source automatic switch is mainly used to ensure normal power supply of Class Ⅰ and Class Ⅱ loads,and is mostly achieved through PLC.When one of the sources encounters an outage,supply for the load formerly rely on that source can be automatically switched to another source,thus ensuring continuous and reliable operation of Class Ⅰ and Ⅱ loads.However the malfunction of this switch can also lead to power loss to the loads or form an inter-source short circuit fault.This paper reports a case of technical retrofit performed on the dual-source automatic switch system for the low-voltage distribution in an actual metro project in Guangzhou.
关键词
PLC/双电源自动切换/轨道交通/技术改造Key words
PLC/dual-source automatic switch/rail transit/technical retrofit引用本文复制引用
出版年
2024
NETL
NSTL
万方数据