摘要
对某地铁车站发生的低压变电所故障进行分析,得出故障原因是:小容量PLC在执行通信操作时出现内存读写冲突。得出结论:将备自投操作与通信管理操作分开采用两套PLC来执行,可避免再发生类似故障。
The fault in the LV distribution substation of a subway station is analyzed and the cause is derived that the memory read/write conflict occur when communication and power switching control is managed by one low capacity PLC. It concludes that two PLC shall be used in the system, one for the power switching control and one for conununication so that the similar failures can be avoided.
出处
《智能建筑电气技术》
2011年第2期69-73,共5页
Electrical Technology of Intelligent Buildings
关键词
低压配电系统
备自投
通信管理机
下行通信和
上行通信
内存读写操作和冲突
LV distribution system, spare power automatic switching, communication management unit, downlink communication, uplink communication, memory read/write operation and conflict
