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。 Analysis of a substation substation failure occurred at a subway station, resulting in failure reason is: small capacity PLC in the implementation of communication operation memory read and write conflicts. Concluded: the preparation of self-vote operation and communication management operations separately using two sets of PLC to perform, to avoid the recurrence of similar failures.