一次网络环网故障导致辅网PLC瘫痪的原因分析和处理

Because of the Network Ring Net Cause all Auxiliary Network PLC Paralyzed Cause Analysis and Processing Scheme

随着大型发电机组配置人员越来越少,新厂将化学、除灰、脱硫、燃料等外围PLC系统采用辅网系统设计的越来越多,外围控制系统辅网的网络安全越来越重要,针对由于网络设计存在环网,在消缺过程中形成网络风暴,导致辅网所有PLC瘫痪,控制系统大面积失灵的故障现象进行原因分析,并制定后续处理方案,以达到真正网络安全,控制系统可靠的目的。原因分析和后续处理方案针对性强,为辅网系统的出现多个CPU停止,PLC系统瘫痪提供了参考和很好的借鉴。

With large generating set conliguration personnel becoming less and less, the new factory useschemistry, ash, desulfurization, fuel and peripheral PLC system USES auxiliary network system design more and more.Peripheral control system auxiliary of network security is more and more important.Due to ring network and network storm, auxiliary network will paralysis, which leads to all PLC control system failure phenomenon,Based onlarge fault reason analysis, and follow-up treatment scheme, we achieve the real network secure and reliable.