基于西门子S7-400有容错功能的发电厂计算机监控系统

Siemens S7-400-based Fault Tolerant Computer Monitoring and Control System for Power Plants

分析了发电厂计算机监控系统各个环节冗余的重要性,有冗余的环节,一个支路出了问题, 系统仍能正常工作;没有冗余或全部冗余支路都损坏,将造成系统瘫痪。介绍了具有容错功能的西门子S7-400可编程逻辑控制器(PLC)构成的现地控制单元(LCU)的发电厂计算机监控系统。

The importance of redundant nodes of a computer monitoring and control system for power plants is analyzed. Even if one spur track at redundant nodes is in trouble, the system can still work, But if there is no redundant node or all redundant nodes are in trouble, the system will collapse. A fault tolerant computer monitoring and control system for power plants based on Siemens S7-400 PLC is introduced.