火电厂后备柴油发电机监控系统设计与实现  

Supervisory control system of backup diesel generator in thermal power plant

作　　者：孙军[1] 朱小平[1] 方彦军[1] 

机构地区：[1]武汉大学自动化系,湖北武汉430072

出　　处：《电力自动化设备》2009年第1期131-134,共4页Electric Power Automation Equipment

摘　　要：为柴油发电机组设计了一套高性能的控制系统代替原有的机械触点式继电器控制系统。监控系统的硬件系统主要采用S7-300型号的可编程逻辑控制器(PLC)。着重介绍了系统自启动逻辑和380 V线路保护逻辑。选用西门子STEP7V5.3软件包,采用功能块结构化编程方法编译PLC的监控程序。调试和试运行结果表明,系统明显提高了应急柴油发电机组自启动成功率、可靠性和响应速度。An enhanced control system is designed to replace the original mechanical relay-type control system for the backup diesel generator of a thermal power plant. Its hardware system applies Siemens S7-300 series PLCs. The automatic system startup logic and 380V line protection logic are emphasized. The supervisory functions are programmed by structural design with Siemens STEP7 V5.3 software packet. Test and operation show that the success rate of automatic system startup, the system reliability and the response speed are greatly improved.

关 键 词：柴油发电机组 可编程逻辑控制器 S7—300 

分 类 号：TM621.7[电气工程—电力系统及自动化] TP273[自动化与计算机技术—检测技术与自动化装置]