双机并列汽机危急保护系统  

Steam Turbine Protection System of Two Parallel Control Stations

作　　者：杜洪亮[1] 宗学军[1] 陈斌[1] 杨忠君[1] 钟伦[2] 

机构地区：[1]沈阳化工学院信息工程学院,辽宁沈阳110142 [2]西门子(中国)有限公司沈阳办事处,辽宁沈阳110014

出　　处：《控制工程》2007年第2期227-229,共3页Control Engineering of China

摘　　要：针对传统汽机危急保护系统(ETS)经常发生误跳拒跳事故等问题,采用双机并列形式的控制站,即采用CPU、电源及I/O模块双套并列,同时处于工作状态的结构,以实现保护控制逻辑的高可靠性。该系统除兼具传统ETS的功能外,新增了在线试验和事故记录等功能,提高了汽机危急保护系统的实用性;且网络通讯灵活,可方便实现与其他网络连接,实现数据共享。To the problem that steam turbine protection system(ETS)is often failure in the safe operation,a design scheme using two parallel control stations is proposed.It comprises two sets of CPU,power station and I/O module.Both of two sets work in the same time,in order to realize the high reliability of the protecting control logic.It has not only the traditional functions,but also the function of on-line trial and fault logging.The availability of the system is improved and the flexibility of the network interface is increased,which makes the connection network simple,realized data sharing.

关 键 词：汽机危急保护系统(ETS) 双机并列 在线试验 事件记录 时钟同步 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]