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传统的电厂备用保安电源柴油机组监控系统由机械触点继电器组成,存在接线多、不易维护、可靠性低和信息封闭等缺点。提出了基于PROFIBUS—DP总线的保安电源全局自动监控系统设计方案。基于西门子S7—300PLC和TP270触摸屏,设计了可就地操作的柴油机组现场监控系统,并通过CP342—5接口模块和CP5611接口卡,实现了各个柴油机组监控系统的网络化及其与上位机监控PC的连接。
Traditional power plant backup security power supply diesel engine monitoring system consists of mechanical contact relay, there are many wiring, easy maintenance, low reliability and information closed shortcomings. Proposed based on PROFIBUS-DP bus security global automatic monitoring system design. Based on SIEMENS S7-300PLC and TP270 touch screen, a diesel locomotive field monitoring system designed on the spot was designed. The CP342-5 interface module and CP5611 interface card were used to realize the networking of each diesel engine monitoring system and its relationship with the host computer monitoring PC connection.