火电厂电气监控系统接入DCS方式的分析

分析了火电厂电气监控系统（ECS）接入集散控制系统（DCS）的3种模式：硬接线、硬接线+通信、全通信，探讨了不同模式的优缺点和应用中存在的问题，认为硬接线+通信方式是目前火电厂ECS接入DCS的主流解决方案，大大提高了ECS的自动化水平，但目前在应用中还存在ECS与DCS的通信受限、ECS的电气维护和管理功能不十分完善等问题，通过技术的改进、参与各方的密切配合，相信这些问题会很好地得到解决，随着通信技术的日趋成熟和稳定，完全取消硬接线的全通信方式也一定会逐步得到推广。

Analysis on Connecting Mode of Electric Control System into Distributed Control System in Thermal Power Plant

The three modes of the electric control system (ECS) connecting into the distributed control system (DCS) in thermal power plant are analyzed, i.e. control cables, control cables and communication, full communication. The merits and shortcomings of the three modes and the problems in actual application are discussed. The mode of control cables and communication is considered to be a mainstream solution for connecting ECS into DCS with the capability of greatly improving the automation level of ECS. However, such problems are still existed in the application as limited communication between ECS and DCS, that the functions of maintenance and management are not perfect etc. It is believed that these problems can be solved gradually by the maturity and stability of communication technology and the mode of full communication without control cables will be broadened gradually.