PLC程控与DCS控制在输煤系统中的应用和比较  

Comparison and Application of Programmable Logic Controller and Distributed Control System in Coal Handling System

作　　者：曹群佼[1] 张慧新[1] 

机构地区：[1]中南电力设计院,湖北武汉430071

出　　处：《华中电力》2011年第2期63-66,共4页Central China Electric Power

摘　　要：在现有的发电厂中,输煤系统绝大部分采用PLC程控系统,采用DCS控制系统的很少。结合输煤系统的特点,通过对DCS控制系统和PLC控制系统在技术上、经济上的比较,以便更好地服务工程投标和项目实施。随着全厂辅助系统采用统一控制平台的要求,通过比较我们可以看出逐渐将输煤控制系统纳入DCS控制范围将是今后的发展趋势。PLC was used much more than DCS in coal handling system in existing power plants. In this paper, DCS and PLC were compared over technology and economy to better serve the construction bidding and project implementation. Seen from the comparison results and the requirements of unified hardware platform, taking DCS in coal handling system is the trend.

关 键 词：DCS PLC 技术比较 经济比较 输煤系统 

分 类 号：TM621.7[电气工程—电力系统及自动化]