【作者】 梁庚； 白焰；

【Author】 Liang Geng Bai Yan (Automation Department,North China Electric Power University,Beijing 102206,China)

【机构】 华北电力大学自动化系；

【摘要】 采用国际最先进的现场总线技术为国内一家采用链条炉生产的大型供热企业实施位于现场级的、全面的、彻底分散的自动化方案。此技术以充分体现出现场总线技术在现场级的优势为系统设计的主要原则,基于 FF 现场总线的链条锅炉控制系统设计的主要内容包括对系统关键参数的控制方案等。实现了对锅炉水位和燃烧子系统的控制。采用梯度法实现了最佳风煤比的寻优控制,构建了基于现场总线网络和以太网络的整体控制体系,全面实现了电气和仪表控制的自动化、数字化、网络化和信息化。工程项目运行实践表明,该系统取得了优越的控制性能和经济性能指标,取得了显著的经济效益。更多还原

【Abstract】 Full and thorough distributed automation scheme sited in fields is implemented for a large enter- prise of heat-providing by grate chain boilers with the most advanced fieldbus technology.The main con- tent for the design of the system includes the control scheme for the key parameters of the system etc..The control of water level and combustion sub-system are realized.Gradient method is adopted in the searching for the optimum value of air-fuel rate.The whole control architecture is constructed based on fieldbus net- work and Ethernet networks.The operation practice of the engineering project showed good control and e- c0nomic performance index are achieved and also significant economic benefit.更多还原