Abstract: This article retrospects the development of sequence control system in thermal power plants at home and abroad，especially introduces the three developmental stages of sequence control system in China over the past 35 years，i.e.：1.starting stage；
Abstract: This article retrospects the development of sequence control system in thermal power plants at home and abroad，especially introduces the three developmental stages of sequence control system in China over the past 35 years，i.e.：1.starting stage；
文摘:回顾国内、外火电厂顺序控制系统的发展，特别介绍35a来我国顺序控制系统经历的起步阶段、以程序控制器(PLC)为核心硬件的中期阶段和主、辅机顺序控制系统融入分散控制系统(DCS)阶段、现场总线控制系统(FCS)介入阶段，并对由不同形式组成的顺序控制系统的特点进行评价，展望下一世纪该系统的发展趋势。