超临界火电机组特点及控制方式分析

为保证超临界直流锅炉机组长期安全、稳定、经济运行，通过对比超临界直流锅炉和汽包锅炉，总结了超临界直流锅炉的设计、性能及其在运行控制上的特点，结合其生产过程所呈现的多变量、大惯性、非线性、分布参数和时变、系统间耦合性较强的动态特性，选择主控方式、控制好给水量、中间点焓值、煤水比以及补偿、解耦等几个主要技术问题，重点分析了锅炉给水控制、煤水比控制，提出了超临界锅炉的控制策略。

Features and Control Mode Analysis of Supercritical Thermal Power Unit

To guarantee long-term safe,stable and economic operation of supercritical once-through boiler,by comparing supercritical once-through boiler and steam drum boiler,its design,quality and features in operation control were summarized.In combination with multi variable,high inertial,non-linear,distributed parameter,time-variation and stronger inter-system coupling features in dynamic productive process,and some main technical problems like selection of master cylinder lever mode,water supply control,enthalpy,...