基于MCP-CSH的超临界机组再热蒸汽温度控制  

MCP-CSH control of reheat steam temperature for supercritical power units

作　　者：吴思润 杨平[1] 

机构地区：[1]上海电力学院自动化工程学院,上海200090

出　　处：《热力发电》2015年第3期63-68,共6页Thermal Power Generation

摘　　要：针对超临界机组再热蒸汽温度采用传统PID控制难以达到较好控制品质的问题,将基于多容惯性标准传递函数方法设计的串联校正状态反馈协调型(MCP-CSH)控制器用于再热蒸汽温度控制。仿真结果为:设定值扰动时,控制系统响应无超调且调整时间短;燃料扰动时,控制系统响应的最大动态偏差仅为传统PID控制的50%;鲁棒性试验时,在过程惯性时间上浮32%或过程增益下降80%情况下控制系统仍然保持良好的控制品质。对比表明,新型控制器的再热蒸汽温度控制品质显著优于传统PID控制器。The conventional PID controller cannot obtain good control effects in reheat steam temperature for supercritical power units. Thus,designed by multiple capacity process（ MCP） standard transfer function,the cascade compensation and state-variable feedback Harmony（ CSH） controller was adopted to control the reheat steam temperature. The simulation experiments show that,during the setting value disturbance test,response of the new control system has no overshoot and the regulation time is short. During the fuel disturbance test,the maximum dynamic deviation of the new control system＇s response is only 50% of that of the conventional PID control system. During the robustness test,the new control system con still keep great control quality when the process inertia time increases by32% or the process gain decreases by 80%. Therefore,the new control system has a better control quality on reheat steam temperature than the conventional PID control system.

关 键 词：再热蒸汽温度 多容惯性 标准传递函数 串联校正 状态反馈 

分 类 号：TP273.1[自动化与计算机技术—检测技术与自动化装置] TK323[自动化与计算机技术—控制科学与工程]