CHEN Baoyi1, ZHANG Changqing2, JING Xiaoguo2, et al. INTERNAL MODEL THEORY BASED MAIN STEAM TEMPERATURE GUIDANCE DIFFERENCIAL CONTROL SYSTEM[J]. Thermal power generation, 2012, 41(10): 25-27.
CHEN Baoyi1, ZHANG Changqing2, JING Xiaoguo2, et al. INTERNAL MODEL THEORY BASED MAIN STEAM TEMPERATURE GUIDANCE DIFFERENCIAL CONTROL SYSTEM[J]. Thermal power generation, 2012, 41(10): 25-27.DOI:
基于内模控制原理的导前微分主蒸汽温度控制系统
摘要
根据锅炉蒸汽温度的动态特性及其控制方式的特点
将1种导前微分控制系统按内模原理的方法进行设计和调整
并对其稳定性进行了分析。在某300MW机组上进行的控制效果验证表明
机组负荷在276~214 MW之间变化时
主蒸汽压力偏差小于±0.3MPa;在机组负荷变化量较小时
主蒸汽温度变化幅度为2~-2℃;在机组负荷变化幅度较大时
主蒸汽温度变化幅度为3~-4℃。
Abstract
Considering the dynamic characteristics and the control mode of the boiler steam temperature
an internal model theory based guidance differencial main steam temperature control system was designed and adjusted
and its stability was analyzed.The control effect verification on a 300 MW unit indicates that
the deviation of the main steam pressure is within-0.3~0.3 MPa when the unit load varies from 276 W to 214 W.The main steam temperature variation ranges from-2 ℃ to 2 ℃ at small unit load variation and from-4 ℃ to 3 ℃ at larger load variation.