热力发电Issue(9)：25-32,38,9.DOI:10.3969/j.issn.1002-3364.2014.09.025
基于仿射非线性系统的超临界机组中间点温度控制的仿真研究
Affine nonlinear system based simulation on control strategy of intermediate point temperature for supercritical units
摘要
Abstract
Due to the severe nonlinearity and complex mechanism of the temperature at intermediate point of the supercritical units,its accurate control is difficult to achieve.Thus,the method based on affine nonlinear system and feedback linearization was adopted to control the intermediate point temperature.By analyzing mechanism equations of the steam-separator and evaporation zone,the affine nonlinear system model for the intermediate point temperature was established.Moreover,taking a 600 MW supercritical unit the object, the system stability analysis and simulation test were carried out,to verify the anti-disturbance capability of the system under water disturbance and the control effect of the system with unit load ranging from 40%to 100%.Furthermore,comparison of the control effect between the affine nonlinear system and the con-ventional PID system was performed.The results show more effective performances.关键词
超临界机组/中间点温度/控制/仿射非线性系统/反馈线性化Key words
supercritical unit/intermediate point temperature/control/affine nonlinear system/feedback lin-earization分类
信息技术与安全科学引用本文复制引用
刘常坤,周洪,刘智伟,胡文山..基于仿射非线性系统的超临界机组中间点温度控制的仿真研究[J].热力发电,2014,(9):25-32,38,9.基金项目
国家自然科学基金项目(61374064,61304152) （61374064,61304152）
