CAJ | 학술논문

由于超临界机组中间点温度具有高非线性、机理复杂等特点，难以对其进行控制。对此，采用仿射非线性系统和反馈线性化控制中间点温度，即通过分析汽水分离器和蒸发区的机理方程建立中间点温度仿射非线性系统模型，以超临界600 MW机组为研究对象，对所建模型进行稳定性分析和仿真试验，以验证在给水扰动下系统的抗扰动能力以及在40％~100％负荷范围内各负荷段的中间点温度控制效果，将基于仿射非线性系统的中间点温度控制系统与PID中间点温度控制系统进行对比，结果表明仿射非线性控制系统控制方法具有更优的控制效果。
유우초림계궤조중간점온도구유고비선성、궤리복잡등특점，난이대기진행공제。대차，채용방사비선성계통화반궤선성화공제중간점온도，즉통과분석기수분리기화증발구적궤리방정건립중간점온도방사비선성계통모형，이초림계600 MW궤조위연구대상，대소건모형진행은정성분석화방진시험，이험증재급수우동하계통적항우동능력이급재40％~100％부하범위내각부하단적중간점온도공제효과，장기우방사비선성계통적중간점온도공제계통여PID중간점온도공제계통진행대비，결과표명방사비선성공제계통공제방법구유경우적공제효과。
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.