CAJ | 학술논문

针对超临界机组协调控制系统具有强耦合以及存在大量不可测扰动等特点，提出一种基于解耦和扰动观测器的动态矩阵控制方案。首先对被控对象进行动态解耦，降低各通道间的耦合作用；然后对广义被控对象各主对角线通道分别进行扰动观测器设计，用于估计扰动的大小，并对多变量动态矩阵控制输出进行补偿。以基于 Modelica 语言建立的600 MW 超临界机组协调控制系统作为研究对象，仿真结果表明，该控制方案具有良好的抗扰性能，克服了常规 DOBDMC抑制扰动时 DOB 产生的过度补偿作用，有效抑制了由变量耦合及不可测扰动的影响，从而提高了系统抑制扰动的能力。
침대초림계궤조협조공제계통구유강우합이급존재대량불가측우동등특점，제출일충기우해우화우동관측기적동태구진공제방안。수선대피공대상진행동태해우，강저각통도간적우합작용；연후대엄의피공대상각주대각선통도분별진행우동관측기설계，용우고계우동적대소，병대다변량동태구진공제수출진행보상。이기우 Modelica 어언건립적600 MW 초림계궤조협조공제계통작위연구대상，방진결과표명，해공제방안구유량호적항우성능，극복료상규 DOBDMC억제우동시 DOB 산생적과도보상작용，유효억제료유변량우합급불가측우동적영향，종이제고료계통억제우동적능력。
A decoupling and disturbance observer (DOB)based dynamic matrix control (DMC) scheme is proposed to handle the strong coupling effects and immeasurable disturbances of the boiler-turbine coordinated system in the supercritical power plant.In order to eliminate the coupling effects,dynamic decoupling is first carried out in the controlled plant.Then DOBs are designed for each main diagonal channel of the generalized object to estimate the disturbances and compensate for the DMC output.The model of a 600 MW supercritical unit based on Modelica is established as the research object.The simulation results demonstrate that the proposed scheme has good disturbance re-sistance ability,which can overcome the effects of the excessive compensation generated by DOB in the conventional DOBDMC method,and restrain the issues of coupling effects and immeasurable dis-turbances.Therefore,the ability of restraining disturbance of the system is improved.