During the operation of supercritical CO2 compressor,the working state of adjustable guide vane changed frequently with the compressor speed and other state variables,which will cause the com-pressor to surge,and in serious cases the compressor equipment will be damaged.To solve this problem,this paper adopted an anti-surge auto disturbance rejection control(ADRC)method based on genetic al-gorithm.This method set up an anti-surge valve at the outlet of the compressor to control surge,and used a genetic algorithm to tune the auto-disturbance rejection controller,so that the opening of the anti-surge valve changed accordingly with changes in state variables such as speed.The opening of the anti-surge valve changed the outlet pressure,allowing the compressor to operate at the equilibrium point.The simu-lation results show that the auto disturbance rejection controller optimized by genetic algorithm has better anti surge control effect,with a shortened adjustment time of 20％to 33％and a reduced overshoot of 30％to 45％,making the control process smoother and able to stabilize the speed while suppressing dis-turbances.
关键词
超临界CO2压缩机/喘振/遗传算法/自抗扰控制
Key words
supercritical CO2 compressor/surge/genetic algorithm/auto disturbance rejection control(ADRC)
万方数据