Aiming at the deficiency of traditional PID control for the pumped storage units with mechanical delay,a dynamic ma-trix PID cascade control for pumped storage units is proposed.First,considering the mechanical delay of the hydraulic actuator and output limiting as well as speed limiting of the main servomotor,a mathematical model of the regulation system of the pumped storage unit under small fluctuation is established.Second,based on taking the original PID control of the regulating system as the inner loop control,a dynamic matrix control is introduced as the outer loop control.Then,the PID parameters are optimized by the Beetle An-tennae Search Algorithm,and a new dynamic matrix PID cascade control method of pumped storage unit is proposed.Finally,six con-trol strategies such as PID are used to simulate the control system.The results show that the proposed control method can effectively improve the control performance of the pumped storage unit regulation system under no-load frequency disturbance with different mechanical time delays.This study provides a reference for the control of the regulation system of pumped storage units.
关键词
机组调节系统/机械时滞/动态矩阵PID串级控制/天牛须搜索算法/空载工况/抽水蓄能电站
Key words
unit regulation system/mechanical delay/dynamic matrix PID cascade control/beetle antennae search algorithm/no-load condition/pumped storage power station
维普
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