考虑多级压缩机耦合特性的压缩空气储能系统功率跟踪控制OA

The new-type power system imposes higher demands on the flexibility of compressed air energy storage regulation.However,traditional PID decoupling control struggles to achieve high-precision power command tracking for the energy storage side within safety operation constraints due to the complex coupling relationships between multi-stage compressors.To address this issue,this paper proposes a model predictive power tracking control strategy that takes into account the coupling characteristics between multi-stage compressors.Initially,a refined state-space dynamic model for the energy storage side,reflecting the coupling relationships between the state and control variables of each compressor,is constructed.Subsequently,the model is transformed into a simplified power prediction model,with the objective function being the minimization of power tracking error.A model predictive power tracking control strategy considering safety operation constraints is developed.Finally,a system dynamic simulation model is established using MATLAB/Simulink to investigate the open-loop characteristics and control variable coupling relationships.The proposed control strategy is compared with the PID decoupling control in terms of secondary frequency regulation performance under safe operation constraints.Results show that the control strategy proposed in this paper can significantly improve the power tracking accuracy.