A distributed cooperative consensus algorithm is presented for the secondary voltage recovery problem of the islanded microgrid with stochastic communication delay.Firstly,the islanded microgrid model is established,and the secondary voltage recovery mechanism of microgrid system with stochastic communication time delay is qualitatively analyzed.The distributed observer is introduced to estimate the system states,and a distributed consensus cooperative control strategy is proposed.Then,based on Lya-punov stability theory and Schur's complement principle,the sufficient conditions of asymptotic conver-gence for the stochastic communication time-varying delay system with zero and non-zero external inputs are obtained.The proposed control method improves the anti-disturbance capability of the islanded micro-grid system and meets the stability and reliability requirements of the closed-loop system.Finally,the per-formance of the microgrid system is verified by simulation,which proves the feasibility and correctness of the theorem.
关键词
孤岛微网/状态观测器/二次电压/随机时延
Key words
islanded microgrid/state observer/secondary voltage/stochastic time delay
维普
万方数据