A secondary voltage control method for the microgrid  considering stochastic communication delay

Abstract

Abstract: 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 Lyapunov stability theory and Schur’s complement principle, the sufficient conditions of asymptotic convergence 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 microgrid system and meets the stability and reliability requirements of the closed-loop system. Finally, the performance of the microgrid system is verified by simulation, which proves the feasibility and correctness of the theorem.

Key words: islanded microgrid, state observer, secondary voltage, stochastic time delay

CLC Number:

TP273

FENG Yi-wei, MA Jing. A secondary voltage control method for the microgrid considering stochastic communication delay[J]. Journal of Lanzhou University of Technology, 2024, 50(3): 69-76.

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A secondary voltage control method for the microgrid considering stochastic communication delay

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