Abstract
Participation of open communication network may cause time delays in micro-grid load frequency control(LFC) system. This paper examines the stability problem of micro-grid LFC system with two additive time delays and load disturbance. A novel Lyapunov–Krasovskii functional(LKF) is proposed with the consideration of more augmented terms. With the help of the proposed LKF, a new stability condition is developed by using the auxiliary function-based integral inequality. The relationship is built among the admitted maximum values of two delays, the controller parameters and the bounds of the nonlinear load disturbances. The main results can guide the determination of time delay requirements for micro-grid LFC system with communication network. Finally, the validity of the presented approach is illustrated by simulation case studies based on Matlab.
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