Abstract
Time-delay is an important issue of interconnected power system (IPS). Load frequency control (LFC) of a wind-integrated IPS with time-delay is more complicated as power output of wind turbine generator (WTG) is time varying. This paper proposes a state feedback controller based on $H_{\infty}$ performance for time-delay IPS with wind power integration. A new stabilization criterion based on Lyapunov-Krasovskii (LK) functional approach is derived in linear matrix inequality (LMI) framework. An optimization problem is defined by using the stabilization criterion as a constraint. Suitable $H_{\infty}$ performance index and stabilizing gains of controller are obtained after solving this optimization problem. Finally, the usefulness of the proposed controller is verified by considering a suitable example of two-area wind-integrated IPS with time-delay.
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