The Discrete Load Frequency Control System Using a Robust Periodic Output Feedback Controller

<div>Frequency deviation in area-1 Δ<i>F</i><sub>1</sub> (p.u.) with respect to time (sec) for without having any PSS and with the discrete lead-lag-based PSS.</div>

Journal of Electrical and Computer Engineering

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Figure 5

Figure 5: The Discrete Load Frequency Control System Using a Robust Periodic Output Feedback Controller 