Abstract
This paper investigates the frequency regulation problem of an power system with redox flow battery (RFB). Due to the delayed response of the speed governor mechanism, controllers are unable to reduce frequency deviations during high load disturbances in the areas. As a result, redox flow batteries (RFBs) are added to single area power system to increase the system dynamic performance due to their rapid response and smaller time constant. A robust fractional-order sliding mode control (FOSMC) scheme is proposed for frequency regulation of power system with RFB. The developed controllers ensure the controlled system's asymptotic stability of closed-loop system. Then FOSMC control law is designed to satisfy the reaching condition and reduce the chattering in the controller output. The outputs of FOSMC are compared to conventional SMC.
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