Fuzzy Compensated PI Controller Design for Load Frequency Control

A.J.D. Jiya (Nigeria) and J.T. Agee (Botswana)


Power system control, PI control, Fuzzy Control, Load Frequency Control, Automatic generation control.


This paper presents a Fuzzy compensated PI controller design for load frequency control of the Nigerian Hydrothermal power system. The fuzzy compensator operates on top of the existing PI controller and does not require a priori knowledge of the controlled system and acts as a supplementary controller to the system. A comparative simulation study of conventional PI controller with fuzzy compensated PI controller show that the proposed controller can yield a better dynamic response following a step load change.

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