Abstract
AbstractIn a power system, frequency control is more sensitive to the variations of load. So, it needs proper balancing of generation and load demand. Linear controllers such as proportional integral (PI) do not account the non-linearity of the system. Their performance with non-linear power system may be ineffective. This project will present Sliding Mode Control (SMC) which has distinguished properties of accuracy, robustness and easy tuning performance. Due to these advantages SMC technique is effectual for LFC and most vigorous to the base parameter and uncertainties. The anticipated controller is set side by side with Proportional-Integral Derivative (PID), Tilt-Integral Controller (TID) and Fractional Order PID (FOPID) controllers for performance analysis and Grey Wolf Optimization (GWO) will be used to tune the parameters of controllers in Load Frequency Control (LFC). The proposed controller is applied to two area single unit LFC power system consist of thermal unit. To validate the usefulness of controllers, Integral of the Time Weighted Absolute Error (ITEA) performance index will be considered and 1% step load change will be applied. The resulting power system will be modelled and simulated in MATLAB/SIMULINK environment. The proposed work is effective in maintaining the frequency deviation, undershoots and overshoots of the power system to zero in a considerably less time with SMC compared to other controllers.KeywordsProportional-integral-derivative (PID)Tilt-integral-derivative (TID)Fractional order-proportional-integral-derivative (FOPID)Sliding mode controller (SMC)Grey wolf optimization (GWO)
Published Version
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