Papers by Author: A.K. Inyanda

Abstract: Load Frequency Controllers (LFC) are required to maintain constant power and frequency in inter-connected power generating systems. Differential Evolution (DE) based optimal tuning of load frequency controller of two area inter-connected power system is presented in this paper. The proposed method optimizes the parameter of Integral controller by selecting the optimal gain which drives the change in frequency in the two areas and change in tie-line power flow to zero within the shortest time span. Simulation results on two networks revealed that the proposed controller dampened the frequency oscillations and restores the system frequency and tie-line power to set value after a step load disturbance.

Abstract: The task of load frequency controller (LFC) is to maintain the area generation–demand balance by adjusting the outputs on regulating units in response to deviations of frequency and tie-line power exchange. In this paper, the gain of an integral controller for a two area interconnected power system is designed based on the particle swarm optimization (PSO) technique. PSO is a population based stochastic optimization technique derived from simulation of simplified social model. Simulation results on a two area network revealed that the proposed approach optimizes the parameter of integral controller by selecting the optimal gain, which dampens the frequency oscillations and change in tie-line power to zero following a step disturbance.