Simulation and Assessment of Load Frequency Control Under Deregulated Environment Using Linear Quadratic Regulator

Abstract

Automatic generation control is a significant control process that operates constantly to balance the generation and load in power systems at a minimum cost. The AGC system is responsible for frequency control, power interchange and economic dispatch. This thesis reviews the main structures, configurations, modeling and characteristics of Automatic Generation Control systems in a deregulated environment and addresses the control area concept in restructured Power Systems. The concept of DISCO participation matrix is introduced and reflected in the two-area diagram to make the visualization of contract easier. The modification by superimposition of information flow on the Traditional AGC two-area system is done to take into account the effect of bilateral contracts on the dynamics and the simulations reveal some interesting patterns. Optimization of linear controller gain setting is done using Linear Quadratic Controller (LQR). To validate the effectiveness of LQR robust controller, the simulation has been performed using proposed controller and comparison has been done with conventional