JPS_V1_N2_A1 Gopi Pasala I. Prabhakar Reddy P. Linga Reddy Journal on Power Systems Engineering 2322–0376 1 2 1 8 Automatic Generation Control (AGC), Load Frequency Control (LFC), Control Schemes, Multi-Area Interconnected Power System The load frequency control problem is non interactive mainly due to small load variations in power system. Maintaining power system frequency at constant value is very important for the health of the power generating equipment and the utilization equipment at the customer end. The job of automatic frequency regulation is achieved by governing systems of individual turbine-generators and Automatic Generation Control or Load frequency control system of the power system. The main objective of this paper is to present a critical literature review and aimed to highlight the various control and structural aspects of Automatic Generation Control used in multi area interconnected power system. Also this paper work reported in the Automatic Generation Control schemes based on power system models and control strategies are reviewed. May - July 2013 Copyright © 2013 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=2360