Review of Load Frequency Control methods, Part-I: Introduction and Pre-deregulation Scenario

In an electric power system, which is one of the most complicated systems among any non-natural systems, Load Frequency Control (LFC) has always been an important and critical issue. Therefore, many configurations of power system model, variety of control strategies and a number of controllers have been proposed in the literature for making LFC more effective, robust, adaptive and efficient. In this work, which is divided into two parts, namely, `Part-I: Introduction and Pre-deregulation Scenario' and `Part-II: Post-deregulation Scenario and Case Studies' attempt has been made to provide literature review on LFC. This paper discusses fundamental aspects of LFC followed by some LFC methods that were proposed for pre-deregulation scenario. Significance of these methods in the present scenario has been highlighted.