Load frequency control using Lyapunov's second method: Bang-bang control of speed changer position

TL;DR: An extensive literature review on load-frequency control (LFC) problem in power system has been highlighted in this article, where various configuration of power system models and control techniques/strategies that concerns to LFC issues have been addressed in conventional as well as distribution generation-based power systems.

TL;DR: In this paper, the authors provide an overview of control strategies for researchers, as well as of their current use in the field of load frequency control (LFC), and make various comparisons between these approaches, and the main advantages and disadvantages of the methods.

TL;DR: This paper presents a comprehensive literature survey on the topic of LFC, and investigates the used LFC models for diverse configurations of power systems and proposes proposed control strategies for LFC for both conventional and future smart power systems.

TL;DR: Based on the decentralized sliding mode control, a load frequency controller is designed in this article for multi-area interconnected power systems with matching and unmatched uncertainties, and a proportional and integral switching surface is constructed for each area to improve system dynamic performance in reaching intervals.

TL;DR: This paper records the development of a state variable model of the megawatt-frequency control problem of multiarea electric energy systems in a mathematical form necessary for application of theorems of modem optimal control theory.

TL;DR: In this article, a load-frequency control problem for interconnected systems is considered from the viewpoint of optimal stochastic system theory, and a control algorithm is developed which provides improved power system performance in both large and small signal modes of operation.

TL;DR: A method of reduction in the computation for multiarea load-frequency-control systems is considered using the method of aggregation due to Aoki, and in the case of the nonobservability of some of the states, an observer is constructed, and a controller that is almost an optimal controller is obtained.

TL;DR: In this paper, an explanation for diverging responses which have been reported in the literature when relay-type of controls are applied to linear systems which exhibit undamped oscillations is presented.