DESIGN OF MOEA BASED DECENTRALIZED LOAD-FREQUENCY CONTROLLERS FOR INTERCONNECTED POWER SYSTEMS WITH GDB NONLINEARITY

Abstract

A new design of Multi-Objective Evolutionary Algorithm (MOEA) based decentralized load-frequency controller for interconnected power systems with Governor Dead band (GDB) Nonlinearity is proposed in this paper. The proposed controller fulfills two main objectives, namely minimum Integral squared error of the system output and maximum closed loop stability of the system. The proposed design procedure is applied to an interconnected two-area thermal power system. The simulation results reveal the effectiveness of the proposed controller to provide better dynamic response with less transients and quick settling time with improved stability margin when compared to a conventional controller.