Deregulated LFC scheme using equilibrium optimized Type-2 fuzzy controller

Abstract

This paper deals about the Load Frequency Control (LFC) of two-area deregulated power system with multiple generation sources using interval type-2 fuzzy proportional-integral-derivative (IT2FPID) controller. LFC is the mechanism by which the power system tries to restore its nominal frequency after it has been subjected to load fluctuations. The control areas considered for this paper comprise of thermal generating unit with reheat turbine and gas unit. Considering practical scenario of operation appropriate generation rate constraint (GRC) has been considered for each units. The gain parameters of IT2FPID controller have been optimized by Equilibrium Optimizer (EO). The dynamic response to load disturbances have been compared with prevalent controller schemes to bring about the efficacy of the prospective work.