Type-2 Fuzzy Controller based Load Frequency Control of Interconnected System with/without ACDC Link

Abstract

Enchantment of a stable equilibrium between the increasing demand and load is the essential stipulation of the system. The interconnected power sources in modern power engineering, lead to the interchange of power between the tie lines by virtue of semiconductor devices. The dynamic nature of the load and power insist on a perfect equilibrium between both during disturbances. The frequency and the voltage of the generating system are the vital constraints that need to be maintained at their stated value for the favorable operation.  This paper elucidate a powerful controller for frequency & tie line power of a two area three unit distinct energy established source with nonlinear thermal power (TPS), hydro power (HPP) and gas power (GPP) plant  in the form of  a new type-II fuzzy PID to diminish the local errors. To justify supremacy of proposed type-II fuzzy controller a comparative analysis with fuzzy type-I and PID controllers has been carried out. To obtain precious gain parameters for the above implemented controllers, a novel Grass Hopper Optimization has been proposed for the study.