Solution of LFC Problem using PD+PI Double Loop Controller Tuned by SCA

Abstract

Here a double loop PD+PI controller is projected to resolve the load frequency control issue in a dual area conventional hybrid source system. Basing up on a time variant fitness function Sine-cosine algorithm is employed to tune the PD+PI double loop controller's gains. The dual area unified system comprises three types of generating sources in all the areas named as gas, hydro and thermal unit. The system behavior is examined under two dissimilar conditions i.e. in presence of HVDC link and in absence of HVDC link. For both type of investigations an abrupt load perturbation of 1% is considered in first control area. The dominance of projected PD+PI double controller is verified over existing results of PID type conventional controller throughout the examination.