Optimization of Multi Objective Load Frequency Control Using Cuckoo Search Algorithm

The present work emphasis on multi-objective frequency controller to regulate operating frequency by controlling the governor settings. Goal of PID controller is to retain the frequency deviation within bounds in a short span of time period, since interconnected power system has many frequency dependant loads. However, the proposed controller design also aimed at minimum peak overshoot, shortest settling time and stability of system. A multi objective function was considered by confining these dynamic response specifications. Optimization of multi-objective function was carried with the aid of soft computing methodologies. Superiority of multi-objective function was tested by generating different test cases using Cuckoo Search optimization (CS) algorithm. The proposed multi-objective function performs better and reasonably maintains good equilibrium between frequency changes and transient oscillations.