DESIGN OF LOAD FREQUENCY CONTROLLER USING MULTI OBJECTIVE BAT ALGORITHM

Abstract

In this paper, load frequency control (LFC) of a two area system connected by a single tie-line is considered. The objective of LFC is to maintain generation-demand balance of an area by adjusting the outputs in response to the deviations in frequency and tie-line power on regulating units. A new meta-heuristic BAT Algorithm based on multi objectives and Pole placement techniques are used to design the LFC controllers like Integral (I) and Proportional Integral Derivative (PID) for their optimal gain setting values. BAT Algorithm is formulated from the echolocation behavior of bats. The objective of LFC and settling time are considered as the multi objectives for BAT algorithm. Simulations through MATLAB demonstrate that the conventional approach does provide good performances but with long settling time, whereas the proposed BAT algorithm on other hand satisfies all objectives thus ensuring system stability.