Design of cuckoo search based optimized PI controller for improving stability of a PV based micro grid

In today's world renewable energy sources (like PV, wind etc) has become one of the most promising source of energy for our generation because of its positive effect on environment. One of the main aspects that has to be taken care of is the stability of the system when subjected to various fault conditions. This paper presents the design of PI controller for a PV connected micro grid where the stability factor is taken into consideration under various faults like LLLG fault, grid voltage frequency variation. A comparative study was made between the conventional PI controller and the optimized PI controller. The optimization was done with the help of cuckoo search optimization technique and the result was found out with the help of MATLAB/SIMULINK.