Optimum energy management strategy for renewable integrated microgrid

Abstract

This paper emphasizes on optimal power flow analysis in order to optimize the overall resource utilization while minimizing operating fuel cost, overall active power loss, and adverse environmental effects to satisfy customer's end use requirements. The conventional energy consumption is growing at an alarming rate which leads to many adverse phenomena such as global energy crisis, carbon dioxide emission and global surface mean temperature rise. The main objective is to identify the optimal system scheduling of hydropower plants, thermal plants and wind farms with minimum operating cost and loss with the incorporation of the wind farm in the system. Four different cases such as with and without thermal, with and without wind farm are considered. The most cost effective load scheduling is obtained by renewable integration. The proposed methodology is tested on Kerala grid 220KV–26 bus system with maximum wind penetration and the results are validated by using simple IEEE 6 bus test system results. The Kerala grid system is proven to be stable and secure in saddle-node bifurcation results using continuous power flow analysis while satisfying all the constraints.