Optimal Solar Energy Penetration in South-East Zone of Bangladesh National Power System Grid

The Power system is now experiencing new challenges to meet the demand following the advancement of technology and scarcity of fuel. The incorporation of renewable energy like solar, wind, hydro is emerging with the existing resources to solve to these problems. In this paper, a revised network of the South-East zone of Bangladesh has been proposed to analyses the integration of large-scale solar energy with the conventional generation. To formulate the model, the linearized optimal power flow method has been used to determine the minimum operating cost while considering the rapid changes in power demand. The linearized interior point algorithm optimizes the system maintaining the transmission line flows limits and generation constraints. The model determines several decision variables such as the amount of generation, the line flow limit in the system, and the cost of generating stations. Several plausible cases have been studied without and with incorporating solar energy. A constructive future power system expansion decision has been made based upon the incorporation of renewable energy and changing the load demand in different practical scenarios.