Optimal DG placement and sizing for power loss reduction in a radial distribution system using MPGSA and sensitivity index method

This paper presents a new Maximum Power Loss Sensitivity (MPLS) method and Modified Plant Growth Simulation Algorithm (MPGSA) to find the optimal placement and size of Distributed Generation (DG). This study aims to reduce the total power loss and to improve the voltage profile. The proposed solution method has two steps: first, the MPLS is used to select the optimal position of the DG. Second, the MPGSA is used to find the optimal capacity of DG and then applied on an IEEE 33-bus system. However, this proposal can be implemented for renewable and non-renewable DGs. The results of the proposed algorithm were superior to the other methods in terms of minimizing the power loss and enhancing the voltage profile.