Optimal Location and Rating of Dg with Improved Bio-Geography for Loss Minimization in Distributed Networks

Abstract

Distributed generation (DG) units and capacitor banks can be placed at the same time in the distribution network using a novel technique called biogeography-based optimization (BBO). Nonlinear loads have been taken into consideration throughout the optimization process (a cause of harmonic injection). The goal is to minimise both active and reactive losses by placing the DG and the capacitor at the ideal location. Congestion in power networks has been caused by the reorganisation of power systems and the ever-increasing demand for electricity. To address these challenges, the usage of distributed generators (DGs) may play an important role. For example, DGs may be incorporated into electrical transmission lines to moderate voltage fluctuations, hence enhancing power transfer capacities and improving overall electrical networks' performance by regulating voltage drifts. To minimise losses in distributed networks, this research offers an effective biogeography-based optimization (BBO) for the optimal location and rating of DG for loss minimization while preserving voltage profile and voltage harmonic distortion at the limits.

Keywords: grid, loss minimization, distributed generation, biogeography-based optimization