Particle swarm optimisation based DG allocation in primary distribution networks for voltage profile improvement and loss reduction

Abstract

As there are many potential benefits by integrating the distributed generation (DG) units in a distribution network over conventional system, DG plays a vital role in a power system network. Renewable energy based DG units are located close to the consumers or load centers in order to improve voltage profile, reduce the network power losses and improves substation capacity release etc. Thus, while allocating DG units care has to be taken in order to maximize the benefits. In this thesis, by installing DG, an optimal way of managing real and reactive power and improving the nodal voltages in primary distribution network explained. Optimal location of DG is identified by using voltage stability index (VSI). The optimal rating of DG is computed by using Particle Swarm Optimization (PSO) technique to ensure reduction in power losses and to attain better voltage regulation. To demonstrate the efficiency of proposed techniques a clear and detailed analysis of performance has been carried out on IEEE-33 & 69 bus systems