Distributed Generator Placement And Sizing in Unbalanced Radial Distribution System
DOI:
https://doi.org/10.13052/dgaej2156-3306.2514Keywords:
Distributed generator, unbalanced radial distribution system, voltage index analysis, variational algorithm.Abstract
To minimize power losses, it is important to determine the location
and size of local generators to be placed in unbalanced power distribu-
tion systems. Because of some inherent features of unbalanced distribu-
tion systems, such as radial structure, large number of nodes, and a
wide range of X/R ratios, the conventional techniques developed for
the transmission systems generally fail to determine optimum size and
location for distributed generation (DG). This article presents a simple
method for investigating the problem of contemporaneously choosing
the best location and capacity of DG in three-phase unbalanced radial
distribution systems (URDS) for power loss minimization and to im-
prove the voltage profile of the system. The best DG location is deter-
mined by using voltage index analysis, and capacity of DG is computed
by a variational technique algorithm according to the available standard
capacity of DG. This article presents the results of simulations for 25-bus
and IEEE 37-bus unbalanced radial distribution system.
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