Abstract:
Distributed generation (DG), from the last few decades, has become the viable option
in distribution systems (DSs) to mitigate the power losses caused by substantial
increase in electricity demand and to improve the voltage profile by enhancing power
system reliability. In this study, two metaheuristic algorithms GTO and TDO are
presented to examine the utilization of DGs as well as the optimal sitting and sizing in
DS with special emphasis on maximizing voltage stability index, minimizing total
operating cost index and active power loss along with minimization of voltage
deviation. The robustness of the algorithms is examined on IEEE 33 bus and IEEE 69
bus radial distribution networks (RDNs) for PV and wind based DGs. The obtained
results are compared with the existing literature to validate the effectiveness of the
algorithms. The reduction of the active power loss is 93.15% and 96.87% of initial
value for 33 bus and for 69 bus RDN respectively while the other parameters i.e.,
operating cost index, voltage deviation and voltage stability index are also improved
that validate the efficiency of the algorithms. The proposed study is also carried out
by considering different voltage dependent load models like industrial, residential and
commercial.
