Techno-economic Analysis of Non-linear DG Penetration in Radial Distribution Systems
DOI:
https://doi.org/10.13052/dgaej2156-3306.3243Keywords:
Distributed Generation, Harmonic distortion, Shunt Ca - pacitor, Radial Distribution System, Voltage Harmonics, Total Harmonic DistortionAbstract
Increasing penetration of Distributed Generation (DG) in recent
years has presented new challenges for planning and optimal operation
of integrated distribution systems. In this scenario, harmonic distortions
caused by non-linear DG operation in the distribution networks have
further added to the complexities of regulating such interconnected
systems. In this article, a comprehensive analysis of unbalanced radial
distribution systems (RDS) integrated with non-linear DG has been at -
tempted. The analytical assessment has been carried out by considering
various voltage harmonics in non-linear DG in the presence of shunt ca-
pacitors in the radial distribution systems. Results are obtained for Total
Harmonic Distortion (THD) of voltage and current at various buses of
the RDS, along with harmonic power profile. An economic assessment
of annual energy loss in the presence of non-linear DG has also been at-
tempted. The proposed method is tested on two IEEE radial distribution
feeders interconnected with non-linear DG. Results show that the pres-
ence of even acceptable level of voltage harmonics in non-linear DG can
cause severe harmonic amplification in the entire network, consequently
leading to increased energy losses for certain harmonic orders.
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