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Abstract

The deployment of utility-scale energy storage systems (ESSs) can be a significant avenue for improving the performance of distribution networks. An optimally placed ESS can reduce power losses and line loading, mitigate peak network demand, improve voltage profile, and in some cases contribute to the network fault level diagnosis. This paper proposes a strategy for optimal placement of distributed ESSs in distribution networks to minimize voltage deviation, line loading, and power losses. The optimal placement of distributed ESSs is investigated in a medium voltage IEEE-33 bus distribution system, which is influenced by a high penetration of renewable (solar and wind) distributed generation, for two scenarios: (1) with a uniform ESS size and (2) with non-uniform ESS sizes. System models for the proposed implementations are developed, analyzed, and tested using DIgSILENT PowerFactory. The artificial bee colony optimization approach is employed to optimize the objective function parameters through a Python script automating simulation events in PowerFactory. The optimization results, obtained from the artificial bee colony approach, are also compared with the use of a particle swarm optimization algorithm. The simulation results suggest that the proposed ESS placement approach can successfully achieve the objectives of voltage profile improvement, line loading minimization, and power loss reduction, and thereby significantly improve distribution network performance.

Item Type:	Article
Authors/Creators:	Das, CK and Bass, O and Kothapalli, G and Mahmoud, TS and Habibi, D
Keywords:	Energy storage systems, Energy storage system allocation, Voltage profile improvement, Line loading reduction, Power loss minimization, Particle swarm optimization, Artificial bee colony optimization
Journal or Publication Title:	Applied Energy
Publisher:	Elsevier
ISSN:	0306-2619
DOI / ID Number:	10.1016/j.apenergy.2018.07.100
Copyright Information:	© 2018 Elsevier Ltd. All rights reserved.
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