Maximizing Hosting Capacity of Single-Phase Rooftop PVs in Unbalanced Distribution Systems
Loading...
Access rights
openAccess
acceptedVersion
URL
Journal Title
Journal ISSN
Volume Title
A4 Artikkeli konferenssijulkaisussa
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Unless otherwise stated, all rights belong to the author. You may download, display and print this publication for Your own personal use. Commercial use is prohibited.
Date
2024-10-14
Major/Subject
Mcode
Degree programme
Language
en
Pages
Series
2024 IEEE PES Innovative Smart Grid Technologies Europe (ISGT EUROPE)
Abstract
Increased installation of single-phase rooftop photovoltaic (PV) systems (SPPVs) and unbalanced loads in low-voltage distribution networks (LVDNs) may cause deterioration in the overall network performance. Major impacts include voltage unbalance, power losses, thermal overloading of lines, and other power quality issues. Therefore, it is crucial for robust integration coordination of SPPVs with proper sizing and placement to sustain the acceptable limits of power quality indices especially in unbalanced three-phase systems. This paper proposes an optimal capacity allocation of SPPVs method, which not only aids in minimizing the voltage unbalance, power losses, and lines’ overloads but also increases the hosting capacity (HC) of LVDNs. HC boosting enables to accommodating of an excessive capacity of SPPVs besides reducing the exchanged power through the utility grid. This work is demonstrated using an IEEE 123-bus unbalanced distribution system and simulated using daily curves of PV generations and load demands by co-simulation between MATLAB and OpenDSS platforms. Initially, the studied LVDN is divided into five operational zones, each zone has aggregated bulk generation of SPPVs switched only on single-phase. Then, the multi-objective grey wolf optimization (MOGWO) algorithm is operated to select the appropriate capacity, connected phase, and location of SPPVs at each operational zone. As a result, the voltage unbalance, power losses, and imported grid power, declined by 10%, 32% (31 kW at 100% overloading), and 26%, respectively. Further, the HC of LVDNs is increased by 185%, which highlights that the integration of SPPVs can improve power quality using accurate capacity allocation for bulk generation.Description
Keywords
Hosting Capacity, Unbalanced distribution system, Voltage Unbalance, Single- phase PVs
Other note
Citation
Mousa, H H H, Mahmoud, K & Lehtonen, M 2024, Maximizing Hosting Capacity of Single-Phase Rooftop PVs in Unbalanced Distribution Systems . in 2024 IEEE PES Innovative Smart Grid Technologies Europe (ISGT EUROPE) . IEEE, IEEE PES Europe Conference on Innovative Smart Grid Technologies, Dubrovnik, Croatia, 14/10/2024 . https://doi.org/10.1109/isgteurope62998.2024.10863687