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Control strategy for microgrid under three-phase unbalance condition [PDF]
Journal of Modern Power Systems and Clean Energy, 2016 Microgrid (MG) is generally developed at utility terminal which contains lots of unbalanced loads and distributed generations (DGs). The interaction between MG and the unbalance loads or DGs will degrades the control performance of interfaced inverter in
Hongtao Shi +3 more
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Research on Reconfiguration of Distribution Network considering Three‐Phase Unbalance
Wireless Communications and Mobile Computing, 2022 In the distribution network, the addition of distributed power sources can improve the voltage part of the distribution system, provide uninterrupted power supply, and reduce network losses. The location of the power supply and its output will also directly affect the system voltage and power loss.
Xuejie Wang +7 more
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Three-Phase Unbalance Analysis Method Based on Three-Phase Motor Current Instantaneous Information
Applied Sciences, 2023 Motor current signal analysis is a common method that can be applied to the monitoring and diagnosis of electromechanical equipment. Three-phase unbalance will increase the line power loss and affect the safe operation of power-using equipment.
Xun Zhang +5 more
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IEEE Access, 2020 Three-phase unbalance issue can cause adverse impacts on the power quality of the solid-state transformer (SST) based AC/DC hybrid microgrid. In this paper, an unbalanced power control strategy for cascaded dual active bridge (DAB) converter is proposed.
Yuyang Li +4 more
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Three-Phase Primary Control for Unbalance Sharing between Distributed Generation Units in a Microgrid [PDF]
Energies, 2013 For islanded microgrids, droop-based control concepts have been developed both in single and three-phase variants. The three-phase controllers often assume a balanced network; hence, unbalance sharing and/or mitigation remains a challenging issue ...
Tine L. Vandoorn +3 more
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Three-phase inverter-connected DG-units and voltage unbalance [PDF]
Electric Power Systems Research, 2011 The increasing presence of single-phase distributed generators and unbalanced loads in the electric power system may lead to unbalance of the three phase voltages, resulting in increased losses and heating. The distribution network operators (DNOs) are increasingly being challenged to maintain the required power quality.
Degroote, Lieven +4 more
core +5 more sources
Energies, 2019 In the low-voltage (LV) distribution network, a three-phase unbalance problem often exists. It does not only increase line loss but also threaten the safety of the distribution network. Therefore, the author designs a residential load transfer device for
Guanghai Bao, Sikai Ke
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Energies, 2022 The aim of this study is to improve the three-phase unbalanced voltage at the secondary side of a distribution transformer. The proposed method involves compensation sources injecting three different single-phase currents into the connected point of a ...
Chien-Kuo Chang +2 more
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Analysis and Research of Three-phase Unbalance in Distribution Transformers
IOP Conference Series: Earth and Environmental Science, 2019 The distribution transformer unbalanced operation status will affect the life of the transformer and increase the losses of the transformer besides a series of problems such as grid voltage drop, flicker, low power factor, line losses increase.
Benren Pan +4 more
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Point Estimate Method for Voltage Unbalance Evaluation in Residential Distribution Networks with High Penetration of Small Wind Turbines [PDF]
Energies, 2014 Voltage unbalance (VU) in residential distribution networks (RDNs) is mainly caused by load unbalance in three phases, resulting from network configuration and load-variations.
Chao Long +3 more
doaj +4 more sources