Optimal Coordination of Electric Vehicles and Distributed Generators for Voltage Unbalance and Neutral Current Compensation

Islam, Rabiul; Lu, Haiyan; Hossain, M. J.; Li, Li

doi:10.1109/tia.2020.3037275

Cited by 15 publications

(4 citation statements)

References 27 publications

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“…Integration of EVs and PV along with an optimal power flow algorithm [29] Voltage unbalance Intelligent charging strategies Hierarchical control to address voltage unbalance by incorporating central and local controls [30] Stability and frequency regulation…”

Section: Renewable Resources Utilizationmentioning

confidence: 99%

“…This may lead to elevated network congestion, increased peak load, harmonic distortions, and may also lead to disrupted protective relays operation [22][23]. Additionally, these imbalances contribute to higher power losses, overheating in neutral lines, which leads to further elevated operational and maintenance expenses within the power system [29][41].…”

Section: Voltage Unbalancementioning

confidence: 99%

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Electric Vehicles: From Charging Infrastructure to Impacts on Utility Grid

Ibrahim,

Gaber

2024

Advances in Transdisciplinary Engineering

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Electric vehicles (EVs) are penetrating rapidly into the transport sector, profoundly impacting the electricity and energy sectors. While EVs bring many benefits, they present challenges to utility grid operators, particularly during charging their batteries. Uncoordinated charging stands out as a critical charging strategy requiring attention to mitigate potential adverse effects on power grids. Smart charging and vehicle-to-grid (V2G) technologies enable intelligent and bidirectional power transfer between the EV and the grid taking into account network conditions and requirements. However, the widespread adoption of these technologies depends on the formulation of effective infrastructure and regulatory frameworks. This paper presents the effects of unmanaged charging of EVs on the utility grid power quality such as voltage violations, utility assets overloading and harmonic distortion. The paper also sheds light on some mitigation strategies incorporated in literature to reduce the adverse effects of EV integration.

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Section: Renewable Resources Utilizationmentioning

confidence: 99%

Section: Voltage Unbalancementioning

confidence: 99%

Electric Vehicles: From Charging Infrastructure to Impacts on Utility Grid

Ibrahim,

Gaber

2024

Advances in Transdisciplinary Engineering

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“…From power quality standpoints, the voltage unbalance and neutral current indices basically characterise the grid quality performance. Authors of [112] have thus developed the hierarchical control strategy having central and local controls to mitigate voltage unbalance and neutral current as shown in Figure 14. In the primary control layer presented on the far left of Figure 14, the central controller communicates with distribution network operators and with PV owners for coordinating phases along with PVs dispatch.…”

Section: Summary Of Existing Solutions For the Voltage Unbalance Comp...mentioning

confidence: 99%

“…[109], the Volt-VAr droop control of single-phase DERs is deployed not only for voltage regulation but also for voltage unbalance compensation by forming the delta and wye configurations among single-phase PV inverters. The optimal charging and discharging strategies [110][111][112][113][114][115] have been developed to reduce the voltage unbalance by applying the constraint on the voltage unbalance with multiple objective functions. The Steinmetz design in refs.…”

Section: Voltage Unbalance Compensationmentioning

confidence: 99%

Comprehensive review and a novel technique on voltage unbalance compensation

2023

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Voltage unbalance has gained more attention due to a rapid increase in single-phase distributed energy resources (DERs) penetration compound with existing unbalance characteristics of low voltage distribution network. The purposes of this article are to summarise various techniques on voltage unbalance compensation from three different strategies: (1) techniques based on passive approach and advanced power electronics; (2) Techniques based on three-phase DERs; (3) techniques based on single-phase DERs. In addition, a novel voltage unbalance compensation technique that applies a voltage sensitivity analysis along with a symmetrical component concept to meet a desired voltage unbalance factor (VUF) is introduced in this article. Coordination among single-phase DERs that contributes in the voltage unbalance compensation is also considered. In order to evaluate the effectiveness of this proposed technique, its results are compared with the results that are obtained using a current unbalance compensation strategy. The results indicate that the novel technique proposed in this study provides more stable voltage unbalance compensation while successfully achieving the specified VUF thresholds. K E Y W O R D Sdistribution networks, electric vehicles, photovoltaic power systems, quality control, reactive power control, renewable energy sources, voltage controlThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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