Results 11 to 20 of about 3,848 (137)

A Comprehensive Analysis of the Voltage Unbalance Factor in PV and EV Rich Non-Synthetic Low Voltage Distribution Networks

Energies, 2020
With the development of technology and the decrease in prices, power systems are facing a strong growth in the number of end-users with photovoltaics (PVs), battery storages and electric vehicles (EVs).
Tomislav Antić, Tomislav Capuder, Martin Bolfek   +2 more
doaj   +2 more sources

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, Mohamed Emad A. Farrag, Donald M. Hepburn, Chengke Zhou   +3 more
doaj   +2 more sources

Flexibility Service Design for Mitigating Voltage Unbalance in the Distribution Network [PDF]

2023 IEEE Belgrade PowerTech, 2023
It is expected that unbalanced voltages will increase in future distribution systems as the level of single-phase distributed energy resources (DERs) rises significantly, and this paper presents a methodology to address such problems.
Jiabin Fan, I. Kockar
semanticscholar   +2 more sources

Distributed Cooperative Secondary Voltage Control in an Unbalanced Microgrid

CSEE Journal of Power and Energy Systems
The negative-sequence reactive power-conductance (Q-G) droop control strategy is a conventional method to compensate for the output unbalanced voltages in an islanded MG.
Xiangzhen Yang, Haixi Zhao, Mengke Duan, Yan Du, Haining Wang, Jian Zhang   +5 more
doaj   +2 more sources

Applicability of true voltage unbalance approximation formula for unbalance monitoring in LV networks with single-phase distributed generation

International Conference on Smart Grids and Green IT Systems, 2016
In the hierarchy of power transmission and distribution systems, the three-phase LV distribution networks are most susceptible to voltage unbalance (VU).
O. Gagrica, T. Uhl, P. Nguyen, J. Cobben
semanticscholar   +3 more sources

Robust Optimal Allocation of Decentralized Reactive Power Compensation in Three-Phase Four-Wire Low-Voltage Distribution Networks Considering the Uncertainty of Photovoltaic Generation

Energies, 2019
Due to the unbalanced three-phase loads, the single-phase distributed photovoltaic (PV) integration, the long feeders, and the heavy loads in a three-phase four-wire low voltage distribution network (LVDN), the voltage unbalance factor (VUF), the network
Shunjiang Lin, Sen He, Haipeng Zhang, Mingbo Liu, Zhiqiang Tang, Hao Jiang, Yunong Song   +6 more
doaj   +2 more sources

Multi-Period Optimization of Energy Demand Control for Electric Vehicles in Unbalanced Electrical Power Systems Considering the Center Load Distance of Charging Station Areas

Engineering Access
The rise of plug-in electric vehicles (EVs) impacts the energy demand of power systems. This study employed a multi-period power flow analysis on the IEEE 123 node test system, which was optimized for the installation of 6-position EV charging stations ...
Noppanut Chitgreeyan, Pongsuk Pilalum, Supapradit Marsong, Somchat Sonasang, Prakasit Prabpal, Dieu Ngoc Vo, Krittidet Buayai, Kaan Kerdchuen, Yuttana Kongjeen   +8 more
doaj   +3 more sources

Multi-Timescale Voltage Regulation for Distribution Network with High Photovoltaic Penetration via Coordinated Control of Multiple Devices

Energies
The high penetration of distributed photovoltaics (PV) in distribution networks (DNs) results in voltage violations, imbalances, and flickers, leading to significant disruptions in DN stability.
Qingyuan Yan, Xunxun Chen, Ling Xing, Xinyu Guo, Chenchen Zhu   +4 more
doaj   +2 more sources

Theoretical analysis of the voltage unbalance factor to characterize unbalance problems in induction motors [PDF]

, 2021
Voltage Unbalance (VU) is one of the most common power quality problems in industrial electrical systems and it is a subject of systematic study. This problem affects the operation and the efficiency of Induction Motors (ims), which are the loads that ...
Sousa Santos, Vladimir, Gómez, Julio Rafael, Viego, Percy R., Quispe, Enrique C., López, Iván Domínguez   +4 more
core   +1 more source

Loss Minimization for Bipolar DC Distribution Grid Considering Probabilistic EV Charging Load Using Load Balancing Method

IEEE Access, 2023
This paper proposes a novel method for power loss minimization and voltage unbalance mitigation in bipolar DC distribution grid (DCDG) considering probabilistic electric vehicle (EV) charging load.
Guntinan Sakulphaisan, Keerati Chayakulkheeree   +1 more
doaj   +1 more source