Results 11 to 20 of about 9,922 (292)

New Smart Sensor for Voltage Unbalance Measurements in Electrical Power Systems [PDF]

Sensors, 2022
This paper deals with voltage unbalances and how they can be quantified according to the standards. Firstly, a comparison between the different unbalance voltage factors is conducted in order to remark on their divergences.
Santiago Bogarra, Jaime Saura, Alejandro Rolán   +2 more
doaj   +2 more sources

Estimation of power factor by the analysis of Power Quality data for voltage unbalance [PDF]

2009 Third International Conference on Electrical Engineering, 2009
Power Quality (PQ) has been identified as a complex and diversified problem across the board in electrical power industry. It has not only confused the power utilities but also has attracted the attention of its customers and equipment manufacturers. Although extensive research work is being done in this field but one of the main problem encountered by
Paracha, Zahir Javed, Kalam, Akhtar, Mehdi, Ahmed M, Amanullah, M. T. O   +3 more
openaire   +3 more sources

Development and Analysis of a Sensitivity Matrix of a Three-Phase Voltage Unbalance Factor [PDF]

IEEE Transactions on Power Systems, 2018
Unbalanced phase voltages in electricity networks prevent efficient and stable delivery of power and energy services from utility companies to end-users, and vice versa. While variations in voltage magnitude and power loss have been studied extensively, little attention has been paid to the development of linearized expressions to account for the ...
Young-Jin Kim, KIM, YOUNGJIN
openaire   +3 more sources

Unbalance characteristics of fundamental and harmonic currents of three‐phase electric vehicle battery chargers

IET Generation, Transmission & Distribution, 2020
Three‐phase electric vehicle (EV) battery chargers are expected to not impact the unbalance of distribution networks; moreover, using active power factor correction topologies they are expected to behave like resistive loads not affecting the system ...
Jesus C. Hernández, Roberto Langella, Antonio Cano, Alfredo Testa   +3 more
doaj   +2 more sources

Development of a Novel Control Scheme to Achieve the Minimum Unbalance Factor and Real Power Fluctuations under Asymmetrical Faults

Energies, 2023
The increasing share of converter-based renewable energy sources in the power system has forced the system operators to demand voltage support from the converters in case of faults.
Muhammad Abubakar, Herwig Renner, Robert Schürhuber   +2 more
doaj   +2 more sources

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

Development of hardware and software for calculation and monitoring of the unbalance factor in three­phase voltage system

Eastern-European Journal of Enterprise Technologies, 2018
Hardware and software for measuring and monitoring the unbalance factor of the three-phase voltage system is developed. The shortcomings of the existing technical and software solutions for calculating the unbalance factor, as well as problems of applying the methods used for analog control systems to digital systems are described. The block diagram of
Al-Suod, M. M. (Mahmoud)
openaire   +4 more sources

Bi-Level Phase Load Balancing Methodology with Clustering-Based Consumers’ Selection Criterion for Switching Device Placement in Low Voltage Distribution Networks

Mathematics, 2021
In the last years, the distribution network operators (DNOs) assumed transition strategies of the electric distribution networks (EDNs) towards the active areas of the microgrids where, regardless of the operating regimes, flexibility, economic ...
Gheorghe Grigoraș, Bogdan-Constantin Neagu, Florina Scarlatache, Livia Noroc, Ecaterina Chelaru   +4 more
doaj   +1 more source

Performance Analysis and Modeling of SRRCCIM under the Impact of Unbalance Supply Voltage [PDF]

Journal of Electrical and Electronics Engineering, 2021
This paper develops a mathematical model for analyzing the steady state performance of the static rotor resistance chopper control induction motor (SRRCCIM) operates under unbalance supply voltage conditions.
AMEEN Hilmi, AULA Fadhil
doaj  

Research on Spatial Unbalance and Influencing Factors of Ecological Well-Being Performance in China [PDF]

International Journal of Environmental Research and Public Health, 2021
Ecological well-being performance (EWP) is central to achieving coordinated and sustainable economic and social development and environmental protection. This study constructed an evaluation index system of EWP, measured the EWP of 30 Chinese provinces or cities from 1997 to 2018 using the super-efficiency slack-based model (Super-SBM), and analyzed ...
Shengyun Wang, Yaxin Zhang, Xingren Yao
openaire   +2 more sources