Results 11 to 20 of about 24,134 (300)

Convex Model for Estimation of Single-Phase Photovoltaic Impact on Existing Voltage Unbalance in Distribution Networks

open access: yesApplied Sciences, 2020
Due to the increasing adoption of solar power generation, voltage unbalance estimation gets more attention in sparsely populated rural networks. This paper presents a Monte Carlo simulation augmented with convex mixed-integer quadratic programming to ...
Verner Püvi, Matti Lehtonen
doaj   +1 more source

Unbalanced Voltage Compensation with Optimal Voltage Controlled Regulators and Load Ratio Control Transformer

open access: yesEnergies, 2021
Penetration of equipment such as photovoltaic power generations (PV), heat pump water heaters (HP), and electric vehicles (EV) introduces voltage unbalance issues in distribution systems.
Akito Nakadomari   +6 more
doaj   +1 more source

Performance Analysis of the Slip Power Recovery Induction Motor Drive System Under Unbalance Supply Voltages

open access: yesAdvances in Electrical and Electronic Engineering, 2021
This paper develops a mathematical model for analyzing the steady-state performance of the Slip Power Recovery Induction Motor Drive System (SPRIMDS) which operates under unbalance supply voltage conditions.
Hilmi Fadhil Ameen, Fadhil Toufick Aula
doaj   +1 more source

Improved Method for Determining Voltage Unbalance Factor Using Induction Motors

open access: yesEnergies, 2022
This work shows an alternative method to determine the Voltage Unbalance Factor in a power grid by using both the mean value of the line voltages and Current Unbalance Factor in induction motors. Twenty unbalanced voltage points on three induction motors
Luis Guasch-Pesquer   +3 more
doaj   +1 more source

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

open access: yesJournal 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  

A Shared Energy Storage Optimal Operation Method Considering the Risk of Probabilistic Voltage Unbalance Factor Limit Violation

open access: yesShanghai Jiaotong Daxue xuebao, 2022
The distributed access with single-phase and uncertain generation of the renewable energy increase the risk of voltage unbalance limit violation in the distribution network.
FANG Xiaotao, YAN Zheng, WANG Han, XU Xiaoyuan, CHEN Yue
doaj   +1 more source

Using normalised cross correlation and variance to determine the source of voltage unbalance exceedances in Eskom networks with wind farms

open access: yesJournal of Energy in Southern Africa, 2019
During an exceedance of the voltage unbalance limit at a busbar there is a need to determine which entity is causing the problem between Eskom, wind farms and other entities that can influence the voltage unbalance at the busbar.
N. Ntsadu
doaj   +1 more source

Coherence‐based integrated detection and assessment algorithm for voltages and currents unbalance/disturbance in three‐phase synchronous generators: A validation of simulation results

open access: yesThe Journal of Engineering, 2023
The phenomenon of imbalance is a variation of voltage and current waveforms from a perfect sinusoidal waveform, which is considered a crucial challenge in power systems.
Ragab Abd Allah Mahmoud
doaj   +1 more source

Point estimate method for voltage unbalance evaluation in residential distribution networks with high penetration of small wind turbines [PDF]

open access: yes, 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.
Farrag , Mohamed Emad A.   +3 more
core   +2 more sources

Tradeoffs between AC power quality and DC bus ripple for 3-phase 3-wire inverter-connected devices within microgrids [PDF]

open access: yes, 2011
Visions of future power systems contain high penetrations of inverters which are used to convert power from dc (direct current) to ac (alternating current) or vice versa.
Burt, Graeme M.   +2 more
core   +1 more source

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