Results 21 to 30 of about 75,184 (263)

Fault Ride through Capability Analysis (FRT) in Wind Power Plants with Doubly Fed Induction Generators for Smart Grid Technologies

open access: yesEnergies, 2020
Faults in electrical networks are among the key factors and sources of network disturbances. Control and automation strategies are among the key fault clearing techniques responsible for the safe operation of the system. Several researchers have revealed
Aphrodis Nduwamungu   +3 more
doaj   +1 more source

Synchronizing a synchronverter to an unbalanced power grid using sequence component decomposition

open access: yesNonlinear Engineering, 2022
The synchronverter is a device used in some microgrids to perform self-synchronization and represent the behavior of a synchronous machine. However, the original control has been proposed for balanced networks, which is not present in all distribution ...
Quintero-Duran Michell J.   +2 more
doaj   +1 more source

Method for digital processing of a three-phase signal for extraction symmetric components

open access: yesВестник Северо-Кавказского федерального университета, 2022
The paper proposes to the development of methods for assessing the level of current and voltage asymmetry in three-phase electrical networks. The main direction of research in this work is the creation of a simple hardware-oriented method for extracting ...
A. М. Petrov, D. A. Kostyukov
doaj   +1 more source

СURRENT FILTERING IN A THREE-PHASE THREE-WIRE POWER SYSTEM AT ASYMMETRIC SINUSOIDAL VOLTAGES

open access: yesElectrical engineering & Electromechanics, 2018
Purpose. Investigation of the optimal current distribution between source, shunt active filter and reactive compensator of a three-phase three-wire system that provides consumption of a sinusoidal symmetric current under asymmetric source voltages with ...
M. Yu. Artemenko   +2 more
doaj   +1 more source

A Study of Symmetrical and Unsymmetrical Short Circuit Fault Analyses in Power Systems

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2019
In this study, thecommon symmetrical and unsymmetrical short circuit faults in power systems areanalyzed detailed. Unlike the similar studies in the literature, metallic faultconditions for unsymmetrical faults are also given in the paper additionally ...
Yılmaz Yıldırım, Faruk Yalçın
doaj   +1 more source

Extended properties of nonlinear power system models that are symmetrically configured in the narrow sense

open access: yesInternational Journal of Electrical Power & Energy Systems
Three-phase circuits that are Symmetrically Configured in the Narrow Sense (SCNS) have been defined in previous works as circuits which dq0 dynamic model does not depend on the transformation’s reference angle.
Elior Segev   +4 more
doaj   +1 more source

Impact of Apparent Reactance Injected by TCSR on Distance Relay in Presence Phase to Earth Fault

open access: yesAdvances in Electrical and Electronic Engineering, 2013
This research paper presents the impact study of apparent reactance injected by series Flexible AC Transmission System (FACTS) i.e. Thyristor Controlled Series Reactor (TCSR) on the measured impedance of a 400 kV single electrical transmission line in ...
Mohamed Zellagui, Abdelaziz Chaghi
doaj   +1 more source

Analysis of the Possibilities of Selective Detection of a Single Line-to-Ground Fault in a Medium Voltage Network with Isolated Neutral

open access: yesEnergies, 2021
The paper analyses how the characteristics of the medium-voltage network with insulated neutral and the conditions under which the single line-to-ground fault occurs (insulation condition and value of the fault resistance) influence the zero-sequence ...
Dumitru Toader   +4 more
doaj   +1 more source

Rigorous Mathematical Steps for Sensitivity Analysis of High Impedance Ground Fault Detection in Power Distribution Systems

open access: yesCogent Engineering, 2020
A literature survey indicated that high impedance fault (HIF) detection methods employ simulation techniques using very low voltage signals generated using software such as PSCAD, and MATLAB, among others.
P. Velmurugan, A. B. Chattopadhayay
doaj   +1 more source

Application of Magnitude and Phase Angle to Boundary Area-Based Algorithm for Unbalance Relay Protection Scheme in 115-kV Capacitor Bank

open access: yesIEEE Access, 2021
Identification of fault locations in capacitor banks is still under development. Although, faults in capacitor banks can be detected by an unbalance relay, it cannot identify the fault location.
Praikanok Lertwanitrot   +1 more
doaj   +1 more source

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