Results 41 to 50 of about 7,296,413 (350)

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

Energies, 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, Maria Vintan, Claudiu Solea, Daniela Vesa, Marian Greconici   +4 more
doaj   +1 more source

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

International 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, Vladimir Zhuk, Elinor Ginzburg-Ganz, Juri Belikov, Yoash Levron   +4 more
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

IEEE 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, Atthapol Ngaopitakkul   +1 more
doaj   +1 more source

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

Energies, 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, Etienne Ntagwirumugara, Francis Mulolani, Waqar Bashir   +3 more
doaj   +1 more source

Asymmetric Lineshape due to Inhomogeneous Broadening of the Crystal-Field Transitions in Mn12ac Single Crystals

, 2003
The lineshape of crystal-field transitions in single crystals of Mn12ac molecular magnets is determined by the magnetic history. The absorption lines are symmetric and Gaussian for the non-magnetized state obtained by zero-field cooling (zfc).
A. Caneschi, A. Cornia, A. Mukhin, A.A. Mukhin, A.A. Mukhin, A.A. Mukhin, A.L. Barra, B. Barbara, B. Gorshunov, B. Parks, D. Gatteschi, D.A. Garanin, E.M. Chudnovsky, I. Mirebeau, J. van Slageren, J.R. Friedman, K. Park, K. Park, K. Park, M. Dressel, M. Dressel, M. Hennion, N.V. Prokofev, R. Sessoli, S. Hill, S. Hill, S. Hill, S. Vongtragool, S.M.J. Aubin, S.M.J. Aubin, W. Wernsdorfer, W. Wernsdorfer, W. Wernsdorfer   +32 more
core   +1 more source

Field theory of massive and massless vector particles in the Duffin - Kemmer - Petiau formalism

, 2011
Field theory of massive and massless vector particles is considered in the first-order formalism. The Hamiltonian form of equations is obtained after the exclusion of non-dynamical components.
Ahieser A. I., Bogush A. A., Fedorov F. I., Fedorov F. I., Itzykson C., Kruglov S. I., Kruglov S. I., Kruglov S. I., Kruglov S. I., Moroz L. G., Oliver L., S. I. KRUGLOV, Umezawa H.   +12 more
core   +1 more source

Fault-Tolerant Controller Applied to a Wind System Using a Doubly Fed Induction Generator

Wind
Wind systems are sustainable and economical options for producing electrical energy. These systems efficiently manage the power flow by maximizing wind power and consuming reactive power from the grid.
Onofre Morfín, Diego Delgado, Alan Campos, Miguel Murillo, Jesús I. Hernández, Pedro Esquivel   +5 more
doaj   +1 more source

Analysis of drawbacks and constraints of classification algorithms for three-phase voltage dips [PDF]

, 2018
Voltage events are one of the most common and harmful disturbances of power electric systems. Voltage dips, swells and interruptions are included under this heading.
Carrica, Daniel Oscar, Carugati, Ignacio, Donato, Patricio Gabriel, Maestri, Sebastian Oscar, Orallo, Carlos Martin, Strack, Jorge Luis   +5 more
core   +1 more source

Performance Investigation of Three-Phase Three-Switch Direct PWM AC/AC Voltage Converters

IEEE Access, 2019
Reducing the number of active switches is substantial for obtaining a simple, reliable, high-efficiency, and cost-effective AC/AC voltage converter. In this paper, two topologies of three-phase direct PWM AC/AC voltage converter are proposed.
Said A. Deraz, Haitham Z. Azazi, Mohamed S. Zaky, Mohamed K. Metwaly, Mohammed E. Dessouki   +4 more
doaj   +1 more source

Symmetrical Components Digital Filters for Microprocessor-Based Protection Input Signals

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2023
In microprocessor protections, measuring bodies are used that react to individual symmetrical components of signals or a combination of them. This makes the corresponding protection devices more sensitive.
F. A. Romaniuk, V. Yu. Rumiantsev, Yu. V. Rumiantsev   +2 more
doaj   +1 more source