Results 1 to 10 of about 82,174 (302)
Improving the Protection of Step-Down Transformers by Utilizing Percentage Differential Protection and Scale-Dependent Intrinsic Entropy [PDF]
EntropyTransformer operations are susceptible to both internal and external faults. This study primarily employed software to construct a power system simulation model featuring a step-down transformer.
Chia-Wei Huang +4 more
doaj +2 more sources
An enhanced protection scheme for power transformers integrating alpha plane analysis [PDF]
Scientific ReportsPower transformers play a critical role in electric power systems by facilitating connections between subsystems with different voltage levels. Ensuring their reliable operation and protection against faults is essential for maintaining network stability.
Ahmed S. Sayed +4 more
doaj +2 more sources
Power transformer protection by using Fuzzy Logic [PDF]
Iraqi Journal for Electrical and Electronic Engineering, 2009 Power transformer protective relay should block the tripping during magnetizing inrush and rapidly operate the tripping during internal faults. Recently, the frequency environment of power system has been made more complicated and the quantity of 2nd ...
A. Aziz +2 more
doaj +2 more sources
Digital protection scheme based on Durbin Watson and Pearson similarity indices for current signals practically applied to power transformers [PDF]
Scientific ReportsElectrical faults can change the power quality parameters of power systems. A numerical protection technique for fault detection and imbalance assessment based the Durbin-Watson (DW) factors for three phase currents is proposed in this paper.
R. A. Mahmoud
doaj +2 more sources
Microprocessor Protection of Power Reducing Transformers
Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2011 The paper contains analysis of advantages and disadvantages of existing differential protection terminals of power reducing transformers. The paper shows that there are good reasons to develop microprocessor protection of power reducing transformer which
F. A. Romanuk +2 more
doaj +1 more source
Energies, 2021 In this paper, the authors have developed a hardware model for blocking even and odd harmonics of a power transformer. In the proposed hardware model, intelligent differential & over-current relays are used for the blocking of harmonics of a power ...
Abdul Azeem +4 more
doaj +1 more source
Frontiers in Energy Research, 2023 The low voltage ride-through (LVRT) requirements demand large-scale photovoltaic (PV) power generation system remain connected to the grid during faults. It results in considerable impact on the characteristics of fault current.
Guosheng Yang +5 more
doaj +1 more source
Energies, 2022 Differential protection normally detects short circuits and ground faults in the windings of a power transformer and its terminals. Inter-turn faults refer to flashovers among the electrodes that arise only in a similar type of physical winding.
Muhammad Sheryar +6 more
doaj +1 more source
Energies, 2021 Complex phase shifting transformer protection scheme and complexity of the object itself created a need to use simulation programs for their analysis.
Tomasz Bednarczyk +4 more
doaj +1 more source
Identification of interturn faults in power transformers by means of generalized symmetrical components analysis [PDF]
E3S Web of Conferences, 2019 The paper deals with experimental identification of transformer internal faults, an important factor in reliability and sustainability of power supply systems. Task of identification of transformer internal faults requires increasing sensitivity of relay
Ivanchenko Daniil, Smirnov Artem
doaj +1 more source