Results 91 to 100 of about 2,611 (226)
An inrush current model for core type transformers [PDF]
, 1997 A detailed mathematical model based on circuit approach has been developed for simulating inrush current for core type transformers. The model is capable of computing inrush current for various phase connection schemes under different initial conditions.
Farzadfar, Iraj
core
Gong-kuang zidonghua, 2013 Based on using closing resistance to reduce transformer excitation inrush current produced in underloading and no-load, an improved method of in series with capacitor on closing resistance was proposed.
LI Ping, SONG Xiao
doaj
Inrush Current Reduction of Three-Phase Transformers Using Optimal Energization Angle Control
IEEE AccessWhen a transformer is energized, the inrush current can reach several tens of times higher than the steady-state magnetizing current, which may cause maloperation of protective relays, voltage dips and deterioration of power quality.
Jin-Sung Cho +2 more
doaj +1 more source
Iranian Journal of Electrical and Electronic Engineering, 2011 The phenomenon of magnetizing inrush is a transient condition, which occurs primarily when a transformer is energized. The magnitude of inrush current may be as high as ten times or more times of transformer rated current that causes malfunction of ...
M. Jamali, M. Mirzaie, S. A. Gholamian
doaj
Damping of inrush current in superconducting transformer
Przeglad Elektrotechniczny, 2014 In present study we analyze the inrush current in transformers with windings made of high-temperature superconducting materials. We analyze the phenomenon of damping the inrush current in superconducting transformers. Theoretical analysis results are compared with results of measurements of one-phase HTS 8,5 kVA transformer.
Grzegorz, Komarzyniec, Karol, Bednarek
openaire +1 more source
Technique for inrush current modelling of power transformers based on core saturation analysis [PDF]
, 2018 Energising a power transformer may cause inrush current, which misleads the protection systems. Therefore, the inrush current analysis is important in designing and protecting power transformers.
Madani, Seyed M. +3 more
core +1 more source
Diance yu yibiaoThe ultral high voltage direct current (UHVDC) transmission system has a high voltage level and is a mixed AC and DC connection, which makes the coupling relationship between them more closely, so that the converter transformer has different ...
JIN Enshu +4 more
doaj +1 more source
Discrimination Between Inrush and Short Circuit Currents in Differential Protection of Power Transformer Based on Correlation Method Using the Wavelet Transform [PDF]
Iranica Journal of Energy and Environment, 2011 This paper presents a novel technique for transformer differential protection to prevent incorrect operation due to inrush current. The proposed method in this paper is based on time-frequency transform known as the Wavelet transform.
M. Rasoulpoor, M. Banejad, A. Ahmadyfard
doaj
FPGA-Based Smart Sensor to Detect Current Transformer Saturation during Inrush Current Measurement. [PDF]
Sensors (Basel), 2023 Martínez-Figueroa GJ +2 more
europepmc +1 more source
Reduction of magnetizing inrush current in traction transformer [PDF]
, 2008 In 25kv ac main line traction system the traction transformer located in the engine are repeatedly switched off and on during the normal run of the train due to presence of neutral section in the contact wire. The transformer draws inrush current several
Stella Morris +3 more
core +1 more source