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Calculating the Inrush Current of Superconducting Transformers [PDF]
Energies, 2021 Under certain circumstances, after connecting a superconducting transformer to the power network, a high value current may flow through its windings. This current can exceed the critical value of the superconductor many times and cause the windings to ...
Grzegorz Komarzyniec
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BLOCKING ALGORITHM FOR CURRENT PROTECTION DURING INRUSH MAGNETIZATION CURRENT
Наука и техника, 2014 The paper presents blocking algorithm for current protection during inrush process. The algorithm is based on the evaluation of the ratio of the positive sequence second harmonic current to the negative sequence first harmonic current.
F. A. Romaniuk, M. S. Loman
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Inductance inrush current time–frequency analysis [PDF]
IET Science, Measurement & Technology, 2020 This study presents an application of the reassigned Gabor time–frequency transform to the inductance inrush current transient analysis. Measurement setup is constructed and the measurement methodology is presented to obtain fully controlled transformer inrush current measurements.
Tin Benšić +3 more
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An aspect of transformer inrush current
Journal of Energy - Energija, 2022 Paper analyzes a sparking phenomena that were observed on power transformers during their first few energizing. Sparks occurred on the flange between tank cover and tank side, in spite of the fact that a jumper (copper link) was used. The phenomenon was observed on transformers from different manufacturers, with various transformer ratings, three or ...
Šulc, Ivan +2 more
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Damping the Inrush Current for Current Transformer [PDF]
Proceedings of the Proceedings of the 1st International Multi-Disciplinary Conference Theme: Sustainable Development and Smart Planning, IMDC-SDSP 2020, Cyperspace, 28-30 June 2020, 2020 The inrush current is a highly asymmetric transient magnetizing current resulting from saturation of the core of the transformer caused by excessive growth of magnetic flux in one direction only. The suggested strategy to damp the inrush current is adding an inductor in parallel with the circuit breaker (C.B., which has a very low resistance when it is
Yousif Alyounus +2 more
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IEEE Access, 2021 When an electromagnetic transient occurs in a transformer, certain parts of the winding will be over stressed internally, which in severe cases will lead to the destruction of the winding insulation.
Chenchen Zhang +3 more
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A Review On Magnetizing Inrush Current. [PDF]
International Journal of Advanced Research, 2018 Magnetizinginrush current is a current which occurs in transformer during switchingon..The main objective is to examine the cause and effects of magnetizing inrush current on transformer. The paper also suggests measures to remedy dangers posed by magnetizing inrush current in transformers.
Zai, Asad +2 more
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Parameter estimation of electric power transformers using Coyote Optimization Algorithm with experimental verification [PDF]
, 2020 In this work, the Coyote Optimization Algorithm (COA) is implemented for estimating the parameters of single and three-phase power transformers. The estimation process is employed on the basis of the manufacturer's operation reports.
Abaza, Amlak +4 more
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Pre-energize Analysis on 3 Phase Transformer by Considering Each Phase Flux
JAREE (Journal on Advanced Research in Electrical Engineering), 2019 Inrush current is a transient phenomenon that occurs when a transformer is first energized to a voltage source at no-load conditions. It causes a very high inrush current.
Hadwim Septiawan
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Control of Magnetizing Inrush Current in a Transformer by Means of Thyristors [PDF]
, 1976 When a transformer is energized, the inrush of abnormally high magnetizing current may be noted for a short time until normal flux conditions are established.
Himei, Toyoji +5 more
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