Results 21 to 30 of about 10,045 (225)

Analysis of the residual flux influence on inrush current and electromagnetic force in large power transformer

open access: yesThe Journal of Engineering, 2019
The power transformer is the major electrical equipment in the power system and should be able to resist the damage that caused by the abnormal conditions, like the influence of the inrush current and the electromagnetic force. However, the residual flux,
Wenqi Ge, Jianhai Zhao, Youhua Wang
doaj   +1 more source

Systematization of the Simulation Process of Transformer Inrush Current Using EMTP

open access: yesApplied Sciences, 2019
An inrush current is generated when a transformer is energized. This current has a large magnitude and rich harmonics, thereby causing mal-operation of the protection relay.
Hun-Chul Seo, Gi-Hyeon Gwon
doaj   +1 more source

Properties of concrete containing recycled PET bottles as sand replacement [PDF]

open access: yes, 2020
The modern lifestyle along with the new technologies have contributed the increasing of waste materials production. Plastic is one of the waste materials which is non-disposal and non-biodegradable material that can remain on earth without degradation ...
Abdul Awal, A.S.M   +2 more
core  

Solid-State Inrush Current Limiter Controller Based on Inrush Prediction for Large Transformers

open access: yesCoRR, 2020
Inrush current problems of the industrial transformers are occasionally more serious than the utility transformers. A new Solid-State Inrush Current Limiter (SSICL) is proposed for medium voltage power transformers. The SSICL consists of three similar sets.
Nima Tashakor   +4 more
openaire   +2 more sources

Power transformers behavior under the occurrence of inrush currents and turn-to-turn winding insulation faults [PDF]

open access: yes, 2014
This paper intends to provide a detailed characterization of the transformer behavior under the influence of inrush currents and/or incipient winding faults. Experimental and simulation results are presented and discussed. Finally, a promising new method
Cardoso, A. J. Marques   +1 more
core   +1 more source

A New method for winding connected to the ground internal fault localization in the transformer using the extended Kalman Filter

open access: yesFranklin Open
Inrush current in the transformer may assume as fault current for the protective equipment. Thus, it is important to distinguish the inrush current from the internal fault current in the transformer.
Mohammad Ali Taghikhani   +1 more
doaj   +1 more source

Inrush Current Management During Medium Voltage Microgrid Black Start With Battery Energy Storage System

open access: yesIEEE Access, 2022
This paper addresses the black start of medium voltage distribution networks (MV-DNs) by a battery energy storage system (BESS). The BESS consists of a two-level voltage source inverter interfacing MV-DN which has limited overcurrent capability.
Mahdi Shahparasti   +5 more
doaj   +1 more source

Application of saturated core transformer as inrush current limiter

open access: yese-Prime: Advances in Electrical Engineering, Electronics and Energy
An inrush current is a transient current that results from a sudden change in the exciting voltage across a transformer's windings. Reducing the inrush current of transformers is desirable due to mechanical stresses and negligent operation of protective ...
Mehrdad Tarafdar-Hagh   +5 more
doaj   +1 more source

Commutation failure suppression strategy of hybrid DC transmission based on active current limiting

open access: yes电力工程技术, 2022
Aiming at the problem of large inrush current when the commutation fails in the hybrid direct current (DC) transmission system,the relationship between the inrush current amplitude and the voltage source converter (VSC) is firstly derived.
MA Wenzhong   +5 more
doaj   +1 more source

DC fault isolation study of bidirectional dual active bridge DC/DC converter for DC transmission grid application [PDF]

open access: yes, 2015
Fast isolation and detection of DC faults is currently a limiting factor in high power DC transmission grid development. Recent research has shown that the role of DC/DC converters is becoming increasingly important in solving various DC grid challenges ...
Aboushady, Ahmed A.   +2 more
core   +2 more sources

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