Results 101 to 110 of about 2,611 (226)
Voltage Control by Microcontroller to Reduce Transformer Inrush Current [PDF]
, 2014 .When a transformer is energized by the supply voltage, a high current called transientinrush current which it may raise to ten times of the transformer full load current could be drawn by the primary winding.This paper discusses a microcontroller ...
Ali Asghar, Fathollahi Fard
core
A New Current-Based Technique for Discrimination between Internal Faults and Inrush Current within Power Transformers [PDF]
, 2015 Inrush current may lead to a false operation of the power transformer differential protection relay. Hence, it is very essential to distinguish inrush current from various internal transformer faults in order to improve the reliability of the ...
Abu-Siada, Ahmed +3 more
core
The impact of capacitor bank inrush current on field emission current in vacuum [PDF]
, 2010 Field emission current measurements during the recovery voltage are investigated to understand the origin of restrikes in vacuum interrupters in case of the interruption of capacitive loads. Measurement and analysis of very small field emission currents (
Koochack Zadeh, M. +13 more
core +1 more source
Research of a New Criterion of Main Protection of Transformer
Gong-kuang zidonghua, 2012 In view of problems that traditional main protection of transformer cannot identify inrush current and internal fault current of transformer, the paper proposed a new criterion of main protection of transformer based on dead angle of differential current.
HE Ren-wang +3 more
doaj
A Method for Identification of Transformer Inrush Current Based on Box Dimension [PDF]
, 2017 Magnetizing inrush current can lead to the maloperation of transformer differential protection. To overcome such an issue, a method is proposed to distinguish inrush current from inner fault current based on box dimension.
Ran Zheng +4 more
core +1 more source
Design and Evaluation of a DSP Based Differential Relay of Power Transformer
Algerian Journal of Signals and Systems, 2016 The problem of mal operation of differential protection of power transformer due to the inrush magnetizing current has long considered as a challenging problem.
Abdelkader ABDELMOUMENE +2 more
doaj +1 more source
Investigation of Inrush Current in Nickel Microfuses
IOP Conference Series: Materials Science and Engineering, 2017 This paper presents investigation of inrush current in nickel microfuses using microelectromechanical systems technology with high-aspect-ratio micromachining technology by x-ray lithography technique. The nickel microfuses were designed by the tether and saw-tooth pattern and studied the melting time, maximum melting current, maximum voltage and ...
Ch Ketthanom, R Phattanakun
openaire +1 more source
Novel Techniques to Reduce Transformer Inrush Current Using EMTP Software
مهندسی مخابرات جنوبTransformer inrush current is a high-amplitude, non-sinusoidal transient that occurs during initial energization, leading to voltage dips, power quality degradation, and relay misoperations.
Amir Ghaedi +2 more
doaj
Chengshi guidao jiaotong yanjiu[Objective] In water-rich rock stratum regions, preventing confined aquifer inrush accidents is a key focus and challenge in the design and construction of deep foundation pit projects.
Xiao YU +6 more
doaj +1 more source
Transformer differential protection with wavelet transform and difference function
Engineering Science and Technology, an International JournalThe Transformer Differential Protection (TDP) algorithm instantly compares the target transformer’s terminal currents for each phase. The differential current is not expected to appear during regular operation.
Merve Oztekin +2 more
doaj +1 more source