Results 91 to 100 of about 7,136,886 (221)
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
Reduction of magnetizing inrush current in a delta connected transformer
, 2008 Magnetizing inrush current in power transformer creates severe power quality problems. Energization of the transformer from the delta side of a delta-star transformer does not allow the control of neutral resistor at the time of switching the supply for ...
Ali Asghar +3 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
Energizing the power transformers usually results in flowing very high inrush currents. This harmful current can be minimized using controlled switching and considering the value of residual flux.
Ghaderi, Mohammad Ali +2 more
core
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
Demagnetization Method for Reducing Inrush Current of Single Phase 1 kVA Transformer
JAREE (Journal on Advanced Research in Electrical Engineering), 2017 This study deals with an effort to reduce inrush current of single phase transformer during its energizing. Inrush current affected by residual flux was minimized using demagnetization method in order to reduce residual flux trapped in the core of ...
I Made Yulistya Negara +7 more
doaj
EnergiesInduction motor starting often causes voltage fluctuations due to high inrush current, which can impact system stability and power quality. To address this, smart inverters with power control functions and superconducting fault current limiters (SFCLs ...
Seung-Su Choi +2 more
doaj +1 more source
Computer simulation of transformer magnetizing inrush current / Saadiah Mohd Said
, 2002 Inrush currents in transformers, which are resulted from system transient, are difficult to observe and analyze. Measurements of this inrush current offer important data for power system operation and protection.
Mohd Said, Saadiah
core