Results 121 to 130 of about 9,639,269 (244)

Stability Study of Confined Aquifer Foundation Pit Bottom Plate Inrush Based on Nonlinear Failure Criterion

open access: yesChengshi 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

open access: yesEngineering Science and Technology, an International Journal
The 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

open access: yesJAREE (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  

A parametric study of motor starting for a 2- to 10-kilowatt Brayton power system [PDF]

open access: yes
A study of the motor starting of a Brayton cycle power system was conducted to provide estimates of system sensitivity to several controllable parameters.
Cantoni, D. A.
core   +1 more source

Unified Algorithm Based on Rotating Phasors for Accurate Detection of Inrush Currents in Three-Phase Transformers

open access: yesIEEE Access
The detection of inrush currents is vital for transformer differential protection. The mainstream method for detecting inrush current is based on the second harmonic content of the differential current.
Jimin Chai, Shuyan Pan
doaj   +1 more source

Common approach to solving SGEMP, DEMP, and ESD survivability [PDF]

open access: yes, 1977
System Generated Electromagnetic Pulse (SGEMP) and Dispersed Electromagnetic Pulse DEMP) are nuclear generated spacecraft environments. Electrostatic discharge (ESD) is a natural spacecraft environment resulting from differential charging in magnetic ...
Ling, D.
core   +1 more source

Mitigation of Remanence Flux in Power Transformers using Predetermined Method of De-Energization [PDF]

open access: yes
Title from PDF of title page viewed October 30, 2017Thesis advisor: Preetham GoliVitaIncludes bibliographical references (pages 37-39)Thesis (M.S)--School of Computing and Engineering.
Charlapally, Akhila
core  

A Study on Excitation Inrush Current and Overvoltage Mitigation Strategies Utilizing Phase Selection Control

open access: yesEnergies
To address the challenges of system failures and equipment damage caused by excitation inrush currents and overvoltages during no-load energization of high-speed locomotive transformers, a simulation model was developed utilizing PSCAD electromagnetic ...
Junting Yan   +3 more
doaj   +1 more source

Research on optimization strategy of differential protection for inrush current in converter transformer considering magnetic flux restraint

open access: yesAIP Advances
The converter transformer is a critical component of the HVDC transmission system and its operational stability is essential for the overall safety of the power grid.
Ran Deng   +5 more
doaj   +1 more source

Prediction of the Transformer Inrush Current Forces

open access: yesStrojarstvo : časopis za teoriju i praksu u strojarstvu, 2010
When a power transformer is switched to power supply there is a transient inrush of current in each of the transformer phases. Its peak value mainly depends on the resistance of the primary winding, the point on the voltage wave at the instant of switching the transformer on, and the residual magnetic flux of the transformer.
Šušnjić, Livio   +2 more
openaire   +2 more sources

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