Results 21 to 30 of about 20,839 (264)

Simulation of a Power Transformer Differential Protective Relay [PDF]

open access: yesEngineering and Technology Journal, 2009
The aim of this work is to simulate a differential relay, which ensures security for external fault, inrush, and overexcitation conditions and provides dependability for internal faults, to protect a single phase power transformer.
Mohammed S. Abdulraheem   +1 more
doaj   +1 more source

Frequency Transient Suppression in Hybrid Electric Ship Power Systems: A Model Predictive Control Strategy for Converter Control with Energy Storage

open access: yesInventions, 2018
This paper aims to understand how the common phenomenon of fluctuations in propulsion and service load demand contribute to frequency transients in hybrid electric ship power systems.
Viknash Shagar   +2 more
doaj   +1 more source

A measurement system for very fast transients in GIS power substations [PDF]

open access: yesE3S Web of Conferences, 2020
In order to acquire the very fast transients during the disconnector operations in GIS (gas insulated switchgear, GIS) of power substation, a novel measurement system is developed and tested.
Wu Yan   +3 more
doaj   +1 more source

Transformer EMF in differential equations of synchronous generators [PDF]

open access: yesE3S Web of Conferences, 2019
The article presents differential equations of a synchronous generator transformed according to the theory of two reactions, that is, in the axes d-q. We consider the influence of transformer EMF on transients.
Tokarev L.N.
doaj   +1 more source

TRANSIENT ANALYSIS OF WIND DIESEL POWER SYSTEM WITH FLYWHEEL ENERGY STORAGE [PDF]

open access: yesJournal of Engineering Science and Technology, 2017
Wind-Diesel Hybrid power generation is a viable alternative for generating continuous power to isolated power system areas which have inconsistent but potential wind power.
S. SUJITH, V. RAMESH
doaj  

Transient Stability Improvement of the Power Systems

open access: yesIndonesian Journal of Electrical Engineering and Computer Science, 2018
<p>During the last few decades, electrical power demand enlarged significantly whereas power production and transmission expansions has been brutally restricted as a result of restricted resources as well as ecological constrains. Consequently, many transmission lines have been profoundly loading so the stability of power system became as ...
Al-Tameemi   +3 more
openaire   +2 more sources

A Novel Electromagnetic Transient Simulation Method of Large-Scale AC Power System With High Penetrations of DFIG-Based Wind Farms

open access: yesIEEE Access, 2022
With the ever-expanding deployment of renewable energy sources (RESs), the short-time transients have more significant impacts on shaping the characteristics of large power grids.
Yifeng Dong   +6 more
doaj   +1 more source

A novel reliability prediction with input transients for an LLC converter

open access: yesFrontiers in Energy Research, 2022
Utility applications demand highly reliable power converters to match market quality needs. The classical reliability prediction methods do not account for the sudden transients involved with the power converter.
Ramesh B. Darla, Chitra Annamalai
doaj   +1 more source

Combined Approach of PNN and Time-Frequency as the Classifier for Power System Transient Problems [PDF]

open access: yesMehran University Research Journal of Engineering and Technology, 2013
The transients in power system cause serious disturbances in the reliability, safety and economy of the system. The transient signals possess the nonstationary characteristics in which the frequency as well as varying time information is compulsory for ...
Aslam Pervez Memon   +2 more
doaj  

Modeling of grain-oriented Si-steel and amorphous alloy iron core under ferroresonance using Jiles–Atherton hysteresis method

open access: yesAIP Advances, 2018
Amorphous alloy is increasingly widely used in the iron core of power transformer due to its excellent low loss performance. However, its potential harm to the power system is not fully studied during the electromagnetic transients of the transformer ...
Wenxia Sima   +4 more
doaj   +1 more source

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