Results 21 to 30 of about 719,011 (231)

Robust MMSE Precoding Strategy for Multiuser MIMO Relay Systems with Switched Relaying and Side Information [PDF]

open access: yes, 2013
In this work, we propose a minimum mean squared error (MMSE) robust base station (BS) precoding strategy based on switched relaying (SR) processing and limited transmission of side information for interference suppression in the downlink of multiuser ...
Yang, Lie-Liang   +3 more
core   +2 more sources

A multi-agent based protection in distribution networks including distributed generations

open access: yesEnergy Reports, 2022
This paper proposes a strategy for protection coordination in distribution networks with DGs penetration. The main objective of the present work is to employ the potential of Multi-Agent Systems (MASs), which have recently been given considerable ...
E. Abbaspour   +3 more
doaj   +1 more source

Line Protection Operate Time: How Fast Shall It Be?

open access: yesIEEE Access, 2021
An ultra-high-speed protective relay has been an important topic within the scientific community, and specifically within the power industry, for decades.
Sinisa Zubic, Zoran Gajic, Davor Kralj
doaj   +1 more source

Achieving full diversity in multi-antenna two-way relay networks via symbol-based physical-layer network coding [PDF]

open access: yes, 2013
This paper considers physical-layer network coding (PNC) with M-ary phase-shift keying (MPSK) modulation in two-way relay channel (TWRC). A low complexity detection technique, termed symbol-based PNC (SPNC), is proposed for the relay.
Lv, Tiejun   +4 more
core   +1 more source

Application of evolutionary algorithms for optimal directional overcurrent relay coordination [PDF]

open access: yes, 2014
Includes bibliographical references.Relay coordination is necessary to ensure that while protection relays operate as fast as possible, they are also able to isolate only the faulted parts of the system from the network, ensuring that a power system ...
Stenane, Ndabeni Moses
core   +1 more source

An Intelligent and Time Adaptive Model for Symmetrical and Asymmetrical Faults during Power Swing [PDF]

open access: yesمجله مدل سازی در مهندسی, 2020
The unwanted operation of the distance relay during the power swing conditions can lead to increased disturbances and exacerbate of the power grid. Therefore, the rapid and accurate detection of the power swing and blocking of the distance relay after a ...
Mostafa Sarlak, Hassan Saeedi
doaj   +1 more source

Мікропроцесорні пристрої релейного захисту: сьогодення й майбутнє

open access: yesElektrotehnìka ta Elektroenergetika, 2010
Устатті представлений аналіз основних конструктивних недоліків сучасних мікропроцесорних пристроїв релейного захисту (MПРЗ) і пропонуються основні принципи побудови MПРЗ, якіможуть використовуватися при створеннінових пристроїв.
V. I. Gurevich
doaj   +1 more source

Power transformer protection by using Fuzzy Logic [PDF]

open access: yesIraqi Journal for Electrical and Electronic Engineering, 2009
Power transformer protective relay should block the tripping during magnetizing inrush and rapidly operate the tripping during internal faults. Recently, the frequency environment of power system has been made more complicated and the quantity of 2nd ...
A. Aziz   +2 more
doaj  

Susceptibility of modern relay protection: Will protection from cyber attacks help? [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2014
Modern trends in relay protection (RP) based on the substitution of electromechanical protection relays (EMPR) by digital protective relays (DPR) have resulted in the emergence of an absolutely new problem, which was not known before.
Gurevich Vladimir
doaj   +1 more source

Adaptive undervoltage protection scheme for safety bus in nuclear power plants

open access: yesNuclear Engineering and Technology, 2022
In the event of a short-circuit accident on a 4.16 kV non-safety bus, the voltage is temporarily lowered as backflow occurs on the safety bus. In such cases, the undervoltage relay of the safety bus shall not pick up the undervoltage so as not to ...
Choong-koo Chang
doaj   +1 more source

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