Results 31 to 40 of about 10,773 (195)

Novel rule base development from IED-resident big data for protective relay analysis expert system [PDF]

open access: yes, 2016
Many Expert Systems for intelligent electronic device (IED) performance analyses suchvas those for protective relays have been developed to ascertain operations, maximize availability, and subsequently minimize misoperation risks.
Ananthapadmanabha, Thammaiah   +5 more
core   +1 more source

Study on Reliability of PACSs with Integrated Consideration of Both Basic and Mission Reliability

open access: yesEnergies
Protective relays play a fundamental role in power systems, whose functions consist of three parts, namely protection, automation, and control, thus called the PAC altogether.
Xinzhi Chen, Long Jin
doaj   +1 more source

Adaptive overcurrent relay (AOCR) based on Fano Factors of current signals

open access: yesThe Journal of Engineering, 2023
A Fano Factor‐based adaptive overcurrent protection scheme, that automatically adjusts the protection settings in response to the prevailing conditions of the power system, is presented.
Ragab Abdallah Mahmoud, Om Parkash Malik
doaj   +1 more source

A Ground Protective Relay Method U sing Line Voltage. [PDF]

open access: yes, 1971
This article explains that recent ground protective relay method,using zerophase- sequence current transformer, has a possibility that it makes mulfunctions, because underground lines are adopted as high tention voltage distribution lines.
斉藤, 清吉   +3 more
core   +1 more source

A New Model of Numerical MHO Distance Relay Associated with Power Swing Detector

open access: yesAlgerian Journal of Signals and Systems, 2016
In conventional transmission line protection, a distance relay is used to provide the primary as well as backup protection. The voltage and current phasors measurement needed by the distance relay for determining the impedance may be affected by the ...
Ayache MATI   +2 more
doaj   +1 more source

Design of CORDIC-based Digital Protective Relay [PDF]

open access: yes, 2013
Protective relays are used to show the current status of a given power system. It is used to determine whether parameters like voltage or current violate any trip or reset specification or condition.
Nayak, Stutee, Swain, Manisha
core  

Field-Programmable Gate Array Based Tester for Protective Relay

open access: yes, 2017
The reliability of the power grid depends on the successful operation of thousands of protective relays. The failure of one relay to operate as intended may lead the entire power grid to blackout.
A. Zitouni, H. Bentarzi
core   +1 more source

Suggestion of a New Protection Scheme for a Transmission System Equipped with a Thyristor-Controlled Series Capacitor

open access: yesEnergies, 2019
A thyristor-controlled series capacitor (TCSC) is employed to a transmission line in order to enhance the usable capacity of the present as well as upgraded lines, improve system stability, reduce losses, and improve power flow control capability ...
Minh-Chau Dinh   +6 more
doaj   +1 more source

Reliability of microprocessor-based relay protection devices: Myths and reality [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2009
The article examines four basic theses about the ostensibly extremely high reliability of microprocessor-based relay protection (MP) touted by supporters of MP. Through detailed analysis based on many references it is shown that the basis of these theses
Gurevich Vladimir
doaj   +1 more source

Desempenho da proteção diferencial em transformadores de potência perante condições especiais de operação [PDF]

open access: yes, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia ElétricaRelés digitais vêm gradualmente substituindo os relés eletromecânicos porque são mais sensíveis, mais flexíveis e várias ...
Verney, Luiz Henrique Costa de
core  

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