Results 241 to 250 of about 7,748 (269)

Directional Overcurrent Relaying (67) Concepts

59th Annual Conference for Protective Relay Engineers, 2006., 2006
Directional overcurrent relaying (67) refers to relaying that can use the phase relationship of voltage and current to determine direction to a fault. There are a variety of concepts by which this task is done. This paper will review the mainstream methods by which 67 type directional decisions are made by protective relays.
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Overcurrent Relay

2023
Samir I. Abood, John Fuller
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How to Select Overcurrent Relay Characteristics

IEEE Transactions on Applications and Industry, 1963
One table herein lists induction overcurrent relays, available from the various manufacturers, along with equivalent time versus current characteristics. Another table gives relay types and current ranges suitable for phase and ground protection of 12 of the most commonly encountered industrial plant distribution and motor circuits.
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Automated testing for electromechanical overcurrent relays

7th International Conference on Developments in Power Systems Protection (DPSP 2001), 2001
Despite the advance of numerical technology, electromechanical relays will still be around for a long time. So testing of these relays will remain an issue in the future. There are, however, some special problems when testing electromechanical relays with electronic test sets, commonly summarized under the term power demand.
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Non-conventional Overcurrent Relays Coordination

2019
The Invasive Weed Optimization (IWO) algorithm has been adapted for the high dimension coordination problem. Many utilities follow the criterion of increase use of differential protection in transmission lines which has absolute selectivity with no backup function offered.
Erik Cuevas, Emilio Barocio Espejo, Arturo Conde Enríquez   +2 more
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Directional overcurrent relays

2021
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Effect of non standard characteristics of overcurrent relay on protection coordination and maximizing overcurrent protection level in distribution network

AEJ - Alexandria Engineering Journal, 2022
Abdallah Reda, Mohamed Ibrahim
exaly  

An overcurrent protection relay based on local measurements

2013 IEEE Industry Applications Society Annual Meeting, 2013
Abouzar Rahmati, Reza Adhami
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Highly sensitive microgrid protection using overcurrent relays with a novel relay characteristic

IET Renewable Power Generation, 2020
Mehdi Bagheri, Gevork B Gharehpetian
exaly  

Distance and overcurrent relay coordination

2023
openaire   +1 more source