Results 171 to 180 of about 99,550 (205)

Microcomputer-based multiple overcurrent relays

Computers in Industry, 1993
Abstract This paper presents an application of the most recent modern technology to implement overcurrent relaying functions in a power system. A microprocessor-based single and multiple overcurrent relays have been reported. In this work it is shown that a microcomputer in conjunction with an interface board can be economically used to develop a ...
Faisal Fadul, Monir Ahmad
openaire   +1 more source

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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Design of a microprocessor-based overcurrent relay

[Proceedings] WESCANEX '91, 2002
The authors describe the design of a microprocessor-based overcurrent relay that is suitable for protecting distribution and subtransmission networks. A modified technique for modeling the time-current characteristics is described. The proposed design is implemented using a Texas Instruments TMS320C25 digital signal processor.
T.S. Sidhu, M.S. Sachdev, H.C. Wood
openaire   +1 more source

Designing of Numerical Directional Overcurrent Relay

2018 International Conference on Smart Electric Drives and Power System (ICSEDPS), 2018
This paper gives an insight into designing of numerical directional over-current relay for distribution system using real time signals. For fault detection differential sampling method is used. Real time signals are converted in discrete form using an advanced analog to digital conversion device Advantech USB 4711/A.
Rupal Agarwal, T. G. Arora, Rajeshri Tiwari   +2 more
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Directional Overcurrent Relaying (67) Concepts

2006 IEEE Rural Electric Power Conference, 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 reviews the mainstream methods by which 67 type directional decisions are made by protective relays.
J. Horak, W. Babic
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Overcurrent Relay

2023
Samir I. Abood, John Fuller
openaire   +1 more source

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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Directional overcurrent relays

2021
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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  

An overcurrent protection relay based on local measurements

2013 IEEE Industry Applications Society Annual Meeting, 2013
Abouzar Rahmati, Reza Adhami
openaire   +1 more source