Results 211 to 220 of about 207,280 (252)

ANN based directional overcurrent relay

2001 IEEE/PES Transmission and Distribution Conference and Exposition. Developing New Perspectives (Cat. No.01CH37294), 2002
This paper describes the design and development of an ANN based novel directional overcurrent relay. A multi-layer feedforward neural network (FFNN) trained with the error backpropagation algorithm has been developed to realize this relay. The ANN based algorithm is off line tested using different simulation equations for overcurrent and voltage under ...
D.N. Vishwakarma, Z. Moravej
openaire   +1 more source

A new one-cycle directional overcurrent relay

Electrical Engineering, 1943
This paper describes a new one-cycle directional overcurrent relay which is not limited in its application by lack of contact co-ordination. That contact coordination is important is indicated by the many incorrect relay operations which have been traced to the common practice of adding instantaneous attachment to directional overcurrent relays.
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Overcurrent relay coordination by evolutionary programming

Electric Power Systems Research, 2000
Abstract This paper presents a novel optimization technique based on evolutionary programming for overcurrent (OC) relay coordination in ring fed distribution networks. Since the problem has multi-optimum points, ordinary mathematical based optimization techniques will fail.
C.W. So, K.K. Li
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Impact of Microgrid Operation on the Performance of Overcurrent Relay Coordination and Assessment of Differential Relay Coordination

, 2020
Penetration of distributed generations (DGs) enable microgrid to operate in different mode such as grid-connected and islanded mode with radial and mesh topology.
Susmita Kar, S. Samantaray
semanticscholar   +1 more source

Overcurrent relays coordination for commercial building

2013 IEEE 7th International Power Engineering and Optimization Conference (PEOCO), 2013
This paper presents an overcurrent relays coordination study for an 11 kV commercial building in southern Malaysia. Nevertheless, the actual study that covers the overcurrent relays, earth fault relays and earth leakage relays were executed by providing optimum and functionable relay settings prior to commissioning of the building.
O. Aliman, I. Musirin
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Overcurrent relay optimization in a radial distribution network considering different fault locations

Electrical Engineering, 2023
M. Rojnić, Rene Prenc, D. Topić, N. Saulig   +3 more
semanticscholar   +1 more source

Overcurrent Relay

2023
Samir I. Abood, John Fuller
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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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Innovative Adaptive Protection Approach to Maximize the Security and Performance of Phase/Earth Overcurrent Relay for Microgrid Considering Earth Fault Scenarios.

Electric power systems research, 2022
N. El-Naily, S. Saad, Abdelsalam M A Elhaffar, Eyad Zarour, Feras Alasali   +4 more
semanticscholar   +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.
openaire   +1 more source