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Industrial Cyber-Physical Systems
Optimal relay settings are crucial to guarantee fast fault clearance in the shortest possible operation time with optimal relay coordination. Traditional optimization techniques, namely LP and NLP, have slow convergence, difficulty in constraints ...
Ravindra Mankar, P. Darji
semanticscholar +1 more source
Optimal relay settings are crucial to guarantee fast fault clearance in the shortest possible operation time with optimal relay coordination. Traditional optimization techniques, namely LP and NLP, have slow convergence, difficulty in constraints ...
Ravindra Mankar, P. Darji
semanticscholar +1 more source
Optimal Coordination of Directional Overcurrent Relay Using Coyote optimization Algorithm
IEEE International Conference on Automatica, 2022Power systems have protection devices whose job it is to quickly isolate any faults that occur in the protected zone from the remainder of the zone that is in decent health.
A. Selim +3 more
semanticscholar +1 more source
2021 National Power Electronics Conference (NPEC), 2021
The integration of distributed generations (DGs) in the microgrids creates numerous diificulties to the present protection schemes. The magnitude and direction of fault current changes significantly in a microgrid upon DG allocation, that may lead to ...
Suman Biswal, S. Samantaray
semanticscholar +1 more source
The integration of distributed generations (DGs) in the microgrids creates numerous diificulties to the present protection schemes. The magnitude and direction of fault current changes significantly in a microgrid upon DG allocation, that may lead to ...
Suman Biswal, S. Samantaray
semanticscholar +1 more source
Neural Computing and Applications, 2019
This paper proposes an enhanced version of grey wolf optimizer (EGWO) to solve the coordination problem of directional overcurrent relays (DOCRs). The EGWO is proposed to improve the convergence characteristics and computation time of the conventional grey wolf optimizer (GWO) by selecting a suitable balance between exploration and exploitation phases.
Salah Kamel +3 more
openaire +1 more source
This paper proposes an enhanced version of grey wolf optimizer (EGWO) to solve the coordination problem of directional overcurrent relays (DOCRs). The EGWO is proposed to improve the convergence characteristics and computation time of the conventional grey wolf optimizer (GWO) by selecting a suitable balance between exploration and exploitation phases.
Salah Kamel +3 more
openaire +1 more source
Optimal Directional Overcurrent Relays Coordination using Directional Bat Algorithm
2019 IEEE PES Innovative Smart Grid Technologies Conference - Latin America (ISGT Latin America), 2019Coordination of directional overcurrent relays is most often made based on manual procedures. However, due to its complexity and time-consuming, these procedures have been formulated as an optimization problem. The aim of this paper is to present a directional Bat Algorithm (dBA) as a potential algorithm for optimal coordination of directional ...
Felipe C. Sampaio +5 more
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Optimal coordination of microprocessor based directional overcurrent relays
2008 Canadian Conference on Electrical and Computer Engineering, 2008The paper presents a new problem formulation for coordinating microprocessor based directional overcurrent relays in an interconnected power system. Unlike previous formulations, the proposed problem formulation takes into account the discrete nature of pickup current settings and the available time-current characteristics of the relay.
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Protection coordination of directional overcurrent relays considering fault current direction
IEEE PES Innovative Smart Grid Technologies, Europe, 2014Directional inverse time overcurrent relays are used in protection systems of meshed networks to operate for fault currents in its forward zone of operation. They are used for primary and backup protection and their operation needs to be coordinated to assure selectivity.
Hebatallah Mohamed Sharaf +3 more
openaire +1 more source
Optimal coordination of directional overcurrent relays considering definite time backup relaying
IEEE Transactions on Power Delivery, 1999A methodology is presented for the consideration of definite-time backup relays in the optimal coordination of directional overcurrent relays using linear programming. It is shown that the influence of considering second-zone distance relays and breaker failure relays impose important requirements for the determination of the time dial settings of ...
L.G. Perez, A.J. Urdaneta
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2026 4th Odisha International Conference on Electrical Power Engineering, Communication and Computing Technology (ODICON)
The primary goal of relay coordination is to determine the optimal relay configurations that minimize total operating time while ensuring proper coordination between each relay pair.
Raghvendra Tiwari +5 more
semanticscholar +1 more source
The primary goal of relay coordination is to determine the optimal relay configurations that minimize total operating time while ensuring proper coordination between each relay pair.
Raghvendra Tiwari +5 more
semanticscholar +1 more source
Optimization of Directional Overcurrent Relay Coordination using Metaheuristic Coronavirus Technique
2024 6th International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)This paper employs the Coronavirus Herd Immunity Optimizer (CHIO), a recently proposed optimizer that incorporates multi-population evolution in the search mechanism, to study the problem of directional overcurrent relays (DOCR).
Aya Mounir +3 more
semanticscholar +1 more source