Results 21 to 30 of about 1,041,598 (189)
Journal of Modern Power Systems and Clean Energy, 2021 The optimal setting of directional overcurrent relays (DOCRs) ensures the fault detection and clearing in the minimum possible operation time. Directional protective relaying is carried out to coordinate relay settings in a meshed network in the presence
Pegah Alaee, Turaj Amraee
doaj +1 more source
Comprehensive Performance Analysis of Greywolf Optimizer for Overcurrent Relay Coordination [PDF]
, 2022 <p>In power systems, the practice of overcurrent protection is more economical and common than the distance protection practice. In addition, overcurrent protection is used in the majority of distribution networks. This makes it necessary to design
Atsever, Mert Bekir +1 more
core +3 more sources
New Overcurrent Relay Coordination Method Through Time Intervals to Enhance Microgrid Protection
IEEE Access, 2021 This paper presents a method to protect microgrids (MGs) through coordination of directional overcurrent relays (DOCRs). The new formulation is subjected to restrictions of pre-established time intervals to guarantee the primary and backup functions of ...
Yendry Gonzalez, Arturo Conde
doaj +1 more source
Journal of Electrical and Computer Engineering, 2020 The flexible operation of microgrids, along with the availability of distributed generation (DG) units, causes a variety of changes in short-circuit current levels, magnitudes, and directions, which has undesirable effects on the operation of protection ...
Panida Thararak, Peerapol Jirapong
doaj +1 more source
An Adaptive Overcurrent Coordination Scheme Withstanding Active Network Operations
IEEE Access, 2022 This paper aims to present a centralized adaptive protection scheme (APS) for the directional overcurrent relays (DOCRs) considering system dynamics such as load demand variations, topology changes and DGs to mitigate the above-mentioned effects.
Arturo Conde, Meng Yen Shih
doaj +1 more source
Hybridization of PSO for the Optimal Coordination of Directional Overcurrent Protection Relays [PDF]
Electronics, 2022 In the electrical power system, the coordination of directional overcurrent protection relays (DOPR) plays a preeminent role in protecting the electrical power system with the help of primary and back up protection to keep the system vigorous and to avoid unnecessary interruption. The coordination between these relays should be pursued at optimal value
Kashif Habib +5 more
openaire +1 more source
Hybrid mixed-integer non-linear programming approach for directional over-current relay coordination
The Journal of Engineering, 2019 This article proposes the optimal coordination problem of protective relays within a hybrid optimisation framework which is presented based on integer coded genetic algorithm (ICGA) and non-linear programming (NLP).
Mohammad Sadegh Javadi +4 more
doaj +1 more source
Protection coordination of directional over current relay with distributed generation [PDF]
, 2022 The present study is focussed on a comparative analysis of different metaheuristic optimization approaches for directional overcurrent relay (DOCRs) coordination which has been discussed and presented in the literature.
Kumar, Vikash +6 more
core +1 more source
Optimal Overcurrent Relay Coordination: A Review [PDF]
, 2013 This paper presents an overview on optimal overcurrent relay coordination in protection system and protective relays. Efforts have been made to include all methods used for the coordination of overcurrent relays.
Hussain, M.H. +2 more
core +3 more sources
Coordination of directional overcurrent relays using a novel method to select their settings
IET Generation, Transmission & Distribution, 2011 This study presents a new method to select the settings of directional overcurrent relays. First, a new selection criterion of pickup currents is adopted. It results in discrete pickup current values, which mitigate the selectivity constraints effect on the minimisation of time multiplier settings.
Ezzeddine, Mazhar +2 more
openaire +2 more sources