Results 21 to 30 of about 2,378 (215)
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
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
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System configuration, fault detection, location, isolation and restoration: a review on LVDC Microgrid protections [PDF]
, 2019 Low voltage direct current (LVDC) distribution has gained the significant interest of research due to the advancements in power conversion technologies. However, the use of converters has given rise to several technical issues regarding their protections
Bououden +11 more
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Assessing the reliability of adaptive power system protection schemes [PDF]
, 2012 Adaptive power system protection can be used to improve the performance of existing protection schemes under certain network conditions. However, their deployment in the field is impeded by their perceived inferior reliability compared to existing ...
Abdulhadi, Ibrahim Faiek +3 more
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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
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Energies, 2023 Much attention has been paid to the optimized protection of microgrids (MGs) and active distribution networks (ADNs). However, the literature shows a research gap in proposing a hybrid scheme, utilizing the voltage-based and overcurrent-based relays ...
Ali Vafadar +3 more
doaj +1 more source
Standardization of power system protection settings using IEC 61850 for improved interoperability [PDF]
, 2013 One of the potential benefits of smart grid development is that data becomes more open and available for use by multiple applications. Many existing protection relays use proprietary formats for storing protection settings.
Blair, Steven Macpherson +5 more
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Adaptive directional overcurrent relaying scheme for meshed distribution networks [PDF]
IET Generation, Transmission & Distribution, 2018 Distribution networks are evolving into active meshed networks with bidirectional power flow as the penetration of distributed generation (DG) sources is increasing. This necessitates the use of directional relaying schemes in these emerging active distribution networks. However, conventional directional overcurrent (OC) protection will not be adequate
Dhivya Sampath Kumar +3 more
openaire +2 more sources
Energies, 2020 This paper introduces a new protection system for solar photovoltaic generator (SPVG)-connected networks. The system is a combination of voltage-restrained overcurrent relays (VROCRs) and directional overcurrent relays (DOCRs).
Vipul N. Rajput +3 more
doaj +1 more source
Artificial neural network application in coordination of directional overcurrent protective relays in electrical mesh distribution network [PDF]
, 2015 Directional Overcurrent relays (DOCR) applications in meshed distribution network (MDN) eliminate short circuit fault current flow due to the system topological structure.
Emmanuel, Osaji +3 more
core +1 more source