Results 1 to 10 of about 6,329 (205)
Optimal Coordination of Directional Overcurrent Relays Using PSO-TVAC Considering Series Compensation [PDF]
Advances in Electrical and Electronic Engineering, 2015 The integration of system compensation such as Series Compensator (SC) into the transmission line makes the coordination of directional overcurrent in a practical power system important and complex.
Nabil Mancer +2 more
doaj +4 more sources
On the Development of Overcurrent Relay Optimization Problem for Active Distribution Networks
Energies, 2022 The goal of this review paper will be to address complex optimization functions in the area of overcurrent relay optimization, to inspect and valorize their objectives and to critically examine their application in real distribution networks.
René Prenc +2 more
exaly +3 more sources
IEEE Access, 2022 Distribution systems continue to grow and becoming more complex with increasing operational challenges such as protection miscoordination. Initially, conventional methods were favoured to solve overcurrent relay coordination problems; however, the ...
Sethembiso Nonjabulo Langazane +1 more
exaly +3 more sources
Time overcurrent adaptive relay
International Journal of Electrical Power and Energy Systems, 2003 In this paper we recommend an inverse time overcurrent adaptive relay. This adaptive relay has a greater sensitivity and reduced operating times using only the information available at the relay's site. We herein describe the functional structure of the overcurrent adaptive relay, its implementation and the results obtained in laboratory tests with ...
Arturo Conde Enrı́quez +2 more
exaly +2 more sources
Comparative optimization of overcurrent relay coordination in DG-integrated distribution networks: water cycle algorithm versus genetic algorithm and big bang–big crunch [PDF]
Scientific ReportsThe increasing penetration of distributed generation (DG) has significantly complicated protection coordination in modern distribution networks by introducing bidirectional power flows and variable fault current levels.
Reda E. Mohamed +2 more
doaj +2 more sources
Jurnal Nasional Teknik Elektro, 2019 The inevitable replacement of electro-mechanical protection relays with more recently-developed microprocessor-based protection relays poses challenges to engineer, one of which is migration from existing manufacturer’s non-standard inverse time ...
Bagus Brahmantya Gautama
doaj +2 more sources
e-Prime: Advances in Electrical Engineering, Electronics and Energy, 2023 The optimum setting of directional overcurrent relays (DOCRs) is required to avoid miscoordination and avail fast response. To fulfill these requirements, it is required to prefer optimization techniques and modifications in objective functions (OF ...
Shanker D. Godwal +4 more
doaj +1 more source
Protection Coordination Index Assessment Using Fuzzy Logic Controller
Energies, 2022 This paper proposes the assessment method of the protection coordination index (PCI) for overcurrent protection relay and upstream relay. The protection coordination index is an indicator of how properly the equipment is protected by protective relay ...
Choong-Koo Chang +1 more
doaj +1 more source
Optimal Coordination of Directional Overcurrent Relays for Microgrids Using Hybrid Interval Linear Programming - Differential Evolution [PDF]
Journal of Operation and Automation in Power Engineering, 2022 The relay coordination problem of directional overcurrent has been an active research issue in distribution networks and power transmission. In general, the problem of relay coordination is the nonlinearity of the optimization problem, which increases ...
P. Omidi, S. Abazari, S.M. Madani
doaj +1 more source
Harmonic Effects on Electromechanical Overcurrent Relays [PDF]
Doğuş Üniversitesi Dergisi, 2005 Elektromekanik asiri akim koruma roleleri sinusoidal akim altinda calismak uzere tasarlanmistir. Bu rolelerin harmonikli akimda calismalari guvenilir degildir. Literaturde harmonikler ve rolelerle ilgili pek cok teorik calisma bulunmaktadir. Bu makalede, harmoniklerin elektromekanik ters zamanli asiri akim rolesinin (TZAAR) calismasina etkileri ...
Dalcı, K. Burak +2 more
openaire +3 more sources