Results 71 to 80 of about 1,625 (202)
IET Renewable Power Generation, 2022 Fault currents of inverter‐interfaced distributed generators (IIDGs) depend on inverter controllers. Thus, IIDGs fault currents are different than those of synchronous‐based DGs, both from the magnitude and waveshape perspectives.
Talal Elemamali Sati, Maher A. Azzouz
doaj +1 more source
Challenges, advances and future directions in protection of hybrid AC/DC microgrids [PDF]
, 2017 Hybrid microgrids which consist of AC and DC subgrids interconnected by power electronic interfaces have attracted much attention in recent years. They not only can integrate the main benefits of both AC and DC configurations, but also can reduce the ...
Dong, Xinzhou +3 more
core +1 more source
Optimal coordination of directional overcurrent relays using improved mathematical formulation
IET Generation, Transmission & Distribution, 2018 Achieving optimum coordination of directional overcurrent relays is a very complicated task in the large interconnected system including huge numbers of relays. In the literature, various objective functions (OFs) are reported to obtain minimum operating time of relays and minimum prescribed discrimination time between the operations of primary and ...
Vipul N. Rajput +2 more
openaire +1 more source
International Transactions on Electrical Energy Systems, Volume 2025, Issue 1, 2025.The integration of distributed generators (DGs), particularly renewable energy sources, into conventional distribution networks (DNs) presents significant protection challenges. This study introduces a novel digital twins‐based overcurrent relay (OCR) protection scheme with dynamic dual‐level characteristic curves for microgrids.
Feras Alasali +7 more
wiley +1 more source
IEEE AccessThe coordination of directional overcurrent relays (DOCRs) plays a critical role in ensuring the reliability and robustness of modern electrical power protection systems.
Abdul Wadood +3 more
doaj +1 more source
Coordination of directional overcurrent and distance relays based on nonlinear multivariable optimization [PDF]
, 2020 To ensure stability, security, and protection of electrical equipment from the damage the suitable coordination must be made in interconnected networks.
Abd Almuhsen, Tahseen Ali +1 more
core +3 more sources
Journal of Electrical and Computer Engineering, Volume 2025, Issue 1, 2025.Fault current limiters (FCLs) are essential components in modern power systems for critical protection against the damaging effects of fault currents. With extensive short circuits, routine electrical faults, and an increasing risk of failure due to unprecedented events, the development of different types of FCL has gained attention.
Tamalika Chowdhury +2 more
wiley +1 more source
Iranian Journal of Electrical and Electronic Engineering, 2015 Most studies in relay coordination have focused solely on coordination of overcurrent relays while distance relays are used as the main protection of transmission lines.
Y. Damchi, J. Sadeh, H. Rajabi Mashhadi
doaj
IEEE AccessNetwork reconfiguration enables the restoration of power supply in interrupted areas after faults or planned maintenance events. However, changes in network topology can often lead to alteration in the direction and magnitude of fault currents ...
Michele Rojnic +3 more
doaj +1 more source
Improved protection system for phase faults on marine vessels based on ratio between negative-sequence and positive-sequence of the fault current [PDF]
, 2018 This paper presents a new method to protect the radial feeders on marine vessels. The proposed protection method is effective against Phase-Phase (PP) faults and is based on evaluation of the ratio between the negative-sequence and positive-sequence of ...
Bak, Claus +6 more
core +2 more sources