Results 21 to 30 of about 2,477 (219)

Evaluation of a Local Fault Detection Algorithm for HVDC Systems [PDF]

, 2019
A great increase in the amount of energy generated from clean and renewable sources integrated in the electric power system is expected worldwide in the coming years.
Eguia Lopez, P., Larruskain Eskobal, M., Perez Molina, M.J., Rodriguez Sanchez, R., Santos Mugica, M.   +4 more
core   +2 more sources

Coordination of non‐directional overcurrent relays and fuses in active distribution networks considering reverse short‐circuit currents of DGs

IET Generation, Transmission & Distribution, 2021
Abstract The main protection equipment in radial distribution networks are non‐directional overcurrent relays (NDOCR) and fuses which are coordinated using the conventional protection coordination method.
Mahdi Ghotbi‐Maleki, Reza Mohammadi Chabanloo, Mohammad Reza Taheri, Hatem H. Zeineldin   +3 more
doaj   +1 more source

The Plant Propagation Algorithm for the Optimal Operation of Directional Over-Current Relays in Electrical Engineering

Mehran University Research Journal of Engineering and Technology, 2020
In modern and large scale power distribution topologies, directional relays play an important role in the operation of an electrical system. These relays must be coordinated optimally so that their overall operating time is reduced to a minimum. They are
Muhammad Sulaiman, Muhammad Sulaman, Abdelwahed Hamdi, Zubair Hussain Hussain   +3 more
doaj   +1 more source

Optimal Coordination of Directional Overcurrent Relays in Meshed Active Distribution Network Using Imperialistic Competition Algorithm

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

Hybrid Harris hawks optimization with sequential quadratic programming for optimal coordination of directional overcurrent relays incorporating distributed generation

Alexandria Engineering Journal, 2021
This paper presents a new hybrid algorithm of Harris hawks’ optimization with sequential quadratic programming (HHO-SQP) for optimal coordination of directional overcurrent relays to find optimal relays settings.
Salah K. ElSayed, Ehab E. Elattar
doaj   +1 more source

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

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, Burt, Callavik, Dong Chen, Mitchell, Mohamed Emad Farrag, Oudalov, Waqas Javed, Wu, Xue, Yan Xu, Zhong   +11 more
core   +1 more source

Optimal protection coordination for directional overcurrent relays in radial distribution networks with inverter-based distributed energy resources

International Journal of Electrical Power & Energy Systems
The optimal setting of directional overcurrent relays ensures the reliable protection and fast fault clearance of radial distribution networks. However, the increasing proliferation of inverter-based distributed energy resources can result in protection ...
Jie Li, Jingtong Feng, Min Huang, Shenquan Liu, Gang Wang   +4 more
doaj   +1 more source

A Distribution Line Protection Scheme for Network with Distributed Generation

Jurnal Nasional Teknik Elektro, 2021
Installation of distributed generations (DGs) can cause performance degradation of distribution lines protection. Therefore, the objective of this paper is to propose a protection scheme that can be a solution for this protection line degradation..
Adrianti Adrianti, Edwindiansyah Asharry, Muhammad Nasir   +2 more
doaj   +1 more source

Optimal Coordination of Directional Overcurrent Relays Using Hybrid Firefly–Genetic Algorithm

Energies, 2023
The application of directional overcurrent relays (DOCRs) plays an important role in protecting power systems and ensuring their safe, reliable, and efficient operation.
Tareq Foqha, Maher Khammash, Samer Alsadi, Osama Omari, Shady S. Refaat, Khaled Al-Qawasmi, Ali Elrashidi   +6 more
doaj   +1 more source