Results 21 to 30 of about 8,527 (239)
EnergiesProtecting AC microgrids (MGs) is a challenging task due to their dual operating modes—grid-connected and islanded—which cause sudden variations in fault currents. Traditional protection methods may no longer ensure network security.
León F. Serna-Montoya +3 more
doaj +1 more source
An advanced protection coordination technique for solar in-feed distribution systems
Ain Shams Engineering Journal, 2019 Distributed electricity resources (DERs) are power generating sources which are installed to meet the increasing peak demand. Renewable and zilch emission characteristics are making them as a perfect choice in distribution system.
M.V. Tejeswini +3 more
doaj +1 more source
Тhe study of electronic generation effect on statical aperiodic stability of electrical power system
Известия высших учебных заведений: Проблемы энергетики, 2020 One of the key aspects in the development of power engineering all over the world is the use of distributed small-scale generation. This is both based on fuel carbon resources with a synchronized connection between sources when they are connected to the ...
A. G. Fishov +4 more
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Optimal coordination of overcurrent relays for microgrid operation using JAYA algorithm
e-Prime: Advances in Electrical Engineering, Electronics and EnergyIn modern microgrids, relay coordination is a very tedious task because of the variation in magnitude and direction of fault current. The change in fault current is diverse for inverter interfaced DGs (IIDGs) and synchronous-based DGs (SBDGs) The ...
Naveen Kumar, Dinesh Kumar Jain
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Elektrika, 2020 According to energy observers from the Institute for Essential Services Reform (IESR) the number of electricity consumers in Indonesia has increased by an average of 6-7% annually followed by an increase in the area of its services. An increasingly broad
Indri Safitri +2 more
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Analytical Method for Directional over Current Relays Coordination in Micro Grids
International Journal of Recent Technology and Engineering (IJRTE), 2019 Microgrids are consisting of interconnected loads and distributed generators which can operate with and without utility. The significant implementation of microgrids challenged the protection engineers especially in designing protection microgrid schemes.
Ahmed R. Abul'Wafa +2 more
openaire +1 more source
Molecular Oncology, EarlyView.Circulating microRNA profiles distinguish nonmalignant Lynch syndrome from cancer‐associated Lynch syndrome, sporadic colorectal cancer, and healthy controls. Age‐stratified analysis reveals disease‐specific regulatory states, and a six‐miRNA panel shows concordant separation in an independent colorectal tissue cohort.
Ramadhani Salum Chambuso +5 more
wiley +1 more source
Gravity‐Dependent Modulation of Downbeat Nystagmus: Insights From Velocity‐Storage Dysfunction
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Downbeat nystagmus varies with head position, a phenomenon termed gravity‐dependent modulation. We aimed to clarify its mechanism using a velocity‐storage model. Methods In 10 patients with downbeat nystagmus due to cerebellar disorders, we recorded eye movements at different pitch‐ and roll‐axis head positions.
Ji‐Hyung Park +5 more
wiley +1 more source
IEEE AccessThe increasing penetration of inverter-based resources (IBRs) in power distribution networks complicates conventional overcurrent protection due to their limited fault current contributions and variable frequency characteristics.
Abdelsalam Elhaffar +3 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Advanced ink systems for solution‐processed textile triboelectric nanogenerators are systematically summarized, spanning conductive, tribo‐negative, and tribo‐positive layers. By connecting ink chemistry, deposition methods, and device function, the present review reveals the key governing principles of solution development and highlights practical ...
Xinlong Sun, Stephen Beeby
wiley +1 more source