Results 41 to 50 of about 851,029 (275)

Overcurrent and Earthfault Relay Coordination for Microgrid with Numerical Relay Features

International Journal of Innovative Technology and Exploring Engineering, 2020
This Paper deals with the Relay Coordination for microgrids by considering the symmetrical and unsymmetrical faults. A microgrid is an active distribution system in which the renewable energy sources and loads connected to feeders operate parallel or autonomously from the main power grid. In a microgrid, Overcurrent relays can be used as the protection
C. Nayanatara, P. Shanmugapriya*, J. Baskaran, P. Sharmila   +3 more
openaire   +1 more source

Relay selection methods for maximizing the lifetime of wireless sensor networks [PDF]

, 2013
Combined analytical and fuzzy techniques are proposed for improving the battery lifetime, performance, as well as energy efficiency of wireless sensor networks (WSNs) with the aid of efficient relay selection methods.
Engel, Fabio, Taufik Abrao, Fabio Engel, Hanzo, Lajos, Abrao, Taufik, Lajos Hanzo   +5 more
core   +1 more source

Optimal coordination of overcurrent relays for microgrid operation using JAYA algorithm

e-Prime: Advances in Electrical Engineering, Electronics and Energy
In 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
doaj   +1 more source

A Feasibility Study of Frequency Regulation Energy Storage System Installation in a Power Plant

Energies, 2020
The aim of this work is to analyze and stabilize the power system when connecting an energy storage system (ESS) to replace the traditional power reserve of a power plant.
Lateef Onaadepo Ibrahim, Youl-Moon Sung, Doosoo Hyun, Minhan Yoon   +3 more
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

Unique circulating miRNAome signatures captured with distinct molecular states in Lynch syndrome and sporadic colorectal cancer

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, Md Shohel Ul Islam, Rosa M Xicola, Raj Ramesar, Xavier Llor, Sinclair Steele   +5 more
wiley   +1 more source

Distance optimization and directional overcurrent relay coordination using edge-powered biogeography-genetic algorithms

Journal of Cloud Computing: Advances, Systems and Applications
The effective functioning and regulation of power systems crucially rely on the coordination of distance and directional overcurrent relays. Accurate fault detection and successful clearing sequences require support for each relay and the maintenance of ...
Mohammadreza Aminian, Mehdi Jafari Shahbazzadeh, Mahdiyeh Eslami   +2 more
doaj   +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, Eun‐Hyuk Choi, Jorge Otero‐Millan, David S. Zee, Jeong‐Yoon Choi, Ji‐Soo Kim   +5 more
wiley   +1 more source

Microgrid Protection through Adaptive Overcurrent Relay Coordination

Electricity, 2021
The inclusion of distributed energy resources (DER) in Microgrids (MGs) comes at the expense of increased changes in current direction and magnitude.
Haneen Bawayan, Mohamed Younis
doaj   +1 more source

Advances in Solution‐Processed Textile Triboelectric Nanogenerators: Ink Formation, Processing Strategies, Applications, and Challenges

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