Results 31 to 40 of about 719,011 (231)

Single-User Performance of Uplink DS-CDMA using Relay-Assisted Diversity [PDF]

, 2006
In a wireless system with distributed mobile users, several mobile users may cooperate with each other in order to achieve the transmit diversity. In this contribution we investigate the single-user performance of an uplink direct-sequence code-division ...
Fang, W, Yang, L-L, Hanzo, L
core   +2 more sources

Protection of power transformers against geomagnetically induced currents [PDF]

Serbian Journal of Electrical Engineering, 2011
The article examines the problem of saturation and failure of power transformers under geomagnetically induced currents and currents of the E3 component of high-altitude nuclear explosions.
Gurevich Vladimir
doaj   +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

New concept of microprocessor protective devices design [PDF]

Serbian Journal of Electrical Engineering, 2010
Transition from electromechanical to digital protective relays is accompanied with serious technical problems. The author offers a new approach in designing the digital relays capable of solving these problems.
Gurevich Vladimir
doaj   +1 more source

Study on Reliability of PACSs with Integrated Consideration of Both Basic and Mission Reliability

Energies
Protective relays play a fundamental role in power systems, whose functions consist of three parts, namely protection, automation, and control, thus called the PAC altogether.
Xinzhi Chen, Long Jin
doaj   +1 more source

MODELING TO IMPROVE THE PERFORMANCE OF REVERSE POWER RELAY IN GENERATOR

Jurnal Ilmiah SINERGI, 2020
The generator is the primary component in electricity generation and requires a protection system from internal and external interference that occurs. This study considers how to improve the performance of relays in power plants.
Azriyenni Azhari Zakri, Fahrul Rozi
doaj   +1 more source

Improved Adaptive Protection Scheme Based Combined Centralized/Decentralized Communications for Power Systems Equipped With Distributed Generation

IEEE Access, 2022
Recently, numerical relays with communication capabilities have been employed to provide adaptive solutions for Distributed Generations (DGs) protection issues.
Alaa Hmam El-Hamrawy, Ahmed Abdel Mordi Ebrahiem, Ashraf Ibrahim Megahed   +2 more
doaj   +1 more source

Optimal coordination of directional overcurrent relays using hybrid fractional computing with gravitational search strategy

Energy Reports, 2021
The protection system has a vital role in subsystems of the power network including the generation, transmission and distribution system. This system combines several types of protection relays including directional over current relay, differential relay,
Yasir Muhammad, Muhammad Asif Zahoor Raja, Muhammad Abid Ali Shah, Saeed Ehsan Awan, Farman Ullah, Naveed Ishtiaq Chaudhary, Khalid Mehmood Cheema, Ahmad H. Milyani, Chi-Min Shu   +8 more
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

Adaptive overcurrent relay (AOCR) based on Fano Factors of current signals

The Journal of Engineering, 2023
A Fano Factor‐based adaptive overcurrent protection scheme, that automatically adjusts the protection settings in response to the prevailing conditions of the power system, is presented.
Ragab Abdallah Mahmoud, Om Parkash Malik
doaj   +1 more source