Results 61 to 70 of about 39,891 (249)

A Review of Overcurrent Protection in Smart Grids Under Cyber‐Physical Threats With a Cyber‐Physical Evaluation Framework

Energy Science &Engineering, EarlyView.
By manipulating current and voltage measurements, an assailant can induce unwanted relay action while attempting to avoid detection. Detecting advanced cyber intrusions in power protection environments requires specialised data analysis and anomaly detection methods.
Feras Alasali, Anas AlMajali, Naser Naily, Hassen Loukil, Salah AbuGhalyon, William Holderbaum, Abdelaziz Salah Saidi   +6 more
wiley   +1 more source

Short-Circuit Protection Schemes for LVDC Microgrids Based on the Combination of Hybrid Circuit Breakers and Mechanical Breakers

International Transactions on Electrical Energy Systems, 2023
In recent years, low-voltage direct current (LVDC) microgrids are becoming more attractive because they represent a solution to integrate renewable sources, storage, and electronic loads bringing some advantages in comparison with traditional AC grids ...
Riccardo Lazzari, Luigi Piegari
doaj   +1 more source

Line Protection Operate Time: How Fast Shall It Be?

IEEE Access, 2021
An ultra-high-speed protective relay has been an important topic within the scientific community, and specifically within the power industry, for decades.
Sinisa Zubic, Zoran Gajic, Davor Kralj
doaj   +1 more source

Topology assessment for 3 + 3 terminal offshore DC grid considering DC fault management [PDF]

, 2014
Peer ...
Jovcic, Dragan, Nguefeu, S., Taherbaneh, Mohsen, Taisne, J.P.   +3 more
core   +1 more source

Overcoming contact issues in bottom‐contact, short‐channel organic transistors with van der Waals conformal contacts

FlexMat, EarlyView.
A new conformal contact transfer strategy is developed to enhance the contact interface quality between organic semiconductors and metal electrodes in bottom‐contact, short channel organic field‐effect transistors. By utilizing interfacial water permeation and surface functionalization, the method achieves a van der Waals conformal contact interface ...
Yuan Tan, Wei Deng, Yongji Wang, Haoyu Jiang, Xinghan Meng, Xiujuan Zhang, Xiaohong Zhang, Jiansheng Jie   +7 more
wiley   +1 more source

Analysis of DC Fast Circuit Breaker Opening and Arc Extinction in Urban Rail Transit Traction Power Supply System

Chengshi guidao jiaotong yanjiu
Objective Arc extinction technology for DC (direct current) is one of the design challenges in urban rail transit traction power supply systems. Therefore, it is necessary to analyze the principles of DC opening and arc extinction for main DC fast ...
MENG Junfeng, HU Genshui, GUO Zhiqi, HE Xingjian   +3 more
doaj   +1 more source

INVESTIGATION OF THE PARAMETERS OF RELIABILITY OF LOW VOLTAGE COMMUTATION DEVICES ON OPERATING DATA OF INDUSTRIAL ENTERPRISES

Известия высших учебных заведений: Проблемы энергетики, 2019
: The article presents an algorithm for estimating reliability parameters - probability of failure-free operation time and failure rate of low-voltage switching devices based on statistical data on failures of circuit breakers installed in control and ...
E. I. Gracheva, R. R. Sadykov, R. R. Khusnutdinov, R. E. Abdullazyanov   +3 more
doaj   +1 more source

Simulation study on arc motion process of DC miniature circuit breakers

AIP Advances, 2023
Based on the theory of magnetohydrodynamics, a mathematical model of air arc in the arc extinguishing chamber of a DC miniature circuit breaker was established. By coupling external circuit characteristics and contact movement process, the motion process
Dezhi Xiong, Shidong Chen, Yu Xiao, Chen Ma   +3 more
doaj   +1 more source

Influence of UHV GIL access on transient recovery voltage of circuit breaker

电力工程技术, 2022
The access of ultra high voltage (UHV) gas-insulated transmission line (GIL) affects both the transient recovery voltage (TRV) amplitude and the rate of rise of TRV (RRRV) of circuit breakers,which may endanger the breaking capacity of circuit breakers ...
SUN Yi, LIU Jinghui, ZHENG Xinlei, LI Jiangtao, XU Yiqing, SHI Dajun   +5 more
doaj   +1 more source

Tips and Tricks for Organizing a Summer School—A Case Study Based on the “Nexus of Organic Matter Analytical Developments” School

Limnology and Oceanography Bulletin, EarlyView.
Abstract In June 2025 we organized and ran the first “Nexus of Organic Matter Analytical Developments” (NOMAD) Summer School at the Tjärnö Marine Laboratory in Sweden. In this article, we describe its development and implementation, with the aim of offering practical insights into the planning process, a generalizable framework for future summer ...
Alexander J. Craig, Alina Mostovaya, Juliana D'Andrilli, Angela Douglass, Niamh Gurrin, Sarah Messenger, Ava McIlvaine, Gabriel Gustavo Monteiro, Penghui Li, Amir Reza Shahabinia, Brett Walker, Makayla Ward, Margot E. White, Urban J. Wünsch, Jeffrey A. Hawkes   +14 more
wiley   +1 more source