Results 81 to 90 of about 1,434 (216)

Classification of Broadband Oscillations Using Wavelet Convolution and Multi‐Channel Attention Network

Energy Internet, EarlyView.
ABSTRACT Accurate identification of broadband oscillation types is a prerequisite for implementing appropriate control strategies. The strongly nonlinear, nonstationary and multi‐modal characteristics of broadband oscillation signals impose higher demands on identification methods. Practical applications face challenges such as coupling effects between
Jinduo Yang, Ji Li, Yiyan Li, Yang Gao, Qingyuan Zhang, Yang Kou, Xiao Hu, WeiLe Liang   +7 more
wiley   +1 more source

Phasor Measurement Unit Testing [PDF]

, 2012
Our power system nowadays operate as a huge complex machine that often operate close to their stability limit. This means that any disturbances or faults may cause power oscillations and lead to cascade outages.
Thi Ai Nguyen, N. (author)
core  

Task‐Evoked Functional Activation and Coupling With CSF Flow Detected in the Human Brain With Ultrashort Echo Time fMRI at 7 T

NMR in Biomedicine, Volume 39, Issue 8, August 2026.
Ultrashort and zero echo time (UTE and ZTE) MRI techniques generate functional contrast through inflow effects, making them suitable for studying cerebral blood flow and cerebrospinal fluid (CSF) dynamics. In a 7‐T study of 13 participants performing a visual task, we demonstrate that UTE produced robust, reproducible activations with group‐level ...
Sara Ponticorvo, Ekaterina Paasonen, Pavel Filip, Douglas L. Rothman, Juha S. Valjakka, Olli Gröhn, Shalom Michaeli, Silvia Mangia   +7 more
wiley   +1 more source

Improvement of Phasor Measurement Unit Performance [PDF]

, 2010
Fast measurements of the instantaneous amplitude and phase angle of the fundamental components and frequency in three-phase power systems may be investigated with high accuracy through the use of modern power instruments such as Phasor Measurement ...
MAUN, JEAN CLAUDE, OUADI, ABDERRAHMANE, Bentazi, Hamid   +2 more
core  

An Optimal PMU Placement With Reliable Zero Injection Observation

IEEE Access, 2018
Zero injection (ZI) is an inherent characteristic of a power grid. The effect of ZI (ZI effect) is usually utilized as an auxiliary measurement termed ZI observation for simplification. We discover that the ZI observation can transmit. The reliability of
Chengchao Lu, Zhongjie Wang, Ming Ma, Runjie Shen, Yang Yu   +4 more
doaj   +1 more source

Concurrently Achieving 4.6 W/M2 and 120,000 Cyclability Enabled by Extendable Swing Arms in Rotational Triboelectric Nanogenerator

Advanced Science, Volume 13, Issue 38, 9 July 2026.
A rotational energy harvesting device that successfully reconciles high power density with mechanical durability through a hybrid sliding‐and‐bouncing kinematic mechanism is reported. The success reported in our paper includes addressing a dilemma where enhanced electrical output comes at the cost of increased friction and wear, limiting the practical ...
Yihong Lin, Jiaming Zhou, In‐Yong Suh, Eunjong Kim, Kin Chiu Yip, Dae‐jin Kim, Jang‐Mook Jeong, Young‐Jun Kim, Jinyoung Jeon, Ju‐Hyuck Lee, Yoon‐Hwae Hwang, Sang‐Woo Kim, Dong‐Myeong Shin   +12 more
wiley   +1 more source

Microgrid Islanding Detection Using D-PMU and Phase Angle Analysis of Negative Sequence Impedance

IEEE Access
Unintentional islanding detection is a major challenge during the operation of a microgrid. When islanding occurs, distributed energy resources (DERs) need to be disconnected quickly, under 2 seconds, which makes fast islanding detection crucial.
Asim Chaulagain, Ramakrishna Gokaraju, Nurul Chowdhury, Krish Narendra   +3 more
doaj   +1 more source

Triple‐Mode Ferroelectric Thin‐Film Transistor for Hybrid Electrical–Optical Reservoir Computing

Advanced Science, Volume 13, Issue 42, 28 July 2026.
A triple‐mode ferroelectric thin‐film transistor is developed by integrating Si3N4/HZO/IGZO layers to realize three independent memory modes: electric long‐term, electric short‐term, and optical short‐term. This single‐device architecture functions as both a reservoir and readout layer, achieving 92.43% MNIST accuracy. It offers a fully hardware‐based,
Hyeonho Lee, Seungjun Lee, Tae‐Hyeon Kim, Yonghee Jeong, Gwangmin An, Minsu Ko, Junsu Yu, Heung Soo Kim, Yang Chai, Sungjun Kim   +9 more
wiley   +1 more source

Estudo da utilização de medição sincronizada de fasores para o esquema de controle de emergência do sistema de transmissão de Itaipu em 60 Hz [PDF]

, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2009O presente trabalho de dissertação aborda o uso de dados de medição fasorial sincronizada para o ...
Pesente, Jonas Roberto
core  

Phasor Measurement Unit Based on Robust Dynamic State Estimation in Power Systems Using M-Estimators [PDF]

, 2014
This paper introduces the uses of Robust Dynamic State Estimation (RDSE) with Phasor Measurement Unit (PMU), The M-Estimators Quadratic Linear (QL) and Square Root (SR) Estimators have been used.
Li, Gengyin, Dowi, Sideig Abdelrhman
core   +2 more sources