Results 41 to 50 of about 262,873 (260)

Faulty Line Selection Method Based on Comprehensive Dynamic Time Warping Distance in a Flexible Grounding System

Energies, 2022
A flexible grounding system is a system in which the neutral point of the power supply is grounded via the arc suppression coil in parallel with a low-resistance resistor.
Yu He, Xinhui Zhang, Wenhao Wu, Jun Zhang, Wenyuan Bai, Aiyu Guo, Yu Chen   +6 more
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

On Learning with Finite Memory [PDF]

, 2012
We consider an infinite collection of agents who make decisions, sequentially, about an unknown underlying binary state of the world. Each agent, prior to making a decision, receives an independent private signal whose distribution depends on the state ...
Drakopoulos, Kimon, Ozdaglar, Asuman, Tsitsiklis, John   +2 more
core   +4 more sources

Network Localization of Fatigue in Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Fatigue is among the most common symptoms and one of the main factors determining the quality of life in multiple sclerosis (MS). However, the neurobiological mechanisms underlying fatigue are not fully understood. Here we studied lesion locations and their connections in individuals with MS, aiming to identify brain networks ...
Olli Likitalo, Jaakko Kungshamn, Albert Bellmunt‐Gil, Silvia Tommasin, Abhineet Ojha, Matias Viitala, Juho Aaltonen, Jyrki Lötjönen, Juha Koikkalainen, Pauli Ylikotila, Patrizia Pantano, Merja Soilu‐Hänninen, Juho Joutsa   +12 more
wiley   +1 more source

Research of Fault Line Selection Method of Distribution Network Based on Transient Zero-sequence Energy

Gong-kuang zidonghua, 2012
For problem of ineffectiveness of traditional line selection methods by use of single feature value caused by complex and random fault borderline, small steady component of fault and reverse phase of instantaneous zero-sequence power when single-phase ...
TIAN Shu, HE Jin-peng, NIE He
doaj  

Research on fault line selection method based on steady state variables

AIP Advances
When a single-phase ground fault occurs, the transient zero sequence current will significantly increase. So, it is possible to detect whether a single-phase grounding fault has occurred in the transmission line by calculating and comparing the amplitude
Sha Wang, Changsheng Liu, Shengkai Wei
doaj   +1 more source

Fault Protection Method for Low-Current Grounding Systems in Active Distribution Networks Based on an Improved Clustering Algorithm

IEEE Access
With the increasing global focus on carbon neutrality and the development of renewable energy, a large number of distributed generation units have been integrated into the distribution network to enhance sustainability and reduce carbon emissions.
Chen Xue, Jian Zhu, Shengmin Tan, Guojing Zhang, Chen Liu   +4 more
doaj   +1 more source

Approximate Entropy Based Fault Localization and Fault Type Recognition for Non-solidly Earthed Network

Measurement Science Review, 2012
For non-solidly earthed network, the fault localization of single phase grounding fault has been a problem. A novel fault localization and fault type recognition method of single phase grounding fault based on approximate entropy is presented.
Pang Qingle, Liu Xinyun, Sun Bo, Ling Qunli   +3 more
doaj   +1 more source

Vector Modulation-Based Model Predictive Current Control with Filter Resonance Suppression and Zero-Current Switching Sequence for Two-Stage Matrix Converter

Energies, 2021
This paper proposes a novel model predictive current control scheme for two-stage matrix converter. The switching frequency is kept constant by fixing the switching instant. The control strategy achieves to control source reactive power in the input side
Zhengfei Di, Demin Xu, Kehan Zhang
doaj   +1 more source

Frequency and fundamental signal measurement algorithms for distributed control and protection applications [PDF]

, 2009
Increasing penetration of distributed generation within electricity networks leads to the requirement for cheap, integrated, protection and control systems.
Burt, G.M., McDonald, J.R., Roscoe, Andrew J.   +2 more
core   +1 more source