Results 41 to 50 of about 3,108 (255)

Automatic segmentation method for voltage sag detection and characterization [PDF]

2018 18th International Conference on Harmonics and Quality of Power (ICHQP), 2018
Although characterization of voltage sag is an essential part of voltage sag studies, the way that taking magnitude and duration as acknowledged basic characteristics cannot describe sag characteristics versus time. Hence automatic segmentation, which divides monitoring data sequence into segments, and characterization algorithm are proposed in this ...
Hu Wen-Xi, Xiao Xian-Yong, Jin Yun-Ling, Yao Dong-Fang   +3 more
openaire   +1 more source

Window Optimisation of Power Quality Signal Detection using Gabor Transform

ASM Science Journal, 2021
This paper presents power quality analysis on different signal characteristics, namely instantaneous sag, momentary sag, temporary sag, instantaneous swell, momentary swell, and temporary swell.
Muhammad Sufyan Safwan Mohamad Basir
doaj   +1 more source

Development of grid-side converter-based FRT control and protection in a grid-connected solar photovoltaic park system under different control modes

Frontiers in Energy Research, 2022
In a grid-connected solar photovoltaic system, voltage dips on the grid side, increased grid current, and overshoot in the inverter’s dc-link voltage are all noticed during grid disturbances. The grid code stipulates that in order to protect the cascaded
C. Nithya, J. Preetha Roselyn
doaj   +1 more source

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

Advanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai, Zeki Ayrildi, Buse Şen, Maik Rajkowski, Mathias Redondo Garcia, Markus Stricker, Guillaume Laplanche   +6 more
wiley   +1 more source

Detection of Series Arcs in Low-Voltage AC Power Lines Using Load Side Voltage Sag and Waveform Similarity Comparison

IEEE Access
The similarity between arc fault current waveforms and nonlinear load currents can lead to misjudgments in arc fault identification methods that rely on arc current. In response to this issue, this paper establishes a unified fault criterion based on the
Kaijie Wang, Xiangning Lin, Fanrong Wei, Hu Wei   +3 more
doaj   +1 more source

Voltage Sag Assessment, Detection, and Classification in Distribution Systems Embedded With Fast Charging Stations

IEEE Access, 2023
A fast charging station (FCS), which consists of eight fast and extreme chargers that operate individually and simultaneously, is considered in this research work. The FCS is supplied from the main grid as well as a Photovoltaic (PV) Farm that includes a
Sami M. Alshareef
doaj   +1 more source

Stretching the Printability Metric in Direct‐Ink Writing with Highly Extensible Yield‐Stress Fluids

Advanced Functional Materials, EarlyView.
This study introduces “drawability” as a new metric for assessing printability in direct‐ink writing, focusing on gap‐spanning performance and speed robustness. By designing yield‐stress fluids with high extensibility, we demonstrate that extensional strain‐to‐break significantly enhances printability.
Chaimongkol Saengow, Samya Sen, Joaquin Yus, Eliza E. Lovrich, Amanda G. Hoika, Kelly M. Chang, Arielle A. Pfeil, Nellie Haug, Amy J. Wagoner Johnson, Randy H. Ewoldt   +9 more
wiley   +1 more source

Redundancy-based approach for optimal number and location of power quality monitors in distribution systems with binary imperialist competitive approach

Automatika, 2022
This article deals with optimal employment of power quality monitors (PQMs) in distribution networks on the basis of the idea of monitor reach area. The proposed model uses binary string, representing the installation mode of PQMs (Yes or No) in each bus
Mohammad Mohammadi
doaj   +1 more source

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

Advanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen, Boris Rivkin, David Castellanos‐Robles, Ivan Soldatov, Lukas Beyer, Mariana Medina‐Sánchez   +5 more
wiley   +1 more source

ENHANCING LOW VOLTAGE RIDE THROUGH CAPABILITY IN UTILITY GRID CONNECTED SINGLE PHASE SOLAR PHOTOVOLTAIC SYSTEM [PDF]

Journal of Engineering Science and Technology, 2018
The steady rise in utility grid penetration of single phase solar photovoltaic system has contributed to the mandatory requirement of Low Voltage Ridethrough (LVRT) capability. LVRT capability provides stable grid integration during transient conditions.
RINI ANN JERIN A., MANU THOMAS, PALANISAMY K., UMASHANKAR S.   +3 more
doaj