Results 31 to 40 of about 3,564 (235)

Analysis of galloping amplitude for conductors with interphase spacers

30th Annual Conference of IEEE Industrial Electronics Society, 2004. IECON 2004, 2005
The main purpose of this paper is to calculate the behaviors of interphase spacers to reduce the amplitude of galloping in conductors. In simulation, three phases and iced-single/two-bundles conductors with/without spacers are considered in viewpoint of standard cases.
Hwan-Seong Kim, Tuong-Long Nguyen
openaire   +2 more sources

NORMAL VIBRATIONS OF SAGGING CONDUCTORS OF OVERHEAD POWER LINES

International Journal for Computational Civil and Structural Engineering, 2022
The phenomenon of self-excitation of thermomechanical vibrations of current-carrying conductors, experimentally discovered by academician A.F. Ioffe, is of practical interest as a possible explanation of the phenomenon of galloping conductors of ...
Airat Valiullin, Alexander Danilin, Valery Feldshteyn   +2 more
doaj   +1 more source

Determination of the minimum wind speed leading to the galloping of conductors [PDF]

E3S Web of Conferences, 2020
The object of research in this paper is the split phase of overhead power lines. The study of the aeroelastic instability of the icy conductors of the split phase for a multi-span system has already been explored using the method of determining the Hurwitz stability criterion. In multi-span systems, where conductors are interconnected through a garland
Zhamanbaev Muratkali, Ilieva Diana, Abitaeva Rakhimash, Ongar Bulbul   +3 more
openaire   +2 more sources

Galloping Vibration Monitoring of Overhead Transmission Lines by Chirped FBG Array

Photonic Sensors, 2022
A distributed online fiber sensing system based on the phase-sensitive optical time domain reflectometer (Φ-OTDR) enhanced by the drawing tower fiber Bragg grating (FBG) array is presented and investigated experimentally for monitoring the galloping of ...
Qizhong Yan, Ciming Zhou, Xuebin Feng, Chi Deng, Wenyu Hu, Yimin Xu   +5 more
doaj   +1 more source

On-line Monitoring of Sag and Icing of Overhead Transmission Lines

Journal of Harbin University of Science and Technology, 2023
In order to realize on-line icing and galloping monitoring of overhead transmission lines, an on-line monitoring method for overhead transmission lines based on phase-sensitive optical time domain reflectometry (Φ-OTDR) is proposed.
YANG Xiaolong, YUAN Hanqing, SUN Chenjun, MA Chao, LI Jing   +4 more
doaj   +1 more source

Transverse galloping of two-dimensional bodies having a rhombic cross-section [PDF]

, 2014
Transverse galloping is a type of aeroelastic instability characterized by oscillations perpendicular to wind direction, large amplitude and low frequency, which appears in some elastic two-dimensional bluff bodies when they are subjected to an incident ...
Alonso Rodrigo, Gustavo, Ibarra, D., Meseguer Ruiz, José, Sorribes Palmer, Felix   +3 more
core   +3 more sources

Theoretical Analysis and Experimental Validation on Galloping of Iced Transmission Lines in a Moderating Airflow

Shock and Vibration, 2021
Galloping of an iced transmission line subjected to a moderating airflow has been analysed in this study, and a new form of galloping is discovered both theoretically and experimentally.
Bing Huo, Xuliang Li, Fujiang Cui, Shuo Yang   +3 more
doaj   +1 more source

Galloping Performance of Transmission Line System Aeroelastic Model with Rime Through Wind-Tunnel Tests

Energies
This study presents an experimental investigation for the galloping performance of the transmission line system with rime under wind excitation. A full aeroelastic model wind-tunnel test is conducted to investigate the dynamic response of a two-bundled ...
Mingguan Zhao, Meng Li, Shenglong Li, Yuanhao Wan, Yang Hai, Chunguang Li   +5 more
doaj   +1 more source

Characterization of clay-modified thermoset polymers under various environmental conditions for the use in high-voltage power pylons [PDF]

, 2017
The effect of nanoclay on various material properties like damping and strength of typical thermoset polymers, such as epoxy and vinyl ester, was investigated.
Dannemann, Martin, Høgsberg, Jan Becker, Kliem, Mathias, Wang, Qian   +3 more
core   +2 more sources

Asymmetry in Skipping Enhances Viability Against Control Input Noise

Advanced Robotics Research, EarlyView.
Quadruped animals use asymmetric galloping gaits at high speeds, yet the functional role of this asymmetry remains unclear. This study shows that left–right asymmetry in touchdown angles enhances robustness to control noise. Using a simple two‐legged locomotion model and viability theory, it demonstrates that asymmetric skipping substantially enlarges ...
Yuichi Ambe, Alvin So, Shinya Aoi
wiley   +1 more source