Results 1 to 10 of about 241,915 (134)

Numerical Simulation of Galloping Characteristics of Multi-Span Iced Eight-Bundle Conductors

Frontiers in Energy Research, 2022
In this article, the numerical model of the multi-span iced eight-bundle conductor is established using the nonlinear finite element method, the galloping of the line under different parameters is simulated, and the tension in the galloping process is ...
Ding Shunli, Cai Mengqi, Cai Mengqi, Tian Bowen, Liang Junhao, Zhou Linshu, Wu Chuan, Huang Hanjie, Liu Jun   +8 more
doaj   +3 more sources

A new theory for torsional stiffness of multi-span bundle overhead transmission lines [PDF]

IEEE Transactions on Power Delivery, 1998
A new theory for the torsional stiffness of multi-span bundle overhead power transmission lines is presented. The torsional mechanism is clarified. A simplified torsional stiffness formula is obtained which allows for the complex bundle stiffness to be directly calculated from the basic parameters.
Wang, Jianwei, Lilien, Jean-Louis
openaire   +3 more sources

Retrieval algorithm for the column CO₂ mixing ratio from pulsed multi-wavelength lidar measurements [PDF]

Atmospheric Measurement Techniques, 2021
The retrieval algorithm for CO2 column mixing ratio from measurements of a pulsed multi-wavelength integrated path differential absorption (IPDA) lidar is described.
X. Sun, J. B. Abshire, J. B. Abshire, A. Ramanathan, A. Ramanathan, S. R. Kawa, J. Mao, J. Mao   +7 more
doaj   +1 more source

A multi-purpose, multi-rotor drone system for long-range and high-altitude volcanic gas plume measurements [PDF]

Atmospheric Measurement Techniques, 2021
A multi-rotor drone has been adapted for studies of volcanic gas plumes. This adaptation includes improved capacity for high-altitude and long-range, real-time SO2 concentration monitoring, long-range manual control, remotely activated bag sampling and ...
B. Galle, S. Arellano, N. Bobrowski, N. Bobrowski, V. Conde, T. P. Fischer, G. Gerdes, A. Gutmann, T. Hoffmann, I. Itikarai, T. Krejci, E. J. Liu, E. J. Liu, K. Mulina, S. Nowicki, S. Nowicki, T. Richardson, J. Rüdiger, K. Wood, J. Xu   +19 more
doaj   +1 more source

Numerical Analysis on the Sub-Span Oscillation of Iced Eight-Bundle Conductors During Galloping

Frontiers in Energy Research, 2022
Under the excitement of wind loads, UHV transmission lines are subject to two types of vibration phenomena, namely, sub-span oscillation and galloping.
Liu Yu, Cai Mengqi, Cai Mengqi, Wang Qingyuan, Wang Qingyuan, Wang Qingyuan, Zhou Linshu, Xu Qian, Ding Shunli, Liu Jun, Huang Chunlin   +10 more
doaj   +1 more source

Dynamic Characteristic of Conductor After Ice-Shedding and Simulation Analysis of the Tension Insulator String

IEEE Access, 2022
Electric power fittings are the link between conductors and transmission towers, and it is essential to improve their ability to withstand damage. To obtain the actual load of electric power fittings and study the stress of each electric power fitting ...
Lv Zhongbin, Xiaohui Liu, Bo Zhang, Tao Yaguang, Fangyu Li, Li Qing, Bo Yan   +6 more
doaj   +1 more source

Distributed Raman Amplification for Fiber Nonlinearity Compensation in a Mid-Link Optical Phase Conjugation System

Sensors, 2022
In this paper, we review different designs of distributed Raman amplifiers which have been proposed to minimize the signal power profile asymmetry in mid-link optical phase conjugation systems.
Mingming Tan, Paweł Rosa, Tu T. Nguyen, Mohammad A. Z. Al-Khateeb, Md. Asif Iqbal, Tianhua Xu, Feng Wen, Juan D. Ania-Castañón, Andrew D. Ellis   +8 more
doaj   +1 more source

Optimal Design and Control of SSSCs for TLs Considering Technical and Economic Indices Using GA and SAMPE-JAYA Algorithms

IEEE Access, 2021
Improving transmission lines (TL) steady-state stability limit can be achieved by Static Synchronous Series Compensators (SSSC) that work as a converter-based compensator.
Ahmed E. Elgebaly, Ibrahim B. M. Taha, Ahmed M. Azmy, Hossam A. Abd El-Ghany   +3 more
doaj   +1 more source

Wind-Resistant Capacity Modeling for Electric Transmission Line Towers Using Kriging Surrogates and Its Application to Structural Fragility

Applied Sciences, 2021
Wind loading on a transmission tower structure is jointly influenced by the wind field, structural parameters, and the geo-spatial configuration of the transmission line.
Yunzhu Cai, Jiawei Wan
doaj   +1 more source

Investigation Into the Galloping Characteristics of Multispan Iced Covered Conductors

IEEE Access, 2022
A full multispan two-degree-of-freedom (2-DOF) iced covered transmission line model is presented. Taking multispan conductors as the research object, based on the Hamiltonian principle, a nonlinear galloping model of multispan conductors considering the ...
Jia-Yan Zheng, Qi-Hang Shen, Xiao-Hui Liu   +2 more
doaj   +1 more source