Results 1 to 10 of about 3,984,557 (310)

Autonomous Live-Line Maintenance Robot for a 10 kV Overhead Line

open access: yesIEEE Access, 2021
Live work is a dangerous and complex operation that endangers the lives of operators. This paper presents an autonomous live-line maintenance robot (ALMR), which is applied to 10 kV overhead lines.
Jiabo Feng, Weijun Zhang
doaj   +2 more sources

Degradation of superhydrophobic aluminium overhead line conductor surfaces

open access: yesHigh Voltage
It has been shown that noise emissions from HV overhead line conductors can be reduced under rain conditions by making their surfaces superhydrophobic. The working environment makes ensuring the longevity of any treatment a major challenge.
Xu Zhang   +7 more
doaj   +2 more sources

Sag and Tension Calculations for High-Voltage Overhead Line Conductors

open access: yesEnergies
Overhead lines are used to transmit electricity from where it is generated to the receiving stations. The correct design of an overhead line affects public safety, because it should ensure the required clearances between conductors and the ground and ...
Marian Kampik   +3 more
doaj   +2 more sources

Improve hardware facilities and work algorithms of overhead contact line remote monitoring systems [PDF]

open access: yesE3S Web of Conferences, 2022
An autonomous diagnostic measuring device, that allows to reduce expenses for the maintenance and the need for highly qualified personnel, is proposed in the article.
Smerdin Aleksandr   +3 more
doaj   +1 more source

Grounding fault location method of overhead line based on dual-axis magnetic field trajectory

open access: yesProtection and Control of Modern Power Systems, 2023
To address the challenges in fault location in distribution networks, the distribution of magnetic field under overhead line and its relationship with three-phase currents are explored in this paper.
Xiaowei Wang   +6 more
semanticscholar   +1 more source

Characteristics of lightning‐induced voltages based on experimental data

open access: yesHigh Voltage, 2021
This paper presents an analysis of 64 lightning‐induced voltage waveforms recorded in an experimental system implemented in the campus of the University of São Paulo, Brazil.
Michele N. N. Santos, Alexandre Piantini
doaj   +1 more source

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

open access: yesJournal 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   +4 more
doaj   +1 more source

Mathematical Model for Determination of EMF and Current Induced in the Loop of Lighting Protection Cable by Magnetic Fields of 220 KV Phase Currents

open access: yesРоссийская Арктика, 2022
The electrical grid of regional power systems primarily uses double-circuit 220 kV overhead power lines to function. This paper provides information on the problem of ice formation on overhead ground wires of 220 kV power lines, including a brief ...
Krotkov E.A.   +2 more
doaj   +1 more source

Overhead Line Ampacity Forecasting With a Focus on Safety

open access: yesIEEE Transactions on Power Delivery, 2022
Predictions of the ampacity of overhead lines can be framed in a general context that aims to make electric grids highly efficient and reliable. In this paper, a methodology is presented that provides ampacity forecasts, which are valid for both the very
R. Alberdi   +4 more
semanticscholar   +1 more source

Nonintrusive overhead‐line current detection using a vertical magnetic‐field sensor array

open access: yesIET Generation, Transmission & Distribution, 2023
With the growing infrastructure for overhead lines, the demand for overhead‐line condition‐monitoring technologies has become increasingly urgent. Traditional current transformers used to measure three‐phase currents are bulky and difficult to install ...
Kun‐Long Chen   +2 more
doaj   +1 more source

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