Results 11 to 20 of about 2,547 (216)

Influence of Lightning Current Model on Simulations of Overvoltages in High Voltage Overhead Transmission Systems

open access: yesEnergies, 2020
The analysis of lightning overvoltages generated in electrical power systems has a great meaning for the designers and exploitation engineers because it creates bases for the optimization of construction overhead transmission lines and high voltage ...
Jakub Furgał
doaj   +1 more source

Assessment of the Effects of the Electromagnetic Pulse on the Response of Overhead Distribution Lines to Direct Lightning Strikes

open access: yesIEEE Open Access Journal of Power and Energy, 2021
In the usual practice, the evaluation of overvoltages due to direct lightning strikes to overhead power lines is focused on the representation of the effects of the lightning current injection, whilst the effects of the coupling between the conductors ...
Alberto Borghetti   +4 more
doaj   +1 more source

Study of the Lightning Overvoltage Protection Effectiveness of High Voltage Mixed Overhead Cable Power Lines

open access: yesEnergies, 2021
In this paper, the effectiveness of lightning overvoltage protection of cables in high voltage overhead cable lines has been analyzed. Because of the high overvoltage level, the cables are protected by surge arresters and by metallic sheath earthing ...
Rafał Tarko   +3 more
doaj   +1 more source

Overvoltages transferred from a network of 220 kV to 15.65 kV level of the step-up transformer in HPP 'Bajina Bašta' [PDF]

open access: yesZbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2011
The paper presents the results of research in lightning surge waves and switching overvoltages transferred from a network of 220 kV to the 15.65 kV level of the step-up transformer in HPP 'Bajina Bašta'. Analysis of survey results lead to conclusion that
Vukelja Petar, Mrvić Jovan
doaj   +1 more source

A Methodology to Reduce the Computational Effort in the Evaluation of the Lightning Performance of Distribution Networks

open access: yesAtmosphere, 2016
The estimation of the lightning performance of a power distribution network is of great importance to design its protection system against lightning. An accurate evaluation of the number of lightning events that can create dangerous overvoltages requires
Ilaria Bendato   +4 more
doaj   +1 more source

Frequency of Damage of Low Voltage Apparatus Due to Lightning Flashes to Ground Nearby HV Overhead Lines

open access: yesEnergies, 2022
The paper deals with a simplified approach to evaluate the frequency of damage of low voltage apparatus powered by a in housing HV/LV transformer against overvoltages due to nearby lightning flashes (source of damage S4 according to IEC 62,305 standard).
Tomasz Kisielewicz   +2 more
doaj   +1 more source

Lightning protection of PV systems [PDF]

open access: yes, 2013
Lightning strikes can affect photovoltaic (PV) generators and their installations, involving also the inverter's electronics. It is therefore necessary to evaluate the risk connected to lightning strikes in order to adopt the correct protective measures ...
Pons, Enrico, Tommasini, Riccardo
core   +1 more source

Multi-Stroke Lightning Interaction with Wiring Harness: Experimental Tests and Modelling

open access: yesEnergies, 2021
This paper presents the obtained results of experimental tests and modelling of lightning disturbances that were propagated in a model of aircraft cable bundle and caused by multiple lightning return-strokes interactions.
Kamil Filik   +2 more
doaj   +1 more source

Transient behavior of wind towers grounding systems under lightning strikes [PDF]

open access: yes, 2015
Wind turbines, because of their height and localization, are frequently subject to direct lightning strikes. Thus, the investigation on the performance of their grounding system is of paramount interest for the prediction of the potential threats either ...
ARANEO, Rodolfo, CELOZZI, Salvatore
core   +1 more source

Overvoltages during switching operations of vacuum switching devices [PDF]

open access: yesZbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2013
This paper presents the results of experimental studies of voltage phenomena in the switching operations of vacuum switching devices made by various manufacturers in several different configurations of 6 kV, 10 kV, 20 kV and 35 kV networks.
Vukelja Petar   +3 more
doaj   +1 more source

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