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When it comes to dealing with high voltages or issues of high electric currents, infrastructure security and people’s safety are of paramount importance. These kinds of phenomena have dangerous consequences, therefore studies concerning the effects of lightning are crucial. The normal operation of transmission and distribution systems is greatly affected by lightning, which is one of the major causes of power interruptions: direct or nearby indirect strikes can cause flashovers in overhead transmission and distribution lines, resulting in over voltages on the line conductors. Contributions to this Special Issue have mainly focused on modelling lightning activity, investigating physical causes, and discussing and testing mathematical models for the electromagnetic fields associated with lighting phenomena. In this framework, two main topics have emerged: 1) the interaction between lightning phenomena and electrical infrastructures, such as wind turbines and overhead lines; and 2) the computation of lightning electromagnetic fields in the case of particular configuration, considering a negatively charged artificial thunderstorm or considering a complex terrain with arbitrary topography
Technology: general issues --- lightning --- lightning protection system --- wind turbine blades --- ANSYS workbench --- graphics processing unit (GPU) --- OpenACC (open accelerators) --- finite difference time domain (FDTD) --- lightning magnetic fields --- electromagnetic field --- analytical formula --- corona discharge --- lightning protection --- electromagnetic pulse --- lightning-induced voltages --- numerical codes --- distribution lines --- lightning-induced overvoltages --- grounding modeling --- soil resistivity --- artificial thunderstorm cell --- upward streamer discharges --- electromagnetic radiation spectrum --- wavelet --- transmission line monitoring system --- model element --- simulation --- corona --- lightning surge --- overhead line --- transient calculation --- n/a
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When it comes to dealing with high voltages or issues of high electric currents, infrastructure security and people’s safety are of paramount importance. These kinds of phenomena have dangerous consequences, therefore studies concerning the effects of lightning are crucial. The normal operation of transmission and distribution systems is greatly affected by lightning, which is one of the major causes of power interruptions: direct or nearby indirect strikes can cause flashovers in overhead transmission and distribution lines, resulting in over voltages on the line conductors. Contributions to this Special Issue have mainly focused on modelling lightning activity, investigating physical causes, and discussing and testing mathematical models for the electromagnetic fields associated with lighting phenomena. In this framework, two main topics have emerged: 1) the interaction between lightning phenomena and electrical infrastructures, such as wind turbines and overhead lines; and 2) the computation of lightning electromagnetic fields in the case of particular configuration, considering a negatively charged artificial thunderstorm or considering a complex terrain with arbitrary topography
Technology: general issues --- lightning --- lightning protection system --- wind turbine blades --- ANSYS workbench --- graphics processing unit (GPU) --- OpenACC (open accelerators) --- finite difference time domain (FDTD) --- lightning magnetic fields --- electromagnetic field --- analytical formula --- corona discharge --- lightning protection --- electromagnetic pulse --- lightning-induced voltages --- numerical codes --- distribution lines --- lightning-induced overvoltages --- grounding modeling --- soil resistivity --- artificial thunderstorm cell --- upward streamer discharges --- electromagnetic radiation spectrum --- wavelet --- transmission line monitoring system --- model element --- simulation --- corona --- lightning surge --- overhead line --- transient calculation --- n/a
Choose an application
When it comes to dealing with high voltages or issues of high electric currents, infrastructure security and people’s safety are of paramount importance. These kinds of phenomena have dangerous consequences, therefore studies concerning the effects of lightning are crucial. The normal operation of transmission and distribution systems is greatly affected by lightning, which is one of the major causes of power interruptions: direct or nearby indirect strikes can cause flashovers in overhead transmission and distribution lines, resulting in over voltages on the line conductors. Contributions to this Special Issue have mainly focused on modelling lightning activity, investigating physical causes, and discussing and testing mathematical models for the electromagnetic fields associated with lighting phenomena. In this framework, two main topics have emerged: 1) the interaction between lightning phenomena and electrical infrastructures, such as wind turbines and overhead lines; and 2) the computation of lightning electromagnetic fields in the case of particular configuration, considering a negatively charged artificial thunderstorm or considering a complex terrain with arbitrary topography
lightning --- lightning protection system --- wind turbine blades --- ANSYS workbench --- graphics processing unit (GPU) --- OpenACC (open accelerators) --- finite difference time domain (FDTD) --- lightning magnetic fields --- electromagnetic field --- analytical formula --- corona discharge --- lightning protection --- electromagnetic pulse --- lightning-induced voltages --- numerical codes --- distribution lines --- lightning-induced overvoltages --- grounding modeling --- soil resistivity --- artificial thunderstorm cell --- upward streamer discharges --- electromagnetic radiation spectrum --- wavelet --- transmission line monitoring system --- model element --- simulation --- corona --- lightning surge --- overhead line --- transient calculation --- n/a
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This book is a collection of recent publications from researchers all over the globe in the broad area of high-voltage engineering. The presented research papers cover both experimental and simulation studies, with a focus on topics related to insulation monitoring using state-of-the-art sensors and advanced machine learning algorithms. Special attention was given in the Special Issue to partial discharge monitoring as one of the most important techniques in insulation condition assessment. Moreover, this Special Issue contains several articles which focus on different modeling techniques that help researchers to better evaluate the condition of insulation systems. Different power system assets are addressed in this book, including transformers, outdoor insulators, underground cables, and gas-insulated substations.
artificial neural network --- simulation --- high-frequency --- artificial flashover tests --- wide bandgap power modules --- tracking --- electrical field strength --- fast-rise square wave voltages --- FDTD simulation --- cable joint --- corona discharge --- feature selection --- post insulator --- earthing systems --- wind speed --- surface discharge --- oil/paper insulation --- oil-paper insulation --- high-magnitude currents and impulse polarity --- UFVM --- Tettex 9520 --- electrical tree --- flashover characteristics --- composite insulator --- partial discharge --- numerical modeling --- saline mechanism --- thermal parameters --- space charge density --- seasonal --- ion flow field --- denoising --- DDX 9121b --- temperature --- transformer asset management --- cavity discharge --- space/interface charge --- insulation health index --- heat transfer model --- leakage current --- machine learning --- partial discharges (PD) --- RF signal --- flashover --- high impulse conditions --- grounding electrodes --- generalized finite difference time domain --- curve fitting --- grounding --- plasma discharge --- outdoor insulators --- flashover dynamic model --- wavelet transform --- degradation --- thermal properties --- bipolar charge transport model --- UHF sensor --- cable --- random walk theory --- tracking test setup --- GIL --- pressure --- modelling --- non-uniform pollution between windward and leeward sides --- calibrator --- secondary arc --- polymeric insulation --- optical-UHF integrated detection --- shoreline --- dry band arcing --- photoelectric fusion pattern --- DDX 8003 --- XLPE --- silicone gel --- partial discharge modeling --- electric field analysis --- NSCT --- electrode’s geometry --- gas --- Comsol Multiphysics --- fast-impulses --- laying modes --- ageing --- cable ampacity --- residual resistance formulation --- finite element analysis --- thermal effect --- hydrophobicity --- soil resistivity --- charge simulation method --- short-circuit discharge --- dry band formation
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