Results 21 to 30 of about 7,191 (312)
Feasibility analysis of neutral grounding by small reactor of HVDC converter transformer
Energy Reports, 2022 Nowadays, the scale of power grid is remarkably increasing and there is a continuous reinforcement of AC–DC hybrid systems. Thus, the single-phase grounding fault currents on the AC grid-side of rectifier and inverter stations increase significantly ...
Ensheng Zhao +5 more
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System configuration, fault detection, location, isolation and restoration: a review on LVDC Microgrid protections [PDF]
, 2019 Low voltage direct current (LVDC) distribution has gained the significant interest of research due to the advancements in power conversion technologies. However, the use of converters has given rise to several technical issues regarding their protections
Bououden +11 more
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The Earth systems and Earth science informatics [PDF]
Earth Science Informatics, 2008 Earth scientists collect, store, manage, process, and organize data about the different components of the Earth system, and about natural and simulated processes. The transition from data to information is achieved through computation, visualization, and other processes that make the data more meaningful to the scientists.
openaire +1 more source
The Lehtinen–Pirjola method modified for efficient modelling of geomagnetically induced currents in multiple voltage levels of a power network [PDF]
Annales Geophysicae, 2022 The need for accurate assessment of the geomagnetic hazard to power systems is driving a requirement to model geomagnetically induced currents (GIC) in multiple voltage levels of a power network.
R. J. Pirjola +4 more
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Transient behavior of wind towers grounding systems under lightning strikes [PDF]
, 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
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Effect of Impulse Polarity on a New Grounding Device with Spike Rods (GDSR)
Energies, 2020 The characterizations of grounding systems subjected to high impulse conditions are known to be dependent on the polarity, current to peak time and discharge time, as well as the electrical properties of the soil, and the grounding electrodes themselves.
Abdul Wali Abdul Ali +2 more
doaj +1 more source
An equivalent circuit for the evaluation of cross-country fault currents in medium voltage (MV) distribution networks [PDF]
, 2018 A Cross-Country Fault (CCF) is the simultaneous occurrence of a couple of Line-to-Ground Faults (LGFs), affecting different phases of same feeder or of two distinct ones, at different fault locations.
Gatta, Fabio Massimo +3 more
core +1 more source
Earth Observing System AM1 mission to Earth [PDF]
IEEE Transactions on Geoscience and Remote Sensing, 1998 In 1998, NASA launches EOS-AMI, the first of a series of the Earth Observing System (EOS) satellites. EOS will monitor the evolution of the state of the earth for 18 years, starting with the morning observations of EOS-AM1 (10:30 a.m. equatorial crossing time).
Kaufman, Yoram J. +5 more
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Measurement + Control, 2017 This paper addresses accepted practice for the earthing of control systems in a variety of environments and is intended to give control and instrument technicians and engineers a basic understanding of the power supply earthing systems to which their ...
David W Otterson
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Energies, 2020 In a recently published work, the characteristics of a new grounding device with spike rods (GDSR) with various arrangements of ground electrodes under high magnitude impulse currents (up to 16 kA), was investigated.
Abdul Wali Abdul Ali +4 more
doaj +1 more source