Results 81 to 90 of about 3,794 (179)
Fundamental Modeling of the Switching Transition in High-Speed Power Electronics
IEEE AccessRecent advances in semiconductor technology have paved the way for ultra-fast switching capabilities. This increase in switching speed enhances efficiency, power density, and frequency but also increases overvoltage oscillations at the switching node ...
Francois P. Du Toit, Ivan W. Hofsajer
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THE RESONANT OVERVOLTAGE IN NON-SINUSOIDAL MODE OF MAIN ELECTRIC NETWORK
Electrical engineering & Electromechanics, 2018 Purpose. The resonant overvoltage arises in main electrical networks as a result of random coincidence of some parameters of circuit and its mode and it may exist for a relatively long time.
V. G. Kuznetsov +4 more
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New approach to overvoltage protection of power distribution networks
, 2008 U ovoj su radnji izvršene analize novih pristupa u prenaponskoj zaštiti srednjenaponskih elektroenergetskih mreža. Analizirani su nastanci i djelovanja prenapona, te je dan pregled postojećih metoda prenaponske zaštite u srednjenaponskim distribucijskim ...
Bago, Drago
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High Voltage, 2019 High-voltage direct current circuit breakers (HVDC CB) are one of the key technologies of multi-terminal DC systems and DC grids. Different from other equipment that use a large number of power electronic devices, the HVDC CB cannot obtain its power from
Xiangyu Zhang +7 more
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Line commutated converter based high voltage direct current (LCC-HVDC) is the key to large-scale grid connection and long-distance transmission of renewable energy. However, faults such as DC blocking and commutation failure may lead to short-term excess
HUA Zhuhu +5 more
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Mechanism Analysis and Simulation Study of Closing Overvoltage Fault in EMU Circuit Breaker
Chengshi guidao jiaotong yanjiuObjective The overvoltage caused by circuit breaker closing will aggravate the insulation aging of high voltage equipment when EMU (electric multiple units)passes neutral section.
ZHANG Mingrui +2 more
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Optimum reactive power compensation methodology to minimize system overvoltage conditions
, 2017 Sri Lankan Power system has experienced power frequency over voltages at steady state conditions predominantly at New Anuradhapura, New Chilaw and Chunnakam Grid Sub Stations. New Anuradhapura being connected to the lengthiest 220kV transmission lines
Perera, CKS
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IEEE AccessOver the past few years, transmission grid in the USA has seen numerous unintentional tripping events of large-scale inverter based resources (IBRs). These trippings were primarily caused by non-standard settings and certain fault ride through controls ...
Shah Mohazzem Hossain +2 more
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Overvoltage protection in industrial power distribution
, 2017 Sähköverkkojen ylijännitteet aiheuttavat laitevahinkoja ja keskeytyskustannuksia. Kustannuksien vähentämiseksi sähköverkon osia suojataan ylijännitesuojilla, joilla pyritään minimoimaan verkon komponentteihin kohdistuvat vahingot.
Paju, Jussi-Mikko
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, 2014 Hybrid and solid-state breakers offer new possibilities in the power grid by enabling faster switching, and by simplifying dc breaking. However, they consists of expensive power electronic components that are sensitive to overvoltage transients and ...
Saers, R. +3 more
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