Results 21 to 30 of about 966,415 (249)
Energies, 2020 Multiple valve unit (MVU), which converts AC to DC and DC to AC, is one of the key elements of high voltage DC (HVDC) transmission. Therefore, the insulation design of MVU against overvoltage should be considered for the stable and reliable operation of ...
Jae-Hong Koo +3 more
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Вестник Научно-исследовательского института железнодорожного транспорта, 2022 Introduction. The article is devoted to the study of the waves propagation of lightning overvoltage impulse in the catenary system of electrified railways.
K. S. Belomestnykh +3 more
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HIGH VOLTAGE DIVIDER DNV-20I FOR BROADBAND INFORMATION-MEASURING SYSTEMS
Надежность и качество сложных систем, 2022 Background. The relevance of the use of high-voltage voltage dividers in information-measuring systems is determined by the wide use of high voltages in various fields of human activity.
A.S. Ilin, I.A. Karchev, A.P. Voronov
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Impulse Characteristics of Highly Wetted Soils [PDF]
Journal of Electrical and Electronics Engineering, 2023 It has been well accepted that under high impulse conditions, ionisation process in soil would occur, causing the ground resistance value to fall to a lower value than that obtained at low voltage low current, RDC.
REFFIN Muhd Shahirad +4 more
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IET Power Electronics, 2022 Phase sequence exchange (PSE) is an emerging emergency control method for power systems. However, PSE will generate impulse current and voltage. In this research, to suppress the impulse of PSE, a phase control method for zero‐current opening and equal ...
Yifan Li +4 more
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Comparative high voltage impulse measurement
Journal of Research of the National Institute of Standards and Technology, 1996 A facility has been developed for the determination of the ratio of pulse high voltage dividers over the range from 10 kV to 300 kV using comparative techniques with Kerr electro-optic voltage measurement systems and reference resistive voltage dividers. Pulse voltage ratios of test dividers can be determined with relative expanded uncertainties of 0.4
FitzPatrick, Gerald J. +1 more
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The analytical method for determining the parameters of impulse overvoltages from atmospheric discharges [PDF]
BakarImpulse generators with RC circuits form the foundation for producing surge voltages used in high-voltage equipment testing. In high-voltage engineering literature, the expressions for impulse voltage waveforms include known parameters of lightning or ...
Marković Nenad +2 more
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Coherence and time-frequency analysis of impulse voltage and current measurements
Journal of Energy in Southern Africa, 2017 The aim of this paper is to point out the advantages of the use of the time-frequency analysis in the digital processing of waveforms recorded in high voltage impulse tests.
Jelena Dikun, Emel Onal
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Superposition of DC voltage and submicrosecond impulses for energization of electrostatic precipitators [PDF]
, 2012 This paper discusses the development of an impulsive microelectrostatic precipitation technology, which uses superposition of submicrosecond high-field pulses and dc electric field.
Given, M +5 more
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Mitigation of Lightning Overvoltages Using STATCOM in Grid-Connected PV Systems [PDF]
Port Said Engineering Research Journal, 2020 Lightning strike causes a large lightning voltage injection into grid-connected PV systems at the point between inverter and transformer. The overvoltage resulting from the lightning-impulse voltage is a major concern for the multiple expensive ...
ibrahim hamdeen +2 more
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