Results 151 to 160 of about 17,054,748 (190)
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High Latitude Magnetic Impulse Events (MIEs): Polarization Peculiarities and Excitation Conditions
Izvestiya, Physics of the Solid Earth, 2018Polarization characteristics (polarization type, ellipticity e, tilt angle τ of the polarization ellipse’s major axis) of high-latitude magnetic impulse events (MIEs) observed at the latitude of the dayside polar cusp are studied. It is established that all impulses are elliptically polarized, being right-polarized in 43% of cases (R-type) and left ...
N. A. Kurazhkovskaya, B. I. Klain
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Insulation performance of vacuum interrupter after high frequency voltage impulses conditioning
2015 3rd International Conference on Electric Power Equipment – Switching Technology (ICEPE-ST), 2015The conditioning is widely used to enhance the insulation performance of vacuum interrupter, such as current conditioning and spark conditioning. In this paper, we compared the conditioning performance between traditional ones and high frequency voltage impulses conditioning method with their conditioning parameters, such as conditioning voltage ...
Weigang Feng +3 more
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2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV), 2016
Vacuum Interrupters (VI's) which are the product of choice at medium voltages for interruption of fault currents are being actively considered and applied at transmission levels also. As the voltage levels increases, so do the stresses. Hence, the high voltage withstand performance of the vacuum interrupter becomes extremely significant and demands ...
Sandeep Kulkarni +3 more
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Vacuum Interrupters (VI's) which are the product of choice at medium voltages for interruption of fault currents are being actively considered and applied at transmission levels also. As the voltage levels increases, so do the stresses. Hence, the high voltage withstand performance of the vacuum interrupter becomes extremely significant and demands ...
Sandeep Kulkarni +3 more
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High density impulsive Noise removal using decision based iterated conditional modes
2015 International Conference on Signal Processing, Computing and Control (ISPCC), 2015Salt and Pepper Noise is very common during transmission of images through a noisy channel or due to impairment in camera sensor module. For noise removal, methods have been proposed in literature, with two stage cascade various configuration. These methods, can remove low density impulse noise, are not suited for high density noise in terms of visible
Arjun Singh Chauhan, Vineet Sahula
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Journal of Physics D: Applied Physics, 2023
Abstract We report several effects found in reactive bipolar high-power impulse magnetron sputtering (abbreviated as bipolar HiPIMS or BPH) discharges at the substrate level. The role of the negative peak current and the positive pulse voltage, U
Michiels, Matthieu +5 more
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Abstract We report several effects found in reactive bipolar high-power impulse magnetron sputtering (abbreviated as bipolar HiPIMS or BPH) discharges at the substrate level. The role of the negative peak current and the positive pulse voltage, U
Michiels, Matthieu +5 more
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2015 IEEE Eindhoven PowerTech, 2015
High voltage bushing forms an essential part of a power transformer and its insulation condition is of high importance in a transformer's reliability. Transformer failure statistics indicate considerable contribution from bushing failures, which makes the monitoring of power transformer bushings essential.
Roya Nikjoo, Nathaniel Taylor, Hans Edin
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High voltage bushing forms an essential part of a power transformer and its insulation condition is of high importance in a transformer's reliability. Transformer failure statistics indicate considerable contribution from bushing failures, which makes the monitoring of power transformer bushings essential.
Roya Nikjoo, Nathaniel Taylor, Hans Edin
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IEEE Transactions on Plasma Science, 2016
The objective of this paper is to investigate an influence of high-frequency high-voltage impulse conditioning on the back-to-back capacitor bank switching performance of vacuum interrupters (VIs). Nine identical 7.2-kV VIs were tested by 80 CO operations after the proposed conditioning. Test inrush currents were set to 0-, 2-, and 5-kA peak.
Yingyao Zhang +6 more
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The objective of this paper is to investigate an influence of high-frequency high-voltage impulse conditioning on the back-to-back capacitor bank switching performance of vacuum interrupters (VIs). Nine identical 7.2-kV VIs were tested by 80 CO operations after the proposed conditioning. Test inrush currents were set to 0-, 2-, and 5-kA peak.
Yingyao Zhang +6 more
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Electrical Engineering, 2016
In a previously published work, performances of three practical earthing systems consists of 2, 3 and 4 rod-bed electrodes buried at the same site, thus the same soil resistivity were investigated. It was found that the degree of reduction of the earth resistance values is the highest in the poor earthing systems (2 rod electrodes).
Abdullah, Saleha +2 more
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In a previously published work, performances of three practical earthing systems consists of 2, 3 and 4 rod-bed electrodes buried at the same site, thus the same soil resistivity were investigated. It was found that the degree of reduction of the earth resistance values is the highest in the poor earthing systems (2 rod electrodes).
Abdullah, Saleha +2 more
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AIAA Journal, 2015
A tunable diode laser-based H2O absorption diagnostic has been developed to characterize transient phenomena within the Stanford Expansion Tube Flow Facility. A measurement rate of 25 kHz was achieved to identify and investigate transient flow structures within the ∼600 μs facility test time.
Christopher L. Strand, Ronald K. Hanson
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A tunable diode laser-based H2O absorption diagnostic has been developed to characterize transient phenomena within the Stanford Expansion Tube Flow Facility. A measurement rate of 25 kHz was achieved to identify and investigate transient flow structures within the ∼600 μs facility test time.
Christopher L. Strand, Ronald K. Hanson
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Effect of Enhancement Materials When Mixed with Sand Under High Impulse Conditions
2006 IEEE 8th International Conference on Properties and applications of Dielectric Materials, 2006To date, there is no data describing the characteristics of enhancement materials mixed with soils under impulse conditions are published. In this research, it is aimed to investigate the characteristics of enhancement materials, copper sulphate (CuSO4 ) and sodium chloride (NaCl) mixed with soils under impulse ...
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