Results 11 to 20 of about 966,415 (249)

Development of a Wideband Precision Electric Field Measuring Sensor

open access: yesSensors, 2023
High-voltage electric field measurement technology has certain applications in electric field measurement of power systems, but due to the limitation of its measurement accuracy and bandwidth, it cannot be used for the measurement of lightning-impulse ...
Zhaozhi Long   +6 more
doaj   +1 more source

Vancomycin-Resistant Enterococcus faecium Sterilization and Conductivity Change by Impulse Voltage

open access: yesMicroorganisms, 2023
Owing to the increased use of antibiotics, drug-resistant strains, including those that are resistant to the antibiotic vancomycin, have emerged, which has become a major problem.
Takahisa Ueno   +2 more
doaj   +1 more source

Evaluation of Lightning Impulse Test by Frequency Response Analysis [PDF]

open access: yes, 2006
In this work are presented the basis for improving the interpretation of transformer lightning impulse test and the development of a graphical user interface system, which allows comparisons of time domain data and frequency response.
Jorge Ramirez   +3 more
core   +3 more sources

On the Characterisations of the Impulse Breakdown in High Resistivity Soils by Field Testing

open access: yesEnergies, 2021
This paper presents experimental results of high-current impulse tests on six ground electrode configurations. A high impulse current generator is employed to inject different magnitudes of current into these rod electrodes, under both positive and ...
Abdul Wali Abdul Ali   +1 more
doaj   +1 more source

Impulse-driven surface breakdown data : a Weibull statistical analysis [PDF]

open access: yes, 2012
Surface breakdown of oil-immersed solids chosen to insulate high-voltage, pulsed-power systems is a problem that can lead to catastrophic failure. Statistical analysis of the breakdown voltages, or times, associated with such liquid-solid interfaces can ...
Given, M   +7 more
core   +4 more sources

A Novel VSG Control Strategy for UPS Voltage Source Inverter with Impulsive Load

open access: yesEnergies, 2022
This paper proposes a novel control strategy to alleviate the impulsive current for Uninterruptible Power Supply (UPS), which is designed based on the theory of virtual synchronous generator (VSG) and dynamic switching method.
Guofeng He   +4 more
doaj   +1 more source

Desain Generator Tegangan Tinggi Impuls 31,4 kV menggunakan Ignition Coil

open access: yesJurnal Elkomika, 2023
ABSTRAK Peralatan pembangkitan tegangan tinggi yang ada sejauh ini masih memerlukan perangkat-perangkat besar dan kompleks. Pada penelitian ini dihasilkan suatu alat pembangkit tegangan tinggi impuls yang menjawab persoalan dimensi dan kompleksitas ...
ABDUL SYAKUR   +3 more
doaj   +1 more source

Electrical Tree Initiation Properties in Cross-Linked Polyethylene Under DC-Impulse Composite Voltages

open access: yesIEEE Access, 2018
DC cables may be subjected to impulse overvoltage during operation, which may cause electrical tree inside the cable insulation. So, it is necessary to investigate the influence of impulse voltage on the insulation of dc cable.
Hechen Liu   +5 more
doaj   +1 more source

Study on the reliability of new kind of ±1 100 Kv DC voltage divider under the action of impulse voltage

open access: yesThe Journal of Engineering, 2019
To meet the special insulation demand of the DC transmission system with the highest voltage in the world, a new kind of ±1 100 kV DC voltage divider is designed.
Wu Shipu   +4 more
doaj   +1 more source

Impact of time parameters of lightning impulse on the breakdown characteristics of oil paper insulation

open access: yesHigh Voltage, 2016
At present, the insulation performances of electrical apparatus under lightning impulse voltages are always evaluated by the withstand test of standard lightning impulse voltage (1.2/50 µs), which is recommended by IEC Standard.
Wenxia Sima   +4 more
doaj   +1 more source

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