Results 31 to 40 of about 259,888 (302)

Partial discharges measurement by UHF method

open access: yesZbornik radova Elektrotehnicki institut Nikola Tesla, 2020
The unconventional UHF (Ultra High Frequency) method of measuring partial discharges (PD) is based on measuring electromagnetic waves (EM) in the UHF frequency band (300-3000) MHz, using appropriate antennas. This method is unconventional, but is widely accepted due to the possibility of application in plants in the online mode and quick review ...
Malešević Nevena   +3 more
openaire   +2 more sources

Long-pulse KrCl laser with a high discharge quality \ud [PDF]

open access: yes, 2007
The discharge quality and optimum pump parameters of a long-pulse high-pressure gas discharge excited KrCl laser are investigated. A three-electrode prepulse–mainpulse excitation circuit is employed as pump source.
Bastiaens, H.M.J.   +4 more
core   +3 more sources

Development of an Industrial Partial Discharge Calibrator and Its Performance Tests

open access: yesIEEE Access
In industrial electromechanical manufacturing, ensuring the accuracy of electrical partial discharge measurements is crucial for the reliability and efficiency of electrical power systems.
Ismail Karaman, Ali Ajder, Ismail Nakir
doaj   +1 more source

Signal Processing in Partial Discharge Measurement [PDF]

open access: yesMetrology and Measurement Systems, 2010
The paper presents traditional analogue and digital techniques in partial discharge measurement. The discharge current pulses are measured from high voltage machin es like power plant generators and transformers. The presented modern digital techniques are suitable for all measurements where impulse energy will be calculated.
Josef Vedral, Martin Kříž
openaire   +1 more source

Partial discharge behavior and insulation failures detection in electrical devices subjected to impulse voltage excitation

open access: yesInternational Journal of Electrical Power & Energy Systems
Partial discharges can occur within an insulating system due to flaws in the material and can cause continuous deterioration until a full breakdown occurs.
Manuel Eckert   +3 more
doaj   +1 more source

Assessing the ecological relevance of organic discharge limits for constructed wetlands by means of a model-based analysis [PDF]

open access: yes, 2018
Polder watercourses within agricultural areas are affected by high chemical oxygen demand (COD) and biological oxygen demand (BOD5) concentrations, due to intensive farming activities and runoff. Practical cases have shown that constructed wetlands (CWs)
Boets, Pieter   +5 more
core   +3 more sources

Partial Discharge Measurements in a High Voltage Gas Insulated Transmission Line Insulated with CO2

open access: yesEnergies, 2020
This paper uses practical experimentation to analyse the effect of replacing SF6 with pure CO2 in conventional gas insulated transmission line sections by studying partial discharge measurements taken with applied voltages up to 242 kV (rms). The results
Phillip Widger   +5 more
doaj   +1 more source

Partial discharge behavior under operational and anomalous conditions in HVDC systems [PDF]

open access: yes, 2017
Power cables undergo various types of overstressing conditions during their operation that influence the integrity of their insulation systems. This causes accelerated ageing and might lead to their premature failure in severe cases.
Azizian Fard, M.   +3 more
core   +3 more sources

Influence of Dielectric Liquid Type on Partial-Discharge Inception Voltage in Oil-Wedge-Type Insulating System under AC Stress

open access: yesEnergies, 2023
This article describes the results of laboratory tests on an oil-wedge-type electrode system, which were supplemented by FEM (finite element method) simulations. The studies were focused on the comparison of the partial-discharge inception voltage (PDIV)
Bartlomiej Pasternak, Pawel Rozga
doaj   +1 more source

Laboratory and field partial discharge measurement in HVDC power cables [PDF]

open access: yes, 2015
A range of experimental and field measurements of partial discharge (PD) activity under high voltage direct current (HVDC) conditions have been conducted with the goal of developing effective monitoring techniques for PD in HVDC cables and ancillary ...
Awodola, Joseph   +9 more
core  

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