Results 21 to 30 of about 10,554 (149)

Influence of Insulating Material Properties on Partial Discharges at DC Voltage

open access: yesEnergies, 2020
Understanding a partial discharge mechanism at direct current (DC) is an actual research topic that requires both modeling, simulations and measurements.
Marek Florkowski
doaj   +1 more source

Characterization of PDIV, PDEV, and RPDIV in Insulated Wires Under Unipolar Repetitive Square Wave Excitations for Inverter-Fed Motors

open access: yesIEEE Access, 2023
The behaviour of partial discharge inception voltage (PDIV), partial discharge extinction voltage (PDEV) and repetitive partial discharge inception voltage (RPDIV) as a function of exposure/poling time under unipolar repetitive square wave excitations at
Hadi Naderiallaf   +2 more
doaj   +1 more source

Partial discharges characteristics study in XLPE cable insulation with multiple defects [PDF]

open access: yesОмский научный вестник, 2021
The paper simulates the electric field intensity picture in the cable with one and several defects. Modeling has shown that the presence of several closely spaced defects does not lead to an increase in the electric field intensity in comparison with
I. V. Komarov   +2 more
doaj   +1 more source

The Practical Application of Bio-Inspired PMA for the Detection of Partial Discharges in High Voltage Equipment

open access: yesSensors, 2023
In this paper, the practical application of a bio-inspired antenna for partial discharge (PD) detection in high voltage equipment was evaluated in order to validate the efficiency of using this technology for PD monitoring purposes.
Josiel Cruz   +7 more
doaj   +1 more source

Partial Discharge Data Matching Method for GIS Case-Based Reasoning

open access: yesEnergies, 2019
With the accumulation of partial discharge (PD) detection data from substation, case-based reasoning (CBR), which computes the match degree between detected PD data and historical case data provides new ideas for the interpretation and evaluation of ...
Jiejie Dai   +5 more
doaj   +1 more source

Time-Frequency Analysis of Partial Discharge Current Pulses in Different Gas Environment under Lightning Impulse

open access: yesMeasurement Science Review, 2020
This paper deals with a time-frequency analysis of the measured partial discharge (PD) currents in different insulation gases. These gas environments consist of a pure SF6 (sulphur-hexafluoride) and sulphur-hexafluoride and nitrogen (1 % SF6 + 99 % N2 ...
Arikan Kemal, Önal Emel, Şeker Serhat
doaj   +1 more source

Multiple detections of insulation defects partial discharge in gas-insulated equipment

open access: yesFrontiers in Energy Research, 2022
Gas-insulated equipment is an important part of the power system owing to its advantages of small footprint, large transmission capacity, and high reliability.
Fanjun Kong   +7 more
doaj   +1 more source

Influence of surface discharge on the deterioration characteristics of ethylene‐propylene rubber cable insulation under alternating current high voltage

open access: yesIET Science, Measurement & Technology, 2022
To investigate partial discharge‐induced deterioration characteristics of ethylene‐propylene rubber (EPR) cable insulation under repeated alternating current (AC) voltage on high‐speed trains, an experimental platform with a column‐plate EPR insulation ...
Longlei Bai   +6 more
doaj   +1 more source

Analysis of Cavity PD Characteristics’ Sensitivity to Changes in the Supply Voltage Frequency

open access: yesEnergies, 2021
The supply voltage frequency effect on partial discharge (PD) phenomena has continued to draw research interest. Although most high voltage equipment operates at power frequency (50/60 Hz), testing is often done at different frequencies for various ...
Tapiwa Venge, Cuthbert Nyamupangedengu
doaj   +1 more source

Evaluation of Erosion Discharge Characteristics in Inclined Plane Tracking and Erosion Tests on Silicone Rubber under AC and DC Voltages

open access: yesEnergies, 2021
This paper investigates partial discharge (PD) characteristics that lead to the erosion of silicone rubber (SR) polymer under AC stress and DC stress of both polarities.
Valeria Pevtsov   +2 more
doaj   +1 more source

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