Study of Corona Configurations under DC Conditions and Recommendations for an Identification Test Plan

Madhar, Saliha Abdul; Mráz, Petr; Mor, Armando Rodrigo; Ross, Robert T.

doi:10.1016/j.ijepes.2020.105820

Cited by 13 publications

(9 citation statements)

References 12 publications

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“…Many studies have reported that corona discharges are indirectly generated from the cable or its termination but may originate from the switchgear and cable/terminal hardware connection [9]. Many researchers [20], [22]- [24] used a needle or electrode as a sharp point in their experiments to analyse the characteristics of corona discharges in XLPE cables. The shape of the electrodes under HV stress enormously influences the corona discharge characteristics at low inception voltage.…”

Section: Figure 5 Example Of Measurement Results Of Corona Discharge Display On Sinusoidalmentioning

confidence: 99%

“…The sharp points of the electrode record a higher maximum charge magnitude than spherical and flat electrodes [25]. A.Madhar et al [20] investigated four different corona configurations under DC stress from the device under test using needle-plate electrodes. They discussed the discharge patterns and physics for each configuration according to the voltage and protrusion polarity.…”

Section: Figure 5 Example Of Measurement Results Of Corona Discharge Display On Sinusoidalmentioning

confidence: 99%

“…These studies indicate that power cables are easily affected by surrounding factors and not only by the cable itself or its termination. The PD phenomena in MV cables can be categorized as corona discharge, surface discharge, internal discharge, and discharge by electrical treeing [18]- [20], depending on their location. The fundamental theory of PD source should be apparent and intelligible before conducting a PD classification study.…”

Section: Types Of Pd In Xlpe Cablementioning

confidence: 99%

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Partial Discharges Classification Methods in XLPE Cable: A Review

et al. 2021

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Partial discharge (PD) signal classification analysis on cross-linked polyethylene (XLPE) cables is complex, requiring a comprehensive understanding of the characteristics of PD patterns. In the realm of high-voltage electrical insulation, PD pattern characteristics, such as PD charge and inception voltage, are essential as assessment criteria in diagnostics systems using PD classifiers. This paper provides a review of various PD patterns and classifiers used by previous researchers, specifically for XLPE cables. In addition, the differences of the research on various sensor development based on PD detection in the past 27 years are also discussed. The repeatability, recognition accuracy, recognition speed, and effect of feature sizes on each PD classification method are reviewed and explained. The review indicates that the pattern recognition for PD signal using artificial neural network (ANN) exhibits better performance in terms of accuracy and repeatability than the other methods, and the reduction of feature size does not affect the accuracy of ANN.INDEX TERMS Partial discharge (PD), cross-linked polyethylene (XLPE) cable, solid insulator, pattern recognition, feature extraction, artificial neural network (ANN)

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Section: Figure 5 Example Of Measurement Results Of Corona Discharge Display On Sinusoidalmentioning

confidence: 99%

Section: Figure 5 Example Of Measurement Results Of Corona Discharge Display On Sinusoidalmentioning

confidence: 99%

Section: Types Of Pd In Xlpe Cablementioning

confidence: 99%

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Partial Discharges Classification Methods in XLPE Cable: A Review

et al. 2021

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“…The large streamer pulses are observed at the last stage of the discharge (Figure 3c). The discharge streamers penetrate into the gas gap in the strong electric field, which is believed to be incited by energetic α-rays or properly timed ions [50][51][52].…”

Section: Corona Dischargesmentioning

confidence: 99%

“…The ionization of O 2 by electron (Reaction (2)) dominates the ionization reaction in the lower field because its energy for ionization is less than that for nitrogen ionization (Reaction (1)). Electrons attach to a neutral O 2 by three body reaction (Reaction (3)) create a negative space charge at a distance from the electrode tip [52]. The increased rate of removal of negative charges and the reduced rate of generation of negative ions due to detachment effect in high field is responsible for the corona discharge in the pulsed mode [53].…”

Section: Corona Dischargesmentioning

confidence: 99%

On the charged aerosols generated by atmospheric pressure non‐equilibrium plasma

Zhang

et al. 2020

High Voltage

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Recently, charged aerosols are used widely in many applications, such as fog elimination, inactivation of airborne viruses and so on. Atmospheric pressure nonequilibrium plasma (APNP) have become an efficient way to generate charged aerosols. Except the traditional pin-plate or wire-plate APNP sources, the new APNP sources such as large scale corona discharge system and air plasma jet array are introduced. These sources can increase the ion density in open air and generate adjustable large plasma plume, which are helpful in increasing the charging efficiency on aerosols. Although the interactions between plasma and aerosols is quite complicated, the preliminary study suggests that the diffusion charging dominates aerosols below 0.1 μm, field charging dominates aerosols larger than 1 μm, and the photo charging also contributes to aerosols charging. These reactive charged aerosols have shown their potential in the artificial rain enhancement, biomedicine, and material processing. Finally, challenges and opportunities for theoretical, experimental, and application research in related cross-disciplinary areas are presented to stimulate critical discussions and collaborations in the future. Yanzhe Zhang and He Cheng contributed equally to this work. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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