Analysis of electrical tracking by energy absorption during surface discharge in polymeric materials

Silva, Ricardo F.; Filho, Vitoldo Swinka

doi:10.1109/tdei.2015.005002

Cited by 14 publications

(3 citation statements)

References 6 publications

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“…Common switchgear problems include surface discharges (tracking), corona, and arcing faults, which emit audible waves in the ultrasonic frequency range [9]- [11]. Surface discharge, specifically tracking, is a prevalent issue that can cause erosion and material deterioration due to conductive channels on the surface of materials [12], [13]. This phenomenon generates surface currents that dissipate energy as heat and degrade the material, eventually leading to complete electrical breakdown [14].…”

Section: Introductionmentioning

confidence: 99%

Detecting surface discharge faults in switchgear by using hybrid model

Alsumaidaee,

Koh,

Yaw

et al. 2023

IJEECS

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<span>Switchgear plays a crucial role in power systems, providing protection and control over electrical equipment. However, tracking (surface discharge) can lead to insulation degradation and switchgear failure, necessitating reliable and effective identification of tracking defects. In this paper, we propose a hybrid one-dimension convolutional neural network long short-term memory networks (1D-CNN-LSTM) model as a solution to this problem. Data from both time domain analysis (TDA) and frequency domain analysis (FDA) are utilized for model evaluation. The model achieved error-free accuracy of 100% in both TDA and FDA during the training, validation, and testing phases. The model's performance is further assessed using performance measures and the visualization of accuracy and loss curves. The results show that the hybrid 1D-CNN-LSTM model works well to accurately find and classify surface discharge tracking defects in switchgear. The model offers precise and dependable fault identification, which has the potential to significantly enhance switchgear functionality. By enabling proactive maintenance and timely intervention, the proposed model contributes to the overall reliability and performance of switchgear in power systems. The findings of this research provide valuable insights for the design and implementation of advanced fault detection systems in switchgear applications.</span>

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Section: Introductionmentioning

confidence: 99%

Detecting surface discharge faults in switchgear by using hybrid model

Alsumaidaee,

Koh,

Yaw

et al. 2023

IJEECS

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“…This causes leakage current and triggers dry-band arcing on the SR surface, resulting in the release of a large amount of heat, and degradation of SR. Ultimately, the formation of conductive carbon pathways results in tracking destruction, 5,6 which adversely affects the transmission safety of the electric network. Therefore, the tracking resistance (TR) of SR must be further enhanced.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of tracking resistance of silicone rubber through charge dissipation and radical capture by fluorosilane-grafted iron oxide

Xie

Lai

Huang³

et al. 2023

Journal of Elastomers & Plastics

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Fluorosilane-grafted iron oxide (F-Fe2O3) was prepared via surface grafting reaction between iron oxide and perfluorooctyltriethoxysilane. The effect of F-Fe2O3 on the tracking resistance (TR) of addition-cured liquid silicone rubber (ALSR) was investigated by the inclined-plane test (IPT), surface potential decay test (SPDT), thermogravimetry (TGA), corona aging test and scanning electron microscopy (SEM). F-Fe2O3 delayed the occurrence of the intensive arc discharge and reduced the number of arc discharges. The corona resistance and TR of ALSR were effectively improved. ALSR/F-Fe2O3 with 0.15 phr F-Fe2O3 content passed the IPT at 4.5 kV, showing an erosion mass of 3.17%. The hydrophobicity and thermal stability of ALSR were also enhanced. The SPDT showed that F-Fe2O3 effectively dissipated charge. The results of thermal stability and corona resistance tests revealed that F-Fe2O3 could capture free radicals generated by the oxidation of methyl side groups of ALSR chains and thus inhibit the thermal degradation of ALSR during the arc discharge. Moreover, the charge dissipation by F-Fe2O3 could diminish the accumulation of charges in ALSR and reduce the damage of charges to the chains during arc discharge. Therefore, the TR of ALSR was enhanced.

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“…Progressive degradation of the surface of a solid insulating material by local discharges tend to form conducting or partially conducting paths [5]. Electrical tracking formed on the surface of polymeric materials is characterized by the formation of conductive paths [6]. The formation process of permanent conductive paths along the insulation surface under voltage stress is called tracking [7].…”

Section: Introductionmentioning

confidence: 99%

Recurrence Plot Analysis of Unsatured Polyester Samples Subjected to Contamination

Ersoy¹,

Ispirli²

2018

IU-JEEE

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Polymer materials that are used in outdoor enviroments are exposed to humidity and polution. In addition, some insulation materials installed in water or embeded to slush containing serious pollutants for a long time. These conditions adversely affect the dielectric properties of insulating materials. In this study, the prepared unsaturated polyester (UPE) samples are stored in an ionized water solution for 8, 24, and 168 hours. This ionized water solution is considered to represent the polluted water in the outdoor environments. Further, the dielectric behaviors of the prepared polyester samples are investigated using the inclined plane test (IPT) method, whereas the leakage current data that are recorded during the experiment are analyzed using the recurrence plot (RP) method. The results of applying the inclined plane test on the unsaturated polyester samples depict that the lifetime of the samples decreased with an increase in the period of storage in the ionized water solution. Further, the results of the recurrence plot analysis reveal that the recurrence plot point density also depicted a decrease with an increase in the period of storage in the ionized water solution.

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Analysis of electrical tracking by energy absorption during surface discharge in polymeric materials

Cited by 14 publications

References 6 publications

Detecting surface discharge faults in switchgear by using hybrid model

Detecting surface discharge faults in switchgear by using hybrid model

Enhancement of tracking resistance of silicone rubber through charge dissipation and radical capture by fluorosilane-grafted iron oxide

Recurrence Plot Analysis of Unsatured Polyester Samples Subjected to Contamination

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