Contribution of Design Parameters of SiR Insulators to Their DC Pollution Flashover Performance

Abbasi, Ahmad; Shayegani, A. A.; Niayesh, Kaveh

doi:10.1109/tpwrd.2013.2285223

Cited by 20 publications

(6 citation statements)

References 16 publications

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“…Eventually, the temperature in these areas approaches boiling point, and rapid evaporation of the moisture occurs producing dry areas. The development of the dry areas is independent of the insulator type, something that has also been verified experimentally, since the insulator's body diameter differs very little from one type to another (Abbasi et al, 2014). Pollution flashover is a very complex problem due to several reasons such as modelling difficulties of the insulator complex shape, different pollution density at different regions, non-homogenous pollution distribution on the surface of insulator and unknown effect of humidity on the pollution (Gorur and Olsen, 2006).…”

Section: Introductionmentioning

confidence: 54%

Artificial Neural Networks (ANN) and Genetic Algorithm Modeling and Identification of arc Parameter in Insulators Flashover Voltage and Leakage Current

Belhouchet

Bayadi

Bendib

2019

IJCAET

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Section: Introductionmentioning

confidence: 54%

Artificial Neural Networks (ANN) and Genetic Algorithm Modeling and Identification of arc Parameter in Insulators Flashover Voltage and Leakage Current

Belhouchet

Bayadi

Bendib

2019

IJCAET

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“…(4) Light emission from surface discharges can be quantitatively analyzed as the indicator and classification index of propagation and strength of surface discharges. It shows a decreasing tendency in the discharge luminous intensity as particle size is increased and particle amount is decreased.…”

Section: Discussionmentioning

confidence: 99%

“…Outdoor insulators are essential components in the structure and operation of transmission and distribution lines and substations, providing both mechanical connection and electrical insulation for conductors at different voltage levels or for conductors to the ground [1][2][3][4]. From the viewpoint of actual operations, due to direct exposure to atmospheric environments, the variation of aerial components, including both gaseous and solid pollutants, inevitably influences insulator performance.…”

Section: Introductionmentioning

confidence: 99%

Influence of Fine Metal Particles on Surface Discharge Characteristics of Outdoor Insulators

Liu

Xia

et al. 2016

Energies

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Abstract:Focusing on the influence of fine metal particles on the insulation characteristics of outdoor insulators, spherical micrometer-level iron powders were used to represent fine metal particles of different parameters on a polymer insulator specimen surface. Dynamic movement and lift-off behavior of fine particles, as well as the triggered surface discharges under AC voltage were investigated in a uniform electric field under different experimental conditions. The results reveal that the inception, propagation and intensity of surface discharges are significantly affected by the particle parameters, including particle size, amount and distributing characteristic. Based on the measurement of light emission during the flashover process using a high-speed camera, the process of surface discharge to flashover triggered by the fine metal particles were investigated to obtain a relationship between flashover voltage, discharge light intensity and particle parameters. It is suggested that particle size smaller than 28 µm and particle amount more than 40 mg in contact with the non-uniform distribution can cause a significant distortion and intensification of the electric field resulting in a higher risk of surface discharges leading to flashover. Such investigations can enhance the operating reliability of outdoor insulators subjected to these conditions.

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“…According to statistics, the consumption of transmission line composite insulators in China has reached 9 million by 2016. Compared with hydrophilic porcelain and glass insulators, the flashover voltage of hydrophobic composite insulators is obviously higher [10]- [12]. However, due to the wetness of pollution layers caused by high humidity weather such as fog and so on, flashover of composite insulators still exists [13].…”

Section: Introductionmentioning

confidence: 99%

Impact of Hydrophobicity on Wetting Characteristics of Composite Insulators

Hao

Yang

et al. 2020

IEEE Access

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To perfect the wetting mechanism of hydrophobic insulators, it is urgent to explore the impact of hydrophobicity on wetting characteristics of the pollution layer of composite insulators. In this paper, the wetting test of the hydrophobic pollution layer was carried out in artificial hot fog. The local surface conductivity of the pollution layer with different hydrophobicity were measured. The test results show that the local surface conductivities of different hydrophobic pollution layers are obviously different at the same wetting time. For researching the regularity of wetting process in greater detail, three characteristic quantities were proposed to represent the wetting characteristics. They are the duration of local surface conductivity close to zero (DLSCCZ), the saturated wetting time (SWT) and the maximum value of local surface conductivity (MVLSC). With the enhancement of hydrophobicity of the pollution layer, DLSCCZ and SWT increase, while MVLSC and the growth velocity of local surface conductivity both decrease.

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Contribution of Design Parameters of SiR Insulators to Their DC Pollution Flashover Performance

Cited by 20 publications

References 16 publications

Artificial Neural Networks (ANN) and Genetic Algorithm Modeling and Identification of arc Parameter in Insulators Flashover Voltage and Leakage Current

Artificial Neural Networks (ANN) and Genetic Algorithm Modeling and Identification of arc Parameter in Insulators Flashover Voltage and Leakage Current

Influence of Fine Metal Particles on Surface Discharge Characteristics of Outdoor Insulators

Impact of Hydrophobicity on Wetting Characteristics of Composite Insulators

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