Effects of H2O and O2 Impurities on the Trichel Pulses Characteristics of the Negative Point-Plane Corona Discharge in SF6

Qingqing Gao; Xiaohua Wang; Kazimierz Adamiak; Aijun Yang; Dingxin Liu; Chunping Niu; Jiawei Zhang

doi:10.1007/s11090-021-10166-7

Effects of H₂O and O₂ Impurities on the Trichel Pulses Characteristics of the Negative Point-Plane Corona Discharge in SF₆

Qingqing Gao
, Xiaohua Wang
, Kazimierz Adamiak
, Aijun Yang
, Dingxin Liu
, Chunping Niu
, Jiawei Zhang

School of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

The results of numerical simulation of the effects of H₂O and O₂ impurities on the Trichel pulses characteristics in the negative point-plane corona discharge in SF₆ gas at 0.4 MPa is presented in this paper. The H₂O and O₂ contents varied from 200 ppm to 10,000 ppm. The continuity equations for three charged species along with Poisson’s equation were solved simultaneously to obtain the Trichel pulses characteristics in SF₆/H₂O mixtures and SF₆/O₂ mixtures. The reduced ionization coefficient, the reduced attachment coefficient, the electron mobility and the electron diffusion coefficient for SF₆/H₂O and SF₆/O₂ mixtures were determined by solving the two-term Boltzmann equation. The effects of H₂O and O₂ on the current pulses, the distributions of the charged species and the reduced electric field at the instants of the first and second peak pulse, the time-dependent total number of the three charged species in the gap and the reduced electric field at the discharge tip were investigated to determine the sensitivities of the Trichel pulses characteristics of the SF₆ to the H₂O and O₂ impurities.

Original language	English
Pages (from-to)	1101-1119
Number of pages	19
Journal	Plasma Chemistry and Plasma Processing
Volume	41
Issue number	4
DOIs	https://doi.org/10.1007/s11090-021-10166-7
State	Published - Jul 2021

Keywords

Effects of HO and O
Negative corona discharge
Numerical simulation
Point-plane electrodes
Trichel pulses characteristics

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10.1007/s11090-021-10166-7

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title = "Effects of H2O and O2 Impurities on the Trichel Pulses Characteristics of the Negative Point-Plane Corona Discharge in SF6",

abstract = "The results of numerical simulation of the effects of H2O and O2 impurities on the Trichel pulses characteristics in the negative point-plane corona discharge in SF6 gas at 0.4 MPa is presented in this paper. The H2O and O2 contents varied from 200 ppm to 10,000 ppm. The continuity equations for three charged species along with Poisson{\textquoteright}s equation were solved simultaneously to obtain the Trichel pulses characteristics in SF6/H2O mixtures and SF6/O2 mixtures. The reduced ionization coefficient, the reduced attachment coefficient, the electron mobility and the electron diffusion coefficient for SF6/H2O and SF6/O2 mixtures were determined by solving the two-term Boltzmann equation. The effects of H2O and O2 on the current pulses, the distributions of the charged species and the reduced electric field at the instants of the first and second peak pulse, the time-dependent total number of the three charged species in the gap and the reduced electric field at the discharge tip were investigated to determine the sensitivities of the Trichel pulses characteristics of the SF6 to the H2O and O2 impurities.",

keywords = "Effects of HO and O, Negative corona discharge, Numerical simulation, Point-plane electrodes, Trichel pulses characteristics",

author = "Qingqing Gao and Xiaohua Wang and Kazimierz Adamiak and Aijun Yang and Dingxin Liu and Chunping Niu and Jiawei Zhang",

note = "Publisher Copyright: {\textcopyright} 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.",

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AU - Gao, Qingqing

AU - Wang, Xiaohua

AU - Adamiak, Kazimierz

AU - Yang, Aijun

AU - Liu, Dingxin

AU - Niu, Chunping

AU - Zhang, Jiawei

PY - 2021/7

Y1 - 2021/7

N2 - The results of numerical simulation of the effects of H2O and O2 impurities on the Trichel pulses characteristics in the negative point-plane corona discharge in SF6 gas at 0.4 MPa is presented in this paper. The H2O and O2 contents varied from 200 ppm to 10,000 ppm. The continuity equations for three charged species along with Poisson’s equation were solved simultaneously to obtain the Trichel pulses characteristics in SF6/H2O mixtures and SF6/O2 mixtures. The reduced ionization coefficient, the reduced attachment coefficient, the electron mobility and the electron diffusion coefficient for SF6/H2O and SF6/O2 mixtures were determined by solving the two-term Boltzmann equation. The effects of H2O and O2 on the current pulses, the distributions of the charged species and the reduced electric field at the instants of the first and second peak pulse, the time-dependent total number of the three charged species in the gap and the reduced electric field at the discharge tip were investigated to determine the sensitivities of the Trichel pulses characteristics of the SF6 to the H2O and O2 impurities.

AB - The results of numerical simulation of the effects of H2O and O2 impurities on the Trichel pulses characteristics in the negative point-plane corona discharge in SF6 gas at 0.4 MPa is presented in this paper. The H2O and O2 contents varied from 200 ppm to 10,000 ppm. The continuity equations for three charged species along with Poisson’s equation were solved simultaneously to obtain the Trichel pulses characteristics in SF6/H2O mixtures and SF6/O2 mixtures. The reduced ionization coefficient, the reduced attachment coefficient, the electron mobility and the electron diffusion coefficient for SF6/H2O and SF6/O2 mixtures were determined by solving the two-term Boltzmann equation. The effects of H2O and O2 on the current pulses, the distributions of the charged species and the reduced electric field at the instants of the first and second peak pulse, the time-dependent total number of the three charged species in the gap and the reduced electric field at the discharge tip were investigated to determine the sensitivities of the Trichel pulses characteristics of the SF6 to the H2O and O2 impurities.

KW - Effects of HO and O

KW - Negative corona discharge

KW - Numerical simulation

KW - Point-plane electrodes

KW - Trichel pulses characteristics

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DO - 10.1007/s11090-021-10166-7

M3 - 文章

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SN - 0272-4324

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JF - Plasma Chemistry and Plasma Processing

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ER -

Effects of H₂O and O₂ Impurities on the Trichel Pulses Characteristics of the Negative Point-Plane Corona Discharge in SF₆

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