A Three-electrode gas arrester for low voltage isolation coordination

Nedić, Teodora; Janićijević, Aco; Stanković, Koviljka; Kartalović, Nenad

doi:10.1016/j.ijepes.2020.106002

Cited by 3 publications

(1 citation statement)

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“…On one hand, corona discharges are harmful to electrical components as they cause power energy loss, audible noise, electrode corrosion and radio interference [2]. On the other hand, they are widely applied in industrial applications such as ozone production, surface treatment, pollution control and so on [3][4][5][6]. Depending on specific configurations, corona discharges can * Authors to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Revisiting the theory of positive glow corona with a comprehensive kinetic scheme

Xiao¹,

Liu²,

He³

et al. 2021

J. Phys. D: Appl. Phys.

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The theory of positive glow corona is revisited by performing a detailed simulation based on the fluid model with a comprehensive kinetic scheme (CKS). The kinetic scheme includes 28 species, 127 chemical reactions for N2/O2 mixture. The simulation results are compared with that from an averaged kinetic scheme (AKS) which considers only five species and seven reactions. The two models give similar predictions in terms of discharge current. However, several differences in details of the results bring new physical insights to the theory of positive glow corona. It is shown that, the model with the AKS underestimates the detachment effect that plays an important role in positive glow corona discharge. Moreover, the wave-front of the current pulse calculated by the model with the CKS has a smaller steepness, a lower peak-to-peak value, and a longer rise time. These results are in better agreement with the experimental measurement reported in the literature. It is also found that the positive space charge of glow corona is dominated by O2 + in the ionization layer and by O4 + in the drift region far away from the anode. Negative ions are produced in the ionization layer close to the anode and the main species are O− and O3 −.

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