A novel simulation method for positive corona current pulses

Liu, Yang; Cui, Xiang; Lu, Tiebing; Li, Xuebao; Wang, Zhenguo; Xiang, Yu; Wang, Xiaobo

doi:10.1088/1674-1056/24/6/065201

Cited by 6 publications

(5 citation statements)

References 26 publications

(54 reference statements)

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“…Their findings were consistent with those of Morrow in terms of positive corona simulation. Many other researchers analyzed the pulses of positive corona or burst pulses [25][26][27][28]. He et al [25] studied burst pulses in the positive half of alternating current corona.…”

Section: Introductionmentioning

confidence: 99%

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Burst pulses for positive corona discharges in atmospheric air: the collective movement of charged species

Peng¹,

Chen²,

Lan³

et al. 2021

Plasma Sci. Technol.

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Positive corona burst pulses are an unstable pulse mode. They appear in a small range of the onset stage, and their current pulses result from the collective movement of charged species. This paper focused on the connections between these pulses and the collective movement of charged species. The movement of species is divided into four parts with respect to time: the (1) initial growth of species, (2) formation and development of the streamer region and negative ion sheath, (3) dead time (the time interval between the pulses), and (4) rapid re-growth of species. The movement of the species in the four parts and the correspondence with the current pulse were analyzed. The numerical results indicated the following: the rapid rising of the species matched the rising edge of the pulses, the streamer region, and negative ion sheath appeared in the falling edge of the primary pulse, and the rapid re-growth of species matched the re-ignition of the pulses. The results were in qualitative agreement with deductions and experimental observations in the literature.

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Section: Introductionmentioning

confidence: 99%

“…Li et al [26] studied the detailed characteristics of positive corona. Liu et al simulated pulses of positive corona in [27]. He et al also proposed a theoretical model based on the movement of the space charged clouds and explained some physical mechanism of the pulses of positive corona with the model [28].…”

Section: Introductionmentioning

confidence: 99%

Burst pulses for positive corona discharges in atmospheric air: the collective movement of charged species

Peng¹,

Chen²,

Lan³

et al. 2021

Plasma Sci. Technol.

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show abstract

“…[2] Theoretical and numerical investigations have also been carried out on the ionic wind. [16][17][18][19][20] Drews et al established a theoretical model that describes the different characteristics of ionic winds in dc corona and ac corona. [21] The EHD process was considered using the momentum-transfer equation, flow continuity equation, and Navier-Stokes equation.…”

Section: Introductionmentioning

confidence: 99%

Characteristics and underlying physics of ionic wind in dc corona discharge under different polarities*

Zhang¹,

Ji²,

Li³

et al. 2019

Chinese Phys. B

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During a dc corona discharge, the ions’ momentum will be transferred to the surrounding neutral molecules, inducing an ionic wind. The characteristics of corona discharge and the induced ionic wind are investigated experimentally and numerically under different polarities using a needle-to-ring electrode configuration. The morphology and mechanism of corona discharge, as well as the characteristics and mechanism of the ionic wind, are different when the needle serves as cathode or anode. Under the different polarities of the applied voltage, the ionic wind velocity has a linear relation with the overvoltage. The ionic wind is stronger but has a smaller active region for positive corona compared to that for negative corona under a similar condition. The involved physics are analyzed by theoretical deduction as well as simulation using a fluid model. The ionic wind of negative corona is mainly affected by negative ions. The discharge channel has a dispersed feature due to the dispersed field, and therefore the ionic wind has a larger active area. The ionic wind of positive corona is mainly affected by positive ions. The discharge develops in streamer mode, leading to a stronger ionic wind but a lower active area.

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“…Many numerical methods have been proposed to simulate the corona current pulses, but most of them were just suited to analyze the corona current pulses in point-to-plane with short inter-electrode gap [15][16][17][18]. Besides, the validity of the existing methods just can be given through comparing the single corona current pulse, and the random nature of the corona discharge cannot be reflected in the simulations.…”

Section: Introductionmentioning

confidence: 99%

The detailed characteristics of positive corona current pulses in the line-to-plane electrodes

Li¹,

Li²,

Zhang³

2018

Plasma Sci. Technol.

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The corona current pulses generated by corona discharge are the sources of the radio interference from transmission lines and the detailed characteristics of the corona current pulses from conductor should be investigated in order to reveal their generation mechanism. In this paper, the line-to-plane electrodes are designed to measure and analyze the characteristics of corona current pulses from positive corona discharges. The influences of inter-electrode gap and line diameters on the detail characteristics of corona current pulses, such as pulse amplitude, rise time, duration time and repetition frequency, are carefully analyzed. The obtained results show that the pulse amplitude and the repetition frequency increase with the diameter of line electrode when the electric fields on the surface of line electrodes are same. With the increase of inter-electrode gap, the pulse amplitude and the repetition frequency first decrease and then turn to be stable, while the rise time first increases and finally turns to be stable. The distributions of electric field and space charges under the line electrodes are calculated, and the influences of inter-electrode gap and line electrode diameter on the experimental results are qualitatively explained.

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A novel simulation method for positive corona current pulses

Cited by 6 publications

References 26 publications

Burst pulses for positive corona discharges in atmospheric air: the collective movement of charged species

Burst pulses for positive corona discharges in atmospheric air: the collective movement of charged species

Characteristics and underlying physics of ionic wind in dc corona discharge under different polarities*

The detailed characteristics of positive corona current pulses in the line-to-plane electrodes

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