Modeling of Trichel Pulses in the Negative Corona on a Line-to-Plane Geometry

Yin, Han; Zhang, Bo; He, Jinliang; Zhuang, Chijie

doi:10.1109/tmag.2013.2283303

Cited by 27 publications

(15 citation statements)

References 11 publications

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“…[18] Considering all of the specific particles and the relevant reactions in the corona discharge will be a great challenge. [19][20][21][22][23] In order to simplify the present investigation, the widely-used hydrodynamic model [4][5][6][7][8][9][10][11]17,[19][20][21][22][23][24][25] which takes the aforementioned basic processes into account is adopted. The governing equations of the hydrodynamic model are…”

Section: Governing Equationsmentioning

confidence: 99%

“…Recently, Yin et al [11] extended the finite element method with a finite volume method (FEM-FVM) to the simulation of Trichel pulses in a 60-cm long line-to-ground gap. Although their simulation results agreed well with the measurement results, it should be noticed that the corona discharge was assumed to be uniform along the conductor to enable the simula-tion to be performed in two dimensions.…”

Section: Introductionmentioning

confidence: 99%

“…Firstly, to reduce the tedious computation associated with the 2D continuity equations, a fully implicit discretization technique is adopted to discard the restriction of the CFL condition; furthermore, variable time step technique is taken from previous work. [10,11] Secondly, the efficient photoionization (important for positive corona) model [15,16] is first adopted to restore the physical process of corona current pulse production, leading to just a 2.9% increase of computation-cost for the simulation of a 10-cm rod-plane gap; whereas, in previous 2D simulations, photoionization was usually ignored [5,7,10,11] or replaced by a uniform background photoionization [8,17] for its high computation complexity, which was evidenced as "the consideration of photoionization costs nearly 90 percent of the computing time in the whole simulation." [17] The rest of the present paper is organized as follows: firstly, a detailed description of the methodology is presented, which includes the governing equations, boundary conditions, initial conditions, discretization, etc; secondly, the method is applied to a rod-plane example, and a comparison between the simulated results and the measured results is made to verify the validity of the proposed method; thirdly, the convergence of the present method and the physical implications of the results are discussed; finally, some conclusions are derived.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A novel simulation method for positive corona current pulses

Liu¹,

Cui²,

Lu³

et al. 2015

Chinese Phys. B

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A novel two-dimensional (2D) simulation method of positive corona current pulses is proposed. A control-volume-based finite element method (CV-FEM) is used to solve continuity equations, and the Galerkin finite element method (FEM) is used to solve Poisson’s equation. In the proposed method, photoionization is considered by adopting an exact Helmholtz photoionization model. Furthermore, fully implicit discretization and variable time step are used to ensure the time-efficiency of the present method. Finally, the method is applied to a positive rod-plane corona problem. The numerical results are in agreement with the experimental results, and the validity of the proposed method is verified.

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Section: Governing Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A novel simulation method for positive corona current pulses

Liu¹,

Cui²,

Lu³

et al. 2015

Chinese Phys. B

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“…However, in corona inception models, the ionosphere layer is not generally ignored [38][39][40]. Therefore, hydrodynamic models are commonly used to study the space charge and electric field at corona inception [41,42]. For short gap electrodes, Qi and Zhou studied the partial discharge (PD) and found the inception voltage of PD increases as the DC component increasing because of the reverse electric field generated by charge [32,43].…”

Section: Introductionmentioning

confidence: 99%

The Role of Space Charge on Corona Inception Threshold Conditions in Rod-Plane Air Gaps at DC/AC Combined Voltages

Zhou

et al. 2021

IEEE Access

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This work investigates the corona inception voltage and the motion of space charge near a rod-plane electrode under combined DC-AC voltages. For a high AC component, the corona inception voltage of the equivalent negative corona exceeds that of the equivalent positive corona. For a small AC component, the corona inception voltage of the equivalent positive corona exceeds that of the equivalent negative corona. The corona inception voltage decreases with increasing AC component. The charge-motion model based on hydrodynamics is used to analyze the charge motion for different AC/DC voltage ratios. The charge remaining for equivalent negative coronas exceeds that for equivalent positive coronas with high AC components. In addition, the charge remaining for equivalent positive coronas exceeds that of equivalent negative coronas with small AC components. As the AC component decreases, the remaining space charge increases. The results show that space charge tends to "block" corona inception. The more space charge remains, the higher the corona inception voltage is. Therefore, the variation in space charge and the corona inception threshold conditions under combined DC-AC voltage differ from those under only DC or AC voltage.INDEX TERMS Corona discharge, corona inception, DC/AC combined voltages, space charge.

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“…Introduction. There are various types of electrical discharges in nature, e.g., lightning strikes [1], corona discharges around electrodes in non-uniform electric fields [2,3]. Because of the relevance of electrical discharge to everyday life and its growing application in industry, the numerical simulation of electrical discharges has been increasingly attracting attention.…”

mentioning

confidence: 99%

A Fast Tree Algorithm for Electric Field Calculation in Electrical Discharge Simulations

et al. 2018

Self Cite

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Abstract. The simulation of electrical discharges has been attracting a great deal of attention. In such simulations, the electric field computation dominates the computational time. In this paper, we propose a fast tree algorithm that helps to reduce the time complexity from O(N 2 ) (from using direct summation) to O(N log N ). The implementation details are discussed and the time complexity is analyzed. A rigorous error estimation shows the error of the tree algorithm decays exponentially with the number of truncation terms and can be controlled adaptively. Numerical examples are presented to validate the accuracy and efficiency of the algorithm.

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Modeling of Trichel Pulses in the Negative Corona on a Line-to-Plane Geometry

Cited by 27 publications

References 11 publications

A novel simulation method for positive corona current pulses

A novel simulation method for positive corona current pulses

The Role of Space Charge on Corona Inception Threshold Conditions in Rod-Plane Air Gaps at DC/AC Combined Voltages

A Fast Tree Algorithm for Electric Field Calculation in Electrical Discharge Simulations

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