Review on ionization and quenching mechanisms of Trichel pulse*

Sun, Anbang; Zou, Xing; Guo, Yulin; He, Yafeng; Zhang, Guanjun

doi:10.1088/1674-1056/abd75d

Cited by 7 publications

(3 citation statements)

References 79 publications

(172 reference statements)

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“…In this simulation, it is possible to notice a region with few negative ions on the symmetry axis and two clouds, one for each side. This toroidal distribution of ions during the discharge has been seen in experiments in [35]. This distribution is also observed in the electron concentration in Fig.…”

Section: Resultssupporting

confidence: 81%

Simulation of Current Pulses and Sound Waves Resulting from Partial Discharges in a Needle-Plane Geometry in Air

Fabris

Silva

2022

J. Microw. Optoelectron. Electromagn. Appl.

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Partial discharges can occur in different types of electric equipment and cause progressive insulation deterioration, so there is interest in monitoring partial discharges for assessing the state of the isolation of an electric system and to predict failures. Techniques to detect partial discharges, such as detecting ultrasonic emission, have been proposed in the literature, but as various effects can co-occur during a discharge, identifying characteristics in sound and pressure waveforms and correlating then with discharge characteristics is difficult. Simulations can assist in these correlations by allowing the isolation of the different phenomena. In this work the drift diffusion model, including photoionization, is coupled with the linearized compressible Navier-Stokes equations to simulate ultrasonic waves produced by partial discharges. Previous works have used the incompressible Navier-Stokes equations, so they can simulate ionic wind produced by the Trichel pulses, but no sound. In the literature, simulations have focused either on streamers or Trichel pulses. In this work both discharges and produced sound waves are successfully simulated for the needle-plane geometry in air. The electric current and charge per pulse are compared with experimental results reported in the literature for the same discharge conditions. The simulations have demonstrated that the sound waves depart from the electrode tip for the Trichel pulses, and for the streamers two sound waves are produced, one from the electrode tip and the other from the whole discharge length. Differences in the wave front with respect to the relative position to the electrode tip were analyzed, showing that near the discharge spot the sound wave is not a spherical wavefront. The sound wave for one of the discharges in the Trichel pulse regime was compared with experimental results in the literature. Results are in good agreement with the experimental data found in the literature. Both current and sound waves were successfully predicted and correlated with the discharge, results that can be used to help in the detection of partial discharges.

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Section: Resultssupporting

confidence: 81%

Simulation of Current Pulses and Sound Waves Resulting from Partial Discharges in a Needle-Plane Geometry in Air

Fabris

Silva

2022

J. Microw. Optoelectron. Electromagn. Appl.

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“…In the whole time range, the discharge light emission is mainly concentrated in the region near the tip of the needle and gradually moves and spreads in a circular shape toward the plate electrode with time, and the brightness changes from weak to bright and then becomes weak. (2) The connection between the microscopic behavior of charged particles and photons during the Trichel discharge is revealed as well as the intrinsic particle evolution mechanism governing the luminescence phenomenon. The two-dimensional hydrodynamic simulation model shows that the size of the ionization region and the interparticle interactions during the discharge are the main factors affecting the Trichel pulse and its photoemission.…”

Section: Discussionmentioning

confidence: 99%

“…Corona discharge is a local self-sustaining discharge of a gaseous medium in a non-uniform electric field and is a low-temperature non-equilibrium plasma discharge process [1][2][3]. In-depth revelation of the corona discharge mechanism is not only beneficial to engineering needs, such as transmission line protection and high-voltage insulation, but also helps to promote research applications and technology development in fields, such as atmospheric pressure discharge plasma [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Experimental and simulation study on luminous characteristics of Trichel discharge in air at picosecond time resolution

et al. 2022

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The optical morphology of discharge is the main characteristic parameter describing the physical process of the discharge, and the luminescence behavior is inextricably linked to the motion behavior of charged particles. Since the Trichel discharge in air is a weak ionization event occurring on the sub‐nanosecond time scale, micron space scale and accompanied by weak luminescence, the current experimental observation means have a low spatial and temporal resolution, which is insufficient to study the details of its luminescence properties clearly. To address this problem, the intensity of light generated by Trichel discharge in air is first measured and resolved in time and space using a constructed ultrafast optical counting and imaging system. At a very high temporal resolution of 55 ps, it is found that both its light emission and current pulse showed a trend of first rapid growth and then slow decline on the time scale of tens of nanoseconds. Later, in order to further investigate the connection between the microscopic behavior of charged particles and photons, a two‐dimensional hydrodynamic simulation model with three components (electrons, positive ions, and negative ions) is developed and the current simulation results are in good agreement with the experimental results. The results show that the size of the ionization region and the interaction between particles in the discharge process are the main factors affecting the Trichel pulse and its photoemission. Electrons play a dominant role in photon generation during the rise time process, while it is the recombination process of positive and negative charges, which contributes the main photons during the fall time process. Finally, it is proposed that the expression of photon flux should be amended to include an additional term responsible for the photons generated due to recombination. The study helps to advance the understanding of the luminescence characteristics and the discharge mechanism of Trichel discharge.

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Trichel Pulse Characteristics of SF6/N2 Gas Mixture Under Power Frequency Voltage

Tao,

Zheng

2023

Lecture Notes in Electrical Engineering

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Review on ionization and quenching mechanisms of Trichel pulse*

Cited by 7 publications

References 79 publications

Simulation of Current Pulses and Sound Waves Resulting from Partial Discharges in a Needle-Plane Geometry in Air

Simulation of Current Pulses and Sound Waves Resulting from Partial Discharges in a Needle-Plane Geometry in Air

Experimental and simulation study on luminous characteristics of Trichel discharge in air at picosecond time resolution

Trichel Pulse Characteristics of SF6/N2 Gas Mixture Under Power Frequency Voltage

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