Formation mechanism of streamer discharges in liquids: a review

Sun, Anbang; Huo, Chao; Zhuang, Jie

doi:10.1049/hve.2016.0016

Cited by 98 publications

(76 citation statements)

References 72 publications

(94 reference statements)

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“…Research in [12,29,30] suggested that both electronic and gaseous processes at streamer tips are responsible for the development of fast streamers. In addition, streamer propagation models shown in Figure 12 indicated that charge splitting process is dominant for the branching of dark channels, whereas charge amplification process is dominant for the branching of bright channels.…”

Section: Fast Negative Streamers Versus Fast Positive Streamers: Diffmentioning

confidence: 99%

Pre-breakdown and breakdown mechanisms of an inhibited gas to liquid hydrocarbon transformer oil under negative lightning impulse voltage

Lü

Liu

Wang

2017

IEEE Trans. Dielect. Electr. Insul.

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In this paper, streamer and breakdown phenomena and their mechanisms of an inhibited Gas-To-Liquid (GTL) transformer oil under standard negative lightning impulse voltages were studied. A conventional inhibited mineral oil was also tested as the benchmark. Experiments were carried out in 25 mm and 50 mm point-plane gaps. Streamer and breakdown phenomena of both oils were observed from the streamer inception voltage level up to the voltage level at which fast streamer appears with velocity over 10 km/s. The results showed that the GTL oil has a higher breakdown voltage and a higher acceleration voltage compared to the mineral oil. This is due to the fact that the GTL oil has a much lower aromatic content compared to the mineral oil. The streamer investigations showed that the development of fast streamers in both oils is the consequence of transition from dark streamer channels to bright streamer channels. By comparing with the results obtained under positive polarity [1], the differences in the propagation mechanisms between the fast negative streamers and fast positive streamers were explained.

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Section: Fast Negative Streamers Versus Fast Positive Streamers: Diffmentioning

confidence: 99%

Pre-breakdown and breakdown mechanisms of an inhibited gas to liquid hydrocarbon transformer oil under negative lightning impulse voltage

Lü

Liu

Wang

2017

IEEE Trans. Dielect. Electr. Insul.

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“…A brief review of the mechanisms of formation of streamer discharges in a liquid [8] mentions the influence of molecular ionization and ion dissociation factors, which depends on the electric field, Auger mechanism, accompanying the electric breakdown mechanism.…”

mentioning

confidence: 99%

“…, (8) where В, с are the empirical constants that depend on the composition of the gas inside the bubble (for example, for water vapor at Е/р = 120 -800 (V•m)/N constants B = 290, c = 0.3 -0.6); p 0 is the normal atmospheric pressure, p 0 ≈ 10 5 Pa; h = r 2 /r 1 ; d cr is the critical (minimal) size of the bubble at which its breakdown occurs determined according to (9): The calculation according to formula (8) assumes the following assumptions:…”

mentioning

confidence: 99%

Analysis and Development of the Bubble Model of the Formation Stage of High-Voltage Breakdown of the Water Gap

Zhekul¹,

Khvoshchan²,

Smirnov³

et al. 2018

Elektroteh. elektromeh.

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Purpose. A high-voltage underwater electric explosion, realized by discharging a capacitor into a water gap, is characterized by three main stages: the stage of formation of the plasma channel, the channel stage and post-discharge one. Substantially, the channel, post-discharge stages and the efficiency of energy release in the channel and the increase in the hydrodynamic effect on the object being processed depend on the parameters of the stage of formation. The purpose of the work was to review the existing mechanisms for the formation of a high-voltage discharge channel with the analysis and development of a bubble model of the stage of formation of water gap breakdown. Methodology. We have applied the analysis of existing theories on the formation of a high-voltage discharge channel, the carrying out of electrophysical studies with the processing of the obtained data. Results. A review and analysis of modern concepts of pre-breakdown processes in a high-voltage electric discharge in a liquid showed that the «bubble» model of the ignition of a discharge is applicable at an electric field strength (36-180) kV/cm. We have further developed the bubble model of the stage of formation of high-voltage breakdown on the results of experimental studies of the electrical characteristics of the discharge in the aqueous electrolyte with increased hydrostatic pressure and minimum voltage providing ignition of the discharge. A qualitative description of three phases of the stage of formation of the plasma channel in the liquid electrolyte is proposed. Originality. We have further developed the bubble model of the stage of formation of highvoltage breakdown of the liquid electrolyte on the results of experimental studies of the electrical characteristics of the discharge in the aqueous electrolyte with increased hydrostatic pressure and minimum voltage providing ignition of the discharge. A qualitative variation of the resistance of the gap in the pre-breakdown stage of the discharge is considered. Practical value. Determination of the scientific basis for creating a methodology for calculating the pre-breakdown characteristics of an electric discharge to improve the efficiency of electric discharge devices. References 19, figures 4.

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“…Gas–liquid cold plasma is a new branch of cold plasma, and has been adopted to treat waste water, produce ammonia, sterilize the bacteria, and fabricate nanomaterials . Different from plasma in the gas phase, electron‐induced reactions may take place at the gas–liquid interface in gas–liquid plasma . The products in gas–liquid plasma may undergo two pathways: one is to escape from the gas–liquid interface to the gas phase, and the other is to remain in the liquid phase to cause relevant liquid‐based chemical reactions.…”

mentioning

confidence: 99%

“…However, the values were calculated without considering the electrons. Plasma synthesis may make many reactions become possible or more quickly with the assistance of energetic electrons . Equation is an exothermic reaction, which consumes the OH − ions generated by the former reaction to form the Cu 2 (OH) 3 NO 3 .…”

mentioning

confidence: 99%

Gas–Liquid Cold Plasma for Synthesizing Copper Hydroxide Nitrate Nanosheets with High Adsorption Capacity

Duan

Zhan

et al. 2016

Adv Materials Inter

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A facile, fast and environmentally friendly gas–liquid plasma method for synthesizing Cu2(OH)3NO3 nanosheets is reported for the first time. The preparation process just takes 12 min using Cu(NO3)2 aqueous solution without any other chemical agents. The Cu2(OH)3NO3 nanosheets exhibit much higher methyl orange (MO) adsorption capacity (428.8 mg MO g−1) than that prepared by the solvothermal method (212.8 mg MO g−1).

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Formation mechanism of streamer discharges in liquids: a review

Cited by 98 publications

References 72 publications

Pre-breakdown and breakdown mechanisms of an inhibited gas to liquid hydrocarbon transformer oil under negative lightning impulse voltage

Pre-breakdown and breakdown mechanisms of an inhibited gas to liquid hydrocarbon transformer oil under negative lightning impulse voltage

Analysis and Development of the Bubble Model of the Formation Stage of High-Voltage Breakdown of the Water Gap

Gas–Liquid Cold Plasma for Synthesizing Copper Hydroxide Nitrate Nanosheets with High Adsorption Capacity

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