Study of the electric fields required for streamer propagation in humid air

Allen, N.L.; Boutlendj, M.

doi:10.1049/ip-a-3.1991.0005

Cited by 44 publications

(38 citation statements)

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“…Following this assumption, the X‐ray source region's maximum charge is likely the maximum charge contained within the streamer zone. Furthermore, the electric field for streamer propagation is about 500 kV/m [ Allen and Boutlendj , ], which is greater than E th . Thus, finding the source region radius r 0 also determines the maximum possible streamer zone charge and so calculations were made to quantify the maximum electric charge of the streamer zone.…”

Section: Discussion Regarding the Maximum Charge Of The Streamer Zonementioning

confidence: 98%

The structure of X‐ray emissions from triggered lightning leaders measured by a pinhole‐type X‐ray camera

et al. 2014

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Key Points:• Investigation into the structure of X-ray emissions was completed • Maximum X-ray source region radii were between 2 and 3 m • Leaders displayed consistency with both compact and diffuse electron sources Of those five leaders, one dart-stepped leader and two chaotic dart leaders are the focus of this paper. These three leaders displayed unique X-ray emission patterns: a chaotic dart leader displayed a diffuse structure (i.e., a wide lateral "spraying" distribution of X-rays), and a dart-stepped leader and a chaotic dart leader exhibited compact emission (i.e., a narrow lateral distribution of strong X-ray emission). These two distinct X-ray emission patterns (compact and diffuse) illustrate the variability of lightning leaders. Using Monte Carlo simulations, we show that the diffuse X-ray source must originate from a diffuse source of energetic electrons or possibly emission from several sources. The compact X-ray sources originate from compact electron sources, and the X-ray source region radius and electric charge contained within the X-ray source region were between 2 and 3 m and on the order of 10-4 C, respectively. For the leaders under investigation, the X-ray source region average currents were determined to be on the order of 102 A.

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Section: Discussion Regarding the Maximum Charge Of The Streamer Zonementioning

confidence: 98%

The structure of X‐ray emissions from triggered lightning leaders measured by a pinhole‐type X‐ray camera

et al. 2014

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“…The performance of ESPs is affected by the characteristics of negative corona discharge. Corona discharge is a gas discharge phenomenon and it is influenced by many factors, including humidity and temperature [5][6][7]. Extensive research has been done to understand the effect of humidity and temperature on the corona discharge and the electric characteristics of ESPs.…”

Section: Introductionmentioning

confidence: 99%

“…The corona inception voltage decreased with the increase of relative humidity [6][7][8][9]. Peek proposed a formula to evaluate the corona inception electric field on conductors [10].…”

Section: Introductionmentioning

confidence: 99%

Effect of humidity on negative corona discharge of electrostatic precipitators

Wang

You

2013

IEEE Trans. Dielect. Electr. Insul.

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The effect of humidity on the negative corona discharge of electrostatic precipitators was experimentally and numerically studied. The current-voltage characteristics of a wire-plate electrostatic precipitator was measured over a range of temperatures and relative humidities. The inception voltage and electric field were determined based on the streamer theory. A numerical method was used to study the influence of humidity on the distributions of electric field and charge density in an electrostatic precipitator. The results showed that the inception voltage and electric field decreased with the increase of humidity. The corona current was significantly affected by the humidity. A modified Peek formula was proposed with a correction to the humidity. The corona currents calculated with the modified Peek formula were in acceptable agreement with the experimental results. The distributions of electric field and charge density were affected by the humidity and applied voltage.

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“…The subject of the last category is generally on the effect of atmospheric parameters variation on the breakdown voltage in rod-plane gaps [18] [22][23] [28] [33][34][35][36][37][38][39]. All these studies have demonstrated that the IEC correction method [20] has many setbacks and can not be globally applied to all electrode configurations and voltage shapes.…”

mentioning

confidence: 99%

“…A great majority of these researches have been conducted on medium and/or long air gaps 30 cm-400 cm using DC or Impulse voltages. There are few researches carried out on the effect of humidity in a couple of occasions on 20 cm air-gap showing that there is a large difference between threshold and stability fields for the smaller air gaps [37]. It has been recommended that in the short air gaps (dáO cm) the threshold field for streamer propagation in the steady voltage conditions is a good measure to find a factor to replace g in equation (2.21) formula in IEC method, for corona inception voltage [37].…”

mentioning

confidence: 99%

Étude numérique et expérimentale pour déterminer le champ électrique d'apparition des décharges couronnes à l'aide de la configuration d'électrodes tige-plan =

Peyda¹

2006

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Study of the electric fields required for streamer propagation in humid air

Cited by 44 publications

References 0 publications

The structure of X‐ray emissions from triggered lightning leaders measured by a pinhole‐type X‐ray camera

The structure of X‐ray emissions from triggered lightning leaders measured by a pinhole‐type X‐ray camera

Effect of humidity on negative corona discharge of electrostatic precipitators

Étude numérique et expérimentale pour déterminer le champ électrique d'apparition des décharges couronnes à l'aide de la configuration d'électrodes tige-plan =

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