Influence of SF&lt;inf&gt;6&lt;/inf&gt; admixtures to nitrogen on electrodeless streamer inception at an epoxy resin surface

Chvyreva, AV Anna; Pemen, A.J.M.; Christen, Thomas

doi:10.1109/tdei.2016.005599

Cited by 7 publications

(6 citation statements)

References 26 publications

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“…The dielectric surface can, however, emit or absorb charged particles, influencing the process of discharge propagation. In [26], it was shown, that for our case of electrodeless inception, the influence of a dielectric is largely limited to ε r -induced electric-field enhancement. In [25], it was demonstrated that the discharge propagation is mainly determined by processes in the gas.…”

Section: Choosing Values For ε R and α Effmentioning

confidence: 73%

“…The typical timescales of discharge propagation lie within several hundreds of nanoseconds. More detailed information about the current shapes of surface discharges and their analysis can be found in [25,26].…”

Section: Electrodeless Streamer Inceptionmentioning

confidence: 99%

“…Apparently, the U inc values for nitrogen, (ambient) air, and CO 2 do not differ significantly. The data for SF 6 /N 2 mixtures has been discussed in more detail in [26].…”

Section: Electrodeless Streamer Inceptionmentioning

confidence: 99%

See 2 more Smart Citations

Raether–Meek criterion for prediction of electrodeless discharge inception on a dielectric surface in different gases

Chvyreva

Pancheshnyi

Christen

et al. 2018

J. Phys. D: Appl. Phys.

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Electrodeless streamer inception on an epoxy surface under AC voltage stress was investigated for different gas compositions and pressures, with a focus on the pressure region below 1 bar. For this purpose, we used a set-up with cylindrical electrodes embedded out-of-axis in a cylindrical epoxy rod. Experiments were performed in N2, SF6, ambient air, Ar and CO2. The discharge inception voltage was measured, from which the critical value K of the ionization integral was reconstructed assuming a non-disturbed Laplacian field distribution. We have validated that for electropositive gases Ar an N2 the generally assumed value of K = 10 is in good agreement with our measurements. For electronegative gases, however, the experimentally obtained values turned out to be considerably higher. We attribute this discrepancy mainly to the statistical time delay of the first electron; to increase the probability of discharge inception in a critical region, it was necessary to extend the critical area by means of applying an overvoltage to the system.

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Section: Choosing Values For ε R and α Effmentioning

confidence: 73%

Section: Electrodeless Streamer Inceptionmentioning

confidence: 99%

See 1 more Smart Citation

Raether–Meek criterion for prediction of electrodeless discharge inception on a dielectric surface in different gases

Chvyreva

Pancheshnyi

Christen

et al. 2018

J. Phys. D: Appl. Phys.

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“…S2F10 and SOF2) [9,10]. Until recently, various gas mixtures have been considered to replace or minimize the usage of pure SF6 in high voltage equipment [11][12][13][14][15][16][17], which in line with the requirement listed in Kyoto Protocol 1997 as the effort to reduce greenhouse gas emissions [18]. One of the promising substitutes is SF6/N2 gas mixtures; owning to low cost, unlimited resources and remarkable synergistic effect on the dielectric characteristics [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…One of the promising substitutes is SF6/N2 gas mixtures; owning to low cost, unlimited resources and remarkable synergistic effect on the dielectric characteristics [19][20][21]. Previous study shows that SF6/N2 mixtures offer appreciable breakdown properties even at low SF6 contents [13][14][15][16]. However, most of the previous studies focused on the breakdown characteristics at high and wide range of pressure levels, i.e.…”

Section: Introductionmentioning

confidence: 99%

AC breakdown behavior of SF6/N2 gas mixtures under non-uniform field electrode configurations

et al. 2019

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Sulphur hexafluoride (SF6) gas owns remarkable properties as insulation medium and current interrupter, which make it being widely used in gas-insulated equipment up to now. However, SF6 gas has a drawback that gives adverse effect to the environment since it is a strong greenhouse gas. As the effort to minimize the SF6 usage, this study was conducted to investigate the AC breakdown behavior of SF6/N2 gas mixtures with 10/90 ratio at low pressure levels (i.e. 0.11 MPa to 0.15 MPa) under non-uniform field (i.e. R0.5-plane and R6-plane electrodes configurations). The results of the study indicate that the breakdown voltage of SF6/N2 gas mixtures in non-uniform field increases linearly with the increase of gas pressure and electrodes gap distance. As a function of gap distance, a higher increasing rate of breakdown voltage values were achieved at lowest pressure of 0.11 MPa compared to other pressure levels. In addition, it is also found that a higher breakdown voltage values was obtained under R6-plane configuration. But, the difference in breakdown voltage values between R0.5-plane and R6-plane configuration is less significant as the gap distance is increased. It is also observed that the field efficiency factor of R6-plane is higher than R0.5-plane which indicates a more uniform field exists between the electrodes.

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Influence of Trace SF6 on Surface Corona Characteristics in SF6/N2 Mixtures Under DC Voltages

Ding

Sun

et al. 2022

Lecture Notes in Electrical Engineering

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Influence of SF<inf>6</inf> admixtures to nitrogen on electrodeless streamer inception at an epoxy resin surface

Cited by 7 publications

References 26 publications

Raether–Meek criterion for prediction of electrodeless discharge inception on a dielectric surface in different gases

Raether–Meek criterion for prediction of electrodeless discharge inception on a dielectric surface in different gases

AC breakdown behavior of SF6/N2 gas mixtures under non-uniform field electrode configurations

Influence of Trace SF6 on Surface Corona Characteristics in SF6/N2 Mixtures Under DC Voltages

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