Impulse Breakdown Characteristics of Main Gap in the Presence of a Local Discharge
DOI:
https://doi.org/10.33736/jaspe.983.2019Keywords:
Breakdown, Electrical discharge; Electric field; High voltage; TriggeredAbstract
The characteristics of impulse breakdown voltages and the influence of the position of third electrode in air gap are investigated experimentally to study the parameters influencing the breakdown voltage in the presence of metallic objects around the high voltage power apparatus with air insulation. Experimental results show that the factors affecting the breakdown voltage are the shape and the size of the grounded electrode, the third metallic electrode location and the gap length. A comparison between negative and positive polarities of the applied voltages indicates an important influence of the polarity in the dielectric breakdown mechanism. The possible mechanism by which the local electric discharge initiates the main dielectric breakdown seems to be the high electric field around the local discharge channel and the streamers protruding from its surface.
References
Xiong, Z., Kushner, M.J. (2011). Photo-triggering and Secondary Electron Produced Ionization in Electric Discharge ArF* Excimer Lasers. J. Appl. Phys., Vol. 110, 083304.
https://doi.org/10.1063/1.3644953
Cheng, X.B., Liu, J.L., Qian, B.L., Chen, Z., Feng, J.H. (2010). Research of a High-Current Repetitive Triggered Spark-Gap Switch and its Application. IEEE Trans. Plasma Sci., Vol. 38(3), 516-522.
https://doi.org/10.1109/TPS.2009.2038381
Li, L., Li, C., Xiangdong, Q., Fuchang, L., Yuan, P. (2012). Modeling of Switching Delay in Gas-Insulated Trigatron Spark Gaps. J. Appl. Phys., Vol. 111, 053306.
https://doi.org/10.1063/1.3693033
Negara, Y., Yaji, K., Imasaka, K., Hayashi, N., Suehiro, J., Hara, M. (2007). AC Particle-Triggered Corona Discharge in Low Pressure SF6 Gas. IEEE Trans. Diel. Elect. Ins., Vol. 14(1), 91-100.
https://doi.org/10.1109/TDEI.2007.302876
Sharma, R.K., Chavan, S.G., Sadhu, R.K., Bhattacharya, S., Srivastava, G.P. (2013). Experimental Study of Flat Format Multichannel Triggered Rail Spark Gap. IEEE trans. on Plasma Sci., Vol. 41(10), 2666-2670.
https://doi.org/10.1109/TPS.2013.2277873
Forestier, B., Houard, A., Revel, I., Durand, M., André, Y.B., Prade, B., Jarnac, A., Carbonnel, J., Le Nevé, M., de Miscault, J.C., Esmiller, B., Chapuis, D., Mysyrowicz, A. (2012). Triggering, Guiding and Deviation of Long Air Spark Discharges with Femtosecond Laser Filament. AIP Advances, Vol. 2, 012151.
https://doi.org/10.1063/1.3690961
Kikuchi, J., Suzuki, Y., Muto, T., Ibuka, S., Ishii, S. (2012). Effect of DC Pre-Discharge on the Generation of Atmospheric Pulsed Microdischarges. Japanese J. Appl. Phys., Vol. 51, 046001.
https://doi.org/10.1143/JJAP.51.046001
Niermann, B., Budunoglu, I.L., Gurel, K., Boke, M., Ilday, F.O., Winter, J. (2012). Application of a Modelocked Fiber Laser for Highly Time Resolved Broadband Absorption Spectroscopy and Laser-Assisted Breakdown on Micro-plasmas. J. Phys. D: Appl. Phys., Vol. 45, 245202.
https://doi.org/10.1088/0022-3727/45/24/245202
Hara, M., Negara, Y., Setoguchi, M., Kurihara, T., Suehiro, J., Hayashi, N. (2005). Particle-triggered Prebreakdown Phenomena in Atmospheric Air Gap under ac Voltage. IEEE Trans. Diel. Elect. Ins., Vol. 12(5), 1071-1081.
https://doi.org/10.1109/TDEI.2005.1522199
Schoenbach, K., Kolb, J., Xiao, S., Katsuki, S., Minamitani, Y., Joshi, R. (2008). Electrical Breakdown of Water in Microgaps. Plasma Sources Sci. Technol., Vol. 17, 024010.
https://doi.org/10.1088/0963-0252/17/2/024010
Settaouti, A. (2010). Monte Carlo Simulation of Avalanche Formation and Streamer Discharge., Electr. Eng., Vol. 92, 35-42.
https://doi.org/10.1007/s00202-010-0157-3
Settaouti, A., Settaouti, L. (2011). Monte Carlo Simulation of Electrical Corona Discharge in Air. Elect. Pow. Syst. Res., Vol. 81, 84-89.
