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Influence of SF6/N2 Gas Mixture Ratios on the Lightning Streamer Propagation Characteristics of 22 kV MV Circuit Breaker

  • Gandhi, R. (Anna University Chennai, Department of EEE, Gnanamani College of Engineering) ;
  • Chandrasekar, S. (Dept. of Electrical and Electronics Engineering, Sona College of Technology) ;
  • Nagarajan, C. (Dept. of Electrical and Electronics Engineering, Muthayammal Engineering College)
  • Received : 2017.10.10
  • Accepted : 2018.03.27
  • Published : 2018.07.01

Abstract

In recent times, gas insulated medium voltage (MV) circuit breakers (CB) form a vital component in power system network, considering its advantages such as reduced size and safety margins. Gas insulation characteristics of circuit breakers are generally measured by lightning impulse (LI) test according to IEC standard 60060-1 as a factory routine test. Considering the environmental issues of $SF_6$ gas, many research works are being carried out towards the mixture of $SF_6$ gases for high voltage insulation applications. However, few reports are only available regarding the LI withstand and streamer propagation characteristics (at both positive and negative polarity of waveform) of $SF_6/N_2$ gas mixture insulated medium voltage circuit breakers. In this paper, positive and negative polarity LI tests are carried out on 22 kV medium voltage circuit breaker filled with $SF_6/N_2$ gas mixture at different gas pressures (1-5 bar) and at different gas mixture ratios. Important LI parameters such as breakdown voltage, streamer velocity, time to breakdown and acceleration voltage are evaluated with IEC standard LI ($1.2/50{\mu}s$) waveform. Weibull distribution analysis of LI breakdown voltage data is carried out and 50% probability breakdown voltage, scale parameter and shape parameter are evaluated. Results illustrate that the $25%SF_6+75%N_2$ gas filled insulation considerably enhances the LI withstand and breakdown strength of MV circuit breakers. LI breakdown voltage of circuit breaker under negative polarity shows higher value when compared with positive polarity. Results show that maintaining the gas pressure at 0.3 MPa (3 bar) with 10% $SF_6$ gas mixed with 90% $N_2$ will give optimum lighting impulse withstand performance of 22 kV MV circuit breaker.

Keywords

References

  1. Sven D. Meier, Philip J. Moore, and Paul F. Coventry, "Radiometric Timing of High-Voltage Circuit- Breaker Opening Operations" IEEE Transactions on Power Delivery, vol. 26, no. 3 pp. 1411-1417, 2011. https://doi.org/10.1109/TPWRD.2011.2106225
  2. M. T. C. Fang, and G. R. Jones, "Fundamental arc properties for the design of gas-blast circuit-breaker test heads" Electronics and Power, vol. 25, no.2 pp. 131-135, 1979. https://doi.org/10.1049/ep.1979.0086
  3. Sumedh Pawar, Kishor Joshi, Lalichan Andrews, and Subodh Kale, "Application of Computational Fluid Dynamics to Reduce the New Product Development Cycle Time of the Gas Circuit Breaker," IEEE Transactions on Power Delivery,vol. 27, no. 1 pp. 156-163, 2012. https://doi.org/10.1109/TPWRD.2011.2170711
  4. Hidemasa Takana, Toshiyuki Uchii, Hiromichi Kawano, and Hideya Nishiyama "Real-Time Numerical Analysis on Insulation Capability Improvement of Compact Gas Circuit Breaker" IEEE Transactions on Power Delivery," vol. 22, no. 3 pp. 1541-1546, 2007. https://doi.org/10.1109/TPWRD.2007.899796
  5. Hiroyuki Hama, and Shigemitsu Okabe, "Factors dominating dielectric performance of real-size gas insulated system and their measures by dielectric coatings in $SF_6$ and potential gases," IEEE Transactions on Dielectrics and Electrical Insulation vol. 20, no. 5 pp. 1737 - 1748, 2013. https://doi.org/10.1109/TDEI.2013.6633704
  6. T. Uchii, K. Iwata, H. Kawano, T. Nakamoto, and K. Suzuki, "Behavior of inhomogeneous hightemperature $SF_6$ gas in a gas circuit breaker" IEEE Power Engineering Society Winter Meetin, pp. 289 - 294 vol.1, 2001.
  7. W. Z. Wang, Y. Wu, and M. Z. Rong, "Influence of ablated PTFE vapor entrainment on critical dielectric strength of hot $SF_6$ gas," IEEE Transactions on Dielectrics and Electrical Insulation, vol. 21, no. 4 pp. 1478 - 1485, 2014. https://doi.org/10.1109/TDEI.2014.004362
  8. C. Laverdure, M. Masse, and M. F. Frechette, "Gas integrity and adsorbent performance in an $SF_6$ circuit breaker after test duty" Electrical Insulation and Dielectric Phenomena," pp. 311-317,1993.
  9. P. Simka, U. Straumann and C. M. Franck, "$SF_6$ high voltage circuit breaker contact systems under lightning impulse and very fast transient voltage stress," IEEE Transactions on Dielectrics and Electrical Insulation, vol. 19, no. 3, June 2012 pp. 855-864. https://doi.org/10.1109/TDEI.2012.6215088
  10. Y. Fukuoka, T. Yasuoka, K. Kato and H. Okubo, "Breakdown conditioning characteristics of long gap electrodes in a vacuum," IEEE Transactions on Dielectrics and Electrical Insulation, vol. 14, no. 3, pp. 577 - 582, 2007. https://doi.org/10.1109/TDEI.2007.369516
  11. A. Beroual and M-L. Coulibaly, "Experimental investigation of breakdown voltage of $CO_2$, N2 and $SF_6$ gases, and $CO_2$-SF6 and N2-$SF_6$ mixtures under different voltage waveforms," 2016 IEEE International Power Modulator and High Voltage Conference (IPMHVC), pp. 292-295, 2016
  12. Alan H. Cookson and Roy E. Wootton, "Particleinitiated ac and dc breakdown in compressed nitrogen, $SF_6$, and nitrogen-$SF_6$ mixtures," Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1973, pp. 234-241.
  13. An Su, Xin Lin, Xintao Li and Huili Chen, "Experiment on breakdown characteristics of $SF_6$/ $CF_4$ gas mixtures in short gap," Electricity Distri- bution (CICED), 2016 China International Conference, 10-13 Aug. 2016
  14. P. Widger, A. Haddad, and H. Griffiths "Breakdown performance of vacuum circuit breakers using alternative CF3I-$CO_2$ insulation gas mixture," IEEE Transactions on Dielectrics and Electrical Insulation, vol. 23, no.1 pp. 14-21, 2016. https://doi.org/10.1109/TDEI.2015.005254
  15. Can Guo, Qiaogen Zhang, Haoyang You, Tao Wen, Jingtan Ma and Yifan Qin, "Influence of electric field non-uniformity on breakdown characteristics in SF6/N2 gas mixtures under lightning impulse," 2016 IEEE International Power Modulator and High Voltage Conference (IPMHVC), pp. 287-291, 2016.
  16. Hu Zhao, Xingwen Li, Kai Zhu, Qian Wang, Hui Lin and Xiaoxue Guo, "Study of the Arc Interruption Performance of $SF_6$-$CO_2$ Mixtures as a Substitute for SF6," IEEE Transactions on Dielectrics and Electrical Insulation, vol. 23, no. 5, pp. 2657-2667, October 2016. https://doi.org/10.1109/TDEI.2016.7736824
  17. Shigemitsu Okabe, Junichi Wada, and Genyo Ueta, "Dielectric properties of gas mixtures with $C_3F_8/C_2F_6$ and $N_2$/$CO_2$," IEEE Transactions on Dielectrics and Electrical Insulation, vol. 22, no. 4, pp 2108-2116, 2015. https://doi.org/10.1109/TDEI.2015.005040
  18. Dong-Young Lim, and Sungwoo Bae, "Study on oxygen/nitrogen gas mixtures for the surface insulation performance in gas insulated switchgear" IEEE Transactions on Dielectrics and Electrical Insulation, vol. 22, no. 3 pp. 1567-157, 2015. https://doi.org/10.1109/TDEI.2015.7116352
  19. Zhan-qing Chen, Xian Cheng, Lian-yao Jiao, and Guo-wei Ge, "Simulation on the high current interruption principle for hybrid circuit breaker of vacuum interrupter and $CO_2$ gas interrupter," International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV), vol. 2 pp. 1-4, 2016
  20. H. E. Nechmi, A. Beroual, A. Girodet, and P. Vinson, "Fluoronitriles/$CO_2$ gas mixture as promising substitute to $SF_6$ for insulation in high voltage applications," IEEE Transactions on Dielectrics and Electrical Insulation, vol. 23, no. 5 pp. 2587 - 2593, 2016. https://doi.org/10.1109/TDEI.2016.7736816
  21. Genyo Ueta, Toshihiro Tsuboi, Jun Takami, Shigemitsu Okabe, and Akihiro Ametani, "Insulation characteristics of gas insulated switchgear under lightning impulse and ac superimposed voltage," IEEE Transactions on Dielectrics and Electrical Insulation, vol.21, no. 3 pp.1026 - 1034, 2014. https://doi.org/10.1109/TDEI.2014.6832245
  22. D. Van der Born, P. H. F. Morshuis, and J. J. Smit; A. Girodet, "Negative LI breakdown behavior of electrodes with thin dielectric coatings in dry air at high pressure" IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), pp: 82-85,2014.
  23. Anandhan and S.Chandrasekar, "Understanding the lightning discharge withstand and breakdown characteristics of nano $SiO_2$ modified mineral oil for transformer applications," Journal of Advances in Chemistry, vol. 12, no. 19, pp. 5200-5208, 2016.
  24. P. Simka, U. Straumann, and C. M. Franck, "$SF_6$ high voltage circuit breaker contact systems under lightning impulse and very fast transient voltage stress," IEEE Transactions on Dielectrics and Electrical Insulation, vol. 19, no. 3 pp. 855-864, 2012. https://doi.org/10.1109/TDEI.2012.6215088