Dielectric Recovery Characteristics of High Voltage Gas Circuit Breakers Operating with CO2 Mixture
Authors: Peng Lu, Branimir Radisavljevic, Martin Seeger, Daniel Over, Torsten Votteler, Bernardo Galletti
CO₂-based gas mixtures exhibit huge potential as the interruption medium for replacing SF₆ in high voltage switchgears. In this paper, the recovery characteristics of dielectric strength of CO₂-O₂ mixture in the post arc phase after the current zero are presented. As representative examples, the dielectric recovery curves under conditions of different gas filling pressures and short-circuit current amplitudes are presented. A series of dielectric recovery measurements suggests that the dielectric recovery rate is proportional to the mass flux of the blowing gas, and the dielectric strength recovers faster in the case of lower short circuit currents.
Keywords: CO2 mixture, high voltage circuit breakers, dielectric recovery rate, short-circuit current, mass flux.Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 247
 Y. Kieffel; T. Irwin; P. Ponchon, and J. Owens, “Green Gas to Replace SF6 in Electrical Grids,” IEEE Power and Energy Magazine, vol. 14, pp. 32-39, April 2016.
 P. Billen, B. Maes, M. Larrain and J. Braet, “Replacing SF6 in Electrical Gas-Insulated Switchgear: Technological Alternatives and Potential Life Cycle Greenhouse Gas Savings in an EU-28 Perspective,” Energies, vol. 13, pp. 1807, April 2020.
 P. C. Stoller, M. Seeger, A. Iordanidis and G. Naidis, "CO2 as an Arc Interruption Medium in Gas Circuit Breakers," IEEE Trans. Plasma Sci., Vol. 41, pp. 2359-2369, August 2013.
 C. M. Franck, A. Chachereau, and J. Pachin, “SF6-Free Gas-Insulated Switchgear: Current Status and Future Trends,” IEEE Electrical Insulation Magazine, vol. 37, pp. 7-16, December 2020.
 S. Tian, X. Zhang, Y. Cressault, J Hu, B. Wang, S. Xiao, Y Li, and N. Kabbaj, “Research status of replacement gases for SF6 in power industry,” AIP Advances, vol. 10, pp. 050702, May 2020.
 P. C. Stoller, C.B. Doiron, D. Tehlar, P. Simka and N. Ranjan, " Mixtures of CO2 and C5F10O perfluoroketone for high voltage applications," IEEE Trans. Plasma Sci., Vol. 41, pp. 2712-2721, November 2017.
 M. Seeger, M. Schwinne, R. Bini, N. Mahdizadeh, and T. Votteler, “Dielectric recovery in a high-voltage circuit breaker in SF6,” J. Phys. D: Appl. Phys., vol. 45, pp. 395204, September 2012.
 E. Schade, and K. Ragaller, " Dielectric Recovery of an Axially Blown SF6-Arc After Current Zero: PartI - Experimental Investigations," IEEE Trans. Plasma Sci., Vol. PS-10, pp. 141-153, September 1982.
 B. Galletti, F. Kassubek, M. Buffoni, J. Carstensen, and P. C. Stoller, “Dielectric recovery in a high-voltage circuit breaker in SF6,” Plasma Physics and Technology., vol. 6, pp. 78-81, July 2019.