Thermal Current Interruption Performance of CO2 and CO2/C4F7N mixture

Authors

DOI:

https://doi.org/10.14311/ppt.2023.2.77

Keywords:

SF6 alternatives, switching arcs, gas circuit breakers

Abstract

This contribution aims to compare the thermal interruption performance of pure CO2
with a mixture of CO2/C4F7N. Measurements primarily show higher interrupting capability for a
mixture with C4F7N. Detailed analysis shows a distinct difference in the failure mechanism which for
CO2/C4F7N is thermal failure and for CO2 mostly “hot dielectric” failure. The difference in the failure
mechanism is relevant for the test duties with the most severe TRV. The influence of ablated nozzle
material on the interruption process can be ruled out.

References

A. Majima et al. Properties of CO2/O2 gas mixture as an alternative medium for gas circuit breakers. In 22nd International Conference on Gas Discharges and their Applications (GD2018), pages 367–370, 2018.

B. Radisavljevic et al. Switching Performance of Alternative Gaseous Mixtures in High-Voltage Circuit Breakers. In The 20th International Symposium on High Voltage Engineering, Buenos Aires, Argentina, 2017.

W. Y. Lee et al. Comparison of the interrupting capability of gas circuit breaker according to SF6, g3, and CO2/O2 mixture. MDPI AG., 13(23), 2020. doi:10.3390/en13236388.

P. Stoller et al. Co2 as an arc interruption medium in gas circuit breakers. IEEE Transactions on Plasma Science, 41(8):2359–69, 12 2013.

doi:10.1109/TPS.2013.2259183.

S. Kosse et al. Holistic evaluation of the performance of today’s SF6 alternatives proposals. page 210 – 213, 2017. doi:10.1049/oap-cired.2017.0819.

J. Mantilla et al. Environmentally friendly perfluoroketones-based mixture as switching medium in high voltage circuit breakers. In CIGRE Session 46, August 2016.

Z. Guo et al. Study of the arc interruption performance of co2 gas in high-voltage circuit breaker. IEEE Transactions on Plasma Science, 47(5):2742–2751, 2019. doi:10.1109/TPS.2019.2904981.

T. Uchii et al. Thermal interruption capability of carbon dioxide in a puffer-type circuit breaker utilizing polymer ablation. In IEEE/PES Transmission and Distribution Conference and Exhibition, volume 3, pages 1750–1754 vol.3, 2002. doi:10.1109/TDC.2002.1177719.

C. Franck et al. Comparative test program framework for non-SF6 switching gases. B&H Electrical Engineering, 15:19–26, 2021. doi:10.2478/bhee-2021-0002.

P. Pietrzak et al. Wear of the arcing contacts and gas under free burning arc in SF6 alternatives. IEEE Transactions on Power Delivery, pages 1–8, 2023. doi:10.1109/TPWRD.2023.3234364.

J. T. Engelbrecht et al. Cu/W electrode ablation and its influence on free-burning arcs in SF6 alternatives. IEEE Transactions on Plasma Science, pages 1–10, 2022. doi:10.1109/TPS.2022.3203007.

J. T. Engelbrecht et al. Statistical methods for identifying small differences in the thermal interruption performance of SF6 alternatives. To appear in 24th Symposium on Physics of Switching Arc, 2023.

J. Engelbrecht et al. Evaluating conductance decay and post-arc current in axially blown CO2 arcs. To appear in Proc. of the XXIII Int. Conf. on Gas Discharges, 2023.

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Published

2023-08-31

Issue

Vol. 10 No. 2 (2023)

Section

Articles

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Copyright (c) 2023 P. Pietrzak, J. T. Engelbrecht, P. Simka, C. M. Franck

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