Abstract
SF6 gas is mostly used in medium and high voltage power equipment due to its great insulation and arc extinguishing performance. However, large amounts of SF6 gas can have a serious greenhouse effect. This article studies the arc extinguishing performance of HFO-1336mzz (E)/CO2 mixture to evaluate its feasibility as an environmentally friendly gas to replace SF6 in medium voltage switchgear. Based on the theory of local thermodynamic equilibrium, the physical parameters of HFO-1336mzz(E)/CO2 were calculated by Gibbs energy minimization method, which provided important data support for the basic input parameters of simulation for arc burning simulation. Two-dimensional magnetohydrodynamic simulation model was established, and the load current breaking process was simulated under the pneumatic load switch structure. The temperature field distribution in the arc extinguishing room of HFO-1336mzz(E)/CO2 and SF6 gas were compared during the arc burning process. The results provide a key reference for the application of HFO-1336mzz(E)/CO2 as arc extinguishing medium in medium voltage switchgear.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (52277162, 51825702), the Science and Technology Project of China Southern Power Grid(GDKJXM20220361), and Shaanxi Provincial Science and Technology Plan Project (2022TD-59)
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Tang, N., Sun, D., Zhou, Y., Wang, K. (2024). Study on Arc Extinguishing Capability of HFO-1336mzz(E)/CO2 as SF6 Substitute Gas. In: Dong, X., Cai, L. (eds) The Proceedings of 2023 4th International Symposium on Insulation and Discharge Computation for Power Equipment (IDCOMPU2023). IDCOMPU 2023. Lecture Notes in Electrical Engineering, vol 1102. Springer, Singapore. https://doi.org/10.1007/978-981-99-7405-4_12
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DOI: https://doi.org/10.1007/978-981-99-7405-4_12
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