The LTE thermofluid simulation of AR/SF6 gas-blast arcs in a nozzle space in an arc device

被引：0

作者：

Murai K. ^{[1
]}

Nakano T. ^{[1
]}

Tanaka Y. ^{[1
,2
]}

Uesugi Y. ^{[1
,2
]}

Ishijima T. ^{[2
]}

Tomita K. ^{[3
]}

Suzuki K. ^{[4
]}

Iijima T. ^{[5
]}

Shinkai T. ^{[5
]}

机构：

[1] Faculty of Electrical and computer Engineering, Kanazawa University, Kakuma, Kanazawa

[2] Research center for sustainable Energy and Technology, Kanazawa University, Kakuma, Kanazawa

[3] Department of Applied Science for Electronics and Materials, Kyushu University, 6-1, Kasuga-Koen, Kasuga, Fukuoka

[4] Department of Electrical and Electronic Engineering, Tokyo Denki University, 5, Asahi-cho, Senju, Adachi-ku, Tokyo

[5] Power Systems Company, Toshiba Corporation, 2-1, Ukishima, Kawasaki-ku, Kawasaki

来源：

IEEJ Transactions on Power and Energy | 2016年 / 136卷 / 09期

关键词：

Gas circuit breaker; Local thermodynamic equilibrium; Numerical thermofluid simulation; SF[!sub]6[!/sub] arc;

D O I：

10.1541/ieejpes.136.741

中图分类号：

学科分类号：

摘要：

The present paper describes numerical thermofluid simulation results of SF6, Ar, and Ar/SF6 arcs in a nozzle space at atmospheric pressure on the assumption of local thermodynamic equilibrium (LTE) condition. It is crucial to investigate fundamentals on arc extinction phenomena by numerical simulation approach as well as experimental approach. Two-dimensional temperature distributions in SF6, Ar, Ar/SF6 gas-blast arcs were calculated in a steady state at a direct current of 50 A. Furthermore, transient temperature distributions in these arcs were computed under free recovery condition for a fundamental study. We investigated dependences of the gas mixture ratio of SF6 to Ar and the gas flow velocity on the arc temperature and the arc voltage. The calculated arc voltage in the steady state and the transition of electron density under free recovery condition were compared with those obtained by laser Thomson scattering method in our experiments. As a result, the increasing admixture ratio of SF6 to Ar and the increasing gas flow velocity shrinks the arc plasma around nozzle throat inlet, leading to the higher arc resistance. Under free recovery condition, the arc plasma decay more rapidly there. Comparison in electron density shows the similar dependence on SF6 and Ar, while there is still some difference in the absolute value of electron density between the calculation results and experimental results.

引用

页码：741 / 748

页数：7

共 10 条

[1]

Stoller P.C., Seeger M., Iordanidis A.A., Naidis G.V., CO2 as an arc interruption medium in gas circuit breakers, IEEE Trans. Plasma Sci., 41, 8, pp. 2359-2369, (2013)

[2]

Tanaka Y., Song X., Uesugi Y., Kaneko S., Okabe S., Numerical simulation on quenching process of carbon dioxide arcs with hydrogen gas inclusion in different nozzle shapes, IEEJ Trans. PE, 133, 11, pp. 895-902, (2013)

[3]

Inada Y., Yamagami S., Matsuoka S., Kumada A., Ikeda H., Hidaka K., Simultaneous imaging of two-dimensional electron density and air-flow distribution over air-blast decaying arc, J. Phys. D: Appl. Phys, 47, 32, (2014)

[4]

Wang W.Z., Yan J.D., Rong M., Wu Y., Spencer J.W., Investigation of SF6 arc characteristics under shock condition in a supersonic nozzle with hollow contact, IEEE Trans. Plasma Sci., 41, 4, pp. 915-928, (2013)

[5]

Biswas D., Jimbo T., Udagawa K., Shinkai T., Suzuki K., Studies on fluid-plasma interaction associated with basic gas blast characteristics based on a high-order LES turbulence model, IEEJ Trans. PE, 133, 5, pp. 417-423, (2013)

[6]

Tanaka Y., Suzuki K., Development of a chemically nonequilibrium model on decaying SF6 arc plasmas, IEEE Trans. Power Delivery, 28, 4, pp. 2623-2629, (2013)

[7]

Kamimae R., Tanaka Y., Uesugi Y., Ishijima T., Shinkai T., Observation of decaying arc behaviors in Ar and Ar/SF6 gas confined in a nozzle using a high-speed video camera, Joint Conf. IWHV2012 & JK 2012 on ED&HVE, pp. 105-110, (2012)

[8]

Tomita K., Gojima D., Nagai K., Uchino K., Kamimae R., Tanaka Y., Suzuki K., Iijima T., Uchii T., Shinkai T., Thomson scattering diagnostics of decay processes of Ar/SF6 gas-blast arcs confined by a nozzle, J. Phys. D: Appl. Phys., 46, (2013)

[9]

Gleizes A., Cressault Y., Teulet P., Mixing rules for thermal plasma properties in mixtures of argon, air and metallic vapours, Plasma Sources Sci. Technol., 19, (2010)

[10]

Yokomizu Y., Matsumura T., Henmi R., Kito Y., Total voltage drops in electrode fall regions of SF6, argon and air arcs in current range from 10 to 20 000 A, J. Phys. D: Appl. Phys., 29, 5, pp. 1260-1267, (1996)

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