Abstract
The problem of simulation of the arc-suppression process in the case of switching off high-current dc circuits by devices with a liquid–metal working medium is considered. Since devices with a liquid–metal contact are designed to switch specific power circuits, the possibility of joint consideration of the electrical circuit and the switch is used to optimize the shutdown process. The obtained mathematical model allows with the use of the known temperature profile of the dynamic arc to calculate the main dynamic characteristics of the arc discharge, such as current, voltage, conductivity, temperature, and the trunk conductor radius. It is shown that, if the real temperature profile of the arc is not known, calculation of such integral characteristics of the arc-suppression process as current, resistance and intensity of the arc trunk can be carried out with the use of an equivalent temperature profile. On the basis of the obtained mathematical model, a calculation methodology is developed for the process of circuitry cutout by an apparatus with liquid–metal contacts with a change in the topological structure of the circuit being switched off during the commutation process.
Similar content being viewed by others
References
Voronin, A.A., Kireev, K.V., Kulakov, P.A., and Prikhodchenko, V.I., Experience in the application of liquid–metal working medium in high-current commutators and contact joints, Russ. Electr. Eng., 2008, vol. 79, no. 8.
Kireev, K.V., Rheostat commutation in devices with liquid–metal contact, Elektromekhanika, 2014, no. 5.
Kireev, K.V., Jet commutation of high-current electric circuits of direct current, Materialy IV mezhdunarodnoi nauchnoi konferentsii “Energetika i energoeffektivnye tekhnologii” (Proc. IV Int. Sci. Conf. “Energetics and Energy Efficient Technologies”), Lipetsk: Lipetsk. Gos. Tekh. Univ., 2010.
Kireev, K.V. and Tanaev, V.V., USSR Inventor’s Certificate no. 1453466, Byull. Izobret., 1989, no. 3.
Kireev, K.V., Integral model of electric arc, Vestn. Samar. Gos. Tekh. Univ., Ser. Tekh. Nauki, 2012, no. 1.(33).
Bron, O.B., Elektricheskaya duga v apparatakh upravleniya (Electric Arc in Control Devices), Moscow: Gosenergoizdat, 1954.
Raizer, Yu.P., Fizika gazovogo razryada (Physics of Gas Discharged), Moscow: Nauka, 1987.
Belkin, G.S., Elektricheskaya duga vakuumnykh vyklyuchatelyakh (Electric Arc in Vacuum Switchers), Moscow: Mosk. Energ. Inst., 2006.
Kuz’min, A.F. and Tanaev, V.V., Specific arc flaming in devices with liquid metal contacts, Elektrotekhn. Prom-st, Ser. Appar. Nizk. Napryazh., 1982, no. 6.(103).
Kireev, K.V. and Novikov, O.Ya., Analysis of a bridged arc in switching devices with a liquid metal, VII Vsesoyuznaya sessiya nauchnogo soveta po problemam “Fizika nizkotemperaturnoi plazmy,” Tezisy dokladov (VII All-Union Session of Scientific Council “Physics of Low-Temperature Plasma,” Abstracts of Papers), Ulan-Ude, 1988.
Kireev, K.V., Analysis of the stability of a direct-current electric arc system with a shunted arc, Elektrika, 2012, no. 3.
Kireev, K.V., The liquid–metal shunted switcher of a direct current, Elektrika, 2011, no. 8.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © K.V. Kireev, 2018, published in Elektrotekhnika, 2018, No. 4, pp. 49–52.
About this article
Cite this article
Kireev, K.V. Mathematical Simulation of Arc Suppression by Devices with a Liquid–Metal Contact. Russ. Electr. Engin. 89, 261–264 (2018). https://doi.org/10.3103/S1068371218040089
Received:
Published:
Issue Date:
DOI: https://doi.org/10.3103/S1068371218040089