AN APPROXIMATE CALCULATION OF ENERGY DISSIPATION AND ELECTRIC EROSION OF ELECTRODES IN THE HIGH-VOLTAGE HIGH-CURRENT AIR SWITCH OF ATMOSPHERIC PRESSURE
DOI:
https://doi.org/10.20998/2074-272X.2017.3.05Keywords:
high-voltage high-current air switch, dissipated thermal energy in air spark and on the electrodes of switch, electric erosion of metallic electrodes of switch, depth of single crater of destruction on the electrodes of switchAbstract
Purpose. To obtain new calculation correlations, determining approximate energy dissipation and electric erosion of massive basic metallic electrodes in the high-voltage high-current air switchboard (HVCAS) of atmospheric pressure, in-use in the bit chain of the high-voltage electrophysics setting (HVES) with the powerful capacity store of energy (CSE). Methodology. Electrophysics bases of technique of high-voltage and large impulsive currents (LIC), scientific and technical bases of development and planning of high-voltage heavy-current impulsive electro-devices, including HVES and powerful CSE, and also methods of measuring in their bit chains of LIC of the microsecond temporal range. Results. On the basis of new engineering approach the results of calculation estimation of excretions energy and electric erosion of massive basic metallic electrodes are resulted in probed HVCAS. New correlations are obtained for the approximate calculation of thermal energy, selected in an impulsive air spark and on the workings surfaces of anode and cathode of HVCAS. It is entered and a new electrophysics concept, touching equivalent active resistance of impulsive air spark, is mathematically certain. New formulas are obtained for the approximate calculation of most depth of single round crater of destruction on the workings surfaces of basic metallic electrodes of HVCAS, and also mass of metal, thrown out magnetic pressure from this crater of destruction on the electrodes of switch for one electric discharge through them powerful CSE HVES. It is shown that the radius of the indicated single crater of destruction is approximately equal to the maximal radius of plasma channel of a spark discharge between a cathode and anode of HVCAS. The executed high-current experiments in the bit chain of HVES with powerful CSE validated row of the got and in-use calculation correlations for the estimation of energy dissipation and electric erosion of metallic electrodes in examined HVCAS. Originality. New engineering approach is developed for the approximate calculation and estimation of energy dissipation and electric erosion of basic metallic electrodes in HVCAS. A formula is firstly got for approximate calculation unchanging in the process of swaying or aperiodic discharge of CSE HVES on the electric loading of active resistance of impulsive air spark between the electrodes of probed HVCAS. Practical value. Drawing on the got results in a high-voltage impulsive technique provides operative implementation of calculation of balance of electric energy in the high-current circuit of HVES with powerful CSE and point electric load, and also prognostication of the technical state of workings surfaces of massive basic metallic electrodes of HVCAS.References
1. Dashuk P.N., Zayents S.L., Komel'kov V.S., Kuchinskiy G.S., Nikolaevskaya N.N., Shkuropat P.I., Shneerson G.A. Tehnika bol'shih impul'snyh tokov i magnitnyh polej [Technique large pulsed currents and magnetic fields]. Moscow, Atomizdat Publ., 1970. 472 p. (Rus).
2. Bostic W., Nardi V., Zucker O. Nakoplenie i kommutacija energii bol'shih plotnostej [Accumulation and commutation of energy of high densities]. Moscow, Mir Publ., 1979. 474 p. (Rus).
3. Baranov M.I. Application of new gas-discharge and solid-state semiconductor switchboards in high-current circuits of powerful high-voltage electrophysical installations. Electrical engineering & electromechanics, 2009, no.1, pp. 55-58. (Rus). doi: 10.20998/2074-272X.2009.1.11.
4. Baranov M.I. Application of new vacuum switchboards in high-current circuits of powerful high-voltage electrophysical installations and emergency protection circuits of power electrical equipment. Electrical engineering & electromechanics, 2009, no.3, pp. 5-10. (Rus). doi: 10.20998/2074-272X.2009.3.01.
5. Boyko N.I., Evdoshenko L.S., Zarochentsev A.I., Ivanov V.M., Tour A.N. High-Voltage Spark Gaps for Technological Purposes. Instruments and Experimental Technique, 2001, vol.44, no.2, pp. 204-212. doi: 10.1023/a:1017515003483.
6. Baranov M.I., Bocharov V.A., Zyabko Yu.P., Melnikov P.N. High-voltage strong current spark switches for high-voltage impulse and current generators. Tekhnichna elektrodynamika, 2003, no.3, pp. 41-47. (Rus).
7. Baranov M.I., Koliushko G.M., Kravchenko V.I., Nedzel’skii O.S., Nosenko M.A. High-voltage high-current air-filled spark gaps of an artificial-lightning-current generator. Instruments and Experimental Techniques, 2008, vol.51, no.6, pp. 833-837. doi: 10.1134/s0020441208060109.
8. Kuhling H. Spravochnik po fizike. Per. s nem. [Dictonary on Physics. Translated from German]. Moscow, Mir Publ., 1982. 520 p. (Rus).
9. Baranov M.I., Koliushko G.M., Kravchenko V.I., Nedzel’skii O.S., Dnyshchenko V.N. A Current Generator of the Artificial Lightning for Full-Scale Tests of Engineering Objects. Instruments and Experimental Technique, 2008, vol.51, no.3, pp. 401-405. doi: 10.1134/s0020441208030123.
10. Baranov M.I., Kniaziev V.V., Rudakov S.V. Calculation and experimental estimation of results of electro-thermal action of rationed by the international standard IEC 62305-1-2010 impulse current of short blow of artificial lightning on the thin-walled coverage from stainless steel. Electrical engineering & electromechanics, 2017, no.1, pp. 31-38. (Rus). doi: 10.20998/2074-272X.2017.1.06.
11. Raiser Yu.P. Fizika gazovogo razrjada [Physics of gas discharge]. Moscow, Nauka Publ., 1987. 592 p. (Rus).
12. Namitokov K.K. Elektroerozionnye javlenija [Electroerosion phenomena]. Moscow, Energia Publ., 1978. 456 p. (Rus).
13. Butkevich G.V., Belkin G.S., Vedeshenkov N.A., Zhavoronkov M.A. Elektricheskaja erozija sil'notochnyh kontaktov i elektrodov [Electrical erosion of high current contacts and electrodes]. Moscow, Energia Publ., 1978. 256 p. (Rus).
14. Baranov M.I. Izbrannye voprosy elektrofiziki. Tom 3: Teorija i praktika elektrofizicheskih zadach [Selected topics of Electrophysics. Vol. 3: Theory and practice of electrophysics tasks]. Kharkiv, Tochka Publ., 2014. 400 p. (Rus).
15. Lozanskiy E.D., Firsov O.B. Teorija iskry [Theory of spark]. Moscow, Atomizdat Publ., 1975. 272 p. (Rus).
16. SAE ARP 5412: 2013. Aircraft Lightning Environment and Ralated Test Waveforms. SAE Aerospace. USA, 2013. − pp. 1-56.
17. Baranov M.I. An approximate calculation of the maximum temperature of the plasma in high-current high-voltage spark discharge channel switch air atmospheric pressure. Tekhnichna Elektrodynamika, 2010, no.5, pp. 18-21. (Rus).
18. Gulyi G.A. Nauchnye osnovy razriadno-impul'snykh tekhnologii [Scientific basis of the discharge-pulse technology]. Kiev, Naukova Dumka Publ., 1990. 208 p. (Rus).
19. Abramov N.R., Kuzhekin I.P., Larionov V.P. Characteristics of penetration of the walls of metal objects when exposed to lightning. Electricity, 1986, no.11, pp. 22-27. (Rus).
20. Belkin G.S., Kiselev V.Ya. Influence of electrode material on erosion at strong currents. Technical Physics, 1967, vol.37, no.5, pp. 977-979. (Rus).
21. Ermilov I.V. Development of a complex of high-voltage high-current equipment of a new generation for magnetic-pulse processing of materials. Trudy mezhdunarodnoi nauchno-tekhnicheskoi konferentsii MIOM-2007 [Proceedings of the International Scientific and Technical Conference MPPM-2007]. Russian Federation, Samara, SGAU, 18-19 September, 2007, pp. 88-98. (Rus).
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