The role of microparticles in initiating the electric breakdown in high–voltage vacuum insulation systems

• Autorzy: Opydo W. , Opydo D. , Bieliński W.

Identyfikatory

DOI

10.21008/j.1508-4248.2016.0016

• Języki publikacji: EN

Abstrakty

EN

The paper presents the hypotheses of initiating mechanisms of the electric breakdown in vacuum insulation systems caused by small material granules, i.e. the microparticles. The microparticles detached from the parent electrode have an electric charge and move in the inter–electrode area due to the electric field. The role of a microparticle in initiating the breakdown in a vacuum insulation system depends to a considerable extent on the microparticle energy at the moment of its impact against the opposite electrode, i.e. on its velocity at the impact time. The paper presents calculation of the microparticle velocity values at the moment of the impact against the opposite electrode under the conditions existing in practice in the vacuum insulation systems. It was assumed for purposes of the calculation that the microparticles are spherical and made of copper, aluminum or iron, and are subjected to constant electric field. Minimum values of the microparticle velocity necessary to cause plastic deformation of the electrode surface in result of the impact are determined. (The calculations have been carried out with the computer program developed in C# language on the Visual Studio 2013 environment.)

Słowa kluczowe

EN

high–voltage vacuum insulation systems; metallic microparticles; electric breakdown

• Wydawca: Wydawnictwo Politechniki Poznańskiej
• Czasopismo: Computer Applications in Electrical Engineering
• Rocznik: 2016
• Tom: Vol. 14
• Strony: 177--186
• Opis fizyczny: Bibliogr. 10 poz., rys., tab.

Twórcy

autor

Opydo W.

• Poznań University of Technology

autor

Opydo D.

• Poznań University of Technology

autor

Bieliński W.

• University of Science and Technology in Bydgoszcz

Bibliografia

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• [2] Cranberg L., The initiation of electrical breakdown in vacuum, J. Appl. Phys., 1952, vol. 23, s. 518.
• [3] Germain C., Rohrbach F., Mècanisme des decharges dans le vide, Proc. of VI Int. Conf. on Ionisation Phenomena in Gases, Paris 1963, vol. 2, s. 111 (in French).
• [4] Lebedev N.N., Skal’skaâ I.P., Sila dejstvuûščaâ na provodâščij šarik, pomeščennyj v pole plaskogo kondensatora, Žurnal tehničeskoj fiziki, 1962, t. 32, s. 375 (in Russian).
• [5] Menon M.M., Srivastava K.D., The nature of microparticles and their role in vacuum breakdown, Proc. of VI International Symposium on Discharges and Electrical Insulation in Vacuum, Swansea, UK, 1974, s. 3.
• [6] Olendzkaja N.F., Proboj vakuumnovo promieżutka pri pierienosie mieżdu elektrodami provodiaščich častic, Radiotechnika i Elektronika, 1963, t. 8, s. 479 (in Russian).
• [7] Opydo W., The analysis and investigation of the influence some factors of the condition of a vacuum insulation systems upon its electric strength at a power frequency a. c. voltage, Wydawnictwo Politechniki Poznańskiej, Seria Rozprawy Nr 150, Poznań 1984 (in Polish).
• [8] Opydo W., Properties of gas and vacuum high voltage insulation systems, Wydawnictwo Politechniki Poznańskiej, Poznań 2008 (in Polish) .
• [9] Opydo W., Ranachowski J., Electrical properties of vacuum insulation systems at a.c. voltage, Wydawnictwo Naukowe PWN, Warszawa – Poznań 1993 (in Polish).
• [10] Slivkov I.N., O mehanizme èlektričeskogo proboâ v vakuume, Žurnal tehničeskoj fiziki, 1957, t. 27, s. 2081 (in Russian).

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).