Arc models for simulating processes in circuits with a SF6 circuit breaker

• Autorzy: Sawicki Antoni

Identyfikatory

DOI

10.24425/aee.2019.125986

• Języki publikacji: EN

Abstrakty

EN

This paper demonstrates that if a linear dependence of arc dissipated power on power supplied is introduced at an initial stage of analysis, then, with some simplifying assumptions, the classical Mayr model is obtained. Similarly, if this dependence is taken into account in a model with residual conductance, the modified Mayr model is obtained. The study takes into consideration the local phenomenon of sudden voltage drop accompanying linear current decrease occurring in the circuit breaker. To account for this phenomenon, the Dirac delta function and its approximation by a Gaussian function, representing power or enthalpy disturbances, are introduced to the power balance equation. It is demonstrated that both variants yield the same effect, leading to identical differential equations. Macromodels of the circuit-breaker arc are created and connected with the power source circuit with lin- early decreasing current. The results obtained were found to be consistent with experimental data available in the literature. The models presented are based on a fairly uncomplicated 1st order differential equation and offer a straightforward physical interpretation of the phenomena in question.

Słowa kluczowe

EN

switching arc; high-voltage circuit breaker; Mayr model

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2019
• Tom: Vol. 68, nr 1
• Strony: 147--159
• Opis fizyczny: Bibliogr. 17 poz., rys., wz.

Twórcy

autor

Sawicki Antoni

• Czestochowa University of Technology, Faculty of Electrical Engineering Al. Armii Krajowej 17, 42-200 Czestochowa, Poland

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).