DBPapers
DOI: 10.5593/SGEM2014/B21/S7.045

SWITCHING ELECTRIC CIRCUITS WITH DC HYBRID BREAKER

D. Pasculescu, T. Niculescu,I. O. Stoica
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-10-0 / ISSN 1314-2704, June 19-25, 2014, Book 2, Vol. 1, 355-362 pp

ABSTRACT
The use of computer simulation has always been a powerful tool for technology in all its various fields of application. This paper describes a method and concept used to simulate the extinguishing of the electric arc occurring between the contacts of direct current breakers, using the Simulink toolbox within Matlab Software package. By the advanced use of the available software the electric arc extinguishing can be analysed easily and in detail. The method consists of using an LC type extinguishing group to be optimally sized. From this point of view is presented a theoretical approach to the phenomena that occurs immediately after disconnecting the load and the specific diagrams are drawn. Using these, the elements extinguishing group we can choose. At the end of the paper there is presented an analysis of the circuit switching process by decomposing the process in particular time sequences. For every time interval there was conceived a numerical simulation model in Matlab-Simulink medium which integrates the characteristic differential equation and plots the capacitor voltage variation diagram and the circuit dumping current diagram.

Keywords: diagram, electric arc, hybrid breaker, model, simulation

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