DBPapers
DOI: 10.5593/SGEM2014/B21/S7.022

EVALUATION OF ELECTRICAL PARAMETERS OF INTRINSIC SAFETY BARRIERS OF THE ELECTRICAL EQUIPMENT INTENDED TO BE USED IN ATMOSPHERES WITH EXPLOSION HAZARD

T. Niculescu, D. Pasculescu, V. Pasculescu, 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, 169-176 pp

ABSTRACT
In the past few years, high-level scientific languages such as Matlab have become more and more popular for both research and educational purposes. Matlab has been proven to be one of the best software packages which lead to good results in the field of electrical engineering analysis. Electrical equipment which operate in potentially hazardous environments are externally connected through intrinsic safety barriers. Their gauging should observe the safety standards in the field and it is made on grounds of a theoretical analysis, which is focused in this paper. The analysis of the safety barrier involves the consideration of two important regimes: the a-periodic and the oscillatory regime. The safety barrier is studied when connected to a DC and AC voltage. In this purpose, a theoretical analysis of the barrier was made, in which the uniformly distributed parameters were considered to be concentrated. For each situation mentioned above, the analytical expressions of the output voltage and of the current through the barrier were inferred. SimPowerSystems in part of Matlab Simulink and it operates in Simulink environment. The safety barrier is analysed in Matlab environment, through numerical simulation in Simulink.

Keywords: a-periodic regime, intrinsic safety, oscillating regime, safety barrier, SimPowerSystems

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