Nuclear Technology and Radiation Protection 2022 Volume 37, Issue 3, Pages: 201-206
https://doi.org/10.2298/NTRP2203201K
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Influence of the synergy of neutron and gamma radiation and functional aging on the efficiency of a hybrid protection circuit
Kartalović Nenad M. (Electrical Engineering Institute Nikola Tesla, University of Belgrade, Belgrade, Serbia)
Jusić Alija R. (Faculty of Electrical Engineering, University of Sarajevo, Sarajevo, Bosnia and Herzegovina)
Žigić Aleksandar D. (Electrical Engineering Institute Nikola Tesla, University of Belgrade, Belgrade, Serbia)
Nikezić Dušan P. (Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia), dusan@vin.bg.ac.rs
Due to the shortcomings of commercial filters and non-linear components for
overvoltage protection in the conditions of synergy of neutron and gamma
radiation and functional aging, the behavior of the hybrid protection circuit
under the same conditions was examined. In order for the experimental
procedure to correspond as closely as possible to the real situation, the
load of the hybrid circuit was not adjusted by impedance. The standard model
of the hybrid protection circuit recommended in accordance with IEC 1.3 is
simulated using the software package PSPICE. To that end, it is necessary to
create a varistor with appropriate elements. The equivalent inductance
parameters were found to be stable in relation to the experimental
conditions. It was also established that due to the synergy of neutron and
gamma radiation and functional aging, there is a change in the steepness of
the varistor characteristic and the tangent of the loss angle in the
capacitors. The overall effect of neutron and gamma radiation and functional
aging was tested on the hybrid circuit and on individual components. The
experiments were performed under well-controlled laboratory conditions, and
the combined measurement uncertainty of the experimental procedure did not
exceed 5%.
Keywords: neutron and gamma radiation, filter overvoltage protection, hybrid circuit for overvoltage protection
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