The Short-Circuit Protections in Hybrid Systems with Low-Power Synchronous Generators

Bartosz Rozegnał, Paweł Albrechtowicz, Dominik Mamcarz, Natalia Radwan-Pragłowska and Artur Cebula
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Bartosz Rozegnał: Institute of Electromechanical Conversion, Cracow University of Technology, Warszawska 24 St., 31-155 Cracow, Poland
Paweł Albrechtowicz: Institute of Electromechanical Conversion, Cracow University of Technology, Warszawska 24 St., 31-155 Cracow, Poland
Dominik Mamcarz: Institute of Electromechanical Conversion, Cracow University of Technology, Warszawska 24 St., 31-155 Cracow, Poland
Natalia Radwan-Pragłowska: Institute of Electromechanical Conversion, Cracow University of Technology, Warszawska 24 St., 31-155 Cracow, Poland
Artur Cebula: Department of Energy, Cracow University of Technology, Jana Pawła II Av., 31-864 Cracow, Poland

Energies, 2020, vol. 14, issue 1, 1-12

Abstract: Single-phase short-circuits are most often faults in electrical systems. The analysis of this damage type is taken for backup power supply systems, from small power synchronous generators. For these hybrid installations, there is a need for standard protection devices, such as fuses or miniature circuit breaker (MCB) analysis. Experimental research mentioned that a typical protective apparatus in low-voltage installations, working correctly during supplying from the grid, does not guarantee fast off-switching, while short-circuits occur during supplication from the backup generator set. The analysis of single-phase short-circuits is executed both for current waveform character (including sub-transient and transient states) and the carried energy, to show the problems with the fuses and MCB usage, to protect circuits in installations fed in a hybrid way (from the grid and synchronous generator set).

Keywords: short-circuit current; synchronous generator; hybrid supply system; miniature circuit breakers; fuses (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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