
dr inż. Krzysztof Dobrzyński
Zatrudnienie
- Adiunkt w Katedra Elektroenergetyki
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- Miejsce pracy
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Budynek Wydz. Elektr.
pokój 314 otwiera się w nowej karcie - Telefon
- (58) 347 17 98
- krzysztof.dobrzynski@pg.edu.pl
Wybrane publikacje
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Nonlinear secondary arc model use for evaluation of single pole auto-reclosing effectiveness
Purpose – The purpose of this paper is to discuss two evaluation methods of single pole autoreclosing process effectiveness in HV transmission lines. Secondary arc current and recovery voltage results obtained by load flow calculation are compared to the results obtained by the time domain simulations. Moreover, a nonlinear secondary arc implementation is presented. Design/methodology/approach – A computer simulation studies were...
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A new method of fault loop resistance measurement in low voltage systems with residual current devices
This paper presents a new method of fault loop resistance measurement in low voltage systems with residual current devices. The method enables measuring fault loop resistance without nuisance tripping of residual current devices, by application an unconventional waveform of measurement current. It is important for proper verification of the effectiveness of protection against electric shock.
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Improving sensitivity of residual current transformers to high frequency earth fault currents
For protection against electric shock in low voltage systems residual current devices are commonly used. However, their proper operation can be interfered when high frequency earth fault current occurs. Serious hazard of electrocution exists then. In order to detect such a current, it is necessary to modify parameters of residual current devices, especially the operating point of their current transformer. The authors proposed...
Uzyskane stopnie/tytuły naukowe
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2012-12-18
Nadanie stopnia naukowego
dr inż. Elektrotechnika (Dziedzina nauk technicznych)
wyświetlono 924 razy