dr hab. inż. Robert Kowalak
Employment
- Associate professor at Department of Electrical Power Engineering
Social media
Contact
- robert.kowalak@pg.edu.pl
Associate professor
- Workplace
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Budynek Wydz. Elektr.
room 305 open in new tab - Phone
- (58) 347 18 27
- robert.kowalak@pg.edu.pl
Publication showcase
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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...
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Magnetic and capacitive couplings influence on power losses in double circuit high voltage overhead transmission line
Purpose – The paper aims to discuss problems of power and energy losses in a double-circuit overhead transmission line. It was observed from energymeters’ readings, that in such a line, active power losses can be measured as “negative”. The “negative” active power losses appear when the active power injected to the circuit is lower than the active power received at the circuit end. The purpose of this paper is to explain this phenomenon. Theoretical...
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Improving voltage levels in low-voltage networks with distributed generation – case study
The use of distributed generation in low-voltage networks may cause the voltage variation in them, within the wide range. In unfavourable circumstances, the voltage may reach unacceptable values. The paper presents the effect of distributed generation on voltage levels in a selected low-voltage rural distribution network in Poland. An analysis of possible methods for improving voltage levels in this network is conducted. The most...
Obtained scientific degrees/titles
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2005-07-07
Obtained science degree
dr inż. Electrical engineering (Technology)
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