DocumentCode :
602995
Title :
Time and frequency domain methods to evaluate grounding strategies for medium voltage DC shipboard power systems
Author :
Graber, Lukas ; Steurer, Michael ; Kvitkovic, Jozef ; Kofler, Mario ; Pekarek, Steve ; Howard, R.A. ; Taher, Ahmed ; Mazzola, M.S. ; Card, A.E.
Author_Institution :
Center for Adv. Power Syst., Florida State Univ., Tallahassee, FL, USA
fYear :
2013
fDate :
22-24 April 2013
Firstpage :
43
Lastpage :
48
Abstract :
Several key performance parameters of shipboard power systems are affected by the grounding scheme applied. The grounding scheme impacts the nature of voltage transients during switching events and faults, identifiability and locatability of ground faults, fault current levels, and power quality. Power system simulations play an important role in choosing an appropriate grounding scheme and optimizing its components. The tools typically used for power system analysis need to be carefully tested to determine if they are appropriate for modeling effects of different grounding schemes and in particular the high frequency transients. This paper sheds light on modeling and validation techniques specific to grounding models. Furthermore, insight is provided to present research into new types of power system modeling techniques based on scattering parameters for improved accuracy at higher frequencies of interest. A testbed designed to study the impact of different types of grounding schemes is also introduced and first characterization measurements in the frequency domain provided. The paper concludes with an outlook to future work, which will focus on rigorous validation of the models developed.
Keywords :
earthing; frequency-domain analysis; power supply quality; power system faults; power system transients; time-domain analysis; fault current levels; frequency domain methods; ground faults; grounding; medium voltage DC shipboard power systems; power quality; power system analysis; power system modeling; switching events; switching faults; time domain methods; voltage transients; Circuit faults; Computational modeling; Grounding; Marine vehicles; Power system transients; Scattering parameters;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electric Ship Technologies Symposium (ESTS), 2013 IEEE
Conference_Location :
Arlington, VA
Print_ISBN :
978-1-4673-5243-7
Type :
conf
DOI :
10.1109/ESTS.2013.6523709
Filename :
6523709
Link To Document :
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