Title :
Limiting hull touch voltages in large power shore connection systems during phase-to-ground faults: A solution proposal
Author :
Sulligoi, G. ; Bosich, Daniele ; Baldi, R. ; Tosato, F.
Author_Institution :
Dept. of Eng. & Archit., Univ. of Trieste, Trieste, Italy
Abstract :
High Voltage Shore Connection (HVSC) is a technical solution to supply ships at berth in an economic way while reducing air pollution in city ports. The increased power demand of modern cruise ships may reach several tens of MVA, requiring a primary port voltage supply at voltage >100 kV. When a phase-to-ground fault arises on the HV side, safety problems due to increasing ship hull touch voltage may arise. A possible solution is proposed in this paper, based on an HV/HV y-Δ-y transformer with secondary resistance grounded neutral in the distribution power supply utility substation, with the aim to reduce phase-to-ground fault current at port.
Keywords :
air pollution control; power distribution faults; ships; substations; transformers; HV side; HV/HV y-Δ-y transformer; air pollution reduction; cruise ships; distribution power supply utility substation; high voltage shore connection; hull touch voltages; large power shore connection systems; phase-to-ground fault current reduction; phase-to-ground faults; safety problems; secondary resistance; solution proposal; supply ships; technical solution; Fault currents; Grounding; Impedance; Marine vehicles; Ports (Computers); Resistance; Substations;
Conference_Titel :
Electric Ship Technologies Symposium (ESTS), 2013 IEEE
Conference_Location :
Arlington, VA
Print_ISBN :
978-1-4673-5243-7
DOI :
10.1109/ESTS.2013.6523757