An Examination of Mutual Influences Between High-Voltage Shore-Connected Ships and Port Earthing Systems During Phase-to-Ground Faults

Author

Sulligoi, Giorgio ; Bosich, Daniele ; Rin, Aldo Da ; Tosato, Fabio

Author_Institution

Univ. of Trieste, Trieste, Italy

Volume

48

Issue

5

fYear

2012

Firstpage

1731

Lastpage

1738

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. When multiple megawatt-HVSC installations are to be exercised, electric power has to be delivered to the port from a primary high-voltage (HV) line at voltages higher than 100 kV. In this case, large earth fault currents can arise on the HV side, flowing through the port earthing system and the bonded ship hulls. Due to these faults, possible dangerous voltage gradients in sea water around the bonded ship hulls may occur. This phenomenon is pointed out and investigated in this paper to identify possible safety issues in some given scenarios.

Keywords

air pollution control; earthing; fault currents; fault diagnosis; ships; HV line; air pollution reduction; city ports; earth fault currents; electric power; high-voltage shore-connected ships; multiple megawatt-HVSC installations; mutual influences; phase-to-ground faults; port earthing systems; primary high-voltage line; safety issues; Coatings; Conductivity; Earth; Fault currents; Grounding; Marine vehicles; Wires; Dangerous voltage gradient; earth fault current; high-voltage line; high-voltage shore connection; port earthing system;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2012.2209621

Filename

6244866