Abstract
Cold ironing refers to the usage of less polluting power supply sources to deliver electricity to the moored ship. Such a shore-to-ship system is used when the ship is at a port so the auxiliary combustion engines may be turned off. This paper presents the numerical simulation results of a medium voltage cold-ironing system with regard to the currents flowing between the ship’s hull and grounding busbar. The IT electrical inland system with a neutral grounding resistor, as commonly used in shore-to-ship systems, is investigated. Parasitic capacitances present between the phase-to-hull and phase-to-ground in real-world applications can vary from each other. The direct and alternating currents flowing across the hull, seawater and the pier structure are amongst the causes that can lead to premature reinforced concrete degradation. Chosen cases of phase-to-ground or hull unequal capacitances influencing AC stray currents were considered.
Highlights
Corrosion Phenomena in Reinforced Concrete in the Presence of Stray CurrentsThere are a lot of electrochemical processes in reinforced concrete, especially in an environment filled with chlorides that are close to electrical sources
To of the potential problem, we investigated the electrical medium voltage connection of the ship with recognize the scale of the potential problem, we investigated the electrical medium voltage the inland power grid
On the thebasis basisof ofan anassumption assumptionthat thatananinland inlandelectrical electrical system and a ship’s power grid both the TN-type alternating current with double grounding, with an isolating of the TN‐type alternating current with double grounding, with an transformer installed onboard the vessel, weremodels prepared in order to estimate isolating transformer installedofonboard of simulation the vessel, models simulation were prepared in orderthe to stray currents values
Summary
A process process called called cold cold ironing ironing is is when when aa berthed berthed ship ship in in aaport portturns turns off offits itsauxiliary auxiliarygenerators generators and, cases, auxiliary boilers in order not tonot emittoexhaust gases. ItIt must must be be pointed out that the medium voltage, high power electrical connections in a shore-to-ship system pointed out that the medium voltage, high power electrical connections in a shore‐to‐ship system may maygenerate generaterisks, risks,especially especiallyfor forelectric electricshocks shocksor orarc arcfault fault explosions explosionswhile whileconnecting connectingthe themedium medium voltage plug into the socket. These concerns regard the safety of the operators, as the voltage plug into the socket.
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