Islanded vs. grid connected LNG plants

Liquefied Natural Gas (LNG) Plants are conventionally supplied using onsite generation. This paper outlines alternative design concepts which utilize a public grid to partially or fully supply the process loads. The results obtained from the power system studies for such alternative design concepts as typically undertaken as part of the Front End Engineering Design (FEED) to ensure design requirements are met, are compared to the conventional islanded network configuration. The key differentiators in the results of the system analysis are outlined with a view to establish the merits of each design and to ensure the delivery of a reliable power system as the design process proceeds.