Temporary power generation installations offshore

Temporary diesel generation is often required to be installed on offshore facilities during production outages to maintain supplies to utilities systems. Platform power systems are often not designed to accommodate connection of temporary generation and engineering is required to ensure the power system operates reliably and safely. The design must consider multiple interfaces with electrical, control and process systems. This paper examines lessons learned from various temporary installations that have been used offshore. Consideration is given to the interface with the main power system, protection and earthing arrangements, nonstandard operation of existing equipment and process factors such as fuelling systems. Commercial drivers for various designs and operating scenarios are also analysed. The paper is intended to aid operators in selecting and designing appropriate temporary power installations.