Supplying control power to the Asgard Subsea compression system

The Asgard subsea compression station has been in commercial operation for over a year and has been described as working like a Swiss watch. An essential part of the system is providing subsea control power to the station. This paper will describe the design, component qualification, fabrication, testing, installation and commissioning of the Control Power Distribution Units. These redundant units are mounted on the subsea template together with the compressor and other equipment and supplies them with auxiliary power. A major factor for cost control was being able to use commercially available components for these subsea units. Extensive qualification testing was performed to ensure that these components would meet the constraints associated with subsea operations.