ABB Australia  announces the award of an order for leading power and automation technology group, ABB to install high voltage subsea cables for Statoil. The cables will supply power to the Troll A gas platform on the western coast of Norway.
Troll A concrete deep water structure is one of the world’s largest natural gas production platforms measuring 473 metres in height and weighing 1.2 million tons. Containing approximately 40% of the natural gas reserves on the Norwegian Continental Shelf, the platform can produce as much as 120 million cubic metres per day, and is a cornerstone of the gas supply to the European Continent.
ABB’s scope of contract includes pre-studies, cable laying and installation of 350km of high voltage AC and DC cables, as well as project management and related engineering services. While the AC cables will supply power to the safety and automation systems, the DC cables will supply power to two new gas compressors. With this new contract, ABB's orders in connection with the installation of the two new compressors on the Troll A platform amounts to $360 million.
When completed, the Troll A platform will be equipped with two HVDC Light installations from ABB, enabling the gas compressors on board to be powered from shore. The gas compressors serve to keep up production capacity and extend the lifespan of the platforms as the subsea reservoir pressure tends to drop over time on extraction of oil and gas, decreasing production unless the pressure is maintained by gas compression.
The compressors on the platform require a reliable, continuous power supply to maintain their operation, which is enabled by ABB's energy- and cost efficient electrical drive system powering the compressors with clean hydropower from the mainland grid, resulting in easier, more flexible operation of the compressors, compared to traditional onboard power generation.
According to Veli-Matti Reinikkala, head of ABB’s Process Automation division, reliable power from the shore will contribute to safe and efficient operations of the gas compressors on the platform. ABB is supplying the power-from-shore system to Statoil for the second time.
Troll A inaugurated its first power from shore solution in 2005, and the new system will be operational from 2014. Both systems are based on ABB's compact HVDC Light concept, ideal for the efficient transmission of power over vast distances.
ABB is the main supplier to all five power-from-shore installations on the Norwegian Continental Shelf.