Power Below the Waves: ABB Subsea Transformers

Press Release
Monday, May 13, 2013
Subsea Transformer Located in Åsgard Compressor Station: Schematic credit ABB

ABB has delivered subsea transformers for fields in the North & Norwegian seas & the Gulf of Mexico for operation at depths of up to 2,000 m.

Subsea transformers are an ABB innovation. Deployed in extreme conditions in ultra-deepwater, these high-tech workhorses provide the power for heavy-duty equipment on the sea floor - enabling declining oil and gas fields to be more productive and making new deepwater fields accessible.

ABB delivered the world’s first commercial subsea transformers in 1998 – a pioneering achievement that helped take subsea oil and gas extraction into a new and more productive dimension.

These robust, maintenance-free and exceptionally reliable transformers are used to power the field equipment on the seabed – boosters, pumps, compressors, pipeline heating systems, frequency converters and wave hubs.

They operate in some of the most extreme environments imaginable for transformers – at depths of several thousand meters and at distances of 50 to 100 km from the nearest platform or shore. The performance levels required of deep-sea equipment are very high, and reliability is decisive.

Designed for endurance
ABB subsea transformers are designed to operate in these demanding conditions of great depth and extreme atmospheric pressure. They are liquid-filled and pressure-compensated to keep the internal pressure close to that of the outside water by immersing the internals in liquid and eliminating all air- and gas-filled voids.

Since transformers get hot when they run, the type of liquid used inside the transformer is critical to its successful operation. ABB uses high-quality insulating oil with a low expansion coefficient and high compatibility with the other materials and components in the transformer. Because the transformer is housed in a solid tank that cannot expand, even when hot, the oil is degassed before installation and the tank is provided with a pressure compensating system.

High-grade steel is used for the casing to cope with the high pressure of deep-sea locations and to protect the transformer from the corrosive effects of seawater and colonization by living organisms.

Once installed on the seabed, no maintenance is required. Since the scope for repairs is limited, due to the expense of raising equipment to the surface, ABB has invested a great deal of resources to ensure that all components are of the highest quality and are rigorously tested to ensure a long maintenance-free operating life.

This stringent approach has ensured that all 20 ABB subsea transformers currently installed are operating reliably and safely and are providing exceptional performance and cost benefits for their owners.

Installations
ABB has delivered subsea transformers for fields in the North and Norwegian seas and the Gulf of Mexico for operation at depths of up to 2,000 m.

Later this year ABB will deliver nine subsea transformers for the world’s first subsea gas compressor station at the Åsgard oil and gas field in the Norwegian Sea. Although they will operate at a depth of 400 m, they are capable of operating in the deepest fields on the planet - 3,000 m below the surface.


Subsea Deepwater Transformer: Image credit ABB
 


Technology

Scorpene Submarine Data Leak: Setback to Indian Navy

India has began multiple investigations to determine the extent of damage caused by the reported massive leak of secret data detailing the combat and stealth capabilities

NOAA Engineers a Better Current Sensor for Mariners

Navigating into seaports is now safer and more efficient for mariners thanks to improved NOAA technology that ships rely on to give them information about currents.

SMM 2016: World Premieres from around the Globe

Some 50,000 trade visitors from the whole of the world are expected in Hamburg for the start of SMM in less than two weeks. And once again, it is fully booked – with a total of more than 2,

Offshore Energy

Heavy Lifting: Giant Pipe Racks Shipped for New FPSO

From Brazil to China and then back to Brazil, five pipe racks and three modules weighing a total of 1,871.51 metric tons and measuring 24,075 m³ will be transported

US Offshore Lease Sale Yields $18 Mln in High Bids

Today’s U.S. oil and gas Lease Sale 248 garnered $18,067,020 in high bids for 24 tracts covering 138,240 acres in the Western Gulf of Mexico Planning Area, announced

Canada May Ask Far-offshore Drillers to Pay Extra

Canada may ask oil companies to contribute to the hundreds of millions of dollars or more the country has to pay to an international body if they drill far offshore,

Underwater Engineering

Fugro, US Army Corps of Engineers Ink Mapping Deal

Fugro has been awarded a photogrammetric and LIDAR surveying and mapping contract by the U.S. Army Corps of Engineers, St. Louis District, Missouri. The agreement

Next Geosolutions Surveys Roman Ports

Next Geosolutions, an independent geoscience and engineering service provider, has secured a €1.25million (£1million) mapping and survey contract with Naples Port

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Pod Propulsion Port Authority Salvage Ship Electronics Ship Repair Ship Simulators Sonar Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.0995 sec (10 req/sec)