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
 

Maritime Reporter August 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Technology

ICTSI Manila Starts Container Booking System

The Manila International Container Terminal (MICT) in the Port of Manila has started implementing a vehicle appointment system called Terminal Appointment Booking

Rosneft, Gazprom to Receive Four Arctic Fields

Ministry of the Environment sent to the government documents on the transfer of "Rosneft" and "Gazprom" licenses for the development of four more fields on the Arctic shelf,

Occurrence of Humpback Whales at Franz Josef Land Recorded

Scientists first documented occurrence of humpback whales near the archipelago of Franz Josef Land. Experts attribute this to the successful development of their populations.

Offshore Energy

Rosneft, Gazprom to Receive Four Arctic Fields

Ministry of the Environment sent to the government documents on the transfer of "Rosneft" and "Gazprom" licenses for the development of four more fields on the Arctic shelf,

Russia’s Novatek Sells 10% Of Yamal LNG To Chinese Fund

Russia’s second-biggest gas producer Novatek is selling a 9.9 percent stake worth an estimated US$1.4 billion in its Yamal liquefied natural gas (LNG) project

Former CIA Spy Ship Becomes Victim of Oil Slump

A ship built by the CIA for a secret Cold War mission in 1974 to raise a sunken Soviet sub is heading to the scrap yard, a victim of the slide in oil prices.   Christened the Hughes Glomar Explorer,

Underwater Engineering

Rosneft, Gazprom to Receive Four Arctic Fields

Ministry of the Environment sent to the government documents on the transfer of "Rosneft" and "Gazprom" licenses for the development of four more fields on the Arctic shelf,

Virginia-Class Submarine Named USS Iowa

Secretary of the Navy Ray Mabus hosted a ship-naming ceremony today in Ames, Iowa to announce that SSN 797, a Virginia-class attack submarine, will bear the name USS Iowa.

SMOE Wins $1bln Multi-platform Culzean Contract

Singapore's offshore services provider Sembcorp Marine has won an engineering, procurement and construction (EPC) contract worth over USD1 billion for the Culzean

 
 
Maritime Contracts Maritime Security Maritime Standards Navigation Offshore Oil Pod Propulsion Salvage Ship Simulators Shipbuilding / Vessel Construction Sonar
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: 0.6610 sec (2 req/sec)