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Instumentation • Computing • Control


sand and erosion, corrosion, and virtual flow metering. Fieldwatch’s distributed and modular architecture enables easy remote access for all users needing access to detailed readings, configuration and diagnostics data from Roxar instruments.


Power link


ABB has changed the way that automation is powered at BP’s Valhall multi-platform complex in the North Sea after successfully commissioning a power link between it and the southern Norwegian mainland grid.


Te HVDC Light (high-voltage direct current) link is a highly reliable, cable based state-of-the-art power transmission system that will enable power from shore to supply the offshore complex. Te power link will allow BP to substitute the use of offshore gas turbines to generate electric power thereby eliminating up to 300 000t/y of carbon dioxide – equivalent to the annual emissions of around 125 000 modern European cars.


Duncan MacLeod, power from shore project manager at BP in Norway, said: “Replacing gas turbine generators with power from the shore supplied through this HVDC link means that we lower our operating and maintenance costs significantly. It also enhances safety and facilitates risk management through the elimination of gas ignition sources.” Other advantages include improvements in the


working environment by eliminating exhaust fumes and lowering platform noise and vibration levels,” he added.


Converter station Te installation includes one converter station onshore connected by an HVDC submarine cable to a second converter on the platform, about 294km offshore. It allows 78MW of power to be supplied from the mainland to run the field facilities, including a new production and living quarter platform (Fig. 1). Te new platform is being commissioned by


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Fig. 1. The HVDC Light (high-voltage direct current) link will allow BP to substitute the use of offshore gas turbines to generate electric power at Valhall’s new production and living quarter platform.


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