XLPE INSULATION FOR DC-APPLICATION, A NEW AND REVOLUTIONARY APPLICATION

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XLPE INSULATION FOR DC-APPLICATION, A NEW AND REVOLUTIONARY APPLICATION
21 June 2000 - Borealis A/S

Polymeric cables have to a great extent replaced fluid-filled cables in AC distribution and partly in AC transmission systems. The situation is, however, different for high voltage DC-systems as the build-up of space charges has been seen as a limiting factor. With the introduction of new solid state AC/DC and DC/AC converters the need for suitable DC-insulation has increased and Borealis has, together with ABB, after several years of co-operation designed a suitable polymeric insulation system.

With the introduction of new solid state AC/DC and DC/AC converters the need for suitable DC-insulation has increased and Borealis has, together with ABB, after several years of co-operation designed a suitable polymeric insulation system.

Materials that can be extruded using conventional XLPE lines have been produced for a project to connect a Windmill generator of 50 MW 80kV DC located on the southern tip of the isle of Gotland (Gotland is also known for the world's first commercial HVDC-transmission in 1954) with the present AC-systems come 70 km away. The "HVDC Light" -cable, as it is known, will be installed and taken into service during the summer of 1999, but several other projects in different parts of the world are already on the drawing board.

http://www.borealisgroup.com

About: Borealis A/S
Borealis is a leading provider of plastics solutions with more than 40 years of experience in polyethylene (PE) and polypropylene (PP). Borealis solutions are converted by its customers into everyday products such as food packaging, medical devices, diapers, pipes, automotive parts and power cables.

Borealis is owned 50% by the Norwegian oil company, Statoil, and 50% by IOB Holdings, owned equally by OMV, the Austrian oil and natural gas group, and by the International Petroleum Investment Company (IPIC) of Abu Dhabi.

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