Arrangement for current limiting

US8238992B2 · kind B2 · utility

Assignee

• NEXANS · FR

Inventors

• Rainer Soika · Hannover, DE
• Mark Stemmle · Hannover, DE

Key dates

• Filing date: Dec 16, 2009
• Grant date: Aug 7, 2012
• Expiry date: Nov 19, 2030

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01F2006/001
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

An arrangement is specified for current limiting having a superconducting cable (SK) which is arranged in a cryostat (KR) which has an outer wall which comprises two metallic tubes (1, 2) which are arranged concentrically with respect to one another and between which vacuum insulation (3) is incorporated. The cryostat (KR) surrounds a free space (FR) for a coolant to pass through, in which free space (FR) the superconducting cable (SK) is arranged. It also has an inner wall (IW) which surrounds a cylindrical cavity (HR) and likewise comprises two metallic tubes (4, 5) which are arranged concentrically with respect to one another, between which vacuum insulation (6) is incorporated, and which is located within the outer wall (AW) and is separated therefrom by the free space (FR). The superconducting cable (SK) which has a superconducting conductor, a dielectric surrounding the same and a superconducting screen which is arranged above the same, is wound in a helical shape around the inner wall (IW). An iron core (7) is arranged in the cylindrical cavity (HR).