Cryostat for use with a superconducting transformer

US6324851A · kind A · utility

Assignee

• ABB Power T&D Company Inc. · US

Inventors

• Paul Szasz · Heidelberg, DE
• Harald Reiss · Heidelberg, DE
• Thomas Baldwin · Cary, US
• Varagur R. Ramanan · Cary, US
• Dietrich Bonmann · Meckenheim, DE

Key dates

• Filing date: Dec 9, 1999
• Grant date: Dec 4, 2001
• Expiry date: Dec 9, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E40/60
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A cryostat for a superconducting transformer is provided that includes non-conducting load bearing insulation and is adapted for use with a superconducting transformer. In addition, the cryostat prevents the formation of closed loop stray currents on its outer case. The cryostat contains the winding sets and other related electrical equipment of a transformer. The cryostat generally comprises a cryogenic tank having an outer wall, a non-conducting liner, and a load bearing insulation layer disposed therebetween. The tank holds a liquid or gaseous cryogenic coolant into which the components of the transformer are immersed. A plurality of passages allow the passage of the limbs of the iron core of the transformer through the tank.