Analysis of LN sub(2) cooling system and electrical insulation contraction for high Tc superconducting cables

The LN sub(2) cooling system for fully flexible three phase high Tc superconducting cables was addressed in this paper. Explicit formulas were presented to calculate the cooling capacity and stability. Thereafter, the stress cracking and the thermal contraction of electrical insulation at low temper...

Full description

Saved in:
Bibliographic Details
Published inIEEE transactions on power delivery Vol. 14; no. 3; pp. 743 - 749
Main Authors Hao, Fengnian, Wu, Weihan
Format Journal Article
LanguageEnglish
Published 01.01.1999
Subjects
Cables
Cooling systems
Electrical insulation
Insulation
Mathematical models
Stress cracking
Superconductivity
Thermal contraction
Online AccessGet full text

Cover

More Information
Summary:The LN sub(2) cooling system for fully flexible three phase high Tc superconducting cables was addressed in this paper. Explicit formulas were presented to calculate the cooling capacity and stability. Thereafter, the stress cracking and the thermal contraction of electrical insulation at low temperature were analyzed theoretically and experimentally. The thermal contractions of the ultra-high molecular weight polyethylene insulation layer of short model cables were measured with the moire method and strain gauge method. The measured result was in good agreement with the theoretical result. Both the theoretical and experimental results confirmed that the insulation does not suffer from the stress cracking problem on cooldown, and it is an excellent candidate for the electrical insulation at low temperature.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0885-8977
DOI:10.1109/61.772309