Surface flashover characteristics in liquid nitrogen for application of superconducting pancake coils

For the development of superconducting power apparatus, it is necessary to establish the dielectric technology in coolants like LN 2. Among the dielectric technology, surface flashover characteristics are studied with several simplified spacers at the structural aspects. Double pancake coil can appl...

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Bibliographic Details
Published in:Cryogenics (Guildford) 2002-06, Vol.42 (6), p.415-418
Main Authors: Kim, Sang-Hyun, Baek, Seung-Myeong, Kim, Young-Seok, Chung, Soon-Yong, Joung, Jong-Man
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electric coils
Electric potential
Exact sciences and technology
Flashover
High temperature superconductors
Nitrogen
Pancake coil
Physics
Spacer insulator
Superconductivity
Surface flashover
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Summary:For the development of superconducting power apparatus, it is necessary to establish the dielectric technology in coolants like LN 2. Among the dielectric technology, surface flashover characteristics are studied with several simplified spacers at the structural aspects. Double pancake coil can apply to transformer and fault current limiter, etc. To design dielectric system of high temperature superconducting transformer consisting of double pancake coils, this study discusses an effective insulator composition. Circular shape insulator divided into two parts should be inserted between coils and the insulator should cover electric stresses concentrated at the circumference of the coils which are in the same section of double pancake coils facing each other.
ISSN:0011-2275
1879-2235
DOI:10.1016/S0011-2275(02)00066-8