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Breakdown, V-t and Degradation Characteristics of Insulation in Liquid Nitrogen for HTS Transformer  

Nguyen, Van-Dung (경상대 전기전자공학부)
Joung, Jong-Man (한국전력공사 전력연구원 배전기술그룹)
Baek, Seung-Myeong (경상대 전기전자공학부)
Lee, Chang-Hwa (경상대 전기전자공학부)
Suck, Song-Hee (효성중공업연구소)
Kim, Sang-Hyun (경상대 전기전자공학부)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers C / v.53, no.6, 2004 , pp. 316-323 More about this Journal
Abstract
HTS transformer is one of the most promising devices to supply enough electric energy for quick increase consumption. However, for practical design of the HTS transformer, it is necessary to establish the research on breakdown, V-t characteristics, degradation, and so on. In this paper, we discussed breakdown characteristics and V-t characteristics of polyimide/L$N_2$ and glass fiber reinforced plastic/$LN_2$ composite insulations. These composite insulations have been used as turn-to-turn and layer-to-layer insulations for HTS transformer respectively, Moreover, we investigated the degradation of these insulation samples after breakdown using microscope and SEM photograph.
Keywords
HTS transformer; Breakdown; V-t characteristics; Composite insulations Degradation;
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