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http://dx.doi.org/10.9714/psac.2007.9.1.067

Design of an HTS Transformer with OLTC  

Choi, J.H. (한국산업기술대 에너지대학원)
Lee, S.W. (기초전력연구원)
Park, M.J. (기초전력연구원)
Joo, H.G. (한국산업기술대 메카트로닉스공학과)
Han, J.H. (한국산업기술대 에너지대학원)
Hahn, S.Y. (기초전력연구원)
Choi, K.D. (한국산업기술대 에너지대학원)
Publication Information
Progress in Superconductivity and Cryogenics / v.9, no.1, 2007 , pp. 67-71 More about this Journal
Abstract
HTS transformers which have been developed until now had only fundamental structures. Among the auxiliary functions of conventional transformers, voltage regulating is the most important one. For the voltage regulation, conventional transformers are equipped with on load tap changers (OLTCS). In this paper, we describe the possibility of the HTS transformer with OLTC. For the case study, we designed a single phase 33 MVA HTS transformer with OLTC. It is one of three individual HTS transformers which composes a 3 phase, 100 MVA transformer. It is expected to substitute for a 3 phase, 60 MVA conventional transformer in Korea. The parameters of an HTS transformer are varied due to the gap length between primary and secondary windings. The length was decided for the transformer to have the impedance of 12 %. Its size was limited to the one of the conventional transformer. The characteristics of the HTS transformer were analyzed in both case of having OLTC and not.
Keywords
ac loss; HTS transformer; On Load Tap Changer(OLTC); tertiary windings;
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  • Reference
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