Techno-Commercial Aspects of Superconducting Transformers – A Case Study
B. Dheeraj Reddy1, K. Dinesh Kumar2, R. Sudha3

1B. Dheeraj Reddy, School of Electrical Engineering, VIT University, Vellore, India.
2K. Dinesh Kumar, School of Electrical Engineering, VIT University, Vellore, India.
3R. Sudha, School of Electrical Engineering, VIT University, Vellore, India
Manuscript received on March 11, 2013. | Revised Manuscript Received on March 12, 2013. | Manuscript published on March 25, 2013. | PP: 62-65 | Volume-1 Issue-5, March 2013. | Retrieval Number: E0231031513/2013©BEIESP
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Abstract: On invention of High Temperature Superconductors (HTS), there is a widespread talk that superconducting transformers can now be used extensively. But there are problems like lack of a suitable superconductor, cryogenic coolers and behavior of these transformers on faults and starting transients. This paper describes the problems with superconducting technology. A comparative study has been done with a conventional distribution transformer (DTR) and the outcome is tabulated. The results show, that superconducting transformers can give an additional efficiency of 0.3 to 0.5% at double the cost of conventional transformer with an unacceptable payback period. Hence HTS Transformers are used where they are essential and viable. A final purpose of this paper is given to create a method of analysis that allows others to conduct quantitative or optimised modelling about the future HTS transformers.
Keywords: Distribution Transformer (DTR), Fault Current Limiter (FCL), Superconductor, Superconducting Transformers (SCT), High Temperature Superconductivity (HTS).