Concept Design of a Portable Superconducting Transformer Based on Conductors in Tube Cables

Portable substations based on large capacity transformers have shown great advantages for practical demand from natural disaster area and remote area, as well as the short-term power grid maintenance. However, the capacity of traditional portable transformer is restricted by transportation weight li...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2021-11, Vol.31 (8), p.1-5
Main Authors: Sheng, Jie, Hu, Min, Li, Wenrong, Wang, Xueilang, Shen, Boyang, Li, Zhuyong, Jin, Zhijian
Format: Article
Language:English
Subjects:
Bending
Bending diameter
Cables
Concept design
Conductors
Conductors in tube cable
Electric power grids
Finite element method
High-temperature superconductors
Low voltage
Natural disasters
Oil insulation
Portability
Portable transformer
Power cables
Power transformer insulation
Substations
Superconducting cables
Superconductivity
Transformers
Weight reduction
Winding
Windings
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Summary:Portable substations based on large capacity transformers have shown great advantages for practical demand from natural disaster area and remote area, as well as the short-term power grid maintenance. However, the capacity of traditional portable transformer is restricted by transportation weight limit in the application area. In this paper, concept design of a 110 kV/63 MVA superconducting transformer with compact size and light weight is presented. The superconducting materials used in this transformer are all in structure of a so-called conductors in tube (CIT) cable. Firstly, the electrical design of portable transformer is carried out by using traditional transformer design manual. Then, both simulations and experiments are carried out to verify the feasibility of CIT cables. Finally detail design of CIT cables for both high voltage winding and low voltage winding are presented based on finite element method.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2021.3094457