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27 August 2017 to 1 September 2017
RAI Congress Center, Amsterdam, The Netherlands
Europe/Amsterdam timezone

A Study on the V-t Characteristics of PPLP according to Electric Field Uniformity for a Superconducting Transformer

30 Aug 2017, 13:15
1h 45m
Posters Area

Posters Area

Poster Presentation of 1h45m F9 - Electrical Insulation for Magnets Wed-Af-Po3.10


Hongseok Lee (Korea National University of Transportation)


The application of high voltage superconducting apparatuses is considered as one of the most promising countermeasures against the increased power consumption. In order to ensure the electrical safety of high voltage superconducting apparatuses such as superconducting transformers and superconducting cables, the electrical insulation design should be conducted considering aging characteristics. In this study, V-t characteristics of polypropylene laminated paper (PPLP) known as the most proper solid insulation material for a high voltage superconducting transformer. V-t characteristics of PPLP according to its electric field uniformity are experimented analyzed to ensure the reliability of long-term operation. Dielectric experiments are conducted in saturated liquid nitrogen of 77 K in temperature. Dielectric experiments on V-t characteristics of PPLP are performed with four kinds of sphere-plane electrode systems according to various pressures. It is found that aging characteristics of PPLP are dependent on the electric field uniformity as well as pressure.

Submitters Country Republic of Korea

Primary authors

Hyoungku Kang (Korea National University of Transportation) Hongseok Lee (Korea National University of Transportation)


Ms Onyou Lee (Electrical Engineering, Korea National University of Transportation)

Presentation Materials