Shell and core-type magnetic circuits in inductive SFCL under asymmetric faults

Nuno Vilhena, João Murta Pina, Roberto André Henrique De Oliveira

Research output: Contribution to conferencePosterpeer-review

Abstract

Asymmetric faults, namely phase to ground, are the most common in distribution grids To adopt superconducting based technologies, namely superconducting fault current limiters (utilities must be aware of the performance of these devices under such events, where a fault in e.g. a single phase may impact healthy ones This performance is evaluated in this work in low voltage prototypes, namely three phase inductive FCLs of transformer type where distinct magnetic circuits are applied, i.e. shell vs core type laminations In the latter, a conventional three legged transformer core is used in the limiter, while in the former a five legged core is employed, providing a low reluctance path for magnetic flux due to asymmetric faults, thus preventing it from affecting healthy phase(s) The performance of the devices is analysed under distinct asymmetric (and symmetric) faults, in order to provide guidelines for choosing the optimum configuration regarding also cost, weight and volume.
Original languageEnglish
Publication statusPublished - 5 Sep 2019
Event14th European Conference on Applied Superconductivity (EUCAS 2019), UK - Scotland, Glasgow, UK United Kingdom
Duration: 1 Sep 20195 Sep 2019
https://www.eucas2019.org/

Conference

Conference14th European Conference on Applied Superconductivity (EUCAS 2019), UK
Country/TerritoryUK United Kingdom
CityGlasgow
Period1/09/195/09/19
Internet address

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