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Open phase faults in the external power supply systems of a nuclear power generating station: symmetrical components analysis and EMTP validation

L. Rouco, A. Pontes Jiménez, J. Archilla Martín-Sanz

This paper investigates whether existing protection schemes would detect an open phase fault in the power supply systems of a 1092 MW Spanish nuclear power generating station. This investigation follows to the 2012 event at unit 2 of Byron station, Illinois, USA. Symmetrical components method is proposed to draw fundamental conclusions. The results of the symmetrical components analysis are validated using EMTP simulations.

Keywords: Open phase fault, nuclear power generating station, power supply systems, symmetrical components, EMTP simulation

Published: July 2015.

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