Zeitausrichtungsverfahren einer Differenzialschutzvorrichtung, Differenzialschutzvorrichtung und Differenzialschutzsystem

Details

Veröffentlichungs-Nr.

EP4220879

Aktenzeichen

EP23305113

Anmeldetag

30. Januar 2023

Veröffentlichung

23. Oktober 2024

Erteilung

23. Oktober 2024

Rechtsraum

EP

IPC

H02H1/00G01R19/25G05B19/04H02H3/30H02H7/22H02H7/26

Abstract

A time alignment method for a differential protection device, the differential protection device (402, 404) and a differential protection system are disclosed. The time alignment method includes obtaining, from a merging unit, a plurality of current sampled values and a count value of each current sampled values (S510); resampling the plurality of current sampled values with sampling frequency of J points/cycle to obtain a plurality of current resampled values (S520); and performing Fourier transform on the plurality of current resampled values to obtain a plurality of temporally arranged current Fourier values, the plurality of current Fourier values includes a reference current Fourier value corresponding to the sampling moment of the current sampled value whose count value is the first value in the plurality of current sampled values, and the reference current Fourier value is determined based on the reference current resampled value and the J-1 current resampled values that temporally arranged before the reference current resampled value (S530).Fig. 5

Anmelder

Firma

SCHNEIDER ELECTRIC INDUSTRIES SAS

Land

🇫🇷 Frankreich

Fachgebiete