Verfahren und Vorrichtung zum Differentiellen Schutz einer Dreiphasigen Elektrischen Verbindung

Details

Veröffentlichungs-Nr.

EP4322354

Aktenzeichen

EP22189895

Anmeldetag

11. August 2022

Veröffentlichung

9. April 2025

Erteilung

9. April 2025

Rechtsraum

EP

IPC

H02H3/26H02H7/26

Abstract

A method and an apparatus for differential protection of a three-phase electric connection (20) of a three-phase electric network (200), the apparatus (100A, 100B) being configured to determine a value for an operate quantity by forming at least one cumulative phasor sum of values of at least one electric phasor quantity based on residual currents at first and second points of the three-phase electric connection (20) and a residual voltage of the three-phase electric connection (20), to compare the determined value for the operate quantity with one or more thresholds or an operation characteristic, and to determine whether a detected earth fault is in the three-phase electric connection (20) between the first point and the second point of the three-phase electric connection (20).

Anmelder

Firmen

ABB Schweiz AG
ABB SCHWEIZ AG

Land

🇨🇭 Schweiz

Fachgebiete