Richtungserkennung eines widerstandsfähigen Erdschlusses und der Unterbrechung eines Leiters mittlerer Spannung

Details

Veröffentlichungs-Nr.

EP2533060

Aktenzeichen

EP12354028

Anmeldetag

27. April 2012

Veröffentlichung

30. Juli 2014

Erteilung

30. Juli 2014

Rechtsraum

EP

IPC

G01R31/02H02H1/00H02H5/10

Abstract

The device (100) has reception units to receive signals representing voltages of low voltage phase conductors (A-C) of a low-voltage outgoing line (15). An obtaining unit (110) obtains signals representing phase voltages (VA-VC) from the received voltage signals. A determination unit (122) determines a symmetrical component of a reverse voltage (Vi) of the outgoing line. A comparison unit (126) compares the reverse voltage with a triggering threshold. Independent claims are also included for the following: (1) a system for detecting a resistive fault in a medium-voltage network (2) a method for detecting a resistive earth fault in a medium-voltage network (3) method for detecting and locating a resistive earth fault in a medium-voltage network.

Anmelder

Firma

Schneider Electric Industries SAS

Land

🇫🇷 Frankreich

Fachgebiete