Verfahren und Vorrichtung zur Steuerung einer Lichtbogenunterdrückungsvorrichtung

Details

Veröffentlichungs-Nr.

EP3657620

Aktenzeichen

EP18207528

Anmeldetag

21. November 2018

Veröffentlichung

18. August 2021

Erteilung

18. August 2021

Rechtsraum

EP

IPC

H02H9/08

Abstract

A method and an apparatus for controlling an arc suppression device (10) having an adjustable admittance and being connected between a neutral point (21) of a three phase electric network (20) and earth, the apparatus being configured to determine a first and a second value of a zero sequence voltage of the three phase electric network (20), when an admittance of the arc suppression device (10) has a first and a second value, respectively, determine a symmetrical network admittance, which represents a sum of symmetrical phase-to-earth admittances of the three phase electric network (20), and an asymmetry admittance, which represents an asymmetry of phase-to-earth admittances of the three phase electric network (20) concentrated into one phase, and adjust the admittance of the arc suppression device (10) on the basis of the determined symmetrical network admittance and the determined asymmetry admittance.

Anmelder

Firma

ABB Schweiz AG

Land

🇨🇭 Schweiz

Fachgebiete