Abtastwert-basiertes Schutzsystem und -verfahren für eine doppelt eingespeiste Induktionsmaschine mit elektrisch variabler Drehzahl

Details

Veröffentlichungs-Nr.

EP2830177

Aktenzeichen

EP13177935

Anmeldetag

25. Juli 2013

Veröffentlichung

30. März 2016

Erteilung

30. März 2016

Rechtsraum

EP

IPC

H02H7/06H02H7/08H02H3/06

Abstract

A protection system for an electrical variable speed doubly fed induction machine (IM) having a stator (S) and a rotor (R), comprising instrument transformers (CTR1, CTR2, CTS1, CTS2, VTR1, VTR2) and a protection relay having at least one protection module configured: - to detect faults from measurement values received from the instrument transformers, - when a fault is detected, to set a start signal and start a trip timer, - to set a trip signal when the trip timer is expired, - to pause the trip timer and to start a reset timer when detection of the fault ends, - when no new fault is detected before expiration of the reset timer, to hold the start signal and the trip signal in their current states, - when no new fault is detected at expiration of the reset timer, to reset the start signal, the trip signal and the trip timer, - when a new fault is detected before expiration of the reset timer, to stop pause of the trip timer.

Anmelder

Firmen

General Electric Technology GmbH
ALSTOM Technology Ltd

Land

🇨🇭 Schweiz

Fachgebiete