Betrieb einer Intelligenten Elektronischen Vorrichtung Während einer Strompendelung

Details

Veröffentlichungs-Nr.

EP3757581

Aktenzeichen

EP19191785

Anmeldetag

14. August 2019

Veröffentlichung

4. Oktober 2023

Erteilung

4. Oktober 2023

Rechtsraum

EP

IPC

G01R19/25G01R19/02G01R31/08G01R19/04

Abstract

Examples of operating an Intelligent Electronic Device (IED) during power swings, are described. In an example, voltage measurements for a phase is received and sampled. Root mean square (RMS) values of the voltage samples is calculated based on the voltage measurements. Delta quantities for each phase are calculated based on the RMS values. Each of the RMS values and delta quantities are associated with respective sampling instants. In response to a delta quantity being greater than a predefined threshold, a peak delta quantity is detected. A time interval between a sampling instant associated with the peak delta quantity and a sampling instant associated with a first delta quantity is determined. Based on a comparison of the time interval with a threshold time, a disturbance condition may be detected as a power swing and consequently, fault detection at the IED may be blocked.

Anmelder

Firmen

Hitachi Energy Ltd
Hitachi Energy Switzerland AG
ABB Power Grids Switzerland AG
ABB Schweiz AG

Land

🇨🇭 Schweiz

Fachgebiete