Verfahren zur Erkennung eines Fehlers in einer Geschützten Leitung in einem Energieübertragungssystem

Details

Veröffentlichungs-Nr.

EP4412018

Aktenzeichen

EP23154525

Anmeldetag

1. Februar 2023

Veröffentlichung

7. August 2024

Rechtsraum

EP

IPC

H02H3/40H02H3/38G01R31/08

Abstract

The present disclosure relates to a method of detecting a fault in a protected line (114) constituting at least a portion of a transmission line (101) in an alternating current, AC, power transmission system (100). The transmission line has at least one phase, and the AC power transmission system has at least one intelligent electric device, IED, (111, 112) connected with the transmission line. The method comprises:- determining, for each phase, based on measurements at the at least one lED of at least one of a phase voltage and a phase current, at least one electric parameter;- determining sequence components at a chosen point of the transmission line, on basis of the electric parameters;- determining, for each phase, an operating quantity, OP, on basis of at least one of a first and a second sequence component of the sequence components;- determining, for each phase, a restraining quantity, RST, on basis of a third sequence component of the sequence components; and- comparing, for at least one phase, a property of the OP with a corresponding property of an associated RST, which is the RST for the same phase as the OP.

Anmelder

Firma

Hitachi Energy Ltd

Land

🇨🇭 Schweiz

Fachgebiete