Method and device for identifying the location of a fault on a line of an electrical power supply network

US11531051B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Cezary Dzienis · Falkensee, DE
• Andreas Jurisch · Kremmen, DE
• Igor Kogan · Berlin, DE

Key dates

• Filing date: Aug 13, 2021
• Grant date: Dec 20, 2022
• Expiry date: Aug 13, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y04S10/52
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method identifies a location of a fault on a faulty line of an electrical power supply network having a plurality of lines, a plurality of inner nodes, and at least three outer nodes. The outer nodes each bound a line and are provided with measurement devices which are used to measure high-frequency current and/or voltage signals. To locate faults, one of the outer nodes is selected as the starting node for the search for the fault location. Starting from the starting node, paths to the other outer nodes are determined, and that those paths on which the fault location could be located are selected. A line on which the fault location could be located, in principle, is identified for each of the selected paths using the respective times at which the traveling waves arrive, and a potential fault location is determined for the respectively identified line.