The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 13, 2021
Filed:
Jan. 18, 2018
Siemens Aktiengesellschaft, Munich, DE;
Cezary Dzienis, Dallgow-Doeberitz, DE;
Andreas Jurisch, Schwante, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A method for determining the fault location of a ground fault relating to a line of a three-phase electrical energy supply network with an ungrounded neutral point, in which current and voltage values are measured at one line end of the line. Following the occurrence of a ground fault on the line, the location of the fault is defined using the measured current and voltage values. The measured current and voltage values are converted into α-components and 0-components of a Clarke transformation, a location-dependent characteristic function of α-component and 0-component fault voltage values is defined in each case using the converted components and a propagation model for travelling waves on the line. The fault location is determined to be the location at which the two characteristic functions exhibit the closest match.