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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.:

US 10852359 B1

PDFFull Text
Date of Patent:
Dec. 01, 2020

Filed:

Dec. 05, 2017

Apparatus and method for dc-component-based fault classification of three-phase distribution power cables with magnetic sensing

Applicant:

The University of Hong Kong, Hong Kong, CN;

Inventors:

Wing Tat Pong, Tsuen Wan, HK;

Ke Zhu, Hong Kong, CN;

Assignee:

The University of Hong Kong, Hong Kong, CN;

Attorney:

Leason Ellis LLP

Primary Examiner:

Alvaro E Fortich

Int. Cl.
CPC ...
G01R 31/50 (2020.01); G01R 31/08 (2020.01); G01R 15/20 (2006.01); H02H 1/04 (2006.01); G01R 19/165 (2006.01); H02H 3/50 (2006.01); G01R 31/00 (2006.01);
U.S. Cl.
CPC ...
G01R 31/50 (2020.01); G01R 15/20 (2013.01); G01R 31/083 (2013.01); G01R 31/085 (2013.01); G01R 19/16571 (2013.01); G01R 31/001 (2013.01); G01R 31/086 (2013.01); H02H 1/04 (2013.01); H02H 3/50 (2013.01);
Abstract

A DC-component-based fault classification apparatus and method for a three-phase power distribution cable utilizes the reconstructed three-phase currents by measuring the magnetic field around the cable with an array of magnetic sensors arranged around the cable surface. A magnetic shield houses the magnetic sensors and blocks background magnetic fields. A data acquisition system acquires analog signals from the sensors and a processing system extracts DC components in the analog signals for the phases during the transient period after a fault. The potential DC components are extracted by mathematical morphology. These DC components arise in the faulted phases when a fault occurs since there is a large current change in the inductive power network.

Find Patent Forward Citations

Pong, Wing. (2020). Apparatus and method for dc-component-based fault classification of three-phase distribution power cables with magnetic sensing (U.S. Patent No. 10852359). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10852359

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