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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 11555864 B1

PDFFull Text
Date of Patent:
Jan. 17, 2023

Filed:

Oct. 28, 2021

Optical monitoring to detect contamination of power grid components

Applicant:

Palo Alto Research Center Incorporated, Palo Alto, CA (US);

Inventors:

Saman Mostafavi, Charlotte, NC (US);

Hong Yu, Fremont, CA (US);

Ajay Raghavan, Mountain View, CA (US);

Peter Kiesel, Palo Alto, CA (US);

Assignee:

PALO ALTO RESEARCH CENTER INCORPORATED, Palo Alto, CA (US);

Attorney:

Mueting Raasch Group

Primary Examiner:

Raul J Rios Russo

Int. Cl.
CPC ...
G01R 29/20 (2006.01); G01R 31/62 (2020.01); G01J 3/18 (2006.01); G01L 1/24 (2006.01); H01F 27/08 (2006.01); H04B 3/46 (2015.01); G01N 17/00 (2006.01); H01F 27/02 (2006.01); G01R 19/25 (2006.01); G01R 35/02 (2006.01); G01R 31/72 (2020.01); G01R 31/52 (2020.01); G01R 1/28 (2006.01); G01R 31/34 (2020.01); G01R 15/20 (2006.01);
U.S. Cl.
CPC ...
G01R 31/62 (2020.01); G01J 3/1895 (2013.01); G01L 1/246 (2013.01); G01N 17/00 (2013.01); G01R 1/28 (2013.01); G01R 19/2513 (2013.01); G01R 29/20 (2013.01); G01R 31/52 (2020.01); G01R 31/72 (2020.01); G01R 35/02 (2013.01); H01F 27/02 (2013.01); H01F 27/08 (2013.01); H04B 3/46 (2013.01); G01R 15/207 (2013.01); G01R 31/346 (2013.01);
Abstract

A monitoring system includes an array of optical sensors disposed within a transformer tank. Each optical sensor is configured to have an optical output that changes in response to a temperature within the transformer tank. An analyzer is coupled to the array of optical sensors. The analyzer is configured to determine a sensed temperature distribution based on the sensed temperature. The sensed temperature distribution is compared to an expected distribution. Exterior contamination of the transformer tank is detected based on the comparison.

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