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Title: Optical monitoring to detect contamination of power grid components

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.

Inventors:
; ; ;
Issue Date:
Research Org.:
Palo Alto Research Center Inc., Palo Alto, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1860028
Patent Number(s):
11163017
Application Number:
16/662,655
Assignee:
Palo Alto Research Center Incorporated (Palo Alto, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
G - PHYSICS G01 - MEASURING G01K - MEASURING TEMPERATURE
DOE Contract Number:  
OE0000872
Resource Type:
Patent
Resource Relation:
Patent File Date: 10/24/2019
Country of Publication:
United States
Language:
English

Citation Formats

Mostafavi, Saman, Yu, Hong, Raghavan, Ajay, and Kiesel, Peter. Optical monitoring to detect contamination of power grid components. United States: N. p., 2021. Web.
Mostafavi, Saman, Yu, Hong, Raghavan, Ajay, & Kiesel, Peter. Optical monitoring to detect contamination of power grid components. United States.
Mostafavi, Saman, Yu, Hong, Raghavan, Ajay, and Kiesel, Peter. Tue . "Optical monitoring to detect contamination of power grid components". United States. https://www.osti.gov/servlets/purl/1860028.
@article{osti_1860028,
title = {Optical monitoring to detect contamination of power grid components},
author = {Mostafavi, Saman and Yu, Hong and Raghavan, Ajay and Kiesel, Peter},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2021},
month = {11}
}

Works referenced in this record:

Lo-Cost Fiber Optic Sensor Array for Simultaneous Detection of Multiple Parameters
patent-application, October 2019


Fiber Optic Sensing System for Grid-Based Assets
patent-application, April 2021


Remote Communication and Powering of Sensors for Monitoring Pipelines
patent-application, December 2017


Power distribution transformer and tank therefor
patent-application, July 2006


Optical sensing system for wellhead equipment
patent, December 2010


Time- and Wavelength-Multiplexed Wavelength Shift Detection for High-Resolution, Low-Cost Distributed Fiber-Optic Sensing
journal, October 2017


Optical monitoring to detect corrosion of power grid components
patent, January 2021


Fiber Optic Sensing System for Grid-Based Assets
patent-application, April 2021


Optical Monitoring for Power Grid Systems
patent-application, January 2019


Evaluation condition of transformer based on infrared thermography results
conference, July 2009