Title: Fiber optic sensing system for grid-based assets

Abstract

A sensor system includes a sensor network comprising at least one optical fiber having one or more optical sensors. At least one of the optical sensors is arranged to sense vibration of an electrical device and to produce a time variation in light output in response to the vibration. A detector generates an electrical time domain signal in response to the time variation in light output. An analyzer acquires a snapshot frequency component signal which comprises one or more time varying signals of frequency components of the time domain signal over a data acquisition time period. The analyzer detects a condition of the electrical device based on the snapshot frequency component signal.

Inventors:

Kiesel, Peter; Raghavan, Ajay; Karin, Todd; Chen, Qiushu

Issue Date:

2023-08-08

Research Org.:

Palo Alto Research Center Incorporated, Palo Alto, CA (United States)

Sponsoring Org.:

USDOE Office of Electricity (OE)

OSTI Identifier:

2222076

Patent Number(s):

11719559

Application Number:

16/665,015

Assignee:

Palo Alto Research Center Incorporated (Palo Alto, CA)

Patent Classifications (CPCs):

G - PHYSICS G01 - MEASURING G01D - MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE

G - PHYSICS G01 - MEASURING G01H - MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES

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G - PHYSICS G01 - MEASURING G01D - MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE

G01D5/35312 - {using a Fabry Perot}
G01D5/35316 - {using a Bragg gratings}
G01D5/35345 - {using Amplitude variations to detect the measured quantity}
G01D5/35374 - {Particular layout of the fiber}

G - PHYSICS G01 - MEASURING G01H - MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES

G01H9/004 - {using fibre optic sensors

G - PHYSICS G01 - MEASURING G01K - MEASURING TEMPERATURE

G01K11/32 - using changes in transmission, scattering or fluorescence in optical fibres {
G01K11/3206 - {at discrete locations in the fibre, e.g. by means of Bragg gratings}

G - PHYSICS G01 - MEASURING G01L - MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE

G01L1/242 - {the material being an optical fibre}
G01L1/246 - {using integrated gratings, e.g. Bragg gratings}

G - PHYSICS G01 - MEASURING G01M - TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES

G01M11/083 - {by using an optical fiber in contact with the device under test [DUT]}
G01M11/086 - {Details about the embedment of the optical fiber within the DUT}

G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES

G01R31/1209 - {using acoustic measurements
G01R31/62 - Testing of transformers

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS

H01F27/402 - {Association of measuring or protective means}

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DOE Contract Number:  

OE0000872

Resource Type:

Patent

Resource Relation:

Patent File Date: 10/28/2019

Country of Publication:

United States

Language:

English