NO20091450L - Monitoring temperature on high voltage line - Google Patents

Monitoring temperature on high voltage line

Info

Publication number
NO20091450L
NO20091450L NO20091450A NO20091450A NO20091450L NO 20091450 L NO20091450 L NO 20091450L NO 20091450 A NO20091450 A NO 20091450A NO 20091450 A NO20091450 A NO 20091450A NO 20091450 L NO20091450 L NO 20091450L
Authority
NO
Norway
Prior art keywords
probe
bragg grating
optical fiber
bragg
high voltage
Prior art date
Application number
NO20091450A
Other languages
Norwegian (no)
Other versions
NO333161B1 (en
Inventor
Leif Bjerkan
Tarun Kumar Gangopadhyay
Kamal Dasgupta
Somnath Bandyopadhyay
Palas Biswas
Shyamal Bhadra
H S Maiti
Original Assignee
Sintef
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sintef filed Critical Sintef
Priority to NO20091450A priority Critical patent/NO333161B1/en
Priority to PCT/EP2010/054960 priority patent/WO2010119095A1/en
Publication of NO20091450L publication Critical patent/NO20091450L/en
Publication of NO333161B1 publication Critical patent/NO333161B1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/005—Power cables including optical transmission elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00—Overhead installations of electric lines or cables

Landscapes

  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

Foreliggende oppfinnelse vedrører et system for overvåkning av online temperatur for høyspentkabler i luftstrekk, omfattende minst en optisk fiber festet til kabelen, og ovennevnte optiske fiber omfattende av minst ett Bragg-gitter (FBG) med kjente refleksjonskarakteristikker, en lyskilde for transmittering av lys innen et kjent område av bølgelengder inn i ovennevnte optiske fiber, og måleanordninger for deteksjon av lys reflektert fra ovennevnte Bragg-gitter(e) i fiberen og for gjenkjennelse av lys reflektert fra hvert Bragg-gitter basert på deres kjente refleksjonskarakteristikker og deres unike samsvar med temperatur for Bragg-gitteret. Bragg-gitteret er montert i en probe, der proben er montert i og termisk koblet til et hylster (7) som blir montert på og termisk koblet til kabelen (21), hvori proben har en sylindrisk form og er montert i hylsteret i en åpning (9) som hovedsakelig har det samme tverrsnittet som proben, men en lengde som overskrider lengden til proben, for slik å muliggjøre innbyrdes variasjoner i temperaturene mellom proben og hylsteret uten å utsette Bragg-gitteret for belastning.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air temperature monitoring system for high voltage cables comprising at least one optical fiber attached to the cable and said optical fiber comprising at least one Bragg grid (FBG) with known reflection characteristics, a light source for transmitting light within a known range of wavelengths into the above optical fiber, and measuring devices for detecting light reflected from the above Bragg grating (s) in the fiber and for recognizing light reflected from each Bragg grating based on their known reflectance characteristics and their unique temperature compliance Bragg grating. The Bragg grid is mounted in a probe, wherein the probe is mounted in and thermally connected to a sleeve (7) which is mounted on and thermally connected to the cable (21), wherein the probe has a cylindrical shape and is mounted in the sleeve in an opening. (9) having substantially the same cross-section as the probe, but a length exceeding the length of the probe, to allow for mutual variations in the temperatures between the probe and the casing without subjecting the Bragg grating to strain.

NO20091450A 2009-04-15 2009-04-15 Monitoring temperature on high voltage line NO333161B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NO20091450A NO333161B1 (en) 2009-04-15 2009-04-15 Monitoring temperature on high voltage line
PCT/EP2010/054960 WO2010119095A1 (en) 2009-04-15 2010-04-15 Monitoring temperature of an overhead electrical line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO20091450A NO333161B1 (en) 2009-04-15 2009-04-15 Monitoring temperature on high voltage line

Publications (2)

Publication Number Publication Date
NO20091450L true NO20091450L (en) 2010-10-18
NO333161B1 NO333161B1 (en) 2013-03-18

Family

ID=42542719

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20091450A NO333161B1 (en) 2009-04-15 2009-04-15 Monitoring temperature on high voltage line

Country Status (2)

Country Link
NO (1) NO333161B1 (en)
WO (1) WO2010119095A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107588863A (en) * 2017-08-08 2018-01-16 安徽博诺思信息科技有限公司 A kind of cable shaft system for detecting temperature and method

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5140257A (en) * 1984-06-22 1992-08-18 Davis Murray W System for rating electric power transmission lines and equipment
WO1986001303A1 (en) 1984-08-13 1986-02-27 United Technologies Corporation Method for impressing grating within fiber optics
US5380995A (en) 1992-10-20 1995-01-10 Mcdonnell Douglas Corporation Fiber optic grating sensor systems for sensing environmental effects
US5397891A (en) 1992-10-20 1995-03-14 Mcdonnell Douglas Corporation Sensor systems employing optical fiber gratings
US5426297A (en) 1993-09-27 1995-06-20 United Technologies Corporation Multiplexed Bragg grating sensors
US5646401A (en) 1995-12-22 1997-07-08 Udd; Eric Fiber optic grating and etalon sensor systems
AU778263B2 (en) * 1998-12-04 2004-11-25 Cidra Corporation Strain-isolated optical temperature sensor
NO310125B1 (en) 1999-05-06 2001-05-21 Leiv Eiriksson Nyfotek As System for monitoring high voltage cables in air tension
US6558036B2 (en) * 2000-11-29 2003-05-06 Weatherford/Lamb, Inc. Non-intrusive temperature sensor for measuring internal temperature of fluids within pipes
DE102004020324A1 (en) * 2003-05-14 2005-03-10 Siemens Ag Railway overhead power supply electrical cable optical monitoring procedure uses Bragg grating fibre optical sensors to monitor temperature and strain
US7398697B2 (en) * 2004-11-03 2008-07-15 Shell Oil Company Apparatus and method for retroactively installing sensors on marine elements

Also Published As

Publication number Publication date
NO333161B1 (en) 2013-03-18
WO2010119095A1 (en) 2010-10-21

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Legal Events

Date Code Title Description
CHAD Change of the owner's name or address (par. 44 patent law, par. patentforskriften)

Owner name: SINTEF TTO AS, NO

MM1K Lapsed by not paying the annual fees