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CA2239722C - Voltmetre electro-optique - Google Patents

Voltmetre electro-optique Download PDF

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Publication number
CA2239722C
CA2239722C CA002239722A CA2239722A CA2239722C CA 2239722 C CA2239722 C CA 2239722C CA 002239722 A CA002239722 A CA 002239722A CA 2239722 A CA2239722 A CA 2239722A CA 2239722 C CA2239722 C CA 2239722C
Authority
CA
Canada
Prior art keywords
voltage
sensor
conductor
routing
components
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
CA002239722A
Other languages
English (en)
Other versions
CA2239722A1 (fr
Inventor
Gregory K. Woods
Todd W. Renak
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lockheed Idaho Technologies Co
Original Assignee
Lockheed Idaho Technologies Co
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
Priority claimed from US08/569,338 external-priority patent/US5892357A/en
Priority claimed from US08/570,152 external-priority patent/US5731579A/en
Application filed by Lockheed Idaho Technologies Co filed Critical Lockheed Idaho Technologies Co
Priority to CA002401771A priority Critical patent/CA2401771C/fr
Publication of CA2239722A1 publication Critical patent/CA2239722A1/fr
Application granted granted Critical
Publication of CA2239722C publication Critical patent/CA2239722C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/06—Measuring leads; Measuring probes
    • G01R1/067—Measuring probes
    • G01R1/07—Non contact-making probes
    • G01R1/071—Non contact-making probes containing electro-optic elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

L'invention concerne un voltmètre électro-optique permettant de mesurer des tensions sans erreurs notables imputables aux conducteurs voisins ou aux perturbations de proximité. Le voltmètre comporte un émetteur (1), un capteur (4), un détecteur (43, 44) et un module de traitement (62) du signal. L'émetteur produit un faisceau de rayonnement électromagnétique qui est dirigé vers le capteur. Dans le capteur (4), le faisceau subit l'effet électro-optique de Pockels. L'effet électro-optique produit une modulation de la polarisation du faisceau qui, à son tour, est convertie en uen paire de signaux indépendants à modulation réciproque d'amplitude, à partir desquels le module (62) de traitement du signal est capabe de déterminer la tension du champ électrique. Le recours à des signaux de modulation réciproque d'amplitude permet au module (62) de traitement du signal de faire une meilleure discrimination entre le signal et le bruit. Pour convertir le faisceau, le capteur (4) décompose, en au moins deux signaux en modulation d'amplitude, le faisceau selon les axes de l'état de polarisation du faisceau (une ellipse dont l'ellipticité varie entre -1 et +1 en proportion de la tension). Ces signaux sont fournis au module de traitement (62) du signal et traités de façon à déterminer la tension entre le conducteur de terre et le conducteur (2) sur lequel on mesure la tension.
CA002239722A 1995-12-08 1996-12-05 Voltmetre electro-optique Expired - Lifetime CA2239722C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002401771A CA2401771C (fr) 1995-12-08 1996-12-05 Voltmetre electro-optique

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US08/569,338 US5892357A (en) 1995-12-08 1995-12-08 Electro-optic voltage sensor for sensing voltage in an E-field
US08/570,152 1995-12-11
US08/569,338 1995-12-11
US08/570,152 US5731579A (en) 1995-12-11 1995-12-11 Electro-optical voltage sensor head
PCT/US1996/019346 WO1997022012A1 (fr) 1995-12-08 1996-12-05 Voltmetre electro-optique

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA002401771A Division CA2401771C (fr) 1995-12-08 1996-12-05 Voltmetre electro-optique

Publications (2)

Publication Number Publication Date
CA2239722A1 CA2239722A1 (fr) 1997-06-19
CA2239722C true CA2239722C (fr) 2003-04-29

Family

ID=27075040

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002239722A Expired - Lifetime CA2239722C (fr) 1995-12-08 1996-12-05 Voltmetre electro-optique

Country Status (6)

Country Link
EP (1) EP0866975A4 (fr)
JP (1) JP2001526770A (fr)
AU (1) AU1329197A (fr)
CA (1) CA2239722C (fr)
MY (1) MY125659A (fr)
WO (1) WO1997022012A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5534653B2 (ja) * 2008-05-28 2014-07-02 株式会社東芝 光電圧センサ
CN109709408B (zh) * 2019-03-08 2024-05-10 广东省职业病防治院 空间直流电场测量设备
IT201900019262A1 (it) * 2019-10-18 2021-04-18 Prysmian Spa Electrical cable structure analysis method and apparatus
CN113917242A (zh) * 2021-09-28 2022-01-11 华中科技大学 一种导体电晕放电电场非介入测量系统及其应用

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1484684A (fr) * 1966-03-16 1967-06-16 Merlin Gerin Réducteurs de tension électro-optiques
US4147979A (en) * 1975-04-16 1979-04-03 Siemens Aktiengesellschaft Movable probe carrying optical waveguides with electro-optic or magneto-optic material for measuring electric or magnetic fields
US4412173A (en) * 1981-01-26 1983-10-25 The Oregon Graduate Center For Study And Research Apparatus using leakage current for measuring resistivity
DE3272713D1 (en) * 1981-06-12 1986-09-25 Meidensha Electric Mfg Co Ltd Electric field detector
US4908568A (en) * 1987-06-09 1990-03-13 Siemens Aktiengesellschaft Mechanical probe for optical measurement of electrical potentials
US5113131A (en) * 1990-02-16 1992-05-12 Southern California Edison Company Voltage measuring device having electro-optic sensor and compensator
US5113331A (en) * 1991-08-09 1992-05-12 General Motors Corporation Vehicle headlamp assembly
FI915818A0 (fi) * 1991-12-11 1991-12-11 Imatran Voima Oy Optisk rf-givare foer maetning av spaenning och elfaelt.
JP2521395B2 (ja) * 1992-08-31 1996-08-07 日本碍子株式会社 光学式電圧・電界センサ

Also Published As

Publication number Publication date
CA2239722A1 (fr) 1997-06-19
EP0866975A1 (fr) 1998-09-30
AU1329197A (en) 1997-07-03
EP0866975A4 (fr) 1998-12-23
MY125659A (en) 2006-08-30
JP2001526770A (ja) 2001-12-18
WO1997022012A1 (fr) 1997-06-19

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Effective date: 20161205