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WO2011033548A1 - Capteur de tension capacitif - Google Patents

Capteur de tension capacitif Download PDF

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Publication number
WO2011033548A1
WO2011033548A1 PCT/IT2010/000397 IT2010000397W WO2011033548A1 WO 2011033548 A1 WO2011033548 A1 WO 2011033548A1 IT 2010000397 W IT2010000397 W IT 2010000397W WO 2011033548 A1 WO2011033548 A1 WO 2011033548A1
Authority
WO
WIPO (PCT)
Prior art keywords
distance
voltage
determined
fact
armature
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.)
Ceased
Application number
PCT/IT2010/000397
Other languages
English (en)
Inventor
Alberto Bauer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2011033548A1 publication Critical patent/WO2011033548A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/16—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using capacitive devices

Definitions

  • the present invention relates to a system regarding a voltage sensor (capacitive sensor) for detecting an electrical field generated by the tension on a determined live conductor (power line), for example in order to determine the potential of the conductor under examination in a polyphase power line.
  • a voltage sensor capactive sensor
  • the present invention relates a system of the above mentioned type and able to transmit the voltage signals of the live conductor to a remote receiver.
  • the object of the present invention is to overcome the above mentioned drawback.
  • the invention which is characterized by the claims, resolves the problem of creating a system for a voltage sensor to measure the voltage of a determined phase conductor in a polyphase power line, in which said system is characterized by the fact to comprises: >-a determined phase conductor of which is intended to measure the voltage of a polyphase power line; >-a first armature, in which said first armature is positioned at a determined first distancefrom the determined phase conductor of which is intended to measure the voltage; >-a second armature, in which said second plate is positioned parallel with respect to this first armature and in which said second armature is positioned at a given second distance from said first armature; characterized by the fact the first distance is much greater than the second distance; characterized by the fact that the voltage of the phase conductor is gauged by measuring the differential voltage between the two armatures, by the determined first distance and by the determined second distance.
  • - Figure 1 shows a schematic representation of a combined voltage and current sensors with respective transmitters used in a polyphase power line
  • - Figure 2 shows a schematic representation of the system regarding a voltage sensor used with reference to a determined live conductor of the polyphase power line.
  • two parallel armatures for instance two plates-foils conductors e/o two surfaces conductors, i.e. a first armature 101 and a second armature 102, are located at determined distances with respect to the phase conductor 103 of a given polyphase power line.
  • the distance between the the phase conductor 103 and first armature 101 is indicated with di and the distance between the first armature 101 and the second plate 102 is indicated with d a and, preferably and/or at least, the first distance di is about 14000 times the second distance d a .
  • the immunity property against electric fields emitted by adjacent phases is guaranteed by respecting geometrical relationships between the second distance d a foi i.e. the gap provided between the two armatures 101 and 102 , and the first distance di, i.e. the gap provided between the first armature 101 and the conductor 103 of the active phase.
  • the numerical value of the first distance di will be comprised between 0,1_cm and the 2_cm and, the choice of the optimal value for said first distance di will be in correlation with the value of the tension on the conductor 103 under examination (from which depends the intensity of the electric field generated by the tensions of line), as well as in correlation with the value the existing distance between the phases (from 50_cm in the lines of medium tension to 2_m in those of hight tension) and, finally, in correlation with the accuracy that it is desired to get for the sensor, in which, substantially, smaller is the value of di greater will be the accuracy of the measurement as with a small value for di the hypothesis of constant electric field is better respected.
  • the first distance di is a lot smaller with respect to the distance between the determined conductor 103 and the conductors of adjacent phases of the polyphase tension line, as well as a lot smaller with respect to the distance provided between the same determined conductor 103 and the objects e/o the systems in the immediate proximities.
  • the value of di will be around 1/500 in comparison to the value of the distance provided between the conductor of the active phase 103 and the conductors of adjacent phase of the same polyphase tension line, as well as of 1/500 in comparison to the value of the distance provided between the conductor of the active phase 103 and the objects e/o the systems in the immediate proximities.
  • this first system can be equipped with a transmitter device 401 able to send remotely receiver 500 the voltage signals (as for example to transmit the signals to a receiver 500 located in the neighbourhood) and thereby making available the voltage signals for the needed purposes.
  • said system can be self-powered by exploiting, for instance, the electrical quantities (voltage and/or current) of the the phase conductor 103.
  • the electrical quantities (voltage and/or current) of the the phase conductor 103 can be self-powered by exploiting, for instance, the electrical quantities (voltage and/or current) of the the phase conductor 103.
  • the distance between the two surfaces must be lower than 1 micrometer.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

La présente invention concerne un système destiné à un détecteur de tension prévu pour mesurer la tension de phase dans un système polyphasé. Le système selon l'invention comprend: un conducteur de phase (103); une première plaque (101) positionnée à une première distance (d1) du conducteur de phase (103); - une seconde plaque (102) positionnée parallèlement à la première plaque (101) et à une seconde distance donnée (da) de la première plaque (101); la première distance (d1) étant bien plus importante que la seconde distance (da) et la tension "v" du conducteur de phase (103) étant évaluée par la mesure de la différence de tension (Vout) entre les deux induits (101, 102), au moyen de la première distance déterminée (d1) et de la seconde distance déterminée (da).
PCT/IT2010/000397 2009-09-21 2010-09-20 Capteur de tension capacitif Ceased WO2011033548A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27704109P 2009-09-21 2009-09-21
US61/277,041 2009-09-21

Publications (1)

Publication Number Publication Date
WO2011033548A1 true WO2011033548A1 (fr) 2011-03-24

Family

ID=43480462

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2010/000397 Ceased WO2011033548A1 (fr) 2009-09-21 2010-09-20 Capteur de tension capacitif

Country Status (1)

Country Link
WO (1) WO2011033548A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014135760A1 (fr) 2013-03-05 2014-09-12 Smart Impulse Dispositif sans contact de caracterisation d'un signal electrique
US11644484B2 (en) 2018-12-17 2023-05-09 G & W Electric Company Electrical sensor assembly
US11740261B2 (en) 2016-10-14 2023-08-29 G & W Electric Company Capacitive voltage sensor assembly
US11774481B2 (en) 2018-12-17 2023-10-03 G & W Electric Company Electrical sensor assembly

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE336563C (de) * 1919-02-19 1921-05-04 Siemens Schuckertwerke G M B H Anordnung zur Messung der Spannung in Hochspannungsnetzen
US3988684A (en) * 1973-03-15 1976-10-26 Siemens Aktiengesellschaft Voltage transformer for an insulated high-voltage switching installation containing several conductors
US4090130A (en) * 1976-12-06 1978-05-16 United Technologies Corporation Capacitive coupled clamp-on voltage probe
DE3527021C1 (en) * 1985-07-27 1987-03-05 Pfisterer Elektrotech Karl Remote voltage tester
US4714893A (en) * 1983-04-13 1987-12-22 Niagara Mohawk Power Corporation Apparatus for measuring the potential of a transmission line conductor
GB2329255A (en) * 1997-07-11 1999-03-17 Chesilvale Electronics Ltd Cable pair tracing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE336563C (de) * 1919-02-19 1921-05-04 Siemens Schuckertwerke G M B H Anordnung zur Messung der Spannung in Hochspannungsnetzen
US3988684A (en) * 1973-03-15 1976-10-26 Siemens Aktiengesellschaft Voltage transformer for an insulated high-voltage switching installation containing several conductors
US4090130A (en) * 1976-12-06 1978-05-16 United Technologies Corporation Capacitive coupled clamp-on voltage probe
US4714893A (en) * 1983-04-13 1987-12-22 Niagara Mohawk Power Corporation Apparatus for measuring the potential of a transmission line conductor
DE3527021C1 (en) * 1985-07-27 1987-03-05 Pfisterer Elektrotech Karl Remote voltage tester
GB2329255A (en) * 1997-07-11 1999-03-17 Chesilvale Electronics Ltd Cable pair tracing

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014135760A1 (fr) 2013-03-05 2014-09-12 Smart Impulse Dispositif sans contact de caracterisation d'un signal electrique
US11740261B2 (en) 2016-10-14 2023-08-29 G & W Electric Company Capacitive voltage sensor assembly
US11644484B2 (en) 2018-12-17 2023-05-09 G & W Electric Company Electrical sensor assembly
US11774481B2 (en) 2018-12-17 2023-10-03 G & W Electric Company Electrical sensor assembly
US12196785B2 (en) 2018-12-17 2025-01-14 G & W Electric Company Electrical sensor assembly

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