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WO2020109283A3 - Capacitive voltage sensor with virtual ground reference - Google Patents

Capacitive voltage sensor with virtual ground reference Download PDF

Info

Publication number
WO2020109283A3
WO2020109283A3 PCT/EP2019/082529 EP2019082529W WO2020109283A3 WO 2020109283 A3 WO2020109283 A3 WO 2020109283A3 EP 2019082529 W EP2019082529 W EP 2019082529W WO 2020109283 A3 WO2020109283 A3 WO 2020109283A3
Authority
WO
WIPO (PCT)
Prior art keywords
conductive element
virtual ground
voltage sensor
ground reference
housing
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/EP2019/082529
Other languages
French (fr)
Other versions
WO2020109283A2 (en
Inventor
Paul HARRISON-ROWE
Andrew Mcghee
Robert Derek MARTIN
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.)
Trust Power Ltd
Original Assignee
Trust Power Ltd
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 Trust Power Ltd filed Critical Trust Power Ltd
Publication of WO2020109283A2 publication Critical patent/WO2020109283A2/en
Publication of WO2020109283A3 publication Critical patent/WO2020109283A3/en
Anticipated expiration legal-status Critical
Ceased 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
    • G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
    • G01R1/22—Tong testers acting as secondary windings of current transformers
    • 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
    • G01R15/142—Arrangements for simultaneous measurements of several parameters employing techniques covered by groups G01R15/14 - G01R15/26
    • 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
    • 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
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • G01R15/186—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using current transformers with a core consisting of two or more parts, e.g. clamp-on type
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0023—Measuring currents or voltages from sources with high internal resistance by means of measuring circuits with high input impedance, e.g. OP-amplifiers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/001—Measuring real or reactive component; Measuring apparent energy
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/06—Arrangements for measuring electric power or power factor by measuring current and voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
    • G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
    • G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

There is described a non-invasive electricity monitoring device comprising a housing having an opening configured to receive an electricity cable. The non-invasive electricity monitoring device further comprises a conductive element and voltage sensing circuitry within the housing. The conductive element is configured to contact and conform to an external surface of the received cable to enable capacitive coupling between the conductive element and the cable. The voltage sensing circuitry is configured to sense a voltage between the conductive element and a virtual ground located within the housing so as to determine a phase of the sensed voltage. A method for non-invasive electricity monitoring is also described.
PCT/EP2019/082529 2018-11-29 2019-11-26 Non-invasive electricity monitoring Ceased WO2020109283A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1819468.8A GB2579376B (en) 2018-11-29 2018-11-29 Non-invasive electricity monitoring
GB1819468.8 2018-11-29

Publications (2)

Publication Number Publication Date
WO2020109283A2 WO2020109283A2 (en) 2020-06-04
WO2020109283A3 true WO2020109283A3 (en) 2020-08-06

Family

ID=65024767

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/082529 Ceased WO2020109283A2 (en) 2018-11-29 2019-11-26 Non-invasive electricity monitoring

Country Status (2)

Country Link
GB (1) GB2579376B (en)
WO (1) WO2020109283A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201600103234A1 (en) 2016-10-14 2018-04-14 Green Seas Ventures Ldt Constructive system relating to a capacitive voltage sensor
IT201800004114A1 (en) 2018-03-30 2019-09-30 Green Seas Ventures Ltd C/O Citco B V I Ltd CONSTRUCTION SYSTEM WITH A CAPACITIVE VOLTAGE SENSOR
EP3899553A4 (en) 2018-12-17 2022-10-26 G & W Electric Company ELECTRICAL SENSOR ARRANGEMENT
WO2020131909A1 (en) 2018-12-17 2020-06-25 G & W Electric Company Electrical sensor assembly
WO2022120612A1 (en) * 2020-12-08 2022-06-16 华为数字能源技术有限公司 Ac electrical energy detection device
CN117157534A (en) * 2021-04-23 2023-12-01 华为数字能源技术有限公司 Current detection device, electric energy detection device, and control method for current detection device
DE102024107596A1 (en) * 2024-03-18 2025-09-18 SAX Power GmbH Inductive current transformer, smart meter and method for measuring electrical quantities in an electrical conductor

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5473244A (en) * 1992-09-17 1995-12-05 Libove; Joel M. Apparatus for measuring voltages and currents using non-contacting sensors
US20020097056A1 (en) * 2001-01-24 2002-07-25 General Dynamics Ots (Aerospace), Inc. Series arc fault diagnostic for aircraft wiring
US20020171433A1 (en) * 2001-05-16 2002-11-21 Masahiro Watanabe Voltage measuring apparatus for sheathed power cable
US20100318306A1 (en) * 2007-05-23 2010-12-16 Onzo Limited Capacitive voltage sensor
JP2014153181A (en) * 2013-02-08 2014-08-25 Nippon Telegraph & Telephone East Corp Voltage probe
EP2806277A1 (en) * 2013-05-24 2014-11-26 3M Innovative Properties Company Closure
EP3321696A1 (en) * 2016-11-11 2018-05-16 Fluke Corporation Non-contact electrical parameter measurement systems

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6470283B1 (en) 1999-11-15 2002-10-22 Thomas G. Edel Non-contact self-powered electric power monitor
JP6372162B2 (en) * 2014-05-23 2018-08-15 オムロン株式会社 Voltage measuring device and voltage measuring method
KR20160065613A (en) * 2014-12-01 2016-06-09 삼성전자주식회사 Voltage measurement device and voltage sensor
US10281503B2 (en) * 2016-11-11 2019-05-07 Fluke Corporation Non-contact voltage measurement system using multiple capacitors

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5473244A (en) * 1992-09-17 1995-12-05 Libove; Joel M. Apparatus for measuring voltages and currents using non-contacting sensors
US20020097056A1 (en) * 2001-01-24 2002-07-25 General Dynamics Ots (Aerospace), Inc. Series arc fault diagnostic for aircraft wiring
US20020171433A1 (en) * 2001-05-16 2002-11-21 Masahiro Watanabe Voltage measuring apparatus for sheathed power cable
US20100318306A1 (en) * 2007-05-23 2010-12-16 Onzo Limited Capacitive voltage sensor
JP2014153181A (en) * 2013-02-08 2014-08-25 Nippon Telegraph & Telephone East Corp Voltage probe
EP2806277A1 (en) * 2013-05-24 2014-11-26 3M Innovative Properties Company Closure
EP3321696A1 (en) * 2016-11-11 2018-05-16 Fluke Corporation Non-contact electrical parameter measurement systems

Also Published As

Publication number Publication date
WO2020109283A2 (en) 2020-06-04
GB201819468D0 (en) 2019-01-16
GB2579376A (en) 2020-06-24
GB2579376B (en) 2020-12-30

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