SE9704391L - Plant and procedure for such - Google Patents

Plant and procedure for such

Info

Publication number
SE9704391L
SE9704391L SE9704391A SE9704391A SE9704391L SE 9704391 L SE9704391 L SE 9704391L SE 9704391 A SE9704391 A SE 9704391A SE 9704391 A SE9704391 A SE 9704391A SE 9704391 L SE9704391 L SE 9704391L
Authority
SE
Sweden
Prior art keywords
electric
inner electrode
electric device
measuring apparatus
sensor
Prior art date
Application number
SE9704391A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE512698C2 (en
SE9704391D0 (en
Inventor
Mats Leijon
Maria Lundmark
Original Assignee
Asea Brown Boveri
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 Asea Brown Boveri filed Critical Asea Brown Boveri
Priority to SE9704391A priority Critical patent/SE512698C2/en
Publication of SE9704391D0 publication Critical patent/SE9704391D0/en
Priority to AU15156/99A priority patent/AU1515699A/en
Priority to DE19882835T priority patent/DE19882835T1/en
Priority to PCT/SE1998/002150 priority patent/WO1999031520A1/en
Priority to JP2000539364A priority patent/JP2002508520A/en
Publication of SE9704391L publication Critical patent/SE9704391L/en
Publication of SE512698C2 publication Critical patent/SE512698C2/en

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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Testing Relating To Insulation (AREA)

Abstract

An electric plant comprises an electric device connected to an electric distribution or transmission network, said electric device having a magnetic circuit and at least one winding, and a measuring apparatus (10) adapted to supervise the electric device. The measuring apparatus comprises at least one capacitive sensor (11) including an inner electrode (12) and a screen electrode (14), which screens the inner electrode from disturbing electric fields. The sensor is adapted to provide voltage measurement by sensing, by means of the inner electrode (12), such a part of an electric field which penetrates into the inner electrode. The sensor (11) is directed towards an electric line connecting the electric device with the distribution or transmission network so as to sense, at insulation distance, the voltage, including overtones and transients, of this electric line via the electric field surrounding the line. Furthermore, the invention comprises a method for supervising the electric device by means of the measuring apparatus.
SE9704391A 1997-11-27 1997-11-27 Electric system with capacitive contact-free voltage measurement and control unit for reducing harmonics SE512698C2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE9704391A SE512698C2 (en) 1997-11-27 1997-11-27 Electric system with capacitive contact-free voltage measurement and control unit for reducing harmonics
AU15156/99A AU1515699A (en) 1997-11-27 1998-11-27 A plant and a method in connection therewith
DE19882835T DE19882835T1 (en) 1997-11-27 1998-11-27 Plant and associated procedure
PCT/SE1998/002150 WO1999031520A1 (en) 1997-11-27 1998-11-27 A plant and a method in connection therewith
JP2000539364A JP2002508520A (en) 1997-11-27 1998-11-27 Plant and related methods

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9704391A SE512698C2 (en) 1997-11-27 1997-11-27 Electric system with capacitive contact-free voltage measurement and control unit for reducing harmonics

Publications (3)

Publication Number Publication Date
SE9704391D0 SE9704391D0 (en) 1997-11-27
SE9704391L true SE9704391L (en) 1999-05-28
SE512698C2 SE512698C2 (en) 2000-05-02

Family

ID=20409169

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9704391A SE512698C2 (en) 1997-11-27 1997-11-27 Electric system with capacitive contact-free voltage measurement and control unit for reducing harmonics

Country Status (5)

Country Link
JP (1) JP2002508520A (en)
AU (1) AU1515699A (en)
DE (1) DE19882835T1 (en)
SE (1) SE512698C2 (en)
WO (1) WO1999031520A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10137270A1 (en) 2001-07-31 2003-02-20 Aloys Wobben Wind energy installation has a ring generator with a stator having grooves spaced at intervals on an internal or external periphery for receiving a stator winding.
CN100505120C (en) * 2004-11-01 2009-06-24 王如璋 Dry type mutual inductor with optical signal output
KR101095778B1 (en) * 2009-12-28 2011-12-21 주식회사 효성 Apparatus for partial dishcarge detection to power transformer
FR2971853B1 (en) * 2011-02-23 2014-09-12 Joel Louis Henri Herigault DIRECTIONAL SENSOR FOR PARTIAL DISCHARGE SIGNALS, USEFUL IN ELECTRICAL ENERGY EXHAUST TUBES WITHOUT CONTACT WITH HIGH VOLTAGE CONDUCTORS
NO20161993A1 (en) * 2016-12-15 2018-04-09 Wirescan As Method for measuring an impedance of an electric cable, a coupler arrangement and uses thereof
CN111832243A (en) * 2020-07-25 2020-10-27 无锡特力堡电气有限公司 Design simulation tool and method for introducing passive filtering compensation of actually measured electric energy parameters

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3826981A (en) * 1968-05-03 1974-07-30 H Ross Solid-state high impedance meter system
US4328461A (en) * 1979-07-02 1982-05-04 Mcdonnell Douglas Corporation Apparatus for and method of measuring a high voltage electric field
US4397702A (en) * 1980-01-09 1983-08-09 Johnson Controls, Inc. Fabrication of non-conductive charged sensing probe unit
US5473244A (en) * 1992-09-17 1995-12-05 Libove; Joel M. Apparatus for measuring voltages and currents using non-contacting sensors
SE507933C2 (en) * 1996-07-15 1998-07-27 Asea Brown Boveri Method, apparatus and sensor for capacitively detecting fields and voltages and their use

Also Published As

Publication number Publication date
DE19882835T1 (en) 2000-11-16
SE512698C2 (en) 2000-05-02
SE9704391D0 (en) 1997-11-27
JP2002508520A (en) 2002-03-19
AU1515699A (en) 1999-07-05
WO1999031520A1 (en) 1999-06-24

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Legal Events

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