FI951071A - Measuring device causes saturation of the current in medium voltage lines - Google Patents

Measuring device causes saturation of the current in medium voltage lines Download PDF

Info

Publication number
FI951071A
FI951071A FI951071A FI951071A FI951071A FI 951071 A FI951071 A FI 951071A FI 951071 A FI951071 A FI 951071A FI 951071 A FI951071 A FI 951071A FI 951071 A FI951071 A FI 951071A
Authority
FI
Finland
Prior art keywords
measuring device
wires
current
voltage lines
medium voltage
Prior art date
Application number
FI951071A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI951071A0 (en
FI100828B (en
Inventor
Timo Jaemiae
Original Assignee
Powex Oy
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 Powex Oy filed Critical Powex Oy
Priority to FI951071A priority Critical patent/FI100828B/en
Publication of FI951071A0 publication Critical patent/FI951071A0/en
Priority to AU48335/96A priority patent/AU4833596A/en
Priority to PCT/FI1996/000138 priority patent/WO1996027802A2/en
Publication of FI951071A publication Critical patent/FI951071A/en
Application granted granted Critical
Publication of FI100828B publication Critical patent/FI100828B/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
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • G01R15/181—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using coils without a magnetic core, e.g. Rogowski coils

Abstract

The invention relates to a measuring device for measuring a current flowing in medium-voltage lines from the ground by means of a measuring device remote from the wires. The measuring device includes a substantially horizontally held coil (1) for supplying a voltage (E) which is proportional to the variations of flux density ( phi ) passing through a surface area (A) defined by the coil (1), elements (4, 5, 6) for supplying a signal which is proportional to a distance between the measuring device and the wires, elements (7, 8, 9) for supplying a signal which is proportional to a gap between the wires, and elements (3) for correcting said voltage (E) on the basis of the distance and gap signals, such that the corrected voltage represents a current flowing in the wires.
FI951071A 1995-03-08 1995-03-08 Measuring device for measuring the current in overhead lines of a medium voltage line FI100828B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI951071A FI100828B (en) 1995-03-08 1995-03-08 Measuring device for measuring the current in overhead lines of a medium voltage line
AU48335/96A AU4833596A (en) 1995-03-08 1996-03-07 Measuring device for measuring a current flowing in the overhead wires of a medium-voltage line
PCT/FI1996/000138 WO1996027802A2 (en) 1995-03-08 1996-03-07 Measuring device for measuring a current flowing in the overhead wires of a medium-voltage line

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI951071 1995-03-08
FI951071A FI100828B (en) 1995-03-08 1995-03-08 Measuring device for measuring the current in overhead lines of a medium voltage line

Publications (3)

Publication Number Publication Date
FI951071A0 FI951071A0 (en) 1995-03-08
FI951071A true FI951071A (en) 1996-09-09
FI100828B FI100828B (en) 1998-02-27

Family

ID=8543000

Family Applications (1)

Application Number Title Priority Date Filing Date
FI951071A FI100828B (en) 1995-03-08 1995-03-08 Measuring device for measuring the current in overhead lines of a medium voltage line

Country Status (3)

Country Link
AU (1) AU4833596A (en)
FI (1) FI100828B (en)
WO (1) WO1996027802A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1761786A1 (en) 2004-06-29 2007-03-14 SSI Power LLC Electric power monitoring and response system
SI24793A (en) * 2014-09-24 2016-02-29 E-Senzor D.O.O. Wireless sensor detecting disconection of conductors in three-phase overground electricity line and a method relating to this
JP2020038113A (en) * 2018-09-04 2020-03-12 日置電機株式会社 Current measuring device and current measuring method

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3312898A (en) * 1963-02-28 1967-04-04 Westinghouse Electric Corp Polyphase current measuring device using several signal detectors each positioned to respond to only one phase current magnetic field
US3745452A (en) * 1971-02-23 1973-07-10 J Osburn Magnetic field gradient apparatus and method for detecting pipe line corrosion
US4220913A (en) * 1978-05-23 1980-09-02 Electrolocation Limited Apparatus for and methods of electromagnetic surveying of elongated underground conductors
US4370610A (en) * 1978-08-30 1983-01-25 Bicc Public Limited Company Locating sheath faults in underground power supply cables
GB2057147B (en) * 1979-08-18 1983-11-23 Geodate Ltd Detecting faults in buried cables
US4390836A (en) * 1980-08-11 1983-06-28 Marathon Oil Company Method and apparatus for the detection of pipeline holidays
DE3128061A1 (en) * 1981-07-16 1983-02-03 Howaldtswerke-Deutsche Werft Ag Hamburg Und Kiel, 2300 Kiel Method for locating faults on electrical conductors
FI863487A (en) * 1986-08-27 1988-02-28 Matti Viikari PAO ELEKTROMAGNETISK INUKTION BASERANDE FOERFARANDE OCH ANORDNING FOER KONTROLL AV SKICKTET AV ELEKTRISK ISOLERING HOS LEDNINGAR I ETT LEDANDE MEDIUM.
WO1992017789A1 (en) * 1991-03-28 1992-10-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Device for measuring magnetic fields and hence electric currents
GB9313333D0 (en) * 1993-06-29 1993-08-11 Chesilvale Electronics Ltd Detecting cable faults

Also Published As

Publication number Publication date
WO1996027802A2 (en) 1996-09-12
FI951071A0 (en) 1995-03-08
FI100828B (en) 1998-02-27
WO1996027802A3 (en) 1996-10-10
AU4833596A (en) 1996-09-23

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Owner name: POWEX OY