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 PDFInfo
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
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.
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 |
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 |
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 |
Applications Claiming Priority (2)
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 |
FI951071 | 1995-03-08 |
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2571477A1 (en) * | 2004-06-29 | 2006-01-19 | Ssi Power, Llc | Electric power monitoring and response system |
SI24793B (en) * | 2014-09-24 | 2024-04-30 | 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)
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 |
-
1995
- 1995-03-08 FI FI951071A patent/FI100828B/en active
-
1996
- 1996-03-07 AU AU48335/96A patent/AU4833596A/en not_active Abandoned
- 1996-03-07 WO PCT/FI1996/000138 patent/WO1996027802A2/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
FI100828B (en) | 1998-02-27 |
FI951071A0 (en) | 1995-03-08 |
WO1996027802A3 (en) | 1996-10-10 |
WO1996027802A2 (en) | 1996-09-12 |
AU4833596A (en) | 1996-09-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
GB | Transfer or assigment of application |
Owner name: POWEX OY |