SE9301426D0 - ACTIVE DIMENSION OF POWER FREQUENCY MAGNET FIELD - Google Patents

ACTIVE DIMENSION OF POWER FREQUENCY MAGNET FIELD

Info

Publication number
SE9301426D0
SE9301426D0 SE9301426A SE9301426A SE9301426D0 SE 9301426 D0 SE9301426 D0 SE 9301426D0 SE 9301426 A SE9301426 A SE 9301426A SE 9301426 A SE9301426 A SE 9301426A SE 9301426 D0 SE9301426 D0 SE 9301426D0
Authority
SE
Sweden
Prior art keywords
field
magnetic
station
power frequency
amplitude
Prior art date
Application number
SE9301426A
Other languages
Swedish (sv)
Original Assignee
Asea Brown Boveri Ab
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 Ab filed Critical Asea Brown Boveri Ab
Priority to SE9301426A priority Critical patent/SE9301426D0/en
Publication of SE9301426D0 publication Critical patent/SE9301426D0/en
Priority to PCT/SE1994/000280 priority patent/WO1994026084A1/en

Links

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

The present invention relates to a method and a device for actively damping the power-frequency magnetic fields which occur in the vicinity of, for example, small-sized transformer, network and distribution substations. This is performed by generating a field directed opposite to the unwanted magnetic field from the electric equipment in the station. This is achieved, for example, by disposing a compensating coil (8) along the walls of the station. A magnetic-field-sensing probe (6) is placed below the roof of the station in such a way that it covers an area where the amplitude of the magnetic field is as close to the mean field over the whole roof as possible. The magnetic-field-sensing probe is then connected to a current amplifier (9) which, in turn, feeds the compensating coil such that the amplitude of the field at the probe is considerably reduced.
SE9301426A 1993-04-28 1993-04-28 ACTIVE DIMENSION OF POWER FREQUENCY MAGNET FIELD SE9301426D0 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9301426A SE9301426D0 (en) 1993-04-28 1993-04-28 ACTIVE DIMENSION OF POWER FREQUENCY MAGNET FIELD
PCT/SE1994/000280 WO1994026084A1 (en) 1993-04-28 1994-03-29 A method and a device for actively damping power-frequency magnetic fields

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9301426A SE9301426D0 (en) 1993-04-28 1993-04-28 ACTIVE DIMENSION OF POWER FREQUENCY MAGNET FIELD

Publications (1)

Publication Number Publication Date
SE9301426D0 true SE9301426D0 (en) 1993-04-28

Family

ID=20389741

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9301426A SE9301426D0 (en) 1993-04-28 1993-04-28 ACTIVE DIMENSION OF POWER FREQUENCY MAGNET FIELD

Country Status (2)

Country Link
SE (1) SE9301426D0 (en)
WO (1) WO1994026084A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE506698C2 (en) * 1995-06-27 1998-02-02 Volvo Ab Device and method for reducing magnetic gear fields
EP0880311B1 (en) * 1996-10-04 2004-04-14 Matsushita Electric Industrial Co., Ltd. Electromagnetic field shielding device
ES2147536B1 (en) * 1998-12-21 2001-07-01 Univ Madrid Complutense COMPENSATION DEVICE OF THE MAGNETIC FIELD PRODUCED BY ELECTRIC TRACTION RAILWAYS.
FI20001820A (en) * 1999-12-13 2001-06-14 Valtion Teknillinen Method for damping magnetic interference in a magnetically protected room

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE432087B (en) * 1977-10-18 1984-03-19 Nils Borje Akesson SHIP FOR PROTECT MAGNETIZATION OF VESSELS
DE3122686A1 (en) * 1981-06-06 1983-02-03 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt ARRANGEMENT FOR COMPENSATING MAGNETIC OWN FIELDS OF MOVABLE BODIES
DE3403982A1 (en) * 1984-02-04 1985-08-08 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt METHOD FOR AN EMERGENCY-FIELD-CONTROLLED MAGNETIC PROTECTIVE SYSTEM (SMES SYSTEM)
DE3614527A1 (en) * 1986-04-29 1987-11-05 Bundesrep Deutschland METHOD FOR SETTING A MAGNETIC PROTECTION (MES) - SYSTEM FOR COMPENSATING THE MAGNETIC INTERFERENCE FIELD OF A VEHICLE, IN PARTICULAR SHIP
DE3723485A1 (en) * 1987-07-16 1989-01-26 Thomson Brandt Gmbh Inductive cooking point
GB8818087D0 (en) * 1988-07-29 1988-09-01 Univ Southampton Improvements in/relating to attenuation of electro-magnetic field components

Also Published As

Publication number Publication date
WO1994026084A1 (en) 1994-11-10

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