Processing

Please wait...

Settings

Settings

1. WO2000041007 - LOCATION OF A CABLE IN A DC CONNECTION IN A BIPOLAR 12-PULSE SYSTEM FOR TRANSMISSION OF ELECTRICAL ENERGY BY MEANS OF HIGH-VOLTAGE DIRECT CURRENT

Publication Number WO/2000/041007
Publication Date 13.07.2000
International Application No. PCT/SE1999/002140
International Filing Date 22.11.1999
Chapter 2 Demand Filed 29.06.2000
IPC
G01V 3/08 2006.01
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
3Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation
08operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
CPC
G01V 3/081
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS
3Electric or magnetic prospecting or detecting
08operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
081the magnetic field is produced by the objects or geological structures
Applicants
  • ABB AB [SE/SE]; S-721 83 Västerås, SE (AllExceptUS)
  • JUHLIN, Lars-Erik [SE/SE]; SE (UsOnly)
Inventors
  • JUHLIN, Lars-Erik; SE
Agents
  • LARSSON, Håkan ; ABB AB Patent Gideonsbergsgatan 2 Tegnérområdet S-721 78 Västerås, SE
Priority Data
9804403-518.12.1998SE
Publication Language English (EN)
Filing Language Swedish (SV)
Designated States
Title
(EN) LOCATION OF A CABLE IN A DC CONNECTION IN A BIPOLAR 12-PULSE SYSTEM FOR TRANSMISSION OF ELECTRICAL ENERGY BY MEANS OF HIGH-VOLTAGE DIRECT CURRENT
(FR) LOCALISATION D'UN CABLE DANS UNE LIAISON EN COURANT CONTINU DANS UN SYSTEME A 12 IMPULSIONS BIPOLAIRE POUR TRANSMISSION DE L'ENERGIE ELECTRIQUE AU MOYEN D'UN COURANT CONTINU A HAUTE TENSION
Abstract
(EN)
A dc connection (CAB1, CAB2) in a bipolar 12-pulse system for transmission of electrical energy by means of high-voltage direct current interconnects two converters, each one having two 6-pulse valve bridges (BR11, BR12, BR21, BR22) connected in series at a connection point (J1, J2). In a method for location of the cable, said cable is located by sensing of a magnetic field associated with a current flowing through the cable. The dc connection is temporarily supplied with a ground-mode current, intended for the location, and a magnetic field associated with said ground-mode current is sensed.
(FR)
L'invention concerne une liaison en courant continu (CAB1, CAB2) dans un système à 12 impulsions bipolaire conçue pour transmettre de l'énergie électrique au moyen d'un courant continu à haute tension. Ladite liaison relie deux transformateurs, chacun doté de deux coupleurs de soupapes à 6 impulsions (BR11, BR12, BR21, BR22) reliés en série à un point de liaison (J1, J2). Dans un procédé destiné à localiser le câble, ce dernier est localisé par détection d'un champ magnétique associé à un courant passant dans ledit câble. La liaison en courant continu est temporairement alimentée avec un courant de sol, destiné à la localisation, un champ magnétique associé audit courant de sol étant détecté.
Also published as
Latest bibliographic data on file with the International Bureau