(19)
(11) EP 1 092 256 A1

(12)

(43) Date of publication:
18.04.2001 Bulletin 2001/16

(21) Application number: 99930026.2

(22) Date of filing: 27.05.1999
(51) International Patent Classification (IPC)7: H02J 3/36
(86) International application number:
PCT/SE9900/900
(87) International publication number:
WO 9963/641 (09.12.1999 Gazette 1999/49)
(84) Designated Contracting States:
DE FR GB SE

(30) Priority: 29.05.1998 SE 9801906

(71) Applicant: ABB AB
721 83 Västeras (SE)

(72) Inventor:
  • ARNLJOTSSON, Gudmundur
    IS-105 Reykjavik (IS)

   


(54) DETECTION OF FAULTS ON TRANSMISSION LINES IN A BIPOLAR HIGH-VOLTAGE DIRECT CURRENT SYSTEM