(19)
(11) EP 4 771 721 A1

(12)

(43) Date of publication:
08.07.2026 Bulletin 2026/28

(21) Application number: 23762229.5

(22) Date of filing: 29.08.2023
(51) International Patent Classification (IPC): 
H02H 3/40(2006.01)
 G01R 31/08(2020.01)
(52) Cooperative Patent Classification (CPC):
H02H 3/40; G01R 31/085; G01R 31/088
(86) International application number:
PCT/EP2023/073593
(87) International publication number:
WO 2025/045350 (06.03.2025 Gazette 2025/10)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
KH MA MD TN

(71) Applicant: Technische Universität Graz
8010 Graz (AT)

(72) Inventors:
  • GALLER, Manuel
    8010 Graz (AT)
  • FICKERT, Lothar
    8042 Graz (AT)

(74) Representative: Weiser Voith Gugler Patentanwälte Partnerschaft 
Kopfgasse 7
1130 Wien
1130 Wien (AT)

   


(54) DISTANCE RELAY, METHOD AND DEVICE FOR DETERMINING A FAULT DISTANCE IN A POWER TRANSMISSION LINE