(19)
(11) EP 4 097 493 A1

(12)

(43) Date of publication:
07.12.2022 Bulletin 2022/49

(21) Application number: 20828310.1

(22) Date of filing: 30.11.2020
(51) International Patent Classification (IPC): 
G01R 31/12(2020.01)
G01R 31/72(2020.01)
 G01R 31/62(2020.01)
(52) Cooperative Patent Classification (CPC):
G01R 31/62; G01R 31/72; G01R 31/12; G01R 31/1209; G01R 31/1254
(86) International application number:
PCT/IB2020/061271
(87) International publication number:
WO 2021/152377 (05.08.2021 Gazette 2021/31)
(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 MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 29.01.2020 WO PCT/IB2020/050694

(71) Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
1015 Lausanne (CH)

(72) Inventors:
  • KARAMI, Hamidreza
    1006 Lausanne (CH)
  • MOSTAJABI, Amirhossein
    1007 Lausanne (CH)
  • RACHIDI-HAERI, Farhad
    1009 Pully (CH)
  • AZADIFAR, Mohammad
    1024 Ecublens (CH)
  • RUBINSTEIN, Marcos
    1468 Cheyres (CH)

(74) Representative: Weihs, Bruno Konrad 
André Roland SA P.O. Box 352
1000 Lausanne 22
1000 Lausanne 22 (CH)

   


(54) PARTIAL DISCHARGE LOCALIZATION USING TIME REVERSAL: APPLICATION TO POWER TRANSFORMERS AND GAS-INSULATED SUBSTATIONS