Estimation of water content in power transformers in service by polarization and depolarization current measurements

2008 IEEE International Conference on Dielectric Liquids, ICDL 2008

Volumn , Issue , 2008, Pages

  Gradnik, Tim ^a   Babuder, Maks ^a   Koncan Gradnik, Maja ^a  

^a EIMV Elektroinstitut Milan Vidmar   (Slovenia)

Author keywords

[No Author keywords available]

Indexed keywords

CORRELATION THEORY; DEPOLARIZATION; ELECTRIC CURRENT MEASUREMENT; ELECTRIC INSTRUMENT TRANSFORMERS; LIQUIDS; POLARIZATION; POWER TRANSFORMERS; TRANSFORMER SUBSTATIONS; WATER ANALYSIS; WATER CONTENT;

COMPARATIVE ANALYSIS; ESTIMATION METHODS; EVALUATION METHODS; IN FIELDS; IN SERVICES; LABORATORY PRACTICES; OIL TEMPERATURES; POLARIZATION AND DEPOLARIZATION CURRENTS; TWO DIFFERENT METHODS; UNSTABLE TEMPERATURES;

DIELECTRIC LIQUIDS;

EID: 55849090291     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.1109/ICDL.2008.4622449     Document Type: Conference Paper

References (8)

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2. Norwegian standard NEK 240-1 (2001), third edition, with the following English title: Insulating Oils. Requirements, Supervision and Maintenance Part 1: Transformers, Switchgear and associated Oil-Filled Equipment
3. Griffin-Fessler, MIT paper El. Mag., Jan/Feb 1999, original paper not found, available at http://www.transformerscommittee.org/info/S04/ S04MoistureEstimationPresentation.pdf
4. T. V. Oommen, "Moisture Equilibrium in Paper Oil Insulation Systems", Proceedings 16th Electrical/Electronics Insulation Conference, Chicago, pp. 162-166,1983.
5. M. Mulej, M. Koncan-Gradnik, A. Varl., Up to date experience on furans for transformer diagnostics, Proceedings of the XIIIth International Symposium on High Voltage Engineering, Delft, Netherlands, August 25-29, 2003,p.581
6. T. Gradnik, M. Koncan-Gradnik, A rectifier transformer aging research by use of optical fibre temperature sensors, thermal field analysis and EIMV physical-chemical diagnostics, Proc. CIGRE SC A2 & Dl - Colloquium, Brugge, Belgium 2007.
7. PDC-ANALYSER-lMOD, Alff Engineering, Switzerland http://www.alff- engineering.ch/analyser.htm
8. T. Leibfried and A.J. Kachler, "Insulation Diagnostics on Power Transformers Using the Polarisation and Depolarisation Current (PDC) Analysis", Conference Record of the 2002 IEEE International Symposium on Electrical Insulation, USA, pp. 170-173, 2002.