PL EN
Analysis of insulating parameters of oil transformer by time and frequency methods
Miroslav Gutten 1  
,   Peter Brncal 1  
,   Milan Sebok 1  
,   Matej Kucera 1  
,   Daniel Korenciak 1  
 
More details
Hide details
1
University of Zilina
CORRESPONDING AUTHOR
Miroslav Gutten   

University of Zilina
Submission date: 2020-06-17
Final revision date: 2020-09-07
Acceptance date: 2020-10-19
Online publication date: 2020-11-10
Publication date: 2020-11-10
 
Diagnostyka 2020;21(4):51–56
 
KEYWORDS
TOPICS
ABSTRACT
In the paper is presented experimental analysis and diagnostics of insulating system oil-paper for power transformers. In the first part of the paper is described base theory about measurement and diagnostics insulating part (oil and paper) of transformers. In the other two parts of the paper is presented experimental results of the diagnostic measurement for the transformer 22/0.4 kV at constant temperature. Specifically, in the second part is described measuring time method of insulating diagnostics - return voltage measurement (RVM). This method is used for analysis of condition of paper moisture of high-voltage equipment. In the third part is described measuring method of insulating frequency diagnostics - frequency domain spectroscopy (FDS). This method is used for analysis insulating condition of high-voltage equipment with insulating oil-paper. The both measuring methods are unique in terms of analysis of insulating system of oil power transformers. In comparison with other methods, the RVM and FDS methods it is possible comparison and evaluate the moisture state of the dielectric paper of the power transformer with high reliability and accurate. Their reliability in determining moisture in paper was shown by determining the same result (3.5%) on the same measured transformer.
 
REFERENCES (17)
1.
Brandt, M. Identification failure of 3 MVA furnace transformer. IDEMISEE 2016, Papradno, SR, 2016: 6-10.
 
2.
Monatanari GC. Polarization and space charge behavior of unaged and electrically aged crosslinked polyethylene. IEEE Trans. Dielectr. Electr. Insul. 2000: 474-479. https://doi.org/10.1109/94.868....
 
3.
Heatcote MJ. The J & P Transformer Book 13th edition. Chennai: ELSEVIER. 2007.
 
4.
Petras J, Kurimsky J, Balogh J, Cimbala R, Dzmura, J, Dolnik B, Kolcunova I. Thermally stimulated acoustic energy shift in transformer oil. Acta Acustica United with Acustica. 2016;102(1):16-22. https://doi.org/10.3813/AAA.91....
 
5.
Glowacz A. Acoustic-Based Fault Diagnosis of Commutator Motor. Journal of Magnetism and Magnetic Materials. Electronics. 2018;7(11):299. https://doi.org/10.3390/electr....
 
6.
Glowacz, A. Acoustic fault analysis of three commutator motors. Mechanical Systems And Signal Processing. 2019;133: 106226. https://doi.org/10.1016/j.ymss....
 
7.
Shayegani AA, Hassan O, Borsi H, Gockenbach E, Mosheni H. PDC measurement evaluation on oil-pressboard samples. International Conference on Solid Dielectrics. 2004; 4: 50-62.
 
8.
Leibfried T, Kachler AJ. insulation diagnostics on power transformers using the polarisation and depolarisation current (PDC) analysis. International Symposium on Electrical Insulation. 2002;10:170-173.
 
9.
Koch M, Krueger M, Puetter M. Advanced insulation diagnostic by dielectric spectroscopy. Omicron Electronics Austria, 2011.
 
10.
Koch M, Tenbohlen S, Krüger M, Kraetge A. A Comparative Test and Consequent Improvements on Dielectric Response Methods. Proceedings of the XVth International Symposium on High Voltage Engineering, ISH, Ljubljana, Slovenia, 2007.
 
11.
Koch M. Reliable moisture determination in power transformers. PhD thesis, Institute of Energy Transmission and High Voltage Engineering, University of Stuttgart, Sierke Verlag Göttingen, Germany, 2008.
 
12.
Koch M, Kruger M. Moisture determination by improved on-site diagnostics. TechCon Asia Pacific, Sydney 2008.
 
13.
Glowacz A, Glowacz W. Vibration based fault diagnosis of commutator motor. Shock and Vibration. 2018:7460419 https://doi.org/10.1155/2018/7....
 
14.
Šulka P, Sapietová A, Bárnik F. Vibrodiagnostics of rolling ball bearings connected with processing, result´s comparison and prediction of service life. Scientific Journal of Silesian University of Technology. Series Transport. 2020; 106: 183-196. https://doi.org/10.20858/sjsut....
 
15.
Neimanis R. On estimation of moisture content in mass impregnated distribution cables. Stockholm: Royal Institute of Technology Stockholm, 2001.
 
16.
Andrearczyk A, Bagiński P. Vibration analysis of a turbocharger with an additively manufactured compressor wheel. Scientific Journal of Silesian University of Technology. Series Transport. 2020; 107:05-17. https://doi.org/10.20858/sjsut....
 
17.
Manual Megger IDAX 350.
 
eISSN:2449-5220
ISSN:1641-6414