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The application of a molecular sieve for drying the insulation system of a power transformer in terms of improving its perational reliability
 
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Online publication date: 2022-06-23
Publication date: 2022-06-23
 
Eksploatacja i Niezawodność – Maintenance and Reliability 2022;24(3):502–509
 
HIGHLIGHTS
  • Selectivity of water and hydrogen sorption through a 3A molecular sieve was shown.
  • Use of 3A MS does not affect the diagnostics of transformers using the DGA method.
  • Effectiveness of drying insulation using a 3A MS has been demonstrated.
  • Drying efficiency was proved for cellulose impregnated with various liquid dielectrics
KEYWORDS
ABSTRACT
The first research objective was the assessment of the selectivity of water and hydrogen adsorption by the 3A molecular sieve (MS) in the terms of the safety of using the DGA (Dissolved Gas Analysis) method as a diagnostic technique. The second objective was to demonstrate the efficiency of drying the insulation system consisting of cellulose insulation impregnated with various insulating liquids in terms of improving safety and extending the service life of power transformers. In order to achieve the assumed objectives, measurement systems were prepared and material tests were carried out, based mainly on chromatographic analyzes and measurements of water content using the Karl Fischer titration method. On the basis of the obtained test results and the conducted physical analyzes, the selectivity of MS sorption was shown and it was explained that the facilitator of the adsorption of water molecules is their polar nature related to their large dipole moment. The high efficiency of drying cellulose insulation impregnated with various insulating liquids using MS was also demonstrated
 
CITATIONS (4):
1.
Application of Near-Infrared Spectroscopy to Measure the Water Content in Liquid Dielectrics
Piotr Przybylek
Energies
 
2.
The Use of Methanol Vapour for Effective Drying of Cellulose Insulation
Piotr Przybylek, Jaroslaw Gielniak
Energies
 
3.
The influence of hydrogen and oxygen (HHO) gas on engine characteristics under the effect of the lean mixtures of gasoline and bioethanol
Alfredas Rimkus, Gabrielius Mejeras, Jonas Matijošius
International Journal of Hydrogen Energy
 
4.
Determination of Mineral Oil Concentration in the Mixture with Synthetic Ester Using Near-Infrared Spectroscopy
Piotr Przybylek
Energies
 
eISSN:2956-3860
ISSN:1507-2711