Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
권호 표지
DOI QR코드

DOI QR Code

Study on the Effectiveness of Continuous Water Removal in Oil Immersed Transformers

유침절연 변압기에서 연속적 수분제거 유효성에 관한 연구

  • Received : 2015.10.01
  • Accepted : 2015.12.29
  • Published : 2016.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

This paper describes the effectiveness of continuous water removal in oil immersed transformers. Insulation oil in which insulation papers were immersed were prepared for tests and water concentrations in oil with heating time were measured at five oil temperatures. Also, the tests that water dissolved in $100^{\circ}C$ oil was removed at once and continuously at $50^{\circ}C$ and $100^{\circ}C$ were performed for consideration of effective method for water removal. Test results indicated that the oils for water measurement have to be extracted at similar temperatures and water in oil has to be continuously removed at higher temperatures for more effective water management of transformers.

Keywords

References

  1. Muhammad Arshad, Syed M. Islam and Abdul Khaliq, "Power Transformer Aging and Life Extension", SL International Conference on Probabilistic Methods Applied to Power Systems, Iowa State University, Ames, Iowa September 12-16.2004.
  2. Junichi Wada, Genyo Ueta, Shigemitsu Okabe, "Method to Evaluate the Degradation Condition of Transformer Insulating Oil- Experimental Study on the Hydrophilic and Dissociative Properties of Degradation Products", IEEE Transactions on Dielectrics and Electrical Insulation Vol. 21, No. 2, April 2014.
  3. PankajShukla1, Y.R. Sood2, R.K. Jarial3, "Experimental Evaluation of Water Content In Transformer Oil", International Journal of Innovative Research in Science, Engineering and Technology Vol. 2, Issue 1, Janauary 2013.
  4. Lance R. Lewand and David Koehler, "Water Distribution and Migration in Transformer Insulation Systems and Assessment of Paper Water Content" The Premier Electrical Maintenance and Safety Event.
  5. Brian Sparling, Jacques Aubin, "Assessing Water Content in Insulating Paper of Power Transformers", Electric energy T&D July/August 2007.
  6. IEC Publication 85 (1957): Recommendations for classification of materials for the insulation of electrical machinery and apparatus in relation to their thermal stability in service.
  7. Maik Koch, "Improved Determination of Moisture in Oil-Paper-Insulations by Specialised Moisture Equilibrium Charts", Proceedings of the XIVth International Symposium on High Voltage Engineering, S. 508, Beijing, China, 2005.
  8. KEPCO, "Preventive Diagnosis Criteria of Power Equipment", 2011.11.